|
Generation
A generation is all of the people born and living at about the same time, regarded collectively. It also is "the average period, generally considered to be about 20–30 years, during which children are born and grow up, become adults, and begin to have children." In kinship, ''generation'' is a structural term, designating the parent–child relationship. In biology, ''generation'' also means biogenesis, reproduction, and procreation. ''Generation'' is also a synonym for ''birth/age cohort'' in demographics, marketing, and social science, where it means "people within a delineated population who experience the same significant events within a given period of time." The term ''generation'' in this sense, also known as '' social generations'', is widely used in popular culture and is a basis of sociological analysis. Serious analysis of generations began in the nineteenth century, emerging from an increasing awareness of the possibility of permanent social change and the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intergenerational Conflict
Intergenerationality is interaction between members of different generations.Klimczuk, Andrzej, ''Intergenerationality, Intergenerational Justice, Intergenerational Policies'', n:S. Thompson (ed.), ''Encyclopedia of Diversity and Social Justice'', Rowman & Littlefield, Lanham 2015, pp. 419-423; Lüscher, Kurt, Hoff, Andreas, Klimczuk, Andrzej, Lamura, Giovanni, Renzi, Marta, Oliveira, Paulo d.S., Sánchez, Mariano, Viry, Gil, Widmer, Eric, Neményi, Ágnes, Veress, Enikő, Bjursell, Cecilia, Boström, Ann-Kristin, Rapolienė, Gražina, Mikulionienė, Sarmitė, Oğlak, Sema, Canatan, Ayşe, Vujović, Ana, Svetelšek, Ajda, Gavranović, Nedim, Ivashchenko, Olga, Shipovskaya, Valentina, Lin, Qing, Wang, Xiying, '' Generations, intergenerational relationships, generational policy. A multilingual compendium - Edition 2017'', Universität Konstanz, Konstanz 2017; Sociologists study many intergenerational issues, including equity, conflict, and mobility. Public health researchers and tox ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biogenesis
Spontaneous generation is a Superseded scientific theories, superseded scientific theory that held that living creatures could arise from abiotic component, non-living matter and that such processes were commonplace and regular. It was Hypothesis, hypothesized that certain forms, such as fleas, could arise from inanimate matter such as dust, or that maggots could arise from dead flesh. The doctrine of spontaneous generation was coherently synthesized by the Greek philosopher and naturalist Aristotle, who compiled and expanded the work of Pre-Socratic philosophy, earlier natural philosophers and the various ancient explanations for the appearance of organisms. Spontaneous generation was taken as scientific fact for two millennia. Though challenged in the 17th and 18th centuries by the experiments of the Italian biologists Francesco Redi and Lazzaro Spallanzani, it was not discredited until the work of the French chemist Louis Pasteur and the Irish physicist John Tyndall in the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lost Generation
The Lost Generation was the Demography, demographic Cohort (statistics), cohort that reached early adulthood during World War I, and preceded the Greatest Generation. The social generation is generally defined as people born from 1883 to 1900, coming of age in either the 1900s or the 1910s, and were the first generation to mature in the 20th century. The term is also particularly used to refer to a group of American expatriate writers living in Paris during the 1920s. Gertrude Stein is credited with coining the term, and it was subsequently popularized by Ernest Hemingway, who used it in the Epigraph (literature), epigraph for his 1926 novel ''The Sun Also Rises'': "You are all a lost generation." "Lost" in this context refers to the "disoriented, wandering, directionless" spirit of many of the war's survivors in the early interwar period. In the wake of the Industrial Revolution, Western members of the Lost Generation grew up in societies that were more literate, consumerist, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generation Time
In population biology and demography Demography () is the statistical study of human populations: their size, composition (e.g., ethnic group, age), and how they change through the interplay of fertility (births), mortality (deaths), and migration. Demographic analysis examine ..., generation time is the average time between two consecutive generations in the lineages of a population. In human populations, generation time typically has ranged from 20 to 30 years, with wide variation based on gender and society. Historians sometimes use this to date events, by converting generations into years to obtain rough estimates of time. Definitions and corresponding formulas The existing definitions of generation time fall into two categories: those that treat generation time as a renewal time of the population, and those that focus on the distance between individuals of one generation and the next. Below are the three most commonly used definitions: Time for a population to gro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beat Generation
The Beat Generation was a literary subculture movement started by a group of authors whose work explored and influenced American culture and politics in the post-World War II era. The bulk of their work was published and popularized by members of the Silent Generation in the 1950s, better known as Beatniks. The central elements of Beat culture are the rejection of standard narrative values, making a spiritual quest, the exploration of American and Eastern religions, the rejection of economic materialism, explicit portrayals of the human condition, experimentation with psychedelic drugs, and sexual liberation and exploration. Allen Ginsberg's '' Howl'' (1956), William S. Burroughs' ''Naked Lunch'' (1959), and Jack Kerouac's ''On the Road'' (1957) are among the best-known examples of Beat literature.Charters (1992) ''The Portable Beat Reader''. Both ''Howl'' and ''Naked Lunch'' were the focus of obscenity trials that ultimately helped to liberalize publishing in the United State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kinship
In anthropology, kinship is the web of social relationships that form an important part of the lives of all humans in all societies, although its exact meanings even within this discipline are often debated. Anthropologist Robin Fox says that the study of kinship is the study of what Human, humans do with these basic facts of lifemating, gestation, Parenting, parenthood, socialization, siblingship etc. Human society is unique, he argues, in that we are "working with the same raw material as exists in the animal world, but [we] can conceptualize and categorize it to serve social ends." These social ends include the socialization of children and the formation of basic economic, political and religious groups. Kinship can refer both to the patterns of social relationships themselves, or it can refer to the study of the patterns of social relationships in one or more human cultures (i.e. kinship studies). Over its history, anthropology has developed a number of related concepts an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biology
Biology is the scientific study of life and living organisms. It is a broad natural science that encompasses a wide range of fields and unifying principles that explain the structure, function, growth, History of life, origin, evolution, and distribution of life. Central to biology are five fundamental themes: the cell (biology), cell as the basic unit of life, genes and heredity as the basis of inheritance, evolution as the driver of biological diversity, energy transformation for sustaining life processes, and the maintenance of internal stability (homeostasis). Biology examines life across multiple biological organisation, levels of organization, from molecules and cells to organisms, populations, and ecosystems. Subdisciplines include molecular biology, physiology, ecology, evolutionary biology, developmental biology, and systematics, among others. Each of these fields applies a range of methods to investigate biological phenomena, including scientific method, observation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urbanisation
Urbanization (or urbanisation in British English) is the population shift from rural to urban areas, the corresponding decrease in the proportion of people living in rural areas, and the ways in which societies adapt to this change. It can also mean population growth in urban areas instead of rural ones. It is predominantly the process by which towns and cities are formed and become larger as more people begin to live and work in central areas. Although the two concepts are sometimes used interchangeably, urbanization should be distinguished from urban growth. Urbanization refers to the ''proportion'' of the total national population living in areas classified as urban, whereas urban growth strictly refers to the ''absolute'' number of people living in those areas. It is predicted that by 2050, about 64% of the developing world and 86% of the developed world will be urbanized. This is predicted to generate artificial scarcities of land, lack of drinking water, playgrounds and o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siblings
A sibling is a relative that shares at least one parent with the other person. A male sibling is a brother, and a female sibling is a sister. A person with no siblings is an only child. While some circumstances can cause siblings to be raised separately (such as foster care or adoption), most societies have siblings grow up together. This causes the development of strong emotional bonds, with siblinghood considered a unique type of relationship. The emotional bond between siblings is often complicated and is influenced by factors such as parental treatment, birth order, personality, and personal experiences outside the family. Medically, a full-sibling is a first-degree relative and a half-sibling is a second-degree relative as they are related by 50% and 25%, respectively. Definitions The word ''sibling'' was reintroduced in 1903 in an article in '' Biometrika'', as a translation for the German ''Geschwister'', having not been used since Middle English, specifically 142 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reproduction
Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parent" or parents. There are two forms of reproduction: Asexual reproduction, asexual and Sexual reproduction, sexual. In asexual reproduction, an organism can reproduce without the involvement of another organism. Asexual reproduction is not limited to unicellular organism, single-celled organisms. The cloning of an organism is a form of asexual reproduction. By asexual reproduction, an organism creates a genetically similar or identical copy of itself. The evolution of sexual reproduction is a major puzzle for biologists. The two-fold cost of sexual reproduction is that only 50% of organisms reproduce and organisms only pass on 50% of their genes.John Maynard Smith ''The Evolution of Sex'' 1978. Sexual reproduction typically requires the sexual interaction of two specialized reproductive cells, called gametes, which contain half t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
