简述曹魏迁都许昌的原因及对许昌的治理

通过黄巾起义发家的曹操,在不断地战争中有了统一天下的愿望。由于曹操的谋略、品行和军事才能,在其周围聚集了一批文臣武将,在他们的协助下,曹操的队伍不断地发展壮大,形成了独立的政权。建安元年,曹操建都许昌,以许昌为基点展开了统一天下的一系列军事征伐。曹魏政权对许昌也进行了一定的开发,一方面促进了许昌经济的发展,另一方面也为曹魏统一北方奠定了基础。     

Behavioral Intention to Adopt Digital Library by the Undergraduates

The purpose of this research is to investigate the factors that affect undergraduates' behavioral intention to use digital library among the private universities in Malaysia. The target respondents are undergraduates from Malaysian private universities. Questionnaires were distributed among 500 undergraduates through either online or face-to-face method. Reliability test, normality test, Pearson Correlation Coefficient analysis, and Multiple Linear Regression (MLR) were carried out for data analysis. Performance expectancy, social influence, facilitating conditions, hedonic motivation, habit, and information quality had a positive and significant association with behavioral intention to adopt a digital library except for effort expectancy. This research successfully reinforced that the inspiration to ameliorate Unified Theory of Acceptance and Use of Technology 2 (UTAUT 2) by synthesis of Information Systems Success Model (ISSM). This proposed framework with a combination of ISSM and UTAUT 2 has enhanced the fitness of UTAUT 2. Universities that have yet to implement digital library can comprehend undergraduates' needs better by considering all the significant factors to develop a digital library. The universities with the digital library may also notice the important features of the existing digital library that should be maintained and upgraded constantly so that they can fulfil undergraduates' requirements.     

网络时代大学生“孤独感”的产生原因及疏导方法探析

互联网作为当代获取信息的基本手段之一,不仅仅作为通信工具而存在,更重要的是时刻影响着当代大学生的行为处事方式、世界观、人生观、价值观乃至日常生活。然而互联网也是一把“双刃剑”,在给大学生们的生活带来便捷的同时,也占据了大学生的大量时间,在虚拟的世界当中思想处于悬空状态,心无安处,强烈的“孤独感”油然而生。如何利用好网络的优势,完善当代大学生的网络生活,同时减轻他们的“孤独感”,使其身心健康发展是我们亟待解决的问题。     

郑州市普通高校羽毛球运动开展现状及对策分析

论文结合当前郑州市高校的实际情况,采用调查、数理统计、逻辑分析等科研方法对郑州市部分高校羽毛球开展现状进行了调研,对高校羽毛球课程开设进行探讨。     

鄱阳湖生态经济区生态体系可持续发展评价研究

本文以鄱阳湖生态经济区中的6个城市作为研究对象,选取综合指标层、评价指标层、考核指标层三个层次构件鄱阳湖生态经济区可持续发展指标体系,并查阅相关的统计资料获取相应的指标值,用统计软件SPSS进行数据处理与分析,借助粗糙集中的知识分类思想和指标约简原理提取关键指标,并对其进行重要度的计算来确定权重,从而对鄱阳湖生态经济区可持续发展进行实证评价。     

基于用户视角的数字档案馆评价研究

本文从数字档案馆网络用户视角出发,以问卷调查数据为基础,客观分析了用户参与数字档案馆评价的几个维度,进一步分析及确认影响数字档案馆品质的馆藏、技术、服务、管理四个因素十个指标,通过对数字档案馆用户评价体系的构建,进一步指导数字档案馆的规划与建设工作。     

海洋保护研究的文献及专利计量分析

本文基于ESI和DII数据库,使用文献及专利方法和指标,从整体趋势、国家(地区)层面、机构层面、主题层面对海洋保护领域2003-2012年间的文献和专利进行计量分析.研究发现,美国是该领域科技创新的核心国家,中国正逐渐成为该领域科技创新的中心国家,加强与主要国家尤其是美国的合作,加大对重点领域的科技投入,是快速提高我国在该领域科技水平的有效途径.     

基于WOS和DⅡ数据库的科技资源监测分析——以二氧化碳排放统计监测领域为例

本文基于WOS和DⅡ数据库,使用科学计量学方法和指标,以二氧化碳排放统计监测领域为例,从整体趋势、国家层面、机构层面、主题层面对该领域2003-2012年间的论文和专利等科技资源进行监测分析。结果显示,美国是该领域科技创新的惟一核心国家,中国正逐渐成为该领域科技创新的重要参与者,加强与主要国家尤其是美国的合作,是快速提高我国在该领域科技水平的有效途径。     

基于引文分析的3D打印技术研究主题发展趋势

利用汤森路透公司的Web of Science数据库,以1994-2014年出版文献中关于3D打印技术的8000多篇文献为数据源,借助Histcite和Pajek软件分析3D打印技术引文编年图和研究主路径,判断3D打印技术的研究主题发展趋势。研究结果对于把握当前研究重点和预测未来研究方向提供了依据。     

The construction of an interfacial valve-based microfluidic chip for thermotaxis evaluation of human sperm

Thermotaxis has been demonstrated to be an important criterion for sperm evaluation, yet clinical assessment of thermotaxis capacity is currently lacking. In this article, the on-chip thermotaxis evaluation of human sperm is presented for the first time using an interfacial valve-facilitated microfluidic device. The temperature gradient was established and accurately controlled by an external temperature gradient control system. The temperature gradient responsive sperm population was enriched into one of the branch channels with higher temperature setting and the non-responsive ones were evenly distributed into the two branch channels. We employed air-liquid interfacial valves to ensure stable isolation of the two branches, facilitating convenient manipulation of the entrapped sperm. With this device, thermotactic responses were observed in 5.7%-10.6% of the motile sperm moving through four temperature ranges (34.0-35.3 °C, 35.0-36.3 °C, 36.0-37.3 °C, and 37.0-38.3 °C, respectively). In conclusion, we have developed a new method for high throughput clinical evaluation of sperm thermotaxis and this method may allow other researchers to derive better IVF procedure.