提升安徽博望产业集群竞争力的研究

安徽省博望产业集群尚处于集群发展的初级阶段,产业集群竞争力存在较多的弱势因素。为了有效进行产业集群治理,提升地区的产业集群竞争力,政府应加强平台建设,集群利益相关者应形成互动,同时应培育区域文化,增强产业集群的根植性。     

联合V2X通信和最小跳数距离的车辆定位方法

针对传统V2X定位方法定位成功率及定位精度较低的问题,提出了一种联合V2X通信和最小跳数距离的车辆定位方法。车辆利用最小跳数距离估算自身与通信范围外辅助节点间的相对距离,并利用路径相似度因子最高的辅助节点对该误差进行补偿,从而改善定位性能受通信距离约束的局限性。同时,综合考虑距离、辅助节点类型对定位性能的影响,利用加权最小二乘法对车辆位置坐标进行解算,提升定位的精度。仿真结果表明,所提定位方法与V2X定位方法相比,在定位成功率及定位精度方面分别提升38.6%和12.5%,具有一定的应用价值。     

Quality-Labeled Vegetable Consumption in Malaysia: Factors Affecting Attitude and Purchase Intent

The rising rate of foodborne diseases has caused not just consumers but also food producers to become increasingly concerned about food safety. As a result, the government of Malaysia, together with relevant bodies, have introduced quality-assurance agencies to certify food products that are produced, processed, and handled with methods that are acknowledged by the certification agencies as clean and safe for consumption. This study aims to identify the factors influencing consumer purchasing behavior toward quality-labeled vegetables. A survey was conducted using a self-administered questionnaire and distributed randomly to consumers in public places in the Klang Valley. Four hundred and sixteen respondents were approached. The results indicate that most of the respondents are aware of food quality labels. Using factor analysis, four latent factors that influence consumer attitude toward quality-labeled vegetables were identified, and the importance of quality attributes (sensory, health, safety, and social attributes) in shaping those attitudes was also shown.     

生态工业园区促进城市经济增长了吗?——基于双重差分法的经验证据

作为绿色发展理念在工业领域内的一种具体实践形式,生态工业园区是解决生态环境恶化和促进区域经济可持续发展的重要途径之一.生态工业园区强调绿色、低碳和循环的发展模式,在兼顾经济发展的基础上,更多强调对生态环境的保护,符合我国建设资源节约型和环境友好型社会的发展目标.利用全国范围内获批的生态工业园区这一准自然实验,运用全国283个城市经济社会统计数据,实证检验了生态工业园区对其所在城市经济增长的影响.实证研究发现:生态工业园区显著促进了所在城市的经济增长,在利用夜间灯光亮度以及改变实证策略等稳健性检验下该结论保持稳健.进一步研究表明,生态工业园区通过促进地区产业结构升级、加剧政府间竞争以及提高地区经济集聚水平等机制影响了城市经济发展.研究结论表明,生态工业园区对城市经济增长有显著的促进作用,绿水青山带来了金山银山.     

项目管理三要素与项目绩效的关系——以利益相关方满意度为中介变量

以利益相关方满意度为中介变量,探究了公共项目绩效评价中利益相关方满意度与项目管理三要素(质量、进度、成本)和公共项目绩效的内在关系。利用陕西省高速公路项目的具体数据,采用回归分析方法对利益相关方满意度在项目管理三要素与项目绩效之间的中介效应进行了实证检验。结果表明:利益相关方满意度在公共项目质量和进度与项目绩效之间具有显著的中介效应,而在项目成本与公共项目绩效之间的中介效应不明显。最后总结了研究结论的管理启示和研究不足。     

点融合技术在机场终端区的应用研究

空中交通流量的增加导致终端区空域的管制工作负荷增加、航空器冲突频发,原有的传统进近程序已不能适应民航业的快速发展.点融合系统(PMS)作为一种新型的进场程序,成为优化空域结构、减轻管制负荷和提升终端区运行效率的新技术.分析PMS的分类运行模式,对比国内外点融合系统内的关键参数,结合该技术在国内的应用案例,讨论PMS相比传统进近程序的应用优势,为点融合技术在国内的推广助力.     

商业银行谨慎经营行为及其对绩效的影响研究

本文首先利用投资效用函数从理论上分析商业银行谨慎经营对绩效的影响,然后进行了实证研究.理论模型表明,银行效率与风险资产比例存在一种倒U型关系;在考虑存款人效用或者加强临管后,银行会加大资本的投入比例、减少风险资产的投资比例,更为谨慎地经营.实证分析表明,我国商业银行经营日趋不谨慎,经营绩效有所下降;股份制银行比国有银行更加谨慎,绩效好于国有银行;从"在控制风险的前提下获取最大收益"的角度看,谨慎经营能提升银行绩效,实证结果与理论预测相吻合.调整传统业务结构,适当降低高资本消耗的贷款业务,优化资产组合配置,建立以风险调整的资本收益率(RAROc)为核心的绩效考核体系,是提高我国商业银行绩效的根本途径.     

葡萄糖酸钠的制备及发展趋势

概述了葡萄糖酸钠的基本特性和用途,综述了以葡萄糖为基本原料制备葡萄糖酸钠的4种合成方法——生物发酵法、均相化学氧化法、电解氧化法、多相催化氧化法。通过比较认为多相催化氧化法更适用于工业化生产。介绍了多相催化氧化法所使用的钯炭催化剂。     

Transforming Malaysia's Higher Education: Policies and Progress

Malaysia's higher education sector has a substantial number and diverse types of public and private providers, which have contributed toward improving access. Over time, with improved access, there are increasing policy efforts directed toward improving the quality of higher education to meet the desired human capital needed for advancing economic development. This paper assesses three key areas that have been undertaken to improve the quality of higher education, their measurements, achievements, outstanding challenges, and ensuing implications on future policy directions. The key performance indicators used for monitoring quality improvements show that some targets have been achieved. A review of the approach used to measure performance and a consolidation of the sector are needed for further quality improvement.