清代中期新疆北部城市崛起的动力机制探析

本文认为清代中期新疆北部城市崛起的动力机制,一是体现在国家行政力量的推动,二是北疆商业市场机制的形成对北部城市地位的确立和巩固意义重大,改变了历史时期“南重北轻”的新疆城市分布格局。     

一个数据流查询系统的设计与实现

就目前大多数数据流查询处理过程中可能出现的一些问题，根据数据流处理的特点和要求，提出了新的查询处理结构，实现了数据共享及多流多查询环境下查询的处理．     

三钢客户管理策略的实践与探索

客户是企业的重要资源,必须进行科学有效的管理.结合三钢实践,从客户数据库管理、处理客户的投诉、培育重点客户、忠诚客户、改进与客户的关系等方面入手,探讨分析了钢铁企业客户管理的具体策略.     

块Jacobi迭代阵的收敛性

研究大型线性方程组迭代解法中分块ＪＡＣＯＢＩ迭代阵的收敛性。采用块矩阵分析方法和谱半径降维估计法得到块Ｊａｃｏｂｉ迭代阵收敛的实用充分条件。     

仔猪水肿病菌苗制备及免疫效力的测定

用致仔猪水肿病的溶血性大肠杆菌制备氢氧化铝苗、蜂胶苗、油佐剂苗和超声波灭活苗,分别以0.1mL、0.2mL剂量免疫小白鼠,在免疫后24d用强毒株培养液攻击,结果显示:0.1mL氢氧化铝苗、0.2mL 蜂胶苗可使小白鼠获得100％的保护。0.1mL超声波灭活苗可使小白鼠获得80％的保护。用不同菌液免疫家兔,在免疫后21d、27d采血测其凝集抗体效价,21d、27d皆以油佐剂苗效价最高,达1:32、1:64,其次为蜂胶苗,为1:32(++)、1:32(++++)。     

On estimating census undercount in small areas

"Net undercount rates in the U.S. decennial census have been steadily declining over the last several censuses. Differential undercounts among race groups and geographic areas, however, appear to persist. In the following, we examine and compare several methodologies for providing small area estimates of census coverage by constructing artificial populations. Measures of performance are also introduced to assess the various small area estimates. Synthetic estimation in combination with regression modelling provide the best results over the methods considered. Sampling error effects are also simulated. The results form the basis for determining coverage evaluation survey small area estimates of the 1900 decennial census."     

The new treatment mode research of hepatitis B based on ant colony algorithm

Hepatitis B (HB) is a deadly disease that has a severe impact on infected individuals. In China, not only are the incidence and infection rates of HB very high, but also many HB patients suffer from mental illness associated with anxiety and fear because of HB-associated symptoms. This exacerbates the patients’ condition, potentially increasing the risk of mortality. In this paper, we propose a new treatment mode to improve the therapeutic efficiency and patients’ satisfaction with their healthcare. In a single process of this new treatment, several patients with similar disease symptoms are treated by one doctor at the same time. This new treatment mode can not only relieve the anxiety and fear of HB patients, and improve patients’ cognition rate of HB, but also reduce the HB infection rate, slow down the progression of disease symptoms, and shorten the course. If patients with similar disease symptoms are to be grouped together, there is a need to determine the optimal patient batch combination, which can be solved in the new mode, called patient combined problem (PCP). We also constructed a mathematical model of PCP, and present the ant colony (AC) algorithm and Enhanced AC with a P-3-exchange operator for PCP in the new treatment mode in this paper. We also performed an experiment that showed that our proposed algorithms are very fast and effective for solving this problem.

     

比较视野下东西方社会主义观:体系、起源与生成路径

在20世纪的世界社会主义史上,东西方对社会主义的认识形成了两种典型的解释体系——苏联社会主义和民主社会主义,二者在基本内涵、总体原则、政策主张三个层面形成了两种阐释模式。这两种社会主义观的形成,与社会主义思想的起源和双重意蕴紧密相连：“乌托邦主义”分化出的社会主义和共产主义两大流派表现出同质和异质的二重性,这使它们融合孕育出的科学社会主义天然地具有双重基因。世界社会主义的多样化生成路径,是在社会主义双重基因的基础上,经济发展、政治结构、阶级关系和思想观念四重维度在不同时空综合作用的结果。沿着这一路径,中国在探索社会主义发展道路的过程中形成了新时代中国特色社会主义,它将引领21世纪世界社会主义的新航向。     

双元学习关系、平衡及绩效研究综述

双元学习作为企业获取和创新知识的一种有效方式,是提升企业竞争能力、促进企业可持续发展的关键。通过回顾国内外学者对双元学习的研究,从双元学习的内涵与关系、双元学习平衡的实现方式及其影响因素、双元学习的绩效效果四个方面进行了综述,认为现有研究在研究的层次、维度、视角和方法等方面有待进一步拓展和深入。未来应开展多层次与跨层次的双元学习研究,加强不同理论视角的结合,整合各领域相关研究成果,进一步揭示双元学习内涵与关系的独特性;重视从动态研究视角,深挖影响双元学习平衡的不同层面各因素间的相互关系及其作用机制,提高对情境因素的重视程度,进一步探讨双元学习平衡的实现路径;拓展组织绩效维度,开展双元学习影响组织绩效的权变因素研究,剖析不同条件下双元学习对不同绩效影响的差异。