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Energy-efficient Virtual Machine Allocation Technique Using Flower Pollination Algorithm in Cloud Datacenter:A Panacea to Green Computing

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Journal of Bionic Engineering 2019年第2期16卷 354-366页

作者： Mohammed Joda Usman Abdul Samad Ismail Hassan Chizari Gaddafi Abdul-Salaam Ali Muhammad Usman Abdulsalam Yau Gital Omprakash Kaiwartya Ahmed Aliyu Department of Maths Bauchi State University GadauBauchi 81007Nigeria Department of Computer Science Universiti Teknology MalaysiaSkudai Johor 81310Malaysia School of Computing and Technology Park CampusUniversity of Gloucestershire Cheltenham GL50 4SHUK Department of Computer Science Kwame Nkrumah University of Science and TechnologyKumasi 00233Ghana Department of Maths and Computer Federal College of Education Technical GombeGombe 072158Nigeria Department of Maths Abubakar Tafawa Balewa University BauchiBauchi 81027Nigeria Department of Computer and Information Technology Northumbria UniversityNewcastle NE1SSTUK

Cloud computing has attracted significant interest due to the increasing service demands from organizations offloading computationally intensive tasks to ***,datacenter infrastructure comprises hardware resources that consume high amount of energy and give out carbon emissions at hazardous *** cloud datacenter,Virtual Machines(VMs)need to be allocated on various Physical Machines(PMs)in order to minimize resource wastage and increase energy *** allocation problem is *** finding an exact solution is complicated especially for large-scale *** this con text,this paper proposes an Energy-oriented Flower Pollination Algorithm(E-FPA)for VM allocation in cloud datacenter environments.A system framework for the scheme was developed to enable energy-oriented allocation of various VMs on a *** allocation uses a strategy called Dynamic Switching Probability(DSP).The framework finds a near optimal solution quickly and balances the exploration of the global search and exploitation of the local *** considers a processor,storage,and memory constraints of a PM while prioritizing energy-oriented allocation for a set of *** performed on MultiRecCloudSim utilizing planet workload show that the E-FPA outperforms the Genetic Algorithm for Power-Aware(GAPA)by 21.8%,Order of Exchange Migration(OEM)ant colony system by 21.5%,and First Fit Decreasing(FFD)by 24.9%.Therefore,E-FPA significantly improves datacenter performance and thus,enhances environmental sustainability.

关键词： virtualization green computing cloud datacenter energy optimization

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Effects of Relay Cropping of Corn on the Productivity and Quality of Flue-Cured Tobacco

Effects of Relay Cropping of Corn on the Productivity and Qu...

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作者： Guisu Zhou Xinhua Yin Yongmei Li Huanwen Yang Zhengxiong Zhao Peikuan Che Qizhang Cao Hong Zhao YongJie Wang Lei Xu College of Tobacco Science Yunnan Agricultural Univ. Dep. of Plant Sciences The Univ. of Tennessee College of resources and Environment Yunnan Agricultural Univ. Jianchuan Branch of Dali Tobacco Company

Relay cropping timing has been frequently reported to influence flue-cured tobacco(Nicotiana tabacum L.) production. However, the optimal planting time for a relay corn(Zea mays L.) crop on flue-cured tobacco fields is unknown in terms of tobacco health, yield, quality, and economic value. A field experiment was conducted with 10, 17, 24, and 31 d after flue-cured tobacco apex excision as the relay cropping timings of corn, and tobacco monoculture as the control at Chuxiong, Yunnan, China in 2010 and 2011. The five treatments were repeated three times in a randomized complete block design. The occurrence of brown spot(Alternaria alternata), plant biomass, plant N and K nutrition, yield, chemical composition, smoking quality, and economic value of flue-cured tobacco were affected by year. Relay cropping 17 d after tobacco apex excision resulted in better chemical composition and smoking quality. The incidence and severity index of brown spot, plant biomass, plant N and K nutrition, yield, chemical composition, smoking quality, and economic value of tobacco were not significantly affected by the relay cropping timing of corn, indicating that relay cropping of corn at a later growth stage of flue-cured tobacco has no negative effect on tobacco production while the relay corn crop may bring additional income to tobacco growers. In conclusion, if the production of relay corn is profitable, relay cropping of corn after flue-cured tobacco apex excision could become a recommended cropping system in Yunnan and other regions with similar environmental conditions.

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Overview of Theory and Model of Tropical Agricultural Circular Economy in Hainan Province

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Asian Agricultural Research 2011年第5期3卷 119-122页

作者： YU Hua-mei1,2,GE Cheng-jun3 1.College of Economics and Management,Hainan University,Haikou 570208,China 2.School of Chemical and environmental Engineering,China University of Mining and Technology,Beijing 100083,China 3.College of Environment and Plant Protection,Hainan University,Haikou 570208,China College of Economics and Management Hainan University School of Chemical and environmental Engineering China University of Mining and Technology College of Environment and Plant Protection Hainan University

This paper gives a general overview of rationale of tropical agricultural circular *** the basis of ecological economic theory,circular economy is a new model of economic development which aims at realizing reducing of resources use,reuse of products and recycling of wastes,conforming to the principle of *** is to make economic system melt into the process of cycle of material of natural ecological system *** paper introduces the advantages of developing tropical agriculture in Hainan Province,the main problems existing in the development and two main models of sustainable tropical agricultural development in Hainan Province at present.9 typical models of tropical agricultural circular economy in Hainan Province are listed in particular,including compound ecological project of forestry and animal husbandry,three-dimensional planting model of plantation,multilayered structure of eucalyptuses,sustainable agricultural model of sightseeing,the model of using animal manure,precision tropical agricultural model,clean production model of tropical agriculture,deep processing model of tropical agricultural products,and the model of ecological agricultural *** countermeasures and suggestions are put forward to promote development of tropical agricultural circular economy in Hainan Province as follows:take actions that suit local circumstances,exert advantage and exploit potential;give full play to advantage of integration of production,teaching and research,and promote agriculture by applying scientific and technological advances;the whole staff participate and strengthen construction of soft environment and hard environment.

关键词： Circular economy Tropical agriculture Sustainable

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基于水经济价值的长江口环境流量探讨

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自然资源学报 2018年第3期33卷 467-477页

作者：唐瑜宋献方 Bauer-Gottwein Peter 卜红梅杨丽虎张应华韩冬梅马英 Davidsen Claus 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室北京100101 中国科学院大学中丹学院北京100049 中国科学院大学资源与环境学院北京100190 Department of environmental Engineering Technical University of Denmark2800 Kgs.LyngbyDenmark

适宜的环境流量对于维持河口生态系统稳定以及保障区域社会经济用水需求有着重要意义。论文以探讨水资源优化配置条件下长江口适宜环境流量为目的,基于水经济价值分析构建了长江中下游水资源优化配置模型,分析了区域缺水量以及环境流量... 详细信息

适宜的环境流量对于维持河口生态系统稳定以及保障区域社会经济用水需求有着重要意义。论文以探讨水资源优化配置条件下长江口适宜环境流量为目的,基于水经济价值分析构建了长江中下游水资源优化配置模型,分析了区域缺水量以及环境流量约束的影子成本随长江口环境流量约束的变化。结果表明:当环境流量约束超过临界值后,区域缺水量不断增加,且环境流量约束产生非零影子成本;通过区域供水目标和环境流量约束的影子成本图确定长江口适宜环境流量的上限和下限,得到20%、50%、75%及95%水资源保证率下,长江口适宜环境流量分别为27.10×10~9~29.65×10~9、25.50×10~9~27.12×10~9、23.08×10~9~24.62×10~9及17.72×10~9~19.65×10~9m^3/月;该环境流量标准可以满足一定目标下长江口的生态需求。

关键词：环境流量水资源配置水经济价值影子成本长江口

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The contribution of the European Society for Soil Conservation (ESSC) to scientific knowledge, education and sustainability

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International Soil and Water Conservation Research 2019年第1期7卷 102-107页

作者： Carmelo Dazzi Wim Comelis Edoardo A.C.Costantini Mihail Dumitru Michael A.Fullen Donald Gabriels Raimonds Kasparinskis Adam Kertész Giuseppe Lo Papa Guenola Pérès Jane Rickson JoséL.Rubio Thomas Sholten Sid Theocharopoulos Ivan Vasenev Department of Agricultural Food and Forest SciencesUniversity of PalermoItaly Department of Environment University of GhentBelgium CREA-AA Research Centre for Agriculture and Environment Firenze/FlorenceItaly Institute for Soil Science Agrochemistry&Environment Protection ICPA BucharestRomania Faculty of Science and Engineering The University of WolverhamptonWV1 1LYUK UNESCO Chair on Eremology Faculty of Biosciences EngineeringGhent UniversityBelgium University of Latvia Faculty of Geography and Earth SciencesRigaLatvia Geographical Institute Research Centre for Astronomy and Earth SciencesHungarian Academy of SciencesBudapestHungary UMR SAS INRA Agrocampus 65 rue de Saint BrieucRennesFrance Cranfield Soil and AgriFood Institute Cranfield UniversityCranfieldUK IDE-CSIC Ctra Moncada-Naquera km 4.546113 MoncadaValenciaSpain Department of Geosciences Soil Science and GeomorphologyUniversity of TübingenGermany Hao-Demeter Institute of Soil and Water Resources14123 AthensGreece Ecology Department Russian State Agrarian UniversityTimiryazev Agricultural AcademyMoscowRussia

Soil is an integral component of the global environmental system which supports the quality and diversity of terrestrial life on ***,it is vital to consider the processes and impacts of soil degradation on society,especially on the provision of environmental goods and services,including food security and climate change mitigation and *** societies devoted to soil science play significant roles in reducing soil degradation and promoting soil conservation by advancing scientificknowledge,education and environmental *** ESSC was founded on 4 November 1988,with the aims to:*** research on soil degradation,soil protection and soil and water *** a network for the exchange of knowledge about soil degradation processes and soil conservation research and *** publications on major issues relating to soil degradation and soil and water *** regulators and policy-makers on soil issues,especially soil degradation,protection and *** societal challenges that can be addressed through better soil protection,advancing knowledge and scientific approaches to soil protection and sustainable management,mean the ESSC embraces the on-going development,application,review and constructive criticism of highly innovative scientific soil conservation methods,In this context,the ESSC analyses and publicizes the roles and functions of soil in natural and human-modified systems and the functional optimization of soils to ensure sustainable environmental protection.'The thin layer of soil that forms a patchy covering over the continents controls our awn existence and that of every other animal of the land' (Rachel Carson (1962) in'Silent Spring).

关键词： Soil degradation Soil education Soil functions Soil health Soil knowledge

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Research on Evaluation and Development of Industrial Heritage Tourism resources in Textile Valley

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Asian Agricultural Research 2021年第10期13卷 1-4页

作者： Xiaomei LIU Hui WANG Weijun ZHAO Xiaomeng JI School of Tourism Taishan UniversityTaian 271000China College of Physical education Taishan UniversityTaian 271000China Management College Ocean University of ChinaQingdao 266000China

This paper selects Qingdao Textile Valley as the research object,establishes the evaluation system of industrial heritage tourism resources,and analyzes the evaluation factors of industrial heritage tourism resources,such as resource element value,market location value,and environmental *** this paper puts forward some effective suggestions to promote the development of industrial heritage tourism in Textile *** results show that the measures put forward,such as fully tapping the value of resource elements,improving the surrounding traffic environment,perfecting tourism signs,perfecting local traffic routes,improving the complementarity of tourism resources,and expanding the tourist market,can scientifically and effectively protect urban industrial heritage,improve the development level of urban tourism,and speed up the transformation of new and old energy in Qingdao.

关键词： Textile Valley Industrial heritage tourism Resource evaluation

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植物功能性状对动态全球植被模型改进研究进展

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科学通报 2018年第25期63卷 2599-2611页

作者：杨延征王焓朱求安温仲明彭长辉林光辉清华大学地球系统科学系、地球系统数值模拟教育部重点实验室北京100084 全球变化与中国绿色发展协同创新中心北京100875 西北农林科技大学林学院生态预测与全球变化研究中心杨凌712100 中国科学院水利部水土保持研究所杨凌712100 Department of Biological Sciences Institute of Environmental SciencesUniversity of Quebec at MontrealMontreal H3C 3P8Canada 清华大学深圳研究生院海洋科学与技术学部深圳518055

动态全球植被模型(dynamic global vegetation models,DGVMs)在模拟和预测陆地生态系统对气候变化响应中表现出很大的不确定性,重要原因之一在于动态全球植被模型将定义植物功能型的性状值设置为常数,忽略了植物功能性状对环境变化的响... 详细信息

动态全球植被模型(dynamic global vegetation models,DGVMs)在模拟和预测陆地生态系统对气候变化响应中表现出很大的不确定性,重要原因之一在于动态全球植被模型将定义植物功能型的性状值设置为常数,忽略了植物功能性状对环境变化的响应.动态全球植被模型现有的植物功能型框架已经严重地阻碍了其发展,因此迫切需要一种新的方法来克服这种局限性.植物功能性状不仅可以反映植物对环境连续变化的响应,而且与生态系统的结构和功能密切相关,可提升当前动态全球植被模型对生态系统过程的模拟和功能的预测.本文从动态全球植被模型发展和植物功能型局限性入手,详细介绍了植物功能性状发展现状及其对动态全球植被模型改进的重要价值,归纳总结了植物功能性状对动态全球植被模型改进的主要方法,并指明植物功能性状对动态全球植被模型改进的发展方向.以期通过凝练植物功能性状在构建下一代动态全球植被模型中发挥作用,推动动态全球植被模型在我国的发展和应用.

关键词：动态全球植被模型(DGVMs) 植物功能型植物功能性状模型改进

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河口最大浑浊带研究的回顾与展望

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科学通报 2021年第18期66卷 2328-2342页

作者：王重洋周成虎陈水森 Yichun Xie 李丹杨骥周霞李勇王丹妮刘杨晓月广东省科学院广州地理研究所广东省地理空间信息技术与应用公共实验室广东省遥感与地理信息系统应用重点实验室广东省遥感大数据应用工程技术研究中心广州510070 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室北京100101 南方海洋科学与工程广东省实验室(广州) 广州511458 Institute for Geospatial Research&education Eastern Michigan UniversityYpsilantiMI 48197USA 中山大学新华学院资源与城乡规划系广州510520

最大浑浊带是河口近岸泥沙含量显著高于上下游,并在一定范围内有规律迁移的浑浊水体,是河流入海泥沙输移过程中的特有现象.它显著体现了河流、海洋及物质能量的耦合作用,其发展动态、研究进展备受关注.本文通过回顾国内外河口最大浑浊... 详细信息

最大浑浊带是河口近岸泥沙含量显著高于上下游,并在一定范围内有规律迁移的浑浊水体,是河流入海泥沙输移过程中的特有现象.它显著体现了河流、海洋及物质能量的耦合作用,其发展动态、研究进展备受关注.本文通过回顾国内外河口最大浑浊带80多年来的研究现状和历程,总结经验、展望未来.既有研究已对河口最大浑浊带的泥沙含量、物质来源及组成等基本特征进行了较为全面的总结,认识到不同类型河口最大浑浊带的形成发育存在不同的主导动力过程和主控影响因素;此外,河口最大浑浊带在中短尺度上的时空变化也得到了比较充分的分析和讨论.相关研究在多方面都取得了瞩目的成果和进展,具有重要的科学价值与现实意义.但是,分析认为仍亟待继续开展并进一步加强最大浑浊带的精准定量识别方法研究、空间立体分布整体特性研究,特别是人类活动加剧和全球自然环境显著变化影响下的长期时空动态特征研究,以促进对河口最大浑浊带现象及其时空演变规律和趋势更加全面、更加深刻的认识和理解,助力社会经济和自然环境健康可持续发展.

关键词：河口最大浑浊带形成机制时空变化

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