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2013 IEEE/ACIS 12th International Conference on computer and Information science, ICIS 2013

作者： Ogawa, Naoto Oikawa, Shuich Department of Computer Science University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8573 Japan Division of Information Engineering Faculty of Engineering Information and Systems University of Tsukuba Japan

ISBN: (纸本)9781479901746

Smartphones become popular. They have various sensors and connection modules. They employ a mobile operating system for the control of sensors and modules. In this situation, a large amount of data comes to the operating system from sensors and modules. While such data is important for effective operations of smartphones, it is not well known that how it affects the operating system performance. In this paper, we prepare an experiment environment that mimics a smartphone. We selected the Android as an operating system and the Pandaboard-ES as a target board. The Pandaboard-ES equips a Bluetooth module. We select Wii Remote to operate the Android via Bluetooth. We implement programs to use Wii Remote as the input device of the Android, and improve this program. We make change a profiling software for the Linux and are enable to use it on the Android. © 2013 IEEE.

关键词： Bluetooth

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Measuring the effects of human interaction devices for Android

Measuring the effects of human interaction devices for Andro...

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1st IEEE Global Conference on Consumer Electronics, GCCE 2012

ISBN: (纸本)9781467315005

Smartphones become popular. They have various sensors in order to bring many functions to users. They employ a mobile operating system for the control of sensors. In this situation, a large amount of data comes to the operating system from sensors. While such data is important for effective operations of smartphones, it is not well known that how it affects the operating system performance. This paper describes an evaluation environment that mimics a smartphone. We selected the Android as an operating system and the Pandaboard-ES as a target board. The Pandaboard-ES equips a Bluetooth module, and the Wii Remote is used to operate the board via Bluetooth. We perform benchmark tests to evaluate sensor effects to the operating system, and the result shows that sensors have a harmful effect to the performance. © 2012 IEEE.

关键词： Smartphones

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A Communication-Induced Checkpointing Algorithm for Consistent-Transaction in Distributed Database systems 1

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8th International Symposium on Security in Computing and Communications, SSCC 2020

作者： Mansouri, Houssem Pathan, Al-Sakib Khan Laboratory of Networks and Distributed Systems Computer Science Department Faculty of Sciences Ferhat Abbas Setif University 1 Setif Algeria Department of Computer Science and Engineering Independent University Dhaka Bangladesh

ISBN: (数字)9789811604225

ISBN: (纸本)9789811604218

For better protection of distributed systems, two well-known techniques are: checkpointing and rollback recovery. While failure protection is often considered a separate issue, it is crucial for establishing better secure distributed systems. This article is dedicated to the proposal of a new checkpointing algorithm for saving a consistent-transaction state in distributed databases ensuring that database management systems are able, after a failure, to recover the state of the database. The proposed communication-induced algorithm does not hamper the normal transaction processing and saves a global consistent-transaction state that records only the fully completed transactions. Analysis and experimental results of our proposal show that the proposed scheme saves a minimum number of forced checkpoints and has some performance gains compared to the alternative approaches. © 2021, Springer Nature Singapore Pte Ltd.

关键词： Distributed database systems

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Multi-level queue NVM/DRAM hybrid memory management with language runtime support

Multi-level queue NVM/DRAM hybrid memory management with lan...

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Research in Adaptive and Convergent systems, RACS 2015

作者： Nakagawa, Gaku Oikawa, Shuichi Department of Computer Science University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki Japan Division of Information Engineering Faculty of Engineering Information and Systems University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki Japan

ISBN: (纸本)9781450337380

Non-volatile memory devices (NVM) devices, such as PCM, STT-MRAM, and ReRAM, enable the integration of secondary storage into main memory. This integration reduces I/O access to slow block devices;however, it is currently unrealistic to construct a large capacity main memory with a single NVM, because such devices have certain write access limitations. Combining NVM and other memory devices is necessary to overcome such disadvantages. Several researches discussed NVM/DRAM hybrid memory, combining NVM and DRAM. To use NVM/DRAM hybrid memory, the placement of data between NVM and DRAM must be determined. In particular, write-hot data should be allocated to DRAM and write-cold data to NVM. For data placement, programming language runtime supports are useful because they possess more detailed information about write access than the operating systems. A previous research proposed the individual counting method to manage NVM/DRAM hybrid memory with programming language runtime support that determine data placement based on the number of write accesses to each object. However, it is difficult to determine dynamically threshold values for data placements using the individual counting method. Here we propose a multi-level queue method to distinguish between write-hot and write-cold data. Experimental results show that the proposed method resolves the limitations of the individual counting method. © 2015 ACM.

关键词： Dynamic random access storage

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UBI: User body interface for wearable and touch panel device

UBI: User body interface for wearable and touch panel device

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ACM International Joint Conference on Pervasive and Ubiquitous Computing and the 2015 ACM International Symposium on Wearable computers, UbiComp and ISWC 2015

作者： Kondo, Yuto Tanaka, Jiro Takahashi, Shin Department of Computer Science University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki Japan Faculty of Engineering Information and Systems University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki Japan

ISBN: (纸本)9781450335751

This study designed an interaction technique for transfer- ring digital information between a wearable device and a touch panel device. To this end, we developed a prototype system, referred to as a User Body Interface (UBI), that en- ables easy bidirectional data transmission using a human body communication technique. As a proof of principle, we demonstrate how this system works during an image ex- change scenario. Using the prototype UBI system, a user can transmit image data files bidirectionally between de- vices using only simple touch operations.

关键词： Display devices

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A Resilient Hierarchical Checkpointing Algorithm for Distributed systems Running on Cluster Federation 1

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7th International Symposium on Security in Computing and Communications, SSCC 2019

作者： Mansouri, Houssem Pathan, Al-Sakib Khan Laboratory of Networks and Distributed Systems Computer Science Department Faculty of Sciences Ferhat Abbas Setif University 1 Sétif Algeria Department of Computer Science and Engineering Southeast University Dhaka Bangladesh

ISBN: (数字)9789811548253

ISBN: (纸本)9789811548246

In distributed systems, checkpointing method can be used to ensure fault-tolerance, which in turn could help the system’s security and stability. In simple terms, checkpointing means saving status information of a system. In this work, a novel hierarchical checkpointing algorithm for distributed systems is proposed, which runs on cluster federation. This algorithm is based on two well-known techniques in the literature and it ensures that a locally consistent state is always maintained in each cluster with a global optimistic logging technique between clusters. The proposed algorithm synchronizes the intra- and inter-cluster checkpointing process in such way that each checkpoint taken locally in any cluster is a segment of the consistent global state. Compared to other works, our scheme has low message cost as it makes sure that only few processes in each cluster record checkpoints for any execution operation. © Springer Nature Singapore Pte Ltd. 2020.

关键词： Fault tolerance

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An associative learning experiment using the plasmodium of Physarum polycephalum

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Nano Communication Networks 2011年第2-3期2卷 99-105页

作者： Shirakawa, Tomohiro Gunji, Yukio-Pegio Miyake, Yoshihiro Department of Computer Science School of Electrical and Computer Engineering National Defense Academy of Japan 1-10-20 Hashirimizu Yokosuka Kanagawa 239-8686 Japan Department of Earth and Planetary Science Graduate School of Science Kobe University 1-1 Rokkodai Kobe Hyogo 657-8501 Japan Dept. of Earth and Planetary Science Faculty of Science Kobe University 1-1 Rokkodai Kobe Hyogo 657-8501 Japan Department of Computational Intelligence and Systems Science Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology 4259 Nagatsuta Midori Kanagawa 226-8502 Japan

The plasmodium of Physarum polycephalum is a unicellular and multinuclear giant amoeba that shows adaptive behaviors. To test the presence of memory and learning ability in the plasmodium, we performed an associative learning experiment using the unicellular organism. The plasmodium in this experiment seemed to acquire a reversed thermotactic property, a new preference for the lower temperature. The result implied a possibility of unicellular learning, though in a preliminary way. We also discuss a possible mechanism of learning by the organism. © 2011 Elsevier Ltd.

关键词： Biology

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Corrigendum to “Multi population-based chaotic differential evolution for multi-modal and multi-objective optimization problems” Appl. Soft Comput. 132 (2023) 109909

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Applied Soft Computing 2025年 169卷

作者： Hafiz Tayyab Rauf Jiechao Gao Ahmad Almadhor Ali Haider Yu-Dong Zhang Fadi Al-Turjman Centre for Smart Systems AI and Cybersecurity Staffordshire University Stoke-on-Trent United Kingdom Department of Computer Science University of Virginia USA Department of Computer Engineering and Networks College of Computer and Information Sciences Jouf University Sakaka 72388 Saudi Arabia Department of Computer Science University of Gujrat Gujrat Pakistan School of Informatics University of Leicester Leicester LE1 7RH UK Research Center for AI and IoT Faculty of Engineering University of Kyrenia Mersin 10 Turkey Artificial Intelligence Engineering Dept. AI and Robotics Institute Near East University Mersin 10 Turkey

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New Level-Set-Based Shape Recovery Method and its application to sparse-view shape tomography 4

New Level-Set-Based Shape Recovery Method and its applicatio...

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4th International Conference on Digital Medicine and Image Processing, DMIP 2021

作者： Ali, Haytham A. Kudo, Hiroyuki Department of Computer Science Graduate School of Systems and Information Engineering University of Tsukuba Tennoudai 1-1-1 Tsukuba305-8573 Japan Department of Mathematics Faculty of Science Sohag University Sohag82524 Egypt

ISBN: (纸本)9781450386487

The recovery of shapes from a few numbers of their projections is very important in Computed tomography. In this paper, we propose a novel scheme based on a collocation set of Gaussian functions to represent any object by using a limited number of projections. This approach provides a continuous representation of both the implicit function and its zero level set. We show that the appropriate choice of a basis function to represent the parametric level-set leads to an optimization problem with a modest number of parameters, which exceeds many difficulties with traditional level set methods, such as regularization, re-initialization, and use of signed distance function. For the purposes of this paper, we used a dictionary of Gaussian function to provide flexibility in the representation of shapes with few terms as a basis function located at lattice points to parameterize the level set function. We propose a convex program to recover the dictionary coefficients successfully so it works stably with only four projections by overcoming the issue of local-minimum of the cost function. Finally, the performance of the proposed approach in three examples of inverse problems shows that our method compares favorably to Sparse Shape Composition (SSC), Total Variation, and Dual Problem. © 2021 ACM.

关键词： Convex optimization

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A Study on Computational Methods of the Logistic Map over Integers for a Pseudorandom Number Generator 15

A Study on Computational Methods of the Logistic Map over In...

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15th International Symposium on Information Theory and Its Applications, ISITA 2018

作者： Araki, Shunsuke Muraoka, Hideyuki Miyazaki, Takeru Uehara, Satoshi Kakizaki, Kenrichi Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology 680-4 Kawazu Iizuka Fukuoka820-8502 Japan Graduate School of Computer Science and Systems Engineering Kyushu Institute of Technology 680-4 Kawazu Iizuka Fukuoka820-8502 Japan Faculty of Environmental Engineering University of Kitakyushu 1-1 Hibikino Wakamatsu Kitakyushu Fukuoka808-0135 Japan

ISBN: (纸本)9784885523182

In this paper, we will discuss properties of different computational methods of the logistic map over integers. We will give four computational methods of the map in order to implement the map on a computer with limited memories, and then will evaluate average processing times and lengths of sequences generated by these methods. By these results, we will provide a constructive use of these four computational methods of the logistic map over integers for a design of the pseudorandom number generator. © 2018 IEICE.

关键词： Computational methods

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