小芯样法及其他混凝土抗压强度试验对比研究

混凝土的质量是决定建筑工程质量的重要因素,而混凝土抗压强度是反应混凝土质量最基本、最重要的指标.混凝土抗压强度的现场检测方法目前常用的有回弹法、超声回弹综合法和钻芯法.而随着混凝土强度的提高,钢筋间距的加密,小芯样法也逐渐被越来越多的人重视和研究.本文针对回弹法、超声回弹综合法和小芯样法展开试验研究,分析回弹法、超声回弹综合法和钻芯法检测混凝土抗压强度与标准试块强度之间的关系.     

管理者金融危机经历影响企业金融化水平吗？——基于中国上市公司的实证研究

文章以我国2008—2017年非金融上市公司为样本，结合“烙印理论”，考察了管理者金融危机经历对非金融企业金融化水平的影响，研究发现：管理者的金融危机经历对其所在企业的金融化水平具有显著的正向影响，在一系列的稳健性检验后，该结论依然成立。且该效应在融资约束严重的企业和制度环境较好地区的企业中更加显著，而在金融危机期间遭受财务困境的企业中受到明显抑制。拓展的研究表明，经历过金融危机的管理者持有金融资产的动机并不单一，但获利动机更强烈。最后文章还发现，管理者的获利动机和管理者自信可能是金融危机经历影响企业金融化水平的关键作用机制。文章从企业微观层面拓展了非金融企业金融化水平的影响因素研究，并对企业管理者经历对非金融企业金融化的影响及作用机制研究进行了一定的探索。     

“好客山东休闲汇”背景下的滨海休闲安全探讨

休闲是一种生命的状态,是人的一种生活方式。滨海地区气候宜人,滨海休闲活动备受大众亲睐。需要关注的问题是滨海地带自然环境特殊,空间跨度较大,安全事故时有发生。山东省滨海资源丰富,"好客山东休闲汇"应运而生。山东省应着力制定和完善休闲安全规制,健全区域安全管理部门,加强休闲安全知识的宣传和培训等方面工作,做好安全预防、预警管控,提高休闲区域的安全管理水平,从而保障山东省滨海休闲活动的持续健康发展。     

小微机构以互联网方式接入金融信用信息基础数据库问题探讨——以吉林省为例

为支持小微机构健康、快速发展,中国人民银行长春中心支行按照省级平台一口接入的模式,积极组织小微机构有序开展接入金融信用信息基础数据库工作,但由于小微机构认识程度不够、业务管理不规范、接入费用高等因素,严重影响了接入进度。近期中国人民银行征信中心推出了互联网接入方式,并进行试点运行。以吉林省为例,分析接入模式转换时需要解决的问题,并提出相关政策建议。     

How to inhibit a partner's strong and weak forms of opportunism: Impacts of network embeddedness and bilateral TSIs

This study investigates the moderating effects of a firm's network embeddedness and a partner's transactional specific investments (TSIs) on relationships between the firm's TSIs and its partner's strong- and weak-form opportunism, and compares the efficiency among these moderator variables. The regression results suggest that (1) a firm's TSIs are positively related to partner's opportunism when network embeddedness and the partner's TSIs are relatively low; but (2) a firm's TSIs are negatively related to partner's opportunism when network embeddedness and the partner's TSIs are relatively high. Furthermore (3) network embeddedness is more effective in inhibiting partner's weak-form opportunism than in inhibiting strong-form opportunism resulting from the firm's TSIs. Finally (4) with regard to the relationship between TSIs and weak-form opportunism, the negative moderating effect of network embeddedness is greater than the negative moderating effect of partner's TSIs. This study explains reasons why conflicting views exist about the relationship between TSIs and partner's opportunism, reveals the differences in the moderating effects of network embeddedness and partner's TSIs, and makes new contributions to both transaction cost theory and embeddedness literature. It also provides, for firms involved in TSIs in a buyer–supplier relationship, insightful managerial suggestions about ways to reduce their partner's varying forms of opportunism.     

基于跨境社交平台的产品推广模式研究

论文调查分析了近年来热度较高的跨境社交媒体平台以及相关使用数据,利用相关性分析方法分析了多个平台的数据,在此过程中发现了各平台间具有相当高的互惠性,并运用互惠比例和推广方式适配度模型完成了对跨境社交平台的运行模式以及推广方式的对比分析,最终研究得出跨境社交媒体平台的产品推广模式。     

Vicarious warfare and dynamic efficiency of companies in the aerospace and defence industry

This study explores the economic performance that vicarious warfare can bring for the aerospace and defence industry. First, this study measures the performance of 22 companies using a nonradial dynamic data envelopment analysis model from 2011 to 2017. Second, this study evaluates whether vicarious warfare can influence the performance. The efficiency analysis suggests rooms for improvements meanwhile, the projection analysis suggests that market value should be significantly increased, and the number of employees should be reduced significantly. The regression analysis suggests that the number of times a country takes a side in wars would positively affect the efficiency of companies.     

From elite capture to marginalization of the poorest: a new social exclusion in anti-poverty programmes in China

Based on a case study of state-directed aid resources in anti-poverty programmes, we detected a new phenomenon of social exclusion in China. In a period of several years, a shift is observed from elite capture to marginalization of the poorest. This phenomenon occurs under the administrative pressure from the authoritarian state and the morbid democratic mechanism. Contemporary structural changes in economic and social culture also make it difficult for marginal people to escape from this predicament. From a social structural transformation point of view, we suggest that the marginalization of the poorest should be seriously taken into consideration in rural development programmes and policies.     

高管经管教育背景与企业内部薪酬差距

本文考察高管经管教育背景对企业内部薪酬差距的影响,并进一步分析了其内在作用机制.研究发现:经管教育背景显著提高内部薪酬差距.为控制潜在的双向因果关系,本文使用行业内其他高管的平均经管教育背景进行工具变量检验,结论依然成立.进一步的机制研究发现,具有经管教育背景的董事长,以及具有经管专业博士学位的企业高管所发挥的作用更大.且这一影响在非国有企业、资本密集型企业,以及非管制行业及低集中度行业中表现更为突出.本文结论为深入理解企业内部薪酬制度及其影响因素提供了经验证据.     

城乡融合的生态样本

城口县森林覆盖率达到70.2%,县内拥有大巴山国家级自然保护区、九重山森林公园和巴山湖国家湿地公园等三个国家级生态区。但城口耕地面积却只有6.8%,“九山半水半分田”的地形条件,限制了城口的发展。在城乡融合发展上,城口依托生态资源优势,走出了一条独特的生态之路。