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Stefan Langerman
Stefan Langerman false Swarzberg is a Belgian computer scientist and mathematician whose research topics include computational geometry, data structures, and recreational mathematics. He is professor and co-head of the algorithms research group at the Université libre de Bruxelles (ULB) with Jean Cardinal. He is a director of research for the Belgian Fonds de la Recherche Scientifique (FRS–FNRS). Education and career Langerman left his Belgian secondary school at age 13 and was admitted by examination to the École polytechnique of the Université libre de Bruxelles. He studied civil engineering there for two years before switching his course of study to computer science, and earning a licenciate. After working as a user interface programmer for the Center for Digital Molecular Biophysics in Gembloux, he moved to the US for graduate study at Rutgers University, where he earned a master's degree and then in 2001 a PhD. His doctoral dissertation, ''Algorithms and Data Structur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bellairs Research Institute
The Bellairs Research Institute, located on the Caribbean island of Barbados, was founded in 1954 as a field-station for McGill University. Initial funding was from a bequest by British naval commander, Carlyon Bellairs, for whom the institute is named. Bellairs is located in Holetown, next to Folkestone Marine Park and Museum, on the western beach of the island. Initially founded as a marine biology field station, it is also currently used for undergraduates to partake in a Barbados Field Study Semester (BFSS). Environmental Engineering, International Development Studies and Environmental Studies are some of the areas it caters to. Bellairs runs numerous McGill University field-courses and workshops throughout the year, including Applied Tropical Ecology, Geography, and the Barbados Field Study Semester. Bellairs also holds annual field courses from other universities from around the world including the University of Toronto (marine biology) and Western Michigan University (ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mozartkugel
A (; English: "Mozart ball"; ) is a small, round sugar confection made of pistachio, marzipan and nougat that is covered with dark chocolate. It was originally known as , created in 1890 by Salzburg confectioner Paul Fürst (1856–1941) and named after Wolfgang Amadeus Mozart. Handmade are manufactured by Fürst's descendants up to today, while similar products have been developed by numerous confectioners, often industrially produced. Origins Paul Fürst's family descended from Dinkelsbühl; he himself was born in Sierning, Upper Austria, and was raised in Salzburg. Upon the early death of his father, he lived in the house of his uncle, who owned a confectionery at No. 13, Brodgasse. Fürst took over his uncle's business and trained as an apprentice in Vienna, Budapest, Paris, and Nice. In 1884 he opened his own pastry shop at No. 13, Brodgasse, where he, by his own account, created the praline after lengthy trials in 1890. As his specialty became increasingly popular, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Demaine
Martin L. (Marty) Demaine (born 1942) is an artist and mathematician, the Angelika and Barton Weller artist in residence at the Massachusetts Institute of Technology (MIT). Demaine attended Medford High School in Medford, Massachusetts. After studying glassblowing in England, he began his artistic career by blowing art glass in New Brunswick in the early 1970s."Fluency", past exhibitions , Andrew and Laura McCain Art Gallery, Florenceville, New Brunswick, Canada, retrieved 2009-08-22. The Demaine Studio, located in and later at Opus Village in Mactaquac, was the first one-man g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur Langerman
Arthur Eugène Langerman false Swarzberg, known as Arthur Langerman (born 21 August 1942), is a Belgian diamantaire. He is known for having gathered of one of the largest private collections of antisemitic images in the world. The collection constitutes the Arthur Langerman Archive for the Study of Visual Antisemitism (ALAVA) at Technische Universität Berlin in Germany. Biography Langerman was born on 21 August 1942 in Borgerhout, Belgium. His father Salomon Langerman false Swarzberg was a furrier born in Kraków in 1907. His Mother Zysla Brandla Blajwas was a milliner born in Warsaw. Both of them settled in Belgium in 1926, and married each other in 1941.Géraldine Kamps, Nicolas Zomersztajn, « ''Mensch'' de l'année 2020. Arthur Langerman, du collectionneur au passeur ''».'' In: ''Regards.'' Centre communautaire laïc juif, 3 mars 2020 They were arrested on 28 March 1944, and detained at the Mechelen transit camp, then deported to Auschwitz-Birkenau by Transport XXV o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diamond Color
A chemically pure and structurally perfect diamond is perfectly transparent with no hue, or ''color''. However, in reality almost no gem-sized natural diamonds are absolutely perfect. The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice. Depending on the hue and intensity of a diamond's coloration, a diamond's color can either detract from or enhance its value. For example, most white diamonds are discounted in price when more yellow hue is detectable, while intense pink diamonds or blue diamonds (such as the Hope Diamond) can be dramatically more valuable. Of all colored diamonds, red diamonds are the rarest. The Aurora Pyramid of Hope displays a spectacular array of naturally colored diamonds, including red diamonds. History of color grading Color grading of diamonds was performed as a step of sorting rough diamonds for sale by the London Diamond Syndicate. As the diamond trade developed, early diamond grades were in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Korea
North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korea, Korean Peninsula and shares borders with China and Russia to the north, at the Yalu River, Yalu (Amnok) and Tumen River, Tumen rivers, and South Korea to the south at the Korean Demilitarized Zone. North Korea's border with South Korea is a disputed border as both countries claim the entirety of the Korean Peninsula. The country's western border is formed by the Yellow Sea, while its eastern border is defined by the Sea of Japan. North Korea, like South Korea, its southern counterpart, claims to be the legitimate government of the entire peninsula and List of islands of North Korea, adjacent islands. Pyongyang is the capital and largest city. In 1910, Korean Empire, Korea was Korea under Japanese rule, annexed by the Empire of Japan. In 1945, after the Surrender of Japan, Japanese surrender at the End of World War II in Asia, end ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Persistent Data Structure
In computing, a persistent data structure or not ephemeral data structure is a data structure that always preserves the previous version of itself when it is modified. Such data structures are effectively immutable, as their operations do not (visibly) update the structure in-place, but instead always yield a new updated structure. The term was introduced in Driscoll, Sarnak, Sleator, and Tarjans' 1986 article. A data structure is partially persistent if all versions can be accessed but only the newest version can be modified. The data structure is fully persistent if every version can be both accessed and modified. If there is also a meld or merge operation that can create a new version from two previous versions, the data structure is called confluently persistent. Structures that are not persistent are called ''ephemeral''. These types of data structures are particularly common in logical and functional programming, as languages in those paradigms discourage (or fully forbid) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retroactive Data Structure
In computer science a retroactive data structure is a data structure which supports efficient modifications to a sequence of operations that have been performed on the structure. These modifications can take the form of retroactive insertion, deletion or updating an operation that was performed at some time in the past. Some applications of retroactive data structures In the real world there are many cases where one would like to modify a past operation from a sequence of operations. Listed below are some of the possible applications: * ''Error correction'': Incorrect input of data. The data should be corrected and all the secondary effects of the incorrect data be removed. * ''Bad data'': When dealing with large systems, particularly those involving a large amount of automated data transfer, it is not uncommon. For example, suppose one of the sensors for a weather network malfunctions and starts to report garbage data or incorrect data. The ideal solution would be to remove all t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queap
In computer science, a queap is a priority queue data structure. The data structure allows insertions and deletions of arbitrary elements, as well as retrieval of the highest-priority element. Each deletion takes amortized time logarithmic in the number of items that have been in the structure for a longer time than the removed item. Insertions take constant amortized time. The data structure consists of a doubly linked list and a 2–4 tree data structure, each modified to keep track of its minimum-priority element. The basic operation of the structure is to keep newly inserted elements in the doubly linked list, until a deletion would remove one of the list items, at which point they are all moved into the 2–4 tree. The 2–4 tree stores its elements in insertion order, rather than the more conventional priority-sorted order. Both the data structure and its name were devised by John Iacono and Stefan Langerman. Description A queap is a priority queue that inserts element ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein Folding
Protein folding is the physical process by which a protein chain is translated to its native three-dimensional structure, typically a "folded" conformation by which the protein becomes biologically functional. Via an expeditious and reproducible process, a polypeptide folds into its characteristic three-dimensional structure from a random coil. Each protein exists first as an unfolded polypeptide or random coil after being translated from a sequence of mRNA to a linear chain of amino acids. At this stage the polypeptide lacks any stable (long-lasting) three-dimensional structure (the left hand side of the first figure). As the polypeptide chain is being synthesized by a ribosome, the linear chain begins to fold into its three-dimensional structure. Folding of many proteins begins even during translation of the polypeptide chain. Amino acids interact with each other to produce a well-defined three-dimensional structure, the folded protein (the right hand side of the figure), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeology
Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, sites, and cultural landscapes. Archaeology can be considered both a social science and a branch of the humanities. It is usually considered an independent academic discipline, but may also be classified as part of anthropology (in North America – the four-field approach), history or geography. Archaeologists study human prehistory and history, from the development of the first stone tools at Lomekwi in East Africa 3.3 million years ago up until recent decades. Archaeology is distinct from palaeontology, which is the study of fossil remains. Archaeology is particularly important for learning about prehistoric societies, for which, by definition, there are no written records. Prehistory includes over 99% of the human past, from the Paleolithic until the adven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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