基于系统动力学的冷链物流配送效率因素分析及提升策略

为探索冷链物流配送影响因素,提高企业配送效率,从冷链企业、冷鲜产品及客户三方面分析冷链物流配送影响因素及相互关系,据此构建冷链配送系统及其子系统因果关系图;以冷鲜肉配送为例,将实载率、流通损失率、准时交货率等作为配送效率量化指标,同时特别考虑车辆调度、装车以及运输过程中的不确定性因素,构建配送效率影响因素系统动力学模型。利用该模型对系统进行投资分析、供需分析、载货分析,并依据分析结果提出合理的配送效率提升策略。     

略论费密诗歌意象特征

费密,明末清初重要的遗民诗人,他的诗歌具有极高的艺术成就和历史价值。由于时代和自身的因素．费密的诗歌在整体上表现出清疏健雅的诗歌风貌。这种风格形成与费密诗歌中意象体系的构建有很大的关系。在意象的色调上,费密喜欢青、白等冷色调,在意象的选择与体系构建上,费密诗歌表现出“清”、“疏”特色。     

长三角滚灯艺术的历史传承与现实价值研究

文献资料法和访谈法,对以浙江海盐为中心的滚灯项目的历史流变进行了研究。滚灯项目作为非物质文化遗产,包含很多体育元素,并具有鲜明的健身功能和精神文化内涵,是一项值得推广的体育项目,对新农村体育文化建设具有积极的推动作用。     

Water immersion as a recovery aid from intermittent shuttle running exercise

Abstract

Aim: To investigate the effect of different water immersion (WI) treatments on recovery from intermittent shuttle running exercise in comparison to an ecologically relevant control.

Methods: Forty males performed 90 minutes intermittent shuttle running, following which they were assigned to either: (1) 12-min standing WI at 12°C; (2) 12-min standing WI at 35°C; (3) 2-min seated WI at 12°C; (4) an ecologically relevant control consisting of 12 minutes walking at 5 km h^?1. Muscle soreness, maximal voluntary contraction (MVC) of the knee flexors and extensors, hop distance, creatine kinase activity and myoglobin concentration were measured before exercise and in the 168 hours following the intervention. Between-group differences, time effects and interaction effects were investigated by mixed-model ANOVA.

Results: The shuttle running exercise induced an increase in muscle soreness (1, 24, 48 and 72 hours post-intervention) creatine kinase activity and myoglobin concentration (post-exercise and 1, 24 and 48 hours post-intervention), and reduced MVC of the knee extensors (11% reduction at 24 hours, remaining reduced at 48 and 72 hours), flexors (24% reduction at 24 hours, remaining reduced at 24, 48, 72 and 168 hours), and hop distance (24 and 48 hours). However, no between-group differences or interaction effects were evident for any of these parameters.

Conclusion: The WI protocols investigated were not better than light exercise in facilitating recovery from shuttle running exercise. Future studies examining the efficacy of WI as a recovery intervention should include a representative control condition to increase their relevance to sporting populations.     

梯形翅片状薄壁半圆锥天线的加工工艺

针对一种特殊结构外形的天线,利用材料的塑性变形,采用普通工艺和特种工艺相结合的方法进行加工。文章介绍了该天线加工成形的详细过程。     

Performance Enhancement and Politicisation of High-Performance Sport: The West German ‘air clyster’ Affair of 1976

While the politicisation of high-performance sport is perceived to represent one of the driving forces behind doping, we know not much how exactly the cold war in sports has affected sporting misconduct in western societies. Therefore, we propose here to distinguish between ideological and institutional politicisation and explicit and implicit acceptance of dubious practices. We apply our framework to analyse the West German ‘air clyster’ affair of 1976 in order to examine to what extent the politicisation of high-performance sport during the cold war affected the search for innovation in performance enhancement. We find that political pressure for improved competitiveness in West German sport had served to create a semi-autonomous high-performance sport sector in West Germany where blurred lines of accountability allowed questionable practices to prosper. While the public despised the use of questionable methods, sportive nationalism served to eclipse dubious practices. West German sport leaders adopted insofar a permissive attitude towards questionable practices as sporting misconduct was not sanctioned. Thus, our results strongly suggest that sport's politicisation during the cold war facilitated the search for performance-increasing methods in western societies.     

试析20世纪50年代“大规模报复战略”衰落的原因

“大规模报复战略”衰落是冷战过程中一个重要的历史现象。其衰落原因有四:首先,战略本身的缺陷以及由此带来的各种批评与内部分歧使其渐入困境;其次,苏联陆海空“三位一体”的战略核力量的形成使其失去了存在的物质技术基础;再次,以罗素和爱因斯坦倡导的反核反战运动在一定程度上推动了美国军事战略的转变;最后,盟友时该战略效能的疑虑与在历次危机中对美国用强的反对,使美国不得不改弦易辙。     

论冷战结束以来的国际秩序问题

冷战结束以来，国际秩序的重建问题备受注目。尽管众说不一，但总的来讲，形成了两种不同的国际秩序观，客观上反映出不同的国家利益和价值取向。这两种秩序观正在以不同的方式对世界形势的发展发挥作用，并对未来国际新秩序的形成产生深远影响。     

冷季型混合草坪的养护与管理

要使冷季型混合草坪产生良好的景观效果 ,首先要对草种进行优化组合 ,其次浇水、施肥、修剪、打药等要讲科学 .另外 ,加强宣传教育提高群众的保护意识 ,也不可忽视     

渐开线花键冷搓成形非线性有限元分析

讨论了渐开线花键冷搓成形过程中的几何非线性、状态非线性、材料非线性及工件与刀具的接触摩擦因素,借助于有限元软件ANSYS对渐开线花键冷搓成形过程进行了成功的数值模拟,其应用将有助于花键冷搓成形新理论与相关新工艺进一步完善与发展.