沥青混凝土路面病害防治的施工管理措施

对于沥青混凝土地面而言,裂缝、水破坏、松散、泛油、推移等都是其最常见的病害现象,可以说是公路施工过程中质量方面的通病,不但影响了车辆通行的速度及安全,也对我们所有施工技术人员提出了严峻的考验和挑战,本文系统的介绍了沥青混凝土路面病害的形成原因和在施工管理过程中的如何采取相应的有效措施,希望可以供所有同仁参考。     

确保砼外观质量的施工技术措施

随着桥梁工程建设越来越注重砼外观质量,特别是城市及旅游景点的桥梁工程,出露的结构物往往要求一次浇筑成型,面层平整光滑、色泽均匀,棱角顺直、无碰损和污染,不需做任何外装饰,直接采用现浇砼的自然色作为饰面。文章通过模板、砼配合比、砼浇筑及振捣等方面详细阐述了确保砼外观质量的技术措施。     

绝对值编码器在气烧窑单半提升机中的应用

针对气烧窑单斗提升机运行中存在的问题,使用绝对值编码器进行保护.介绍绝对值编码器选型、安装及调试过程,以及在控制系统硬件和软件的组态方法.     

论750kV主变绝缘油中颗粒度指标的保证

文章以试验数据为基础,介绍了绝缘油中颗粒度对超高压电气设备绝缘强度的影响,阐述了拉西瓦水电站750 kV变压器油的处理工艺。     

Comparing Firm Failure Predictions Between Logit,KMV, and ZPP Models: Evidence from Taiwan’s Electronics Industry

This paper applies the Taiwan electronics industry data to detect the discriminatory powers of Logit, KMV, and zero-price probability (ZPP) models that represent respectively the regressive fitting model, the option-based pricing model, and the GARCH time series simulation model. In our circumstances, according to cumulative accuracy profile, receiver operating characteristic, and even Brier score, the KMV performs the worst. The disadvantages for KMV are that the equity market exists some nonlinear characteristics, the unknown market value of asset affected by the change of capital structure is not exogenous, and the failure point is difficult to be estimated correctly. Besides, KMV is however too simple to model the fluctuation of the equity value as the GARCH does. On the other hand, the Logit performs above average. To preclude over-fitting and keep model parsimonious, two significant factors are extracted from as many as forty financial variables for the logistic regression on binary failure data. The result of Logit training has perfect discrimination. However, for the post-sample data, the fitting to categorical but not ordinal data makes Logit have the divergent failure predicted probabilities and highest Briser Score. In practical, ZPP GARCHNorm uses just equity value to predict firm failure but it performs remarkably well supposing that downward price trend or volatility persistence in stock price changes is appropriately caught. It implies that the distorted signals such as overreaction of traders and insider trading would definitely impair the ZPP GARCHNorm. Nevertheless, the larger type I error than type II error in all models indicates that the prediction of non-failed firms should be more examined further than that of failed firms.     

An agile approach for supply chain modeling

This paper proposes the generic label correcting (GLC) algorithm incorporated with the decision rules to solve supply chain modeling problems. The rough set theory is applied to reduce the complexity of data space and to induct decision rules. This proposed approach is agile because by combining various operators and comparators, different types of paths in the reduced networks can be solved with one algorithm. Furthermore, the four cases of the supply chain modeling are illustrated.     

产业集群视角下的区域品牌

产业集群的迅速发展对我国经济起了积极的促进作用,但产业集群的根本发展又依赖于区域品牌的建设。区域品牌往往代表着一个地方产业产品的主体和形象,对本地经济的发展起着举足轻重的作用。但是当前在区域品牌的建设中存在种种的问题与缺陷,使得我国区域品牌建设路程缓慢,加强区域品牌建设,发展区域品牌,用区域品牌来带动区域产业经济的发展,可以使我国产业走上快速发展的道路。因此本文围绕产业集群的发展现状,及产业集群与区域品牌的内在联系,分析区域品牌的内涵及特点的基础上提出创建区域品牌的重要性,并对区域品牌的建设展开初步的探讨。     

基于自主创新的国家创新体系的内涵和构建

在国家创新体系研究的基础上,根据自主创新的特点和要求,界定企业、高等院校、科研机构、社会中介组织和政府作为自主创新主体的内涵,构建以提高自主创新能力为核心的国家自主创新体系。     

基于聚类分析的国有银行与股份制银行比较

本文首先在企业竞争力理论基础上设计了银行竞争力评价的指标体系,然后采用聚类分析方法,对2001～2004年重庆银行业12家样本银行按照资源、能力和综合竞争力3个方面分别进行自动分类,最后提出了国有银行股份制改革后关键在于深层次推进制度建设等观点。     

公共经济学视角下的会展经济现象分析

当前,会展经济现象引起了越来越多的人关注,但人们对它还存在一些模糊认识。会展经济不等同于会展业,它是一种经济现象和经济行为。从公共经济学视角看,与会展经济相关的设施和服务属混合产品。应科学界定会展经济参与主体特别是政府的职能范围,引导会展经济健康有序发展。