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In this paper, we first give a comparison theorem of viscosity solution to some nonlinear second order integrodifferential equation. And then using the comparison theorem, we obtain a necessary and sufficient condition for the viability property of some controlled jump diffusion processes which can keep the solution within a constraint K. 相似文献
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NataliaP TarasovaD 《化学教育》2002,23(12):15-25,40
Education is a very important factor in human development,Human development does not start with the possession of goods,as this is one measure of development.It begins with people and their education.There are ,of course,other human development resouces that are of importance,However,without education all other resources remain as latent potentials to support human development. 相似文献
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导弹武器系统生存能力研究 总被引:1,自引:0,他引:1
为了合理评估导弹武器系统的生存能力,分析了导弹武器系统所面临的威胁环境,提出了影响其生存能力的主要因素,建立了导弹武器系统的伪装能力模型、反应能力模型、防护能力模型、维修保障能力模型,以及生存能力的通用模型.最后讨论了各种因素在作战运用中的实际影响. 相似文献
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4000年来青藏高原的牧民一直以牦牛而不是牛作为大牲畜,二者是在490万年前(人类与大猩猩也是此时走上不同进化道路的)才分道扬镳的近亲.家养牦牛极好地适应了该地区4500多米的极端高海拔,研究者日前揭开了牦牛高原生存能力的基因秘密. 相似文献
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