几组复合麻醉方法对犬麻醉效果比较

复方846、静松灵/氯胺酮、氯丙嗪/氯胺酮、氯丙嗪/乙醚、氯丙嗪/静松灵,均可使犬获得一定时间的麻醉效果。通过麻醉前、后体温(T℃)、呼吸(R),脉搏(P),镇痛反应,麻醉维持时间的检测;通过麻醉后手术安静顺利情况;从伤口愈合情况,以及术前、术后3天、7天白细胞、淋巴细胞、T淋巴细胞的变化表明:几组药物作用于犬后,体温间差异不显著(P>0.05),呼吸、脉搏部分呈显著性变化(P>0.05),各组术前、术后3天、7天的白细胞、淋巴细胞、T淋巴细胞变化组间差异不显著(P>0.05)。镇痛作用以复方846为好,其次为静松灵/氯胺酮、氯丙嗪/静松灵、氯丙嗪/氯胺酮、氯丙嗪/乙醚;麻醉维持时间复方846最长(133.70±9.66),其次为静松灵/氯胺酮(89±9.9);从手术安静顺利情况看,复方846、静松灵/氯胺酮优于其它组;从伤口愈合情况看,静松灵/氯胺酮优于其它组。综合比较:复方846、静松灵/氯胺酮用于大的临床麻醉,效果确实。     

抗战时期中国文学的雅俗互融－－兼论张恨水、张爱玲、赵树理

中国现代文学史的编写,多年来存在着一个致命的弱点,就是缺乏对通俗文学的重视.实际上,在抗战时期,处在不同政治地域内最有影响的代表作家张恨水、张爱玲、赵树理的创作均已表现出雅俗互融的风格.但由于他们的出身、生活经历和文化底蕴不同,因此表现出了各自不同的特点.     

论抗战时期国共合作的思想基础

抗战时期国共合作的思想理论基础是三民主义。没有三民主义思想理论的指导,就不可能有国共再次合作;没有国共合作,也就不可能有抗日战争的最后胜利。     

“日本桥”与中国现代文艺思潮观

日本的文学思潮观形成于对欧洲文学思潮的译介,厨川白村最早进行欧洲文学思潮史的系统研究并明确阐述了自己的文学思潮观,成了后来日、中研究者仿效的主要范例。受厨川白村影响,在日本留学的鲁迅写了《摩罗诗力说》一文,是中国人研究欧洲文学思潮的开端。五四运动前后,康有为、陈独秀、徐悲鸿以及文学研究会均受到日本影响。中国的艺术思潮研究走了一条与日本近似而且联系紧密的道路,西方艺术思潮对中国的影响依赖于“日本桥”的中介。     

孙中山与头山满交往述略

孙中山在从事中国民主革命过程中,曾积极争取日本朝野人士的合作与支持。他与日本浪人首领头山满,有长达28年的交往,保持终生的友谊。文章根据中日相关史料,对孙中山与头山满的交往史事,进行了梳理,并对这类交往在孙中山与日本关系中起何种作用等问题,予以探讨。     

An access network design problem with end-to-end QoS constraints

In this paper, we present an access network design problem with end-to-end quality of service (QoS) requirement. The problem can be conceptualized as a two-level hierarchical location-allocation problem on the tree topology with nonlinear side constraints. The objective function of the nonlinear mixed integer programming model minimizes the total cost of switch and fiber cable, while satisfying demand within the prescribed level of QoS. By exploiting the inherent structure of the nonlinear QoS constraints, we develop linearization techniques for finding an optimal solution. Also, we devise an effective exact optimal algorithm within the context of disjunctive constraint generation. We present promising computational results that demonstrate the effectiveness of the proposed solution procedure.     

Mixed integer (0–1) fractional programming for decision support in paper production industry

This paper presents an effective and efficient method for solving a special class of mixed integer fractional programming (FP) problems. We take a classical reformulation approach for continuous FP as a starting point and extend it for solving a more general class of mixed integer (0–1) fractional programming problems.To stress the practical relevance of the research we focus on a real-life application in paper production industry. The constantly advancing physical knowledge of large scale pulp and paper production did have a substantial impact on an existing DSS in which mixed integer (0–1) fractional programming is introduced. We show that the motivation to solve a real-life fractional programming problem can provide the basis for a new approach in a new context that has an added value of its own, even outside the given application area. We describe the main characteristics of the DSS, the necessity to develop a non-iterative solution procedure and demonstrate both the effectiveness and efficiency of the proposed approach from practical data sets.     

Staff rostering in call centers providing employee transportation

We address the staff rostering problem in call centers with the goal of balancing operational cost, agent satisfaction and customer service objectives. In metropolitan cities such as Istanbul and Mumbai, call centers provide the transportation of their staff so that shuttle costs constitute a significant part of the operational costs. We develop a mixed integer programming model that incorporates the shuttle requirements at the beginning and end of the shifts into the agent-shift assignment decisions, while considering the skill sets of the agents, and other constraints due to workforce regulations and agent preferences. We analyze model solutions for a banking call center under various management priorities to understand the interactions among the conflicting objectives. We show that considering transportation costs as well as agent preferences in agent-shift assignments provides significant benefits in terms of both cost savings and employee satisfaction.     

A latent variable model for analyzing mixed longitudinal (k,l)-inflated count and ordinal responses

A random effects model for analyzing mixed longitudinal count and ordinal data is presented where the count response is inflated in two points (k and l) and an (k,l)-Inflated Power series distribution is used as its distribution. A full likelihood-based approach is used to obtain maximum likelihood estimates of parameters of the model. For data with non-ignorable missing values models with probit model for missing mechanism are used.The dependence between longitudinal sequences of responses and inflation parameters are investigated using a random effects approach. Also, to investigate the correlation between mixed ordinal and count responses of each individuals at each time, a shared random effect is used. In order to assess the performance of the model, a simulation study is performed for a case that the count response has (k,l)-Inflated Binomial distribution. Performance comparisons of count-ordinal random effect model, Zero-Inflated ordinal random effects model and (k,l)-Inflated ordinal random effects model are also given. The model is applied to a real social data set from the first two waves of the national longitudinal study of adolescent to adult health (Add Health study). In this data set, the joint responses are the number of days in a month that each individual smoked as the count response and the general health condition of each individual as the ordinal response. For the count response there is incidence of excess values of 0 and 30.     

《诗经》灾异诗述论

中国是一个多灾国家,灾异对包括中国文学在内的整个社会文化一直都产生着深远的影响。《诗经》中不乏对自然灾异的描写,这些记载可以说是对灾异的形象而生动的再现。检索发现,《诗经》中涉及自然灾害的诗歌达到36首,占305篇总量的十分之一强。这些灾异诗歌,无论是思想内容还是文学性较上古灾异诗有了很大的提升。