水利工程建设市场主体信用信息综合管理与动态评价建设探讨

水利建设市场主体信用评价工作开展以来,对水利建设市场的诚信体系建设起到了积极的作用,但也存在一些有待完善的细节。该文分析了信用信息评价与应用管理存在的问题,提出了建设思路、内容和系统的总体设计方案,为完善水利工程建设市场主体信用信息评价与应用管理,建设守信激励和失信惩戒体制服务。     

基于集对分析的区域水资源承载力评价研究

在分析水资源承载力构成要素的基础上,遵循科学性、层次性、可操作性和目标导向性原则,构建了水资源承载力评价指标体系,并将组合赋权法和集对分析法相结合,对三江平原及各分区水资源承载力进行评价。结果表明:研究区整体水资源承载力处于"中等"水平;7个县市中,七台河市与穆棱市水资源承载力为Ⅱ级,处于"较好"水平,鸡西市、鹤岗市、双鸭山市、佳木斯市与依兰县处于"中等"水平。     

乳制品行业用水特性与节水措施分析

近年来我国乳制品行业迅速发展,乳品企业在为提高人民生活水平做出积极贡献的同时,也带来了高耗水量、高排水等用水问题。基于蒙牛等乳制品企业水平衡测试成果,通过深入调查乳制品企业用水工艺流程,研究了乳制品企业CIP冲洗、蒸汽杀菌、冷却等用水环节的用水规律和特点,剖析了企业用水量和排水量双高与生产工艺内在要求之间的必然联系。最后,根据研究结果给出了乳制品行业充分合理利用水资源的措施建议。     

云南中北部地区1954-2012年干旱评价研究

利用云南中北部地区6个气象站点1954-2012年资料,选用标准化指数计算各站点干旱指数,统计分析了云南中北部地区1954-2012年发生干旱的年份及发生不同干旱的频次。研究结果表明:1临沧站出现干旱的年份较多,但蒙自站出现极端干旱的年份明显高于其他5站;2各站点在不同季节出现干旱的频次不同,其中腾冲在春季相比于其他5站,发生干旱的频率较高35.6%,临沧站在夏季和冬季发生干旱频率均较大,分别为35.6%和37.9%,蒙自站在秋季发生干旱频率最大,为34.8%。研究成果可为云南中北部地区的干旱评价分析和水资源保护提供一定的参考价值。     

建设工程招投标评标办法简析

工程招投标活动是建设工程程序中的重要环节,2000年《中华人民共和招标投标法》的颁布实施,为规范建筑市场和招标投标活动提供了法律依据。在招投标的过程中,如何选择实力强、信誉好的投标单位,都需要通过评标来实现;因此,制定契合项目实际情况、合理的评标办法是招投标环节中的关键之一。     

河南省水生态文明建设试点城市生态系统健康评价

在总结城市生态系统的属性并分析其健康内涵的基础上, 通过频度统计法, 建立评价指标体系。采用海明贴 近度, 建立模糊物元模型, 对河南省第一批水生态文明城市建设试点郑州、 洛阳、 许昌 2000 年- 2013 年间城市生态 系统的健康水平进行评价, 分析影响城市生态系统健康发展的各要素, 结果表明: 郑州、 洛阳和许昌整体的城市生态 系统健康水平呈上升趋势, 但健康改善程度并不显著, 且部分指标有恶化趋势; 相同时期内, 城市生态系统的健康水 平排序由高到低依次为郑州、 洛阳、 许昌, 但其增长速率则为许昌最快、 郑州最慢; 各城市不同要素之间的健康程度 差别较大, 且不同城市各要素之间的协调性较低。因此, 未来应针对健康程度较差的要素重点发展, 提高各要素之 间的协调性, 进一步提高城市生态系统整体的健康水平。     

How individual characteristics influence people's evaluation towards information technology in different contexts

Prior research on technology acceptance has primarily focused on understanding why individuals accept a particular technology, while very little is known about how individuals evaluate various types of technology, especially when they have different levels of experiences. In this research, we try to understand how individual characteristics influence their evaluation towards different types of technology. To test the research model empirically, a laboratory experiment was conducted, and the resulting data was used to test both measurement and structural models. Based on the statistic results, we found that people's need for cognition and originality cognitive style had different effects on technology evaluation in various contexts. This study sheds light on the rarely studied evaluation aspect of the technology acceptance. The main contribution of this study is that people employ different mechanisms to evaluate technology in different contexts, and individual characteristics play an important role in influencing technology evaluation.     

User satisfaction evaluation of microblogging services in China: using the tetra-class model

This study is aimed at revealing the contributions of microblogging services to user satisfaction in China. An empirical investigation was conducted to analyse user experience on the 36 main microblogging service elements, using a sample of 216 users of Sina Weibo, which is the biggest microblog in China. The tetra-class model was then applied to identify the contribution of each service element to the overall satisfaction. Through correspondence analysis, we calculated, respectively, the contribution to dissatisfaction when the service element was negatively evaluated and that to satisfaction when it was positively evaluated. Based on these two contribution values, we classified the service elements into four categories: Basic, Secondary, Plus, and Key. In order to know the preferences of different users towards the microblogging service elements, we segmented the users into groups according to their microblogging characteristics and personal attributes and then discussed the variations of the service, categorising among different user groups. Finally, we analysed the results and reached some conclusions, which could be helpful for the improvement of customised microblogging services.     

五元系数法-改进熵权法在水质评价中的应用

为了使水质监测值和水体划类标准值之间关系更紧密,利用五元联系数方法建立了各水质评价指标与评价标准的五元联系数;同时在传统熵权计算的基础上,采用秩比法设定偏好校正系数,得到改进的熵权重;最后将五元联系数ui和改进的熵权重WRi相结合获得五元综合联系度,据此对水质进行评价,这是一种主客观结合的、符合实际情况的水质评价新方法。以贵州贵阳市河流断面监测数据为例,评定样本点所在河段水质等级,分析了该河流水质变化趋势,验证了五元系数法-改进熵权法水质评价方法的实用性。     

Beyond multi-adjoint logic programming

In ‘multi-adjoint logic programming’, MALP in brief, each fuzzy logic program is associated with its own ‘multi-adjoint lattice’ for modelling truth degrees beyond the simpler case of true and false, where a large set of fuzzy connectives can be defined. On this wide repertoire, it is crucial to connect each implication symbol with a proper conjunction thus conforming constructs of the form (←_i, &_i) called ‘adjoint pairs’, whose use directly affects both declarative and operational semantics of the MALP framework. In this work, we firstly show how the strong dependence of adjoint pairs can be largely weakened for an interesting ‘sub-class’ of MALP programs. Then, we reason in a similar way till conceiving a ‘super-class’ of fuzzy logic programs beyond MALP, which definitively drops out the need for using adjoint pairs, since the new semantics behaviour relies on much more relaxed lattices than multi-adjoint ones.