Knowledge-based Intelligent Decision-making System for the Safety of Rockets

With the progress of science and technology, the astronautics has obtained great development and researched in many countries, the problem on rocket safety control is important during the rocket launching proceeding, and is also the focus of every space country. At first, the importance of rocket safety control is introduced and the characteristics of the existing system for the safety of rockets are analyzed. After indicating its disadvantages, the design idea, system framework and method for realization of the knowledge-based intelligent decision-making system are proposed to improve certainty and authenticity of safety decision, containing correspond knowledge and adopting the technology of intelligent decision and reasoning on AI.     

Corporate Dividend Policy Under the Change of Earnings in China

Using non-parameter test and multinomial logit regression, this paper studies the dividend policy and behavior empirically. The results show that the change of the earnings of firms affects their dividend policy. When the EPS of the firms increase, the probability of choosing not to pay cash dividend is maximal, yet when the EPS of the firms decrease, many firms choose not to pay cash dividend or choose to increase DPS, so that the information that the relevant firms have great expectation is transmitted to the market. Furthermore, this paper also finds that the successiveness of the dividend policy of the listed firms in China is not good.     

Effects of Stitcing on the Buckling Strength of Stitched Composite Laminates

A theoretic model is proposed based on the mechanism of the buckling failure of the stitched composite laminates containing delaminations. The buckling strength of the stitched composite laminates under the in-plane compressive load is predicted. The critical percentage elongation of the stitching thread is taken into account as a control parameter of the buckling failure. The energy method is used to calculate the buckling strength of the stitched composite laminates, and the minimal potential energy is used to calculate that of the unstitched composite laminates. The result shows that the buckling strength of the stitched composite laminates is larger than that of the unstitched composite laminates. The effects of stitching technical parameters such as the stitch thread diameter, stitch step and stitch space on the stitched composite laminates are also analyzed.     

Incentive Mechanism for Team Cooperation Based on Implicit Side Contract

Aiming at the free-riding problem in team incentive, this paper designs a dynamic incentive mechanism based on implicit side contract with dynamic game theory by introducing the reasonable assumption that there is horizontal monitor in team production. The theoretic analysis indicates that the dynamic incentive mechanism, in which a strict group incentive compatibility contract is taken at the first stage and an individual incentive compatibility contract is taken at the second stage, can implement team cooperation uniquely in the general condition of risk aversion and stochastic production by only two stage repeated game.     

Empirical Analysis on Stock Market and Real Estate Market Wealth Effect in China

Based on the Modigliani's Life-Cycle Hypothesis of consumption,and relevant data,the paper empirically studies stock market and real estate market wealth effect in China by using the method of unit root test and cointegrating regression.The results show that,regardless of short-run effect and long-run effect,the stock market wealth has significantly negative effect on civil' consumption level,but real estate market wealth or housing market wealth has significantly positive effect on civil' consumption level.     

低温敏优质光温敏核不育系茂康S 10的选育

茂康S 10是贵州好茂康农业科技有限责任公司用360 S为母本,优质中籼稻金麻粘为父本杂交选育而成的两用核不育系,该不育系株叶型好,不育起点温度23.5℃,不育期长,可繁性好,柱头外露率高,异交结实性好,配合力强,于2003年7月通过贵州省审定。配组的两系杂交稻茂优201于2005年6月通过贵州省审定。     

基于AMEsim的柴油机二甲醚供给系统仿真研究

借助AMEsim仿真软件,建立了ZS1100柴油机机械式供油系统模型,并进行了各个运动件的动态响应特性仿真和分析,得到了柴油机燃用二甲醚供给系统的改进结果,对柴油机燃用二甲醚的供给系统的研究和开发提供了一个有效的工具。     

基于整车性能的悬架匹配优化设计

以某多功能商务车为研究对象,利用ADAMS软件建立了整车多刚体动力学模型,并以车身垂直加速度和角加速度为目标函数对悬架系统进行优化设计。将优化前、后整车性能仿真结果进行了对比,结果表明优化后的悬架参数能有效地改善车辆的行驶性能。研究结果为虚拟样机技术在车辆工程中的实际应用提供了参考。     

小麦对行免耕播种机试验研究

为解决一年可熟区小麦免耕播种作业的技术难题，提出了小麦对行免耕播种的思想；设计了2BMD-12型小麦对行免耕播种机．在玉米行何播种小麦．避开玉米秸秆和根茬。采用了新型高效的带状粉碎防堵机构，防堵性能优良。田问性能试验表明：2BMD-12型小麦对行免耕播种机在玉米直立秸秆和大量秸秆覆盖下。如能实现对行，可以顺利进行播种作业，满足作业质量和作物高产对施肥量的要求．适合我国中小地块、中小功率的特点。