中国上市公司环境信息披露现状研究

本文通过对我国沪深两市的1000余家上市公司2002、2003年度会计报告中有关环境信息的统计调查,分析了目前我国上市公司环境信息披露的现状及存在的问题,并对提高我国上市公司的环境信息披露的质量作了简要的展望。     

可持续发展的环境伦理观——可持续发展与水资源的永续利用

在环境危机日益严重的情况下提出了环境伦理与可持续发展,它的提出为人类解决环境问题提供了新的思路。鉴于目前水资源面临的严峻考验,从可持续发展环境伦理观的角度对水资源问题,尤其是对我国用水量最大的农业灌溉用水的节水问题进行了讨论,提出了一些降低农业用水量,提高用水率的对策。     

中国-东盟博览会：当前广西图书馆信息服务的机遇与挑战

中国—东盟博览会在南宁举办,将给广西带来勃勃生机,也给广西图书馆信息服务带来机遇与挑战。中国—博览会将是图书馆信息服务新的生长点:中国—东盟博览会的举办,需要大量的信息,从而直接推动图书馆信息服务生长点的形成;区域经济的大发展,必将吸引大量人才,人才的聚集直接对信息产生需求;教育文化事业的发展,为图书馆信息的服务造就更广大的用户群。因此,要充分发挥图书馆信息资源优势,服务博览会:加强图书馆信息资源的建设;完善图书馆信息服务的管理机制;对外开放高校馆藏信息资源。要增强信息服务质量意识,优化服务功能;形成信息服务产业,参与市场竞争。     

大学生网络群体极化的成因及对策研究

网络群体极化的发生是由网络环境下群体行为的心理特征、沉默的螺旋及网络中无处不在的信息过滤与茧房共同造成的。大学生作为使用网络的主力军,在信息的选择和接收上也更容易走向极端。大学生网络群体极化的主要表现为网络环境下的从众心理、简单化思维、长时间沉湎于劣质信息的茧房。大学生网络群体极化的防治要靠培育学生的责任意识、思政工作者的正确引导及政府对网络的监管共同发挥作用。     

基于业务流程重组的信息系统开发

业务流程重组是从企业整体运作的层次上对管理及流程进行变革 ,来分析和优化原有业务环节 ;信息系统在合理的业务流程基础上实现对企业资源的有效利用与管理 ,从而辅助企业成功实施战略 ,保持竞争优势。本文系统地分析了开发基于企业再造的信息系统的意义与思路 ,详细阐述了信息系统开发各阶段的特点 ,并提出了今后的努力方向     

村民是如何化解环境健康风险的?

污染—疾病科学关系不清及制度安排问题等因素致信息不全,加之村民相关科学知识的缺乏,是村民环境健康风险认知的根本性障碍,但村民并没有如简单预设的那样处于"束手待毙"的状态。在乡村社区,村民利用"熟人社会"的社会结构和文化机制把有限的信息无限利用,有效地应对了信息不全的困境。面对外源性污染,并且无法改变污染现状的格局下,村民根据生活经验和常识策略性地化解健康风险。村落社会中的亲缘、地缘关系结构以及精英—大众结构也影响了村民对环境健康风险的规避。村民化解环境健康风险虽然缺乏成熟的科学指导,却有其独特的实践逻辑。     

The Pacific Rim Library: A Surprising Pearl

The Pacific Rim Library (PRL) is an initiative of the Pacific Rim Digital Library Association (PRDLA). The project began in 2006 using the OAI-PMH paradigm and now holds over 300,000 records harvested from OAI data provider libraries around the Pacific. PRL's goal is to enable the sharing of digital collections amongst PRDLA members and the world, but greater unexpected benefits have been discovered. Through mirroring their metadata, PRL increases the chance that their data will be discovered in Google and other general search engines. With its many disparate collections, PRL is not a repository for traditional information discovery and retrieval. Initially users will bounce from a Google hit to the PRL metadata record in Hong Kong and then begin an intensive search on the original site which hosts the full digital object, in Vancouver, Honolulu, Wuhan, Singapore, or other PRDLA member location.     

Visualizing the factory through meta- manufacturing processes

Milestone or deadline driven production management is predominant in most manufacturing companies. Problems and other disturbing occurrences tend to see their first daylight during phases where plans are implemented into reality, for example, when production commences, prototypes enter manufacturing and deliveries are expected. Conventional control routines fail to depict the true progress and procedures of the company on an on-line basis, which means that instead of being proactive they serve as means to react to already existing problems. This paper studies the application of advanced visualization techniques to the already existing information embedded in a comany's information infrastructure, and how it can help management to anticipate probable near future pitfalls. By studying those daily operations of a company which share a document relationship with the true manufacturing process, that is, the meta-manufacturing processes, a completely new perspective on the company's value-adding activities is drawn. By mining the existing data reservoirs of a company traditionally difficult management processes, such as product development, vendor integration, production planning, can be analysed and the problems identified in a novel way to react in advance. The paper displays several empirical examples from bulk to one-of-a-kind production where the method has been successfully implemented.     

Lag Length Selection for Unit Root Tests in the Presence of Nonstationary Volatility

A number of recent papers have focused on the problem of testing for a unit root in the case where the driving shocks may be unconditionally heteroskedastic. These papers have, however, taken the lag length in the unit root test regression to be a deterministic function of the sample size, rather than data-determined, the latter being standard empirical practice. We investigate the finite sample impact of unconditional heteroskedasticity on conventional data-dependent lag selection methods in augmented Dickey–Fuller type regressions and propose new lag selection criteria which allow for unconditional heteroskedasticity. Standard lag selection methods are shown to have a tendency to over-fit the lag order under heteroskedasticity, resulting in significant power losses in the (wild bootstrap implementation of the) augmented Dickey–Fuller tests under the alternative. The proposed new lag selection criteria are shown to avoid this problem yet deliver unit root tests with almost identical finite sample properties as the corresponding tests based on conventional lag selection when the shocks are homoskedastic.     

Information

Information technology is increasingly being used in the human services, but reports suggest that some professionals are resisting its introduction. Some accounts for this resistance emphasise the role of the technology's physical attributes. It may, however, be due more to mistaken assumptions by some professionals about the role of the technology in generating information in human service contexts. Information as a concept has different interpretations according to its usage. It is the author's contention that there has been a failure to differentiate between the use of the concept in different settings and this is a possible causal factor in producing resistance. This paper examines information as used in communication theory and the human services and emphasises the need for a thorough examination of the role of information in professional social work education and practice.