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HandWiki is the world's largest wiki-style encyclopedia dedicated to science, technology and computing. It allows you to create and edit articles as long as you have external citations and login account. In addition, this is a content management environment that can be used for collaborative editing of original scholarly content, such as books, manuals, monographs and tutorials.

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Periadenitis Mucosa Necrotica Recurrens
Aphthous stomatitis, or recurrent aphthous stomatitis (RAS), is a common condition characterized by the repeated formation of benign and non-contagious mouth ulcers (aphthae) in otherwise healthy individuals. The informal term canker sore is also used, mainly in North America, although it may also refer to other types of mouth ulcers. The cause is not completely understood but involves a T cell-mediated immune response triggered by a variety of factors which may include nutritional deficiencies, local trauma, stress, hormonal influences, allergies, genetic predisposition, certain foods, dehydration, some food additives, or some hygienic chemical additives like SDS (common in toothpaste). These ulcers occur periodically and heal completely between attacks. In the majority of cases, the individual ulcers last about 7–10 days, and ulceration episodes occur 3–6 times per year. Most appear on the non-keratinizing epithelial surfaces in the mouth – i.e. anywhere except the attached gingiva, the hard palate and the dorsum of the tongue – although the more severe forms, which are less common, may also involve keratinizing epithelial surfaces. Symptoms range from a minor nuisance to interfering with eating and drinking. The severe forms may be debilitating, even causing weight loss due to malnutrition. The condition is very common, affecting about 20% of the general population to some degree. The onset is often during childhood or adolescence, and the condition usually lasts for several years before gradually disappearing. There is no cure, and treatments such as corticosteroids aim to manage pain, reduce healing time and reduce the frequency of episodes of ulceration.
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  • 01 Dec 2022
Topic Review
Values in Action Inventory of Strengths
The VIA Inventory of Strengths (VIA-IS), formerly known as the "Values in Action Inventory," is a proprietary psychological assessment measure designed to identify an individual's profile of character strengths. It was created by Christopher Peterson and Martin Seligman, well-known researchers in the field of positive psychology, in order to operationalize their Character Strengths and Virtues Handbook (CSV). The CSV is the positive psychology counterpart to the Diagnostic and Statistical Manual of Mental Disorders (DSM) used in traditional psychology. Unlike the DSM, which scientifically categorizes human deficits and disorders, the CSV classifies positive human strengths. Moreover, the CSV is centered on helping people recognize and build upon their strengths. This aligned with the overall goal of the positive psychology movement, which aims to make people's lives more fulfilling, rather than simply treating mental illness. Notably, the VIA-IS is the tool by which people can identify their own positive strengths and learn how to capitalize on them.
  • 4.1K
  • 01 Dec 2022
Topic Review
Temperament
In psychology, temperament broadly refers to consistent individual differences in behavior that are biologically based and are relatively independent of learning, system of values and attitudes. Some researchers point to association of temperament with formal dynamical features of behavior, such as energetic aspects, plasticity, sensitivity to specific reinforcers and emotionality. Temperament traits (such as Neuroticism, Sociability, Impulsivity, etc.) remain its distinct patterns in behavior throughout adulthood but they are most noticeable and most studied in children. Babies are typically described by temperament, but longitudinal research in the 1920s began to establish temperament as something which is stable across the lifespan. Although a broad definition of temperament is agreed upon, many classification schemes for temperament have been developed, and there is no consensus. Historically, the concept of temperament (originally "temperamentums" in Latin means "mixtures") was a part of the theory of the four humors, with their corresponding four temperaments. This historical concept was explored by philosophers, psychologists, psychiatrists and psycho-physiologists from very early times of psychological science, with theories proposed by Immanuel Kant, Hermann Lotze, Ivan Pavlov, Carl Jung, Gerardus Heymans among others. More recently, scientists seeking evidence of a biological basis of personality have further examined the relationship between temperament and neurotransmitter systems and character (defined in this context as developmental aspects of personality). However, biological correlations have proven hard to confirm.
  • 2.2K
  • 06 Dec 2022
Topic Review
Jackson Family
The Jackson family is an important and influential American family of singers that has garnered prominence in the music industry, originated from Gary, Indiana. Performing as members of The Jackson 5 and as solo artists, the children of Joseph Walter and Katherine Esther Jackson were very successful in the field of popular music from the late 1960s onwards. As a group, the eldest sons Jackie, Tito, Jermaine, Marlon, Michael, and later with the inclusion of Randy. The members who managed to be solo icons in music are Michael Jackson and Janet Jackson. The Jackson 5 became known as the "First Family of Soul" (a title first held by the Five Stairsteps). The continued success of Michael and Janet's careers as solo artists led the Jacksons to become known as the "Royal Family of Pop". All nine of the Jackson siblings have gold records to their credits with La Toya holding the distinction of being the first Jackson sister to attain one (awarded by France's SNEP for "Reggae Night", a song she co-wrote for Jimmy Cliff), and now to Janet Jackson for being the first black woman to receive the Billboard Icon Award. The Jackson family has been the subject of controversy linked to the Jordan Chandler Case. But the most controversial facts of Jackson's private life are accusations made by his sons against family patriarch Joseph Jackson claiming that he was harassed by his father as a child. Despite these circumstances and other problems, the Jacksons continued to be one of the most influential families in the United States and in recent years some family members have been honored for their work; in 1997 The Jackson 5 was inducted to the Rock and Roll Hall of Fame. Michael would follow the group to the hall in 2001. The Jacksons, Michael and Janet all received stars on the Hollywood Walk of Fame in 1980, 1984 and 1990 respectively. Joseph was recognized as "the best musical businessman of all time" by the city of Cleveland in 2002. In 2009 a new series from A&E entitled The Jacksons: A Family Dynasty premiered documenting the Jackson brothers dealing with the sudden loss of Michael and preparing for a Jackson 5 Reunion tour. The most popular member of the Jackson family was Michael Jackson, known as the King of Pop and died in June 2009, due to a cardiac arrest.
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  • 01 Dec 2022
Topic Review
Govardhana Sila
A Govardhana Shila is rock from the Govardhan Hill in Braj. Govardhan Hill holds a unique position in Hindu scriptures related to Krishna, the land called Vrij where He was born. Known as Govardhan or Giriraj and being the sacred center of Braj, it is identified as a natural form of Krishna. Indian art overwhelmingly prefers the iconic image, but some aniconism does occur in folk worship, early Buddhism, Shiva's Banalinga, and Vishnu's Saligrama Sila (murthi)). They have solar significance, and their use in worship predates the Hindu period in India . The stone is usually brown in color. Govardhan, a very famous place of Hindu pilgrimage, is located 26 km west of Mathura (154 km from New Delhi) on the state highway to Deeg. Govardhan is located on a narrow sandstone hill known as Giriraj which is about 8 km in length. When Chaitanya Mahaprabhu did parikrama (circumambulation) of Govardhana Hill while visiting Vrindavana in 1515 AD, he did not walk on the hill because he considered Govardhana as non-different from Lord Krishna. Therefore, traditionally Vaishnavas don’t step on Govardhan hill.
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  • 01 Dec 2022
Topic Review
Focke-Wulf Fw 189
The Focke-Wulf Fw 189 Uhu ("Eagle Owl") is a German twin-engine, twin-boom, three-seat tactical reconnaissance and army cooperation aircraft. It first flew in 1938 (Fw 189 V1), entered service in 1940 and was produced until mid-1944. In addition, Focke-Wulf used this airframe in response to a tender request by the RLM for a dedicated ground-attack airplane, and later submitted an armored version for trials. However, the Henschel Hs 129 was selected instead.
  • 2.2K
  • 01 Dec 2022
Topic Review
Ten Rays Model
The ten-ray model is a model applied to the transmissions in the urban area, to generate a model of ten rays typically four rays more are added to the six rays model, these are ([math]\displaystyle{ R3 }[/math] and [math]\displaystyle{ R4 }[/math] bouncing on both sides of the wall); This incorporate paths from one to three reflections: specifically, there is the LOS (Line of sight), GR (ground reflected), SW (single-wall reflected), DW (double-wall reflected), TW (triple-wall reflected), WG (wall-ground reflected) and GW (ground-wall reflected paths). Where each one of the paths bounces on both sides of the wall. Experimentally, it has been demonstrated that the ten ray model simulates or can represent the propagation of signals through a dielectric canyon, in it which the rays that travel from a transmitter point to a receiver point bounce many times. As example for this model it is assume: a rectilinear free space with two walls, one upper and the other lower, from which two vertical bases are positioned at their ends, these are the transmitting and receiving antennas that it’s locate in such a way that their heights don’t surpass the limits of the top wall; Achieved this the structure acts as free space for its functioning similar to that of a dielectric canyon of signals propagation, since the rays transmitted from the transmitting antenna will collide each side of the upper and lower walls infinity of times (for this example up to 3 reflections) until reaching the receiving antenna. During the course of the rays for each reflection they suffer, part of the energy of the signal is dissipated in each reflection, normally after the third reflection of said ray its resulting component which is a retro-reflected ray is insignificant with a negligible energy.
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  • 01 Dec 2022
Topic Review
Psychology of Social Class
The psychology of social class is a branch of social psychology dedicated to understanding how social class affects individual's thoughts, feelings, and behaviors. While social class has long been a subject of analysis in fields such as sociology, political science, anthropology, medicine and epidemiology, its emergence within the field of psychology is much more recent.
  • 2.3K
  • 01 Dec 2022
Topic Review
Orbital Cellulitis
Orbital cellulitis is inflammation of eye tissues behind the orbital septum. It is most commonly caused by an acute spread of infection into the eye socket from either the adjacent sinuses or through the blood. It may also occur after trauma. When it affects the rear of the eye, it is known as retro-orbital cellulitis. It should not be confused with periorbital cellulitis, which refers to cellulitis anterior to the septum. Without proper treatment, orbital cellulitis may lead to serious consequences, including permanent loss of vision or even death.
  • 1.1K
  • 01 Dec 2022
Topic Review
Pointman (User Interface)
Pointman is a seated user interface for controlling one's avatar in a 3D virtual environment. It combines head tracking, a gamepad, and sliding foot pedals to provide positional control over many aspects of the avatar's posture. Pointman was developed by the US Naval Research Laboratory (NRL) to support the use of dismounted infantry simulation for USMC training and mission rehearsal. NRL's goal in developing Pointman was to extend the range and precision of actions supported by virtual simulators, to better represent what infantrymen can do.
  • 527
  • 01 Dec 2022
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