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Missing Women
The term "missing women" indicates a shortfall in the number of women relative to the expected number of women in a region or country. It is most often measured through male-to-female sex ratios, and is theorized to be caused by sex-selective abortions, female infanticide, and inadequate healthcare and nutrition for female children. It is argued that technologies that enable prenatal sex selection, which have been commercially available since the 1970s, are a large impetus for missing female children. The phenomenon was first noted by the Indian Nobel Prize-winning economist Amartya Sen in an essay in ''The New York Review of Books'' in 1990, and expanded upon in his subsequent academic work. Sen originally estimated that more than a hundred million women were "missing" or "gone". Later researchers found differing numbers, with most recent estimates around 90–101 million women. These effects are concentrated in countries typically in Asia (with the largest numbers from India and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sex Ratio
The sex ratio (or gender ratio) is usually defined as the ratio of males to females in a population. As explained by Fisher's principle, for evolutionary reasons this is typically about 1:1 in species which reproduce sexually. Many species deviate from an even sex ratio, either periodically or permanently. Examples include parthenogenic species, periodically mating organisms such as aphids, some eusocial wasps, bees, ants, and termites. The human sex ratio is of particular interest to anthropologists and demographers. In human societies, sex ratios at birth may be considerably skewed by factors such as the age of mother at birth and by sex-selective abortion and infanticide. Exposure to pesticides and other environmental contaminants may be a significant contributing factor as well. As of 2014, the global sex ratio at birth is estimated at 107 boys to 100 girls (1,000 boys per 934 girls).. Types In most species, the sex ratio varies according to the age profile of the populat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revolutions Of 1989
The Revolutions of 1989, also known as the Fall of Communism, was a revolutionary wave that resulted in the end of most communist states in the world. Sometimes this revolutionary wave is also called the Fall of Nations or the Autumn of Nations, a play on the term Spring of Nations that is sometimes used to describe the Revolutions of 1848 in Europe. It also led to the eventual breakup of the Soviet Union—the world's largest communist state—and the abandonment of communist regimes in many parts of the world, some of which were violently overthrown. The events, especially the fall of the Soviet Union, drastically altered the world's balance of power, marking the end of the Cold War and the beginning of the post-Cold War era. The earliest recorded protests were started in Kazakhstan, then part of the Soviet Union, in 1986 with the Jeltoqsan, student demonstrations — the last chapter of these revolutions is considered to be in 1993 when Cambodia United Nations Transition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sri Lanka
Sri Lanka (, ; si, ශ්රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, and southeast of the Arabian Sea; it is separated from the Indian subcontinent by the Gulf of Mannar and the Palk Strait. Sri Lanka shares a maritime border with India and Maldives. Sri Jayawardenepura Kotte is its legislative capital, and Colombo is its largest city and financial centre. Sri Lanka has a population of around 22 million (2020) and is a multinational state, home to diverse cultures, languages, and ethnicities. The Sinhalese are the majority of the nation's population. The Tamils, who are a large minority group, have also played an influential role in the island's history. Other long established groups include the Moors, the Burghers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ansley J
Ansley may refer to: Places *Ansley, Warwickshire is a village in Warwickshire, England. *Ansley, Louisiana, an unincorporated community *Ansley, Nebraska is a village in Custer County, Nebraska, United States. *Ansley Park is a residential neighborhood in Atlanta, Georgia, United States. *Ansley Township, Custer County, Nebraska Names *Ansley (given name) Ansley is a given name. Notable people with the name include: *Ansley B. Borkowski (1898–1992), American lawyer and politician *Ansley Cargill (born 1982), American tennis player *Ansley Constance, Seychellois politician * Ansley J. Coale (1917 ... * Ansley (surname) {{Disambig, Geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Immigration
Immigration is the international movement of people to a destination country of which they are not natives or where they do not possess citizenship in order to settle as permanent residents or naturalized citizens. Commuters, tourists, and other short-term stays in a destination country do not fall under the definition of immigration or migration; seasonal labour immigration is sometimes included, however. As for economic effects, research suggests that migration is beneficial both to the receiving and sending countries. Research, with few exceptions, finds that immigration on average has positive economic effects on the native population, but is mixed as to whether low-skilled immigration adversely affects low-skilled natives. Studies show that the elimination of barriers to migration would have profound effects on world GDP, with estimates of gains ranging between 67 and 147 percent for the scenarios in which 37 to 53 percent of the developing countries' workers migrate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Number Of &
A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers can be represented by symbols, called ''numerals''; for example, "5" is a numeral that represents the number five. As only a relatively small number of symbols can be memorized, basic numerals are commonly organized in a numeral system, which is an organized way to represent any number. The most common numeral system is the Hindu–Arabic numeral system, which allows for the representation of any number using a combination of ten fundamental numeric symbols, called digits. In addition to their use in counting and measuring, numerals are often used for labels (as with telephone numbers), for ordering (as with serial numbers), and for codes (as with ISBNs). In common usage, a ''numeral'' is not clearly distinguished from the ''number'' that it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultrasound
Ultrasound is sound waves with frequency, frequencies higher than the upper audible limit of human hearing range, hearing. Ultrasound is not different from "normal" (audible) sound in its physical properties, except that humans cannot hear it. This limit varies from person to person and is approximately 20 Hertz, kilohertz (20,000 hertz) in healthy young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz. Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasound imaging or sonography is often used in medicine. In the nondestructive testing of products and structures, ultrasound is used to detect invisible flaws. Industrially, ultrasound is used for cleaning, mixing, and accelerating chemical processes. Animals such as bats and porpoises use ultrasound for locating Predation, prey and obstacles. History Acoustics, the science of sound, starts as far back as Pyth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Countries By Sex Ratio
The human sex ratio is the comparative number of males with respect to each female in a population. This is a list of sex ratios by country or region. Methodology The table's data is from ''The World Factbook'' unless noted otherwise. It shows the male to female sex ratio by the Central Intelligence Agency of the United States. If there is a discrepancy between ''The World Factbook'' and a country's census data, the latter may be used instead. A ratio above 1, for example 1.1, means there are more males than females (1.1 males for every female). A ratio below 1, for example 0.8, means there are more females than males (0.8 males for every female). A ratio of 1 means there are equal numbers of males and females. Countries See also * List of Chinese administrative divisions by sex ratio * List of states and union territories of India by sex ratio * Missing women References {{DEFAULTSORT:Countries by sex ratio Demographic lists Sex ratio The sex ratio (or gende ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mortality Rate
Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time. Mortality rate is typically expressed in units of deaths per 1,000 individuals per year; thus, a mortality rate of 9.5 (out of 1,000) in a population of 1,000 would mean 9.5 deaths per year in that entire population, or 0.95% out of the total. It is distinct from "morbidity", which is either the prevalence or incidence of a disease, and also from the incidence rate (the number of newly appearing cases of the disease per unit of time). An important specific mortality rate measure is the crude death rate, which looks at mortality from all causes in a given time interval for a given population. , for instance, the CIA estimates that the crude death rate globally will be 7.7 deaths per 1,000 people in a population per year. In a generic form, mortality rates can be seen as calculated using (d/ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sex Ratio Total Population 2
Sex is the trait that determines whether a sexually reproducing animal or plant produces male or female gametes. Male plants and animals produce smaller mobile gametes (spermatozoa, sperm, pollen), while females produce larger ones (ova, often called egg cells). Organisms that produce both types of gametes are called hermaphrodites. During sexual reproduction, male and female gametes fuse to form zygotes, which develop into offspring that inherit traits from each parent. Males and females of a species may have physical similarities (sexual monomorphism) or differences (sexual dimorphism) that reflect various reproductive pressures on the respective sexes. Mate choice and sexual selection can accelerate the evolution of physical differences between the sexes. The terms ''male'' and ''female'' typically do not apply in sexually undifferentiated species in which the individuals are isomorphic (look the same) and the gametes are isogamous (indistinguishable in size and shape), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Social Institutions And Gender Index
The Social Institutions and Gender Index (SIGI) is an index designed to measure the level of discrimination in social institutions, and in doing so measure gender equality. SIGI is a composite indicator of gender equality, introduced by the OECD Development Centre in 2007. It solely focuses on social institutions which are formal and informal laws, social norms and customary practices that impact the roles of men and women. The SIGI is a multifaceted measure that focuses on four dimensions: Discrimination in the family, Restricted physical integrity, Restricted access to productive and financial resources, and Restricted civil liberties. Construction of the Indicator SIGI is based on a selection of indicators from the Gender, Institutions and Development (GID) Database. It specifically draws on the GID's social institutions variables that are grouped into five categories or sub-indices: Family Code, Physical Integrity, Civil Liberties, Son Preference (measured as the in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organisation For Economic Co-operation And Development
The Organisation for Economic Co-operation and Development (OECD; french: Organisation de coopération et de développement économiques, ''OCDE'') is an intergovernmental organization, intergovernmental organisation with 38 member countries, founded in 1961 to stimulate economic progress and world trade. It is a Forum (legal), forum whose member countries describe themselves as committed to democracy and the market economy, providing a platform to compare policy experiences, seek answers to common problems, identify good practices, and coordinate domestic and international policies of its members. The majority of OECD members are High income economy, high-income economies with a very high Human Development Index, Human Development Index (HDI), and are regarded as Developed country, developed countries. Their collective population is 1.38 billion. , the OECD member countries collectively comprised 62.2% of List of countries by GDP (nominal), global nominal GDP (US$49.6 trill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
