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A Resource Management Algorithm for Virtual Machine Migration in Vehicular Cloud Computing

Computers, Materials & Continua 2021年第5期67卷 2647-2663页

作者： Sohan Kumar Pande Sanjaya Kumar Panda Satyabrata Das Kshira Sagar Sahoo Ashish kr.Luhach N.Z.Jhanjhi Roobaea Alroobaea Sivakumar Sivanesan Veer Surendra Sai University of Technology Burla Burla768018India National Institute of Technology Warangal Warangal506004India VNR Vignana Jyothi Institute of Engineering and Technology Hyderabad500090India The Papua New Guinea University of Technology Lae-41PapuaNew Guinea School of Computer Science and Engineering Taylor’s UniversitySubang Jaya47500Malaysia Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia

In recent years,vehicular cloud computing(VCC)has gained vast attention for providing a variety of services by creating virtual machines(VMs).These VMs use the resources that are present in modern smart *** studies reported that some of these VMs hosted on the vehicles are overloaded,whereas others are *** a circumstance,the energy consumption of overloaded vehicles is drastically *** the other hand,underloaded vehicles are also drawing considerable energy in the underutilized ***,minimizing the energy consumption of the VMs that are hosted by both overloaded and underloaded is a challenging issue in the VCC *** proper and efcient utilization of the vehicle’s resources can reduce energy consumption *** of the solutions is to improve the resource utilization of underloaded vehicles by migrating the over-utilized VMs of overloaded *** the other hand,a large number of VM migrations can lead to wastage of energy and time,which ultimately degrades the performance of the *** paper addresses the issues mentioned above by introducing a resource management algorithm,called resource utilization-aware VM migration(RU-VMM)algorithm,to distribute the loads among the overloaded and underloaded vehicles,such that energy consumption is ***-VMM monitors the trend of resource utilization to select the source and destination vehicles within a predetermined threshold for the process of VM *** ensures that any vehicles’resource utilization should not exceed the threshold before or after the ***-VMM also tries to avoid unnecessary VM migrations between the ***-VMM is extensively simulated and tested using nine *** results are carried out using three performance metrics,namely number of nal source vehicles(nfsv),percentage of successful VM migrations(psvmm)and percentage of dropped VM migrations(pdvmm),and compared with threshold-based algorithm(i.e.,threshold)and

关键词： Resource management virtual machine migration vehicular cloud computing resource utilization source vehicle destination vehicle

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《底层表达》介绍

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当代语言学 2014年第4期16卷 494-497页

作者： Martin krmer 于辉南开大学汉语言文化学院

《底层表达》（Underlying Representations）是“音系学中的核心论题”系列丛书之一，2012年由剑桥大学出版社出版发行。该书作者Martinkraimer是挪威特罗姆瑟大学语言学系教授。作者带着大家一起回顾了过去近一百年“底层表达”在音... 详细信息

《底层表达》（Underlying Representations）是“音系学中的核心论题”系列丛书之一，2012年由剑桥大学出版社出版发行。该书作者Martinkraimer是挪威特罗姆瑟大学语言学系教授。作者带着大家一起回顾了过去近一百年“底层表达”在音系学领域的发展，对很多长期存在的音系问题做了思考，并对OT视角的底层表达提出了一些独特的修订意见。

关键词：剑桥大学出版社音系学系列丛书出版发行修订意见语言学作者论题

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SHRIMP zircon dating and LA-ICPMS Hf analysis of early Precambrian rocks from drill holes into the basement beneath the Central Hebei Basin,North China Craton

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Geoscience Frontiers 2014年第4期5卷 471-484页

作者： Yusheng Wan Xianzheng Zhao Zejiu Wang Dunyi Liu Alfred krner Chunyan Dong Hangqian Xie Yuansheng Geng Yuhai Zhang Runlong Fan Huiyi Sun Institute of Geology Chinese Academy of Geological Sciences Beijing SHRIMP Center Institute of GeologyChinese Academy of Geological Sciences State Key Laboratory for Continental Tectonics and Dynamics Institute of GeologyChinese Academy of Geological Sciences North China Oilfield Company of PetroChina Chinese Academy of Geological Sciences

The Central Hebei Basin （CHB） is one of the largest sedimentary basins in the North China Craton, extending in a northeast-southwest direction with an area of 〉350 km2. We carried out SHRIMP zircon dating, Hf-in-zircon isotopic analysis and a whole-rock geochemical study on igneous and metasedi- mentary rocks recovered from drill holes that penetrated into the basement of the CHB, Two samples of gneissic granodiorite （XG1-1） and gneissic quartz diorite 048-1） have magmatic ages of 2500 and 2496 Ma, respectively. Their zircons also record metamorphic ages of 2.41-2.51 and ～2.5 Ga, respec- tively. Compared with the gneissic granodiorite, the gneissic quartz diorite has higher REE contents and lower Eu/Eu＊ and （La/Yb）n values. Two metasedimentary samples （MG1, H5） mainly contain ～2,5 Ga detrital zircons as well as late Paleoproterozoic metamorphic grains. The zircons of different origins have eHf （2.5 Ga） values and Hf crustal model ages ranging from 0 to 5 and 2.7 to 2,9 Ga, respectively, Therefore, ～2.5 Ga magmatic and Paleoproterozoic metasedimentary rocks and late Neoarchean to early Paleoproterozoic and late Paleoproterozoic tectono-thermal events have been identified in the basement beneath the CHB. Based on regional comparisons, we conclude that the early Precambrian basement beneath the CHB is part of the North China Craton.

关键词： Early PrecambrianNorth China CratonDrill holeZircon datingHf isotopic analysis

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“我”移动互联网创业的未来

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作者： 36kr

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Stress and Strain Accumulation Due to a Long Dip-Slip Fault Movement in an Elastic-Layer over a Viscoelastic Half Space Model of the Lithosphere-Asthenosphere System

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International Journal of Geosciences 2013年第3期4卷 549-557页

作者： Sanjay Sen Subrata.kr. Debnath Department of Applied Mathematics University of Calcutta Kolkata India Department of Basic Science and Humanities Meghnad Saha Institute of Technology(A Unit of Techno India Group) Kolkata India

Most of the earthquake faults in North-East India, China, mid Atlantic-ridge, the Pacific seismic belt and Japan are found to be predominantly dip-slip in nature. In the present paper a dip-slip fault is taken situated in an elastic layer over a viscoelastic half space representing the lithosphere-asthenosphere system. A movement of the dip-slip nature across the fault occurs when the accumulated stress due to various tectonic reasons e.g. mantle convection etc., exceeds the local friction and cohesive forces across the fault. The movement is assumed to be slipping in nature, expressions for displacements, stresses and strains are obtained by solving associated boundary value problem with the help of integral transformation and Green’s function method and a suitable numerical methods is used for computation. A detailed study of these expressions may give some ideas about the nature of stress accumulation in the system, which in turn will be helpful in formulating an earthquake prediction programme.

关键词： Aseismic Period Dip-Slip Fault Earthquake Prediction Mantle Convection Plate Movements Stress Accumulation Tectonic Process Viscoelastic-Layered Model

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LDM (Layered Deployment Model): A Novel Framework to Deploy Sensors in an Irregular Terrain

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Wireless Sensor Network 2011年第6期3卷 189-197页

作者： Chandan kr. Bhattacharyya Swapan Bhattacharya 不详

Deployment of sensors in any irregular terrain with 100% coverage and connectivity is a challenging issue in the field of Wireless Sensor Networks. Traditional deployments often assume homogeneous environments, which ignore the effect of terrain profile as well as the in-network obstacles situated randomly like buildings, trees, roads and so on. Proper deployment of sensors in such irregular region and its corresponding routing is one of the most fundamental challenges of Wireless Sensor Networks. In this work, we have considered that the terrain is irregular in shape and there may be obstacles within the terrain in any random position with any random shape, which is the reality in real world. With this novel framework, we have shown that an opti-mum deployment can be achieved in such irregular terrain without compromising coverage as well as con-nectivity between the sensor nodes for effective routing.

关键词： Wireless Sensor Networks Sensor Deployment Shortest Path Routing Irregular Terrain

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A method for estimating vegetation change over time and space

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Journal of Geographical Sciences 2003年第4期13卷 447-454页

作者： Norbert kruchi WSL Swiss Federal Institute for ForestSnow and Landscape ResearchZurcherstrasse 111CH-8903 BirmensdorfSwitzerland

Plant diversity is used as an indicator of the well-being of vegetation and ecological systems. Human activities and global change drive vegetation change in composition and competition of species through plant invasions and replacement of existing species on a given scale. However, species diversity indices do not consider the effects of invasions on the diversity value and on the functions of ecosystems. On the other hand, the existing methods for diversity index can not be used directly for cross-scale evaluation of vegetation data. Therefore, we proposed a 3-dimensional model derived from the logistic equation for estimating vegetation change, using native and non-native plant diversity. The two variables, based on the current and the theoretical maximum diversity of native plants on a given scale, and the result of the model are relative values without units, and are therefore scale-independent. Hence, this method developed can be used directly for cross-scale evaluations of vegetation data, and indirectly for estimating ecosystem or environmental change.

关键词： biodiversity biological invasions ecosystem health global change land use

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Towards Safer and More Sustainable Ways for Exploiting Nuclear Power

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World Journal of Nuclear Science and Technology 2020年第3期10卷 91-115页

作者： Wolfgang krö ger Didier Sornette Ali Ayoub Department of Management Technology and Economics (D-MTEC) ETH Zurich Zurich Switzerland

Future electricity systems are challenged by deep decarbonization and concurrently increasing demand and there are growing concerns that renewables cannot shoulder this alone. Starting from the proven principle of diversity, we argue for keeping the nuclear option open or even for expanding its use. However, the perspectives are dim for the current technology as safety concerns and social aversion remain as fundamental problems. While looking for future revolutionary safe and more sustainable nuclear concepts we first review the main characteristics of civil nuclear energy, as well as its safety records and technical progress. We then list the key requirements for innovative nuclear systems designs which are less dependent on active safety systems and human performance as well as social stability. This allows us to provide a concept by concept comparison and assessment of existing and novel technologies and designs including different coolants and neutron spectra. The results indicate a high potential for far-reaching improvements compared to most advanced LWRs, although none of the candidate concepts meets all requirements convincingly, yet, helium cooled, small modular reactors (HTR-PM) come closest. We end by stressing the need for future research and development, and keeping human capital and know-how in nuclear energy;we call for an urgent increase in government and international RD&D funding by the order of a few hundreds of billions of USD per year, which will likely lead to breakthroughs that will restart productivity growth in severely affected stagnating modern economies.

关键词： Low-Carbon Energy Systems Sustainability Nuclear Safety Safety Requirements Advanced Reactor Concepts SMR RD&D Needs

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新型治疗剂在肿瘤中传递的生理屏障及其对策

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国外医学（肿瘤学分册） 1990年第4期17卷 218-221页

作者： Jain kr 董昱

杂交瘤技术和基因工程的出现,促进了许多有潜在价值的新型肿瘤治疗剂的发展。这些新型治疗剂包括:与效应子抗体、放射性核素、生物毒素、化学药物、细胞激活素、酶等偶联的单克隆抗体(McAb),生物反应调节因子(BRMs),细胞外基质多肽产物... 详细信息

杂交瘤技术和基因工程的出现,促进了许多有潜在价值的新型肿瘤治疗剂的发展。这些新型治疗剂包括:与效应子抗体、放射性核素、生物毒素、化学药物、细胞激活素、酶等偶联的单克隆抗体(McAb),生物反应调节因子(BRMs),细胞外基质多肽产物,免疫毒素及淋巴因子激活性杀伤细胞(LAK)等。尽管这些药剂治疗肿瘤的前景十分诱人,但其临床应用结果至今未达到预期效果。它们的有效性受一个关键因素的限制,即这些分子或细胞在肿瘤中的分布不充分、不均匀。单独用肿瘤细胞本身的因素(诸如肿瘤相关抗原的异质性。

关键词：治疗剂肿瘤传递生理屏障

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用蒙特卡罗哈密顿量方法研究非S态

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高能物理与核物理 2005年第7期29卷 717-720页

作者：黄纯青黎永耀罗向前 H.krger 中山大学物理系佛山科学技术学院光电子与物理学系佛山528000 华南农业大学应用物理系广州510642 Département de Physique Université Laval Québec PQ G1K 7P4 Canada

以氢原子为例,验证了MonteCarloHamiltonian(MCH)方法推广应用到量子力学系统中在原点发散的势的非S态的有效性,给出估计误差的新思路,得到和解析解相符的能谱和约化径向波函数.

关键词：哈密顿量蒙特卡罗量子力学系统径向波函数推广应用估计误差氢原子新思路发散原点约化能谱

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