Peer review is the evaluation of work by one or more people with similar competences as the producers of the work. It functions as a form of self-regulation by qualified members of a profession within the relevant field. Peer review methods are used to maintain quality standards, improve performance, provide credibility. In academia, scholarly peer review is used to determine an academic paper's suitability for publication. Peer review can be categorized by the type of activity and by the field or profession in which the activity occurs, e.g. medical peer review. Professional peer review focuses on the performance of professionals, with a view to improving quality, upholding standards, or providing certification. In academia, peer review is used to inform in decisions related to faculty tenure. Henry Oldenburg was a British philosopher, seen as the'father' of modern scientific peer review. WA prototype is a professional peer-review process recommended in the Ethics of the Physician written by Ishāq ibn ʻAlī al-Ruhāwī.
He stated that a visiting physician had to make duplicate notes of a patient's condition on every visit. When the patient was cured or had died, the notes of the physician were examined by a local medical council of other physicians, who would decide whether the treatment had met the required standards of medical care. Professional peer review is common in the field of health care, where it is called clinical peer review. Further, since peer review activity is segmented by clinical discipline, there is physician peer review, nursing peer review, dentistry peer review, etc. Many other professional fields have some level of peer review process: accounting, engineering and forest fire management. Peer review is used in education to achieve certain learning objectives as a tool to reach higher order processes in the affective and cognitive domains as defined by Bloom's taxonomy; this may take a variety of forms, including mimicking the scholarly peer review processes used in science and medicine.
Scholarly peer review is the process of subjecting an author's scholarly work, research, or ideas to the scrutiny of others who are experts in the same field, before a paper describing this work is published in a journal, conference proceedings or as a book. The peer review helps the publisher decide whether the work should be accepted, considered acceptable with revisions, or rejected. Peer review requires a community of experts in a given field, who are qualified and able to perform reasonably impartial review. Impartial review of work in less narrowly defined or inter-disciplinary fields, may be difficult to accomplish, the significance of an idea may never be appreciated among its contemporaries. Peer review is considered necessary to academic quality and is used in most major scholarly journals, but it by no means prevents publication of invalid research. Traditionally, peer reviewers have been anonymous, but there is a significant amount of open peer review, where the comments are visible to readers with the identities of the peer reviewers disclosed as well.
The European Union has been using peer review in the "Open Method of Co-ordination" of policies in the fields of active labour market policy since 1999. In 2004, a program of peer reviews started in social inclusion; each program sponsors about eight peer review meetings in each year, in which a "host country" lays a given policy or initiative open to examination by half a dozen other countries and the relevant European-level NGOs. These meet over two days and include visits to local sites where the policy can be seen in operation; the meeting is preceded by the compilation of an expert report on which participating "peer countries" submit comments. The results are published on the web; the United Nations Economic Commission for Europe, through UNECE Environmental Performance Reviews, uses peer review, referred to as "peer learning", to evaluate progress made by its member countries in improving their environmental policies. The State of California is the only U. S. state to mandate scientific peer review.
In 1997, the Governor of California signed into law Senate Bill 1320, Chapter 295, statutes of 1997, which mandates that, before any CalEPA Board, Department, or Office adopts a final version of a rule-making, the scientific findings and assumptions on which the proposed rule are based must be submitted for independent external scientific peer review. This requirement is incorporated into the California Health and Safety Code Section 57004. Medical peer review may be distinguished in 4 classifications: 1) clinical peer review. Additionally, "medical peer review" has been used by the American Medical Association to refer not only to the process of improving quality and safety in health care organizations, but to the process of rating clinical behavior or compliance with professional society membership standards. Thus, the terminology has poor standardization and specificity as a database search term. To an outsider, the anonymous, pre-publication peer review process is opaque. Certain journals are accused of not carrying out stringent peer review in order to more expand their customer base in journals where authors pay a fee before public
Anthropology is the scientific study of humans and human behavior and societies in the past and present. Social anthropology and cultural anthropology study the values of societies. Linguistic anthropology studies. Biological or physical anthropology studies the biological development of humans. Archaeology, which studies past human cultures through investigation of physical evidence, is thought of as a branch of anthropology in the United States and Canada, while in Europe, it is viewed as a discipline in its own right or grouped under other related disciplines, such as history; the abstract noun anthropology is first attested in reference to history. Its present use first appeared in Renaissance Germany in the works of Otto Casmann, their New Latin anthropologia derived from the combining forms of the Greek words ánthrōpos and lógos. It began to be used in English via French Anthropologie, by the early 18th century. In 1647, the Bartholins, founders of the University of Copenhagen, defined l'anthropologie as follows: Anthropology, to say the science that treats of man, is divided ordinarily and with reason into Anatomy, which considers the body and the parts, Psychology, which speaks of the soul.
Sporadic use of the term for some of the subject matter occurred subsequently, such as the use by Étienne Serres in 1839 to describe the natural history, or paleontology, of man, based on comparative anatomy, the creation of a chair in anthropology and ethnography in 1850 at the National Museum of Natural History by Jean Louis Armand de Quatrefages de Bréau. Various short-lived organizations of anthropologists had been formed; the Société Ethnologique de Paris, the first to use Ethnology, was formed in 1839. Its members were anti-slavery activists; when slavery was abolished in France in 1848 the Société was abandoned. Meanwhile, the Ethnological Society of New York the American Ethnological Society, was founded on its model in 1842, as well as the Ethnological Society of London in 1843, a break-away group of the Aborigines' Protection Society; these anthropologists of the times were liberal, anti-slavery, pro-human-rights activists. They maintained international connections. Anthropology and many other current fields are the intellectual results of the comparative methods developed in the earlier 19th century.
Theorists in such diverse fields as anatomy and Ethnology, making feature-by-feature comparisons of their subject matters, were beginning to suspect that similarities between animals and folkways were the result of processes or laws unknown to them then. For them, the publication of Charles Darwin's On the Origin of Species was the epiphany of everything they had begun to suspect. Darwin himself arrived at his conclusions through comparison of species he had seen in agronomy and in the wild. Darwin and Wallace unveiled evolution in the late 1850s. There was an immediate rush to bring it into the social sciences. Paul Broca in Paris was in the process of breaking away from the Société de biologie to form the first of the explicitly anthropological societies, the Société d'Anthropologie de Paris, meeting for the first time in Paris in 1859; when he read Darwin, he became an immediate convert to Transformisme, as the French called evolutionism. His definition now became "the study of the human group, considered as a whole, in its details, in relation to the rest of nature".
Broca, being what today would be called a neurosurgeon, had taken an interest in the pathology of speech. He wanted to localize the difference between man and the other animals, which appeared to reside in speech, he discovered the speech center of the human brain, today called Broca's area after him. His interest was in Biological anthropology, but a German philosopher specializing in psychology, Theodor Waitz, took up the theme of general and social anthropology in his six-volume work, entitled Die Anthropologie der Naturvölker, 1859–1864; the title was soon translated as "The Anthropology of Primitive Peoples". The last two volumes were published posthumously. Waitz defined anthropology as "the science of the nature of man". By nature he meant matter animated by "the Divine breath". Following Broca's lead, Waitz points out that anthropology is a new field, which would gather material from other fields, but would differ from them in the use of comparative anatomy and psychology to differentiate man from "the animals nearest to him".
He stresses. The history of civilization, as well as ethnology, are to be brought into the comparison, it is to be presumed fundamentally that the species, man, is a unity, that "the same laws of thought are applicable to all men". Waitz was influential among the British ethnologists. In 1863 the explorer Richard Francis Burton and the speech therapist James Hunt broke away from the Ethnological Society of London to form the Anthropological Society of London, which henceforward would follow the path of the new anthropology rather than just ethnology, it was the 2nd society dedicated to general anthropology in existence. Representatives from the French Société were present. In his keynote address, printed in the first volume of its new publication, The Anthropological Review, Hunt stressed the work of Waitz, adopting his definitions as a standard. Among the first associates were the young Edward Burnett Tylor, inventor of cultural anthropology, his brother Alfred Tylor, a geologist. Edward had referred to himself as an ethnologist.
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Social science is a category of academic disciplines, concerned with society and the relationships among individuals within a society. Social science as a whole has many branches; these social sciences include, but are not limited to: anthropology, communication studies, history, human geography, linguistics, political science, public health, sociology. The term is sometimes used to refer to the field of sociology, the original "science of society", established in the 19th century. For a more detailed list of sub-disciplines within the social sciences see: Outline of social science. Positivist social scientists use methods resembling those of the natural sciences as tools for understanding society, so define science in its stricter modern sense. Interpretivist social scientists, by contrast, may use social critique or symbolic interpretation rather than constructing empirically falsifiable theories, thus treat science in its broader sense. In modern academic practice, researchers are eclectic, using multiple methodologies.
The term "social research" has acquired a degree of autonomy as practitioners from various disciplines share in its aims and methods. The history of the social sciences begins in the Age of Enlightenment after 1650, which saw a revolution within natural philosophy, changing the basic framework by which individuals understood what was "scientific". Social sciences came forth from the moral philosophy of the time and were influenced by the Age of Revolutions, such as the Industrial Revolution and the French Revolution; the social sciences developed from the sciences, or the systematic knowledge-bases or prescriptive practices, relating to the social improvement of a group of interacting entities. The beginnings of the social sciences in the 18th century are reflected in the grand encyclopedia of Diderot, with articles from Jean-Jacques Rousseau and other pioneers; the growth of the social sciences is reflected in other specialized encyclopedias. The modern period saw "social science" first used as a distinct conceptual field.
Social science was influenced by positivism, focusing on knowledge based on actual positive sense experience and avoiding the negative. Auguste Comte used the term "science sociale" to describe the field, taken from the ideas of Charles Fourier. Following this period, there were five paths of development that sprang forth in the social sciences, influenced by Comte on other fields. One route, taken was the rise of social research. Large statistical surveys were undertaken in various parts of the United States and Europe. Another route undertaken was initiated by Émile Durkheim, studying "social facts", Vilfredo Pareto, opening metatheoretical ideas and individual theories. A third means developed, arising from the methodological dichotomy present, in which social phenomena were identified with and understood; the fourth route taken, based in economics, was developed and furthered economic knowledge as a hard science. The last path was the correlation of knowledge and social values. In this route and prescription were non-overlapping formal discussions of a subject.
Around the start of the 20th century, Enlightenment philosophy was challenged in various quarters. After the use of classical theories since the end of the scientific revolution, various fields substituted mathematics studies for experimental studies and examining equations to build a theoretical structure; the development of social science subfields became quantitative in methodology. The interdisciplinary and cross-disciplinary nature of scientific inquiry into human behaviour and environmental factors affecting it, made many of the natural sciences interested in some aspects of social science methodology. Examples of boundary blurring include emerging disciplines like social research of medicine, neuropsychology and the history and sociology of science. Quantitative research and qualitative methods are being integrated in the study of human action and its implications and consequences. In the first half of the 20th century, statistics became a free-standing discipline of applied mathematics.
Statistical methods were used confidently. In the contemporary period, Karl Popper and Talcott Parsons influenced the furtherance of the social sciences. Researchers continue to search for a unified consensus on what methodology might have the power and refinement to connect a proposed "grand theory" with the various midrange theories that, with considerable success, continue to provide usable frameworks for massive, growing data banks; the social sciences will for the foreseeable future be composed of different zones in the research of, sometime distinct in approach toward, the field. The term "social science" may refer either to the specific sciences of society established by thinkers such as Comte, Durkheim and Weber, or more to all disciplines outside of "noble science" and arts. By the late 19th century, the academic social sciences were constituted of five fields: jurisprudence and amendment of the law, health and trade, art. Around the start of the 21st century, the expanding domain of economics in the social sciences has been described as economic imperialism.
The social science disciplines are branches of knowledge taught and researched at the college or university level. Social science disciplines are defined and rec
A mathematical model is a description of a system using mathematical concepts and language. The process of developing a mathematical model is termed mathematical modeling. Mathematical models are used in the natural sciences and engineering disciplines, as well as in the social sciences. A model may help to explain a system and to study the effects of different components, to make predictions about behaviour. Mathematical models can take many forms, including dynamical systems, statistical models, differential equations, or game theoretic models; these and other types of models can overlap, with a given model involving a variety of abstract structures. In general, mathematical models may include logical models. In many cases, the quality of a scientific field depends on how well the mathematical models developed on the theoretical side agree with results of repeatable experiments. Lack of agreement between theoretical mathematical models and experimental measurements leads to important advances as better theories are developed.
In the physical sciences, a traditional mathematical model contains most of the following elements: Governing equations Supplementary sub-models Defining equations Constitutive equations Assumptions and constraints Initial and boundary conditions Classical constraints and kinematic equations Mathematical models are composed of relationships and variables. Relationships can be described by operators, such as algebraic operators, differential operators, etc. Variables are abstractions of system parameters of interest. Several classification criteria can be used for mathematical models according to their structure: Linear vs. nonlinear: If all the operators in a mathematical model exhibit linearity, the resulting mathematical model is defined as linear. A model is considered to be nonlinear otherwise; the definition of linearity and nonlinearity is dependent on context, linear models may have nonlinear expressions in them. For example, in a statistical linear model, it is assumed that a relationship is linear in the parameters, but it may be nonlinear in the predictor variables.
A differential equation is said to be linear if it can be written with linear differential operators, but it can still have nonlinear expressions in it. In a mathematical programming model, if the objective functions and constraints are represented by linear equations the model is regarded as a linear model. If one or more of the objective functions or constraints are represented with a nonlinear equation the model is known as a nonlinear model. Nonlinearity in simple systems, is associated with phenomena such as chaos and irreversibility. Although there are exceptions, nonlinear systems and models tend to be more difficult to study than linear ones. A common approach to nonlinear problems is linearization, but this can be problematic if one is trying to study aspects such as irreversibility, which are tied to nonlinearity. Static vs. dynamic: A dynamic model accounts for time-dependent changes in the state of the system, while a static model calculates the system in equilibrium, thus is time-invariant.
Dynamic models are represented by differential equations or difference equations. Explicit vs. implicit: If all of the input parameters of the overall model are known, the output parameters can be calculated by a finite series of computations, the model is said to be explicit. But sometimes it is the output parameters which are known, the corresponding inputs must be solved for by an iterative procedure, such as Newton's method or Broyden's method. In such a case the model is said to be implicit. For example, a jet engine's physical properties such as turbine and nozzle throat areas can be explicitly calculated given a design thermodynamic cycle at a specific flight condition and power setting, but the engine's operating cycles at other flight conditions and power settings cannot be explicitly calculated from the constant physical properties. Discrete vs. continuous: A discrete model treats objects as discrete, such as the particles in a molecular model or the states in a statistical model.
Deterministic vs. probabilistic: A deterministic model is one in which every set of variable states is uniquely determined by parameters in the model and by sets of previous states of these variables. Conversely, in a stochastic model—usually called a "statistical model"—randomness is present, variable states are not described by unique values, but rather by probability distributions. Deductive, inductive, or floating: A deductive model is a logical structure based on a theory. An inductive model arises from empirical findings and generalization from them; the floating model rests on neither theory nor observation, but is the invocation of expected structure. Application of mathematics in social sciences outside of economics has been criticized for unfounded models. Application of catastrophe theory in science has been characterized as a floating model. Mathematical models are of great importance in the natural sciences in physics. Physical theories are invariably expressed using mathematic
Architecture is both the process and the product of planning and constructing buildings or any other structures. Architectural works, in the material form of buildings, are perceived as cultural symbols and as works of art. Historical civilizations are identified with their surviving architectural achievements. Architecture is both the process and the product of planning and constructing buildings and other physical structures. Architecture can mean: A general term to describe other physical structures; the art and science of designing buildings and nonbuilding structures. The style of design and method of construction of buildings and other physical structures. A unifying or coherent form or structure. Knowledge of art, science and humanity; the design activity of the architect, from the macro-level to the micro-level. The practice of the architect, where architecture means offering or rendering professional services in connection with the design and construction of buildings, or built environments.
The earliest surviving written work on the subject of architecture is De architectura, by the Roman architect Vitruvius in the early 1st century AD. According to Vitruvius, a good building should satisfy the three principles of firmitas, venustas known by the original translation – firmness and delight. An equivalent in modern English would be: Durability – a building should stand up robustly and remain in good condition. Utility – it should be suitable for the purposes for which it is used. Beauty – it should be aesthetically pleasing. According to Vitruvius, the architect should strive to fulfill each of these three attributes as well as possible. Leon Battista Alberti, who elaborates on the ideas of Vitruvius in his treatise, De Re Aedificatoria, saw beauty as a matter of proportion, although ornament played a part. For Alberti, the rules of proportion were those that governed the idealised human figure, the Golden mean; the most important aspect of beauty was, therefore, an inherent part of an object, rather than something applied superficially, was based on universal, recognisable truths.
The notion of style in the arts was not developed until the 16th century, with the writing of Vasari: by the 18th century, his Lives of the Most Excellent Painters and Architects had been translated into Italian, French and English. In the early 19th century, Augustus Welby Northmore Pugin wrote Contrasts that, as the titled suggested, contrasted the modern, industrial world, which he disparaged, with an idealized image of neo-medieval world. Gothic architecture, Pugin believed, was the only "true Christian form of architecture." The 19th-century English art critic, John Ruskin, in his Seven Lamps of Architecture, published 1849, was much narrower in his view of what constituted architecture. Architecture was the "art which so disposes and adorns the edifices raised by men... that the sight of them" contributes "to his mental health and pleasure". For Ruskin, the aesthetic was of overriding significance, his work goes on to state that a building is not a work of architecture unless it is in some way "adorned".
For Ruskin, a well-constructed, well-proportioned, functional building needed string courses or rustication, at the least. On the difference between the ideals of architecture and mere construction, the renowned 20th-century architect Le Corbusier wrote: "You employ stone and concrete, with these materials you build houses and palaces:, construction. Ingenuity is at work, but you touch my heart, you do me good. I am happy and I say: This is beautiful; that is Architecture". Le Corbusier's contemporary Ludwig Mies van der Rohe said "Architecture starts when you put two bricks together. There it begins." The notable 19th-century architect of skyscrapers, Louis Sullivan, promoted an overriding precept to architectural design: "Form follows function". While the notion that structural and aesthetic considerations should be subject to functionality was met with both popularity and skepticism, it had the effect of introducing the concept of "function" in place of Vitruvius' "utility". "Function" came to be seen as encompassing all criteria of the use and enjoyment of a building, not only practical but aesthetic and cultural.
Nunzia Rondanini stated, "Through its aesthetic dimension architecture goes beyond the functional aspects that it has in common with other human sciences. Through its own particular way of expressing values, architecture can stimulate and influence social life without presuming that, in and of itself, it will promote social development.' To restrict the meaning of formalism to art for art's sake is not only reactionary. Among the philosophies that have influenced modern architects and their approach to building design are rationalism, structuralism, poststructuralism, phenomenology. In the late 20th century a new concept was added to those included in the compass of both structure and function, the consideration of sustainability, hence sustainable architecture. To satisfy the contemporary ethos a building should be constructed in a manner, environmentally friendly in terms of the production of its materials, its impact upon the natural and built environment of its surrounding area and the demands that it makes upon non-sustainable power sources for heating, cooling and waste management and lighting
Chemistry is the scientific discipline involved with elements and compounds composed of atoms and ions: their composition, properties and the changes they undergo during a reaction with other substances. In the scope of its subject, chemistry occupies an intermediate position between physics and biology, it is sometimes called the central science because it provides a foundation for understanding both basic and applied scientific disciplines at a fundamental level. For example, chemistry explains aspects of plant chemistry, the formation of igneous rocks, how atmospheric ozone is formed and how environmental pollutants are degraded, the properties of the soil on the moon, how medications work, how to collect DNA evidence at a crime scene. Chemistry addresses topics such as how atoms and molecules interact via chemical bonds to form new chemical compounds. There are four types of chemical bonds: covalent bonds, in which compounds share one or more electron; the word chemistry comes from alchemy, which referred to an earlier set of practices that encompassed elements of chemistry, philosophy, astronomy and medicine.
It is seen as linked to the quest to turn lead or another common starting material into gold, though in ancient times the study encompassed many of the questions of modern chemistry being defined as the study of the composition of waters, growth, disembodying, drawing the spirits from bodies and bonding the spirits within bodies by the early 4th century Greek-Egyptian alchemist Zosimos. An alchemist was called a'chemist' in popular speech, the suffix "-ry" was added to this to describe the art of the chemist as "chemistry"; the modern word alchemy in turn is derived from the Arabic word al-kīmīā. In origin, the term is borrowed from the Greek χημία or χημεία; this may have Egyptian origins since al-kīmīā is derived from the Greek χημία, in turn derived from the word Kemet, the ancient name of Egypt in the Egyptian language. Alternately, al-kīmīā may derive from χημεία, meaning "cast together"; the current model of atomic structure is the quantum mechanical model. Traditional chemistry starts with the study of elementary particles, molecules, metals and other aggregates of matter.
This matter can be studied in isolation or in combination. The interactions and transformations that are studied in chemistry are the result of interactions between atoms, leading to rearrangements of the chemical bonds which hold atoms together; such behaviors are studied in a chemistry laboratory. The chemistry laboratory stereotypically uses various forms of laboratory glassware; however glassware is not central to chemistry, a great deal of experimental chemistry is done without it. A chemical reaction is a transformation of some substances into one or more different substances; the basis of such a chemical transformation is the rearrangement of electrons in the chemical bonds between atoms. It can be symbolically depicted through a chemical equation, which involves atoms as subjects; the number of atoms on the left and the right in the equation for a chemical transformation is equal. The type of chemical reactions a substance may undergo and the energy changes that may accompany it are constrained by certain basic rules, known as chemical laws.
Energy and entropy considerations are invariably important in all chemical studies. Chemical substances are classified in terms of their structure, phase, as well as their chemical compositions, they can be analyzed using the tools of e.g. spectroscopy and chromatography. Scientists engaged in chemical research are known as chemists. Most chemists specialize in one or more sub-disciplines. Several concepts are essential for the study of chemistry; the particles that make up matter have rest mass as well – not all particles have rest mass, such as the photon. Matter can be a mixture of substances; the atom is the basic unit of chemistry. It consists of a dense core called the atomic nucleus surrounded by a space occupied by an electron cloud; the nucleus is made up of positively charged protons and uncharged neutrons, while the electron cloud consists of negatively charged electrons which orbit the nucleus. In a neutral atom, the negatively charged electrons balance out the positive charge of the protons.
The nucleus is dense. The atom is the smallest entity that can be envisaged to retain the chemical properties of the element, such as electronegativity, ionization potential, preferred oxidation state, coordination number, preferred types of bonds to form. A chemical element is a pure substance, composed of a single type of atom, characterized by its particular number of protons in the nuclei of its atoms, known as the atomic number and represented by the symbol Z; the mass number is the sum of the number of neutrons in a nucleus. Although all the nuclei of all atoms belonging to one element will have the same