竹条加筋土的大尺寸直剪试验研究

为确定竹条加筋砂土的筋土界面工作机理,进行了大尺寸直剪试验。将厚度为5 mm的竹材分别制成长度为20,40,60 mm,宽度为10 mm的竹条,并分别按0.2%,0.4%,0.6%,0.8%,1.0%,1.2%的质量百分含量加入到砂土中,对加入竹条的砂土进行大尺寸直剪试验研究。结果表明:与纯砂相比,竹条加筋土的抗剪强度明显增强,峰值强度和残余强度均有所提高;竹条加筋土的黏聚力和内摩擦角均有所增加,其中黏聚力变化较大,内摩擦角变化较小;竹条加筋土的峰值抗剪强度随着竹条尺寸和竹条加筋率的增加呈现先增加后减小的规律;尺寸为10 mm×40 mm且质量百分含量为0.8%的竹条加筋砂土效果最佳。     

内聚与开放:花生对英租时期威海乡村社会的影响

在英租威海卫时期,花生的推广使得威海乡村社会的封闭状态产生了变化.在花生的种植、管理、收获及销售过程中,销售这个环节加强了村庄对外界的依赖,体现出开放性,种植到收获各个环节中的生产联合则基本上局限于村庄内部,仍保持传统的内聚性.这种传统与现代的结合,体现出当时威海乡村社会的一种变化趋势.     

从衔接和连贯谈阅读教学

衔接和连贯是语篇中的两个定义,通过分析衔接和连贯在阅读中的作用,提出以语篇为中心进行阅读教学,使学生了解语篇连贯与衔接的最基本知识,从而更准确地掌握主题与作者的意圈。     

Ready or Not? Homosexuality,Unit Cohesion,and Military Readiness

The U.S. military argues that homosexuals are unfit for service because their presence compromises military readiness and unit cohesion. Based on this assumption, it continues to discharge homosexuals at an average rate of approximately 925 per year. On the other hand, the extant research suggests that homosexuals are no more disruptive to military life than their heterosexual counterparts. By integrating the legal and scientific literature, this paper examines the soundness of the military’s assumptions and aims to improve our understanding of the issues involved. Within this context, the efficacy of the military’s “Don’t Ask, Don’t Tell, Don’t Pursue” policy and whether it is in the best interest of the military and its soldiers and sailors is discussed.

欧洲模式：稳定、凝聚与经济增长

中国发展道路的独特性引起了国内外的普遍关注,但从欧洲模式研究的角度分析中国发展道路尚不多见。文章在综述国内外研究的基础上,分析欧洲模式的内涵和特征;从理论和实证两个角度分析欧洲稳定、凝聚与经济增长之间的关系;总结欧洲模式对中国发展道路的借鉴意义体现在两个方面：价格稳定有利于长期经济增长;公平和效率不是必然替代,而是相互促进。     

浅议高职实践课程内容与国家职业标准的衔接

实践教学是高等职业教育的显著特征,将高职实践课程内容与国家职业标准衔接,是高等职业教育自身的特性和实现培养目标的要求,有利于学生实践能力的培养,增强学生的核心竞争力,满足市场和产业对高素质技能型人才的需求,同时也促进高等职业院校实训基地和双师型教师队伍的建设和发展。     

Do ongoing networks block out new friends? Reconciling the embeddedness constraint dilemma on new alliance partner addition

Research Summary: This study addresses a theoretical dilemma regarding how alliance network constraint (reflected by network cohesion) affects a firm’s alliance formation with new partners. Using a network pluralism approach, we separate a firm’s ego alliance network into two activity‐based networks—an exploratory network and an exploitative network—based on the primary value chain activity involved in each alliance. We argue that the cohesion of exploratory or exploitative networks has an inverted U‐shaped effect on the addition of new partners in the same activity‐based network, and a positive effect on the addition of new partners in the other network. Results based on data from the biotechnology industry largely support our predictions with one exception. Our study contributes to both scholarly understanding of network embeddedness and alliance practice. Managerial Summary: The structure of firms’ ongoing alliance networks may have paradoxical implications for their efforts to search for and form alliance with new partners. That is, when a firm’s alliance partners are tightly connected with each other, the cohesive network tends to both encourage and impede the focal firm to add new partners. We resolve this dilemma by showing that when a firm is deeply entrenched in a cohesive alliance network conducting a certain type of activities (e.g., R&D activities), it may not easily add new R&D alliance partners. However, it may still be able to escape from the cohesive R&D alliance network by seeking new partners conducting other activities (e.g., manufacturing activities).