We investigate optimal policy for a predator-prey system with age-dependent.
研究一类具有年龄结构的捕食-食饵种群动力系统的最优收获策略。
In this paper, a classical periodic two prey and a predator predator-prey system with impulsive effect is investigated.
本文讨论一类具有脉冲效应和周期系数的两个食饵一个捕食者的捕食-食饵系统的动力学行为。
In this paper, we studied the existence and uniqueness of limit cycle or the predator-prey system (l), and obtained theorems 1, 2, 3.
本文研究捕食—食饵系统(1)极限环的存在唯一性，得到了文中的定理1、2、3。
This paper discusses the state of Hopf bifurcation in a predator-prey system when parameter varies in some field, and analyzes the stability of the system.
讨论了一类捕食者-食饵系统的参数在某个范围变化时在非零不动点处产生霍普夫分叉的情况，并对其稳定性进行了分析。
Sufficient conditions are obtained for the global existence of a positive periodic solution of periodic neutral delay predator-prey system by using the method of coincidence degree theory.
利用重合度理论建立了一类周期中立型时滞捕食者-食饵系统正周期解的全局存在性的充分条件。
The following three species periodic predator-prey system is considered, the sufficient condition for the existence of a globally and asymptotically stable periodic solution of the system is obtained.
本文研究了一类三种群周期食饵系统，并给出了其存在平稳振荡的充分条件。
Even if the prey had a good sensory system to notice a predator closing in, the success rate of a nocturnal attack may be higher than a diurnal attack.
即使猎物拥有很好的感知系统，注意到了食肉动物正在靠近，夜间攻击的成功率也可能比白天攻击的成功率高。
"Snakes possess a unique sensory system for detecting infrared radiation, enabling them to generate a 'thermal image' of predators or prey," begins the study.
“蛇类拥有一套独特的感官系统，用来探测红外射线，使得它们可以生成捕食者或猎物的“热成像图片”。”研究报道开宗明义。
However, if the system will accept a similar voice that sounds "sick," then it's more likely to fall prey to attackers who can reasonably mimic the voice of valid users of the system.
但是，如果系统能接受一个听起来象“病人”一样类似的声音，则会给那些适当模仿系统有效用户的声音的攻击者钻空子。
They say that a prey animal's nervous system shuts down when the prey animal is snatched by a predator.
人们常说当捕食动物活捉住猎物时，被捕食者的神经系统像死机了一样。
Anteaters possess a very simple sensory system for use in locating prey.
靠一个非常简单的感官系统去定位猎物。
Analyzes singular points of prey-predator system and proves that the system hasn't limit cycle on whole plane surface.
对一类生物系统的奇点进行分析，并证明在整个平面上该系统不存在极限环。
A three-species ratio-dependent predator-prey model with time delays is investigated, conditions are given for persistence of the system.
研究了一类具有时滞的基于比率型三种群捕食者-食饵系统，给出了系统持续生存的条件。
The existence of positive solutions of the steady-state system is studied for a kind of predator-prey model under the third boundary conditions.
研究了一类捕食者-食饵模型的平衡态系统在第三边界条件下正解的存在性。
A system of retarted functional differential equations as a predator-prey model with stage structure and dispersion is discussed. Conditions for global stability of the system are given.
讨论了一类带有扩散和具有阶段结构与时滞的两种群捕食系统，分析了该系统的非负不变性、边界平衡点性质及全局渐近稳定性。
Kenji brand LOGO, with one kind of response fast hawk class (birds of prey bird) the graph took the GPS positioning system brand image, vivid is direct-viewing, manifests the product localization.
地鸷品牌标记，用一类反映疾速的的鹰种(鸷鸟)的图形往做替GPS订位体系品牌抽象，活泼曲观，体隐产品订位。
In this paper, we consider stability of a prey-predator system while the prey has group defence ability deals with the qualitative analysis, Obtained new several re-suits.
本文研究了一类具有较强群体防御能力捕食系统的稳定性并进行定性分析，得到若干新结果。
The immune system often kills tumor cells like a predator hunting prey, and the tumor cells that develop defenses against the predation are the ones that survive and reproduce.
免疫系统杀死癌细胞，就像食肉者猎杀弱者。能存活和繁殖的肿瘤细胞是那些对掠夺建立起防御系统者。
The immune system often kills tumor cells like a predator hunting prey, and the tumor cells that develop defenses against the predation are the ones that survive and reproduce.
免疫系统杀死癌细胞，就像食肉者猎杀弱者。能存活和繁殖的肿瘤细胞是那些对掠夺建立起防御系统者。
应用推荐