往复压缩机新型中间填料的研制

针对传统往复压缩机密封填料使用寿命短、密封效果不佳的状况,通过对中间填料结构的改进,使其与传统填料相比具有更好的密封性能和使用寿命,较好的解决了压缩机的密封问题。     

矩形布局的启发式优化策略

利用可行域算法求解矩形布局问题,通过调整矩形布入形态,改变其单一的可行域形式增大其解空间。算例结果表明,矩形调整对布局结果影响有规律,利用可行域算法求解矩形布局问题,简便、快捷、灵活、适应性强,从而能够灵活快速地获得更优异的矩形布局排布方案指导工程实践。     

一种改进的多值遗传算法研究

该文通过在多值遗传算法中引入模式基因来引导种群的搜索方向,算法在运行过程中不断搜索基因的各种组合,是一种有导向性的组合,模式基因的提取和利用加强了基因组合的导向性,有效提高算法的搜索效率。仿真实验表明了改算法的有效性。     

颗粒物质随机Packing现象的研究

通过分子动力学模型,数值模拟了二维系统中颗粒物质的堆集过程以及系统的覆盖率.考虑了边界为正方形和圆形两种不同情况,我们发现都出现多晶结构,与系统边界无关.在系统趋于饱和状态的情况下,系统粒子数越多,覆盖率越大.在粒子数相同的条件下,正方形边界的覆盖率要比圆形边界的覆盖率大.     

Football,Masculinities and Health on the Gaza Strip

This analysis is built on two questions: first, what discourses of a masculinity of resistance maintaining a sense of normality under abnormal conditions are drawn from the interviews of the footballers referred to in this article, and second, to what extent is football experienced as and felt to be a ‘free space of health’ for the Gaza players in a context of war and blockade and in relation to the situation before 2007. To answer these questions, the author interviewed, during July 2011, male athletes, coaches and managers in nine football clubs in Khan Younis and Gaza City. She also conducted 18 qualitative interviews during November 2011 with footballers in the two top Gaza leagues in Rafah, Khan Younis, Gaza City and Shati Prison Camp.