三江源移民安置区农户能源利用及对生态环境影响——以贵南县为例

三江源地区是长江、黄河、澜沧江三大河流的发源地,是我国重要水源涵养区,由于其生态系统十分脆弱,生态地位特殊,受到广泛的关注。本研究从三江源移民安置区农户能源利用对三江源生态系统影响的角度,使用问卷调查法、半开放式访谈法和生态系统服务功能评价法,对三江源移民安置区农户能源利用现状、农户对现有能源满意度和农户能源环保认知对三江源生态系统服务功能价值影响进行研究,结果表明:①三江源移民安置区种植农户能源利用结构较多样,以畜粪和秸秆为主要能源,放牧农户能源利用结构单一,基本依靠畜粪;②农户普遍对能源现状满意度低,放牧农户满意度低于种植农户;③农户倾向于使用环保能源,但对能源环保认知度较低,阻碍了清洁能源的广泛使用;④农户使用生物质能源导致生态系统服务功能价值每年损失约23.6737亿元。     

敦煌与九华山文化交流的历史考证

在敦煌莫高窟的藏经洞被发现110周年之际,笔者着眼于长江之南的九华山与丝绸之路的敦煌文化交融的历史进程,考证了[天仙子]留住九华云一片、[捣练子]原是傩戏《孟姜女》的片断、傩舞《舞回回》竟然是《西凉伎》的孑遗、敦煌也有《目连救母幽冥宝传》、敦煌壁画中的地藏菩萨、流落海外的地藏绘画品等文化现象,研究了敦煌与九华山的文明互动,初探了敦煌与九华山之间的文化因缘。     

国际能源合作中的国家能源主权原则研究

文章介绍了作为国际能源合作的重要基础的国家能源主权原则的概念和渊源,认为国家能源主权是国家主权原则在国际能源合作中的要求,具体表现为国家对本国能源事务的自主权、国家对其境内的能源资源的永久主权、国家对境内能源外资实行国有化或征收的权力及国家对能源外资的管辖权;同时,能源主权是发展中的能源资源国谋求经济独立与发展的前提。本文认为国家能源主权原则的具体使用在新的全球能源合作机制中将面临着调整,需要适度现实国家能源主权原则,同时,需要防止滥用国家能源主权而形成的资源民族主义,从而对国际能源合作造成负面的影响。     

论数字信息交流

数字信息交流的方式有三种:11;1n(n>1);1→nn(n>1)。它是一种全方位、高效率的交流方式,其互动性、个性化特点极为突出,并且出现了基于“虚假身份”的信息交流。数字信息交流存在的问题有:对传统社会信息交流秩序造成了冲击;使社会信息公平受到挑战;给信息保存、积累带来困难。推进数字信息交流健康发展,首先要从弘扬先进文化、发展信息技术和加强中介机构建设做起。参考文献4。     

河北省能源消耗强度变动及因素分解

根据2005-2010年能源消费数据及相关经济数据,分析了河北省能源消耗强度的时空变化特征;运用Laspeyres指数及其分解模型将河北省能源消耗强度的影响因素分解为结构因素和效率因素。结果表明:研究期内河北省能源消耗强度稳步下降,但空间差异较大;研究期能源消耗强度降低主要贡献因素是第二产业能源利用效率的提高;相对于效率份额,结构份额对能源消耗强度的影响很小,研究期内产业结构变动对能源消耗强度降低的总体影响是负面的。     

基础教育师资职前实训与职中研修的协同模式探讨——基于“国培计划·顶岗置换”项目的实践思考

"国培计划"中的"顶岗置换"项目是高校师范生实习与农村中小学教师脱产研修有机结合的一种新模式,是基础教育师资职前实训和职中研修协同促进模式的有效尝试。本文基于对师范生实践教学保障不足、农村中小学教师培训面临的困难等问题分析,总结了"国培计划·顶岗置换"双向协同促进机制的状况,提出了发挥区域统筹、县域主导、经费分担和双重双向担责等进一步优化完善基础教育师资职前培养和职中研修协同机制的对策建议。     

Tension in In a Station of a Metro to Explore the Energy in Language

Pound’s poem In a Station of a Metro is a masterpiece of imagism. Pound once talked about the energy in language, and American scholar Allen Tate told us that the meaning of poetry is its tension. Base...     

基于Adhoc能量均衡的AODV协议改进

针对Adhoc网络中移动节点能量受限的问题,考虑节点剩余能量和节点能量消耗速率两方面因素,对AODV协议,在选路机制,hello机制几个方面作了改进,改进后的路由协议能够有效均衡负载,保护低能量节点,延长网络生存时间。     

A study on forecasting electricity production and consumption in smart cities and factories

The electrical power sector must undergo a thorough metamorphosis to achieve the ambitious targets in greenhouse gas reduction set forth in the Paris Agreement of 2015. Reducing uncertainty about demand and, in case of renewable electricity generation, supply is important for the determination of spot electricity prices. In this work we propose and evaluate a context-based technique to anticipate the electricity production and consumption in buildings. We focus on a household with photovoltaics and energy storage system. We analyze the efficiency of Markov chains, stride predictors and also their combination into a hybrid predictor in modelling the evolution of electricity production and consumption. All these methods anticipate electric power based on previous values. The main goal is to determine the best method and its optimal configuration which can be integrated into a (possibly hardware-based) intelligent energy management system. The role of such a system is to adjust and synchronize through prediction the electricity consumption and production in order to increase self-consumption, reducing thus the pressure over the power grid. The experiments performed on datasets collected from a real system show that the best evaluated predictor is the Markov chain configured with an electric power history of 100 values, a context of one electric power value and the interval size of 1.     

Continuous walking and time- and intensity-matched interval walking: Cardiometabolic demand and post-exercise enjoyment in insufficiently active,healthy adults

ABSTRACT

We compared cardiometabolic demand and post-exercise enjoyment between continuous walking (CW) and time- and intensity-matched interval walking (IW) in insufficiently active adults. Sixteen individuals (13 females and three males, age 25.3 ± 11.1 years) completed one CW and one IW session lasting 30 min in a randomised-counterbalanced design. For CW, participants walked at a mean intensity of 65–70% predicted maximum heart rate (HR_max). For IW, participants alternated between 3 min at 80% HR_max and 2 min at 50% HR_max. Expired gas was measured throughout each protocol. Participants rated post-exercise enjoyment following each protocol. Mean HR and V˙O₂ showed small positive differences in IW vs. CW (2, 95%CL 0, 4 beat.min^?1; d = 0.23, 95%CL 0.06, 0.41 and 1.4, 95%CL 1.2 ml.kg^?1.min^?1, d = 0.36, 95%CL 0.05, 0.65, respectively). There was a medium positive difference in overall kcal expenditure in IW vs. CW (25, 95%CL 7 kcal, d = 0.58, 95%CL 0.33, 0.82). Post-exercise enjoyment was moderately greater following IW vs. CW (9.1, 95%CL 1.4, 16.8 AU, d = 0.62, 95%CL 0.06, 0.90), with 75% of participants reporting IW as more enjoyable. Interval walking elicits meaningfully greater energy expenditure and is more enjoyable than CW in insufficiently active, healthy adults.