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Topic Review
Population Ecology
Population ecology is a sub-field of ecology that deals with the dynamics of species populations and how these populations interact with the environment, such as birth and death rates, and by immigration and emigration. The discipline is important in conservation biology, especially in the development of population viability analysis which makes it possible to predict the long-term probability of a species persisting in a given patch of habitat. Although population ecology is a subfield of biology, it provides interesting problems for mathematicians and statisticians who work in population dynamics.
  • 876
  • 19 Oct 2022
Topic Review
Hydrus
Hydrus is a suite of Windows-based modeling software that can be used for analysis of water flow, heat and solute transport in variably saturated porous media (e.g., soils). HYDRUS suite of software is supported by an interactive graphics-based interface for data-preprocessing, discretization of the soil profile, and graphic presentation of the results. While HYDRUS-1D simulates water flow, solute and heat transport in one-dimension, and is a public domain software, HYDRUS 2D/3D extends the simulation capabilities to the second and third dimensions, and is distributed commercially.
  • 536
  • 19 Oct 2022
Topic Review
Brick (Electronics)
The word "brick", when used in reference to consumer electronics, describes an electronic device such as a mobile device, game console, or router that, due to corrupted firmware, a hardware problem, or other damage, can no longer function, and thus is "bricked". The device becomes as technologically useful as a brick, hence the name.
  • 1.4K
  • 19 Oct 2022
Topic Review
Syslog
In computing, syslog /ˈsɪslɒɡ/ is a standard for message logging. It allows separation of the software that generates messages, the system that stores them, and the software that reports and analyzes them. Each message is labeled with a facility code, indicating the type of system generating the message, and is assigned a severity level. Computer system designers may use syslog for system management and security auditing as well as general informational, analysis, and debugging messages. A wide variety of devices, such as printers, routers, and message receivers across many platforms use the syslog standard. This permits the consolidation of logging data from different types of systems in a central repository. Implementations of syslog exist for many operating systems. When operating over a network, syslog uses a client-server architecture where a syslog server listens for and logs messages coming from clients.
  • 829
  • 19 Oct 2022
Topic Review
HAGGIS
HAGGIS is a high-level reference programming language used primarily to examine Computing Science for Scottish pupils taking SQA courses on the subject. HAGGIS is used as a tool to bridge the gap between pseudocode and typical computer programming. HAGGIS is not based on any one language but a mixture that is intended to allow a pupil familiar with any of the many languages used in classrooms to easily understand the syntactic construct being used in an example. It has multiple programming paradigms of functional, imperative and object-oriented to suit this purpose. There are three separate language definitions, one for each level at which computing is assessed by the SQA; these are proper subsets of each other, so for example any program contained by the National 5 level language is also well-defined at Higher and Advanced Higher levels. Higher includes the definition of procedures and functions and the use of record types and files, while Advanced Higher includes object-orientation. Online HAGGIS interpreters have been developed to provide a way for examiners and teachers to check their programs are correctly defined and behave as expected.
  • 424
  • 19 Oct 2022
Topic Review
IBM POWER Instruction Set Architecture
The IBM POWER ISA is a reduced instruction set computer (RISC) instruction set architecture (ISA) developed by IBM. The name is an acronym for Performance Optimization With Enhanced RISC. The ISA is used as base for high end microprocessors from IBM during the 1990s and were used in many of IBM's servers, minicomputers, workstations, and supercomputers. These processors are called POWER1 (RIOS-1, RIOS.9, RSC, RAD6000) and POWER2 (POWER2, POWER2+ and P2SC). The ISA evolved into the PowerPC instruction set architecture and was deprecated in 1998 when IBM introduced the POWER3 processor that was mainly a 32/64-bit PowerPC processor but included the POWER ISA for backwards compatibility. The original POWER ISA was then abandoned. PowerPC evolved into the third Power ISA in 2006. IBM continues to develop PowerPC microprocessor cores for use in their application-specific integrated circuit (ASIC) offerings. Many high volume applications embed PowerPC cores.
  • 1.4K
  • 19 Oct 2022
Topic Review
COHERENS
COHERENS is an open-source hydrodynamic computer model for shallow waters. It was developed in the 1990s by the Royal Belgian Institute of Natural Sciences (RBINS). The name COHERENS is an acronym of COupled Hydrodynamical Ecological model for REgioNal Shelf seas. COHERENS can be used in 1D, 2D or 3D mode and can model both salt waters such as coastal and shelf seas and freshwater basins such as lakes. Applications of the model include obtaining a better understanding of shallow water systems and managing pollution.
  • 349
  • 19 Oct 2022
Topic Review
French Republican Calendar
The French Republican calendar (French: calendrier républicain français), also commonly called the French Revolutionary calendar (calendrier révolutionnaire français), was a calendar created and implemented during the French Revolution , and used by the French government for about 12 years from late 1793 to 1805, and for 18 days by the Paris Commune in 1871. The revolutionary system was designed in part to remove all religious and royalist influences from the calendar, and was part of a larger attempt at decimalisation in France (which also included decimal time of day, decimalisation of currency, and metrication). It was used in government records in France and other areas under French rule, including Belgium, Luxembourg, and parts of the Netherlands, Germany, Switzerland, Malta, and Italy.
  • 2.0K
  • 19 Oct 2022
Topic Review
Rational Application Developer
Rational Application Developer for WebSphere Software (RAD) is a commercial Eclipse-based integrated development environment (IDE), made by IBM. It provides tools for visually designing, constructing, testing, analyzing, and deploying many types of applications including Java, Java EE, Web 2.0, hybrid mobile, Portal applications, and Web and REST services.
  • 1.7K
  • 19 Oct 2022
Topic Review
Web Search Engine
A web search engine or Internet search engine is a software system that is designed to carry out web search (Internet search), which means to search the World Wide Web in a systematic way for particular information specified in a textual web search query. The search results are generally presented in a line of results, often referred to as search engine results pages (SERPs). The information may be a mix of links to web pages, images, videos, infographics, articles, research papers, and other types of files. Some search engines also mine data available in databases or open directories. Unlike web directories, which are maintained only by human editors, search engines also maintain real-time information by running an algorithm on a web crawler. Internet content that is not capable of being searched by a web search engine is generally described as the deep web.
  • 1.7K
  • 19 Oct 2022
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