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Agent-based Model In Biology
Agent-based models have many applications in biology, primarily due to the characteristics of the modeling method. Agent-based modeling is a rule-based, computational modeling methodology that focuses on rules and interactions among the individual components or the agents of the system. The goal of this modeling method is to generate populations of the system components of interest and simulate their interactions in a virtual world. Agent-based models start with rules for behavior and seek to reconstruct, through computational instantiation of those behavioral rules, the observed patterns of behavior. Characteristics Several of the characteristics of agent-based models important to biological studies include: Modular structure The behavior of an agent-based model is defined by the rules of its agents. Existing agent rules can be modified or new agents can be added without having to modify the entire model. Emergent properties Through the use of the individual agents that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Agent-based Model
An agent-based model (ABM) is a computational model for simulating the actions and interactions of autonomous agents (both individual or collective entities such as organizations or groups) in order to understand the behavior of a system and what governs its outcomes. It combines elements of game theory, complex systems, emergence, computational sociology, multi-agent systems, and evolutionary programming. Monte Carlo methods are used to understand the stochasticity of these models. Particularly within ecology, ABMs are also called individual-based models (IBMs). A review of recent literature on individual-based models, agent-based models, and multiagent systems shows that ABMs are used in many scientific domains including biology, ecology and social science. Agent-based modeling is related to, but distinct from, the concept of multi-agent systems or multi-agent simulation in that the goal of ABM is to search for explanatory insight into the collective behavior of agents obeying ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Crop
A crop is a plant that can be grown and harvested extensively for profit or subsistence. When the plants of the same kind are cultivated at one place on a large scale, it is called a crop. Most crops are cultivated in agriculture or hydroponics. Crops may include macroscopic fungus (e.g. mushrooms) and marine macroalga (e.g. seaweed), some of which are grown in aquaculture. Most crops are harvested as food for humans or fodder for livestock. Some crops are gathered from the wild often in a form of intensive gathering (e.g. ginseng, yohimbe, and eucommia). Important non-food crops include horticulture, floriculture and industrial crops. Horticulture crops include plants used for other crops (e.g. fruit trees). Floriculture crops include bedding plants, houseplants, flowering garden and pot plants, cut cultivated greens, and cut flowers. Industrial crops are produced for clothing (fiber crops e.g. cotton), biofuel (energy crops, algae fuel), or medicine (medic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Humber
The Humber is a large tidal estuary on the east coast of Northern England. It is formed at Trent Falls, Faxfleet, by the confluence of the tidal rivers Ouse and Trent. From there to the North Sea, it forms part of the boundary between the East Riding of Yorkshire on the north bank and North Lincolnshire on the south bank. Although the Humber is an estuary from the point at which it is formed, many maps show it as the River Humber. Below Trent Falls, the Humber passes the junction with the Market Weighton Canal on the north shore, the confluence of the River Ancholme on the south shore; between North Ferriby and South Ferriby and under the Humber Bridge; between Barton-upon-Humber on the south bank and Kingston upon Hull on the north bank (where the River Hull joins), then meets the North Sea between Cleethorpes on the Lincolnshire side and the long and thin headland of Spurn Head to the north. Ports on the Humber include the Port of Hull, the Port of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Yorkshire
Yorkshire ( ; abbreviated Yorks), formally known as the County of York, is a historic county in northern England and by far the largest in the United Kingdom. Because of its large area in comparison with other English counties, functions have been undertaken over time by its subdivisions, which have also been subject to periodic reform. Throughout these changes, Yorkshire has continued to be recognised as a geographic territory and cultural region. The name is familiar and well understood across the United Kingdom and is in common use in the media and the military, and also features in the titles of current areas of civil administration such as North Yorkshire, South Yorkshire, West Yorkshire and the East Riding of Yorkshire. Within the borders of the historic county of Yorkshire are large stretches of countryside, including the Yorkshire Dales, North York Moors and Peak District national parks. Yorkshire has been nicknamed "God's Own Country" or "God's Own County" by its in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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North Yorkshire
North Yorkshire is the largest ceremonial county (lieutenancy area) in England, covering an area of . Around 40% of the county is covered by national parks, including most of the Yorkshire Dales and the North York Moors. It is one of four counties in England to hold the name Yorkshire; the three other counties are the East Riding of Yorkshire, South Yorkshire and West Yorkshire. North Yorkshire may also refer to a non-metropolitan county, which covers most of the ceremonial county's area () and population (a mid-2016 estimate by the ONS of 602,300), and is administered by North Yorkshire County Council. The non-metropolitan county does not include four areas of the ceremonial county: the City of York, Middlesbrough, Redcar and Cleveland and the southern part of the Borough of Stockton-on-Tees, which are all administered by unitary authorities. The non-metropolitan county and the City of York are within the Yorkshire and the Humber region. Middlesbrough, Redcar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Rhopalosiphum Padi
Bird cherry-oat aphid (''Rhopalosiphum padi'') is an aphid in the superfamily Aphidoidea in the order Hemiptera. It is a true bug and sucks sap from plants. It is considered a major pest in cereal crops, especially in temperate regions, as well as other hosts in parts of Northern Europe. It is the principal vector of many viruses in economically important field crops. Host plants and distribution ''R. padi'' has a worldwide distribution and according to research, they can colonize a number of dicotyledon host plants, although their preference is within monocotyledon plant groups much like the closely related '' R. maidis'' and '' R. rufiabdominale''. The main plant hosts are categorized and listed below but as the name suggests, the primary host is '' Prunus padus'', where it overwinters as eggs. In Northern America, it is found to overwinter on ''Prunus virginiana'' (common choke-cherry). In spring, it attacks all major cereals and pasture grasses; particularly barley, oats, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Population Dynamics
Population dynamics is the type of mathematics used to model and study the size and age composition of populations as dynamical systems. History Population dynamics has traditionally been the dominant branch of mathematical biology, which has a history of more than 220 years,Malthus, Thomas Robert. An Essay on the Principle of Population: Library of Economics although over the last century the scope of mathematical biology has greatly expanded. The beginning of population dynamics is widely regarded as the work of Malthus, formulated as the Malthusian growth model. According to Malthus, assuming that the conditions (the environment) remain constant ('' ceteris paribus''), a population will grow (or decline) exponentially. This principle provided the basis for the subsequent predictive theories, such as the demographic studies such as the work of Benjamin Gompertz and Pierre François Verhulst in the early 19th century, who refined and adjusted the Malthusian demographic m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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NetLogo
NetLogo is a programming language and integrated development environment (IDE) for agent-based modeling. About NetLogo was designed by Uri Wilensky, in the spirit of the programming language Logo, to be "low threshold and no ceiling". It teaches programming concepts using agents in the form of ''turtles'', ''patches'', ''links'' and the ''observer''. NetLogo was designed with multiple audiences in mind, in particular: teaching children in the education community, and for domain experts without a programming background to model related phenomena. Many scientific articles have been published using NetLogo. The NetLogo environment enables exploration of emergent phenomena. It comes with an extensive models library including models in a variety of domains, such as economics, biology, physics, chemistry, psychology, system dynamics. NetLogo allows exploration by modifying switches, sliders, choosers, inputs, and other interface elements. Beyond exploring, NetLogo allows authoring ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Heterogeneous
Homogeneity and heterogeneity are concepts often used in the sciences and statistics relating to the uniformity of a substance or organism. A material or image that is homogeneous is uniform in composition or character (i.e. color, shape, size, weight, height, distribution, texture, language, income, disease, temperature, radioactivity, architectural design, etc.); one that is heterogeneous is distinctly nonuniform in at least one of these qualities. Heterogeneous Mixtures, in chemistry, is where certain elements are unwillingly combined and, when given the option, will separate. Etymology and spelling The words ''homogeneous'' and ''heterogeneous'' come from Medieval Latin ''homogeneus'' and ''heterogeneus'', from Ancient Greek ὁμογενής (''homogenēs'') and ἑτερογενής (''heterogenēs''), from ὁμός (''homos'', “same”) and ἕτερος (''heteros'', “other, another, different”) respectively, followed by γένος (''genos'', “kind”); - ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Beetle
Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently, with estimates suggesting that there are between 0.9 and 2.1 million total species. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae (ladybirds or ladybugs) eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops. Beetles typically have a particularly har ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Otay Mesa, California
Otay Mesa ( ) is a community in the southern section of the city of San Diego, just north of the U.S.–Mexico border. It is bordered by the Otay River Valley and the city of Chula Vista on the north; Interstate 805 and the neighborhoods of Ocean View Hills and San Ysidro on the west; unincorporated San Diego County on the north and east including East Otay Mesa and the San Ysidro Mountains; and the Otay Centenario borough of Tijuana, Mexico on the south. Major thoroughfares include Otay Mesa Road/ California State Route 905, Otay Valley Road/Heritage Road, Siempre Viva Road, and California State Route 125. Otay Mesa is the second-least walkable neighborhood of San Diego. History ''Otay'' is derived from the Kumeyaay language. Although its meaning is disputed, possible derivations include "otai", meaning "brushy"; "Tou-ti" meaning "big mountain"; or "etaay" meaning "big". ''Mesa'' is the Spanish word for plateau, table or tableland. Aviation pioneer John J. Montgomer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Calexico, California
Calexico () is a city in southern Imperial County, California. Situated on the Mexican border, it is linked economically with the much larger city of Mexicali, the capital of the Mexican state of Baja California. It is about east of San Diego and west of Yuma, Arizona. Calexico, along with six other incorporated Imperial County cities, forms part of the larger populated area known as the Imperial Valley. First explored by Europeans in the 18th century, Calexico began as a small tent community which was ultimately incorporated in 1908. Etymology The name of the city is a portmanteau of California and Mexico. The originally proposed names were ''Santo Tomas'' or ''Thomasville.'' Mexicali is a similarly named city directly across the international border from Calexico, its name being a portmanteau of the words "Mexico" and "California". History The expedition of Spanish explorer Juan Bautista de Anza traveled through the area some time between 1775 and 1776, during Spanis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |