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Cooperating CoScheduling:A Coscheduling Proposal Aimed at Non-Dedicated Heterogeneous NOWs

Journal of Computer Science & Technology 2007年第5期22卷 695-710页

作者： francesc giné francesc Solsona Mauricio Hanzich Porfidio Hernández Emilio Luque Department of Computer Science Universitat de Lleida Spain Department of Computer Architecture & Operating Systems Universitat Autònoma de Barcelona Spain

Implicit coscheduling techniques applied to non-dedicated homogeneous Networks Of Workstations （NOWs） have shown they can perform well when many local users compete with a single parallel job. Implicit coscheduling deals with minimizing the communication waiting time of parallel processes by identifying the processes in need of coscheduling through gathering and analyzing implicit runtime information, basically communication events. Unfortunately, implicit coscheduling techniques do not guarantee the performance of local and parallel jobs, when the number of parallel jobs competing against each other is increased. Thus, a low efficiency use of the idle computational resources is achieved. In order to solve these problems, a new technique, named Cooperating CoScheduling （CCS）, is presented in this work. Unlike traditional implicit coscheduling techniques, under CCS, each node takes its scheduling decisions from the occurrence of local events, basically communication, memory, Input/Output and CPU, together with foreign events received from cooperating nodes. This allows CCS to provide a social contract based on reserving a percentage of CPU and memory resources to ensure the progress of parallel jobs without disturbing the local users, while coscheduling of communicating tasks is ensured. Besides, the CCS algorithm uses status information from the cooperating nodes to balance the resources across the cluster when necessary. Experimental results in a non-dedicated heterogeneous NOW reveal that CCS allows the idle resources to be exploited efficiently, thus obtaining a satisfactory speedup and provoking an overhead that is imperceptible to the local user.

关键词： job scheduling non-dedicated and heterogeneous NOW computing resource allocation

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A Secure Elliptic Curve-Based RFID Protocol

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Journal of Computer Science & Technology 2009年第2期24卷 309-318页

作者： Santi Martínez Magda Valls Concepció Roig Josep M. Miret francesc giné Computer Science Department Universitat de Lleida Mathematics Department Universitat de Lleida

Nowadays, the use of Radio Frequency Identification （RFID） systems in industry and stores has increased Nevertheless, some of these systems present privacy problems that may discourage potential users. Hence, high confidence and efficient privacy protocols are urgently needed. Previous studies in the literature proposed schemes that are proven to be secure, but they have scalability problems. A feasible and scalable protocol to guarantee privacy is presented in this paper. The proposed protocol uses elliptic curve cryptography combined with a zero knowledge-based authentication scheme. An analysis to prove the system secure, and even forward secure is also provided.

关键词： elliptic curve cryptography forward security RFID zero knowledge

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世界第一名餐厅什么样？让人吃哭了的美食哲学与情感魔法

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环球人文地理 2024年第13期 62-67页

作者：王洁 francesc Guillamet Ernest Abentin Joan Valera

万众瞩目的 2024世界50佳餐厅榜单揭晓，西班牙Disfrutar餐厅摘得桂冠！Disfrutar可译为“享受”，店如其名，这里呈献的美食体验堪称全球之最，每一口，都是对味蕾边界的惊喜探索。北京时间2024年6月6日，最受美食界瞩目和认可的国际...

万众瞩目的 2024世界50佳餐厅榜单揭晓，西班牙Disfrutar餐厅摘得桂冠！Disfrutar可译为“享受”，店如其名，这里呈献的美食体验堪称全球之最，每一口，都是对味蕾边界的惊喜探索。北京时间2024年6月6日，最受美食界瞩目和认可的国际榜单——“The World’s 50 Best Restaurants（世界50佳餐厅）”公布了今年的排名，位于西班牙巴塞罗那的米其林三星餐厅Disfrutar荣登榜首！

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Incipient sliding of adhesive contacts

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Friction 2022年第6期10卷 963-976页

作者： francesc PÉREZ-RÀFOLS Lucia NICOLA Department of Industrial Engineering University of PadovaPadua I-35131Italy Department of Material Science and Engineering Delft University of TechnologyDelft 2628 CN the Netherlands

A model is proposed herein to investigate the incipient sliding of contacts in the presence of both friction and adhesion,where the interfacial response is modeled based on traction-separation laws.A Maugis-like parameter is defined to characterize the response in the tangential ***,the model is used to investigate the contact between a smooth cylinder and a flat body,where adhesion-friction interactions are strong.A range of behaviors are observed when a tangential displacement is imposed:When the parameter is low,the contact pressure exhibits a relatively constant profile;when it is high,a pressure spike is observed at the edge of the *** difference is caused by a significant interface compliance in the former case,which limits the amount of *** results for the mid-range values of the Maugis-like parameter can qualitatively replicate various experiments performed using polydimethylsiloxane(PDMS)balls.

关键词： incipient sliding adhesion traction-separation laws

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Enhanced ablation efficiency for silicon by femtosecond laser microprocessing with GHz bursts in MHz bursts(BiBurst)

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International Journal of Extreme Manufacturing 2022年第1期4卷 75-83页

作者： francesc Caballero-Lucas Kotaro Obata Koji Sugioka RIKEN Center for Advanced Photonics 2-1 HirosawaWako-shiSaitama 351-0198Japan

Ultrashort laser pulses confine material processing to the laser-irradiated area by suppressing heat diffusion,resulting in precise ablation in diverse ***,challenges occur when high speed material removal and higher ablation efficiencies are *** burst mode laser ablation has been proposed as a successful method to overcome these *** this approach,we studied the influence of combining GHz bursts in MHz bursts,known as Bi Burst mode,on ablation efficiency of *** Burst mode used in this study consists of multiple bursts happening at a repetition rate of 64 MHz,each of which contains multiple pulses with a repetition rate of 5 *** obtained results show differences between Bi Burst mode and conventional single pulse mode laser ablation,with a remarkable increase in ablation efficiency for the Bi Burst mode,which under optimal conditions can ablate a volume4.5 times larger than the single pulse mode ablation while delivering the same total energy in the process.

关键词： BiBurst mode GHz burst laser ablation surface microfabrication

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Heavy metals in a typical city-river-reservoir system of East China:Multi-phase distribution,microbial response and ecological risk

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Journal of Environmental Sciences 2022年第2期34卷 343-354页

作者： Jun Yang Mingrui Zhou Kaifeng Yu Karina Yew-Hoong gin Muhammad Hassan Yiliang He School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China NUS Environmental Research Institute National University of Singapore1-Create Way#15-02 Create TowerSingapore 138602Singapore China-UK Low Carbon College Shanghai Jiao Tong UniversityShanghai 200240China Department of Civil and Environmental Engineering National University of Singapore1 Engineering Drive 2Singapore 117576Singapore Ecology and Chemical Engineering Department South Ural State UniversityLenin Prospect 76Chelyabinsk 454080Russian Federation

The rapid construction of artificial reservoirs in metropolises has promoted the emergence of city-river-reservoir systems *** study investigated the environmental behaviors and risks of heavy metals in the aquatic environment of a typical system composed of main watersheds in Suzhou and Jinze Reservoir in *** shown that Mn,Zn and Cu were the dominant metals detected in multiple ***,Mn and Zn were mainly presented in exchangeable fraction and exhibited high *** proportion and high mobility of metals were found in suspended particulate matter(SPM),suggesting that SPM can greatly affect metal multi-phase distribution ***,city system(Ci S)exhibited more serious metal pollution and higher ecological risk than river system(Ri S)and reservoir system(Re S)owing to the diverse emission *** S and Re S were regarded as critical pollution source and sink,respectively,while Ri S was a vital transportation *** community in sediments exhibited evident spatial variation and obviously modified by exchangeable metals and *** particular,Bacteroidetes and Firmicutes presented significant positive correlations with most exchangeable *** assessment implied that As,Sb and Ni in water may pose potential carcinogenic risk to human ***,Re S was in a fairly safe *** was the main risk contributor in SPM,while Cu,Zn,Ni and Sb showed moderate risk in ***,Hg,Sb and Ci S were screened out as priority metals and system,*** attention should be paid to these priority issues to promote the sustainable development of the watershed.

关键词： Heavy metal Multi-phase Chemical fraction City-river-reservoir system Microbial community

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Nano-scale coating wear measurement by introducing Raman-sensing underlayer

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Journal of Materials Science & Technology 2022年第1期96卷 285-294页

作者： Nan Xu Chun Wang Liuquan Yang Eric Kumi Barimah gin Jose Anne Neville Ardian Morina Institute of Functional Surfaces School of Mechanical EngineeringUniversity of LeedsLeedsLS29JTUnited Kingdom School of Chemical and Process Engineering University of LeedsLeedsLS29JTUnited Kingdom

For gaining fundamental insight into coating wear mechanisms and increasing operational efficiency and automation degree of equipment in important application fields of coating techniques,it is of great importance to developing novel wear measurement techniques enabling nanoscale studies of coating wear in the running process,but this remains a significant ***,a facile strategy is reported to achieve accurate coating thickness quantification at nanoscale level,which is based on a bilayer structure:a top target layer of a-C:H(hydrogenated amorphous carbon)film is considered as a light attenuating and anti-wear layer while underlayer of silicon serves as Raman-sensing *** constructing the relationship between the thickness of a-C:H and Raman intensity of attenuated silicon signal,the coating thickness quantification method is established and successfully applied to quantify coating wear in the friction *** approach can effectively avoid remarkable errors caused by tribo-induced effects in the interface regions,demonstrating its advantage in error *** about these tribo-induced effects are also elucidated by a combination of Raman spectroscopy,optical profilometer,EELS,and *** particular,the proposed approach enables the possibility of measuring coating wear with oil film on top,which breaks an important limitation of existed wear measurement methods,i.e.,incapable of applying in oil-lubricated *** approach can be used to quantify the wear condition of diverse target coatings and has the potential of online wear monitoring when combining a compact laser excitation and detection system.

关键词： Coating Wear measurement Raman Layered structure Nanoscale

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Phalloplasty following penectomy for penile cancer

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Asian Journal of Urology 2022年第4期9卷 460-466页

作者： Wai gin Lee A.Nim Christopher David J.Ralph University College London Hospital LondonUnited Kingdom St Peter’s Andrology LondonUnited Kingdom

Objective:Penile reconstruction or phalloplasty following penectomy can be offered where the functional penile length is inadequate for a man to void while standing or to have sexual *** is usually staged due to the complex surgical techniques *** narrative review describes the technical concepts and summarises the contemporary outcomes following phalloplasty in this challenging ***:A retrospective review of the English literature was performed between January 1946 till November *** data were synthesised and complemented by the expert opinion of the authors with 20 years of experience in this *** flaps are ideally designed with an integrated urethra or alternatively,a further free flap urethroplasty can be ***-plasty is further complicated following penectomy by scarring from the previous surgery and the potential loss of structures that would normally be present at the recipient ***:There are limited published data with a total of 19 men recorded in the *** the radial artery forearm free flap and anterolateral thigh flap have been described in this cohort of *** outcomes including standing micturition,sensation in the neo-phallus,and the ability to orgasm are *** quality of life and satisfaction was also good despite the high risk for long-term complications of the neophallus and donor ***:Phalloplasty following penectomy requires microsurgical transfer of a free flap or a pedicled flap to reconstruct a *** erectile device is inserted at a later stage to facilitate sexual intercourse,if *** scarring from penectomy and the potential loss of vasculature that would normally be present at the recipient site may further complicate *** and functional outcomes are acceptable based on the limited published experience to date.

关键词： Humans Male Myocutaneous flap or transplantation Penis or surgery Phalloplasty Reconstructive surgical procedures Retrospective study Surgical flap Thigh or surgery Treatment outcome Urethra or surgery

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Modified Hawking effect from generalized uncertainty principle

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Communications in Theoretical Physics 2021年第1期73卷 62-67页

作者： Jaume giné Departament de Matemàtica Universitat de LleidaCataloniaSpain

We use the generalized uncertainty principle to compute the first correction to the Hawking temperature associated to Hawking *** this value we obtain a new evaporation time and entropy of any Schwarzschild black hole... 详细信息

关键词： Hawking effect quantum fluctuations uncertainty principle

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The Center Problem for a Linear Center Perturbed by Homogeneous Polynomials

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Acta Mathematica Sinica,English Series 2006年第6期22卷 1613-1620页

作者： Jaume gin■ Departamentde Matemàtica Universitat de Lleida Av.Jaume Ⅱ

The centers of the polynomial differential systems with homogeneous polynomials have been studied for the degrees s = 2, 3, 4, 5. for s = 2, 3, and partially classified for s = 4, 5. In this paper we recall and we give new centers for s = 6, 7 a linear center perturbed by They are completely classified these results for s = 2, 3, 4, 5,

关键词： Center problem Nonlinear differential equations

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