反垄断法律中的一个经济学谬误——关于禁止低于成本竞争的解析     

熊毅 《成都师专学报》2007,26(4):47-50

很多国家都将低于成本竞争行为归结于垄断,并通过法律加以禁止,然而如果我们运用经济理论从立法依据的科学性和法律实施的操作性分析,可以清楚地看出这一法律规定的无效性,这一分析过程和结果可以给我们的反垄断立法提供一些有价值的参考。  相似文献   

论科技期刊编辑的时效意识     

曾志红  王玉燕 《韩山师范学院学报》2007,28(2):101-104

发文周期过长是目前我国科技期刊界一个普遍存在的问题,增强编辑的时效意识是解决此问题的有效途径。科技期刊编辑的时效意识是时间意识和效率意识的有机统一,二者相辅相成,忽视任一方面都不会取得最佳效果。在工作过程中,编辑主体不但要牢固树立时效意识,而且还要注意克服短时效意识及长时效意识带来的不利影响。  相似文献   

Measurement of conversion efficiency of soft X-ray from 0.35μm laser-irradiated aluminum planar targets     

Shu-xi Ren  Hong-liang Ma Ph. D.  Rong-qing Yi  Shen-ye Liu 《上海大学学报(英文版)》2006,10(3):224-227

Conversion efficiency of soft X-ray from 0.35 μm pulse laser-irradiated aluminium planar target at laser intensities 10¹³–10¹⁵ W/cm² on the Xingguang-II facility (laser energy 5–90 J, focal spot ⊃ Ф 200 μm full width of half maximun (FWHM) 400–800 ps) was measured. A simple model was given to explain soft X-ray conversion efficiency. In this model, because of the heat conduction from the laser-heated spot, the conversion was very small at lower irradiance limit, while at higher limit it was bounded by the energy lost in blow off plasma. Consequently, at the laser intensity around 2×10¹⁴ W/cm², the X-ray conversion efficiency reaches a maximum. Project suppoted by Shanghai Leading Academic Discipline Foundation (Grant No. T0104), and Science Foundation of Shanghai Municipal Commission of Education (Grant No. 214680)  相似文献   

效率再造--报业集团做强之策略分析     

雷鸣 《平原大学学报》2006,23(2):14-16

我国报业集团化发展至今已经9个年头,报业集团的数量也已增加到目前的41家。由于报业的集团化之路缺乏必要的企业化铺垫,都或多或少地受到政治力量的推动,因此,在一定时段内各子报子刊会存在貌合神离、各自为战的现象,很可能导致“内耗”,造成“规模不经济”。因此,只有将子报子刊的资源有效整合,才能弥补报业集团浮躁发展带来的危险,才能真正实现经济学意义上的“规模经济”。  相似文献   

A new approach to increase the attainable rice yield in intensive irrigated rice systems of Zhejiang province, China     

Wang Guang-huo  A. Dobermann  C. Witt  Fu Rong-xing  Sun Qing-zu 《浙江大学学报(A卷英文版)》2001,2(2):196-203

A new site-specific nutrient management approach was developed to break the apparent attainable yield barrier of 6 t·ha⁻¹ in the double rice cropping system of Zhejiang. On-farm experiments involving 21 rice-growing farmer families and NPK long-term experiments commenced in 1997 in the central part of Zhejiang Province to assess the status of soil fertility and productivity under intensive rice-rice cropping. A new site-specific nutrient management (SSNM) approach has been developed for this studied area. Field-specific fertilizer recommendations are calculated considering indigenous nutrient supply, reasonable grain yield targets and corresponding nutrient demand, nutrient balance and nutrient use efficiency, as well as socio-economic factors. The agronomic performance of SSNM was tested against the farmer's fertilizer practice (FFP) in four 1998–1999 cropping seasons. Across seasons and years, SSNM consistently increased plant nutrient uptake, grain yield and profit by about 10%–15% compared to the FFP. Yield levels of 7.5 t·ha⁻¹ or more seem achievable and sustainable through introduction of SSNM and improved extension services in Zhejiang Province. Project supported by the International Fertilizer Industry Association(IFA), the Potash and Phosphate Institute, Canada (PPIC), and International Potash Institute(IPI).  相似文献   

房地产业的宏观调控研究     

王伦强  孙尚斌 《成都师专学报》2007,26(1):62-64

近年来我国房地产业出现了快速发展的过热现象,其原因复杂。2004年中央开始有针对性地对房地产行业进行宏观调控,但过去的和现有的政策只具有明显的短期效应。因此,各级政府必须从房地产行业目前的机制与现存的问题出发,建立与市场经济相适应的房地产业宏观调控的长效机制,真正使房地产业长期稳定健康的发展。  相似文献   

非言语交际在儿童英语教学中的应用(英文)     

高扬  胡晓琼 《海外英语》2011,(3):13-14,17

Non-verbal communication is a necessary and an important approach when we communicate with others. Teaching is also a kind of communications between teachers and students. So, non-verbal behaviors that teachers adopt during class are very useful, especially to teach pupils English. This paper is based on this and discusses different non-verbal behaviors in the pupils’ English class.  相似文献   

一个集成形式化模型及其操作语义     

匡春临  匡国防 《洛阳师范学院学报》2011,30(2):72-75

形式化方法在程序验证、模型检测的研究有着重要作用,集成形式化方法是形式化方法发展的一个方向.BCCS模型是集成B方法和进程代数CCS构建的一个混成模型,模型中给出了一个轻量级的描述语言,但缺少语义的支持.为了保证这个描述语言的完备性和一致性,本文则在传值CCS操作语义的基础上,结合B方法对抽象数据结构的定义、系统的限制以及功能处理,给出了BCCS的操作语义,进一步刻画BCCS模型.  相似文献   

提高高职英语选修课教学实效性的对策研究     

孙萍 《齐齐哈尔师范高等专科学校学报》2011,(6):138-139

高职英语选修课是英语必修课的延伸和补充,有利于促进高职学生特长发展。通过英语选修课的教学实践,对其合理设置、规范的管理,提出了一些建议和看法,从而提高英语选修课的教学实效性。  相似文献   

例谈数学课堂教学有效性的策略     

黄晋耀 《宁德师专学报(自然科学版)》2011,23(2):218-221

数学课堂的有效性是每一位数学教师要关注并思考的课题,在新课程改革的背景下,显得尤为重要.从教学备课、教学目标、学生参与、优化课堂、营造环境等方面阐述了实施课堂有效性的策略和技巧.  相似文献