学术期刊属性研究

在编辑传播学界关于学术期刊属性的研究上,普遍存在着一个突出的问题,这就是论者们几乎不假思索地认为“学术期刊是商品”。我们认为,这是一个很大的误区,这种认识在理论上是错误的,在实践上是有害的。首先,“学术期刊商品论”是自相矛盾的;其次,“学术期刊商品论”与马克思主义经济学是相悖的;再次,“学术期刊商品论”与普遍存在的事实是恰恰相反的。学术期刊和学术事业是一项创新的事业,它关系一个国家的生存安危,对此,江泽民同志曾经反复强调,创新是一个民族进步的灵魂,是国家兴旺发达的不竭动力之源。因此,对待学术和学术期刊事业应当像对待军队、警察机构一样,不能也不可能使其商品化,学术期刊应该走自己的健康发展之路。     

Disagreement over the immigration of low-income earners in a welfare state

This paper studies natives’ economically motivated preferences over different levels of immigration of low-income earners. Immigration affects natives through both intra- and intergenerational redistribution programmes and in the labour market. Our analysis suggests, in a welfare state that looks after the poor and the aged, economic motivation does not necessarily lead a native to have an extreme opinion on the preferable level of immigration, although it causes disagreement among natives. We find, regardless of parameter values, high-income earners prefer at least as much immigration as low-income earners who, in turn, prefer at least as much immigration as pensioners. The median voter is then likely to be a low-income native.

基于粒子群算法与改进Ziegler-Nichols算法的PID整定方法

针对Ziegler-Nichols算法设计的PID控制器阶跃响应不理想,不具有灵活性等缺点,提出基于粒子群算法与改进 Ziegler-Nichols算法的PID整定方法。采用粒子群算法优化了Ziegler-Nichols算法中的幅值和相角,设计了具有更好性能 指标的PID控制器。实验结果表明采用该方法进行参数整定后的PID控制器响应速度较快,降低了系统的超调量。     

城市历史建筑保护对策研究——以粤港为例

随着经济和商业社会的发展,城市开发建设不同程度地蚕食历史建筑,破坏历史街区的整体风貌。历史建筑是人类发展痕迹的见证,一定程度上反映着地域文化。保护历史建筑也是保护地域文化。粤港政府在历史建筑保护工作方面积累了不少经验,通过分析粤港两地历史建筑保护措施,提出对城市历史建筑保护与利用的对策建议。     

STOCHASTIC COST-VOLUME-PROFIT ANALYSIS WITH A LINEAR DEMAND FUNCTION

In this paper we incorporate a linear demand function to model the price-volume causal relationship into stochastic cost-volume-profit (CVP) analysis. We assume that the objective function is to maximize expected profit; other objective functions are also discussed and compared. A linear stochastic model follows from which probabilistic statements can be easily obtained if the random variables are assumed to be multivariate normal. The basic framework is shown to be a special case of project value maximization where project value is the cash flow of the project discounted for time and risk according to the capital asset pricing model. Moreover, an intertemporal extension that considers inventory is developed. In summary, a new approach to stochastic CVP analysis that incorporates the management decision process in an uncertain environment is developed.     

控股股东与经营者一体化存在的问题及其治理

文章通过对控股股东与高层管理者的关联性描述,指出了控股股东与经营者的一体化趋势;然后从产权理论、交易费用理论和控制权收益三个角度对这种趋势进行原因分析;最后针对一体化带来的负面影响提出相应的对策。     

Possibilities for Using the Internet in Japanese Education in the Information Age Society

As the globalization of the economy has accelerated in recent years, the Internet has become an essential part of the infrastructure, primarily as a communications medium. In the Information Age society, the ADC principle (autonomy, distribution, and collaboration) has become an underlying assumption, which also applies to the institution of education. The fading power of Japan may come from its educational system, which emphasizes standardization and uniformity, while discouraging creativity and individuality. Now is the time for Japan to reevaluate its educational system at every level so that it better supports the societal and business needs of the Information Age economy. Therefore, this paper proposes five kinds of changes to the Japanese educational system. They are community networks, digital kids and participatory education, growing up digital and youth education, online higher education, and media literacy education for the elderly. First, community networks provide citizens with better and more convenient access to local services, activities, and information. Second, the notion of the digital kid suggests that it should be participatory, including all members of the community. Third, as digital kids grow up digital using the Internet would enhance both intergenerational and intra‐generational communication in the twenty‐first century. Fourth, online higher education should become widely available in Japanese society in the twenty‐first century. Fifth, although media literacy education for the elderly in Japan is yet to come to its maturity, senior network groups are beginning to receive wider attention as they will provide Japanese elderly with a new avenue for communication. When and only when these educational reforms are pursued, will Japanese people be able to participate effectively in the global society.     

一类图的优美性

本文考虑Mobius带上格子图的优美性问题，证明了M（n，2）是优美图．