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Topic Review
Mathematics of Sudoku
The class of Sudoku puzzles consists of a partially completed row-column grid of cells partitioned into N regions each of size N cells, to be filled in ("solved") using a prescribed set of N distinct symbols (typically the numbers {1, ..., N}), so that each row, column and region contains exactly one of each element of the set. The properties of Sudoku puzzles and their solutions can be investigated using mathematics and algorithms.
  • 1.9K
  • 12 Oct 2022
Topic Review
Drvspace
DriveSpace (initially known as DoubleSpace) is a disk compression utility supplied with MS-DOS starting from version 6.0 in 1993 and ending in 2000 with the release of Windows Me. The purpose of DriveSpace is to increase the amount of data the user could store on disks by transparently compressing and decompressing data on-the-fly. It is primarily intended for use with hard drives, but use for floppy disks is also supported. This feature was removed in Windows XP and later.
  • 302
  • 12 Oct 2022
Topic Review
Yarovaya Law
The Yarovaya law (in Russian: Закон Яровой, transliteration: Zakon Jarovoy), also Yarovaya package/bag, is a set of two Russia n federal bills, 374-FZ and 375-FZ, passed in 2016. The bills amend previous counter-terrorism law and separate laws regulating additional counter-terror and public safety measures. It is known to the public under the last name of one of its creators—Irina Yarovaya. The amendments included an expansion of authority for law enforcement agencies, new requirements for data collection and mandatory decoding in the telecommunications industry, as well as the increased regulation of evangelism, including a ban on the performance of "missionary activities" in non-religious settings.
  • 519
  • 12 Oct 2022
Topic Review
Igo Hatsuyōron
Igo Hatsuyōron (囲碁 発陽論, literally : On yang production in the game of go, often abbreviated Hatsuyōron) is a collection of 183 go problems (mostly tsumego), compiled in 1713 by the Japanese go master Inoue Dōsetsu Inseki. Until the end of the 19th century, the Hatsuyōron remained a closely guarded secret of the Inoue house, where it was used to drill the best disciples in the tactics. It became public after the collapse of the Four go houses; several incorrect editions are published, before the discovery in 1982 of a copy that is close to the original now lost. Igo Hatsuyōron is considered the most difficult of such collections, and as such is still used for training Go professionals. It contains many problems so complex that false or incomplete solutions were given in the first editions, and in particular an exceptional problem by its theme and its depth, rediscovered in 1982, and which is not yet completely solved in 2015.
  • 682
  • 12 Oct 2022
Topic Review
Project Naptha
Project Naptha is a browser extension software for Google Chrome that allows users to highlight, copy, edit and translate text from within images. It was created by developer Kevin Kwok, and released in April 2014 as a Chrome add-on. This software was first made available only on Google Chrome, downloadable from the Chrome Web Store. It was then made available on Mozilla Firefox, downloadable from the Mozilla Firefox add-ons repository but was soon removed. The reason behind the removal remains unknown. The web browser extension uses advanced imaging technology. Similar technologies have also been employed to produce hardcopy art, and the identification of these works. By adopting several Optical Character Recognition (OCR) algorithms, including libraries developed by Microsoft Research and Google, text is automatically identified in images. The OCR enables the build-up of a model of text regions, words and letters from all images. The OCR technology that Project Naptha adopts is a slightly differentiated technology in comparison to the technology used by software such as Google Drive and Microsoft OneNote to facilitate and analyse text within images. Project Naptha also makes use of a method called Stroke Width Transform (SWT), developed by Microsoft Research in 2008 as a form of text detection.
  • 1.6K
  • 12 Oct 2022
Topic Review
Google+
Google Plus (stylized as Google+) is an Internet-based social network that is owned and operated by Google. The service, Google's fourth foray into social networking, experienced strong growth in its initial years, although usage statistics have varied, depending on how the service is defined. Three Google executives have overseen the service, which has undergone substantial changes leading to a redesign in November 2015. On October 8, 2018, Google announced that it was shutting down Google+ for consumers, citing low user engagement and a software error, first reported by The Wall Street Journal , that potentially exposed the data of hundreds of thousands of users. Google indicated that Google+ would operate until August 2019, allowing users to download and migrate their information.
  • 2.7K
  • 12 Oct 2022
Topic Review
Microsoft Double Space BIOS Parameter Block
DriveSpace (initially known as DoubleSpace) is a disk compression utility supplied with MS-DOS starting from version 6.0 in 1993 and ending in 2000 with the release of Windows Me. The purpose of DriveSpace is to increase the amount of data the user could store on disks by transparently compressing and decompressing data on-the-fly. It is primarily intended for use with hard drives, but use for floppy disks is also supported. This feature was removed in Windows XP and later.
  • 566
  • 12 Oct 2022
Topic Review
Food Science
Food science is the basic science and applied science of food; its scope starts at overlap with agricultural science and nutritional science and leads through the scientific aspects of food safety and food processing, informing the development of food technology. Food science brings together multiple scientific disciplines. It incorporates concepts from fields such as chemistry, physics, physiology, microbiology, and biochemistry. Food technology incorporates concepts from chemical engineering, for example. Activities of food scientists include the development of new food products, design of processes to produce these foods, choice of packaging materials, shelf-life studies, sensory evaluation of products using survey panels or potential consumers, as well as microbiological and chemical testing. Food scientists may study more fundamental phenomena that are directly linked to the production of food products and its properties.
  • 1.9K
  • 12 Oct 2022
Topic Review
News Server Operation
Among the operators and users of commercial Usenet news servers, common concerns are the continually increasing storage and network capacity requirements and their effects. Completion (the ability of a server to successfully receive all traffic), retention (the amount of time articles are made available to readers) and overall system performance are the topics of frequent discussion. With the increasing demands, it is common for the transit and reader server roles to be subdivided further into numbering, storage and front end systems. These server farms are continually monitored by both insiders and outsiders, and measurements of these characteristics are often used by consumers when choosing a commercial news service.
  • 321
  • 12 Oct 2022
Topic Review
VIPS
VIPS is an open source image processing software package. It is particularly good with large images, works with multi-core processors, working with colour, scientific analysis and general research & development. It was developed during and is the product of several European research projects (VASARI, MARC, ACOHIR, Viseum) which were primarily about Imaging art, but which demanded a new approach to image processing. Compared to most image processing libraries VIPS needs little RAM and runs quickly, especially on machines with more than one CPU. This is primarily due to its architecture which automatically parallelises the image workflows. The software has two main parts: libvips is the image-processing library and nip2 is the graphical user-interface. The GUI aims to be about half-way between Photoshop and Excel. It is not designed for tasks such as retouching photographs, but more useful for the many other imaging tasks that programs like Photoshop are used for. Both work on Linux, Unix, Windows and Apple macOS (10.2 and later). VIPS is a standard package for many Linux distributions
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  • 12 Oct 2022
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