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Intrinsic rate of growth
| Глоссарий по экологии и "зеленой" энергетике |
R = (natality + immigration) - (mortality + emigration) exponential g.: growth in the size of a population (or other entity) in which the rate of growth increases as the size of the population increases (j-shaped curve). logistic g.: (s-shaped curve) growth of a population under environmental constraints (carrying capacity-k) that sets a maximum population size (see selection).
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Emigration, английский
- Эмиграция
- The movement of individuals out of a population or from one area to another.
Exponential, английский
A надстроенный sound
Population, английский
- A definable set of individual units to which the findings from statistical examination of a sample subset are intended to be applied. the population will generally much outnumber the sample. in re-randomisation statistics the process of applying inference
- See stock.
- A collection of units being studied. units can be people, places, objects, epochs, drugs, procedures, or many other things. much of statistics is concerned with estimating numerical properties (parameters) of an entire population from a random sample of units from the population.
- A group or number of people living within a specified area or sharing similar characteristics (such as occupation or age).
- Население; народонаселение; генеральная совокупность (в выборочном наблюдении); популяция (биол)
- Население
- 1. the number of people living in a country or town population statistics show that the birth rate is slowing down. the government has decided to screen the whole population of the area. 2. the number of patients in hospital the hospital population in the area has fallen below 10,000.
- Популяция
- Население; популяция -
- Популяция. в клинических исследованиях совокупность субъектов, обладающих какими-либо одинаковыми признаками (пол, возраст, диагноз).
- Население; популяция
- Any group of individuals, usually of a single species, occupying a given area at the same time; groups of organisms with homologue (same) alleles. p. cycle: changes in the numbers of individuals in a population which repeatedly oscillate between periods of high and low density. p. density: allowing a mathematically precise reflection - pd. • absolute: pd = number of individuals/unit area or volume [1/m2] or [1/m3] • relative: pd allows only a simple comparison (pd <, =, >, ? etc.). p. dynamics: the variations in time and space in the sizes and densities of populations; distribution due to changing food resources - the stability of a population depends upon abiotic factors, intraspecific competition (density dependent), natality, mortality etc. p. ecology: the study of the variations in time and space in the sizes and densities of populations, and of the factors causing those variations. p. fluctuation: variations over time in the size of a population. p. growth: is zero, when the birth rate equals the death rate (see carrying capacity). nt+1 = nt + r nt, current number of individuals r = (natality + immigration) - (mortality+emigration) r, intrinsic rate of growth (see density) p. pyramid: a means of illustrating the age structure of a population diagrammatically, by placing the youngest age class at the base and stacking successive age classes above it. p. regulation : a tendency in a population for some factor to cause density to increase when it is low and to decrease nt, momentary number of individuals when it is high. n0, number of individuals at start
- Generally, a collection of individuals with common characteristics. in statistics, a potentially infinite collection of independent (->independence) units that include all units of a specified type with attention paid only to the agggregate (->aggregation) property of the collection. a sample of data drawn from this population is a subset of the units constituting this population and scientific generalizations from such samples are limited by the size of the population originally specified (->model, ->representation).
- The process of scanning content to compile and maintain an index.
- Fish of the same species inhabiting a specified geographic area.
Environmental, английский
Окружающий, внешний (о среде, воздействии); связанный с окружающими условиями [средой]
Constraints, английский
Constraint, английский
- Сдерживание (отношение события к последующей работе, из-за которого работа не может быть начата; отношение работы к последующему событию, из-за которого это событие не может совершиться)
- N 1 ограничение (син. restriction); 2 то же, что и cognitive principle functional head c~ уис один из принципов универсальной грамматики, согласно кото- рому фунциональная вершина требует нали- чия определенных признаков у своих ком- плементов 1 рассматриваемые в логике утвердительные выражения. mental ~s умственные ограничения
- The difference between a set and a subset indicating that the variety that exists under one condition is less than the variety that exists under another (after ashby). for an observer, constraints become apparent when he finds that a system can assume fewer states than are logically possible or hypothesised by him. within a cartesian product a constraint is the complement of a relation, the former contains all states excluded by the latter. information is a measure of the constraint imposed by a condition or message.
- A limitation or a restriction.
- Сдерживающий фактор
- Any restriction that occurs to the transverse contraction normally associated with a longitudinal tension, and that hence causes a secondary tension in the transverse direction.
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Incandescant globe, английский
One of the most common forms of light globe in the home, usually consisting of a glass globe inside which is a wire filament that glows when electricity is passed through it. they are the least efficient of all electrical lighting systems, and certain types are now being phased out in numerous countries, including australia.
Vorous, английский
(l. voreare, to devour) eating or feeding on. carniv.: (l. carnum, meat) an animal that eats the flesh of other animals. detriv.: (l. detritus, decay) an organism that takes energy from dead or waste organic matter. herbiv.: (l. herbum, plant) an animal that consumes plants as food. omniv.: (l. omni, all) an animal that consumes both plant and animal matter as food.
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