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5th ACM Asia-Pacific Workshop on systems, APSYS 2014

作者： Tan, Cheng Li, Haibo Xia, Yubin Zang, Binyu Chu, Cheng-Kang Li, Tieyan Institute of Parallel and Distributed Systems Shanghai Jiao Tong University China Software School Fudan University China State Key Laboratory of Computer Architecture ICT Chinese Academy of Sciences China Huawei Technologies Pte Ltd. Singapore Singapore

ISBN: (纸本)9781450330244

Prior mobile malware defensive means is usually retroactive, which may either lead to high false negatives or can hardly recover systems states from malware activities. PreCrime is a proactive malware detection scheme that detects and stops malware activities from happening. PreCrime creates mirrors of a mobile device in a resource-rich and trusted cloud, which speculatively executes multiple likely user operations concurrently to detect potential tampering and information leakage. Our preliminary evaluation shows that PreCrime introduces small performance overhead on smartphones and feasible delay during speculative execution on the cloud. © 2014 ACM.

关键词： Malware

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Paving the way for the future of Short Sea Shipping: The MOSES project

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Transportation Research Procedia 2023年 72卷 2101-2108页

作者： Margarita Kostovasili John Kanellopoulos Nikolaos Ventikos Konstantinos Louzis Haris Oikonomidou Christos Pollalis I-SENSE Institute of Communication and Computer Systems (ICCS) Zografou Greece Laboratory for Maritime Transport School of Naval Architecture & Marine Engineering NTUA Zografou Greece

As the European Union (EU) has aimed for a modal shift from road transport to other more sustainable transport modes, such as rail or waterborne transport, Short Sea Shipping (SSS) has gained more attention. In order to provide an overview of SSS component in the European supply chain, the current status, established networks and legislative drivers for its promotion are analyzed, as well as relevant shortcomings and potential market opportunities. In parallel, the contribution of MOSES project to SSS is examined, through the development of innovative solutions aiming to address the vulnerabilities and strains related to the operation of large containerships and the engagement of port community stakeholders. Finally, associated business cases are presented, along with the expected results of MOSES project and the foreseen benefits towards SSS promotion and enhancement.

关键词： Waterborne transport Container supply chain Automated docking Container handling Horizontal logistics collaboration Short-sea and deep-sea shipping

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cco-exist with other services on a VM-based virtualized computing platform?

cco-exist with other services on a VM-based virtualized comp...

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2007 Asian Technology Information Program's (ATIP's) 3rd Workshop on High Performance Computing in China - Solution Approaches to Impediments for High Performance Computing, CHINA HPC'07

作者： Song, Ying Wang, Hui Li, Yaqiong Sun, Yuzhong Zeng, Yu Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China National Research Center for Intelligent Computing Systems ICT Beijing 100080 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

ISBN: (纸本)9781595939036

Trend towards providing heterogeneous services concurrently by ISPs and low utilization of servers make it necessary to consolidate various services computing into a single platform. In such a shared environment, meeting application-level QoS goals and avoiding interaction among services become challenges as each application consumes different amount of resource and requires different QoS. Video-on-demand (VoD) has been identified as an important application among multimedia services. In this paper, we study a case of interaction among services concurrently running on a virtualized computing environment. The contributions of this paper are follows. 1) We design a novel capability service computing framework for service computing consolidation (CSCF) to study the interaction among concurrent services in a VM-Based Virtualized Computing Environment;2) A dynamic and lazy memory flowing algorithm (DLMFaVM) among VMs is proposed to partially fulfill this computing model by resource flowing;3) We also develop a virtualized computing platform to study the possibility of service computing consolidation;4) We analyze the interaction among VoD service and other typical enterprise services in our capability service computing environment and draw a conclusion that the VoD streaming service co-existing with other services on a VM-based virtualized computing platform is a trend for ISPs. But it presents some challenges for the designers of service soft and the designers of service computing platform. Copyright 2007 ACM.

关键词： Video on demand

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Emotional stress detection in contradictory versus self-consistent speech by means of voice biometrical signature

Emotional stress detection in contradictory versus self-cons...

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5th International Work-Conference on the Interplay Between Natural and Artificial Computation, IWINAC 2013

作者： Rodellar-Biarge, Victoria Palacios-Alonso, Daniel Bartolomé, Elena Gómez-Vilda, Pedro Neuromorphic Speech Processing Laboratory Universidad Politécnica de Madrid Campus de Montegancedo s/n 28223 Pozuelo de Alarcón Spain Madrid Department of Architecture and Technology Systems Faculty of Computer Science Polytechnic University Madrid Spain

ISBN: (纸本)9783642386367

Most of the parameters proposed for the characterization of the emotion in speech concentrate their attention on phonetic and prosodic features. Our approach goes beyond by trying to relate the biometrical signature of voice with a possible neural activity that might generate voice production. The present study affords emotional differentiation in speech from the behavior of the biomechanical stiffness and cyclicality estimates, indicators of tremor. The emotion under study is the stress produced when a speaker has to defend an idea opposite to his/her thoughts or feelings and compared when his/her speech is self-consistent. The results presented show that females tend to relax vocal folds and decrease tremor and males tend to show the opposite behavior. © 2013 Springer-Verlag.

关键词： Biomechanics

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SFIDE: A simulation infrastructure for data centers 49

SFIDE: A simulation infrastructure for data centers

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49th Summer computer Simulation Conference, SCSC 2017, Part of the 2017 Summer Simulation Multi-Conference, SummerSim 2017

作者： Penas, Ignacio Zapater, Marina Risco-Martín, José L. Ayala, José L. Green Integrated Systems Laboratory Technical University of Madrid Av. Complutense 30 Madrid28040 Spain Dpt. of Computer Architecture and Automation Complutense University of Madrid C/Prof. José García Santesmases 9 Madrid28040 Spain

ISBN: (纸本)9781510838284

Data centers are huge power consumers and have very high operational costs. Both industry and academia have proposed strategies at multiple levels (server, room layout, cooling, workload allocation, etc.) to increase the efficiency of these facilities. Testing the impact of variables so different in nature such as layout or workload allocation can only be managed by simulators. Current simulation infrastructures are either focused on data room thermal dynamics, or target only a specific stage of data center operations, such as workload allocation. Moreover, they are geared for specific use-cases such as HPC or cloud computing. In this paper we present a data center modeling and simulation framework, for both HPC and cloud applications, to assess data center performance, thermal behavior, energy efficiency and operational cost. Our goal is to show the possibilities of the current data center modeling and simulation framework. Furthermore, as we provide a fully configurable, flexible and scalable infrastructure any kind of policy, data center size or workload amount could easily be implemented over the simulator. We also provide the data sets used to validate our models and policies, obtained from real servers and data centers, so as to enable researchers to test their strategies in a realistic setup. © 2017 Society for Modeling & Simulation International (SCS).

关键词： Smart power grids

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Software-based dynamic reliability management for GPU applications

Software-based dynamic reliability management for GPU applic...

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Annual International Symposium on Reliability Physics

作者： Si Li Vilas Sridharan Sudhanva Gurumurthi Sudhakar Yalamanchili Computer Architecture Systems Laboratory Georgia Institute of Technology Advanced Micro Devices Inc Santa Clara CA US

ISBN: (纸本)9781467391382

In this paper we propose a framework for dynamic reliability management (DRM) for GPU applications based on the idea of plug-n-play software-based reliability enhancement (SRE). The approach entails first assessing the vulnerability of GPU kernels to soft errors in program visible structures. This assessment is performed on a low level intermediate program representation rather than the application source. Second, this assessment guides selective injection of code implementing SRE techniques to protect the most vulnerable data. Code injection occurs transparently at runtime using a just-in-time (JIT) compiler. Thus, reliability enhancement is selective, transparent, on-demand, and customizable. This flexible, automated software-based DRM framework can provide an adaptable, cost-effective approach to scaling reliability of large systems. We present the results of a proof of concept implementation on NVIDIA GPUs demonstrating the ability to traverse a range of performance reliability tradeoffs.

关键词： Reliability Graphics processing units Registers Kernel computer architecture Transient analysis

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Organizational architectures and mission requirements: A model to determine congruence

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systems Engineering 2003年第3期6卷 184-194页

作者： Handley, Holly A.H. Levis, Alexander H. Systems Architectures Laboratory C3I Center George Mason University Fairfax VA 22030 George Mason University Systems Architecture Laboratory Department of Electrical Computer and Systems Engineering C3I Center System Architectures Laboratory

In order to determine congruence between proposed organizational architectures and evolving mission requirements, an executable model was developed in support of a subject experiment testing the hypothesis that an organization congruent with an expected mission results in better performance than a noncongruent organization. The model is based on the task process, the sequence of stages that occur in order to complete a task, where the delays of each stage are based on the interactions of the task with decision-makers and resources;in this case, tasks are limited to simple tasks completed by a single decision-maker with a single resource. The model is configured to a particular organizational design and simulated with a scenario, a list of tasks and their parameters that characterize the mission. Congruence is determined by using regression analysis to fit a linear equation to the output of the simulation and computing the coefficient of determination to evaluate the fit. The model was developed with trial experiment data and validated with post-experimental results. This model provides the foundation for a future, second order model that will include multiple decision-makers interacting with multiple resources to complete complex tasks. © 2003 Wiley Periodicals, Inc.

关键词： Architectural design

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A microarchitectural performance evaluation of a 3.2 Gbyte/s microprocessor bus 26

A microarchitectural performance evaluation of a 3.2 Gbyte/s...

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IEEE/ACM International Symposium on Microarchitecture (MICRO)

作者： Tim Stanley Michael Upton Patrick Sherhart Trevor Mudge Richard Brown Advanced Computer Architecture Laboratory Department of Electrical Engineering-Systems University of Southern California USA Department of Electrical Computer Engineering Drexel University Philadelphia PA USA Advanced Computer Architecture Laboratory Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor Michigan

ISBN: (纸本)9780818652806

The conventional classification of inter-instruction dependencies (data, anti and output dependencies) provides a basic scheme for the analysis of pipeline hazards in pipelined instruction set processors. However, it does not consider the relative spatial positions of micro-operations in the pipeline, thus providing limited hints to hardware designers and compiler writers about the hazard resolution in generalized pipeline structures. The authors propose an extension to the conventional classification of dependencies, which is capable of encapsulating the spatial/temporal relationship and providing precise hardware/software resolution strategies. With the extended classification and its associated hardware/software resolution strategies, they are able to systematically analyze the potential register-related pipeline hazards for a given pipeline structure, determine appropriate resolution strategies, and explore the tradeoff between hardware and software complexities. The methodology enables the systematic synthesis of high performance pipelined micro-architectures, and is useful to derive the back-end of the supporting compilers.< >

关键词： Hazards Pipeline processing Hardware Application software computer architecture Laboratories High level synthesis Design automation Throughput System performance

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Geospatial exploration of geothermal reservoirs in the Souss Massa regions of the anti-atlas and Moroccan Sahara 5

Geospatial exploration of geothermal reservoirs in the Souss...

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5th Edition of the International Conference on Materials and Environmental Science, ICMES 2022

作者： El Bouazouli, Abderrahim Baidder, Lahssen Bahi, Hicham Abdehamid, Fadil Rhouzlane, Said Moussaoui, Rabia Oukrich, Nadia Baite, Wissal Hlal, Mohammed Laboratory of Geosciences Faculty of Sciences Aïn Chock University Hassan II of Casablanca Morocco School of Architecture Planning and Design Mohammed VI Polytechnic University Benguerir Morocco Morocco Polytechnic School of Montreal Canada Laboratory of Industrial Equipe Architecture de Systems ENSEM Morocco Research Laboratory in Computer Science and Education The Mohammedia School of Engineering Rabat Morocco Laboratory of Industrial Engineering Sciences and Technologies Faculty Sultan Moulay Slimane University Beni Mellal Morocco Laboratory Dynamics of Arid Environments Mohamed Premier University Oujda Morocco

Geothermal reservoirs refer to any heat stored, naturally, in the earth’s crust;it is considered as resource coming from a natural complex depending on the geological, geophysical aspect and territories geochemistry. Although this natural resource remains distinguished by his characters to be a renewable, ecological, universal and sustainable mining energy, it stills not, yet, sufficiently exploitable worldwide (El Bouazouli et al., 2020). The same finding was brought up in Moroccan context, despite the presence of some hot resources and capitalizable scientific research to develop this potential. Prospecting for underground geothermal resources is an expensive project that deserves to mobilize scientific and technical methods in order to overcome this risky impasse. Thus, Geomatics has been used, drawing on Remote Sensing for geo-spatial exploration in order to guide prospecting through the development of geothermal deposits potential maps at very low and medium depth on Moroccan territories (El Bouazouli et al., 2019). Furthermore, we explore smart tools to support short and long-term decision-making in terms of creating of clean energy mix and complementary mining energy as well as investment in energy exploration operations. And, as an experiment, we chose for this study, areas distributed mainly in the Moroccan Sahara and the Souss Massa Region, known, probably, by a potentially high geothermal gradient, and therefore constituting geothermal energy reservoirs. As for the exploration methodology adopted, it consists in processing of the imageries: LANDSAT 8, MODIS AND ASTER, in order to extract exploitation indices such as the surface temperature, the layer of lineaments and cracks density, and evidence of hydrothermal alteration that may indicate geothermal activity. The correlation between these three factors, will lead us to conclude that the Moroccan Sahara area is considered as one of the most potential geothermal reservoir areas in Morocco. In short, the a

关键词： Geothermal prospecting

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Theoretical treatment of sink scheduling problem in wireless sensor networks

Theoretical treatment of sink scheduling problem in wireless...

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2011 IEEE Conference on computer Communications Workshops, INFOCOM WKSHPS 2011

作者： Gu, Yu Ji, Yusheng Li, Jie Zhao, Baohua Information Systems Architecture Science Research Division National Institute of Informatics Tokyo Japan State Key Laboratory of Networking and Switching Technology Beijing 100876 China School of Computer Science Univ. of Science and Technology of China Hefei Anhui 230027 China Department of Computer Science University of Tsukuba Ibaraki 305-8573 Japan

ISBN: (纸本)9781457702488

Sink Scheduling, in the form of scheduling multiple sinks among sink sites to leverage traffic burden, is an effective mechanism for the energy-efficiency of wireless sensor networks (WSNs). Due to the inherent difficulty (NP-hard in general), existing works on this topic mainly focus on heuristic/greedy algorithms and theoretic results remain unknown. In this paper, we fill in the research blank with two algorithms. The first one is based on the Column Generation (CG). It decomposes the original problem into two sub problems and solve them iteratively to approach the optimal solution. However, due to its high computational complexity, this algorithm is only suitable for small scale networks. The other one is a polynomial-time algorithm based on relaxation techniques to obtain an upperbound, which can serve as a performance benchmark for other algorithms on this problem. Through comprehensive simulations, we evaluate the efficiency of proposed algorithms. © 2011 IEEE.

关键词： Wireless sensor networks

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