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A Heterogeneous Virtual Machines Resource Allocation Scheme in Slices Architecture of 5G Edge Datacenter

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Computers, Materials & Continua 2019年第7期61卷 423-437页

作者： Changming Zhao Tiejun Wang alan Yang College of Computer Science Sichuan UniversityChengdu610041China School of Computer Science Chengdu University of Information TechnologyChengdu610225China Amphenol AssembleTech HoustonTX 77070US

In the paper,we investigate the heterogeneous resource allocation scheme for virtual machines with slicing technology in the 5G/B5G edge computing *** general,the different slices for different task scenarios exist in the same edge layer synchronously.A lot of researches reveal that the virtual machines of different slices indicate strong heterogeneity with different reserved resource *** the condition,the allocation process is a NP hard problem and difficult for the actual demand of the tasks in the strongly heterogeneous *** on the slicing and container concept,we propose the resource allocation scheme named Two-Dimension allocation and correlation placement Scheme(TDACP).The scheme divides the resource allocation and management work into three stages in this paper:In the first stage,it designs reasonably strategy to allocate resources to different task slices according to *** the second stage,it establishes an equivalent relationship between the virtual machine reserved resource capacity and the Service-Level Agreement(SLA)of the virtual machine in different *** the third stage,it designs a placement optimization strategy to schedule the equivalent virtual machines in the physical ***,it is able to establish a virtual machine placement strategy with high resource utilization efficiency and low time *** simulation results indicate that the proposed scheme is able to suppress the problem of uneven resource allocation which is caused by the pure preemptive scheduling *** adjusts the number of equivalent virtual machines based on the SLA range of system parameter,and reduces the SLA probability of physical servers effectively based on resource utilization time sampling series *** scheme is able to guarantee resource allocation and management work orderly and efficiently in the edge datacenter slices.

关键词： Heterogeneous virtual machine resource allocation edge computing slicing

Magnesium: From fundamental research to future applications

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Journal of Magnesium and Alloys 2023年第12期11卷 4357-4358页

作者： alan A.Luo Jiashi Miao The Ohio State University ColumbusOH 43210USA

Magnesium(Mg), the lightest structural metal and the eighth most abundant element on the earth's crust, has traditionally been used as an “industrial metal” in transportation, electronics, aluminum alloying, steel desulfurization, and protective anodes;and recently shown significant potential to become a “technology metal” in a variety of new applications from energy storage/battery to biomedical products [1].

关键词： alloying steel battery

Precise Electro-thermal Power Loss Model of a Three-level ANPC Inverter with Hybrid Si/SiC Switches

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Chinese Journal of Electrical Engineering 2022年第3期8卷 76-89页

作者： Dereje Woldegiorgis H.alan Mantooth Department of Electrical Engineering University of ArkansasFayettevilleAR 72701USA

Hybrid Si/SiC switches constituting a parallel connection of a lower current rated SiC MOSFET and a higher current rated Si IGBT are becoming very attractive solution for designing high frequency and high-power density power electronic *** to the complementary nature of Si IGBT devices(smaller inverter cost and smaller conduction loss)and SiC devices(smaller switching loss and higher junction temperature capability),these novel switch device configurations enable a good tradeoff between cost and efficiency for high power converter *** such recent application of hybrid Si/SiC switches for efficiency-cost optimization is an Si/SiC hybrid switch based ANPC inverter proposed in Ref.[30].In Ref.[30]the topology structure,modulation strategy and the efficiency-cost benefits of the proposed ANPC inverter is *** this paper a precise electro-thermal power loss model for this ANPC inverter topology will be presented based on the modulation strategy of the inverter and the operating characteristics of the Si/SiC hybrid *** power loss model development takes into account how the current sharing between the two internal devices of the Si/SiC hybrid switches and their corresponding gate control method affects their power loss.A brief introduction to the topology structure and operation principle of the Si/SiC based ANPC inverter is first highlighted to provide context for readers and then a detailed description of the proposed electro-thermal power loss model is *** precision of the electro-thermal power loss model introduced in this paper is then validated using experimentally measured energy loss,device temperature and inverter efficiency data.

关键词： Cost reduction power loss model efficiency improvement ANPC inverter

Three-dimensional Morphometric Analyses of Hominoid Lower Molars from Yuanmou in Yunnan Province,China

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人类学学报 2002年第S1期21卷 1-13页

作者： alan Walker PennsylvaniaStateUniversity

Analysis of 3D measurements of 13 landmarks on 72 Yuanmou Hominoid lower molars and some comparative samples, using Euclidean Distance Matrix Analysis (EDMA), show that the 3D morphometric features of Yuanmou Homi noid lower molars largely resemble those of Lufengpithecus. Compared with extant great apes and humans, both Yuanmou Hominoid and Lufengpithecus differ markedly from humans, whereas they show much resemblance to apes. The two Chinese hominoids and extant great apes are different from humans in many of the same ways. Moreover, 3D morphometric features of Yuanmou Hominoid lower molars differ from those of each of the three extant great apes in similar ways. Of the three, the orangutan is the closest match to Yuanmou Hominoid in tooth morphology. However, the exact implications of these similarities and differences remain to be determined.

关键词： Yuanmou Hominoid Lufengpithecus Morphometrics 3D analysis EDMA

Probabilistic estimate of rock mass static and dynamic demands for underground excavation stabilisation

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Journal of Rock Mechanics and Geotechnical Engineering 2019年第3期11卷 481-493页

作者： Ernesto Villaescusa alan Thompson Christopher Windsor Western Australia School of Mines Curtin UniversityLocked Bag 30KalgoorlieWA 6433Australia alan Thompson Geotechnology Pty Ltd. 40B Windich StreetEsperanceWA 6450Australia

Excavation damage under high in situ stress depends largely upon the potential block size associated with any violent *** size and shape of the dynamic instability are largely controlled by the location,orientation and extent of the pre-existing geological discontinuities.A new methodology is presented in which the rock mass demand can be expressed in terms of the mass in tonnes of unstable rock that is ejected per unit area of the excavation surface where failure occurs.A probabilistic approach has been implemented to estimate the potential rock mass instabilities and their associated static and dynamic *** new methodology considers that the strain energy released by the rock mass during violent stress-driven failure is largely converted into kinetic energy of ejection for *** estimated dynamic demand has been favourably compared with observations of rock mass damage in a number of underground excavations.

关键词： Geological structures Probabilistic design Underground excavations High stresses Dynamic and static demands Deep mining

云南边疆民族地区体育旅游资源开发的问题与思考

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凯里学院学报 2024年第2期42卷 37-42页

作者：王玉光邓阿岚云南师范大学云南昆明650500

云南省地处中国西南边疆,是世界上少有的多民族群体、多文化形态共生带,体育旅游资源具有鲜明的民族性、地域性、多样性和群体性。其基本特性与体育旅游的“具身性”本质相吻合,富有旅游开发价值。但是,在实际开发中仍存在整体开发不够... 详细信息

云南省地处中国西南边疆,是世界上少有的多民族群体、多文化形态共生带,体育旅游资源具有鲜明的民族性、地域性、多样性和群体性。其基本特性与体育旅游的“具身性”本质相吻合,富有旅游开发价值。但是,在实际开发中仍存在整体开发不够充分、与已成形资源匹配不佳、产品缺乏文化内涵和市场引导不足等问题。需要立足边疆民族体育文化特性进行深度开发,不断提升边疆民族体育旅游产品文化附加值,形成具有持久生命力、竞争力的体育旅游品牌。

关键词：云南边疆民族地区体育旅游资源具身性浅表化整体开发

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Comment on the paper “An analysis of Chinese Super League partial results”, by David R Brillinger

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Science China Mathematics 2009年第6期52卷 1152-1154页

作者： LEE alan Department of Statistics University of Auckland Private Bag 920719 Auckland 1142 New Zealand

This paper gives a nice analysis of an interesting data set, and develops a method that can be applied to a variety of round-robin sports competitions. The paper models the result of a

关键词： Comment on the paper by David R Brillinger An analysis of Chinese Super League partial results

New Developments in Plant Conservation and the Relevance of Ethnobotany

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植物分类与资源学报 2013年第4期35卷 424-430页

作者： alan Hamilton kunming Institute of Botany Chinese Academy of Sciences

There is only one cover of plants on Earth,so all plant-related aspects of conservation should be consid- ered in deciding how the land and the plants on it should be managed for conservation purposes. A three-fold classification of the benefits to be derived from ecosystem-based plant conservation ( EBPC) is suggested: conservation of plant species,the sustainable use of plant resources and the delivery of ecosystem services. EBPC is a place-centred approach which,in principle,can be pursued anywhere. Ethnobotanical research can help reveal realities about relationships between local people and plants,thus providing information useful for advancing plant conservation. Applied ethnobotany involves ethnobotanists working in a participatory way with local people,both parties contributing to the identification and resolution of conservation issues relating to plants. This type of research helps ensure that priority issues from the local perspective are addressed,thus making it more likely that local people will be committed to implementing solutions found. Both knowledge and values associated with local communities,and knowledge and methodologies associated with science are brought together in the conservation cause.

关键词：植物学植物分类植物演化植物生理学生物因素

Re-evaluation of the phylogenetic position of the genus Dexiotrichides (Protozoa, Ciliophora, Scuticociliatida) inferred from stomatogenetic and molecular information for Dexiotrichides pangi

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Progress in Natural Science:Materials International 2005年第8期15卷 700-707页

作者： alan WARREN,David ROBERTS,Norbert WILBERT London SW7 5BD Uk Zoologisches Institut Universitt Bonn 53115 Bonn Germany Department of Zoology Natural History of Museum Cromwell Road London SW7 5BD Uk Department of Zoology Natural History of Museum Cromwell Road

The divisional process and systematic position of the marine scuticociliate Dexiotrichides pangi are studied. Based on both stomatogenetic data and 18S rDNA gene sequences, the phylogeny and morphogenetic characteristics of this taxon, and of other related genera, are analyzed and discussed. Both the divisionary events and the molecular biological data indicate that this species/genus, together with certain other genera in the Dexiotricha-complex, occupies an intermediate position between the tetrahymenids and the “typical” scuticociliate, which suggests that the Dexiotricha-like taxa should be excluded from the “true” scuticociliates. As a further contribution, the process of stomatogenesis in D. pangi can be summarized as follows: (1) The oral primordia in the opisthe are formed only by the proliferation of basal bodies in the scutica field, which subsequently develop into three membranelles, while the new paroral membrane seems to be generated by the sub-anterior portion of somatic kinety 1 (the 1st postoral intercalary kinety). The latter character exhibits a mode similar to Tetrahymena. (2) In the proter the parental membranelles are retained and remain unchanged throughout the entire division process; only the old paroral membrane is disassembled and differentiated into the anlage, which then gives rise to the new paroral membrane and the scutica of the proter. The 18S rRNA gene sequence reported here is the first one for a ciliate in the Dexiotricha-complex.

关键词： marine ciliate systematic position stomatogenesis 18S rRNA gene sequences Dexiotrichides pangi.