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Research on the Ways for Companies to Gain Competitive Advantages in UK

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Research on the Ways for Companies to Gain Competitive Advan...

Challenges in Qualitative Accelerated Testing of WSN Hardware

作者： Guoliang Xu liquan chen School of Humanities and Management Guangdong Medical University

This paper mainly discusses the management of remuneration. In order to make the research easily understood, the paper was arranged as follows. Firstly, the paper analyses the union fracturing of collectivism and gives the reasons for the trend of remuneration from "collectivism" to "individualism". Secondly, the paper discusses the extent that a shift from "collectivism" to "individualism" in the management of remuneration. And then, the paper discusses how the shift influences the reward systems in the UK. Finally, the paper draws the conclusion according to the analysis.

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Engineering（科研） 2011年第12期3卷 1234-1239页

作者： Johanna Virkki liquan chen Yao Zhu Yuewei Meng 不详

Internet of Things (IOT) is a conceptual vision to connect things in order to create a ubiquitous computing world. In order to create such an ever-present network, a simple, reliable, and cost-effective technology is crucial. Wireless sensor network (WSN) is an important wireless technology that has wide variety of applications and provides unlimited future potentials for IOT. Since WSNs in IOT will be used in varying and challenging applications and environments, reliability and reliability testing of WSN hardware becomes extremely important. In accelerated reliability testing, test stresses are increased to cut down the time required to obtain a weakening effect similar to one resulting from normal service conditions in the field. This paper introduces three common difficulties that engineers may experience in qualitative accelerated testing of WSN devices: 1. Challenges in use of standard accelerated tests, 2. Challenges in component-level testing, and 3. Challenges in testing of prototypes. The paper will also introduce examples from real life reliability research and accelerated tests to clarify the presented challenges.

关键词： Accelerated Testing Internet of Things Reliability Wireless Sensor Network

ULTRASONIC STUDIES ON HIGH Tc SUPERCONDUCTOR YBa_(2)Cu_(3)O_(7-x)

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Chinese Physics Letters 1988年第10期5卷 461-464页

作者： DENG Tingzhang ZHANG Liangkun GU Huicheng XIAO Zhili chen liquan Institute of Physics Academia SinicaBeijing

Ultrasonic attenuation and velocity measurements down to 77K were performed on high Tc superconductor Y-Ba-Cu-O samples with different sintering *** change of sound velocity was found near Tc in two samples which have density of 94% of the theoretical density and excellent *** one of the samples an anomaly related to ultrasonic frequency was observed around Tc in the ultrasonic *** sample also possesses an excellent diamagnetism,but no anomaly in ultrasonic attenuation was found near *** did not observe anomaly in attenuation resulted from electron-phonon interaction in these two samples.

关键词： attenuation magnetism superconductor

MAC isolation to realize effective management in public wireless LAN

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Journal of Southeast University(English Edition) 2004年第2期20卷 157-161页

作者：陈立全胡爱群计文柯东南大学信息安全研究中心南京210096 Motorola全球软件集团南京210029

This paper describes how to use medium access control (MAC) isolation to enhance management performance in public wireless LAN (PWLAN). To comply with the IEEE 802.11 standards, a scheme to implement MAC isolation in WLAN access points by re-designing the Distribution_Service component of the MAC state machine is proposed. A variable named dotl 1 Isolation is defined to determine whether the MAC level communication between wireless stations in the same BSS is permitted or not. Finally, a design solution based on MPC860 hardware and embedded Linux software for PWLAN access point is specified. The simulation results of MAC isolation for PWLAN show that the proposed scheme is feasible and effective.

关键词： Codes (standards) Computer operating systems Computer simulation Network protocols Wireless telecommunication systems

A New Direct Anonymous Attestation Scheme for Trusted NFV System

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ZTE Communications 2018年第4期16卷 30-37页

作者： chen liquan ZHU Zheng WANG Yansong LU Hua chen Yang School of Information Science and Engineering Southeast University Nanjing R&D Center ZTE Corporation

How to build a secure architecture for network function virtualization(NFV)is an important *** computing has the ability to provide security for NFV and it is called trusted NFV *** this paper,we propose a new NFV direct anonymous attestation(NFV-DAA)scheme based on trusted NFV *** is based on the Elliptic curve cryptography and transfers the computation of variable D from the trusted platform module(TPM)to the *** the mutual authentication mechanism that those existing DAA schemes do not have and an efficient batch proof and verification scheme,the performance of trusted NFV system is *** proposed NFV-DAA scheme was proved to have a higher security level and higher efficiency than those existing DAA *** have reduced the computation load in Join protocol from 3G_1to 2G_1 exponential operation,while the time of NFV-DAA scheme's Sign protocol is reduced up to 49%.

关键词： NFV trusted computation DAA bilinear pairings

Efficient potential-tuning strategy through p-type doping for designing cathodes with ultrahigh energy density

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National Science Review 2020年第11期7卷 1768-1775页

作者： Zhiqiang Wang Da Wang Zheyi Zou Tao Song Dixing Ni Zhenzhu Li Xuecheng Shao Wanjian Yin Yanchao Wang Wenwei Luo Musheng Wu Maxim Avdeev Bo Xu Siqi Shi Chuying Ouyang liquan chen Department of Physics Laboratory for Computational Materials PhysicsJiangxi Normal University State Key Laboratory of Advanced Special Steel School of Materials Science and Engineering Shanghai University Soochow Institute for Energy and Materials Innovations (SIEMIS) College of PhysicsOptoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and TechnologySoochow University State Key Lab of Superhard Materials College of Physics Jilin University Australian Nuclear Science and Technology Organisation School of Chemistry University of Sydney Materials Genome Institute Shanghai University Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences

Designing new cathodes with high capacity and moderate potential is the key to breaking the energy density ceiling imposed by current intercalation chemistry on rechargeable batteries. The carbonaceous materials provide high capacities but their low potentials limit their application to anodes. Here, we show that Fermi level tuning by p-type doping can be an effective way of dramatically raising electrode potential. We demonstrate that Li（Na）BCF;/Li（Na）B;C;F;exhibit such change in Fermi level, enabling them to accommodate Li;（Na;） with capacities of 290–400（250–320） m Ah g;at potentials of 3.4–3.7（2.7–2.9） V, delivering ultrahigh energy densities of 1000–1500 Wh kg;. This work presents a new strategy in tuning electrode potential through electronic band structure engineering.

关键词： p-type doping strategy electrochemical potential tuning Li(Na)BCF2/B2C2F2 cathodes ultrahigh energy densities

Stable Ni-rich layered oxide cathode for sulfide-based all-solid-state lithium battery

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eScience 2022年第5期2卷 537-545页

作者： Yue Wang Zhixuan Wang Dengxu Wu Quanhai Niu Pushun Lu Tenghuan Ma Yibo Su liquan chen Hong Li Fan Wu Tianmu Lake Institute of Advanced Energy Storage Technologies Liyang213300JiangsuChina Yangtze River Delta Physics Research Center Liyang213300JiangsuChina Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou215123China Science and Technology Research Institute China Three Gorges Corporation Beijing China

Sulfide-based all-solid-state lithium-ion batteries(ASSLIBs)are one of the most promising energy storage technologies due to their high safety and ionic *** achieve greater energy density,a Ni-rich layered oxide LiNi_(x)Co_(y)M_(1-x-y)O_(2)(NCM,MMn/Al,x≥0.6)is desirable due to its relatively high voltage and large ***,interfacial side reactions between the NCM and sulfide solid electrolytes lead to undesirable interfacial passivation layers and low ionic conductivity,thereby degrading the electrochemical performance of NCM sulfide all-solid-state ***,a time-/cost-effective sulfidation strategy is exploited to sulfidize a Ni-rich NCM_(88) cathode in a mixed gas atmosphere of N_(2) and CS_(2).A new type of cathode(NCM88-S)with an ultrathin(∼2nm)surface layer is obtained,which significantly reduces the interfacial side reactions/resistance and improves the interfacial *** resulting NCM_(88)-S/Li_(6)PS_(5)Cl/Li_(4)Ti_(5)O_(12) ASSLIB exhibits superior performance,including a high discharge specific capacity(200.7 mAh g−1)close to that of liquid batteries,excellent cycling performance(a capacity retention of 87%after 500 cycles),and satisfactory rate performance(158.3 mAh g^(−1) at 1C).

关键词： Sulfide solid electrolytes Ni-rich oxide cathode All-solid-state batteries Surface modification Interface engineering

Localized-domains staging structure and evolution in lithiated graphite

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Carbon Energy 2023年第1期5卷 144-153页

作者： Suting Weng Siyuan Wu Zepeng Liu Gaojing Yang Xiaozhi Liu Xiao Zhang Chu Zhang Qiuyan Liu Yao Huang Yejing Li Mehmet NAteş Dong Su Lin Gu Hong Li liquan chen Ruijuan Xiao Zhaoxiang Wang Xuefeng Wang Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijingChina School of Physical Sciences University of Chinese Academy of SciencesBeijingChina College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijingChina Energy Storage Division TÜBİTAK Rail Transport Technologies InstituteTÜBİTAK Gebze CampusGebzeKocaeliTurkey Tianmu Lake Institute of Advanced Energy Storage Technologies Co. Ltd.LiyangJiangsuChina

Intercalation provides to the host materials a means for controlled variation of many physical/chemical properties and dominates the reactions in metal‐ion *** particular interest is the graphite intercalation compounds with intriguing staging structures,which however are still unclear,especially in their nanostructure and dynamic transition ***,the nature of the staging structure and evolution of the lithium(Li)‐intercalated graphite was revealed by cryogenic‐transmission electron microscopy and other methods at the *** intercalated Li‐ions distribute unevenly,generating local stress and dislocations in the graphitic *** staging compound is found macroscopically ordered but microscopically inhomogeneous,exhibiting a localized‐domains structural *** findings uncover the correlation between the long‐range ordered structure and short‐range domains,refresh the insights on the staging structure and transition of Li‐intercalated/deintercalated graphite,and provide effective ways to enhance the reaction kinetic in rechargeable batteries by defect engineering.

关键词： cryogenic-transmission electron microscopy(cryo-TEM) graphite intercalation compounds lithiated graphite localized-domains structural model staging structures

Influences of the tank liquid lateral sloshing and mass time-varying on high clearance self-propelled sprayer ride comfort

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 12-22页

作者： liquan Lu Junchang Zhang Cui Cui Jun chen Yu chen Hongling Jing Shuo Zhang Sugirbay Adilet chenwei Hu Jiayu Cao College of Mechanical and Electronic Engineering Northwest A&F UniversityYangling 712100ShaanxiChina Weifang Engineering Vocational College Weifang 261000ShandongChina Technical Faculty S.Seifullin Kazakh Agro Technical UniversityAstana 101400Kazakhstan

To explore the influence of the lateral sloshing and the time-varying mass of the liquid in the tank on the ride comfort of the high-clearance sprayer,a spring-mass-damping equivalent mechanics that can describe the lateral sloshing of the liquid under different filling ratios was constructed based on the equivalent *** Fluent was used to simulate the moment acting on the wall of the tank by the lateral sloshing of the liquid,and then the parameters of the equivalent mechanical model are obtained by fitting and *** analysis of Fluent simulation and bench test on lateral sloshing of tank liquid under different filling *** results show that the lateral sloshing trend of the tank liquid level obtained from the Fluent simulation and the bench test was consistent,which proved the accuracy of the Fluent fluid simulation process and the correctness of the required equivalent mechanical model *** a liquid sloshing equivalent model,a four-degree-of-freedom vertical dynamic model of the sprayer half-car was ***,the performance of the sprayer was systematically analyzed and compared under the excitation of a bump road and a random E-level *** investigation took into account varying liquid filling ratios of 10%,50%,and 90%.The focus lay on evaluating the vertical acceleration of the sprayer body,dynamic deflection of the suspension,and dynamic load on the tires in response to these road *** analysis is conducted independently of the liquid sloshing *** results show that the lateral sloshing of the liquid medicine significantly reduces the ride smoothness of the machine,and makes the vibration response of the machine produce a certain hysteresis *** the reduction of the quality of the liquid medicine in the spray tank,the vibration amplitude of the sprayer body gradually decreases,the hysteresis effect is also gradually *** results presented in this study offer a

关键词： high clearance self-propelled sprayer liquid lateral sloshing ride comfort system dynamics simulation