检索结果-南通市图书馆

Spatio-temporal Reallocation Method for Energy Management in Edge Data Centers

在线全文

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2024年第5期10卷 1901-1910页

作者： junlong li Chenghong Gu Lurui Fang Xiangyu Wei Yuanbin Zhu Yue Xiang University of Bath Bath BA27AYUK Department of Electrical and Electronic Engineering Xi’an Jiaotong-Liverpool UniversitySuzhou 215123China College of Electrical Engineering Sichuan UniversityChengdu 610065China

Edge data centers(EDCs)have been widely developed recently to supply delay-sensitive computing services,which impose prohibitively increasing electricity costs for EDC *** paper presents a new spatiotemporal reallocation(STR)method for energy management in *** method uses spare resources,including servers and energy storage systems(ESSs)within EDCs to reduce energy costs based on both spatial and temporal features of spare *** solution:1)reallocates flexible workload between EDCs within one cluster;and 2)coordinates the electricity load of data processing,ESSs and distributed energy resources(DERs)within one EDC cluster to gain benefits from flexible electricity *** addition,this paper for the first time develops a Bit-Watt transformation to simplify the STR method and represent the relationship between data workload and electricity consumption of *** studies justifying the developed STR method delivers satisfying cost reductions with *** STR method fully utilized both spatial and temporal features of spare resources in EDCs to gain benefits from 1)varying electricity tariffs,and 2)maximumly consuming DER generation.

关键词： Edge data centers electricity costs reduction power control power market workload migration

Non-destructive electroluminescence inspection for LED epitaxial wafers based on soft single-contact operation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2024年第8期12卷 1776-1784页

作者： HAO SU JIAWEN QIU junlong li RONG CHEN JIANBI LE XIAOYANG LEI YONGAI ZHANG XIONGTU ZHOU TAIliANG GUO CHAOXING WU School of Physics and Information Engineering Fuzhou UniversityFuzhou 350000China Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China Fujian Inspection and Research Institute for Product Quality Fuzhou 350002China

Non-destructive and accurate inspection of gallium nitride light-emitting diode(Ga N-LED)epitaxial wafers is important to Ga N-LED ***,the conventional electroluminescence inspection,the photoluminescence inspection,and the automated optical inspection cannot fulfill the complex technical *** this work,an inspection method and an operation system based on soft single-contact operation,namely,single-contact electroluminescence(SC-EL)inspection,are *** key component of the SC-EL inspection system is a soft conductive probe with an optical fiber inside,and an AC voltage(70Vpp,100 k Hz)is applied between the probe and the ITO electrode under the LED epitaxial *** proposed SC-EL inspection can measure both the electrical and optical parameters of the LED epitaxial wafer at the same time,while not causing mechanical damage to the LED epitaxial ***,it is demonstrated that the SC-EL inspection has a higher electroluminescence wavelength accuracy than photoluminescence *** results show that the non-uniformity of SC-EL inspection is 444.64%,which is much lower than that of photoluminescence *** addition,the obtained electrical parameters from SC-EL can reflect the reverse leakage current(Is)level of the LED epitaxial *** proposed SC-EL inspection can ensure high inspection accuracy without causing damage to the LED epitaxial wafer,which holds promising application in LED technology.

关键词： electroluminescence operation epitaxial

转移支付的“钱随人走”:行动逻辑、典型经验与推进路径

在线全文

学校读者我要写书评

暂无评论

经济纵横 2024年第9期 120-128页

作者：樊轶侠李俊龙李帆中国财政科学研究院北京100142 中国发展研究基金会北京100010

转移支付制度为国家公共服务体系提供财力支撑,必须适时转变财政资源供给思维,从而有效应对人口大规模快速流动给政府公共服务带来的现实挑战。我国现行转移支付制度难以满足流动人口诸多基本公共服务需求,在激励机制和方法工具等方面... 详细信息

转移支付制度为国家公共服务体系提供财力支撑,必须适时转变财政资源供给思维,从而有效应对人口大规模快速流动给政府公共服务带来的现实挑战。我国现行转移支付制度难以满足流动人口诸多基本公共服务需求,在激励机制和方法工具等方面存在不足。因此,本文提出建立“钱随人走”转移支付模式,在精准挂钩流动人口、全面覆盖流动人口需求的基础上,动态优化转移支付资金分配机制。“钱随人走”的核心在于转移支付标准从过去的静态地域存量需求转变为动态人口流量需求,即“流量思维”,使资金拨付能跟随居民身份场景的变化而不断延伸,确保财政资源准确、及时地安排到基本公共服务项目中。借鉴国内外的典型经验,要将“钱随人走”理念深深注入转移支付制度、加强基本公共服务支出体系标准化建设、改进绩效激励约束机制,实现财政资源供给的动态化、标准化,为进一步发挥财政治理效能和推进以人为核心的新型城镇化提供支撑。

关键词：转移支付制度 “钱随人走” 人口大规模流动

在线全文

学校读者我要写书评

暂无评论

发酵型枸杞酒关键香气物质分析

食品科学 2024年第5期45卷 126-136页

作者：刘雅冉李俊龙谷佩珊李若彤朱保庆张柏林北京林业大学生物科学与技术学院食品科学系林业食品加工与安全北京市重点实验室北京100083 北京电子科技职业学院生物工程学院北京100176

利用液液萃取-溶剂辅助蒸发-气相色谱-质谱嗅闻法结合气相色谱-四极杆质谱和气相色谱静电场轨道阱质谱解析枸杞酒中的挥发性香气组分,并结合香气重构和感官定量描述性分析鉴定枸杞酒中的关键呈香组分。结果表明,枸杞酒关键呈香组分主要... 详细信息

利用液液萃取-溶剂辅助蒸发-气相色谱-质谱嗅闻法结合气相色谱-四极杆质谱和气相色谱静电场轨道阱质谱解析枸杞酒中的挥发性香气组分,并结合香气重构和感官定量描述性分析鉴定枸杞酒中的关键呈香组分。结果表明,枸杞酒关键呈香组分主要由乙酯类化合物、其他酯类、C_(13)-降异戊二烯类、挥发性酚类、醇类和其他类化合物组成。其中,乙酯类化合物包括肉桂酸乙酯、乙酸乙酯、2-甲基丙酸乙酯、2-甲基丁酸乙酯、3-甲基丁酸乙酯、己酸乙酯、乳酸乙酯、辛酸乙酯、癸酸乙酯,其他酯类包括乙酸异戊酯、乳酸异戊酯,C_(13)-降异戊二烯类包括β-大马士酮和β-紫罗兰酮,挥发性酚类包括4-乙基愈创木酚、丁香酚、2,4-二叔丁基苯酚,醇类包括1-辛烯-3-醇、苯甲醇、苯乙醇和异戊醇,其他类包括萘、甲硫基丙醇、辛酸和2-乙酰吡咯。本研究的开展明晰了枸杞酒的关键呈香组分和感官特性,有助于丰富改善枸杞酒香气的基础理论,为枸杞酒产品增香提质提供依据。

关键词：枸杞酒香气物质气相色谱-静电场轨道阱质谱气相色谱-质谱嗅闻香气重构

在线全文

学校读者我要写书评

暂无评论

铲运机工作转向液压系统原理分析及故障处理

模具制造 2024年第7期24卷 249-251页

作者：李俊龙贵州省开阳县金中镇开磷有限责任公司采掘保运部贵州开阳550300

铲运机是我国矿业开展中非常重要的运载机械设备,其具有较强的可靠性、稳定性和高效性,有效地保证了矿业开采的高效进行。液压系统是铲运机的“血液”,是控制铲运机完成一系列工作过程的基础。以TORO400E铲运机为例,对铲运机转向液压系... 详细信息

铲运机是我国矿业开展中非常重要的运载机械设备,其具有较强的可靠性、稳定性和高效性,有效地保证了矿业开采的高效进行。液压系统是铲运机的“血液”,是控制铲运机完成一系列工作过程的基础。以TORO400E铲运机为例,对铲运机转向液压系统的工作原理进行分析,并对铲运机转向液压系统常见故障和处理措施进行说明。

关键词：铲运机转向液压系统工作原理故障分析

Formation control for networked multiagent systems with a minimum energy constraint

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2023年第1期36卷 342-355页

作者： junlong li Jianxiang XI Ming HE Bing li Department of Physics Lüliang UniversityLüliang 033001China School of Missile Engineering Rocket Force University of EngineeringXi’an 710025China First Military Representative Office of the Rocket Army Equipment Department in Xi’an Xi’an 710025China

Minimum-energy formation achievement problems for networked multiagent systems are investigated,where information networks with leaderless and leader-follower structures are respectively addressed and information networks are randomly *** critical feature of this work is that the energy constraint is minimum in the sense of the linear matrix inequality,but limited-budget control and guaranteed-cost control cannot realize a minimum-energy ***,the leaderless minimum-energy formation control problem is converted into an asymp-totic stability one via a nonsingular transformation and state space decomposition,and based on linear matrix inequality techniques,sufficient conditions for analysis and design of leaderless minimum-energy formation achievement are proposed,respectively,which can be solved by the generalized eigenvalue ***,main results of minimum-energy formation achievement of leaderless networked multiagent systems are extended leader-follower networked multiagent systems,where the asymmetric property of the leader-follower information network is well dealt with by two nonsingular ***,two simulation examples are shown to verify the main results for minimum-energy formation achievements of leaderless and leader-follower networked multiagent systems,respectively.

关键词： Energy constraint Formation Minimum energy consump-tion Networked control systems Switching networks

Edge-cloud Computing Systems for Smart Grid: State-of-the-art, Architecture, and Applications

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Power Systems and Clean Energy 2022年第4期10卷 805-817页

作者： junlong li Chenghong Gu Yue Xiang Furong li Department of Electronic and Electrical Engineering University of BathBathUK College of Electrical Engineering Sichuan UniversityChengduChina

The quantity and heterogeneity of intelligent energy generation and consumption terminals in the smart grid are increasing drastically over the *** edge devices have created significant pressures on cloud computing(CC)system and centralised control for data storage and processing in realtime operation and *** integration of edge computing(EC)can effectively alleviate the pressure and conduct real-time processing while ensuring data *** paper conducts an extensive review of the EC-CC computing system and its application to the smart grid,which will integrate a vast number of dispersed *** first comprehensively describes the relationship among CC,fog computing(FC),and EC to provide a theoretical basis for the *** then introduces the architecture of the EC-CC computing system in the smart grid,where the architecture consists of both hardware structure and software platforms,and key technologies are introduced to support ***,the application to the smart grid is discussed across the whole supply chain,including energy generation,transportation(transmission and distribution networks),and ***,future research opportunities and challenges of EC-CC while being applied to the smart grid are *** paper can inform future research and industrial exploitations of these new technologies to enable a highly efficient smart grid under decarbonisation,digitalisation,and decentralisation transitions.

关键词： Smart grid edge computing fog computing cloud computing Internet of Things data fusion container technology

HPV阳性口咽癌低剂量与标准剂量放疗疗效比较的meta分析

在线全文

学校读者我要写书评

暂无评论

中华放射肿瘤学杂志 2024年第7期33卷 599-605页

作者：郝杰文温树信张丽王晨车顺途李俊隆罗梅方山西医科大学第三医院(山西白求恩医院、山西医学科学院、同济山西医院)耳鼻咽喉头颈外科太原030032 中国医学科学院肿瘤医院山西医院(山西医科大学附属肿瘤医院)头颈外科太原030001

目的比较低剂量放疗(LD-RT)与标准剂量放疗(SD-RT)治疗人乳头瘤病毒(HPV)阳性口咽癌患者的疗效及安全性。方法检索PubMed、Web of Science、Cochrane library、EMbase、中国生物医学文献数据库、中国知网、维普、万方数据库中,2000年1月... 详细信息

目的比较低剂量放疗(LD-RT)与标准剂量放疗(SD-RT)治疗人乳头瘤病毒(HPV)阳性口咽癌患者的疗效及安全性。方法检索PubMed、Web of Science、Cochrane library、EMbase、中国生物医学文献数据库、中国知网、维普、万方数据库中,2000年1月1日至2023年2月9日期间,所有对比研究低剂量与标准剂量放疗治疗HPV阳性口咽癌的文献。按照纳入与排除标准进行严格的筛选,提取资料,采用RevMan 5.4软件进行meta分析。结果最终纳入8篇文献,汇总结果表明LD-RT组患者的总生存(OS)期和无进展生存(PFS)期与SD-RT组基本一致(HR=0.83,95%CI为0.59~1.18,P=0.31;HR=0.97,95%CI为0.53~1.78,P=0.92),但经皮内镜胃造瘘管(PEG)置管率显著降低(RR=0.45,95%CI为0.28~0.72,P=0.001)。结论LD-RT可使HPV阳性口咽癌患者获得与SD-RT相当的疗效和更低的PEG置管率。

关键词：口咽肿瘤人乳头瘤病毒放射疗法低剂量 Meta分析

Output formation tracking for networked systems with limited energy and aperiodic silence

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2022年第7期35卷 274-288页

作者： Jin JIN junlong li Donghao QIN Ning CAI School of Electrical Engineering Northwest Minzu UniversityLanzhou 730030China Key Laboratory of China’s Ethnic Languages and Information Technology for Ministry of Education Northwest Minzu UniversityLanzhou 730000China School of Missile Engineering Rocket Force University of EngineeringXi’an 710025China School of Artificial Intelligent Beijing University of Posts and TelecommunicationsBeijing 100876China

For leader-following networked systems with the topology switching and the aperiodic silence,limited-energy output formation tracking problems are ***,a new output formation tracking control protocol is proposed,which contains two components associated with the communication interactions between the leader and tracking intelligent agents and the communication interactions among tracking intelligent agents,respectively,and the aperiodic silence,the topology switching and the energy constraint index is introduced ***,a two-step transformation method is presented to separate the whole dynamics of a networked system into the relative dynamics between the leader and tracking intelligent agents and the dynamics of the leader,and sufficient conditions for limited-energy output formation tracking for networked systems with limited energy and aperiodic silence are presented,which are extended into networked systems without the aperiodic ***,a partition checking algorithm is presented to check limitedenergy output formation tracking design ***,a numerical example is illustrated to demonstrate the validness of theoretical results.

关键词： Energy calculations Formation Intermittent working Networked control system Tracking