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Topic Review
Karōshi
Karōshi (過労死), which can be translated literally as "overwork death" in Japanese, is occupational sudden mortality. The major medical causes of karōshi deaths are heart attack and stroke due to stress and a starvation diet. This phenomenon is also widespread in other parts of Asia as well.
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  • 21 Nov 2022
Topic Review
Two-Ray Ground-Reflection Model
The Two-Rays Ground Reflected Model is a radio propagation model which predicts the path losses between a transmitting antenna and a receiving antenna when they are in LOS (line of sight). Generally, the two antenna each have different height. The received signal having two components, the LOS component and the multipath component formed predominantly by a single ground reflected wave.
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  • 08 Nov 2022
Topic Review
Anthropomorphism on Dog Emotions and Behavior
Anthropomorphism is defined as the tendency to attribute human forms, behaviors, and emotions to non-human animals or objects. Anthropomorphism is particularly relevant for companion animals. Some anthropomorphic practices can be beneficial to them, whilst others can be very detrimental. Some anthropomorphic behaviors compromise the welfare and physiology of animals by interfering with thermoregulation, while others can produce dehydration due to the loss of body water, a condition that brings undesirable consequences such as high compensatory blood pressure and heat shock, even death, depending on the intensity and frequency of an animal’s exposure to these stressors.
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  • 05 Jan 2022
Topic Review
Almond Kernel
This entry is about Non-Lipid Components and Minor Fat-Soluble Bioactive Compounds of Almond Kernel.
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  • 08 Dec 2020
Topic Review
Relics Associated with Buddha
According to Mahaparinibbana Sutta, after his death, the Buddha was cremated and the ashes divided among his followers.
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  • 04 Nov 2022
Topic Review
Bicameralism (Psychology)
Bicameralism[Note 1] (the condition of being divided into "two-chambers") is a controversial hypothesis in psychology and neuroscience which argues that the human mind once operated in a state in which cognitive functions were divided between one part of the brain which appears to be "speaking", and a second part which listens and obeys—a bicameral mind, and that the evolutionary breakdown of this division gave rise to consciousness in humans. The term was coined by Julian Jaynes, who presented the idea in his 1976 book The Origin of Consciousness in the Breakdown of the Bicameral Mind, wherein he made the case that a bicameral mentality was the normal and ubiquitous state of the human mind as recently as 3,000 years ago, near the end of the Mediterranean bronze age.
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  • 10 Oct 2022
Topic Review
Tourism Commercialization and Perceived Authenticity
The concept of authenticity is closely related to heritage tourism, especially cultural heritage tourism. Seeking authenticity is one of the main trends in heritage tourism because people want to identify and understand themselves or reminisce about the past by looking back to the old ways of life and cultural traditions. Compared with actual authenticity, perceived authenticity has more value. It is a bridge between heritage authenticity and tourist experience. Heritage tourism is essentially a form of tourism that attracts tourists based on the commercialization of historical and cultural assets. A heritage site not only draws tourists to experience the authentic past, but it also provides them with a place for entertainment, relaxation and consumption. That is, heritage tourism development inevitably encounters commercialization. From a demand perspective, heritage tourism is an emotional experience, the perception of tourists at its core.
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  • 22 Jun 2021
Topic Review
List of ASTM International Standards
This is a list of ASTM International standards. Standard designations usually consist of a letter prefix and a sequentially assigned number. This may optionally be followed by a dash and the last two digits of the year in which the standard was adopted. Prefix letters correspond to the following subjects: This list may include either current or withdrawn standards. A withdrawn standard has been discontinued by its sponsoring committee. A standard may be withdrawn with or without replacement.
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  • 01 Nov 2022
Topic Review
African Sheep Breeds
The African continent is home to more than 400 million heads of sheep, the majority of which are classified as indigenous and raised primarily for subsistence. They live and thrive well in a wide range of climatic and production conditions, ranging from unfavorable to favorable environments. 
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  • 17 Sep 2021
Topic Review
Straight-Three Engine
A straight-three engine, also known as an inline-triple, or inline-three (abbreviated I3 or L3), is a reciprocating piston internal combustion engine with three cylinders arranged in a straight line or plane, side by side.
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  • 31 Oct 2022
Topic Review
Circassian Beauties
Circassian beauty or Adyghe beauty (Adyghe: Адыгэ пшъашъэ, romanized: Adıgə pş̂aş̂ə) is a stereotype and a belief used to refer to an idealized image of the women of the Circassian people of the Northwestern Caucasus. A fairly extensive literary history suggests that Circassian women were thought to be unusually beautiful, spirited, and elegant, and as such were desirable as concubines. This reputation dates back to the Late Middle Ages, when the Circassian coast was frequented by traders from Genoa, and the founder of the Medici dynasty, Cosimo de' Medici, had an illegitimate son from a Circassian slave. During the Ottoman Empire and Persian Safavid and Qajar dynasties, Circassian women living as slaves in the Sultan's Imperial Harem and Shah's harems started to build their reputation as extremely beautiful and genteel, which then became a common trope in Western Orientalism. As a result of this reputation, in Europe and America Circassians were often characterised as ideals of feminine beauty in poetry and art. Cosmetic products were advertised, from the 18th century on, using the word "Circassian" in the title, or claiming that the product was based on substances used by the women of Circassia. In consequence, most wives of several Ottoman Sultans were ethnic Circassians converted to Islam, e.g. Valide Sultans (Empress mothers), including Perestü Valide Sultan, Şevkefza Valide Sultan, Tirimüjgan Valide Sultan, Nükhetseza Başhanımefendi, other important Hatuns (Ladies) and Sultans like Şemsiruhsar Hatun and Saçbağlı Sultan, Haseki sultans (chief consorts) such as Hümaşah Haseki Sultan, Hatice Muazzez Haseki Sultan, and Ayşe Haseki Sultan besides numerous Başkadınefendis (most senior consorts), including Bedrifelek I, Bidar II, Kamures I, and Servetseza I as well as Kadınefendis (senior consorts) such as Bezmara VI, Düzdidil III, Hayranıdil II, Meyliservet IV, Mihrengiz II, Neşerek III, Nurefsun II, Reftaridil II, Şayan III, amongst many others, or İkbals (honoured lady consorts), most notable of them being Cevherriz II, Ceylanyar II, Dilfirib I, Nalanıdil III, and Nergis IV in addition to Gözdes (favourite lady consorts), including Dürdane I, Hüsnicenan III, Safderun IV, amongst others. The "golden age" of the Circassian beauty may be considered to be between the 1770s, when the Russian Empire seized the Crimean Khanate and cut off their slave trade, which increased the demand for Circassian women in Near Eastern harems; and the 1860s, when the Russians massacred thousands of Circassians and conquered Circassia. In the 1860s the showman P. T. Barnum exhibited women who he claimed were Circassian beauties. They wore a distinctive curly, big hair style, which had no precedent in earlier portrayals of Circassians, but which was soon copied by other female performers in the United States, who became known as "moss-haired girls". This hair style was a sort of exhibit's trademark and was achieved by washing the hair of women in beer, drying it and then teasing it. It is not clear why Barnum chose this hairstyle. It may have been a reference to the Circassian fur hat, rather than the hair. There were also several classical Turkish music pieces and poems that praise the beauty of the Circassian ethnic group like "Lepiska Saçlı Çerkes" (Straight, flaxen-haired Circassian; "lepiska" refers to long blonde hair which is straight, as if flatironed). As a foreign group, they were always praised in Turkey for what they labeled as distinct and pure European features.
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  • 24 Nov 2022
Topic Review
Customer Centricity
Firms are increasingly organized around the client. At the same time, there is customer pressure on green and sustainable organizations. This entry joint this two stand points in a sustainable view.
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  • 03 Mar 2023
Topic Review
First Bulgarian Empire
The First Bulgarian Empire (Old Bulgarian: ц︢рьство бл︢гарское, ts'rstvo bl'garskoe) was a medieval Bulgarian state that existed in Southeastern Europe between the 7th and 11th centuries AD. It was founded in 681 when Bulgar tribes led by Asparuh moved to the northeastern Balkans. There they secured Byzantine recognition of their right to settle south of the Danube by defeating – possibly with the help of local South Slavic tribes – the Byzantine army led by Constantine IV. At the height of its power, Bulgaria spread from the Danube Bend to the Black Sea and from the Dnieper River to the Adriatic Sea. As the state solidified its position in the Balkans, it entered into a centuries-long interaction, sometimes friendly and sometimes hostile, with the Byzantine Empire. Bulgaria emerged as Byzantium's chief antagonist to its north, resulting in several wars. The two powers also enjoyed periods of peace and alliance, most notably during the Second Arab siege of Constantinople, where the Bulgarian army broke the siege and destroyed the Arab army, thus preventing an Arab invasion of Southeastern Europe. Byzantium had a strong cultural influence on Bulgaria, which also led to the eventual adoption of Christianity in 864. After the disintegration of the Avar Khaganate, the country expanded its territory northwest to the Pannonian Plain. Later the Bulgarians confronted the advance of the Pechenegs and Cumans, and achieved a decisive victory over the Magyars, forcing them to establish themselves permanently in Pannonia. During the late 9th and early 10th centuries, Simeon I achieved a string of victories over the Byzantines. Thereafter, he was recognized with the title of Emperor, and proceeded to expand the state to its greatest extent. After the annihilation of the Byzantine army in the battle of Anchialus in 917, the Bulgarians laid siege to Constantinople in 923 and 924. The Byzantines, however, eventually recovered, and in 1014, under Basil II, inflicted a crushing defeat on the Bulgarians at the Battle of Kleidion. By 1018, the last Bulgarian strongholds had surrendered to the Byzantine Empire, and the First Bulgarian Empire had ceased to exist. It was succeeded by the Second Bulgarian Empire in 1185. After the adoption of Christianity, Bulgaria became the cultural center of Slavic Europe. Its leading cultural position was further consolidated with the invention of the Glagolitic and Early Cyrillic alphabets shortly after in the capital Preslav, and literature produced in Old Bulgarian soon began spreading north. Old Bulgarian became the lingua franca of much of Eastern Europe and it came to be known as Old Church Slavonic. In 927, the fully independent Bulgarian Patriarchate was officially recognized. The ruling Bulgars and other non-Slavic tribes in the empire gradually mixed and adopted the prevailing Slavic language, thus gradually forming the Bulgarian nation from the 7th century to the 9th century. Since the late 9th century, the names Bulgarians and Bulgarian gained prevalence and became permanent designations for the local population, both in literature and in common parlance. The development of Old Church Slavonic literacy had the effect of preventing the assimilation of the South Slavs into neighbouring cultures, while stimulating the formation of a distinct Bulgarian identity.
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  • 25 Oct 2022
Topic Review
Context-Dependent Memory
In psychology, context-dependent memory is the improved recall of specific episodes or information when the context present at encoding and retrieval are the same. In a simpler manner, "when events are represented in memory, contextual information is stored along with memory targets; the context can therefore cue memories containing that contextual information". One particularly common example of context-dependence at work occurs when an individual has lost an item (e.g. lost car keys) in an unknown location. Typically, people try to systematically "retrace their steps" to determine all of the possible places where the item might be located. Based on the role that context plays in determining recall, it is not at all surprising that individuals often quite easily discover the lost item upon returning to the correct context. This concept is heavily related to the encoding specificity principle. This example best describes the concept of context-dependent forgetting. However, the research literature on context-dependent memory describes a number of different types of contextual information that may affect recall such as environmental context-dependent memory, state-dependent learning, cognitive context-dependent memory and mood-congruent memory. Research has also shown that context-dependence may play an important role in numerous situations, such as memory for studied material, or events that have occurred following the consumption of alcohol or other drugs.
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  • 03 Nov 2022
Topic Review
Applications of polydimethylsiloxane (PDMS) in Engineering
Polydimethylsiloxane (PDMS) is an elastomer with excellent optical, electrical and mechanical properties, which makes it well-suited for several engineering applications. Due to its biocompatibility, PDMS is widely used for biomedical purposes. Some properties can be improved by adding additives.
  • 10.6K
  • 12 Jan 2022
Topic Review
Antenna Gain
In electromagnetics, an antenna's power gain or simply gain is a key performance number which combines the antenna's directivity and electrical efficiency. In a transmitting antenna, the gain describes how well the antenna converts input power into radio waves headed in a specified direction. In a receiving antenna, the gain describes how well the antenna converts radio waves arriving from a specified direction into electrical power. When no direction is specified, gain is understood to refer to the peak value of the gain, the gain in the direction of the antenna's main lobe. A plot of the gain as a function of direction is called the gain pattern or radiation pattern. Antenna gain is usually defined as the ratio of the power produced by the antenna from a far-field source on the antenna's beam axis to the power produced by a hypothetical lossless isotropic antenna, which is equally sensitive to signals from all directions. Usually this ratio is expressed in decibels, and these units are referred to as decibels-isotropic (dBi). An alternative definition compares the received power to the power received by a lossless half-wave dipole antenna, in which case the units are written as dBd. Since a lossless dipole antenna has a gain of 2.15 dBi, the relation between these units is [math]\displaystyle{ \mathrm{Gain(dBd)} = \mathrm{Gain(dBi)} - 2.15 }[/math]. For a given frequency, the antenna's effective area is proportional to the power gain. An antenna's effective length is proportional to the square root of the antenna's gain for a particular frequency and radiation resistance. Due to reciprocity, the gain of any reciprocal antenna when receiving is equal to its gain when transmitting. Directive gain or directivity is a different measure which does not take an antenna's electrical efficiency into account. This term is sometimes more relevant in the case of a receiving antenna where one is concerned mainly with the ability of an antenna to receive signals from one direction while rejecting interfering signals coming from a different direction.
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  • 10 Oct 2022
Topic Review
Occupational Stress
Occupational stress is psychological stress related to one's job. Occupational stress refers to a chronic condition. Occupational stress can be managed by understanding what the stressful conditions at work are and taking steps to remediate those conditions. Occupational stress can occur when workers do not feel supported by supervisors or coworkers, feel as if they have little control over the work they perform, or find that their efforts on the job are incommensurate with the job's rewards. Occupational stress is a concern for both employees and employers because stressful job conditions are related to employees' emotional well-being, physical health, and job performance. A landmark study conducted by the World Health Organization and the International Labour Organization found that exposure to long working hours, which are theorized to operate through increased psycho-social occupational stress, is the occupational risk factor with the largest attributable burden of disease, according to these official estimates causing an estimated 745,000 workers to die from ischemic heart disease and stroke events in 2016. A number of disciplines within psychology are concerned with occupational stress including occupational health psychology, human factors and ergonomics, epidemiology, occupational medicine, sociology, industrial and organizational psychology, and industrial engineering.
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  • 30 Sep 2022
Topic Review
Digital Protective Relay
In utility and industrial electric power transmission and distribution systems, a digital protective relay is a computer-based system with software-based protection algorithms for the detection of electrical faults. Such relays are also termed as microprocessor type protective relays. They are functional replacements for electro-mechanical protective relays and may include many protection functions in one unit, as well as providing metering, communication, and self-test functions.
  • 10.6K
  • 09 Oct 2022
Topic Review
Social Construct Theory of ADHD
The social construction theory of ADHD argues that attention deficit hyperactivity disorder is not necessarily an actual pathology, but that an ADHD diagnosis is a socially constructed explanation to describe behaviors that simply do not meet prescribed social norms. Some proponents of the social construct theory of ADHD seem to regard the disorder as genuine, though over-diagnosed in some cultures. These proponents cite as evidence that the DSM IV, favored in the United States for defining and diagnosing mental illness, arrives at levels of ADHD three to four times higher than criteria in the ICD 10, the diagnostic guide favored by the World Health Organization. A popular proponent of this theory, Thomas Szasz, has argued that ADHD was "invented and not discovered."
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  • 22 Nov 2022
Topic Review
Shenyang J-31
The Shenyang J-31 (or "FC-31 fifth Generation Multi-Purpose light Fighter") also known as the "Gyrfalcon" (鹘鹰), or "Falcon Hawk" by some military enthusiasts, is a twin-engine, mid-size fifth-generation jet fighter currently under development by Shenyang Aircraft Corporation. The fighter has also been referred to as the "F-60" or "J-21 Snowy Owl" (雪鸮) in some media reports. Its official name is Shenyang FC-31; J-xx nomenclatures in the Chinese military are reserved to programs launched and financed by the army, while this plane was developed by a state-owned company.
  • 10.6K
  • 10 Nov 2022
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