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Food webs are limited representations of real ecosystems as they necessarily aggregate many species into trophic species, which are functional groups of species that have the same predators and prey in a food web. Ecologists use these simplifications in quantitative (or mathematical) models of trophic or consumer-resource systems dynamics. Using these models they can measure and test for generalized patterns in the structure of real food web networks. Ecologists have identified non-random properties in the topographic structure of food webs. Published examples that are used in meta analysis are of variable quality with omissions. However, the number of empirical studies on community webs is on the rise and the mathematical treatment of food webs using network theory had identified patterns that are common to all. Scaling laws, for example, predict a relationship between the topology of food web predator-prey linkages and levels of species richness.

A food web (or food cycle) is a natural interconnection of food chains and a graphical representation (usually an image) of what-eats-what in an ecological community. Another name for food web is consumer-resource system. Ecologists can broadly lump all life forms into one of two categories called trophic levels: 1) the autotrophs, and 2) the heterotrophs. To maintain their bodies, grow, develop, and to reproduce, autotrophs produce organic matter from inorganic substances, including both minerals and gases such as carbon dioxide. These chemical reactions require energy, which mainly comes from the Sun and largely by photosynthesis, although a very small amount comes from hydrothermal vents and hot springs. A gradient exists between trophic levels running from complete autotrophs that obtain their sole source of carbon from the atmosphere, to mixotrophs (such as carnivorous plants) that are autotrophic organisms that partially obtain organic matter from sources other than the atmosphere, and complete heterotrophs that must feed to obtain organic matter. The linkages in a food web illustrate the feeding pathways, such as where heterotrophs obtain organic matter by feeding on autotrophs and other heterotrophs. The food web is a simplified illustration of the various methods of feeding that links an ecosystem into a unified system of exchange. There are different kinds of feeding relations that can be roughly divided into herbivory, carnivory, scavenging and parasitism. Some of the organic matter eaten by heterotrophs, such as sugars, provides energy. Autotrophs and heterotrophs come in all sizes, from microscopic to many tonnes - from cyanobacteria to giant redwoods, and from viruses and bdellovibrio to blue whales.

Charles Elton pioneered the concept of food cycles, food chains, and food size in his classical 1927 book "Animal Ecology"; Elton's 'food cycle' was replaced by 'food web' in a subsequent ecological text. Elton organized species into functional groups, which was the basis for Raymond Lindeman's classic and landmark paper in 1942 on trophic dynamics. Lindeman emphasized the important role of decomposer organisms in a trophic system of classification. The notion of a food web has a historical foothold in the writings of Charles Darwin and his terminology, including an "entangled bank", "web of life", "web of complex relations", and in reference to the decomposition actions of earthworms he talked about "the continued movement of the particles of earth". Even earlier, in 1768 John Bruckner described nature as "one continued web of life".

A simplified food web illustrating a three trophic food chain (producers-herbivores-carnivores) linked to decomposers. The movement of mineral nutrients is cyclic, whereas the movement of energy is unidirectional and noncyclic. Trophic species are encircled as nodes and arrows depict the links.[1][2] Food webs are the road-maps through Darwin's famous 'entangled bank' and have a long history in ecology. Like maps of unfamiliar ground, food webs appear bewilderingly complex. They were often published to make just that point. Yet recent studies have shown that food webs from a wide range of terrestrial, freshwater, and marine communities share a remarkable list of patterns.[3]:669

Links in food webs map the feeding connections (who eats whom) in an ecological community. Food cycle is an obsolete term that is synonymous with food web. Ecologists can broadly group all life forms into one of two trophic layers, the autotrophs and the heterotrophs. Autotrophs produce more biomass energy, either chemically without the sun's energy or by capturing the sun's energy in photosynthesis, than they use during metabolic respiration. Heterotrophs consume rather than produce biomass energy as they metabolize, grow, and add to levels of secondary production. A food web depicts a collection of polyphagous heterotrophic consumers that network and cycle the flow of energy and nutrients from a productive base of self-feeding autotrophs.[3][4][5]

The base or basal species in a food web are those species without prey and can include autotrophs or saprophytic detritivores (i.e., the community of decomposers in soil, biofilms, and periphyton). Feeding connections in the web are called trophic links. The number of trophic links per consumer is a measure of food web connectance. Food chains are nested within the trophic links of food webs. Food chains are linear (noncyclic) feeding pathways that trace monophagous consumers from a base species up to the top consumer, which is usually a larger predatory carnivore.[6][7][8]

Linkages connect to nodes in a food web, which are aggregates of biological taxa called trophic species. Trophic species are functional groups that have the same predators and prey in a food web. Common examples of an aggregated node in a food web might include parasites, microbes, decomposers, saprotrophs, consumers, or predators, each containing many species in a web that can otherwise be connected to other trophic species.[9][10]

A trophic pyramid (a) and a simplified community food web (b) illustrating ecological relations among creatures that are typical of a northern Boreal terrestrial ecosystem. The trophic pyramid roughly represents the biomass (usually measured as total dry-weight) at each level. Plants generally have the greatest biomass. Names of trophic categories are shown to the right of the pyramid. Some ecosystems, such as many wetlands, do not organize as a strict pyramid, because aquatic plants are not as productive as long-lived terrestrial plants such as trees. Ecological trophic pyramids are typically one of three kinds: 1) pyramid of numbers, 2) pyramid of biomass, or 3) pyramid of energy.[4]

Food webs have trophic levels and positions. Basal species, such as plants, form the first level and are the resource limited species that feed on no other living creature in the web. Basal species can be autotrophs or detritivores, including "decomposing organic material and its associated microorganisms which we defined as detritus, micro-inorganic material and associated microorganisms (MIP), and vascular plant material."[11]:94 Most autotrophs capture the sun's energy in chlorophyll, but some autotrophs (the chemolithotrophs) obtain energy by the chemical oxidation of inorganic compounds and can grow in dark environments, such as the sulfur bacterium Thiobacillus, which lives in hot sulfur springs. The top level has top (or apex) predators which no other species kills directly for its food resource needs. The intermediate levels are filled with omnivores that feed on more than one trophic level and cause energy to flow through a number of food pathways starting from a basal species.[12]

In the simplest scheme, the first trophic level (level 1) is plants, then herbivores (level 2), and then carnivores (level 3). The trophic level is equal to one more than the chain length, which is the number of links connecting to the base. The base of the food chain (primary producers or detritivores) is set at zero.[3][13] Ecologists identify feeding relations and organize species into trophic species through extensive gut content analysis of different species. The technique has been improved through the use of stable isotopes to better trace energy flow through the web.[14] It was once thought that omnivory was rare, but recent evidence suggests otherwise. This realization has made trophic classifications more complex.[15]

The trophic level concept was introduced in a historical landmark paper on trophic dynamics in 1942 by Raymond L. Lindeman. The basis of trophic dynamics is the transfer of energy from one part of the ecosystem to another.[13][16] The trophic dynamic concept has served as a useful quantitative heuristic, but it has several major limitations including the precision by which an organism can be allocated to a specific trophic level. Omnivores, for example, are not restricted to any single level. Nonetheless, recent research has found that discrete trophic levels do exist, but "above the herbivore trophic level, food webs are better characterized as a tangled web of omnivores."[15]

A central question in the trophic dynamic literature is the nature of control and regulation over resources and production. Ecologists use simplified one trophic position food chain models (producer, carnivore, decomposer). Using these models, ecologists have tested various types of ecological control mechanisms. For example, herbivores generally have an abundance of vegetative resources, which meant that their populations were largely controlled or regulated by predators. This is known as the top-down hypothesis or 'green-world' hypothesis. Alternatively to the top-down hypothesis, not all plant material is edible and the nutritional quality or antiherbivore defenses of plants (structural and chemical) suggests a bottom-up form of regulation or control.[17][18][19] Recent studies have concluded that both "top-down" and "bottom-up" forces can influence community structure and the strength of the influence is environmentally context dependent.[20][21] These complex multitrophic interactions involve more than two trophic levels in a food web.[22]

Another example of a multi-trophic interaction is a trophic cascade, in which predators help to increase plant growth and prevent overgrazing by suppressing herbivores. Links in a food-web illustrate direct trophic relations among species, but there are also indirect effects that can alter the abundance, distribution, or biomass in the trophic levels. For example, predators eating herbivores indirectly influence the control and regulation of primary production in plants. Although the predators do not eat the plants directly, they regulate the population of herbivores that are directly linked to plant trophism. The net effect of direct and indirect relations is called trophic cascades. Trophic cascades are separated into species-level cascades, where only a subset of the food-web dynamic is impacted by a change in population numbers, and community-level cascades, where a change in population numbers has a dramatic effect on the entire food-web, such as the distribution of plant biomass.[23]

Main article: Energy flow (ecology) See also: Ecological efficiency The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.[24]:11

Left: Energy flow diagram of a frog. The frog represents a node in an extended food web. The energy ingested is utilized for metabolic processes and transformed into biomass. The energy flow continues on its path if the frog is ingested by predators, parasites, or as a decaying carcass in soil. This energy flow diagram illustrates how energy is lost as it fuels the metabolic process that transform the energy and nutrients into biomass.
Right: An expanded three link energy food chain (1. plants, 2. herbivores, 3. carnivores) illustrating the relationship between food flow diagrams and energy transformity. The transformity of energy becomes degraded, dispersed, and diminished from higher quality to lesser quantity as the energy within a food chain flows from one trophic species into another. Abbreviations: I=input, A=assimilation, R=respiration, NU=not utilized, P=production, B=biomass.[25]

Food webs depict energy flow via trophic linkages. Energy flow is directional, which contrasts against the cyclic flows of material through the food web systems.[26] Energy flow "typically includes production, consumption, assimilation, non-assimilation losses (feces), and respiration (maintenance costs)."[5]:5 In a very general sense, energy flow (E) can be defined as the sum of metabolic production (P) and respiration (R), such that E=P+R.

Biomass represents stored energy. However, concentration and quality of nutrients and energy is variable. Many plant fibers, for example, are indigestible to many herbivores leaving grazer community food webs more nutrient limited than detrital food webs where bacteria are able to access and release the nutrient and energy stores.[27][28] "Organisms usually extract energy in the form of carbohydrates, lipids, and proteins. These polymers have a dual role as supplies of energy as well as building blocks; the part that functions as energy supply results in the production of nutrients (and carbon dioxide, water, and heat). Excretion of nutrients is, therefore, basic to metabolism."[28]:1230–1231 The units in energy flow webs are typically a measure mass or energy per m2 per unit time. Different consumers are going to have different metabolic assimilation efficiencies in their diets. Each trophic level transforms energy into biomass. Energy flow diagrams illustrate the rates and efficiency of transfer from one trophic level into another and up through the hierarchy.[29][30]

It is the case that the biomass of each trophic level decreases from the base of the chain to the top. This is because energy is lost to the environment with each transfer as entropy increases. About eighty to ninety percent of the energy is expended for the organism’s life processes or is lost as heat or waste. Only about ten to twenty percent of the organism’s energy is generally passed to the next organism.[31] The amount can be less than one percent in animals consuming less digestible plants, and it can be as high as forty percent in zooplankton consuming phytoplankton.[32] Graphic representations of the biomass or productivity at each tropic level are called ecological pyramids or trophic pyramids. The transfer of energy from primary producers to top consumers can also be characterized by energy flow diagrams.[33]

Main article: food chain

A common metric used to quantify food web trophic structure is food chain length. Food chain length is another way of describing food webs as a measure of the number of species encountered as energy or nutrients move from the plants to top predators.[34]:269 There are different ways of calculating food chain length depending on what parameters of the food web dynamic are being considered: connectance, energy, or interaction.[34] In its simplest form, the length of a chain is the number of links between a trophic consumer and the base of the web. The mean chain length of an entire web is the arithmetic average of the lengths of all chains in a food web.[35][12]

In a simple predator-prey example, a deer is one step removed from the plants it eats (chain length = 1) and a wolf that eats the deer is two steps removed from the plants (chain length = 2). The relative amount or strength of influence that these parameters have on the food web address questions about:

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A steam turbine with the case opened. Such turbines produce most of the electricity that people use. Electricity consumption and living standards are highly correlated.[1] Electrification is believed to be the most important engineering achievement of the 20th century. Technology ("science of craft", from Greek τέχνη, techne, "art, skill, cunning of hand"; and -λογία, -logia[2]) is the collection of techniques, skills, methods and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation. Technology can be the knowledge of techniques, processes, and the like, or it can be embedded in machines which can be operated without detailed knowledge of their workings. The simplest form of technology is the development and use of basic tools. The prehistoric discovery of how to control fire and the later Neolithic Revolution increased the available sources of food and the invention of the wheel helped humans to travel in and control their environment. Developments in historic times, including the printing press, the telephone, and the Internet, have lessened physical barriers to communication and allowed humans to interact freely on a global scale. The steady progress of military technology has brought weapons of ever-increasing destructive power, from clubs to nuclear weapons. Technology has many effects. It has helped develop more advanced economies (including today's global economy) and has allowed the rise of a leisure class. Many technological processes produce unwanted by-products known as pollution and deplete natural resources to the detriment of Earth's environment. Innovations have always influenced the values of a society and raised new questions of the ethics of technology. Examples include the rise of the notion of efficiency in terms of human productivity, and the challenges of bioethics. Philosophical debates have arisen over the use of technology, with disagreements over whether technology improves the human condition or worsens it. Neo-Luddism, anarcho-primitivism, and similar reactionary movements criticise the pervasiveness of technology, arguing that it harms the environment and alienates people; proponents of ideologies such as transhumanism and techno-progressivism view continued technological progress as beneficial to society and the human condition. The spread of paper and printing to the West, as in this printing press, helped scientists and politicians communicate their ideas easily, leading to the Age of Enlightenment; an example of technology as cultural force. The use of the term "technology" has changed significantly over the last 200 years. Before the 20th century, the term was uncommon in English, and usually referred to the description or study of the useful arts.[3] The term was often connected to technical education, as in the Massachusetts Institute of Technology (chartered in 1861).[4] The term "technology" rose to prominence in the 20th century in connection with the Second Industrial Revolution. The term's meanings changed in the early 20th century when American social scientists, beginning with Thorstein Veblen, translated ideas from the German concept of Technik into "technology." In German and other European languages, a distinction exists between technik and technologie that is absent in English, which usually translates both terms as "technology." By the 1930s, "technology" referred not only to the study of the industrial arts but to the industrial arts themselves.[5] In 1937, the American sociologist Read Bain wrote that "technology includes all tools, machines, utensils, weapons, instruments, housing, clothing, communicating and transporting devices and the skills by which we produce and use them."[6] Bain's definition remains common among scholars today, especially social scientists. Scientists and engineers usually prefer to define technology as applied science, rather than as the things that people make and use.[7] More recently, scholars have borrowed from European philosophers of "technique" to extend the meaning of technology to various forms of instrumental reason, as in Foucault's work on technologies of the self (techniques de soi). Dictionaries and scholars have offered a variety of definitions. The Merriam-Webster Learner's Dictionary offers a definition of the term: "the use of science in industry, engineering, etc., to invent useful things or to solve problems" and "a machine, piece of equipment, method, etc., that is created by technology."[8] Ursula Franklin, in her 1989 "Real World of Technology" lecture, gave another definition of the concept; it is "practice, the way we do things around here."[9] The term is often used to imply a specific field of technology, or to refer to high technology or just consumer electronics, rather than technology as a whole.[10] Bernard Stiegler, in Technics and Time, 1, defines technology in two ways: as "the pursuit of life by means other than life," and as "organized inorganic matter."[11] Technology can be most broadly defined as the entities, both material and immaterial, created by the application of mental and physical effort in order to achieve some value. In this usage, technology refers to tools and machines that may be used to solve real-world problems. It is a far-reaching term that may include simple tools, such as a crowbar or wooden spoon, or more complex machines, such as a space station or particle accelerator. Tools and machines need not be material; virtual technology, such as computer software and business methods, fall under this definition of technology.[12] W. Brian Arthur defines technology in a similarly broad way as "a means to fulfill a human purpose."[13] The word "technology" can also be used to refer to a collection of techniques. In this context, it is the current state of humanity's knowledge of how to combine resources to produce desired products, to solve problems, fulfill needs, or satisfy wants; it includes technical methods, skills, processes, techniques, tools and raw materials. When combined with another term, such as "medical technology" or "space technology," it refers to the state of the respective field's knowledge and tools. "State-of-the-art technology" refers to the high technology available to humanity in any field. The invention of integrated circuits and the microprocessor (here, an Intel 4004 chip from 1971) led to the modern computer revolution. Technology can be viewed as an activity that forms or changes culture.[14] Additionally, technology is the application of math, science, and the arts for the benefit of life as it is known. A modern example is the rise of communication technology, which has lessened barriers to human interaction and as a result has helped spawn new subcultures; the rise of cyberculture has at its basis the development of the Internet and the computer.[15] Not all technology enhances culture in a creative way; technology can also help facilitate political oppression and war via tools such as guns. As a cultural activity, technology predates both science and engineering, each of which formalize some aspects of technological endeavor.

Antoine Lavoisier conducting an experiment with combustion generated by amplified sun light The distinction between science, engineering, and technology is not always clear. Science is systematic knowledge of the physical or material world gained through observation and experimentation.[16] Technologies are not usually exclusively products of science, because they have to satisfy requirements such as utility, usability, and safety. Engineering is the goal-oriented process of designing and making tools and systems to exploit natural phenomena for practical human means, often (but not always) using results and techniques from science. The development of technology may draw upon many fields of knowledge, including scientific, engineering, mathematical, linguistic, and historical knowledge, to achieve some practical result. Technology is often a consequence of science and engineering, although technology as a human activity precedes the two fields. For example, science might study the flow of electrons in electrical conductors by using already-existing tools and knowledge. This new-found knowledge may then be used by engineers to create new tools and machines such as semiconductors, computers, and other forms of advanced technology. In this sense, scientists and engineers may both be considered technologists; the three fields are often considered as one for the purposes of research and reference.[17] The exact relations between science and technology in particular have been debated by scientists, historians, and policymakers in the late 20th century, in part because the debate can inform the funding of basic and applied science. In the immediate wake of World War II, for example, it was widely considered in the United States that technology was simply "applied science" and that to fund basic science was to reap technological results in due time. An articulation of this philosophy could be found explicitly in Vannevar Bush's treatise on postwar science policy, Science – The Endless Frontier: "New products, new industries, and more jobs require continuous additions to knowledge of the laws of nature ... This essential new knowledge can be obtained only through basic scientific research."[18] In the late-1960s, however, this view came under direct attack, leading towards initiatives to fund science for specific tasks (initiatives resisted by the scientific community).

The issue remains contentious, though most analysts resist the model that technology simply is a result of scientific research.[19][20] Main articles: History of technology, Timeline of historic inventions, and Timeline of electrical and electronic engineering A primitive chopper Further information: Outline of prehistoric technology The use of tools by early humans was partly a process of discovery and of evolution. Early humans evolved from a species of foraging hominids which were already bipedal,[21] with a brain mass approximately one third of modern humans.[22] Tool use remained relatively unchanged for most of early human history. Approximately 50,000 years ago, the use of tools and complex set of behaviors emerged, believed by many archaeologists to be connected to the emergence of fully modern language.[23] Hand axes from the Acheulian period A Clovis point, made via pressure flaking Hominids started using primitive stone tools millions of years ago. The earliest stone tools were little more than a fractured rock, but approximately 75,000 years ago,[24] pressure flaking provided a way to make much finer work. Main article: Control of fire by early humans The discovery and utilization of fire, a simple energy source with many profound uses, was a turning point in the technological evolution of humankind.[25] The exact date of its discovery is not known; evidence of burnt animal bones at the Cradle of Humankind suggests that the domestication of fire occurred before 1 Ma;[26] scholarly consensus indicates that Homo erectus had controlled fire by between 500 and 400 ka.[27][28] Fire, fueled with wood and charcoal, allowed early humans to cook their food to increase its digestibility, improving its nutrient value and broadening the number of foods that could be eaten.[29] Other technological advances made during the Paleolithic era were clothing and shelter; the adoption of both technologies cannot be dated exactly, but they were a key to humanity's progress. As the Paleolithic era progressed, dwellings became more sophisticated and more elaborate; as early as 380 ka, humans were constructing temporary wood huts.[30][31] Clothing, adapted from the fur and hides of hunted animals, helped humanity expand into colder regions; humans began to migrate out of Africa by 200 ka and into other continents such as Eurasia.[32] An array of Neolithic artifacts, including bracelets, axe heads, chisels, and polishing tools Human's technological ascent began in earnest in what is known as the Neolithic Period ("New Stone Age"). The invention of polished stone axes was a major advance that allowed forest clearance on a large scale to create farms. This use of polished stone axes increased greatly in the Neolithic, but were originally used in the preceding Mesolithic in some areas such as Ireland.[33] Agriculture fed larger populations, and the transition to sedentism allowed simultaneously raising more children, as infants no longer needed to be carried, as nomadic ones must. Additionally, children could contribute labor to the raising of crops more readily than they could to the hunter-gatherer economy.[34][35] With this increase in population and availability of labor came an increase in labor specialization.[36] What triggered the progression from early Neolithic villages to the first cities, such as Uruk, and the first civilizations, such as Sumer, is not specifically known; however, the emergence of increasingly hierarchical social structures and specialized labor, of trade and war amongst adjacent cultures, and the need for collective action to overcome environmental challenges such as irrigation, are all thought to have played a role.[37] Continuing improvements led to the furnace and bellows and provided the ability to smelt and forge native metals (naturally occurring in relatively pure form).[38] Gold, copper, silver, and lead, were such early metals.

The advantages of copper tools over stone, bone, and wooden tools were quickly apparent to early humans, and native copper was probably used from near the beginning of Neolithic times (about 10 ka).[39] Native copper does not naturally occur in large amounts, but copper ores are quite common and some of them produce metal easily when burned in wood or charcoal fires. Eventually, the working of metals led to the discovery of alloys such as bronze and brass (about 4000 BCE). The first uses of iron alloys such as steel dates to around 1800 BCE.[40][41] The wheel was invented circa 4000 BCE. Main article: History of transport Meanwhile, humans were learning to harness other forms of energy. The earliest known use of wind power is the sailboat; the earliest record of a ship under sail is that of a Nile boat that dates back to the 8th millennium BCE.[42] From prehistoric times, Egyptians probably used the power of the annual flooding of the Nile to irrigate their lands, gradually learning to regulate much of it through purposely built irrigation channels and "catch" basins. Similarly, the early peoples of Mesopotamia, the Sumerians, learned to use the Tigris and Euphrates Rivers for much the same purposes. However, more extensive use of wind and water (and even human) power required another invention. According to archaeologists, the wheel was invented around 4000 BCE probably independently and nearly simultaneously in Mesopotamia (in present-day Iraq), the Northern Caucasus (Maykop culture) and Central Europe.[43] Estimates on when this may have occurred range from 5500 to 3000 BCE with most experts putting it closer to 4000 BCE.[44] The oldest artifacts with drawings that depict wheeled carts date from about 3500 BCE;[45] however, the wheel may have been in use for millennia before these drawings were made. There is also evidence from the same period for the use of the potter's wheel. More recently, the oldest-known wooden wheel in the world was found in the Ljubljana marshes of Slovenia.[46] The invention of the wheel revolutionized trade and war. It did not take long to discover that wheeled wagons could be used to carry heavy loads. Fast (rotary) potters' wheels enabled early mass production of pottery, but it was the use of the wheel as a transformer of energy (through water wheels, windmills, and even treadmills) that revolutionized the application of nonhuman power sources.

Main articles: Medieval technology, Renaissance technology, Industrial Revolution, Second Industrial Revolution, Information Technology, and Productivity improving technologies (economic history) Innovations continued through the Middle Ages with innovations such as silk, the horse collar and horseshoes in the first few hundred years after the fall of the Roman Empire. Medieval technology saw the use of simple machines (such as the lever, the screw, and the pulley) being combined to form more complicated tools, such as the wheelbarrow, windmills and clocks. The Renaissance brought forth many of these innovations, including the printing press (which facilitated the greater communication of knowledge), and technology became increasingly associated with science, beginning a cycle of mutual advancement. The advancements in technology in this era allowed a more steady supply of food, followed by the wider availability of consumer goods. The automobile revolutionized personal transportation. Starting in the United Kingdom in the 18th century, the Industrial Revolution was a period of great technological discovery, particularly in the areas of agriculture, manufacturing, mining, metallurgy, and transport, driven by the discovery of steam power. Technology took another step in a second industrial revolution with the harnessing of electricity to create such innovations as the electric motor, light bulb, and countless others. Scientific advancement and the discovery of new concepts later allowed for powered flight and advancements in medicine, chemistry, physics, and engineering. The rise in technology has led to skyscrapers and broad urban areas whose inhabitants rely on motors to transport them and their food supply. Communication was also greatly improved with the invention of the telegraph, telephone, radio and television. The late 19th and early 20th centuries saw a revolution in transportation with the invention of the airplane and automobile. F-15 and F-16 flying over Kuwaiti oil fires during the Gulf War in 1991. The 20th century brought a host of innovations. In physics, the discovery of nuclear fission has led to both nuclear weapons and nuclear power. Computers were also invented and later miniaturized utilizing transistors and integrated circuits. Information technology subsequently led to the creation of the Internet, which ushered in the current Information Age. Humans have also been able to explore space with satellites (later used for telecommunication) and in manned missions going all the way to the moon. In medicine, this era brought innovations such as open-heart surgery and later stem cell therapy along with new medications and treatments. Complex manufacturing and construction techniques and organizations are needed to make and maintain these new technologies, and entire industries have arisen to support and develop succeeding generations of increasingly more complex tools. Modern technology increasingly relies on training and education – their designers, builders, maintainers, and users often require sophisticated general and specific training. Moreover, these technologies have become so complex that entire fields have been created to support them, including engineering, medicine, and computer science, and other fields have been made more complex, such as construction, transportation and architecture. Generally, technicism is the belief in the utility of technology for improving human societies.[47] Taken to an extreme, technicism "reflects a fundamental attitude which seeks to control reality, to resolve all problems with the use of scientific-technological methods and tools."[48] In other words, human beings will someday be able to master all problems and possibly even control the future using technology. Some, such as Stephen V. Monsma,[49] connect these ideas to the abdication of religion as a higher moral authority.

See also: Extropianism Optimistic assumptions are made by proponents of ideologies such as transhumanism and singularitarianism, which view technological development as generally having beneficial effects for the society and the human condition. In these ideologies, technological development is morally good. Transhumanists generally believe that the point of technology is to overcome barriers, and that what we commonly refer to as the human condition is just another barrier to be surpassed. Singularitarians believe in some sort of "accelerating change"; that the rate of technological progress accelerates as we obtain more technology, and that this will culminate in a "Singularity" after artificial general intelligence is invented in which progress is nearly infinite; hence the term. Estimates for the date of this Singularity vary,[50] but prominent futurist Ray Kurzweil estimates the Singularity will occur in 2045. Kurzweil is also known for his history of the universe in six epochs: (1) the physical/chemical epoch, (2) the life epoch, (3) the human/brain epoch, (4) the technology epoch, (5) the artificial intelligence epoch, and (6) the universal colonization epoch. Going from one epoch to the next is a Singularity in its own right, and a period of speeding up precedes it. Each epoch takes a shorter time, which means the whole history of the universe is one giant Singularity event.[51] Some critics see these ideologies as examples of scientism and techno-utopianism and fear the notion of human enhancement and technological singularity which they support.

Some have described Karl Marx as a techno-optimist.[52] See also: Luddite, Neo-Luddism, Anarcho-primitivism, and Bioconservatism Luddites smashing a power loom in 1812 On the somewhat skeptical side are certain philosophers like Herbert Marcuse and John Zerzan, who believe that technological societies are inherently flawed. They suggest that the inevitable result of such a society is to become evermore technological at the cost of freedom and psychological health. Many, such as the Luddites and prominent philosopher Martin Heidegger, hold serious, although not entirely, deterministic reservations about technology (see "The Question Concerning Technology"[53]). According to Heidegger scholars Hubert Dreyfus and Charles Spinosa, "Heidegger does not oppose technology. He hopes to reveal the essence of technology in a way that 'in no way confines us to a stultified compulsion to push on blindly with technology or, what comes to the same thing, to rebel helplessly against it.' Indeed, he promises that 'when we once open ourselves expressly to the essence of technology, we find ourselves unexpectedly taken into a freeing claim.'[54] What this entails is a more complex relationship to technology than either techno-optimists or techno-pessimists tend to allow."[55] Some of the most poignant criticisms of technology are found in what are now considered to be dystopian literary classics such as Aldous Huxley's Brave New World, Anthony Burgess's A Clockwork Orange, and George Orwell's Nineteen Eighty-Four. In Goethe's Faust, Faust selling his soul to the devil in return for power over the physical world is also often interpreted as a metaphor for the adoption of industrial technology. More recently, modern works of science fiction such as those by Philip K. Dick and William Gibson and films such as Blade Runner and Ghost in the Shell project highly ambivalent or cautionary attitudes toward technology's impact on human society and identity. The late cultural critic Neil Postman distinguished tool-using societies from technological societies and from what he called "technopolies," societies that are dominated by the ideology of technological and scientific progress to the exclusion or harm of other cultural practices, values and world-views.[56] Darin Barney has written about technology's impact on practices of citizenship and democratic culture, suggesting that technology can be construed as (1) an object of political debate, (2) a means or medium of discussion, and (3) a setting for democratic deliberation and citizenship. As a setting for democratic culture, Barney suggests that technology tends to make ethical questions, including the question of what a good life consists in, nearly impossible, because they already give an answer to the question: a good life is one that includes the use of more and more technology.[57] Nikolas Kompridis has also written about the dangers of new technology, such as genetic engineering, nanotechnology, synthetic biology, and robotics. He warns that these technologies introduce unprecedented new challenges to human beings, including the possibility of the permanent alteration of our biological nature. These concerns are shared by other philosophers, scientists and public intellectuals who have written about similar issues (e.g. Francis Fukuyama, Jürgen Habermas, William Joy, and Michael Sandel).[58] Another prominent critic of technology is Hubert Dreyfus, who has published books such as On the Internet and What Computers Still Can't Do.

A more infamous anti-technological treatise is Industrial Society and Its Future, written by the Unabomber Ted Kaczynski and printed in several major newspapers (and later books) as part of an effort to end his bombing campaign of the techno-industrial infrastructure. See also: Technocriticism and Technorealism The notion of appropriate technology was developed in the 20th century by thinkers such as E. F. Schumacher and Jacques Ellul to describe situations where it was not desirable to use very new technologies or those that required access to some centralized infrastructure or parts or skills imported from elsewhere. The ecovillage movement emerged in part due to this concern. This section mainly focuses on American concerns even if it can reasonably be generalized to other Western countries. The inadequate quantity and quality of American jobs is one of the most fundamental economic challenges we face. [...] What's the linkage between technology and this fundamental problem? — Bernstein, Jared, "It’s Not a Skills Gap That’s Holding Wages Down: It’s the Weak Economy, Among Other Things," in The American Prospect, October 2014 In his article, Jared Bernstein, a Senior Fellow at the Center on Budget and Policy Priorities,[59] questions the widespread idea that automation, and more broadly, technological advances, have mainly contributed to this growing labor market problem. His thesis appears to be a third way between optimism and skepticism. Essentially, he stands for a neutral approach of the linkage between technology and American issues concerning unemployment and declining wages. He uses two main arguments to defend his point. First, because of recent technological advances, an increasing number of workers are losing their jobs. Yet, scientific evidence fails to clearly demonstrate that technology has displaced so many workers that it has created more problems than it has solved. Indeed, automation threatens repetitive jobs but higher-end jobs are still necessary because they complement technology and manual jobs that "requires flexibility judgment and common sense"[60] remain hard to replace with machines. Second, studies have not shown clear links between recent technology advances and the wage trends of the last decades. Therefore, according to Bernstein, instead of focusing on technology and its hypothetical influences on current American increasing unemployment and declining wages, one needs to worry more about "bad policy that fails to offset the imbalances in demand, trade, income and opportunity."[60] Thomas P. Hughes stated that because technology has been considered as a key way to solve problems, we need to be aware of its complex and varied characters to use it more efficiently.[61] What is the difference between a wheel or a compass and cooking machines such as an oven or a gas stove? Can we consider all of them, only a part of them, or none of them as technologies? Technology is often considered too narrowly; according to Hughes, "Technology is a creative process involving human ingenuity.[62] This definition's emphasis on creativity avoids unbounded definitions that may mistakenly include cooking “technologies," but it also highlights the prominent role of humans and therefore their responsibilities for the use of complex technological systems. Yet, because technology is everywhere and has dramatically changed landscapes and societies, Hughes argues that engineers, scientists, and managers have often believed that they can use technology to shape the world as they want.

They have often supposed that technology is easily controllable and this assumption has to be thoroughly questioned.[61] For instance, Evgeny Morozov particularly challenges two concepts: “Internet-centrism” and “solutionism."[63] Internet-centrism refers to the idea that our society is convinced that the Internet is one of the most stable and coherent forces. Solutionism is the ideology that every social issue can be solved thanks to technology and especially thanks to the internet. In fact, technology intrinsically contains uncertainties and limitations. According to Alexis Madrigal's review of Morozov's theory, to ignore it will lead to “unexpected consequences that could eventually cause more damage than the problems they seek to address."[64] Benjamin R. Cohen and Gwen Ottinger also discussed the multivalent effects of technology.[65] Therefore, recognition of the limitations of technology, and more broadly, scientific knowledge, is needed – especially in cases dealing with environmental justice and health issues. Ottinger continues this reasoning and argues that the ongoing recognition of the limitations of scientific knowledge goes hand in hand with scientists and engineers’ new comprehension of their role. Such an approach of technology and science "[require] technical professionals to conceive of their roles in the process differently. [They have to consider themselves as] collaborators in research and problem solving rather than simply providers of information and technical solutions."[66] Technology is properly defined as any application of science to accomplish a function. The science can be leading edge or well established and the function can have high visibility or be significantly more mundane, but it is all technology, and its exploitation is the foundation of all competitive advantage. Technology-based planning is what was used to build the US industrial giants before WWII (e.g., Dow, DuPont, GM) and it is what was used to transform the US into a superpower. It was not economic-based planning. See also: Tool use by animals, Structures built by animals, and Ecosystem engineer This adult gorilla uses a branch as a walking stick to gauge the water's depth, an example of technology usage by non-human primates. The use of basic technology is also a feature of other animal species apart from humans. These include primates such as chimpanzees,[67] some dolphin communities,[68] and crows.[69][70] Considering a more generic perspective of technology as ethology of active environmental conditioning and control, we can also refer to animal examples such as beavers and their dams, or bees and their honeycombs. The ability to make and use tools was once considered a defining characteristic of the genus Homo.[71] However, the discovery of tool construction among chimpanzees and related primates has discarded the notion of the use of technology as unique to humans. For example, researchers have observed wild chimpanzees utilising tools for foraging: some of the tools used include leaf sponges, termite fishing probes, pestles and levers.[72] West African chimpanzees also use stone hammers and anvils for cracking nuts,[73] as do capuchin monkeys of Boa Vista, Brazil.[74] Main article: Emerging technologies Theories of technology often attempt to predict the future of technology based on the high technology and science of the time. As with all predictions of the future, however, technology's is uncertain. Futurist Ray Kurzweil predicts that the future of technology will be mainly consist of an overlapping "GNR Revolution" of Genetics, Nanotechnology, and Robotics, with robotics being the most important of the three.[75] Main article: Outline of technology Theories and concepts in technology Economics of technology Technology journalism Other Find more aboutTechnologyat Wikipedia's sister projects Content is like water, a saying that illustrates the principles of RWD An example of how various elements of a web page adapt to the screen size of different devices such as the display of a desktop computer, tablet PC and a smartphone Responsive web design (RWD) is an approach to web design aimed at allowing desktop webpages to be viewed in response to the size of the screen or web browser one is viewing with.

In addition it's important to understand that Responsive Web Design tasks include offering the same support to a variety of devices for a single website. Recent work also considers the viewer proximity as part of the viewing context as an extension for RWD[1]. As mentioned by the Nielsen Norman Group: content, design and performance are necessary across all devices to ensure usability and satisfaction.[2][3][4][5] A site designed with RWD[2][6] adapts the layout to the viewing environment by using fluid, proportion-based grids,[7][8] flexible images,[9][10][11] and CSS3 media queries,[4][12][13] an extension of the @media rule, in the following ways:[14] Responsive web design has become more important as the amount of mobile traffic now accounts for more than half of total internet traffic.[15] Therefore, Google announced Mobilegeddon in 2015, and started to boost the ratings of sites that are mobile friendly if the search was made from a mobile device.[16] Responsive web design is an example of user interface plasticity.[17] "Mobile first", unobtrusive JavaScript, and progressive enhancement are related concepts that predate RWD.[18] Browsers of basic mobile phones do not understand JavaScript or media queries, so a recommended practice is to create a basic web site and enhance it for smart phones and PCs, rather than rely on graceful degradation to make a complex, image-heavy site work on mobile phones.[19][20][21][22] Where a web site must support basic mobile devices that lack JavaScript, browser ("user agent") detection (also called "browser sniffing") and mobile device detection[20][23] are two ways of deducing if certain HTML and CSS features are supported (as a basis for progressive enhancement)—however, these methods are not completely reliable unless used in conjunction with a device capabilities database. For more capable mobile phones and PCs, JavaScript frameworks like Modernizr, jQuery, and jQuery Mobile that can directly test browser support for HTML/CSS features (or identify the device or user agent) are popular. Polyfills can be used to add support for features—e.g. to support media queries (required for RWD), and enhance HTML5 support, on Internet Explorer. Feature detection also might not be completely reliable; some may report that a feature is available, when it is either missing or so poorly implemented that it is effectively nonfunctional.[24][25] Luke Wroblewski has summarized some of the RWD and mobile design challenges, and created a catalog of multi-device layout patterns.[26][27][28] He suggests that, compared with a simple RWD approach, device experience or RESS (responsive web design with server-side components) approaches can provide a user experience that is better optimized for mobile devices.[29][30][31] Server-side "dynamic CSS" implementation of stylesheet languages like Sass or Incentivated's MML can be part of such an approach by accessing a server based API which handles the device (typically mobile handset) differences in conjunction with a device capabilities database in order to improve usability.[32] RESS is more expensive to develop, requiring more than just client-side logic, and so tends to be reserved for organizations with larger budgets. Google recommends responsive design for smartphone websites over other approaches.[33] Although many publishers are starting to implement responsive designs, one ongoing challenge for RWD is that some banner advertisements and videos are not fluid.[34] However, search advertising and (banner) display advertising support specific device platform targeting and different advertisement size formats for desktop, smartphone, and basic mobile devices. Different landing page URLs can be used for different platforms,[35] or Ajax can be used to display different advertisement variants on a page.[23][27][36] CSS tables permit hybrid fixed+fluid layouts.[37] There are now many ways of validating and testing RWD designs,[38] ranging from mobile site validators and mobile emulators[39] to simultaneous testing tools like Adobe Edge Inspect.[40] The Chrome, Firefox and Safari browsers and the Chrome console offer responsive design viewport resizing tools, as do third parties.[41][42] Use cases of RWD will now expand further with increased mobile usage; according to Statista, organic search engine visits in the US coming from mobile devices has hit 51% and are increasing.[43] The first site to feature a layout that adapts to browser viewport width was Audi.com launched in late 2001,[44] created by a team at razorfish consisting of Jürgen Spangl and Jim Kalbach (information architecture), Ken Olling (design), and Jan Hoffmann (interface development). Limited browser capabilities meant that for Internet Explorer, the layout could adapt dynamically in the browser whereas for Netscape, the page had to be reloaded from the server when resized. Cameron Adams created a demonstration in 2004 that is still online.[45] By 2008, a number of related terms such as "flexible", "liquid",[46] "fluid", and "elastic" were being used to describe layouts.

CSS3 media queries were almost ready for prime time in late 2008/early 2009.[47] Ethan Marcotte coined the term responsive web design[48] (RWD)—and defined it to mean fluid grid/ flexible images/ media queries—in a May 2010 article in A List Apart.[2] He described the theory and practice of responsive web design in his brief 2011 book titled Responsive Web Design. Responsive design was listed as #2 in Top Web Design Trends for 2012 by .net magazine[49] after progressive enhancement at #1. Mashable called 2013 the Year of Responsive Web Design.[50] Many other sources have recommended responsive design as a cost-effective alternative to mobile applications.If you’ve already invested in a bunch of code in another framework, or if you have specific requirements that would be better served by Angular or React or something else, Predix UI is still here to help you. Jump over to our documentation site and start using the Predix UI components to speed up your work.

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Web Design Business

Web design encompasses many different skills and disciplines in the production and maintenance of websites. The different areas of web design include web graphic design; interface design; authoring, including standardised code and proprietary software; user experience design; and search engine optimization. Often many individuals will work in teams covering different aspects of the design process, although some designers will cover them all.[1] The term web design is normally used to describe the design process relating to the front-end (client side) design of a website including writing mark up. Web design partially overlaps web engineering in the broader scope of web development. Web designers are expected to have an awareness of usability and if their role involves creating mark up then they are also expected to be up to date with web accessibility guidelines.

Web design books in a store

Although web design has a fairly recent history, it can be linked to other areas such as graphic design. However, web design can also be seen from a technological standpoint. It has become a large part of people’s everyday lives. It is hard to imagine the Internet without animated graphics, different styles of typography, background, and music.

In 1989, whilst working at CERN Tim Berners-Lee proposed to create a global hypertext project, which later became known as the World Wide Web. During 1991 to 1993 the World Wide Web was born. Text-only pages could be viewed using a simple line-mode browser.[2] In 1993 Marc Andreessen and Eric Bina, created the Mosaic browser. At the time there were multiple browsers, however the majority of them were Unix-based and naturally text heavy. There had been no integrated approach to graphic design elements such as images or sounds. The Mosaic browser broke this mould.[3] The W3C was created in October 1994 to "lead the World Wide Web to its full potential by developing common protocols that promote its evolution and ensure its interoperability."[4] This discouraged any one company from monopolizing a propriety browser and programming language, which could have altered the effect of the World Wide Web as a whole. The W3C continues to set standards, which can today be seen with JavaScript. In 1994 Andreessen formed Communications Corp. that later became known as Netscape Communications, the Netscape 0.9 browser. Netscape created its own HTML tags without regard to the traditional standards process. For example, Netscape 1.1 included tags for changing background colours and formatting text with tables on web pages. Throughout 1996 to 1999 the browser wars began, as Microsoft and Netscape fought for ultimate browser dominance. During this time there were many new technologies in the field, notably Cascading Style Sheets, JavaScript, and Dynamic HTML. On the whole, the browser competition did lead to many positive creations and helped web design evolve at a rapid pace.[5]

In 1996, Microsoft released its first competitive browser, which was complete with its own features and tags. It was also the first browser to support style sheets, which at the time was seen as an obscure authoring technique.[5] The HTML markup for tables was originally intended for displaying tabular data. However designers quickly realized the potential of using HTML tables for creating the complex, multi-column layouts that were otherwise not possible. At this time, as design and good aesthetics seemed to take precedence over good mark-up structure, and little attention was paid to semantics and web accessibility. HTML sites were limited in their design options, even more so with earlier versions of HTML. To create complex designs, many web designers had to use complicated table structures or even use blank spacer .GIF images to stop empty table cells from collapsing.[6]CSS was introduced in December 1996 by the W3C to support presentation and layout. This allowed HTML code to be semantic rather than both semantic and presentational, and improved web accessibility, see tableless web design.

In 1996, Flash (originally known as FutureSplash) was developed. At the time, the Flash content development tool was relatively simple compared to now, using basic layout and drawing tools, a limited precursor to ActionScript, and a timeline, but it enabled web designers to go beyond the point of HTML, animated GIFs and JavaScript. However, because Flash required a plug-in, many web developers avoided using it for fear of limiting their market share due to lack of compatibility. Instead, designers reverted to gif animations (if they didn't forego using motion graphics altogether) and JavaScript for widgets. But the benefits of Flash made it popular enough among specific target markets to eventually work its way to the vast majority of browsers, and powerful enough to be used to develop entire sites.[6]

During 1998 Netscape released Netscape Communicator code under an open source licence, enabling thousands of developers to participate in improving the software. However, they decided to start from the beginning, which guided the development of the open source browser and soon expanded to a complete application platform.[5] The Web Standards Project was formed and promoted browser compliance with HTML and CSS standards by creating Acid1, Acid2, and Acid3 tests. 2000 was a big year for Microsoft. Internet Explorer was released for Mac; this was significant as it was the first browser that fully supported HTML 4.01 and CSS 1, raising the bar in terms of standards compliance. It was also the first browser to fully support the PNG image format.[5] During this time Netscape was sold to AOL and this was seen as Netscape’s official loss to Microsoft in the browser wars.[5]

Since the start of the 21st century the web has become more and more integrated into peoples lives. As this has happened the technology of the web has also moved on. There have also been significant changes in the way people use and access the web, and this has changed how sites are designed.

Since the end of the browsers wars new browsers have been released. Many of these are open source meaning that they tend to have faster development and are more supportive of new standards. The new options are considered by many[weasel words] to be better than Microsoft's Internet Explorer.

The W3C has released new standards for HTML (HTML5) and CSS (CSS3), as well as new JavaScript API's, each as a new but individual standard.[when?] While the term HTML5 is only used to refer to the new version of HTML and some of the JavaScript API's, it has become common to use it to refer to the entire suite of new standards (HTML5, CSS3 and JavaScript).

Web designers use a variety of different tools depending on what part of the production process they are involved in. These tools are updated over time by newer standards and software but the principles behind them remain the same. Web designers use both vector and raster graphics editors to create web-formatted imagery or design prototypes. Technologies used to create websites include W3C standards like HTML and CSS, which can be hand-coded or generated by WYSIWYG editing software. Other tools web designers might use include mark up validators[7] and other testing tools for usability and accessibility to ensure their websites meet web accessibility guidelines.[8]

Marketing and communication design on a website may identify what works for its target market. This can be an age group or particular strand of culture; thus the designer may understand the trends of its audience. Designers may also understand the type of website they are designing, meaning, for example, that (B2B) business-to-business website design considerations might differ greatly from a consumer targeted website such as a retail or entertainment website. Careful consideration might be made to ensure that the aesthetics or overall design of a site do not clash with the clarity and accuracy of the content or the ease of web navigation,[9] especially on a B2B website. Designers may also consider the reputation of the owner or business the site is representing to make sure they are portrayed favourably.

User understanding of the content of a website often depends on user understanding of how the website works. This is part of the user experience design. User experience is related to layout, clear instructions and labeling on a website. How well a user understands how they can interact on a site may also depend on the interactive design of the site. If a user perceives the usefulness of the website, they are more likely to continue using it. Users who are skilled and well versed with website use may find a more distinctive, yet less intuitive or less user-friendly website interface useful nonetheless. However, users with less experience are less likely to see the advantages or usefulness of a less intuitive website interface. This drives the trend for a more universal user experience and ease of access to accommodate as many users as possible regardless of user skill.[10] Much of the user experience design and interactive design are considered in the user interface design.

Advanced interactive functions may require plug-ins if not advanced coding language skills. Choosing whether or not to use interactivity that requires plug-ins is a critical decision in user experience design. If the plug-in doesn't come pre-installed with most browsers, there's a risk that the user will have neither the know how or the patience to install a plug-in just to access the content. If the function requires advanced coding language skills, it may be too costly in either time or money to code compared to the amount of enhancement the function will add to the user experience. There's also a risk that advanced interactivity may be incompatible with older browsers or hardware configurations. Publishing a function that doesn't work reliably is potentially worse for the user experience than making no attempt. It depends on the target audience if it's likely to be needed or worth any risks.

Part of the user interface design is affected by the quality of the page layout. For example, a designer may consider whether the site's page layout should remain consistent on different pages when designing the layout. Page pixel width may also be considered vital for aligning objects in the layout design. The most popular fixed-width websites generally have the same set width to match the current most popular browser window, at the current most popular screen resolution, on the current most popular monitor size. Most pages are also center-aligned for concerns of aesthetics on larger screens.[11]

Fluid layouts increased in popularity around 2000 as an alternative to HTML-table-based layouts and grid-based design in both page layout design principle and in coding technique, but were very slow to be adopted.[note 1] This was due to considerations of screen reading devices and varying windows sizes which designers have no control over. Accordingly, a design may be broken down into units (sidebars, content blocks, embedded advertising areas, navigation areas) that are sent to the browser and which will be fitted into the display window by the browser, as best it can. As the browser does recognize the details of the reader's screen (window size, font size relative to window etc.) the browser can make user-specific layout adjustments to fluid layouts, but not fixed-width layouts. Although such a display may often change the relative position of major content units, sidebars may be displaced below body text rather than to the side of it. This is a more flexible display than a hard-coded grid-based layout that doesn't fit the device window. In particular, the relative position of content blocks may change while leaving the content within the block unaffected. This also minimizes the user's need to horizontally scroll the page.

Responsive Web Design is a newer approach, based on CSS3, and a deeper level of per-device specification within the page's stylesheet through an enhanced use of the CSS @media rule.

Web designers may choose to limit the variety of website typefaces to only a few which are of a similar style, instead of using a wide range of typefaces or type styles. Most browsers recognize a specific number of safe fonts, which designers mainly use in order to avoid complications.

Font downloading was later included in the CSS3 fonts module and has since been implemented in Safari 3.1, Opera 10 and Mozilla Firefox 3.5. This has subsequently increased interest in web typography, as well as the usage of font downloading.

Most site layouts incorporate negative space to break the text up into paragraphs and also avoid center-aligned text.[12]

The page layout and user interface may also be affected by the use of motion graphics. The choice of whether or not to use motion graphics may depend on the target market for the website. Motion graphics may be expected or at least better received with an entertainment-oriented website. However, a website target audience with a more serious or formal interest (such as business, community, or government) might find animations unnecessary and distracting if only for entertainment or decoration purposes. This doesn't mean that more serious content couldn't be enhanced with animated or video presentations that is relevant to the content. In either case, motion graphic design may make the difference between more effective visuals or distracting visuals.

Motion graphics that are not initiated by the site visitor can produce accessibility issues. The World Wide Web consortium accessibility standards require that site visitors be able to disable the animations.[13]

Website designers may consider it to be good practice to conform to standards. This is usually done via a description specifying what the element is doing. Failure to conform to standards may not make a website unusable or error prone, but standards can relate to the correct layout of pages for readability as well making sure coded elements are closed appropriately. This includes errors in code, more organized layout for code, and making sure IDs and classes are identified properly. Poorly-coded pages are sometimes colloquially called tag soup. Validating via W3C[7] can only be done when a correct DOCTYPE declaration is made, which is used to highlight errors in code. The system identifies the errors and areas that do not conform to web design standards. This information can then be corrected by the user.[14]

There are two ways websites are generated: statically or dynamically.

A static website stores a unique file for every page of a static website. Each time that page is requested, the same content is returned. This content is created once, during the design of the website. It is usually manually authored, although some sites use an automated creation process, similar to a dynamic website, whose results are stored long-term as completed pages. These automatically-created static sites became more popular around 2015, with generators such as Jekyll and Adobe Muse.[15]

The benefits of a static website are that they were simpler to host, as their server only needed to serve static content, not execute server-side scripts. This required less server administration and had less chance of exposing security holes. They could also serve pages more quickly, on low-cost server hardware. These advantage became less important as cheap web hosting expanded to also offer dynamic features, and virtual servers offered high performance for short intervals at low cost.

Almost all websites have some static content, as supporting assets such as images and stylesheets are usually static, even on a website with highly dynamic pages.

Main article: Dynamic web page

Dynamic websites are generated on the fly and use server-side technology to generate webpages. They typically extract their content from one or more back-end databases: some are database queries across a relational database to query a catalogue or to summarise numeric information, others may use a document database such as MongoDB or NoSQL to store larger units of content, such as blog posts or wiki articles.

In the design process, dynamic pages are often mocked-up or wireframed using static pages. The skillset needed to develop dynamic web pages is much broader than for a static pages, involving server-side and database coding as well as client-side interface design. Even medium-sized dynamic projects are thus almost always a team effort.

When dynamic web pages first developed, they were typically coded directly in languages such as Perl, PHP or ASP. Some of these, notably PHP and ASP, used a 'template' approach where a server-side page resembled the structure of the completed client-side page and data was inserted into places defined by 'tags'. This was a quicker means of development than coding in a purely procedural coding language such as Perl.

Both of these approaches have now been supplanted for many websites by higher-level application-focused tools such as content management systems. These build on top of general purpose coding platforms and assume that a website exists to offer content according to one of several well recognised models, such as a time-sequenced blog, a thematic magazine or news site, a wiki or a user forum. These tools make the implementation of such a site very easy, and a purely organisational and design-based task, without requiring any coding.

Usability experts, including Jakob Nielsen and Kyle Soucy, have often emphasised homepage design for website success and asserted that the homepage is the most important page on a website.[16][17][18][19] However practitioners into the 2000s were starting to find that a growing number of website traffic was bypassing the homepage, going directly to internal content pages through search engines, e-newsletters and RSS feeds.[20] Leading many practitioners to argue that homepages are less important than most people think.[21][22][23][24] Jared Spool argued in 2007 that a site's homepage was actually the least important page on a website.[25]

In 2012 and 2013, carousels (also called 'sliders' and 'rotating banners') have become an extremely popular design element on homepages, often used to showcase featured or recent content in a confined space.[26][27] Many practitioners argue that carousels are an ineffective design element and hurt a website's search engine optimisation and usability.[27][28][29]

There are two primary jobs involved in creating a website: the web designer and web developer, who often work closely together on a website.[30] The web designers are responsible for the visual aspect, which includes the layout, coloring and typography of a web page. Web designers will also have a working knowledge of markup languages such as HTML and CSS, although the extent of their knowledge will differ from one web designer to another. Particularly in smaller organizations one person will need the necessary skills for designing and programming the full web page, while larger organizations may have a web designer responsible for the visual aspect alone.[31]

Further jobs which may become involved in the creation of a website include:

^ a b Lester, Georgina. "Different jobs and responsibilities of various people involved in creating a website". Arts Wales UK. Retrieved 2012-03-17.
^ "Longer Biography". Retrieved 2012-03-16.
^ "Mosaic Browser" (PDF). Retrieved 2012-03-16.
^ Zwicky, E.D, Cooper, S and Chapman, D,B. (2000). Building Internet Firewalls. United States: O’Reily & Associates. p. 804. ISBN 1-56592-871-7. CS1 maint: Uses authors parameter (link)
^ a b c d e Niederst, Jennifer (2006). Web Design In a Nutshell. United States of America: O'Reilly Media. pp. 12–14. ISBN 0-596-00987-9.
^ a b Chapman, Cameron, The Evolution of Web Design, Six Revisions, archived from the original on 30 October 2013
^ a b "W3C Markup Validation Service".
^ W3C. "Web Accessibility Initiative (WAI)".
^ THORLACIUS, LISBETH (2007). "The Role of Aesthetics in Web Design". Nordicom Review (28): 63–76. Retrieved 2014-07-18.
^ Castañeda, J.A Francisco; Muñoz-Leiva, Teodoro Luque (2007). "Web Acceptance Model (WAM): Moderating effects of user experience". Information & Management. 44: 384–396. doi:10.1016/j.im.2007.02.003.
^ Iteracy. "Web page size and layout". Retrieved 2012-03-19.
^ Stone, John (2009-11-16). "20 Do’s and Don’ts of Effective Web Typography". Retrieved 2012-03-19.
^ World Wide Web Consortium: Understanding Web Content Accessibility Guidelines 2.2.2: Pause, Stop, Hide
^ W3C QA. "My Web site is standard! And yours?". Retrieved 2012-03-21.
^ Christensen, Mathias Biilmann (2015-11-16). "Static Website Generators Reviewed: Jekyll, Middleman, Roots, Hugo". Smashing Magazine. Retrieved 2016-10-26.
^ Soucy, Kyle, Is Your Homepage Doing What It Should?, Usable Interface, archived from the original on 8 June 2012
^ Nielsen & Tahir 2001.
^ Nielsen, Jakob (10 November 2003), The Ten Most Violated Homepage Design Guidelines, Nielsen Norman Group, archived from the original on 5 October 2013
^ Knight, Kayla (20 August 2009), Essential Tips for Designing an Effective Homepage, Six Revisions, archived from the original on 21 August 2013
^ Spool, Jared (29 September 2005), Is Home Page Design Relevant Anymore?, User Interface Engineering, archived from the original on 16 September 2013
^ Chapman, Cameron (15 September 2010), 10 Usability Tips Based on Research Studies, Six Revisions, archived from the original on 2 September 2013
^ Gócza, Zoltán, Myth #17: The homepage is your most important page, archived from the original on 2 June 2013
^ McGovern, Gerry (18 April 2010), The decline of the homepage, archived from the original on 24 May 2013
^ Porter, Joshua (24 April 2006), Prioritizing Design Time: A Long Tail Approach, User Interface Engineering, archived from the original on 14 May 2013
^ Spool, Jared (6 August 2007), Usability Tools Podcast: Home Page Design, archived from the original on 29 April 2013
^ Bates, Chris (9 October 2012), Best practices in carousel design for effective web marketing, Smart Insights, archived from the original on 3 April 2013
^ a b Messner, Katie (22 April 2013), Image Carousels: Getting Control of the Merry-Go-Round, Usability.gov, archived from the original on 10 October 2013
^ Jones, Harrison (19 June 2013), Homepage Sliders: Bad For SEO, Bad For Usability, archived from the original on 22 November 2013
^ Laja, Peep (27 September 2012), Don’t Use Automatic Image Sliders or Carousels, Ignore the Fad, ConversionXL, archived from the original on 25 November 2013
^ Oleksy, Walter (2001). Careers in Web Design. New York: The Rosen Publishing Group,Inc. pp. 9–11. ISBN 9780823931910.
^ "Web Designer". Retrieved 2012-03-19.

1: WEB DESIGN + DEVELOPMENT: Most musicians websites don't provide a compelling experience for fans or prospects who visit their site. Don't see your site as a static platform. Your site is a channel -here, you interact and present yourself to all those who are not fans yet. It must develop at least every month. Continued commitment to developing website design and content that more effectively express your brand as well as deepen your fans experience, so that they are confident and invested enough to make purchases...then sales happen. Industry people who provide opportunities are a whole separate group from your fan base and also have to be addressed directly through your website as the primary point of formal introduction to your brand, and a platform from which to broker propositions.

2: EMAIL MANAGEMENT: Maintaining fan engagement and interaction with email marketing management is still one the most dependable ways to create recurring revenue online, managing fans in such a way to optimize engagement that leads to sales over time through ongoing offers. Successful music marketing requires professional email management for musicians. Those who are interested in email marketing should know you will have to build your contacts with other online marketing efforts, most often a blog, or appc campaign to get sign ups. Then you must maintain your mail out, which is going to need regular content with which to present new propositions but once you can graduate to greater levels of automated email marketing, you can implement powerful systems to create wealth with minimum maintenance.

3: PPC MANAGEMENT / ADWORDS: AdWords Pay per click advertising through Google and other content networks is the quickest and most powerfully qualified option for advertising spending in 2009. With only as little as $20 p/week you can begin highly measured and finely targeted campaigns through AdWords. Google PPC is great for any entertainers or content providers who have put in the preparation of building an online platform that retains fan engagement and is also effective targeting specific genders, age groups and cities/regions for products or events and gigs. Even beginners can do well on Google through AdWords, but there are many typical mistakes made by those who fail to comprehend the complexity of how the system is balanced. Experience in using the PPC can lead to radically improved outcomes, minimizing AdWords costs.

9: Viral Marketing: More powerful than spreading ideas is building an idea that spreads itself. Whether a clever video or other online content, or proposition - a competition or a mash up - or even a piece of software or app, the possibilities are limitless. The essential concept is an idea or meme that proliferates through online sharing -without any secondary involvement from the musician or their marketing team. The success of Viral Marketing is never promised and taking risks to put forward powerful branding messages or leverage powerful value propositions that engage so deeply that it spreads online or through word of mouth is a long shot but always has the potential to be outrageously successful with a bit of character and flair.

10: Community building: Again building a forum or community for your fans to amass around your brand takes long term commitment and a large personal contribution to keep the buzz of the community alive - this can be a successful strategy if executed well, but must be timed well in an musicians career. But you can't just create a strong forum based loyalty to an artist overnight. Certainly, strategies to nurture your community and provide functionality by way of a forum or other platforms that encourage different kinds of interaction and user driven content creation around your brand can be provided easily and inexpensively and provide great leverage, but early on there will need to be a dedicated effort to inject activity into the community space. This can be very time consuming and long term than many musicians are prepared for.

Web design encompasses many different skills and disciplines in the production and maintenance of websites. The different areas of web design include web graphic design; interface design; authoring, including standardised code and proprietary software; user experience design; and search engine optimization. Often many individuals will work in teams covering different aspects of the design process, although some designers will cover them all.[1] The term web design is normally used to describe the design process relating to the front-end (client side) design of a website including writing mark up. Web design partially overlaps web engineering in the broader scope of web development. Web designers are expected to have an awareness of usability and if their role involves creating mark up then they are also expected to be up to date with web accessibility guidelines. Web design books in a store Although web design has a fairly recent history, it can be linked to other areas such as graphic design. However, web design can also be seen from a technological standpoint. It has become a large part of people’s everyday lives. It is hard to imagine the Internet without animated graphics, different styles of typography, background, and music. In 1989, whilst working at CERN Tim Berners-Lee proposed to create a global hypertext project, which later became known as the World Wide Web. During 1991 to 1993 the World Wide Web was born. Text-only pages could be viewed using a simple line-mode browser.[2] In 1993 Marc Andreessen and Eric Bina, created the Mosaic browser. At the time there were multiple browsers, however the majority of them were Unix-based and naturally text heavy. There had been no integrated approach to graphic design elements such as images or sounds. The Mosaic browser broke this mould.[3] The W3C was created in October 1994 to "lead the World Wide Web to its full potential by developing common protocols that promote its evolution and ensure its interoperability."[4] This discouraged any one company from monopolizing a propriety browser and programming language, which could have altered the effect of the World Wide Web as a whole. The W3C continues to set standards, which can today be seen with JavaScript. In 1994 Andreessen formed Communications Corp. that later became known as Netscape Communications, the Netscape 0.9 browser. Netscape created its own HTML tags without regard to the traditional standards process. For example, Netscape 1.1 included tags for changing background colours and formatting text with tables on web pages. Throughout 1996 to 1999 the browser wars began, as Microsoft and Netscape fought for ultimate browser dominance. During this time there were many new technologies in the field, notably Cascading Style Sheets, JavaScript, and Dynamic HTML. On the whole, the browser competition did lead to many positive creations and helped web design evolve at a rapid pace.[5] In 1996, Microsoft released its first competitive browser, which was complete with its own features and tags. It was also the first browser to support style sheets, which at the time was seen as an obscure authoring technique.[5] The HTML markup for tables was originally intended for displaying tabular data. However designers quickly realized the potential of using HTML tables for creating the complex, multi-column layouts that were otherwise not possible. At this time, as design and good aesthetics seemed to take precedence over good mark-up structure, and little attention was paid to semantics and web accessibility. HTML sites were limited in their design options, even more so with earlier versions of HTML. To create complex designs, many web designers had to use complicated table structures or even use blank spacer .GIF images to stop empty table cells from collapsing.[6] CSS was introduced in December 1996 by the W3C to support presentation and layout. This allowed HTML code to be semantic rather than both semantic and presentational, and improved web accessibility, see tableless web design. In 1996, Flash (originally known as FutureSplash) was developed. At the time, the Flash content development tool was relatively simple compared to now, using basic layout and drawing tools, a limited precursor to ActionScript, and a timeline, but it enabled web designers to go beyond the point of HTML, animated GIFs and JavaScript. However, because Flash required a plug-in, many web developers avoided using it for fear of limiting their market share due to lack of compatibility. Instead, designers reverted to gif animations (if they didn't forego using motion graphics altogether) and JavaScript for widgets. But the benefits of Flash made it popular enough among specific target markets to eventually work its way to the vast majority of browsers, and powerful enough to be used to develop entire sites.[6] During 1998 Netscape released Netscape Communicator code under an open source licence, enabling thousands of developers to participate in improving the software. However, they decided to start from the beginning, which guided the development of the open source browser and soon expanded to a complete application platform.[5] The Web Standards Project was formed and promoted browser compliance with HTML and CSS standards by creating Acid1, Acid2, and Acid3 tests. 2000 was a big year for Microsoft. Internet Explorer was released for Mac; this was significant as it was the first browser that fully supported HTML 4.01 and CSS 1, raising the bar in terms of standards compliance. It was also the first browser to fully support the PNG image format.[5] During this time Netscape was sold to AOL and this was seen as Netscape’s official loss to Microsoft in the browser wars.[5] Since the start of the 21st century the web has become more and more integrated into peoples lives. As this has happened the technology of the web has also moved on. There have also been significant changes in the way people use and access the web, and this has changed how sites are designed. Since the end of the browsers wars new browsers have been released. Many of these are open source meaning that they tend to have faster development and are more supportive of new standards. The new options are considered by many[weasel words] to be better than Microsoft's Internet Explorer. The W3C has released new standards for HTML (HTML5) and CSS (CSS3), as well as new JavaScript API's, each as a new but individual standard.[when?] While the term HTML5 is only used to refer to the new version of HTML and some of the JavaScript API's, it has become common to use it to refer to the entire suite of new standards (HTML5, CSS3 and JavaScript). Web designers use a variety of different tools depending on what part of the production process they are involved in. These tools are updated over time by newer standards and software but the principles behind them remain the same. Web designers use both vector and raster graphics editors to create web-formatted imagery or design prototypes. Technologies used to create websites include W3C standards like HTML and CSS, which can be hand-coded or generated by WYSIWYG editing software. Other tools web designers might use include mark up validators[7] and other testing tools for usability and accessibility to ensure their websites meet web accessibility guidelines.[8] Marketing and communication design on a website may identify what works for its target market. This can be an age group or particular strand of culture; thus the designer may understand the trends of its audience. Designers may also understand the type of website they are designing, meaning, for example, that (B2B) business-to-business website design considerations might differ greatly from a consumer targeted website such as a retail or entertainment website. Careful consideration might be made to ensure that the aesthetics or overall design of a site do not clash with the clarity and accuracy of the content or the ease of web navigation,[9] especially on a B2B website. Designers may also consider the reputation of the owner or business the site is representing to make sure they are portrayed favourably. User understanding of the content of a website often depends on user understanding of how the website works. This is part of the user experience design. User experience is related to layout, clear instructions and labeling on a website. How well a user understands how they can interact on a site may also depend on the interactive design of the site. If a user perceives the usefulness of the website, they are more likely to continue using it. Users who are skilled and well versed with website use may find a more distinctive, yet less intuitive or less user-friendly website interface useful nonetheless. However, users with less experience are less likely to see the advantages or usefulness of a less intuitive website interface. This drives the trend for a more universal user experience and ease of access to accommodate as many users as possible regardless of user skill.[10] Much of the user experience design and interactive design are considered in the user interface design. Advanced interactive functions may require plug-ins if not advanced coding language skills. Choosing whether or not to use interactivity that requires plug-ins is a critical decision in user experience design. If the plug-in doesn't come pre-installed with most browsers, there's a risk that the user will have neither the know how or the patience to install a plug-in just to access the content. If the function requires advanced coding language skills, it may be too costly in either time or money to code compared to the amount of enhancement the function will add to the user experience. There's also a risk that advanced interactivity may be incompatible with older browsers or hardware configurations. Publishing a function that doesn't work reliably is potentially worse for the user experience than making no attempt. It depends on the target audience if it's likely to be needed or worth any risks. Part of the user interface design is affected by the quality of the page layout. For example, a designer may consider whether the site's page layout should remain consistent on different pages when designing the layout. Page pixel width may also be considered vital for aligning objects in the layout design. The most popular fixed-width websites generally have the same set width to match the current most popular browser window, at the current most popular screen resolution, on the current most popular monitor size. Most pages are also center-aligned for concerns of aesthetics on larger screens.[11] Fluid layouts increased in popularity around 2000 as an alternative to HTML-table-based layouts and grid-based design in both page layout design principle and in coding technique, but were very slow to be adopted.[note 1] This was due to considerations of screen reading devices and varying windows sizes which designers have no control over. Accordingly, a design may be broken down into units (sidebars, content blocks, embedded advertising areas, navigation areas) that are sent to the browser and which will be fitted into the display window by the browser, as best it can. As the browser does recognize the details of the reader's screen (window size, font size relative to window etc.) the browser can make user-specific layout adjustments to fluid layouts, but not fixed-width layouts. Although such a display may often change the relative position of major content units, sidebars may be displaced below body text rather than to the side of it. This is a more flexible display than a hard-coded grid-based layout that doesn't fit the device window. In particular, the relative position of content blocks may change while leaving the content within the block unaffected. This also minimizes the user's need to horizontally scroll the page. Responsive Web Design is a newer approach, based on CSS3, and a deeper level of per-device specification within the page's stylesheet through an enhanced use of the CSS @media rule. Web designers may choose to limit the variety of website typefaces to only a few which are of a similar style, instead of using a wide range of typefaces or type styles. Most browsers recognize a specific number of safe fonts, which designers mainly use in order to avoid complications. Font downloading was later included in the CSS3 fonts module and has since been implemented in Safari 3.1, Opera 10 and Mozilla Firefox 3.5. This has subsequently increased interest in web typography, as well as the usage of font downloading. Most site layouts incorporate negative space to break the text up into paragraphs and also avoid center-aligned text.[12] The page layout and user interface may also be affected by the use of motion graphics. The choice of whether or not to use motion graphics may depend on the target market for the website. Motion graphics may be expected or at least better received with an entertainment-oriented website. However, a website target audience with a more serious or formal interest (such as business, community, or government) might find animations unnecessary and distracting if only for entertainment or decoration purposes. This doesn't mean that more serious content couldn't be enhanced with animated or video presentations that is relevant to the content. In either case, motion graphic design may make the difference between more effective visuals or distracting visuals. Motion graphics that are not initiated by the site visitor can produce accessibility issues. The World Wide Web consortium accessibility standards require that site visitors be able to disable the animations.[13] Website designers may consider it to be good practice to conform to standards. This is usually done via a description specifying what the element is doing. Failure to conform to standards may not make a website unusable or error prone, but standards can relate to the correct layout of pages for readability as well making sure coded elements are closed appropriately. This includes errors in code, more organized layout for code, and making sure IDs and classes are identified properly. Poorly-coded pages are sometimes colloquially called tag soup. Validating via W3C[7] can only be done when a correct DOCTYPE declaration is made, which is used to highlight errors in code. The system identifies the errors and areas that do not conform to web design standards. This information can then be corrected by the user.[14] There are two ways websites are generated: statically or dynamically. A static website stores a unique file for every page of a static website. Each time that page is requested, the same content is returned. This content is created once, during the design of the website. It is usually manually authored, although some sites use an automated creation process, similar to a dynamic website, whose results are stored long-term as completed pages. These automatically-created static sites became more popular around 2015, with generators such as Jekyll and Adobe Muse.[15] The benefits of a static website are that they were simpler to host, as their server only needed to serve static content, not execute server-side scripts. This required less server administration and had less chance of exposing security holes. They could also serve pages more quickly, on low-cost server hardware. These advantage became less important as cheap web hosting expanded to also offer dynamic features, and virtual servers offered high performance for short intervals at low cost. Almost all websites have some static content, as supporting assets such as images and stylesheets are usually static, even on a website with highly dynamic pages. Main article: Dynamic web page Dynamic websites are generated on the fly and use server-side technology to generate webpages. They typically extract their content from one or more back-end databases: some are database queries across a relational database to query a catalogue or to summarise numeric information, others may use a document database such as MongoDB or NoSQL to store larger units of content, such as blog posts or wiki articles. In the design process, dynamic pages are often mocked-up or wireframed using static pages. The skillset needed to develop dynamic web pages is much broader than for a static pages, involving server-side and database coding as well as client-side interface design. Even medium-sized dynamic projects are thus almost always a team effort. When dynamic web pages first developed, they were typically coded directly in languages such as Perl, PHP or ASP. Some of these, notably PHP and ASP, used a 'template' approach where a server-side page resembled the structure of the completed client-side page and data was inserted into places defined by 'tags'. This was a quicker means of development than coding in a purely procedural coding language such as Perl. Both of these approaches have now been supplanted for many websites by higher-level application-focused tools such as content management systems. These build on top of general purpose coding platforms and assume that a website exists to offer content according to one of several well recognised models, such as a time-sequenced blog, a thematic magazine or news site, a wiki or a user forum. These tools make the implementation of such a site very easy, and a purely organisational and design-based task, without requiring any coding. Usability experts, including Jakob Nielsen and Kyle Soucy, have often emphasised homepage design for website success and asserted that the homepage is the most important page on a website.[16][17][18][19] However practitioners into the 2000s were starting to find that a growing number of website traffic was bypassing the homepage, going directly to internal content pages through search engines, e-newsletters and RSS feeds.[20] Leading many practitioners to argue that homepages are less important than most people think.[21][22][23][24] Jared Spool argued in 2007 that a site's homepage was actually the least important page on a website.[25] In 2012 and 2013, carousels (also called 'sliders' and 'rotating banners') have become an extremely popular design element on homepages, often used to showcase featured or recent content in a confined space.[26][27] Many practitioners argue that carousels are an ineffective design element and hurt a website's search engine optimisation and usability.[27][28][29] There are two primary jobs involved in creating a website: the web designer and web developer, who often work closely together on a website.[30] The web designers are responsible for the visual aspect, which includes the layout, coloring and typography of a web page. Web designers will also have a working knowledge of markup languages such as HTML and CSS, although the extent of their knowledge will differ from one web designer to another. Particularly in smaller organizations one person will need the necessary skills for designing and programming the full web page, while larger organizations may have a web designer responsible for the visual aspect alone.[31] Further jobs which may become involved in the creation of a website include: ^ a b Lester, Georgina. "Different jobs and responsibilities of various people involved in creating a website". Arts Wales UK. Retrieved 2012-03-17. ^ "Longer Biography". Retrieved 2012-03-16. ^ "Mosaic Browser" (PDF). Retrieved 2012-03-16. ^ Zwicky, E.D, Cooper, S and Chapman, D,B. (2000). Building Internet Firewalls. United States: O’Reily & Associates. p. 804. ISBN 1-56592-871-7. CS1 maint: Uses authors parameter (link) ^ a b c d e Niederst, Jennifer (2006). Web Design In a Nutshell. United States of America: O'Reilly Media. pp. 12–14. ISBN 0-596-00987-9. ^ a b Chapman, Cameron, The Evolution of Web Design, Six Revisions, archived from the original on 30 October 2013 ^ a b "W3C Markup Validation Service". ^ W3C. "Web Accessibility Initiative (WAI)". ^ THORLACIUS, LISBETH (2007). "The Role of Aesthetics in Web Design". Nordicom Review (28): 63–76. Retrieved 2014-07-18. ^ Castañeda, J.A Francisco; Muñoz-Leiva, Teodoro Luque (2007). "Web Acceptance Model (WAM): Moderating effects of user experience". Information & Management. 44: 384–396. doi:10.1016/j.im.2007.02.003. ^ Iteracy. "Web page size and layout". Retrieved 2012-03-19. ^ Stone, John (2009-11-16). "20 Do’s and Don’ts of Effective Web Typography". Retrieved 2012-03-19. ^ World Wide Web Consortium: Understanding Web Content Accessibility Guidelines 2.2.2: Pause, Stop, Hide ^ W3C QA. "My Web site is standard! And yours?". Retrieved 2012-03-21. ^ Christensen, Mathias Biilmann (2015-11-16). "Static Website Generators Reviewed: Jekyll, Middleman, Roots, Hugo". Smashing Magazine. 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