National Snow & Ice Data Center. Accessed February 14, 2019 at <nsidc.org> “Presently, 10 percent of land area on Earth is covered with glacial ice, including glaciers, ice caps, and the ice sheets of Greenland and Antarctica. Glacierized areas cover over 15 million square kilometers (...
Department of Education (ED... C Scott - 《Center on Education Policy》 被引量: 4发表: 2009年 Bush Team Shies from Clinton Landmine Policy In its ongoing review of U.S. landmine policy, the Bush administration appears to be distancing itself from then-President Bill Clinton's statement ...
One part of the homeless population that is particularly difficult to count consists of the “throwaway” youths who have been cast of their homes. The Elementary School Center in New York City estimates that there are 1.5 million of them many of whom are not counted as children because they...
As of July 1, 2023 Supplementary notes Excludes Armed Forces overseas. Data has been calculated by Statista using using single year age estimates and the referenced table. Statista used generational definitions published byPew Research Center.
1.TheendoftheCivilWar—1880 2.1890---19203.1920—19604.Theendofthe1960s—now eastwestruralareascitiessouthotherareasNortheast/centralnorthwest/south Notes:outflow流出ofcityresidents居民fromthecore核心citiestothesuburbs郊外 ThemainpopulationcenteroftheUnitedStateshasconsistently一贯的shifted转变移动westwardand...
- 《U.s.fish & Wildlife Service Northern Prairie Wildlife Research Center》 被引量: 141发表: 1992年 Population Dynamics of the Glaucous-Winged Gull I examined demographic traits of the glaucous-winged gull (Larus glaucescens) on Protection Island, Washington, from 1983 to 1985 and analyzed ...
12: The Future Asian Population of the United States Recent increases in the level of immigration to the US from Asian countries have been dramatic. The 140% growth in the number of Asian Americans between 1... LF Bouvier,AJ Agresta - 《Center for Migration Studies Special Issues》 被引量...
Trump Invoked All Corners of American History. How Might He Use Them to Build His New 'Golden Age'? In summoning people to his vision for the future, Donald Trump assembled a dizzying collage of time-honored and time-worn American myths, tropes and ideals ...
Publications 120 Scott, Darren M. McMaster University, Hamilton, Canada Citations 4,341 h-index 34 Publications 48 Sirén, Anu VIVE – The Danish Center of Social Science Research, Copenhagen, Denmark Citations 1,251 h-index 21 Publications 16...
Apart from the core county, flows from the same city correspond to about 50% of the inflow of people in the counties, presenting a slightly positive correlation with their distance from the city center (Fig. 3A). The low percentage for the core county indicates that it is not the major ...