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13th ACM Workshop on Hot Topics In Storage and File Systems, HotStorage 2021

作者： Jung, Jaewon Choi, Jungsik Han, Hwansoo DMC Engineering Sungkyunkwan University Mobile Div. Samsung Electronics Korea Republic of Computer Science and Eng. HPC Research Center Sungkyunkwan University Korea Republic of Computer Science and Eng. Human-AI Interaction Sungkyunkwan University Korea Republic of

ISBN: (纸本)9781450385503

With recent advancement in NVM technologies, non-volatile main memory(NVMM) has been highlighted as promising systems for large scale data centers. By utilizing memory-mapped IO, researchers have attempted to provide fast IOs without kernel mode switches and complex kernel IO layers. Even though they improve the performance by taking advantage of NVMM characteristics, memory-mapped IOs still require additional user-level logging techniques to guarantee write atomicity and file system integrity. We propose a user-level library file system, Libpubl, which is designed to minimize the write amplification overhead of traditional logging by exploiting persistent user buffers as logs. Libpubl ensures atomic updates of data and improves the performance and the scalability. Compared to the state-of-the-art NVM file systems, Libpubl increases the performance by 50∼120% in Fio benchmark. © 2021 Association for Computing Machinery.

关键词： Benchmarking

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Research Reviews on Network-based Congestion Control

Research Reviews on Network-based Congestion Control

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International Conference on Information Networking

作者： Yeunwoong Kyung Jaewook Lee Seokwon Jang Haneul Ko Seungmin Oh Jaehwan Lee Youngjun Kim Div. of Info. & Comm. Eng Kongju National University Cheonan Korea Dep. of Info. and Comm. Engineering Pukyong National University Busan Korea Mobile Core Network Research Section Electronics and Telecomm. Research Institute Daejeon Korea Dep. of Electronic Eng Kyung Hee University Yongin-si Korea Dep. of Computer Science and Eng Kongju National University Cheonan Korea School of Computer Science and Eng Kyungnam University Changwon Korea

ISBN: (数字)9798350330946

ISBN: (纸本)9798350330953

Congestion control has been considered as a principal technology for efficient end-to-end traffic transmission. Previous studies on congestion control are mainly focused on the control of the transmission rate or window size at the host. However, such host-based congestion controls have difficulties on short time-scale variable network conditions and increased host complexity. To address this problem, network-based congestion controls that utilize network information have been considered which determine and control the congestion using the network information. In this paper, we review the network-based congestion control methods.

关键词： Data analysis 5G mobile communication Reviews Network architecture Complexity theory

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Amateur Drones Detection: A machine learning approach utilizing the acoustic signals in the presence of strong interference

arXiv

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arXiv 2020年

作者： Uddin, Zahoor Altaf, Muhammad Bilal, Muhammad Nkenyereye, Lewis Bashir, Ali Kashif COMSATS University Islamabad Wah Campus Pakistan Div. of Computer and Electronics Systems Engineering Hankuk University of Foreign Studies Yongin-si17035 Korea Republic of Department of Computer and Information Security Sejong University Seoul Korea Republic of Department of Computing and Mathematics Manchester Metropolitan University United Kingdom

MSC Codes 68T45, 68T10, 62H30,Owing to small size, sensing capabilities and autonomous nature, the Unmanned Air Vehicles (UAVs) have enormous applications in various areas e.g., remote sensing, navigation, archaeology, journalism, environmental science, and agriculture. However, the un-monitored deployment of UAVs called the amateur drones (AmDr) can lead to serious security threats and risk to human life and infrastructure. Therefore, timely detection of the AmDr is essential for the protection and security of sensitive organizations, human life and other vital infrastructure. AmDrs can be detected using different techniques based on sound, video, thermal, and radio frequencies. However, the performance of these techniques is limited in Copyright © 2020, The Authors. All rights reserved.

关键词： Aircraft detection

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Human movement tracking method using inertial sensors for localization in wide spaces

Human movement tracking method using inertial sensors for lo...

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International Conference on Information and Communication Technology Convergence (ICTC)

作者： Joon-Seong Gim Bong-Young Woon Dong-Ho Choi Sang-Sun Lee Div. Electronics and Computer Engineering Hanyang University Seoul Korea

ISBN: (纸本)9781467371179

This paper presents a localization method in wide spaces using a sensor system consisting of an accelerometer and a single axis gyroscope. Specifically, the sensor board is loosely worn at three subjects' waists to make the system useful for practical applications. From the experimental results of the circular tracks with the radiuses of 1 m and 3 m, the turning angle threshold (TAT) algorithm is suggested with considering the threshold value of turning angles. The tracking experiments on the grid patterned track models have been performed, and the average distance deviations of the final tracking points from the destination points are approximately 15.2 m for raw data of the sensors and approximately 4.0 m for using TAT algorithm.

关键词： Tracking Turning Sensor systems Accelerometers Gyroscopes Aerospace electronics

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Facial expression recognition based on region specific appearance and geometric features

Facial expression recognition based on region specific appea...

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International Conference on Digital Information Management (ICDIM)

作者： Deepak Ghimire Sunghwan Jeong Sunhong Yoon Juhwan Choi Joonwhoan Lee IT Application Research Center Korea Electronics Technology Institute Jeonju-si Jeollabuk-do Rep. of Korea Div. of Computer Engineering Chonbuk National University Jeonju-si Jeollabuk-do Rep. of Korea

In this paper we propose a new method for the recognition of facial expressions from single image frame that uses combination of appearance and geometric features with support vector machines classification. In general, appearance features for the recognition of facial expressions are computed by div.ding face region into regular grid (holistic representation). But, in this paper we extracted region specific appearance features by div.ding whole face region into domain specific local regions. Geometric features are also extracted from corresponding domain specific regions. The results of facial expressions recognition using features from domain specific regions are also compared with the results obtained using holistic representation. The performance of the proposed facial expression recognition system has been validated on two public databases: CK+ and MUG facial expression dataset.

关键词： Iron Face recognition Support vector machines Image recognition Data mining

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Energy-efficient HTTP adaptive streaming for high-quality video over HetNets

Energy-efficient HTTP adaptive streaming for high-quality vi...

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IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： Yunmin Go Oh Chan Kwon Hwanjun Song Div. of IT Convergence Enaineerina POSTECH (Pohang University of Science and Technolozv) Pohanz Republic of Korea Samsung Electronics Suwon Gyeonggi-do KR Dep. of Computer Science Engineering POSTECH (Pohang University of Science and Technology) Pohang Republic of Korea

In this work, we propose an energy-efficient HTTP adaptive streaming for high-quality video over heterogeneous networks (HetNets). To support high-quality video and overcome the limitations of a single network, the proposed system downloads the video segments by concurrently using the HetNets. In the proposed system, the segment bitrate, number of requested segments, network sleep time, and size of requested data through each wireless network are determined adaptively to provide seamless high-quality video streaming in an energy and cost efficient way. The proposed system is fully implemented in an Android-based mobile device and tested in an actual wireless network environments.

关键词： Artificial neural networks Land mobile radio Business Energy consumption Adaptive systems Heterogeneous networks Energy efficiency

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2014 Conference on Research in Adaptive and Convergent Systems, RACS 2014

作者： Kim, TaeGuen Park, Jung Bin Cho, In Gyeom Im, Eul Gyu Kang, Boojoong Kang, SooYong Dept. of Computer and Software Hanyang University Seoul Korea Republic of Div. of Computer Science and Engineering Hanyang University Seoul Korea Republic of Institute of Electronics Communications and Information Technology Queen's University of Belfast Belfast United Kingdom

ISBN: (纸本)9781450330602

The number of malware has sharply increased over years, and it caused various damages on computing systems and data. In this paper, we propose techniques to detect malware variants. Malware authors usually reuse malware modules when they generate new malware or malware variants. Therefore, malware variants have common code for some functions in their binary files. We focused on this common code in this research, and proposed the techniques to detect malware variants through similarity calculation of user-defined function. Since many malware variants evade malware detection system by transforming their static signatures, to cope with this problem, we applied pattern matching algorithms for DNA variations in Bioinformatics to similarity calculation of malware binary files. Since the pattern matching algorithm we used provides the local alignment function, small modification of functions can be overcome. Experimental results show that our proposed method can detect malware similarity and it is more resilient than other methods. © 2014 ACM.

关键词： Malware

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Omnidirectional horizontally-polarized cylindrical microstrip antenna with two parasitic patches

Omnidirectional horizontally-polarized cylindrical microstri...

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Antennas and Propagation Society International Symposium

作者： Alexander Ye. Svezhentsev Ping Jack Soh Sen Yan Vladimir Volskiy Guy A. E. Vandenbosch Dept. of Diffraction theory and Diffractional Electronics IRE of NASU Kharkov Ukraine Div. ESAT-TELEMIC Leuven Belgium Sch. of Computer & Communication Engineering Universiti Malaysia Perlis Perlis Malaysia

In this paper a conformal cylindrical microstrip antenna (CMA) with an omnidirectional radiation is proposed. The antenna consists of three main components: a probe-fed main patch and two parasitic patches, placed conformally on a cylindrical structure. This cylindrical structure is sized to be about the size of a typical human waist, and was designed in the form of a belt for horizontally-polarized applications. The overall structure was simulated using CST Microwave Studio. Results indicated a satisfactory performance with 1.46 % bandwidth, and an omnidirectional pattern at the desired frequency.

关键词： Microstrip antennas Microstrip Microwave antennas Antenna radiation patterns Belts

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Evaluation of ultrasonic vibration energy for copper-to-copper bonding by flip-chip bonding technology

Evaluation of ultrasonic vibration energy for copper-to-copp...

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International Conference on electronics Packaging

作者： Yoshiyuki Arai Yoshinori Miyamoto Masatsugu Nimura Hajime Tomokage Research and Development Div. Toray Engineering Co.Ltd. Department of Electronics Engineering and Computer Science Fukuoka University

ISBN: (纸本)9781479933679

The ultrasonic vibration energy for Cu-Cu bonding by flip-chip bonding technology was evaluated in ambient air. Transmissibility of ultrasonic vibration is assumed to be different in bump structure with height or low stiffness. Therefore, we investigated the bonding strength of Cu bump with the different aspect ratio (bump height: 5 μm, 20 μm, and 40 μm). As a result, the Cu bumps with 20 μm height were properly bonded with sufficient bonding strength, compared with the others. In addition, there were no significant voids at Cu-Cu interface of well-bonded Cu bump.

关键词： Cu bump Cu-Cu bonding Low temperature bonding Ultrasonic vibration Flip-chip bonding

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Bosf: By-owner script filtering 3

Bosf: By-owner script filtering

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3rd International Conference on Digital Information Processing and Communications, ICDIPC 2013

作者： Kim, Jungtae Han, Kyoung-Soo Jiang, Biao Im, Eul Gyu Dept. of Electronics and Computer Engineering Hanyang University Seoul Korea Republic of Div. of Computer Science and Engineering Hanyang University Seoul Korea Republic of

Cross-Site Scripting (XSS) attacks are one of the most prevalent security threats all over the world. Although various defense methods have been proposed, most of them lack usability. Motivated by this reason, we present a location-based solution, called By-Owner Script Filtering (BOSF), which determines whether a script on a webpage can be executed or not using either the rules defined in the webpage or the information fetched from our database based on the ownership. BOSF is effective against various XSS attacks with minimal performance overheads, and more importantly, it places little requirements on developers and users. © 2013 SDIWC.

关键词： Websites

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