铝箔对线缆电气性能的影响

随着大数据时代的到来,抗干扰能力强的屏蔽数据线越来越多。本文从屏蔽层的厚度、包覆方式等角度出发,通过试验,分析了解了线对屏蔽中,铝箔对线缆的电气性能的影响与意义。     

软弱地层盾构隧道施工对土体的扰动分区及控制

城市地铁工程多数由盾构隧道作为连接通道,将沿线车站连成线路,最终形成复杂的轨道交通网.本文以软土地层盾构隧道施工对土体的扰动变形及控制为研究对象,从盾构施工对土体扰动机理、施工扰动影响分区及控制措施、Peck影响分区及工程案例等方面来详细论证,研究成果可为类似工程提供经验借鉴.     

War of perception: a Habermasian discourse analysis of human shield newspaper reporting during the 2014 Gaza War

In 2014, as Arabs and Israelis fought a deadly and destructive 50-day military battle in Gaza, a simultaneous war of perception was being waged in American news media. Israel claimed that Palestinian militants were using civilians as human shields. So far, however, no critical research has inquired as to whether these allegations were reported scrupulously in mainstream American news media. Thus, using a Habermasian critical discourse analysis, this study examined how five of the largest U.S. newspapers reported accusations of Palestinian human shielding. The findings herein reveal how fairly these media outlets cover one of the most enduring international struggles in modern times: the Middle East conflict. After all, as this paper will discuss, these publications play a potentially crucial role in explaining to the public the complexities of this highly destructive and deadly region of the world, which ultimately could allow citizens to participate more fully in an informed, democratic solution for peace.     

磁荷与磁介质球系统磁标势研究

尝试用数学模型去解决磁介质与磁荷系统的磁化、磁性质等问题，并用统一的、严谨的理论框架去解决静磁场问题。通过建立磁荷与磁介质球系统磁标势的数学模型，从理论上构建磁荷与磁介质球系统的一般框架，利用该模型可以引导分析均匀磁场中磁介质球的磁标势，磁屏蔽以及均匀磁化铁球等问题。借此还可以进一步分析磁荷与磁介质系统的磁性质、磁场、磁力等问题。解决了磁荷、磁矩与磁介质系统磁场及磁力计算方法等问题，为进一步研究磁单极与磁场、磁介质之间的性质和关系奠定理论基础。     

Risk identification and risk mitigation during metro station construction by enlarging shield tunnel combined with cut-and-cover method

Constructing a metro station by enlarging shield tunnels combined with a mining/cut-and-cover method provides a new method to solve the contradictions of construction time limits of shield tunnels and stations. As a new-style construction method, there are several specific risks involved in the construction process. Based on the test section of Sanyuanqiao station on Beijing metro line 10, and combined with the existing methods of risk identification at present, including a review of world-wide operational experience of similar projects, the study of generic guidance on hazards associated with the type of work being undertaken, and discussions with qualified and experienced staff from the project team, etc., the specific risks during the construction process of the metro station constructed by enlarging shield tunnels combined with the cut-and-cover method are identified. The results show that the specific risks mainly come from three construction processes which include constructing upper enclosure structures, excavating the soil between shield tunnels and demolishing shield segments. Then relevant risk mitigation measures are put forward. The results can provide references for scheme improvement and a comprehensive risk assessment of the new-style construction method.     

地铁盾构施工同步注浆加固质量的控制

地铁盾构施工穿越软弱、富水地层及高层建筑物时,管片壁后同步注浆加固质量直接影响管片的拼装效果及地层沉降。为提高壁后同步注浆加固质量,本研究基于美旗站—水口站区间盾构隧道的施工项目,分析影响同步注浆加固质量的因素,从同步注浆材料选择、主要技术参数设定、施工流程优化等方面进行控制,保证管片的拼装质量,减小地层沉降,以期为类似工程施工提供借鉴。     

石家庄轨道交通3号线西三庄站-水上公园站盾构施工技术研究

以石家庄轨道交通3号线西三庄站-水上公园站盾构区间施工为例,将如何进行盾构机选型,盾构机关键设备进行了讲述。并详细的论述了区间盾构施工技术的控制施工工艺及方法,全过程的将盾构机施工主要技术进行了讲解,文中方法和技术可为国内外类似的工程作参考。     

无形资产如何影响高新技术企业债务融资？——价值创造、抵押价值与税盾效应

以2007—2019年被认定为高新技术企业的A股上市公司为样本,构建并行多重中介效应模型检验无形资产对债务融资的影响。结果表明,持有无形资产有助于高新技术企业获取债务融资,抵押价值是债务融资能力形成的核心原因,税盾效应负向影响债务融资水平,无形资产价值创造能力未能发挥债务融资支持作用;国有高新技术企业无形资产的债务融资能力主要来源于抵押价值,民营高新技术企业则来源于价值创造能力;高新技术企业无形资产债务融资能力来源于技术类无形资产的价值创造能力、其他类无形资产的抵押价值,非高新技术企业则来源于使用权类无形资产的价值创造能力与抵押价值。     

电子实验中的干扰及抑制

对电子实验中最常见的干扰问题进行了研究分析，并提出解决问题的一些方法。     

论传统容隐制度的现代重构——从法学、伦理学的视角

“亲亲相隐”最开始是作为一种伦理准则而存在的,在漫长的历史演变中逐渐成为一项法律制度。试图以法学与伦理学视角考察这一制度,论述了传统容隐制度的合理性和弊端,对区别于传统的“亲亲相隐”制度的现代容隐制度的建立做出一些探讨。