一元线性回归系数比值不确定度的评定

分析一元线性回归系数的相关性,导出一元线性回归系数比值不确定度的计算公式,指出了某些文献中有关回归系数比值不确定度评定存在的问题.     

从城市走向农村:河源苏区的革命历程

从城市走向农村,是中国革命道路的新探索,是马克思主义中国化的进程,也体现出毛泽东"走农村包围城市最后夺取全国政权道路"策略的英明。河源苏区的革命历程是中国共产党革命历程的一部分,见证并推动了中国革命深入和转向的关键步伐。     

锥形光纤的分析与仿真

通过理论分析和仿真试验,研究了锥形光纤的几何形状对锥形光纤的传输损耗和耦合效率的影响。用几何光学的分析方法,说明了光信号在锥形光纤中的传输损耗远低于同类型的圆柱形光纤;仿真试验研究了光源与光纤的相对位置、锥形光纤的尖端半径、锥形光纤的锥角大小对锥形光纤耦合效率的影响。     

输电线路防雷评价模型及管理系统设计

通过相关影响线路耐雷水平各项因素分析,并借助计算机辅助设计管理系统,建立防雷评价模型,得到综合比较整体评价结果,同时以某一改造工程实例加以验证,从运行情况看,改造后的线路工程达到了预期目标,有效地减少了线路雷击.     

通过带有磁性杂质介观环传输的Aharonov-Casher振荡

Aharonov-Casher oscillasions of transmission through a mesoscopic ring with a magnetic impurity is investigated.Both spin-dependent transmission and reflection coefficients of spin-state electrons at zero-temperature are calculated as a function of the textured electric fields and its title angle in the present of spin-flipper scattering.It is found that the spin-exchange interaction can destroy intermittently periodic oscillations of spin-up transmission and reflection coefficients within some small ranges in the adiabatic region of quantum phase.However spin-down transmission and reflection coefficients appear periodic AC oscillations.The calculated results manifest that spindown transmission and reflection coefficients have the same perfect oscillation patterns.In the nonadiabatic region, the behavior of the anomalous AC oscillations are depedent on the difference between the tilt angle of spin and that of texture electric field.     

Deterministic and randomized scheduling problems under the lp norm on two identical machines

Parallel machine scheduling problems, which are important discrete optimization problems, may occur in many applications. For example, load balancing in network communication channel assignment, parallel processing in large-size computing, task arrangement in flexible manufacturing systems, etc., are multiprocessor scheduling problem. In the traditional parallel machine scheduling problems, it is assumed that the problems are considered in offline or online environment. But in practice, problems are often not really offline or online but somehow in-between. This means that, with respect to the online problem, some further information about the tasks is available, which allows the improvement of the performance of the best possible algorithms. Problems of this class are called semi-online ones. In this paper, the semi-online problem P2|decr|lp (p＞1) is considered where jobs come in non-increasing order of their processing times and the objective is to minimize the sum of the lp norm of every machine's load. It is shown that LS algorithm is optimal for any lp norm, which extends the results known in the literature. Furthermore, randomized lower bounds for the problems P2|online|lp and P2|decr|lp are presented.     

论市场机制在提高高等教育资源利用效率中的作用

良好的运行机制是提高高等教育资源利用效率的必要条件。普通高等教育的非营利性、外在性等特点决定了市场机制不能在高等教育领域发挥基础性调节作用，高等教育不能市场化。但高等教育领域可以引入市场机制，在生源市场、资金市场、劳动力市场等引入市场机制，有利于提高高等教育资源利用效率。     

基于马尔可夫模型的高校图书馆学科评价服务研究

随着"双一流"建设总体方案的提出，科研成果越来越受到重视，高校图书馆开展学科评价服务，对于提升图书馆的服务和地位具有至关重要的意义。本文在分析了吉林大学2010-2016年发表的论文总体情况的基础上，选取论文发表总量前10名的学科为研究对象，运用文献计量学方法和马尔可夫模型分析方法，与传统的评价指标相结合，构建相应的综合评价指标，消除学科间的基础差异，分析得出各个学科的发展速度和发展趋势情况。     

固化土强度特性试验研究

应用不同固化剂对加固软土的作用进行了试验，分析和讨论了固l和固2加固土在不同掺入比和龄期时强度的变化规律及应力一应变特性．从整体加固效果分析看出，固2加固土效果优于固l加固土，两种固化土的最佳掺入比在12％～15％，可在软土地基处理和实际工程中应用．     

中国愿油定价机制改革的实证检验与思考——基于大庆原油的分析

我国的原油定价机制尚缺乏研究。回归检验了Minas原油至我国大庆原油的价格传导关系．讨论了大庆原油价格的形成特点，并归纳出国内外油价波动传导路径。尽管原油价格之间具有长期一致性．但背离指标揭示了Minas原油价格具有异常波动频繁而剧烈的短期特征．这种蕴舍风险的价格变化同样反映在大庆原油的价格上。进而分析了油价波动对经济运行的不利影响．提出了改进我国原油定价机制的建议。