pedagogy: Instructional media: In general, instructional media are seen by educators as aids rather than substitutions for the teacher. Teachers spend a disproportionate amount of their time in routine chores—in collecting and assigning books and materials and in marking, or grading—that could be partly obviated if…

Commodianus: All but two of his Instructiones—80 poems in two books—are in acrostic form, undoubtedly because the technique was a useful mnemonic device. In the work he attacked pagan deities, criticized the Jews, and admonished Christians. His verse has no poetic value and is of interest chiefly for its employment of…

war crime: Definition and conceptual development: …of war crimes was the Instructions for the Government of Armies of the United States in the Field—also known as the “Lieber Code” after its main author, Francis Lieber—which was issued by U.S. Pres. Abraham Lincoln during the American Civil War and distributed among Union military personnel in 1863. For…

Amenemhet I: The Instruction of Amenemhet, a political piece cast as an address of Amenemhet to Sesostris, described the assassination attempt and gave the new king advice concerning government. Another politically motivated work, The Story of Sinuhe, described Sesostris’s receipt of the news, his reaction, and the…

Tess Gallagher: …first full-length volume of verse, Instructions to the Double (1976), is a confessional work about synthesizing her past life with her future career as a poet.

St. Clement of Alexandria: Views on wealth of St. Clement of Alexandria: From the tenor of the Paidagōgos, one can conclude that the majority of Clement’s audience came from the ranks of Alexandrian middle and upper classes, with a few intelligent poorer members coming from the Alexandrian masses. The problem of wealth was disturbing to the pistic Christians, who interpreted literally the…

musical instrument, any device for producing a musical sound. The principal types of such instruments, classified by the method of producing sound, are percussion, stringed, keyboard, wind, and electronic. Musical instruments are almost universal components of human culture: archaeology has

traffic control: Conventional control techniques: …all pilots must obey the instrument flight rule; that is, they must depend principally on the information provided by the plane’s instruments for their safety. In poor visibility and at night, instrument flight rules invariably apply. At airports, in control zones, all movements are subject to permission and instruction from…

Iran: Nuclear deal falters: …with Iran, known as the Instrument in Support of Trade Exchanges (INSTEX). The sanctions went into effect on November 5, though the United States granted exemptions to China, India, Italy, Greece, Japan, South Korea, Taiwan, and Turkey to continue importing oil from Iran for six months. Those exemptions expired in…

instrument landing system (ILS), electronic guidance system designed to help airline pilots align their planes with the centre of a landing strip during final approach under conditions of poor visibility. The ground equipment of the ILS consists of two directional transmitters that send out radio

airport: Navigational aids, lighting, and marking: …hours of darkness and under instrument meteorological conditions (IMC), when horizontal visibility is 600 metres (2,000 feet) or less and the cloud base (or “decision height”) is 60 metres (200 feet) or lower. In order to assist aircraft in approaches and takeoffs and in maneuvering on the ground, such airports…

Kashmir: The Kashmir problem: …Pashtun tribesmen, he signed an Instrument of Accession to the Indian union in October 1947. This was the signal for intervention both by Pakistan, which considered the state to be a natural extension of Pakistan, and by India, which intended to confirm the act of accession. Localized warfare continued during…

Armenian language: Morphology and syntax: accusative, ablative, instrumental, and locative. However, many of these forms overlapped so that usually only three or four different forms existed; e.g., žam ‘time’ was both nominative and accusative, žamê was ablative, and žamu was genitive, dative, instrumental, and locative. A special form of locative was very…

chemical analysis: …the second category, which is instrumental analysis. It involves the use of an instrument, other than a balance, to perform the analysis. A wide assortment of instrumentation is available to the analyst. In some cases, the instrument is used to characterize a chemical reaction between the analyte and an added…

operant conditioning, in psychology and the study of human and animal behaviour, a mechanism of learning through which humans and animals come to perform or to avoid performing certain behaviours in response to the presence or absence of certain environmental stimuli. The behaviours are

chamber music: …music, music composed for small ensembles of instrumentalists. In its original sense, chamber music referred to music composed for the home, as opposed to that written for the theatre or church. Since the “home”—whether it be drawing room, reception hall, or palace chamber—may be assumed to be of limited size,…

operant conditioning, in psychology and the study of human and animal behaviour, a mechanism of learning through which humans and animals come to perform or to avoid performing certain behaviours in response to the presence or absence of certain environmental stimuli. The behaviours are

chamber music: This article discusses instrumental ensemble music written for groups of two to eight players with one player to a part, and in which stringed instruments and piano (or harpsichord) supply the principal interest.

Etta Baker: …the folk music compilation album Instrumental Music of the Southern Appalachians (1956). Although her performance on that album widely influenced musicians such as Bob Dylan and Taj Mahal, not until after her husband’s death and her retirement from the textile mill did she begin to appear at folk festivals and…

Emmanuel Lévinas: …a basic manifestation of “instrumental” reason—the use of reason as an instrument for determining the best or most efficient means to achieve a given end. Through its embrace of instrumental reason, Western philosophy displays a destructive and objectifying “will to domination.” Moreover, because instrumental reason does not determine the…

culture: Evolution of minding: Third is the instrumental stage, as exemplified by a chimpanzee knocking down a banana with a stick. Here the response is determined by the intrinsic properties of the things involved (banana, stick, chimpanzee’s neurosensory-muscular system); but a new element has been introduced into behaviour, namely, the exercise of…

axiology: …distinction is commonly made between instrumental and intrinsic value—between what is good as a means and what is good as an end. John Dewey, in Human Nature and Conduct (1922) and Theory of Valuation (1939), presented a pragmatic interpretation and tried to break down this distinction between means and ends,…

instrumentalism, in the philosophy of science, the view that the value of scientific concepts and theories is determined not by whether they are literally true or correspond to reality in some sense but by the extent to which they help to make accurate empirical predictions or to resolve conceptual

ethnic conflict: Theories of ethnic identity: …second approach, referred to as instrumentalist, was developed, which understands ethnicity as a device used by individuals and groups to unify, organize, and mobilize populations to achieve larger goals. Those goals are mostly of a political nature and include, among others, demands for self-governance, autonomy, access to resources and power,…

instrumentals, type of popular music performed without a vocalist, in any of several genres but especially prevalent in rock and roll in the late 1950s and early 1960s. Serving primarily as dance music, rock-and-roll and rhythm-and-blues instrumentals began appearing on the pop charts in the

instrumentation, in music, arrangement or composition for instruments. Most authorities make little distinction between the words instrumentation and orchestration. Both deal with musical instruments and their capabilities of producing various timbres or colours. Orchestration is somewhat the

instrumentation, in technology, the development and use of precise measuring equipment. Although the sensory organs of the human body can be extremely sensitive and responsive, modern science and technology rely on the development of much more precise measuring and analytical tools for studying,

instrumentation, in technology, the development and use of precise measuring equipment. Although the sensory organs of the human body can be extremely sensitive and responsive, modern science and technology rely on the development of much more precise measuring and analytical tools for studying,

Charles Stark Draper: The Instruments Laboratory (I-Lab), which he founded in 1934, became a centre for both academic and commercial research, a combination that was not unusual at the time. It was through the I-Lab that Draper established a relationship with the Sperry Gyroscope Company (now part of Unisys…

Insubres, the most powerful Celtic people of Gallia Cisalpina (Cisalpine Gaul), in northern Italy. Despite their defeat at Clastidium (modern Casteggio) by Roman forces in 222 bc, they continued to be troublesome and aided the Carthaginian general Hannibal in the Second Punic War (218–201 bc). The

insula, (Latin: “island”), in architecture, block of grouped but separate buildings or a single structure in ancient Rome and Ostia. The insulae were largely tenements providing economically practical housing where land values were high and population dense. Distinct from the domus, the upper-class

Greece: Late Roman administration: Crete (Kríti), and the Islands (Insulae). Of the eight provinces, all except Rhodope and the Islands were a part of the larger diocese of Moesia, which extended to the Danube River in the north. (The word diocese originally referred to a governmental area governed by a Roman imperial vicar.…

Eolie Islands, volcanic island group in the Tyrrhenian Sea (of the Mediterranean) off the north coast of Sicily, Italy. The group, with a total land area of 34 square miles (88 square km), consists of seven major islands and several islets lying in a general “Y” shape. The base of the Y is formed

Portuguese language: Alentejo, and Algarve, (3) Insular, including the dialects of Madeira and the Azores, and (4) Brazilian. Standard Portuguese was developed in the 16th century, basically from the dialects spoken from Lisbon to Coimbra. Brazilian (Brasileiro) differs from the Portuguese spoken in Portugal in several respects, in syntax as well…

human nervous system: Lobes of the cerebral cortex: …of the cerebrum is the insular, or central, lobe, an invaginated triangular area on the medial surface of the lateral sulcus; it can be seen in the intact brain only by separating the frontal and parietal lobes from the temporal lobe. The insular lobe is thought to be involved in…

English literature: Fiction: Particularly notable is An Insular Possession (1986), which vividly harks back to the founding of Hong Kong. Kazuo Ishiguro’s spare, refined novel An Artist of the Floating World (1986) records how a painter’s life and work became insidiously coarsened by the imperialistic ethos of 1930s Japan. Novelists such…

Insular script, in calligraphy, any of several hands that developed in the British Isles after the Roman occupation of England and before the Norman Conquest. The foremost achievement of the combined Irish and English book artists, apart from their famous illumination, was the Insular half-uncial,

East Indies, the islands that extend in a wide belt along both sides of the Equator for more than 3,800 miles (6,100 km) between the Asian mainland to the north and west and Australia to the south. Historically, the term East Indies is loosely applied to any of three contexts. The most restrictive

printed circuit: In a basic implementation, an insulating board (e.g., epoxy mixed with fiberglass or paper fibres) is coated with copper, and a protective film is deposited and patterned photographically. The unprotected copper is then etched away in an acid bath. The remaining conductive copper is left intact in the desired pattern…

insulator, any of various substances that block or retard the flow of electrical or thermal currents. Although an electrical insulator is ordinarily thought of as a nonconducting material, it is in fact better described as a poor conductor or a substance of high resistance to the flow of electric

insulin, hormone that regulates the level of sugar (glucose) in the blood and that is produced by the beta cells of the islets of Langerhans in the pancreas. Insulin is secreted when the level of blood glucose rises—as after a meal. When the level of blood glucose falls, secretion of insulin stops,

insulin shock therapy, form of psychiatric treatment in which patients were given increasingly large doses of insulin in order to induce hypoglycemia (low blood glucose) and coma. Insulin shock therapy was based on the notion that hypoglycemia-induced coma could basically “jolt” patients out of

insulin shock therapy, form of psychiatric treatment in which patients were given increasingly large doses of insulin in order to induce hypoglycemia (low blood glucose) and coma. Insulin shock therapy was based on the notion that hypoglycemia-induced coma could basically “jolt” patients out of

immune system disorder: Type I (insulin-dependent) diabetes mellitus: Type I diabetes mellitus is the autoimmune form of diabetes and often arises in childhood. It is caused by the destruction of cells of the pancreatic tissue called the islets of Langerhans. Those cells normally produce insulin, the hormone that…

hypoglycemia: Insulin-dependent hypoglycemia is caused by too much insulin (hyperinsulinemia), usually attributed to the intake of a sulfonylurea drug or to the presence of excess insulin in a patient with diabetes. Other, much less common causes of insulin-dependent hypoglycemia may include an insulin-secreting tumour of the…

hypoglycemia: Insulin-independent hypoglycemia is caused by disorders that result in impaired glucose mobilization during fasting (defects in gluconeogenesis or glycogenolysis). Impaired glucose mobilization may be caused by adrenal insufficiency, severe liver disease, glycogen storage disease, severe infections, and starvation. Insulin-dependent hypoglycemia is

insulin-like growth factor (IGF), any of several peptide hormones that function primarily to stimulate growth but that also possess some ability to decrease blood glucose levels. IGFs were discovered when investigators began studying the effects of biological substances on cells and tissues outside

insulin-like growth factor: There are two IGFs: IGF-1 and IGF-2. These two factors, despite the similarity of their names, are distinguishable in terms of specific actions on tissues because they bind to and activate different receptors. The major action of IGFs is on cell growth. Indeed, most of the actions of pituitary…

cancer: Milestones in cancer science: …gene known as IGF2 (insulin-like growth factor 2), for instance, has been linked to an increased risk for certain types of cancer, including colorectal cancer and nephroblastoma. Other products of regulatory genes, such as microRNAs, have also been implicated in the malignant transformation of cells, and it is likely…

Samuel Insull was a British-born American public utilities magnate whose vast Midwest holding company empire collapsed in the 1930s. After working with one of Thomas A. Edison’s London representatives, Insull went to the United States in 1881 to become Edison’s private secretary. When the Edison

insurance: Limitations on amount recoverable: …amount of an insured person’s insurable interest. Thus, if a homeowner has only a one-half interest in a building, the recovery is limited to one-half of the insured loss. The co-owners would need to have arranged insurance for their interest.

insurance: …standpoint of the insurer, an insurable risk must meet the following requirements:

insurance, a system under which the insurer, for a consideration usually agreed upon in advance, promises to reimburse the insured or to render services to the insured in the event that certain accidental occurrences result in losses during a given period. It thus is a method of coping with risk.

insurance: Very often contracts can be drawn in such a way that an “uninsurable risk” can be turned into an “insurable” one through restrictions on losses, redefinitions of perils, or other methods.

insurance: Homeowner’s insurance: Homeowner’s insurance covers individual, or nonbusiness, property. Introduced in 1958, it gradually replaced the older method of insuring individual property under the “standard fire policy.”

insurance: Very often contracts can be drawn in such a way that an “uninsurable risk” can be turned into an “insurable” one through restrictions on losses, redefinitions of perils, or other methods.

insurance: …high as to require excessive premiums. What is “excessive” depends on individual circumstances, including the insured’s attitude toward risk. At the same time, the potential loss must be severe enough to cause financial hardship if it is not insured against. Insurable risks include losses to property resulting from fire, explosion,…

insurgency, term historically restricted to rebellious acts that did not reach the proportions of an organized revolution. It has subsequently been applied to any such armed uprising, typically guerrilla in character, against the recognized government of a state or country. In traditional

insurgency, term historically restricted to rebellious acts that did not reach the proportions of an organized revolution. It has subsequently been applied to any such armed uprising, typically guerrilla in character, against the recognized government of a state or country. In traditional

Zoë Kravitz: Popular series: Divergent and Fantastic Beasts: …the Divergent trilogy (Divergent [2014], Insurgent [2015], and Allegiant [2016]), adapted from a sci-fi young adult (YA) book series by Veronica Roth; Toast the Knowing in George Miller’s Mad Max: Fury Road (2015), a postapocalyptic action drama that was a huge box office hit; and Leta Lestrange in Fantastic Beasts…

Veronica Roth: Insurgent, released in 2012, captured the number one spot on that list. Roth had clearly hit her stride at the right moment—the niche market for dystopian novels was blossoming, and her offerings came on the heels of the popular Twilight and Hunger Games young-adult series.…

insurance: Liability insurance: One is the insuring clause, in which the insurer agrees to pay on behalf of the insured all sums that the insured shall become legally obligated to pay as damages because of bodily injury, sickness or disease, wrongful death, or injury to another person’s property. The liability policy…

insurrection, an organized and usually violent act of revolt or rebellion against an established government or governing authority of a nation-state or other political entity by a group of its citizens or subjects; also, any act of engaging in such a revolt. An insurrection may facilitate or bring

anarchism: Anarchism as a movement, 1870–1940: …by Italian anarchists that “the insurrectionary deed destined to affirm socialist principles by acts, is the most efficacious means of propaganda.” The first acts were rural insurrections intended to arouse the illiterate masses of the Italian countryside. After the insurrections failed, anarchist activism tended to take the form of acts…

Wataya Risa: …age 17 with Insutōru (2001; Install; film 2004), for which she won the 2001 Bungei literary prize. The novel depicted a troubled high-school girl’s experience with the erotic world of adults through Internet chat rooms. Wataya went on to attend Waseda University, studying Japanese literature and education. Her second novel,…

cricket: Bowling: …swerves (curves) are the “inswinger,” which moves in the air from off to leg (into the batsman), and the “away swinger,” or “outswinger,” which swerves from leg to off (away from the batsman). A “googly” (coined by cricketer B.J.T. Bosanquet on the 1903–04 MCC tour) is a ball bowled…

health law: Termination of pregnancy: …was labeled by Congress as “partial-birth” abortion (a surgical abortion in which a late-term fetus is removed through the cervix). In a 5–4 opinion, the Supreme Court permitted Congress to entirely outlaw this procedure on the basis that Congress could determine that its use undercut medical ethics and that other…

intaglio, in visual arts, one of the four major classes of printmaking techniques, distinguished from the other three methods (relief printing, stenciling, and lithography) by the fact that the ink forming the design is printed only from recessed areas of the plate. Among intaglio techniques are

intaglio, in sculpture, engraving or incised figure in stone or other hard material such that all lines appear below the surface; it is thus the opposite of relief sculpture and is sometimes called “hollow relief.” When the technique is used in casting, the design is cut in reverse into a plaster

coal mining: Ventilation: …set of mine entries (called intakes) to all places where miners may be working. After passing through the workings, this air (now termed return air) is conducted back to the surface through another set of entries (called returns). The intake and return airstreams are kept separate. Miners generally work in…

gasoline engine: Carburetor: …throttle valve, and into the intake manifold. A throat is formed by the reduced diameter, and acceleration of the air through this smaller passage causes a decrease in pressure proportional to the amount of air flowing. This decrease in throat pressure results in fuel flow from the jet into the…

diesel engine: Diesel combustion: …the combustion chamber on its intake stroke. Diesel engines are typically constructed with compression ratios in the range 14:1 to 22:1. Both two-stroke and four-stroke engine designs can be found among engines with bores (cylinder diameters) less than 600 mm (24 inches). Engines with bores of greater than 600 mm…

diesel engine: Two-stroke and four-stroke engines: …the typical four-stroke-cycle engine, the intake and exhaust valves and the fuel-injection nozzle are located in the cylinder head (see figure). Often, dual valve arrangements—two intake and two exhaust valves—are employed.

corporate finance: …allocation function is concerned with intangible assets such as goodwill, patents, workers, and brand names.

property: …had considerable difficulty in making intangible things the object of property. Some Western legal systems still deny the possibility of property in intangibles. In all Western legal systems, however, the great increase of wealth in the form of intangibles (stocks, bonds, bank accounts) has meant that property or property-like treatment…

intarsia, Form of wood inlay. Italian intarsia, or inlaid mosaic of wood, which probably derived from East Asian ivory and wood inlay, found its richest expression during the Renaissance in Italy (c. 1400–1600). It was often used in panels over the backs of choir stalls and in private studies and

Steuben Glass Company: Another specialty was Intarsia glass, crystal glassware with soft, overlapping colour inlays. In the 1930s the firm began making glassware from a new colourless lead crystal developed by Corning. Steuben later manufactured fine glass products of cut, engraved, and free-blown designs made almost exclusively of that type of…

Intef II, was the third king of the 11th dynasty (2081–1938 bce) in ancient Egypt, who during his long reign successfully warred against the allies of the Heracleopolitans—rulers of Middle and Lower Egypt composing the 9th and 10th dynasties (see ancient Egypt: The First Intermediate period). In

integer, whole-valued positive or negative number or 0. The integers are generated from the set of counting numbers 1, 2, 3,… and the operation of subtraction. When a counting number is subtracted from itself, the result is zero; for example, 4 − 4 = 0. When a larger number is subtracted from a

International Gamma-Ray Astrophysics Laboratory (Integral), European Space Agency–Russian–U.S. satellite observatory designed to study gamma rays emitted from astronomical objects. Integral was launched by Russia from the Baikonur Cosmodrome in Kazakhstan on October 17, 2002. It carried a gamma-ray

integral, in mathematics, either a numerical value equal to the area under the graph of a function for some interval (definite integral) or a new function the derivative of which is the original function (indefinite integral). These two meanings are related by the fact that a definite integral of

integral calculus, Branch of calculus concerned with the theory and applications of integrals. While differential calculus focuses on rates of change, such as slopes of tangent lines and velocities, integral calculus deals with total size or value, such as lengths, areas, and volumes. The two

radiation measurement: Counting systems: …electronic unit known as an integral discriminator to count only those pulses that are larger than a preset amplitude. This approach can eliminate small amplitude pulses that may be of no interest in the application. Alternatively, a differential discriminator (also known as a single-channel analyzer) will select only those pulses…

modern algebra: Structural axioms: …a set is called an integral domain. For example, the set of integers {…, −2, −1, 0, 1, 2, …} is a commutative ring with unity, but it is not a field, because axiom 10 fails. When only axiom 8 fails, a set is known as a division ring or…

integral equation, in mathematics, equation in which the unknown function to be found lies within an integral sign. An example of an integral equation isin which f(x) is known; if f(x) = f(-x) for all x, one solution

fascism: Volksgemeinschaft: …this doctrine, known as “integral nationalism,” were similarly illiberal, though not racist. The Japanese version, known as the “family-system principle,” maintained that the nation is like a family: it is strong only when the people obey their leaders in the same way children obey their parents.

cell membrane: …type of protein, called the intrinsic proteins. The intrinsic proteins, as their name implies, are firmly embedded within the phospholipid bilayer. In general, membranes actively involved in metabolism contain a higher proportion of protein.

integral transform, mathematical operator that produces a new function f(y) by integrating the product of an existing function F(x) and a so-called kernel function K(x, y) between suitable limits. The process, which is called transformation, is symbolized by the equation f(y) = ∫K(x, y)F(x)dx.

counterpoint: The 20th century: …counterpoint purely of tone colours, Intégrales (1925) by Edgard Varèse presents 11-note “sound-clouds” in the wind instruments in opposition to the sounds of a large battery of percussion instruments. This approach probably grew directly out of earlier experiments with polytonality, but here tone colours, rather than keys or tones, are…

Modernism: This group, known as Integralists (or Sodalitium Pianum, “Solidarity of Pius”), frequently employed overzealous and clandestine methods and hindered rather than helped the combating of Modernism. On September 1, 1910, at the urging of Benigni, Pius X issued Sacrorum antistitum, which prescribed that all teachers in seminaries and clerics…

Portuguese literature: From monarchy to republic: …and poet António Sardinha, the Integralist school, which favoured the Roman Catholic monarchist tradition, reacted to such perceived excesses from 1914 onward. Such sentiment contributed to the eventual fall of Portugal’s First Republic in 1926.

history of Latin America: Socialism, communism, fascism: …Brazil, whose green-shirted Integralistas (Ação Integralista Brasileira) emerged as the largest single national party in the mid-1930s until involvement in a foolhardy coup attempt led to their suppression. Hence the influence of fascism was more often exercised through homegrown authoritarians who were attracted to certain aspects of it but…

integraph, mathematical instrument for plotting the integral of a graphically defined function. Two such instruments were invented independently about 1880 by the British physicist Sir Charles Vernon Boys and the Lithuanian mathematician Bruno Abdank Abakanowicz and were later modified and improved

William Nordhaus: …economic climate system, later called integrated assessment models (IAMs), that incorporated basic theories and results from physics and chemistry and showed how the global economy and climate would evolve under different assumptions about the pace and mechanisms of global warming and the additional climate policies (e.g., carbon taxes or emission…

crime laboratory: Sections of crime laboratories: …have access to the FBI’s Integrated Automated Fingerprint Identification System, which is the largest biometric databases in the world, containing the fingerprints and criminal histories of more than 70 million criminals as well as more than 34 million civilian fingerprints.

integrated circuit (IC), an assembly of electronic components, fabricated as a single unit, in which miniaturized active devices (e.g., transistors and diodes) and passive devices (e.g., capacitors and resistors) and their interconnections are built up on a thin substrate of semiconductor material

integrated pest management, Technique for agricultural disease- and pest-control in which as many pest-control methods as possible are used in an ecologically harmonious manner to keep infestation within manageable limits. Integrated pest management addresses the serious ecological problems created

coal utilization: Advanced combustion technologies: …utilizing coal, known as the Integrated Gasification Combined Cycle, involves gasifying the coal (described below) and burning the gas to produce hot products of combustion at 1,600 °C (2,900 °F). These gaseous products in turn run a gas turbine, and the exhaust gases from the gas turbine can then be…

ship: Electric drive and integrated machinery plants: …giving rise to the term integrated machinery plant. Power for the propulsion motors passes through thyristor-based frequency changers; by changing propulsion frequency, these devices regulate propeller speed while all other power users continue to receive 60 hertz from the main system.

star cluster: Globular clusters: Integrated magnitudes (measurements of the total brightness of the cluster), cluster diameters, and the mean magnitude of the 25 brightest stars made possible the first distance determinations on the basis of the assumption that the apparent differences were due entirely to distance. However, the two…