Problem-solving in teaching/learning packages for Technology

In the project Technology in Secondary Education: Problem-solving in Teaching/learning Packages, two experiments regarding a construction problem and an explanation problem were conducted, in which two variants of a teching/learning package (strongly structuredvs. weakly structured) were compared. Only with the strongly structured instructional variant of the package for the explanation problem did the pupils come to a quick solution of the problem. In both experiments, the factors that influenced the problem-solving processes of the pupils were investigated. The results are of importance for curriculum developers and the authors of teaching/learning packages for Technology but further research into the factors influencing the problem solving process of pupils is necessary.     

The formation and early development of German audit firms

This paper examines the emergence of audit firms in Germany through an analysis of contemporary sources. Special attention is paid to the range of services offered, their legal forms and ownership structure. In Germany, the demand for external audits developed because the corporate supervisory boards had been unable to fulfil their monitoring task satisfactorily. As a consequence of the major economic crisis of 1929-1931 and the collapse of large corporations caused by the fraudulent actions of managing directors, statutory audits for stock corporations were introduced in 1931. The first German audit and trust company, the Deutsche Treuhand-Gesellschaft, was established much earlier in 1890. Like other trust companies which emerged from 1905 onwards, it was owned by large banks. After the First World War, large commercial groups on the one hand, and the state on the other hand, started to form their own audit firms. Most of the audit and trust companies used the legal form of a corporation. Originally, the main activities of the trust companies were trustee activities and audits. Subsequently, they also offered tax and business advisory services. These features (a broad range of services offered, the corporation as the dominant legal form, and clients who are also owners) help us to understand key characteristics of modern German audit firms such as their limited liability to third parties.     

竞争力、市场微观结构与证券交易所变革

纽约证券交易所和纳斯达克实施的重大并购行动标志着全球证券交易所新一轮并购浪潮的兴起,证券交易所之间的竞争再度趋于白热化.交易所之间的竞争已演变为市场微观结构的竞争.本文对纽约证券交易所和纳斯达克的交易成本进行了比较,无论是上市成本还是交易成本,新兴的纳斯达克都比传统的纽约证交所更胜一筹.因而本文认为有效降低交易成本应是提高交易所核心竞争力的关键所在,而改进交易机制、拓展产品服务以及调整组织架构,可以作为降低交易成本、提高交易所竞争力的具体竞争策略.     

开放经济条件下中国货币政策的内在矛盾

货币政策是由货币数量政策和货币价格政策组成的一个系统,对资源配置起重要作用的是一个国家的货币价格政策.而中国货币政策的内在矛盾则表现为汇率政策与货币数量政策和利率政策的矛盾,以及汇率政策与利率政策的不协调.     

论以完善的财政政策促进区域经济发展

区域经济是国家宏观经济的重要组成部分,在我国已形成了东、中、西部三大经济区域,在东部沿海又形成了珠三角、长三角和京津唐三个经济区,但在其发展过程中出现了一些违反国家财政政策的情况.本文从现行状况入手,对存在的财政问题进行了剖析,提出了若干可行的解决建议.     

用能量方法求解一次超静定杆系问题

根据功能原理建立能量补充方程,并利用静力平衡方程,求解一次拉压超静定问题。该方法同时可用于扭转、弯曲等一次超静定问题的求解。     

Regulation and investment behaviour in the telecommunications sector: policies and patterns in US and Europe

This paper reports the results of the quantitative analysis of international experience of the relationship between infrastructure investment in the deployment of capacity that can carry large volumes of voice and data traffic and regulatory policy changes in the telecommunications sectors. It looks at the relationship between infrastructure investment for these infrastructure assets and the access pricing régimes for local exchange carriers in the United States and Europe. It then looks at the relationship between various aspects of regulatory and institutional policy changes in Europe and how they affect access prices.The paper finds that a lower access price promotes greater deployment of digital technology among US incumbent local exchange carriers (ILECs). Based on this finding, it suggests that it is in the ILECs interest to have access to their networks encouraged.The European data for interconnection are recent and far reaching conclusions are not feasible, but the findings, however, suggest that competition has worked by facilitating new entry through decreasing interconnection prices, although path dependencies, of existing and traditional concepts, in the mindsets of operators as well as regulators, may account for these findings.     

国外促进就业的财政政策及借鉴

面对日益严峻的就业形势，世界各国十分重视发挥财政在促进就业中的作用。本文着重通过考察世界各国在促进就业方面所采取的财政政策， 探讨我国财政应如何在促进就业工作中更好地发挥作用。     

Seasoned Equity Issues in a Closely Held Market: Evidence from France

This paper examines seasoned equity offerings in France.Even though a rights offering is the primary flotation method, French companies are increasingly usingthe relatively expensive public offering method. We show that the market reaction to the announcementof seasoned equity issues is significantly negative for rights issues and insignificantly negative forpublic offerings. Our results suggest that the adverse selection effect is greater for rights issues thanfor public offerings, due to stronger underwriter certification for the public offerings. We find that theshare price effect is positively related to blockholders take-up renouncements for firms with priorconcentrated ownership. For these firms, the favourable ownership dispersion effect offsets the adverse selection effect.     

Pollution Externalities in a Model of Endogenous Fertility and Growth

An endogenous growth model with human capital formation, pollution caused by production of consumption goods, and endogenous fertility decisions made by altruistic agents with infinite horizons is presented. Consequences for optimal policy of modelling fertility as an explicit decision variable are examined. Because ordinary lump-sum transfers to individuals are no longer neutral, either revenue from a pollution tax must be redistributed to dynasties (working as an implicit tax on child births), or lump-sum transfers must be supplemented with an explicit fertility tax. Alternatively, the government can avoid distortions of the fertility decisions by maintaining an appropriate public debt. When abatement is highly productive, it can be optimal to subsidize fertility in order to increase total production.