An Analysis of the Factors Impacting Employee＇s Specific Investment

The amount of specific investment from employees is limited, and the reasons of the under-investment from employees are analyzed in this paper. Based on the relationship of the specific investment and the employee demission, an empirical study has been conducted focusing on the factors influencing the employee turnover and the specific investment. A theoretical model of the factors influencing employee＇s specific investment is given.     

Analysis on God＇s behavior from the teachings of Mosaic Law

the paper focuses on the first 5 books in Old Testament——Genesis,Exodus,Leviticus,Numbers,and Deuteronomy in the Holy Bible,which is also called Mosaic Law.Since it had a significant role in the Sacred Scripture,the teachings in those books would be the great material for analyzing God＇s behavior.There are 6 main teachings in the books,and God＇s thought and behaviors will be explained simply and briefly in both historical and text perspectives.     

Analysis of Voltaire＇s Candide—— from the Perspective of Gender Roles

This essay analyzes the famous French writer＇s novel Candide from the perspective of gender roles. It introduces some literary terms related to gender, and explains my understanding of the gender roles some characters have played from the aspects of wars and masculinity, Candide and masculinity, female characters and femininity, and Candide related to feminism.     

Experimental study on exercise＇s intervention to the physique condition of the elderly

为了探讨增强老年人健康水平的途径和方法,利用运动处方对老年人进行12周的身体干预实验,结果显示：老年男性心肺功能和肌肉力量出现显著性提高。老年受试者的柔韧素质都得到了提高,老年女性提高得更显著些;男女老年人的体重指数和腰臀比的变化不大,而男性老年人的臀围有所减小。结果表明：该运动处方对于增进老年男性的心肺功能和肌肉力量切实有效,对改善老年人的体型和身体成份可能有所帮助;设计的柔韧性练习对老年女性更具显效。根据实验结果建议：促进老年人健康状况应根据自身的情况进行选择性锻炼。     

Analysis on Certain Speech of Aristotle＇s Ethos,Pathos and Logos

亚里士多德的修辞学对语言分析有重大影响。他认为一篇好的说服性的文章应该需要以下三个方面ethos（人格诉诸）,pathos（情感诉诸）,和logos（逻辑诉诸）。本文通过对某一篇演讲稿的分析探讨这三方面是如何应用的。     

Computer Simulation on Metallic Card Clothing Garnett Wire Teeth＇s Temperature Field ＆ Structure Field in the Process of Quenching Treatment

The quenching process of garnett wire teeth of metallic card clothing heated by flame was researched by use of 3-D finite element method and the equation of boundary condition was established by making use of a model of artificial neural network. The transient temperature field, phase transformation in the heating process, the quenching microstructures and the hardness distribution on quenched garnett wire teeth of metallic card clothing were simulated. The result shows that the maximum error of the hardness between the simulative value and the actual measuring value is 8.0% on only one testing point and errors are all less than 3.0% on other testing points.     

Sequencing and analysis of the complete mitochondrial DNA of Russell＇s snapper （L. russellii）

The entire mitochondrial DNA sequence （mitogenome） of Russell＇s snapper （Lutjanus russellii） was determined using long PCR and primer-walking methodology, representing the first complete mitogenome accessioned for Lutjanid fishes （16,505 bp, GenBank Accession No. EF514208）. The mitogenome was similar in gene composition and order to those of other vertebrates, having 37 structural genes, i.e., two ribosomal RNAs, 22 transfer RNAs, and 13 protein-coding genes. Phylogenetic analyses based on the mtDNA sequence of Russell＇s snapper supported a close relationship between Lutjaninae and Caesioninae, consistent with taxonomic hypotheses based on morphology. More studies utilizing mitogenomes are needed to resolve high-level relationships among snappers.     

Motion Regular Analysis and Its Simulation of the Rodless Drilling Unit's Guiding & Positioning Board

To analyze the stress of the guiding & positioning board and the effectiveness of the guiding & positioning device, aeenrding to guiding & positioning device's operational principle and structure, the guiding & positioning board's motion regular was analyzed bydiagrammatical method based on 2 postulated conditions. Considering about the working conditions' change, simulations in 5 different kinds of working conditions were done to cheek the correctness of the motion regulars obtained by diagrammatical method. Simulation results prove that the motion regulars are right, the postulated conditions have no effect on the obtained motion regulars. According to the simulation results, the motion processs's characters were drawn out at the same time.     

新型浮式钻井生产储油平台涡激运动数值模拟及试验研究

利用数值模拟方法对浮式钻井生产储油平台(Floating Drilling Production Storage Offloading,FDPSO)涡激运动特性开展了研究.采用雷诺平均法求解Navier-Stokes(N-S)方程,运用DES(Detached Eddy Simulation)湍流模型及CFD(Computational Fluid Dynamics)动网格方法对FDPSO平台的涡激运动流场特性进行了模拟;同时采用1∶80的缩尺比物理模型,在上海交通大学海洋工程国家重点实验室的海洋工程水池中进行了模型试验研究.试验考虑了系泊系统以及平台不同自由度之间耦合作用对平台涡激运动的影响,并将数值模拟和模型试验结果进行对比,分析了新型多立柱浮式钻井平台流向和横向涡激运动时间历程、频谱特性、锁定现象等以揭示其涡激运动的内在机理,为该型平台的设计提供借鉴和参考.     

基于VB的平面连杆机构的运动分析与运动仿真

以VB编程语言为工具,在对平面连杆机构进行理论分析的基础上,建立了该机构的数学模型,编写出VB程序代码解答该机构的重要参数,并实现了从动件的角位移图、角速度图、角加速度图分析以及机构的运动仿真.     

悬移质泥沙运动过程模拟分析

为了实现悬移质泥沙运动过程的模拟分析,应用联合k-ε紊流方程和悬沙输运方程的单流体模型,采用有限体积数值方法对其离散求解,分别对净冲刷和净淤积试验算例进行了计算模拟,计算结果与试验结果吻合良好,说明该模型是正确有效的,可以用来模拟悬移质泥沙的运动问题.分别对两个试验中泥沙上扬和沉降的运动过程进行数值模拟,结果表明:净冲刷和净淤积试验中泥沙开始上扬和沉降直至稳定状态分别运行24 s和35 s.采用单流体模型可以有效地对悬移质泥沙运动过程进行数值模拟,为河流海岸工程中的水沙研究提供可靠的参考和依据.     

规则波中船舶操纵与垂荡、纵摇耦合运动模拟与特性分析

采用MMG分离模型的思路,在船舶六自由度操纵性运动方程中叠加波浪垂荡力和纵摇力矩,构成波浪中船舶操纵与垂荡、纵摇耦合动力学模型,用来模拟规则波中船舶操纵与垂荡、纵摇耦合运动特性。其中的波浪力由切片法计算,船舶航向保持采用PD控制模式。采用耦合动力学模型计算了某船在规则波中保持航向时的垂荡、纵摇运动,并与试验结果进行了比较。两者的幅频曲线形式上基本一致,间接证明了耦合动力学模型的有效性。进而采用该模型计算了该船在不同浪向角和航速下保持航向稳定的垂荡、纵摇运动,以垂荡、纵摇等值极坐标曲线形式表征了船舶规则波浪中操纵与垂荡、纵摇的耦合运动特性。     

五轴数控仿真刀具运动分析及应用

在五轴数控仿真过程中需要经过一系列的复杂的运动学变换,得到仿真过程中的刀具运动过程.而在刀路轨迹的生成过程以及刀具的运动过程中,由于曲面曲率过大或者步长过大以及旋转的影响,加工过程会出现较大的误差,需要对误差进行分析与控制,得到质量较高的加工曲面.本文通过分析机床运动学的变化,给出了机床运动变化过程以及刀具运动的过程,...     

40Cr钢的钻削力仿真与实验研究

通过单因素试验,研究了在40Cr钢的钻削加工过程中,不同切削参数对钻削力和扭矩的影响.通过大型金属塑性成形有限元软件Deform-3D对钻削过程进行仿真研究,并将仿真结果和实验结果作了对比.结果表明,在进给量不变的情况下,随着切削速度的增加,钻头所受轴向力和扭矩先变大后减小;在相同的切削速度条件下,随着进给量的不断增大,轴向力和扭矩几乎线性增大;钻削力和扭矩的仿真结果比实验结果略小,说明仿真结果具备比较高的可靠性,可以对实验结果起到近似的预测作用.     

双连杆双曲轴内燃机运动仿真分析

提出了一种通过虚拟运动仿真分析的方法对双连杆双曲轴内燃机进行了研究,通过程序语言建立了机构运动的数学模型,在计算机上实现了机构的运动仿真．在考虑实际加工因素的情况下,计算出了连杆和活塞内滑块在不同连接点时滑块偏转的角度．通过计算结果的比较,寻找出了使机构运动最平稳的参数．     

大范围运动的柔性曲线梁动力学建模及仿真

针对航天器等领域中应用柔性曲梁的动力学问题，基于有限元方法，将连续的柔性曲线梁离散化为具有12个自由度的空间梁单元模型．为缩减系统的运动学变量数目，将柔性曲线梁的物理坐标转化为模态坐标．在此基础上，依据Kane方程建立了作大范围运动的柔性空间曲线梁非线性动力学模型．动力学数值仿真的结果表明。对小曲率柔性曲线梁，其横向变形比纵向变形大得多．     

YAG激光在不锈钢上打孔质量影响因素分析

激光打孔是目前小孔加工中应用广泛的加工方法,其加工孔径可以小至几微米。本文利用YAG激光在1mm厚的不锈钢材料00Cr25Ni20上进行打孔试验,记录上下孔径的测量数据,并采用无交互作用的正交试验方法系统分析了激光脉冲能量、脉冲宽度、脉冲频率等因素对激光打孔上、下孔径的影响程度,为激光打孔工艺参数的选择提供了依据。