欧盟新的共同贸易政策对我国石化行业的影响

简单介绍了欧盟新的共同对外贸易政策，包括市场准入战略，反倾销战略，新普惠制，统一技术标准与法规等。着重探讨了欧盟及共同对外贸易政策对我国石化行业造成的影响，并提出了应对策略。     

物联网访问控制策略探析

随着计算机技术的快速发展,各种物联网应用在人们生活中越来越多,因而物联网安全问题也更加引人关注。针对物联网安全中的访问控制问题,分析物联网分层结构中各层的安全需求,给出联网的环境下的访问控制策略供参考。     

基于自律计算的多数据点闭值检测方法

自律计算在实施过程中通常采用阂值来标记性能故障。阂值是系统的性能计数器的边界值,系统自动检测这些边界值。若某个设备的性能指标达到这些边界值,则表示系统的某台设备出现了性能故障,自律系统的自主管理器便会主动采取策略来修复性能故障,从而保证系统一直处于稳定的工作状态。目前,自律计算领域欠缺对于系统性能故障的研究。在研究自律计算自我监视的基础上,提出了一种多数据点的阂值检测方法,即通过多次检测阂值的越界和恢复来判断系统是否出现性能故障,以保证检测的有效性,为系统采取策略修复故障提供有利的依据。     

Stagnating liquid biofuel developments in Russia: Present status andfuture perspectives

It is widely acknowledged that Russia possesses enormous biomass resources (Hoogwijk et al., 2005). Its vast areas devoted to agricultural production and plentiful timber resources suggest good prospects for the development of liquid biofuel production. However, no significant advances in this direction have been reported till now. None of the numerous investment projects announced at the heydays of biofuel excitement in Russia (2006−2008) are at the moment commercially operating. There are no specialised plants for the production of bioethanol and biodiesel in Russia. Little is known of the reasons for this discrepancy between biofuel potential and actual development. In investigating this discrepancy, this article analyses national developments and investigates local dynamics through a case-study in the Omsk region. It is found that the reasons for this discrepancy are not related to technological incapabilities, but are to be found in the low policy and institutional priority given to non-fossil fuel exploitation and lack of market opportunities. Sprouts of second generation liquid biofuel technologies can be identified within the state system, but it remains to be seen how strong and how long these will be supported by the Russian state.     

Coming soon to a service station near you

The processes of urban consolidation are described, detailed and reviewed in three local government areas in Sydney since 1980. This provides an integrated account and analysis of how market forces and planning policies have actually delivered dwelling stock on the ground. Distinctive aspects of urban consolidation in each local government area are reviewed.     

Electricity's future

Economic development will continue to be dependent on the avalability of electric power and environmental concerns will play a major role in the choice of new generation technologies required to alleviate the forecasted shortages for most nations before the end of this century. Advanced technologies for the combustion of fossil fuels and splitting the atom, the predominant existing global resources for the production of power, will have to meet increasingly more stringent standards for public acceptance.     

《旅游政策法规》课程教学改革探析

《旅游政策法规》是旅游类专业的一门专业基础课,也是全国导游资格考试的必考科目,对学生职业能力培养、职业素质养成及职业发展具有十分重要的作用.但在实践教学中,由于诸多原因导致学生学习兴趣不高,教学效果欠佳.为此,应根据课程特点及旅游高职高专人才培养目标要求,因材施教,进行教学内容、教学方法、教学手段、考试方式改革,调动学...     

A review of climate change, mitigation and adaptation

Global climate change is a change in the long-term weather patterns that characterize the regions of the world. Scientists state unequivocally that the earth is warming. Natural climate variability alone cannot explain this trend. Human activities, especially the burning of coal and oil, have warmed the earth by dramatically increasing the concentrations of heat-trapping gases in the atmosphere. The more of these gases humans put into the atmosphere, the more the earth will warm in the decades and centuries ahead. The impacts of warming can already be observed in many places, from rising sea levels to melting snow and ice to changing weather patterns. Climate change is already affecting ecosystems, freshwater supplies, and human health. Although climate change cannot be avoided entirely, the most severe impacts of climate change can be avoided by substantially reducing the amount of heat-trapping gases released into the atmosphere. However, the time available for beginning serious action to avoid severe global consequences is growing short. This paper reviews assessing of such climate change impacts on various components of the ecosystem such as air, water, plants, animals and human beings, with special emphasis on economy. The most daunting problem of global warming is also discussed. This paper, further reviews the mitigation measures, with a special focus on carbon sequestration and clean development mechanism (CDM). The importance of synergy between climate change mitigation and adaptation has been discussed. An overview of the relationship between economy and emissions, including Carbon Tax and Emission Trading and the policies are also presented.     

LOCAL KNOWLEDGE OF SWIDDEN FARMERS AND CHALLENGES FOR SUSTAINABLE LAND USE: LESSONS FROM A WATERSHED MANAGEMENT PROJECT IN NORTHERN LAOS

In Laos, located in mainland Southeast Asia, shifting cultivation has been one of the important means of livelihood, in terms of food security as well as religious and cultural anchorage, for local communities in a number of areas, especially in upland areas in the country. In Pakbeng District, Oudomxay Province, northern Laos, due to the implementation of various land and forest management policies and a village relocation and consolidation program, local communities were restricted from access to the forests and faced a shortage of agricultural lands. After facing difficulties in securing sufficient lands, the local farmers used the forests in a destructive manner. The author of this article was engaged with the Community-based Watershed Management Project, as a program director of an environmental NGO and tackled challenges to achieve a land and forest management system suitable for land use by local communities. The NGO attempted to apply an alternative approach to incorporate swidden farmers’ land use system into official land and forest management institutions.