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Dahlgren, Va.
Dahlgren is an unincorporated community and census-designated place (CDP) in King George County, Virginia, United States. The population was 2,946 at the time of the 2020 census, up from 2,653 at the 2010 census, and up from 997 in 2000. History Since 1918, Dahlgren has been the site of a U.S. naval base named for Rear Admiral John A. Dahlgren. It was first the "U.S. Naval Proving Ground" but was renamed the "U.S. Naval Weapons Laboratory" after 1950, the "Naval Surface Weapons Center" in 1974, the "Naval Surface Warfare Center" in 1987, and the "U.S. Naval Surface Warfare Center Dahlgren Division (NSWCDD)" around 1990. In 2006, it was renamed "Naval Support Activity-South Potomac (NSA-SP)", with NSWCDD becoming a tenant command of the base. The U.S. Naval Space Surveillance Systems command was located at that base, but that responsibility was transferred to the Air Force in 2004. The AEGIS Training and Readiness Center is currently a tenant command at NSA-SP. The naval base lie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Census-designated Place
A census-designated place (CDP) is a concentration of population defined by the United States Census Bureau for statistical purposes only. CDPs have been used in each decennial census since 1980 as the counterparts of incorporated places, such as self-governing cities, towns, and villages, for the purposes of gathering and correlating statistical data. CDPs are populated areas that generally include one officially designated but currently unincorporated community, for which the CDP is named, plus surrounding inhabited countryside of varying dimensions and, occasionally, other, smaller unincorporated communities as well. CDPs include small rural communities, edge cities, colonias located along the Mexico–United States border, and unincorporated resort and retirement communities and their environs. The boundaries of any CDP may change from decade to decade, and the Census Bureau may de-establish a CDP after a period of study, then re-establish it some decades later. Most unin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dahlgren Center, Virginia
The United States Naval Surface Warfare Center Dahlgren Division (NSWCDD), named for Rear Admiral John A. Dahlgren, is located in King George County, Virginia, in close proximity to the largest fleet concentration area in the Navy. NSWCDD is part of the Naval Surface Warfare Centers under the Naval Sea Systems Command (NAVSEA). NSWCDD was initially established 16 October 1918 as a remote extension of Maryland's Indian Head Proving Ground used for testing naval guns. The Dahlgren site was named the Lower Station, Dahlgren Naval Proving Ground when it first opened. The location on the Potomac River was specifically chosen for the development of a long ballistic test range on the Potomac River, required for the testing of modern, high-powered munitions.http://namdc.ahf.nmci.navy.mil/site%20pages/news/03-29-13_NSF_Dahlgren_profile_2013.pdf The NSWCDD employs approximately 4,700 scientists, engineers and support personnel at the Dalhgren organization and more than 350 at NSWCDD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hispanic (U
The term ''Hispanic'' ( es, hispano) refers to people, cultures, or countries related to Spain, the Spanish language, or Hispanidad. The term commonly applies to countries with a cultural and historical link to Spain and to viceroyalties formerly part of the Spanish Empire following the Spanish colonization of the Americas, parts of the Asia-Pacific region and Africa. Outside of Spain, the Spanish language is a predominant or official language in the countries of Hispanic America and Equatorial Guinea. Further, the cultures of these countries were influenced by Spain to different degrees, combined with the local pre-Hispanic culture or other foreign influences. Former Spanish colonies elsewhere, namely the Spanish East Indies (the Philippines, Marianas, etc.) and Spanish Sahara (Western Sahara), were also influenced by Spanish culture, however Spanish is not a predominant language in these regions. Hispanic culture is a set of customs, traditions, beliefs, and art forms (mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Race (United States Census)
Race and ethnicity in the United States census, defined by the federal Office of Management and Budget (OMB) and the United States Census Bureau, are the Self-concept, self-identified categories of Race and ethnicity in the United States, race or races and ethnicity chosen by residents, with which they most closely identify, and indicate whether they are of Hispanic or Latino (demonym), Latino origin (the only Race and ethnicity in the United States, categories for ethnicity). The racial categories represent a social-political construct for the race or races that respondents consider themselves to be and, "generally reflect a social definition of race recognized in this country." OMB defines the concept of race as outlined for the U.S. census as not "scientific or anthropological" and takes into account "social and cultural characteristics as well as ancestry", using "appropriate scientific methodologies" that are not "primarily biological or genetic in reference." The race cat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Islander (U
Pacific Islanders, Pasifika, Pasefika, or rarely Pacificers are the peoples of the Pacific Islands. As an ethnic/racial term, it is used to describe the original peoples—inhabitants and diasporas—of any of the three major subregions of Oceania (Melanesia, Micronesia, and Polynesia). Melanesians include the Fijians (Fiji), Kanaks ( New Caledonia), Ni-Vanuatu (Vanuatu), Papua New Guineans (Papua New Guinea), Solomon Islanders (Solomon Islands), and West Papuans (Indonesia's West Papua). Micronesians include the Carolinians (Northern Mariana Islands), Chamorros (Guam), Chuukese ( Chuuk), I-Kiribati (Kiribati), Kosraeans (Kosrae), Marshallese (Marshall Islands), Palauans (Palau), Pohnpeians ( Pohnpei), and Yapese (Yap). Polynesians include the New Zealand Māori (New Zealand), Native Hawaiians (Hawaii), Rapa Nui (Easter Island), Samoans (Samoa and American Samoa), Tahitians (Tahiti), Tokelauans (Tokelau), Niueans (Niue), Cook Islands Māori (Cook Islands) and Tonga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asian (U
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Asian may refer to: * Items from or related to the continent of Asia: ** Asian people, people in or descending from Asia ** Asian culture, the culture of the people from Asia ** Asian cuisine, food based on the style of food of the people from Asia ** Asian (cat), a cat breed similar to the Burmese but in a range of different coat colors and patterns * Asii (also Asiani), a historic Central Asian ethnic group mentioned in Roman-era writings * Asian option, a type of option contract in finance * Asyan, a village in Iran See also * * * East Asia * South Asia * Southeast Asia * Asiatic (other) Asiatic refers to something related to Asia. Asiatic may also refer to: * Asiatic style, a term in ancient stylistic criticism associated with Greek writers of Asia Minor * In the context of Ancient Egypt, beyond the borders of Egypt and the cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native American (U
Native Americans or Native American may refer to: Ethnic groups * Indigenous peoples of the Americas, the pre-Columbian peoples of North and South America and their descendants * Native Americans in the United States * Indigenous peoples in Canada ** First Nations in Canada, Canadian indigenous peoples neither Inuit nor Métis ** Inuit, an indigenous people of the mainland and insular Bering Strait, northern coast, Labrador, Greenland, and Canadian Arctic Archipelago regions ** Métis in Canada, peoples of Canada originating from both indigenous (First Nations or Inuit) and European ancestry * Indigenous peoples of Costa Rica * Indigenous peoples of Mexico * Indigenous peoples of South America ** Indigenous peoples in Argentina ** Indigenous peoples in Bolivia ** Indigenous peoples in Brazil ** Indigenous peoples in Chile ** Indigenous peoples in Colombia ** Indigenous peoples in Ecuador ** Indigenous peoples in Peru ** Indigenous peoples in Suriname ** Indigenous peoples in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African American (U
African Americans (also referred to as Black Americans and Afro-Americans) are an ethnic group consisting of Americans with partial or total ancestry from sub-Saharan Africa. The term "African American" generally denotes descendants of enslaved Africans who are from the United States. While some Black immigrants or their children may also come to identify as African-American, the majority of first generation immigrants do not, preferring to identify with their nation of origin. African Americans constitute the second largest racial group in the U.S. after White Americans, as well as the third largest ethnic group after Hispanic and Latino Americans. Most African Americans are descendants of enslaved people within the boundaries of the present United States. On average, African Americans are of West/ Central African with some European descent; some also have Native American and other ancestry. According to U.S. Census Bureau data, African immigrants generally do not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White (U
White is the lightest color and is achromatic (having no hue). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White on television and computer screens is created by a mixture of red, blue, and green light. The color white can be given with white pigments, especially titanium dioxide. In ancient Egypt and ancient Rome, priestesses wore white as a symbol of purity, and Romans wore white togas as symbols of citizenship. In the Middle Ages and Renaissance a white unicorn symbolized chastity, and a white lamb sacrifice and purity. It was the royal color of the kings of France, and of the monarchist movement that opposed the Bolsheviks during the Russian Civil War (1917–1922). Greek and Roman temples were faced with white marble, and beginning in the 18th century, with the advent of neoclassical architecture, white became the most common color of new churches ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Population Density
Population density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical term.Matt RosenberPopulation Density Geography.about.com. March 2, 2011. Retrieved on December 10, 2011. In simple terms, population density refers to the number of people living in an area per square kilometre, or other unit of land area. Biological population densities Population density is population divided by total land area, sometimes including seas and oceans, as appropriate. Low densities may cause an extinction vortex and further reduce fertility. This is called the Allee effect after the scientist who identified it. Examples of the causes of reduced fertility in low population densities are * Increased problems with locating sexual mates * Increased inbreeding Human densities Population density is the number of people per unit of area, usuall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Census
A census is the procedure of systematically acquiring, recording and calculating information about the members of a given population. This term is used mostly in connection with national population and housing censuses; other common censuses include censuses of agriculture, traditional culture, business, supplies, and traffic censuses. The United Nations (UN) defines the essential features of population and housing censuses as "individual enumeration, universality within a defined territory, simultaneity and defined periodicity", and recommends that population censuses be taken at least every ten years. UN recommendations also cover census topics to be collected, official definitions, classifications and other useful information to co-ordinate international practices. The UN's Food and Agriculture Organization (FAO), in turn, defines the census of agriculture as "a statistical operation for collecting, processing and disseminating data on the structure of agriculture, covering th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Royal, Virginia
Port Royal is an incorporated town in Caroline County, Virginia, United States. The population was 126 at the 2010 census. Port Royal was established in the mid-17th century in the Colony of Virginia primarily as a port at the head of the navigable reach of the Rappahannock River for export of tobacco, Virginia's cash crop. The town developed along an early stage road, which brought passengers and freight for embarkation on ships at the river. It is near the crossroads of the busy modern highways of U.S. Route 17 and U.S. Route 301. History 17th century origins Port Royal is one of the area's oldest colonial settlements. It was first established in 1652 by English colonists as a port at the head of sea-going navigation on the Rappahannock River. Waterways were the fastest and easiest method of transportation of people and property in the British colony of Virginia. It was an important point for export of tobacco, Virginia's cash crop. Local tradition holds that Port Royal wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
