富水砂层盾构接收技术

针对富水砂层盾构接收易发生渗漏、涌砂、安全风险大等问题。在大量工程实践基础上,总结出以控制地下水为重点、坚持预防为主的施工理念,形成端头加固、止水帷幕、环箍注浆及止水装置的富水地层盾构接收技术,牢筑三道止水防线。技术成果在多项依托工程中成功应用,确保了该类地层盾构接收安全和风险可控。     

Close relationship with the supervisor may impede employee creativity by suppressing vertical task conflict

Leader‐member exchange as a form of supportive leadership is expected to foster employee creativity. However, empirical evidence suggested this relationship is complex. This study attempts to address this complexity by proposing and testing a curvilinear mechanism, which attenuates the overall positive effect of LMX on creativity by transmitting a curvilinear indirect effect via vertical task conflict. Results drawn from a sample of 276 supervisor–subordinate dyads provided support for the hypothesized curvilinear indirect effect. Specifically, LMX was found to negatively influence employee creativity by suppressing vertical task conflict for subordinates in high‐quality LMX relationships, while the indirect effect was not significant for subordinates in low‐quality LMX relationships.     

基于GA-BP神经网络的通信卫星效能评估模型研究

卫星通信作为未来联合行动的重要通信手段,其运用效能对联合行动的影响重大.该研究以通信卫星运用效能研究为切入点,通过对关键问题进行树状分解,建立了包含35个指标的通信卫星运用效能评估指标体系,基于GA-BP(Genetic Algorithm-Back Propagation)神经网络方法,构建了通信卫星运用效能评估模型.通过实际卫星工作过程中产生的数据对所建立的模型进行了验证,证明了该模型能够有效地评估通信卫星的运用效能.     

The influencing factors of satisfaction and lending intention in online lending investment: an empirical study based on the Chinese market

This paper develops a platform‐based influencing factors model which considers value perception, risk prevention measure, non‐default experience, trust and incentive gap, to better examine the impact of platforms on investors’ satisfaction and lending intention based on the Chinese market. The results reveal that the first four factors positively influence the satisfaction of the investors, while the incentive gap has a negative impact, and there is a positive association between investors’ satisfaction and lending intention. Some specific features of China’s online lending market are identified, which provides valuable insights for online lending platforms and the government.     

Crowdsourcing-based semantic relation recognition for natural language questions over RDF data

ABSTRACT

Natural language query systems over RDF data need to rely on the semantic relations in query. First, we propose the new crowdsourcing model that used to produce semantic relations dataset. The model not only inherits completeness of the iterative model and accuracy of the parallel model, but also saves human resources. Second, we mine the rules of semantic relation recognition from the correlations between dependency structures and semantic relations. Third, we propose an algorithm of semantic relation recognition for natural language query over RDF data, and experiments demonstrate that it can recognize more semantic relations than existing methods.     

The Effects of Search-Related and Purchase-Related Mobile App Additions on Retailers’ Shareholder Wealth: The Roles of Firm Size,Product Category,and Customer Segment

Mobile channel additions have been shown to increase consumer-brand relationships, brand satisfaction towards and overall purchasing from a retailer, but what is less apparent is whether shareholders are fully rewarded for retailers’ mobile channel additions. Results from an event study on 115 announcements relating to mobile app additions of publicly traded U.S. retail firms between 2009 and 2016 indicate that the stock market responds generally positively to mobile app additions, but specifically to the two mobile app addition types. Stock market responses to search-related and purchase-related app additions are moderated by firm size, product category, and target customer age. For announcements of search-related apps, the market responds more positively to product retailers than to service retailers, and to small firms than large ones. For announcements of purchase-related apps, the market responds less positively to firms that target younger customers than firms who do not especially target them.     

钢铁工业与现代服务业融合发展的案例分析

简要叙述了钢铁工业与现代服务业开展“两业融合”的重要意义,分别以宝钢、河钢为代表的国内钢铁企业和以浦项、蒂森克虏伯为代表的国外钢铁企业为例,对钢铁企业开展两业融合的做法进行了分析,最后针对两业融合发展提出了几点建议。     

浅谈我国银行保险的发展

伴随着加入世贸步伐的加快，中国金融业真正面临着国际化竞争所带来的巨大机遇和挑战。正是在这样的大背景下，最近一段时期，各保险公司纷纷与银行达成合作意向，合作内容包括代理保险、提供全方位的金融服务、资金网络清算、基本客户群的共建、金融创新、信息交流等方面。同时，各家保险公司的各种产品在银行和邮政的柜台上摆开了战场，一种全新的金融服务——银行保险，进入了人们的视野。这正是企业之间强强联合、优势互补、资源共享、以促进市场开拓和业务创新的必由之路，它必将推动我国保险业与国际保险业的接轨和新型业务产品的发展。     

从国际视角看中国如何调整经常项目失衡

2004年中国国际收支经常项目顺差680亿美元,占GD P的4.2%,预计2005年该项目顺差还将继续扩大。长远来看,适当减少经常项目顺差,有利于充分利用国内外资源,促进国内经济和对外经济协调发展(王信、马昀,2005)。中国已明确提出,对外贸易不以大额顺差为目标。通常人们多从进出口的角度来看经常项目不平衡问题,但实际上,中国经常项目大量顺差,一个重要的结构性原因是金融市场不发达,居民预防性储蓄较高,国民储蓄难以有效地转化为投资。简单地抑制出口、增加进口、允许人民币升值,以及增加政府投资等,对调整经常项目的作用都不会太明显。应加快…     

论青少年犯罪动向及对策

近几年,青少年犯罪案件呈突发性、偶发性,犯罪年龄降低,由单独型向团伙型发展的特点.其原因有家庭因素、学校因素、社会因素.预防和惩治青少年犯罪,需要全社会广泛参与,综合治理.