在VB.NET中用ADO访问Access数据库的方法

文章介绍了怎样利用VB．NET强大的类开发功能，把ADO访问数据的方法编成组件，完全封装起来，以方便软件开发者访问数据，提高开发效率。     

Deregulating Network Industries: Dealing with Price-quality Tradeoffs

This paper examines the effects of introducing competition into monopolized network industries on prices and infrastructure quality. Analyzing a model with reduced-form demand, we first show that deregulating an integrated monopoly cannot simultaneously decrease the retail price and increase infrastructure quality. Second, we derive conditions under which reducing both retail price and infrastructure quality relative to the integrated monopoly outcome increases welfare. Third, we argue that restructuring and setting very low access charges may yield welfare losses, as infrastructure investment is undermined. We provide an extensive analysis of the linear demand model and discuss policy implications.     

Property rights protection and access to bank loans

Poor protection of private property has limited the access to bank loans by private enterprises in developing and transition economies. Under those circumstances, private entrepreneurs have resorted to various ways of enhancing the de facto protection of private property. Using a dataset of 3,073 private enterprises in China, this paper empirically investigates the impact of political participation and philanthropic activities – informal substitutes for the lack of formal protection of private property – on the access to bank loans.     

Pricing access in network competition

We compare various access pricing rules in the two-way access model. We show that the Generalized Efficient Component Pricing Rule (TECPR) leads to a lower equilibrium price than does the Efficient Component Pricing Rule, (ECPR) marginal cost pricing, (MCP) and any non-negative fixed access charges.      

用Delphi实现任意文件的数据库存取

介绍在Delphi中，如何利用流、BLOB、OLE以及结合WinRAR压缩软件，进行任意文件的数据库存取，从而解决Delphi对文件数据在数据库中各种编程的操纵．     

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.     

Telecommunications policy and individuals with disabilities: Issues of accessibility and social inclusion in the policy and research agenda

Information and communications technologies have become an integral part of life in an information society, affecting employment, education and many other daily activities. For individuals with disabilities, equal access to telecommunications remains a concern, as many technologies that are developed do not allow for equal access. Law and policy have made significant progress in some nations, but sizeable barriers remain to the social inclusion of individuals with disabilities in telecommunications technologies and services. This paper examines the importance of equal access to telecommunications for individuals with disabilities in both the formulation and the implementation of policy. Analyzing issues of policy and implementation, this paper discusses policy questions and potential areas of research to better understand the relationship of telecommunications policy to access for persons with disabilities.     

面料性能预测与设计软件的VB6.0实现技术

用VisualBasic6.0编程开发了方便、快捷、实用的面料性能预测与设计软件,该软件建立了MicrosoftAc-cess类型数据库,通过调用ADO控件进行数据连接。主要介绍开发此软件过程中所遇的一些问题及其解决方法和技巧。     

Planes,trains and wheelchairs in the bush: Attitudes of people with mobility-disabilities to enhanced motorised access in remote natural settings

Managers of remote and wilderness environments have been among the last to accommodate the needs of tourists with mobility-disabilities – partly because of the physical difficulties and expense of doing so, but also due to a wider desire and mandate to preserve the natural and wilderness character of such areas. This research explores the extent to which those with mobility-disabilities desire enhanced access to natural areas. Do they share the same desires and values with respect to wilderness and access as the able-bodied? This paper reports upon a survey of over 400 residents and tourists, some with mobility-disabilities and some able-bodied, and compares their attitudes with respect to the development of various forms of motorised access to wilderness environments. Significant differences were found between the two groups in terms of their desire for greater access and also in how they view the impacts of such development. The group with mobility-impairments expressed a stronger desire for enhanced access in such environments. The environmental values of both groups were also examined using the revised New Ecological Paradigm scale, however no significant differences were found between the groups. The implications for tourism providers and wilderness managers are discussed.     

Evolution and determinants of digital divide in Brazil (2005–2013)

During the last decades, the widespread growth of information and communication technologies (ICT) has posed incentives to broaden the participation of individuals in social, political and economic dimensions of life. However, utilization of ICT also involves access to technology and infrastructure, and acquisition of skills to deal with innovations and, thus, digital literacy is, primarily, a complementary good. The digital divide expresses inequalities in access and utilization of ICT among individuals and populations in different countries. The study adopts inequalities indexes of Internet access and mobile phone ownership to measure use of ICT goods, accounting for the digital divide in Brazil. The inequality indexes are also split according to main determinants using four nationally representative survey data from 2005 to 2013. Results indicate that the digital divide among individuals is decreasing quite fast among Brazilians over time. However, there is room for policies of mass access to ICT goods based on mobile Internet broadband access. In addition, digital illiteracy, evaluated by lack of education, is one of the main determinants of the digital divide in the country, especially among elderly individuals.