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Topic Review
Active Pixel Sensor
An active-pixel sensor (APS) is an image sensor where each picture element ("pixel") has a photodetector and an active amplifier. There are many types of integrated circuit active pixel sensors including the complementary metal–oxide–semiconductor (CMOS) APS used most commonly in cell phone cameras, web cameras, most digital pocket cameras since 2010, in most digital single-lens reflex cameras (DSLRs) and Mirrorless interchangeable-lens cameras (MILCs). Such an image sensor is produced using CMOS technology (and is hence also known as a CMOS sensor), and has emerged as an alternative to charge-coupled device (CCD) image sensors. The term 'active pixel sensor' is also used to refer to the individual pixel sensor itself, as opposed to the image sensor; in that case the image sensor is sometimes called an active pixel sensor imager, or active-pixel image sensor.
  • 5.3K
  • 23 Nov 2022
Topic Review
Altitude (Triangle)
In geometry, an altitude of a triangle is a line segment through a vertex and perpendicular to (i.e., forming a right angle with) a line containing the base (the side opposite the vertex). This line containing the opposite side is called the extended base of the altitude. The intersection of the extended base and the altitude is called the foot of the altitude. The length of the altitude, often simply called "the altitude", is the distance between the extended base and the vertex. The process of drawing the altitude from the vertex to the foot is known as dropping the altitude at that vertex. It is a special case of orthogonal projection. Altitudes can be used in the computation of the area of a triangle: one half of the product of an altitude's length and its base's length equals the triangle's area. Thus, the longest altitude is perpendicular to the shortest side of the triangle. The altitudes are also related to the sides of the triangle through the trigonometric functions. In an isosceles triangle (a triangle with two congruent sides), the altitude having the incongruent side as its base will have the midpoint of that side as its foot. Also the altitude having the incongruent side as its base will be the angle bisector of the vertex angle. It is common to mark the altitude with the letter h (as in height), often subscripted with the name of the side the altitude is drawn to. In a right triangle, the altitude drawn to the hypotenuse c divides the hypotenuse into two segments of lengths p and q. If we denote the length of the altitude by hc, we then have the relation For acute and right triangles the feet of the altitudes all fall on the triangle's sides (not extended). In an obtuse triangle (one with an obtuse angle), the foot of the altitude to the obtuse-angled vertex falls in the interior of the opposite side, but the feet of the altitudes to the acute-angled vertices fall on the opposite extended side, exterior to the triangle. This is illustrated in the adjacent diagram: in this obtuse triangle, an altitude dropped perpendicularly from the top vertex, which has an acute angle, intersects the extended horizontal side outside the triangle.
  • 5.3K
  • 25 Oct 2022
Topic Review
Institutional Translation
Institutional Translation refers to translation activities or translated works initiated or benefited by institutions.
  • 5.3K
  • 02 Sep 2021
Topic Review
Cryptocurrencies in Accounting
The International Financial Reporting Standards Interpretations Committee (IFRSIC) (2019) proposed that the IAS 2 Inventories accounting standard is the accounting rule that best fits the holding of cryptocurrencies. As in the ordinary course of business, when holders want to sell their crypto assets, the best accounting rule is the IAS 2 Inventories. The IFRSIC (2019) also proposed that if the IAS 2 Inventories accounting standard is not appropriate for holdings of cryptocurrencies, another good choice is the IAS 38 Intangible Assets accounting standard. In most cases, IAS 38 will be the best accounting standard for holdings of cryptocurrencies.
  • 5.3K
  • 05 May 2022
Topic Review
Corporate Social Responsibility Preferences in South Africa
A firm’s corporate social responsibility (CSR) approach can encompass a wide variety of activities. These may include philanthropy (donating to charities), volunteering by employees, ethical labor practices, and implementing environmentally friendly operations. Diverse stakeholders and nationalities may view certain social initiatives as less or more important than others. As a result, firms respond by prioritizing those CSR activities that stakeholders in their operating environment consider important. This leads to firms having CSR preferences for some social and environmental activities over others. Traditionally, CSR in South Africa was delivered through corporate social investment (CSI): a philanthropic effort with firms implementing their social responsibility through charitable donations targeted at the education and healthcare of a firm’s surrounding communities.
  • 5.3K
  • 13 Apr 2022
Topic Review
Remote Attestation
Remote Attestation (RA) is a security mechanism to remotely detect adversarial presence on untrusted devices in order to guarantee their trustworthiness. RA runs as a two-party security protocol in which a trusted party (i.e., verifier) assures the integrity of the untrusted remote device (i.e., prover). Software-based RA approaches aim at verifying device integrity without relying on specialized hardware components. Despite their limited security guarantees, software-based RA approaches bring opportunities in attesting legacy and resource-constrained Internet of Things (IoT) devices, in which the presence of a hardware root-of-trust is not always a realistic assumption.
  • 5.3K
  • 31 Jan 2022
Topic Review
Phosphorus (Morning Star)
Phosphorus (Greek Φωσφόρος Phōsphoros) is the Morning Star, the planet Venus in its morning appearance. Φαοσφόρος (Phaosphoros) and Φαεσφόρος (Phaesphoros) are forms of the same name in some Greek dialects. This celestial object was named when stars and planets were not always distinguished with modern precision. Another Greek name for the Morning Star is Heosphoros (Greek Ἑωσφόρος Heōsphoros), meaning "Dawn-Bringer". The form Eosphorus is sometimes met in English, as if from Ἠωσφόρος (Ēōsphoros), which is not actually found in Greek literature, but would be the form that Ἑωσφόρος would have in some dialects. As an adjective, the Greek word φωσφόρος is applied in the sense of "light-bringing" to, for instance, the dawn, the god Dionysos, pine torches, the day; and in the sense of "torch-bearing" as an epithet of several god and goddesses, especially Hecate but also of Artemis/Diana and Hephaestus. The Latin word lucifer, corresponding to Greek φωσφόρος, was used as a name for the morning star and thus appeared in the Vulgate translation of the Hebrew word הֵילֵל (helel), meaning Venus as the brilliant, bright or shining one, in Isaiah 14:12, where the Septuagint Greek version uses, not φωσφόρος, but ἑωσφόρος. As a translation of the same Hebrew word the King James Version gave "Lucifer", a name often misunderstood as a reference to Satan. Modern translations of the same passage render the Hebrew word instead as "morning star", "daystar", "shining one" or "shining star". In Revelation 22:16, Jesus is referred to as the morning star, but not as lucifer in Latin, nor as φωσφόρος in the original Greek text, which instead has ὁ ἀστὴρ ὁ λαμπρὸς ὁ πρωϊνός (ho astēr ho lampros ho prōinos), literally: the star, the shining one, the dawn. In the Vulgate Latin text of 2 Peter 1:19 the word "lucifer" is used of the morning star in the phrase "until the day dawns and the morning star rises in your hearts", the corresponding Greek word being φωσφόρος.
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  • 31 Oct 2022
Topic Review
Serotonin
Serotonin (5-hydroxytryptamine, 5-HT) plays two important roles in humans—one central and the other peripheral—depending on the location of the 5-HT pools of on either side of the blood-brain barrier. In the central nervous system it acts as a neurotransmitter, controlling such brain functions as autonomic neural activity, stress response, body temperature, sleep, mood and appetite. This role is very important in intensive care, as in critically ill patients multiple serotoninergic agents like opioids, antiemetics and antidepressants are frequently used. High serotonin levels lead to altered mental status, deliria, rigidity and myoclonus, together recognized as serotonin syndrome. In its role as a peripheral hormone, serotonin is unique in controlling the functions of several organs. In the gastrointestinal tract it is important for regulating motor and secretory functions. Apart from intestinal motility, energy metabolism is regulated by both central and peripheral serotonin signaling. It also has fundamental effects on hemostasis, vascular tone, heart rate, respiratory drive, cell growth and immunity. Serotonin regulates almost all immune cells in response to inflammation, following the activation of platelets. 
  • 5.3K
  • 18 May 2021
Topic Review
Olive Tree (Religious Movement)
Olive Tree is the most common English name of a new religious movement founded in South Korea by Park Tae Son (한국예박태선). The movement was originally known in Korea as Jesus Christ Congregation Revival Association of Korea (한국예수교전도관부흥협회) and later as The Church of Heavenly Father (Cheonbugyo, 천부교). In a revised 2009 version of his 1996 doctoral dissertation on the history of Korean Pentecostalism, pastor Young Hoon Lee called the Olive Tree “the fastest growing and largest of the Korean syncretistic religions during the 1950s and 1960s,” although he noted it had become “largely insignificant” by the end of the 20th century. The Olive Tree is regarded as a cult by mainline Christian denominations in Korea, and it has been argued that combating the Olive Tree was a main reason for the emergence of an organized anti-cult movement in South Korea.
  • 5.3K
  • 25 Nov 2022
Topic Review
Cinéma Pur
Cinéma Pur (French for "Pure Cinema") was an avant-garde film movement begun by filmmakers, like René Clair, who "wanted to return the medium to its elemental origins" of "vision and movement."
  • 5.3K
  • 09 Nov 2022
Topic Review
Natural Preservatives for Fish
Fish is extremely perishable as a result of rapid microbial growth naturally present in fish or from contamination. Synthetic preservatives are widely used in fish storage to extend shelf life and maintain quality and safety. Natural preservatives from microorganisms, plants, and animals have been shown potential in replacing the chemical antimicrobials. Bacteriocins and organic acids from bacteria showed good antimicrobial activities against spoilage bacteria. Plant-derived antimicrobials could prolong fish shelf life and decrease lipid oxidation. Animal-derived antimicrobials also have good antimicrobial activities.
  • 5.3K
  • 25 Jun 2021
Topic Review
Diamond DA40
The Diamond DA40 Star is an Austrian four-seat, single-engine, light aircraft constructed from composite materials. Built in both Austria and Canada, it was developed as a four-seat version of the earlier DA20 by Diamond Aircraft Industries.
  • 5.3K
  • 04 Nov 2022
Topic Review
Carbon Dots: Synthesis and Properties
Carbon dots (CDs) are zero-dimensional optically active carbon-based nanomaterials with a size of less than 10 nm. The material property of the CD is largely linked to the various bottom-up & top-down synthesis approaches, including surface passivation and functionalization, and the carbon precursors. The CDs can be engineered to enhance the chemical and physical functional properties by doping with heteroatom such as nitrogen, phosphorus, sulfur, fluorine, and boron. Because of its various advantageous properties, CDs are utilized in the field of chemical/biological sensing, bioimaging, and drug delivery. These nanosized CDs can change their light emission properties in response to various external stimuli such as pH, temperature, pressure, and light. The CD’s remarkable stimuli-responsive smart material properties have recently stimulated massive research interest for their exploitation to develop various sensor platforms. 
  • 5.3K
  • 16 Mar 2021
Topic Review
WordNet
WordNet is a lexical database of semantic relations between words in more than 200 languages. WordNet links words into semantic relations including synonyms, hyponyms, and meronyms. The synonyms are grouped into synsets with short definitions and usage examples. WordNet can thus be seen as a combination and extension of a dictionary and thesaurus. While it is accessible to human users via a web browser, its primary use is in automatic text analysis and artificial intelligence applications. WordNet was first created in the English language and the English WordNet database and software tools have been released under a BSD style license and are freely available for download from that WordNet website.
  • 5.3K
  • 11 Nov 2022
Topic Review
Democratic Deficit in the European Union
The notion of a democratic deficit within the European Union (EU) is the idea that the governance of the EU lacks democratic legitimacy. This led in part to an elected European Parliament being created in 1979 and given the power to approve or reject EU legislation. Since then, usage of the term has broadened to describe newer issues facing the European Union. However voter turnout has fallen consecutively at the seven elections since the first election in 1979 and voter turnout in the 2014 election stood at 42.54% of all European voters. This is the lowest of any national election in the 28 countries of the European Union where turnout at national elections averages 68% across the EU. Opinions differ as to whether the EU has a democratic deficit or how it should be remedied if it exists. Pro-Europeans (i.e. those in favour of the EU) argue that the European Union should reform its institutions to make them more accountable, while Eurosceptics argue that the EU should reduce its powers and often campaign for withdrawal from the EU.
  • 5.3K
  • 23 Nov 2022
Topic Review
Nutraceuticals in Various Diseases
Nutraceuticals are the nourishing components (hybrid of nutrition and pharmaceuticals) that are biologically active and possess capability for maintaining optimal health and benefits. These products play a significant role in human health care and its endurance, most importantly for the future therapeutic development. Nutraceuticals have received recognition due to their nutritional benefits along with therapeutic effects and safety profile. Nutraceuticals are globally growing in the field of services such as health care promotion, disease reduction, etc.
  • 5.3K
  • 13 Dec 2022
Topic Review
Fatty Acid Synthase
Fatty acid synthase is a multi-enzyme protein that involves in fatty acid synthesis. It's main function is to synthesise palmitate, a 16-carbon long chain saturated fatty acid from acetyl-CoA and malonyl-CoA, in the presence of NADPH.
  • 5.3K
  • 01 Sep 2020
Topic Review
Adaptation of Seed Germination
Environmental conditions are the basis of plant reproduction and are the critical factors controlling seed dormancy and germination. Global climate change is currently affecting environmental conditions and changing the reproduction of plants from seeds. Disturbances in germination will cause disturbances in the diversity of plant communities. Models developed for climate change scenarios show that some species will face a significant decrease in suitable habitat area. Dormancy is an adaptive mechanism that affects the probability of survival of a species. The ability of seeds of many plant species to survive until dormancy recedes and meet the requirements for germination is an adaptive strategy that can act as a buffer against the negative effects of environmental heterogeneity. The influence of temperature and humidity on seed dormancy status underlines the need to understand how changing environmental conditions will affect seed germination patterns. 
  • 5.3K
  • 06 Feb 2021
Topic Review
Devices Using Qualcomm Snapdragon Systems-on-Chip
This is a list of devices using Qualcomm Snapdragon chips. Snapdragon is a family of mobile system on a chip (SoC) made by Qualcomm for use in smartphones, tablets, and smartbook devices.
  • 5.3K
  • 07 Nov 2022
Topic Review
1888–1893 Uprisings of Hazaras
The 1888–1893 Uprisings of Hazaras occurred in the aftermath of the Second Anglo-Afghan War, when the Afghan Emirate signed the Treaty of Gandamak. Afghan King Abdur Rahman Khan set out to bring the Turkistan, Hazarajat and Kafiristan regions under his control. He launched several campaigns in the Hazarajat due to resistance from the Hazaras, and he conducted a widespread campaign on its population. Over sixty percent of the total Hazara population was killed with some being displaced by fleeing to Quetta and other adjoining areas. The Hazara land was distributed among loyalist villagers of nearby non-Hazaras. Moreover, many Hazaras were sold in the markets of Kabul and Qandahar. Abdur Rahman arrested Syed Jafar, chief of the Sheikh Ali Hazara tribe, and jailed him in Mazar-e-Sharif. The repression after the uprising has been called the most significant case of genocide or ethnic cleansing in the history of modern Afghanistan.
  • 5.3K
  • 05 Dec 2022
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