中国西部开发中的环境财政金融问题探讨

中国目前实施的西部大开发和第１０个“五年”计划中，环境的治理和保护已成为实现经济增长和可持续发展的关键。本文从实际出发，按照市场经济原理，就国家、企业、个人和国际社会在环境保护和治理上，应承担的财政金融责任进行了较为深入地探讨．其目的在于实现发展与环保的统一与协调。     

电子商务立法刍议

我国的电子商务立法 ,可先采用条例形式 ,在今后实践中再充实完善。电子商务法应设置总则 ;未满十周岁的儿童不能成为电子商务的主体 ,所产生的法律后果由监护人承担 ;认证机构应具有电子商务的主体资格。对签署、证据、成立等行为应作出效力规定 ;各级工商行政管理局是电子商务的行政管理机关 ,各级邮电管理局也应成为管理机关。当事人在交易中违反民事法律 (规 )、合同约定的 ,均应承担民事责任。     

Language translation for file paths

Forensic examiners are frequently confronted with content in languages that they do not understand, and they could benefit from machine translation into their native language. But automated translation of file paths is a difficult problem because of the minimal context for translation and the frequent mixing of multiple languages within a path. This work developed a prototype implementation of a file-path translator that first identifies the language for each directory segment of a path, and then translates to English those that are not already English nor artificial words. Brown's LA-Strings utility for language identification was tried, but its performance was found inadequate on short strings and it was supplemented with clues from dictionary lookup, Unicode character distributions for languages, country of origin, and language-related keywords. To provide better data for language inference, words used in each directory over a large corpus were aggregated for analysis. The resulting directory-language probabilities were combined with those for each path segment from dictionary lookup and character-type distributions to infer the segment's most likely language. Tests were done on a corpus of 50.1 million file paths looking for 35 different languages. Tests showed 90.4% accuracy on identifying languages of directories and 93.7% accuracy on identifying languages of directory/file segments of file paths, even after excluding 44.4% of the paths as obviously English or untranslatable. Two of seven proposed language clues were shown to impair directory-language identification. Experiments also compared three translation methods: the Systran translation tool, Google Translate, and word-for-word substitution using dictionaries. Google Translate usually performed the best, but all still made errors with European languages and a significant number of errors with Arabic and Chinese.     

The role of non-timber forest products in poverty reduction in India: prospects and problems

The vast natural resources of India's forests, including non-timber forest products (NTFPs), such as medicinal and aromatic plants, leaves, fruits, seeds, resins, gums, bamboos, and canes, offer employment that provides up to half the income of about 25 per cent of the country's rural labour force. However, poor harvesting practices and over-exploitation in the face of increasing market demand are threatening the sustainability of these resources, and thus the livelihoods of forest-dependent tribal communities. This article analyses the role of NTFPs in livelihoods-improvement initiatives and considers recent initiatives intended to enhance their conservation and sustainable management. It recommends policies to optimise the potential of NTFPs, both to support rural livelihoods and to contribute to India's social, economic, and environmental well-being.     

Integrating participatory elements into conventional research projects: measuring the costs and benefits

Until recently, participatory and conventional approaches to agricultural research have been regarded as more or less antagonistic. This article presents evidence from three sub-projects of a Thai–Vietnamese–German collaborative research programme on ‘Sustainable Land Use and Rural Development in Mountainous Regions of Southeast Asia’, in which participatory elements were successfully integrated into conventional agricultural research as add-on activities. In all three sub-projects the costs of studying local knowledge or enhancing farmers' experimentation consisted of additional local personnel, opportunity costs of participating farmers' time, and travel costs. However, these participatory elements of the research projects constituted only a small fraction of the total costs. It may be concluded that conventional agricultural research can be complemented by participatory components in a cost-effective way, while producing meaningful benefits in terms of creating synergies by blending scientific and local knowledge, scaling up micro-level data, and highlighting farmers' constraints affecting technology adoption.     

现代农业地域模式及现存问题

随着社会生产力的发展，农业现代化是世界农业发展的必然趋势，我国也正处于向现代化农业过渡的阶段。介绍国外现代农业模式以及出现的相关问题，可以为我国农业发展起到重要的借鉴作用。     

浅谈数码照相在交通事故处理中的运用

目前,大多数基层公安机关,特别是一线交通事故处理部门仍然使用传统胶片相机,在一定程度上影响了办案效率和办案质量。文章试图对数码照相在交通事故处理中的作用做些粗浅的分析,旨在引起大家对数码照相在交通事故处理中重要性的认识,掌握运用数码照相机时应注意的问题。     

Blood and sperm traces on human hair. A study on preservation and detection after 3-month outdoor exposure

Hair can retain important biological traces for forensic investigations. Forensic scientists are used to looking for such traces on clothing and skin of victims, however, when decomposition kicks in and all that remains of the victims is the skeleton, hair may be the only tissue representing the surface of the body at the time of a crime on which biological traces of an aggressor may have been left and still be detectable. Given the lack of research on this topic, this pilot study aims to assess the capacity of hair to retain semen and blood in hair, and the possibility to detect these fluids with well-known techniques and to obtain a useful genetic profile even when exposed to environmental conditions (Open Natural Environment (woods), Open Man Made Environment (urban)) for three months.Results showed that both traces were always visible and detectable with almost all techniques in the Control Environment, while in the two open environments some difficulties arose. However, biomolecular analysis was effective up to three months on both fluids in the Natural Environment and up to two months and one week respectively on blood and semen in the Man Made Environment. The Combur Test, OBTI, and Luminol were effective on blood up to three months in both environments while Sperm-HY-Liter and observation of cellular components were effective on semen up to at least 1 month and PSA testing was positive up to 1 week in both environments.The present work can be considered an encouraging starting point for the analysis of biological traces on hair in forensic contexts, regardless of the PMI, since blood and semen related to a crime may survive.     

Shifting forensic science focus from means to purpose: A path forward for the discipline?

Forensic science is facing a persistent crisis that is often addressed by organizational responses, with a strong focus on the improvement and standardisation of means and processes. However, organisations and processes are highly dependent on the political, economical and legal structures in which they operate. This may explain why most proposed solutions had difficulties in addressing the crisis up to now, as they could hardly be applied transversally to all forensic science models. Moreover, new tools and technologies are continuously developed by a quasi-infinite number of different scientific disciplines, thus leading to further diversity and fragmentation of forensic science. In this paper, it is proposed to shift the focus from means to purpose and consider forensic science current challenges in terms of discipline, before addressing organisations’ specific issues. As a distinct discipline, forensic science can refocus research and development on shared principles and purposes, such as reconstructing, monitoring, and preventing crime and security issues. This focus change will facilitate a better understanding of the trace as the object of study of forensic science and eventually lead to a more impactful and long-lasting effect. This approach will also foster the development of a forensic science culture (instead of a primarily technological culture) unified by purpose rather than means through more relevant education and research.     

Descrambling data on solid-state disks by reverse-engineering the firmware

Data recovery is an important component of digital forensic research. Although recovering data from hard drives or small-scale mobile devices has been well studied, solid-state disks (SSDs) have a very different internal architecture and some additional functions, and it is not clear whether these differences will have an effect on data recovery. Data scrambling is an additional function of an SSD controller which can improve data reliability, but makes data recovery difficult. In this research, the dedicated flash software was first introduced that can acquire the physical image of an SSD without destroying the device hardware. Based on the software, a validation experiment was presented to evaluate the effect of data scrambling on data recovery and the causes of the effect were analyzed. Then two approaches to descrambling the data in the flash chips were proposed and their advantages and disadvantages discussed. After that, a procedure to identify the scrambling seeds that are used to descramble the scrambled data was described. Finally, descrambling software was implemented based on the second descrambling method. The experiment shows that this software can successfully descramble the data from an SSD flash drive regardless of the internal structure of the scrambler in the SSD controller and can generate an unscrambled physical image on which most existing data-recovery techniques can be effective.