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Abstract: By the first integral method and properties of integral depending on a parameter, the necessary and sufficient condition on the existence of dead core solution for the boundary value of a class of nonlinear ordinary differential equations has be
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文摘:应用首次积分法并结合含参变量积分的性质，具体构造了一类二阶非线性常微分方程边值问题存在非负死角解的充分必要条件. |
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Abstract: By the method of literature summary and combining the pra ctice of marketing,the author expounds the theoretical problems,such as,the conn o tation and extension of sports products,and the conception of sports industries.
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文摘:采用文献综述研究方法，并与市场营销的实践紧密结合，论述了运动产品的内涵与外延；运动生产的定义；运动产业概念的界定等理论问题。 |
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Abstract: By the study of system security, during implement the MIS,the paper shows a way of system management, including two key techniques in user popedom and system log, and shows some discusses in familiar problem of system management.
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文摘:在开发管理信息系统的过程中，通过对系统管理安全性方面的研究，提出了利用权限口令和操作码2种关键技术来完成系统权限管理和日志管理的方法，并就系统管理中几个常见的问题做了一定的探讨和分析。 |
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Abstract: By the using of the theory of plastic mechanics, a calculated formula of ultimate strength of shearing stress is obtained for metallic materials with torsion of circular shaft,and the experimental results about low-carbon steel are given.
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文摘:利用塑性力学基本理论,建立了具有塑性屈服及强化特性金属材料圆轴扭转的剪应力强度极限的计算公式,并给出了低碳钢剪应力强度极限的处理结果. |
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Abstract: By using ELES model by LUCH, from the positive analysis of Chinese urban households' consumption patterns in 1998,such conclusions can be drawn: The index of marginal propensity to consume in urban households is 0.6166, among which that of margi
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文摘:用卢茨的ELES模型，对1998年中国城镇居民家庭消费结构进行实证分析，结果显示：中国城镇居民家庭的边际消费倾向为0．6166，其中食品的边际消费倾向高达0．1592；收入弹性方面，家庭设备用品及服务、杂项商品、交通通讯均大于1，其他小于1；各项商品及服务的自价格弹性比较大，而互价格弹性比较小。 |
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Abstract: By using absorbing Markov chain, this paper studies a professional qualyfications structural system of the teaching staff in a given college, establishes the transition digraph of the system and, by using the trnsition matrix, provides statistic
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文摘:本文应用吸收马尔柯夫链分析了高校教师的职称等级结构系统，建立了系统的状态转移图，并用状态转移矩阵讨论了学校每年应在各等级中如何调整人员数量，才能保持某种理想的职称等级结构的稳定性. |
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Abstract: By using computer image processing technology, features of weed in the corn seedling field were analyzed, the field weed was recognized from the corn seedling, the weed position and growing state were found out.
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文摘:利用计算机图像处理技术分析了玉米苗期田间杂草的特征量，识别出田间杂草并确定了杂草的位置和生长状况。 |
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Abstract: By using engineering example this paper briefly introduces the application and constrction method of ferroconcrete filling pile in the transformation of old buildings.
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文摘:以工程实例简要介绍了钢筋砼灌注桩在旧楼改造中的应用及具体施工方法。 |
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Abstract: By using probability statistical method,the probabilities of earthquakes occurrence for various magnitudes in East China from 1999 to 2005 are given.The results indicate that this region is still in seismologically active period.The probability
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文摘:利用概率统计方法，对华东地区1999～2005年发生不同震级的地震概率进行预测，结果表明，该地区仍处于地震活跃时段，发生5级地震的概率不断增加，到2000年发生5级以上地震的平均概率为0.5左右，但近1～2年内发生6级以上地震的可能性不大，发震概率仅为0.15。 |
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Abstract: By using the correlation analysis of cotton climatic output and temperature elements of different temperature types and different length periods of time in Akesu cotton region, the results obtained indicate (1) using daily temperature elements o
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文摘:通过对阿克苏棉区棉花气候产量与不同长度时段、不同类型温度要素的相关分析，结果表明：(1)采用不同长度时段的日温度要素与棉花气候产量进行相关分析，比采用旬温度要素的工作更细致，更合理，更易找出对棉花气候产量影响较大的有生物学意义的较佳时段和温度要素；(2)在平均温度、最高温度及最低温度3个温度要素中，以最高温度对棉花气候产量的影响最大，其次是平均温度，最低温度最小；(3)春末及夏季的低温对阿克苏棉区的棉花气候产量形成具有一定的制约作用。 |
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Abstract: By using the method of brainstorming, expert interviewing and questionnaire, the author describes the general developing trend of physical education from the angles of ultimate goals, the hot issue of reforms and operation way, that is cultivati
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文摘:运用头脑风暴法、专家访谈法、问卷调查法，从学校体育的终极目标、改革热点、运行思路等层面上，描述总体上的发展趋势，即育人与健康、时间与空间、兴趣与成功，并分别论述了教学改革、群体活动、校际竞赛的发展走向，即选项与乡土、分享与共享、公平与公关。 |
