WebGIS支持的数字校园系统的设计与实现

目前我国正在向着数字化技术发展,并且数字化的校园已经成为了现代校园中非常重要的一部分.在建设数字化校园的时候,可以使用WebGIS技术来实现,促进数字化校园的实现进程.本文对WebGIS技术在辽宁大学数字化校园建设中的应用进行了分析,对其数字化校园进行了详细的设计,促进了辽宁大学数字化校园的实现.     

科学假说和艺术想象

科学和艺术是人类在社会发展过程中所创造的精神财富。表面上如此遥远的两大文化领域 ,却有着久远的亲缘关系 ,而且显示着共同的美感。这其中包括科学假说和艺术想象显示的空灵美。     

理想与现实：贵州普通高校教师队伍建设研究报告

西部大开发,发展民族地区的经济需要把沉重的劳动力负担转换为强大的人力资源优势,其关键在于发展高等教育,特别是高等教育教师队伍建设更是值得关注。提升高等教育竞争力,建设高素质的高校教师队伍,是当前高等教育需要思考的问题。透视贵州省普通高校教师队伍建设的现状及存在的问题,提出应对策略,为我省高等教育的进一步发展提供了具体的政策性建议。     

大力发展教育开发"第一资源"

当前，我国正处在全球经济快速发展的大环境下，面临知识经济、信息经济带给我们的新的机遇和挑战，开发我国蕴藏丰富的人力资源，提高劳动者的素质，培养跨世纪人才，已经成为我国增强国际竞争力的关键因素。     

转化思想在解数学题中的应用

通过精选一些实例进行分析和探讨，从七个方面说明转化思想在解数学题中的应用，为搞好解题教学提供帮助。     

兼语句与其他句式结构的区别－现代汉语特殊句式辨析之二

兼语句是现代汉语的一种特殊句式，对它的研究，早在王力的《中国现代语法》就已开始了，而且主要涉及到兼语句的结构特点及扩缩存废问题。本着重从兼语句的结构特征、语义特征与其他句式结构的比较中区别出这一句式的特征来。     

市场驱动--我国高等教育改革发展的鲜明特征

10多年的高等教育改革贯穿了一条清晰的主线 :以市场为导向 ,以市场为标准来发展和检验我国的高等教育。本文分析了促使高等教育面向市场的客观环境 ,探讨了市场经济基本原则在高教中的广泛运用和市场驱动的两层含义     

符号流中的模式发现

The idea of discovering patterns in data seems to be essential for decision making in our social activities. This paper presents a simple algorithm which can be used to detect such patterns in elementary sequences of symbols. It adopts a data compression algorithm to seek for interesting patterns, which is important in understanding the way that the input symbol stream repeats itself. In this paper, the algorithm and related data structures are described in detail, and an illustrative example is given.     

Chinese and Canadian Children's Evaluations of Lying and Truth Telling: Similarities and Dfferences in the Context of pro-and Antisocial Behaviors

The present study compared Chinese and Canadian children's moral evaluations of lie and truth telling in situations involving pro- and antisocial behaviors. Seven-, 9-, and 11-year-old Chinese and canadian children were presented 4 brief stories. Two stories involved a child who intentionally carried out a good deed, and the other2 stories involved a child who intentionally carried out a bad deed. When story characters were questioned by a teacher as to who had committed the deed, they either lied or told the truth. Children were asked to evaluate the story characters' deeds and their verbal statements. Overall, Chinese children rated truth telling less positively and lie telling more positively in prosocial settings than Canadian children, indicating that the emphasis on self-effacement and modesty in Chinese culture overrides Chinese children's evaluations of lying in some situations. Both Chinese and canadian children rated trugh telling positively and lie telling negatively in antisocial situations, reflecting the emphasis in both cultures on the distinction between misdeed and truth/lie telling. The findings of the present study suggest that, in the realm of lying and truth telling, a close relation between sociocultural practices and moral judgment exists. Specific social and cultural norms have an impact on children's developing moral judgments, which in turn, are modified by age and experience in a particular culture.     

Numerical investigation of cavitating flow behind the cone of a poppet valve in water hydraulic system

Computational Fluid Dynamics (CFD) simulations of cavitating flow through water hydraulic poppet valves were performed using advanced RNGk-epsilon turbulence model. The flow was turbulent, incompressible and unsteady, for Reynolds numbers greater than 43000. The working fluid was water, and the structure of the valve was simplified as a two dimensional axisymmetric geometrical model. Flow field visualization was numerically achieved. The effects of inlet velocity, outlet pressure, opening size as well as poppet angle on cavitation intensity in the poppet valve were numerically investigated. Experimental flow visualization was conducted to capture cavitation images near the orifice in the poppet valve with 30° poppet angle using high speed video camera. The binary cavitating flow field distribution obtained from digital processing of the original cavitation image showed a good agreement with the numerical result. Project supported by the National Natural Science Foundation of China (No. 59835160) and Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry of China (No. 50175097)