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Topic Review
AmBX
AmBX (officially stylised amBX) is a technology (originally developed by Philips) for controlling incandescent and white/coloured LED lighting and other compatible peripherals. This allows lighting designers, and entertainment media providers to generate custom designed lighting environments that are triggered by compatible peripherals (such as lights). The patents for the technology are now owned by a United Kingdom company based in Redhill, amBX UK LTD. AmBX licenses the technology to entertainment producers at no charge.
  • 800
  • 28 Nov 2022
Topic Review
Outline of Geophysics
The following outline is provided as an overview of and topical guide to geophysics: Geophysics – the physics of the Earth and its environment in space; also the study of the Earth using quantitative physical methods. The term geophysics sometimes refers only to the geological applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations have a broader definition that includes the hydrological cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial relations; and analogous problems associated with the Moon and other planets.
  • 754
  • 09 Nov 2022
Topic Review
Ayat Al-Akhras
Ayat al-Akhras (February 20, 1985 – March 29, 2002) was the third and youngest Palestinian female suicide bomber who, at age 18 (some sources report her age to be as young as 16), killed herself and two Israeli civilians on March 29, 2002 by detonating explosives belted to her body. The killings gained widespread international attention due to Ayat's age and gender and the fact that one of the victims was also a teenage girl. The killings led U.S. President George W. Bush to observe: “When an 18-year-old Palestinian girl is induced to blow herself up and in the process kills a 17-year-old Israeli girl, the future itself is dying; the future of the Palestinian people and the future of the Israeli people.”
  • 752
  • 24 Oct 2022
Topic Review
Almaguin Highlands
The Almaguin Highlands Region (colloquially known as Almaguin, also referred to as 'the Highlands') in Ontario, Canada, covers approximately 5,200 km2 (2,000 sq mi) comprising the eastern half of Parry Sound District. It is bounded by Muskoka in the south, and by Lake Nipissing and Nipissing District in the north. The eastern edge abuts the western boundary of Algonquin Provincial Park, whereas the western boundary of the Almaguin Highlands is generally regarded to be the mid east-west point of Parry Sound District. Originally derived from the words, Algonquin, Magnetawan, and Seguin. Almaguin is now used to describe the marketing region of East Parry Sound.
  • 746
  • 01 Dec 2022
Topic Review
True Range Multilateration
True range multilateration is a method to determine the location of a movable vehicle or stationary point in space using multiple ranges (distances) between the vehicle/point and multiple spatially-separated known locations (often termed 'stations'). True range multilateration is both a mathematical topic and an applied technique used in several fields. A practical application involving a fixed location is the trilateration method of surveying. Applications involving vehicle location are termed navigation when on-board persons/equipment are informed of its location, and are termed surveillance when off-vehicle entities are informed of the vehicle's location. Two slant-ranges from two known locations can be used to locate a third point in a two-dimensional Cartesian space (plane), which is a frequently applied technique (e.g., in surveying). Similarly, two spherical ranges can be used to locate a point on a sphere, which is a fundamental concept of the ancient discipline of celestial navigation — termed the altitude intercept problem. Moreover, if more than the minimum number of ranges are available, it is good practice to utilize those as well. This article addresses the general issue of position determination using multiple ranges. In two-dimensional geometry, it is known that if a point lies on two circles, then the circle centers and the two radii provide sufficient information to narrow the possible locations down to two – one of which is the desired solution and the other is an ambiguous solution. Additional information often narrow the possibilities down to a unique location. In three-dimensional geometry, when it is known that a point lies on the surfaces of three spheres, then the centers of the three spheres along with their radii also provide sufficient information to narrow the possible locations down to no more than two (unless the centers lie on a straight line). True range multilateration can be contrasted to the more frequently encountered (pseudorange) multilateration, which employs range differences to locate a (typically, movable) point. Pseudo range multilateration is almost always implemented by measuring times-of-arrival (TOAs) of energy waves. True range multilateration can also be contrasted to triangulation, which involves the measurement of angles. Multiple, sometimes overlapping and conflicting terms are employed for similar concepts – e.g., multilateration without modification has been used for aviation systems employing both true ranges and pseudo ranges. Moreover, different fields of endeavor may employ different terms. In geometry, trilateration is defined as the process of determining absolute or relative locations of points by measurement of distances, using the geometry of circles, spheres or triangles. In surveying, trilateration is a specific technique. The term true range multilateration is accurate, general and unambiguous. Authors have also used the terms range-range and rho-rho multilateration for this concept.
  • 742
  • 25 Oct 2022
Topic Review
Differentiating True and False Cinnamon
Given the intricate compositions of essential oils (EOs), various discrimination approaches were explored to ensure quality, safety, and authenticity, thereby establishing consumer confidence.
  • 738
  • 05 Oct 2023
Topic Review
Santa Cruz Province, Argentina
Santa Cruz Province (Spanish: Provincia de Santa Cruz, Spanish pronunciation: [ˈsanta ˈkɾus], 'Holy Cross') is a province of Argentina , located in the southern part of the country, in Patagonia. It borders Chubut Province to the north, and Chile to the west and south, with an Atlantic coast on its east. Santa Cruz is the second-largest province of the country (after Buenos Aires Province), and the least densely populated in mainland Argentina. The indigenous people of the province are the Tehuelches, who despite European exploration from the 16th century onwards, retained independence until the late 19th century. Soon after the Conquest of the Desert in the 1870s, the area was organised as the Territory of Santa Cruz, named after its original capital in Puerto Santa Cruz. The capital moved to Rio Gallegos in 1888 and has remained there ever since. Immigrants from various European countries came to the territory in the late 19th and early 20th century during a gold rush. Santa Cruz became a province of Argentina in 1957.
  • 735
  • 30 Oct 2022
Topic Review
Theodore Roosevelt National Park
Theodore Roosevelt National Park is an American national park comprising three geographically separated areas of badlands in western North Dakota. The park was named for U.S. President Theodore Roosevelt. The park covers 70,446 acres (110.072 sq mi; 28,508 ha; 285.08 km2) of land in three sections: the North Unit, the South Unit, and the Elkhorn Ranch Unit. The park's larger South Unit lies alongside Interstate 94 near Medora, North Dakota. The smaller North Unit is situated about 80 mi (130 km) north of the South Unit, on U.S. Highway 85, just south of Watford City, North Dakota. Roosevelt's Elkhorn Ranch is located between the North and South units, approximately 20 mi (32 km) west of US 85 and Fairfield, North Dakota. The Little Missouri River flows through all three units of the park. The Maah Daah Hey Trail connects all three units. The park received 708,003 recreational visitors in 2017. It is the only American national park named directly after a single person.
  • 735
  • 22 Nov 2022
Topic Review
Central Highlands, Vietnam
Tây Nguyên, translated as Western Highlands and sometimes also called Central Highlands, is one of the regions of Vietnam. It contains the provinces of Đắk Lắk, Đắk Nông, Gia Lai, Kon Tum, Lâm Đồng. This region is sometimes referred to as Cao nguyên Trung bộ (literally "Midland Highlands"), and was referred to during the Republic of Vietnam as Cao nguyên Trung phần (literally "Central Highlands").
  • 733
  • 22 Nov 2022
Topic Review
Changing Food Consumption Patterns and Land Requirements
The food consumed and the household size determine the land requirement for food. Continued population growth without improved living standards and adequate food production output per hectare will further exacerbate food insecurity and land shortage in Nigeria.
  • 731
  • 19 Jan 2022
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