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搜索结果: 1-11 共查到Permanence相关记录11条 . 查询时间(0.078 秒)
We analyze EPA's cleanup decisions at over 100 Superfund sites and examine whether and how EPA trades off the cost against the permanence of cleanup. EPA's decisions reveal both a preference for per...
The concepts of muddy environment and muddy tasks set the ground for us to understand the essence of intelligence, both artificial and natural, which further motivates the need of Developmental Learni...
A study was conducted in two selected areas of the Brazilian cerrado using Landsat imagery during a five years period (1996-2000), to address the following estimation issues: (1) burnt area using sta...
Infants seem sensitive to hidden objects in habituation tasks at 3.5 months but fall to retrieve hidden objects until 8 months. The authors first consider principle-based accounts of these successes a...
An emerging technology dubbed Mixed Reality, or MR, overlays virtual objects onto the real world to create a mixed reality environment. MR can provide users with an immersive experience that is richer...
We consider the classical concept of time of permanence and observe that its quantum equivalent is described by a bona fide self-adjoint operator. Its interpretation, by means of the spectral theorem,...
In this paper, a predator-prey model with mixed-type functional response is investigated. Sufficient conditions are derived that guarantee the permanence of the system. Meanwhile, when the system is p...
An investigation into (and explanation for) the remarkable permanence of early European papers made by hand in accordance with Italian practice is presented. The use of added lime ("addita calce") d...
In this paper, an autonomous competitive model with feedback control is studied. And the equilibriums of the system are discussed at first. Then the stability of equilibriums are obtained by ODE’s s...
In this paper we establish an impulsive single-species model with hereditary effect. Easily verifiable criteria for permanence and extinction of system are derived, respectively. A brief discussion is...
In this paper some easily verifiable sufficient conditions on the permanence of solutions for general nonautonomous two-species predator-prey model are established. These new criteria improve and exte...

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