工程造价咨询在项目全过程管理中的运用研究

项目的造价成本高低直接影响着各参与方的盈利水平,为了实现更为有效的造价控制,施工单位多采用全过程管理理念与方法对项目造价进行紧密地把控.但随着建设规模的不断扩大和新型技术的出现,仅靠施工单位很难满足建设项目的各项需求,所以选择专业的造价咨询企业是非常必要的.本文介绍了全过程造价咨询内容及其应用,探讨了造价咨询企业在成本控制方面的重要作用.本文为全过程造价咨询的相关研究提供一定的参考价值.     

锚企业与科技新城共生模式研究:以阿里巴巴和杭州未来科技城为例

以阿里巴巴和杭州未来科技城为例，采用Logistic模型探讨锚企业与科技新城共生模式，结果表明：总体而言，阿里巴巴和未来科技城属于互利共生模式，阿里巴巴成长会促进未来科技城发展，而未来科技城发展也会反哺阿里巴巴的成长。2013-2016年两者共生系数之间的差值不断缩小，表明阿里巴巴和杭州未来科技城的共生模式从偏利共生转向互利共生。     

Partisan and bipartisan gerrymandering

This paper analyzes the optimal partisan and bipartisan gerrymandering policies in a model with electoral competitions in policy positions and transfer promises. Party leaders have both office‐ and policy‐motivations. With complete freedom in redistricting, partisan gerrymandering policy generates the most one‐sidedly biased district profile, while bipartisan gerrymandering generates the most polarized district profile. In contrast, with limited freedom in gerrymandering, both partisan and bipartisan gerrymandering tend to prescribe the same policy.     

晋升激励、专业搭配与公共卫生服务满意度

提供高质量的公共卫生服务不但是现代政府的重要职责，也是国家治理能力的重要体现。随着中国经济发展进入新常态，干部考核评价机制不断完善，地方政府官员开始重视公共卫生等民生服务，同时，官员间专业搭配也成为影响民生服务质量的重要因素。文章将2013年中国综合社会调查数据与81个地级以上城市官员的相关信息进行匹配，将上任时年龄小于55岁的官员定义为"强晋升激励"官员，而将上任时年龄大于等于55岁的官员定义为"弱晋升激励"官员。研究发现：第一，具有"强晋升激励"的市委书记和市长都有助于改善城市公共卫生服务满意度。第二，在经济较发达、政府财力较雄厚和东部地区城市，官员晋升激励的积极效应更为明显。第三，在本研究样本中，市委书记和市长"经管—理工"的专业搭配模式是提高城市公共卫生服务满意度的积极因素。在考虑了测量偏误、地区异质性、遗漏变量、样本代表性问题，并经过安慰剂检验后，文章的主要结论依然保持稳健。本研究不但有助于我们更深入地理解中国城市间公共卫生服务质量的差距及其决定因素，而且也启发我们从改善官员治理的角度来提高公共卫生服务质量，以及应对突发性公共卫生事件的能力，从而有效推进中国经济健康可持续发展。     

A genetic algorithm based approach to transactional and QoS-aware service selection

As there are various risks of failure when Web services are deployed in unreliable environment, the execution of a composite Web service (CWS) requires the transaction mechanism to guarantee its reliable execution. However, the existing service selection approaches consider QoS and transaction separately and have not considered that transactional properties may affect the QoS such as the execution time of a CWS. This work addresses the importance of considering transactional properties and how the transactional properties affect the QoS simultaneously in the process of service selection by a QoS-aware and transactional-aware selection approach. First, a performance evaluation method is proposed to calculate the execution time of a transactional CWS. Then, a genetic algorithm based approach, which takes into account the execution time, price, transactional property and successful execution rate of CWS, is presented to achieve global optimisation service selection. Finally, experimental results show the efficiency and effectiveness of the approach.     

中国新能源上市公司成长性评价研究

发展新能源产业是我国实现能源结构转型和发展低碳经济的重要途径，研究新能源行业上市公司的成长性有助于了解新能源产业的发展态势。本文分析了影响中国新能源上市公司成长性的关键因素，并构建成长性评价指标体系，收集36家新能源上市公司2011～2015年的面板数据，采用因子分析对我国新能源上市公司的成长性进行综合评价，并对不同类型的新能源上市公司成长性进行对比分析。研究表明，我国新能源上市公司整体成长性偏低，多数企业追逐短期盈利，各分项能力发展不均衡；不同类型的新能源上市公司成长性和各分项能力存在较大差异。     

Subnational institutional environment,scale competition and MNEs’ ownership levels in transition economy: evidence from China

Abstract

This paper shows that the effect of market scale competition on the ownership levels of foreign-funded enterprises is conditioned on sub-national institutional environment in China. Analysis is based on the idea that multinational enterprises subject to the dual pressures of institutional isomorphism and competition in the host country. The provincial panel data from 2001 to 2012 is used for empirical tests. This study indicates that the weaker the legal property rights protection and legal enforcement of contracts, and the higher the opening up, the more the large foreign-funded enterprises decrease their ownership levels, whereas the negative moderating effect incurred by the reduction to government intervention in business is limited significant.     

优选富铁锌酵母活性干粉的制备

以酿酒酵母为目标菌株,采用梯度驯化的方式对酵母菌进行培养及铁、锌离子的测定,筛选出富集铁、锌的酵母菌株,优化富铁锌酵母干粉的制备条件和复水活化条件,为富铁锌酵母干粉食品化提供理论依据。