我国现阶段毒品犯罪原因分析     

李秋先  王树全 《唐山学院学报》2003,16(1):43-45

提出改革开放之初防毒机制的弱化 ,部分地区经济极度贫困 ,现实庞大“消费市场”的刺激是我国毒品犯罪发展蔓延的主要国内因素 ,国际毒品犯罪的日趋猖獗及毒品犯罪分子对巨额利润的贪婪追求也是我国现阶段的毒品犯罪发展的重要原因  相似文献   

试论南北朝小诗     

周曙光 《新乡师范高等专科学校学报》2001,15(4):43-46

南北朝文人创作的五、七言四句小诗渊源流长 ,作家众多 ,内容广泛 ,表现手法多样 ,取得了较高的艺术成就。本文着重探讨了小诗的形成、发展以及小诗的创作队伍、题材内容和艺术特色等。南北朝小诗的不断完善、成熟 ,为唐绝句做了必要的准备  相似文献   

工程电流源综述     

李舒晨 《渭南师范学院学报》2001,16(2):3-7

在信号变换及电子测量中，电流源应用广泛，其性能优劣及结构特点对测量结果有直接影响。因此，在电子测量控制工程设计中应正确选用电流源电路结构及参数。  相似文献   

市场驱动--我国高等教育改革发展的鲜明特征   总被引：1，自引：0，他引：1  

付勇  高阳 《高教探索》2003,(4):20-22

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  相似文献   

大学教师文化的基本特征及教育学意义     

傅定涛 《当代教育论坛》2006,(21):67-68

一、大学教师文化的基本特征1.专业性。大学教师文化的专业性来源于大学教师所从事的工作内容和教师职业本身的专业性。大学教师总是归属于某一学科专业,一生中大部分时间是在某一学科专业领域里从事研究和教学工作,在工作内容上表现出很强的专业性。这是大学教师文化有别于中小学教师文化的重要方面。教师与学生及其他社会成员之间的文化交流更多地是以自己所从事的学科专业为纽带的,这在一定程度上使得大学教师在文化交流上具有某种局限性和自我封闭性。其中既有客观条件的制约,也有主观上的因素,他们往往不愿意或不屑于和别的学科专业的…  相似文献   

符号流中的模式发现     

李刚  童頫 《上海大学学报(英文版)》2001,4(Z1)

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.  相似文献   

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

Kang Lee  Catherine Ann Cameron  Fen Xu  Genyao Fu And  Julie Board 《Child development》1997,68(5):924-934

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.  相似文献   

Numerical investigation of cavitating flow behind the cone of a poppet valve in water hydraulic system   总被引：2，自引：0，他引：2  

高红  傅新  杨华勇  Tsukiji Tetsuhiro 《浙江大学学报(A卷英文版)》2002,3(4):395-400

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)  相似文献   

以经济增加值为核心的绩效评价体系与建设银行的改革     

付章建 《重庆广播电视大学学报》2007,19(3):44-46

随着中国建设银行的股份制改造以及上市,追求银行价值最大化日益明确地成为银行首要经营目标.而经济增加值作为目前评价及度量企业经营绩效、创造长期价值、同时又最能体现股东价值增长的最好指标之一,无疑为建设银行加快改革,真正成为国际上具有核心竞争力的商业银行提供了一种科学的绩效评价之策.  相似文献   

草业科学专业"草原生态化学"课程的教学改革与实践     

傅华  肖金玉  任继周 《高等理科教育》2007,(6):122-124

文章重点阐述了"草原生态化学"课程体系、教学内容、实验课内容和教学手段的改革,强调学生实践能力的培养。  相似文献