Your browser does not fully support modern features. Please upgrade for a smoother experience.
Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort by:
Most Viewed Latest Alphabetical (A-Z) Alphabetical (Z-A)
Filter:
All Topic Review Biography Peer Reviewed Entry Video Entry
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.
  • 10.9K
  • 22 Jun 2021
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."
  • 10.9K
  • 22 Nov 2022
Biography
Kevin Systrom
Kevin York Systrom (born December 30, 1983)[1] is an American entrepreneur and programmer, best known as the co‑founder of Instagram along with Mike Krieger. Systrom was born in 1983 in Holliston, Massachusetts. He is the son of Diane (Pels), a marketing executive at Zipcar, who also worked at Monster and Swapit during the first dotcom bubble,[2] and Douglas Systrom, Vice President in Human
  • 10.8K
  • 30 Nov 2022
Topic Review
Sophia (Gnosticism)
Sophia (Koinē Greek: Σοφíα "Wisdom", Coptic: ⲧⲥⲟⲫⲓⲁ "the Sophia") is a major theme, along with Knowledge (γνῶσις gnosis, Coptic sooun), among many of the early Christian knowledge-theologies grouped by the heresiologist Irenaeus as gnostikoi (γνωστικοί), ‘knowing’ or ‘men that claimed to have deeper wisdom’. Gnosticism is a 17th-century term expanding the definition of Irenaeus' groups to include other syncretic and mystery religions. In Gnosticism, Sophia is a feminine figure, analogous to the human soul but also simultaneously one of the feminine aspects of God. Gnostics held that she was the syzygy (female twin divine Aeon) of Jesus (i.e. the Bride of Christ), and Holy Spirit of the Trinity. She is occasionally referred to by the Hebrew equivalent of Achamōth (Ἀχαμώθ, Hebrew: חכמה‎ chokhmah) and as Prunikos (Προύνικος). In the Nag Hammadi texts, Sophia is the lowest Aeon, or anthropic expression of the emanation of the light of God. She is considered to have fallen from grace in some way, in so doing creating or helping to create the material world.
  • 10.8K
  • 23 Nov 2022
Topic Review
Pinophyta
The Pinophyta, also known as Coniferophyta or Coniferae, or commonly as conifers, are a division of vascular land plants containing a single extant class, Pinopsida. They are gymnosperms, cone-bearing seed plants. All extant conifers are perennial woody plants with secondary growth. The great majority are trees, though a few are shrubs. Examples include cedars, Douglas firs, cypresses, firs, junipers, kauri, larches, pines, hemlocks, redwoods, spruces, and yews. As of 1998, the division Pinophyta was estimated to contain eight families, 68 genera, and 629 living species. Although the total number of species is relatively small, conifers are ecologically important. They are the dominant plants over large areas of land, most notably the taiga of the Northern Hemisphere, but also in similar cool climates in mountains further south. Boreal conifers have many wintertime adaptations. The narrow conical shape of northern conifers, and their downward-drooping limbs, help them shed snow. Many of them seasonally alter their biochemistry to make them more resistant to freezing. While tropical rainforests have more biodiversity and turnover, the immense conifer forests of the world represent the largest terrestrial carbon sink. Conifers are of great economic value for softwood lumber and paper production.
  • 10.8K
  • 21 Oct 2022
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.
  • 10.8K
  • 21 Nov 2022
Topic Review
Almond Kernel
This entry is about Non-Lipid Components and Minor Fat-Soluble Bioactive Compounds of Almond Kernel.
  • 10.8K
  • 08 Dec 2020
Topic Review
Information and Communication Technology (ICT) in Construction
Information and communication technology (ICT) is one of the important factors that support construction project performance. 
  • 10.8K
  • 28 Mar 2022
Topic Review
Paper
Paper is a thin material produced by pressing together moist fibres of cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets. It is a versatile material with many uses, including writing, printing, packaging, cleaning, decorating, and a number of industrial and construction processes. Papers are essential in legal or non-legal documentation. The pulp papermaking process is said to have been developed in China during the early 2nd century CE, possibly as early as the year 105 CE, by the Han court eunuch Cai Lun, although the earliest archaeological fragments of paper derive from the 2nd century BCE in China. The modern pulp and paper industry is global, with China leading its production and the United States right behind it.
  • 10.8K
  • 30 Oct 2022
Topic Review
Venus in Culture
Venus, as one of the brightest objects in the sky, has been known since prehistoric times and has been a major fixture in human culture for as long as records have existed. As such, it has a prominent position in human culture, religion, and myth. It has been made sacred to gods of many cultures, and has been a prime inspiration for writers and poets as the morning star and evening star.
  • 10.8K
  • 14 Nov 2022
Topic Review
Jews
Jews (Hebrew: יְהוּדִים‎ ISO 259-2 Yehudim, Israeli pronunciation [jehuˈdim]) or Jewish people are members of an ethnoreligious group and a nation originating from the Israelites and Hebrews of historical Israel and Judah. Jewish ethnicity, nationhood, and religion are strongly interrelated, as Judaism is the ethnic religion of the Jewish people, although its observance varies from strict to none. Jews originated as an ethnic and religious group in the Middle East during the second millennium BCE, in the part of the Levant known as the Land of Israel. The Merneptah Stele appears to confirm the existence of a people of Israel somewhere in Canaan as far back as the 13th century BCE (Late Bronze Age). The Israelites, as an outgrowth of the Canaanite population, consolidated their hold with the emergence of the kingdoms of Israel and Judah. Some consider that these Canaanite sedentary Israelites melded with incoming nomadic groups known as 'Hebrews'. Though few sources mention the exilic periods in detail, the experience of diaspora life, from the Babylonian captivity and exile to the Roman occupation and exile, and the historical relations between Jews and their homeland thereafter, became a major feature of Jewish history, identity and memory. In the millennia following, Jewish diaspora communities coalesced into three, major ethnic subdivisions according to where their ancestors settled: Ashkenazim (Central and Eastern Europe), Sephardim (initially in the Iberian Peninsula), and Mizrahim (Middle East and North Africa). Prior to World War II, the worldwide Jewish population reached a peak of 16.7 million, representing around 0.7 percent of the world population at that time. Approximately 6 million Jews were systematically murdered during the Holocaust. Since then the population has slowly risen again, and (As of 2018) was estimated at 14.6–17.8 million by the Berman Jewish DataBank, less than 0.2 percent of the total world population.[note 1] The modern State of Israel is the only country where Jews form a majority of the population. It defines itself as a Jewish and democratic state in the Basic Laws, Human Dignity and Liberty in particular, which is based on the Declaration of Independence. Israel's Law of Return grants the right of citizenship to Jews who have expressed their desire to settle in Israel. Despite their small percentage of the world's population, Jews have significantly influenced and contributed to human progress in many fields, both historically and in modern times, including philosophy, ethics, literature, politics, business, fine arts and architecture, music, theatre and cinema, medicine, and science and technology, as well as religion; Jews authored the Bible, founded Early Christianity and had a profound influence on Islam. Jews have also played a significant role in the development of Western Civilization.
  • 10.8K
  • 21 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. 
  • 10.8K
  • 17 Sep 2021
Topic Review
Psychological Effects of Method Acting
Method acting is employed by actors to evoke realistic emotions into their performance by drawing on personal experiences. Raymond Hamden, doctor of Clinical and Forensic Psychology, defines the purpose of method acting as “compartmentalizing their own feelings while playing another character [so] they could bring the emotions of that personal feeling to cry if they needed to with that character.” However, when these emotions are not compartmentalized, they can encroach on other facets of life, often seeming to disrupt the actor’s psyche. This occurs as the actor delves into previous emotional experiences, be they joyful or traumatic. The psychological effects, like emotional fatigue, comes when suppressed or unresolved raw emotions are unburied to add to the character, not just from the employing personal emotions in performance. The question becomes whether the actor calls up resolved or unresolved emotions in their acting.
  • 10.8K
  • 16 Nov 2022
Topic Review
Last Glacial Period
The last glacial period occurred from the end of the Eemian interglacial to the end of the Younger Dryas, encompassing the period c. 115,000 – c. 11,700 years ago. This most recent glacial period is part of a larger pattern of glacial and interglacial periods known as the Quaternary glaciation extending from c. 2,588,000 years ago to present. The definition of the Quaternary as beginning 2.58 Ma is based on the formation of the Arctic ice cap. The Antarctic ice sheet began to form earlier, at about 34 Ma, in the mid-Cenozoic (Eocene–Oligocene extinction event). The term Late Cenozoic Ice Age is used to include this early phase. During this last glacial period there were alternating episodes of glacier advance and retreat. Within the last glacial period the Last Glacial Maximum was approximately 22,000 years ago. While the general pattern of global cooling and glacier advance was similar, local differences in the development of glacier advance and retreat make it difficult to compare the details from continent to continent (see picture of ice core data below for differences). Approximately 13,000 years ago, the Late Glacial Maximum began. The end of the Younger Dryas about 11,700 years ago marked the beginning of the Holocene geological epoch, which includes the Holocene glacial retreat. From the point of view of human archaeology, the last glacial period falls in the Paleolithic and early Mesolithic periods. When the glaciation event started, Homo sapiens were confined to lower latitudes and used tools comparable to those used by Neanderthals in western and central Eurasia and by Homo erectus in Asia. Near the end of the event, Homo sapiens migrated into Eurasia and Australia. Archaeological and genetic data suggest that the source populations of Paleolithic humans survived the last glacial period in sparsely wooded areas and dispersed through areas of high primary productivity while avoiding dense forest cover. The retreat of the glaciers 15,000 years ago allowed groups of humans from Asia to migrate to the Americas.
  • 10.8K
  • 21 Oct 2022
Topic Review
Commodity Fetishism
Commodity fetishism is a concept introduced by Karl Marx in his critique of political economy, particularly in his seminal work "Capital, Volume I." The term is used to describe a phenomenon where the social relationships among people are obscured and displaced by the relationships between commodities and the value they represent in a capitalist society. In a capitalist system, commodities are goods or services produced for exchange in the market. Marx argued that the social relations involved in the production and exchange of commodities become mystified, and the commodities themselves take on a quasi-magical quality. This fetishism arises when people attribute inherent value or power to commodities, seeing them as possessing qualities independent of the social relations that produced them.
  • 10.8K
  • 25 Jan 2024
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.
  • 10.7K
  • 30 Sep 2022
Topic Review
Demonic Possession
Demonic possession is the belief that a person's actions are controlled by an alien spirit, demon, or entity. Symptoms of demonic possession commonly claimed by victims include missing memories, perceptual distortions, loss of a sense of control, and hyper-suggestibility. Erika Bourguignon found in a study of 488 societies worldwide, seventy-four percent believe in possession by spirits, with the highest numbers of beliefs in Pacific cultures and the lowest incidence among Native Americans of both North and South America.
  • 10.7K
  • 25 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.
  • 10.7K
  • 12 Jan 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.
  • 10.7K
  • 03 Mar 2023
Topic Review
Botulinum Neurotoxin Injection Targeting the Platysma Muscle
The platysma muscle is a thin superficial muscle that covers the entire neck and lower part of the face. The platysma muscle is the primary target muscle for botulinum neurotoxin injection therapy aimed at treating platysmal band and lower facial lifting. In the procedure of botulinum neurotoxin injection therapy, a lack of knowledge of the anatomy of the platysma muscle and the properties of botulinum neurotoxin can lead to side effects such as dysphagia, dysphonia, and weakness of the neck muscles. Anatomically safe injection sites have been proposed for the platysma muscle, and the appropriate injection technique has been reviewed.
  • 10.7K
  • 20 Dec 2022
  • Page
  • of
  • 2794
Featured Entry Collections
>>

Featured Reprints

>>
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Encyclopedia of Engineering
Encyclopedia of Social Sciences
Encyclopedia of Medieval Royal Iconography
Academic Video Service
Feedback

Quick Survey

Encyclopedia MDPI is conducting a targeted survey to identify the specific barriers hindering efficient research. We invite you to spend 3 minutes defining the priorities for our next generation of structured knowledge tools.
Take Survey