“机械制图用计算机信息交换制图规则”中的若干问题探讨

分析讨论了ＧＢ／Ｔ１４６６５－９３《机械制图用计算机信息交换、制图规则》中存在的问题与错误,并提出了相应的修正建议。     

四川省国有控股上市公司社会责任综合评价

国有控股上市公司作为特殊的公众公司,践行社会责任是其可持续发展的应有之义和必然诉求。本文从国有控股上市公司社会责任评价体系的构建出发,运用灰色关联分析法对2008年四川省国有控股上市公司社会责任履行情况进行了综合评价,旨在促进国有控股上市公司与资本市场的和谐稳定健康发展。     

CRIME AND POVERTY: A SEARCH‐THEORETIC APPROACH*

Numerous studies document that criminal activity is positively related to unemployment and negatively related to educational attainment levels within given communities. We study this phenomenon in the context of a search‐equilibrium model, in which agents choose between formal employment and pursuing crime‐related activities (theft). Prior to their “occupational choices,” agents undertake costly schooling, raising their productivity. Crime acts, in essence, as a tax on human capital by affecting the probability that a worker's earnings (possessions) are subsequently appropriated. There are multiple equilibria. High crime, low levels of educational attainment, long spells of unemployment, and poverty are correlated across them.     

血栓通治疗冠心病有效性和安全性的Meta分析

目的综合评价血栓通治疗冠心病的有效性和安全性,为临床治疗决策提供科学依据。方法利用计算机检索文献,并进行筛选,在对纳入文献进行方法学质量评价后,应用RevMan5.0软件,采用固定效应模型或随机效应模型对纳入文献进行Meta分析。结果本研究共纳入31篇文献,质量评级均为C级。在心电图总有效方面,血栓通单用VS复方丹参单用、血栓通联用其它药物VS复方丹参联用其它药物、血栓通联用硝酸甘油VS硝酸甘油、血栓通联用其它药物VS其它药物比较,RR及95%CI分别为1.45（1.29～1.62）、1.19（1.01～1.41）、1.22（1.10～1.34）、1.28（1.19～1.38）,差异具有统计学意义。在心绞痛总有效方面,血栓通联用其它药物VS其它药物、血栓通联用硝酸甘油VS硝酸甘油比较,RR及95%CI分别为1.28（1.19～1.38）、1.30（1.15～1.48）,差异具有统计学意义。敏感性分析验证了结果的稳定性。结论血栓通不论是单用还是与其它药物联合应用,在心绞痛和心电图总有效方面均较其它药物优秀。     

Actual averting expenditure versus stated willingness to pay

The purpose of this study is to perform a complete comparison of actual averting expenditure and stated willingness to pay measures, and to determine if the averting expenditure is a lower bound of the willingness to pay measured from contingent valuation experiment as suggested by literature. In addition to the single value comparison, Bootstrap, Krinsky and Robb, Jackknife, and Cameron are four simulation methods used to calculate confidence intervals for response function. Sample sizes of 100, 200, and 1000 are simulated 100 and 200 times respectively. A set of data with 540 households from a contingent policy referendum survey is employed for our purpose. Under a specific level of BOD improvement, a one-to-one single mean value comparison of the actual averting expenditure is greater than the mean willingness to pay from utility difference model. The empirical results are consistent with the theoretical expectation for expenditure difference that averting expenditure is a lower bound of willingness to pay generated from the contingent valuation method. A confidence interval, which contains the true mean willingness to pay at least 90% of the times, includes the actual averting expenditure as a lower bound of the mean willingness to pay as theory predicts.     

低碳城市建设背景下的苏南小城镇公共绿地与生态经济一体化设计——以常州市嘉泽镇镇区滨水公共绿地为例

公共绿地具有承载居民休闲活动和自然生态功能的双重属性,是低碳生态城市发展中压缩能耗和吸收温室气体排放的主要手段之一。小城镇绿地系统规划,融合生态网络功能、产业发展以及创造城镇特色等因素进行一体化规划设计,是一个值得探索的课题。首先,小城镇公共绿地需要深化与延伸上一层次生态网络的格局,充分体现镇区在低碳建设区域分工中的生态职能;其次,镇区公共绿地必须与该板块农业产业布局相融合,实现清洁生产,发展生态经济。在嘉泽镇区公共绿地实践中,从构建网络化的绿地系统格局入手,通过产业化的经营思想和低碳生态化的布局手法进行滨水绿地设计,配以本地花卉苗木与景观小品,最终形成特色化的滨水公共绿地景观。     

新就业大学生员工离职动因及其管理之浅见

如何降低新就业大学生员工的主动离职率,是那些接受大量大学生就业,处于高速发展阶段的高新技术企业迫切需要解决的问题。本文通过分析新就业大学生员工的群体特征,结合国内外离职动因理论,探讨了新就业大学生员工离职率居高不下的主要动因,并提出了有针对性的离职管理方略。     

iSDS: a self-configurable software-defined storage system for enterprise

ABSTRACT

Storage is one of the most important aspects of IT infrastructure for various enterprises. But, enterprises are interested in more than just data storage; they are interested in such things as more reliable data protection, higher performance and reduced resource consumption. Traditional enterprise-grade storage satisfies these requirements at high cost. It is because traditional enterprise-grade storage is usually designed and constructed by customised field-programmable gate array to achieve high-end functionality. However, in this ever-changing environment, enterprises request storage with more flexible deployment and at lower cost. Moreover, the rise of new application fields, such as social media, big data, video streaming service etc., makes operational tasks for administrators more complex. In this article, a new storage system called intelligent software-defined storage (iSDS), based on software-defined storage, is described. More specifically, this approach advocates using software to replace features provided by traditional customised chips. To alleviate the management burden, it also advocates applying machine learning to automatically configure storage to meet dynamic requirements of workloads running on storage. This article focuses on the analysis feature of iSDS cluster by detailing its architecture and design.     

传统山地建筑的生态价值评析——以滇南彝族土掌房为例

在当今全球低碳经济视野下,生态建筑已然成为建筑设计的一种必然趋势。而如何将传统建筑的生态价值合理的发掘、改进并创新,然后运用到现代建筑设计中,这更是值得我们去认真探讨的。通过对滇南彝族传统民居土掌房的生态价值分析和评价,总结出了土掌房的生态优势对现代山地建筑的借鉴意义,以此来为生态建筑设计提供设计思路。     

以园区为载体的产业集群空间转移：模式比较与案例分析

集聚效应和产业关联性促进了产业集群的空间转移,而集群发展与园区建设的耦合关系进一步推动了集群转移进程。基于产业集群升级与产业集群空间转移的耦合关系,从价值链的角度对集群空间转移的两种典型模式进行了比较,并结合苏通科技产业园和苏宿工业园两个案例对转移模式进行了案例分析。研究表明,产业集群空间转移是成熟集群转型升级的重要路径之一,政府应该积极依托园区建设,结合地区特点及资源优势,采取恰当的产业集群转移模式,实现集群转移带动下的产业转型升级与地区协同发展。