• Title/Summary/Keyword: Tablet-PCs

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The DRAM Effects on The Performance of Multicore Processors (멀티코어 프로세서의 성능에 대한 DRAM의 영향)

  • Lee, Jongbok
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.17 no.3
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    • pp.203-208
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    • 2017
  • Recently, the importance of DRAM is very significant in multicore processors which are widely used in computers, laptops, tablet PCs, and mobile devices. To keep up with this, both industry and academia have actively studied various types of future DRAMs. Therefore, accurate DRAM model is requisite when evaluating the multicore processor performance. In this paper, a multicore processor trace-driven simulator which can couple with the cycle-accurate DRAM simulator has been developed. Using SPEC 2000 benchmarks as input, the effect of cycle-accurate DDR3 model on the multicore processor performance has been evaluated.

Development of a Hybrid Recognition System Using Biometrics to Manage Smart Devices based on Internet of Things

  • Ban, Ilhak;Jo, Seonghun;Park, Haneum;Um, Junho;Kim, Se-Jin
    • Journal of Integrative Natural Science
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    • v.11 no.3
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    • pp.148-153
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    • 2018
  • In this paper, we propose a hybrid-recognition system to obtain the state information and control the Internet of Things (IoT) based smart devices using two recognitions. First, we use a facial recognition for checking the owner of the mobile devices, i.e., smartphones, tablet PCs, and so on, and obtaining the state information of the IoT based smart devices, i.e., smart cars, smart appliance, and so on, and then we use a fingerprint recognition to control them. Further, in the conventional system, the message of the state and control information between the mobile devices and smart devices is only exchanged through the cellar mobile network. Thus, we also propose a direct communication to reduce the total transmission time. In addition, we develop a testbed of the proposed system using smartphones, desktop computers, and Arduino vehicle as one of the smart devices. We evaluate the total transmission time between the conventional and direct communications and show that the direct communication with the proposed system has better performance.

A Study on the Production Process Management Support System for Smart Shipyard Based on Mobile (모바일 기반 스마트 조선소 생산 공정관리 지원 시스템에 관한 연구)

  • Park, Ju-Yong;Oh, Hyoung-Seok;Lee, Dong-Kun
    • Journal of Welding and Joining
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    • v.32 no.5
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    • pp.58-64
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    • 2014
  • The shipbuilding industry is facing the various problems of less demand and oversupply owing to the global economic crisis and the increase in shipbuilding countries. Shipyards of the industry are making effort to strengthen their ability to handle the crisis via a smartwork technology for flexible working environment. In this study, we developed a smartwork system that manages the information in shipbuilding process with mobile devices such as smart phones and tablet PCs. To successfully apply the developed smartwork system to shipyards, we analyzed several best practices and management tasks of the shipbuilding processes. The developed system was designed by CBD approach that is a branch of service-oriented software engineering for reusability and flexibility on the system. As it is designed considering the flexible working environment, it supports to increase their productivity by reducing the time required to carry out tasks and by increasing the mobility required to manage work performance in field of shipyards.

Evolution of Integrated Management Systems for Smart Library

  • Min, Byung-Won;Oh, Yong-Sun
    • International Journal of Contents
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    • v.8 no.4
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    • pp.12-20
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    • 2012
  • For a library to be able provide information services and fulfill its function as a knowledge convergence center capable of responding to various information demands, the development of next-generation information systems based on the latest information and communication technology is needed. The development of mobile information services using portable devices such smart phones and tablet PCs and information systems which incorporate the concepts of cloud computing, SaaS (Software as a Service), annotation and Library2.0 is also required. This paper describes a library information system that utilizes collective intelligence and cloud computing. The information system developed for this study adopts the SaaS-based cloud computing service concept to cope with the shift in the mobile service paradigm in libraries and the explosion of electronic data. The strengths of such a conceptual model include the sharing of resources, support of multi-tenants, and the configuration and support of metadata. The user services are provided in the form of software on-demand. To test the performance of the developed system, the efficiency analysis and TTA certification test were conducted. The results of performance tests, It is encouraging that, at least up to 100MB, the job time is approximately linear and with only a moderate overhead of less than one second. The system also passed the level-3 or higher criteria in the certification test, which includes the SaaS maturity, performance and application program functions.

An Efficient Feature Point Detection for Interactive Pen-Input Display Applications (인터액티브 펜-입력 디스플레이 애플리케이션을 위한 효과적인 특징점 추출법)

  • Kim Dae-Hyun;Kim Myoung-Jun
    • Journal of KIISE:Computer Systems and Theory
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    • v.32 no.11_12
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    • pp.705-716
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    • 2005
  • There exist many feature point detection algorithms that developed in pattern recognition research . However, interactive applications for the pen-input displays such as Tablet PCs and LCD tablets have set different goals; reliable segmentation for different drawing styles and real-time on-the-fly fieature point defection. This paper presents a curvature estimation method crucial for segmenting freeHand pen input. It considers only local shape descriptors, thus, peforming a novel curvature estimation on-the-fly while drawing on a pen-input display This has been used for pen marking recognition to build a 3D sketch-based modeling application.

A Study on Development of Quality Standards of Educational Smart Contents

  • Jun, Woochun;Hong, Suk-Ki
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.8 no.6
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    • pp.2152-2170
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    • 2014
  • With advances in smart and ICT(information and communication technology) technologies, our life style has been changing dramatically. Now everybody can enjoy the benefits of such technologies in every aspect of his/her daily life. Currently more and more people are trying to have smart devices such as smart phones and tablet PCs so that smart devices become the bare necessities. New smart technologies have created a new concept called smart learning in education area. As educational smart contents become popular, we need quality standards for the contents. Those standards are essential for evaluating the smart contents and suggesting guidance for future smart contents production. Although there are some standards for the existing e-learning environments, to our best knowledge, there are no standards for educational smart contents in the literature. The purpose of this paper is to develop quality standards for educational smart contents. The proposed quality standards are based on the existing quality standards in e-learning environments and include some characteristics of smart learning. For development of quality standards, wide experts group from academy and industry are selected and surveyed. Their responses are analyzed based on thorough statistical analysis so that final quality standards for educational smart contents are developed.

A Study on the Quality Management System for Smart Shipyard Based on Mobile (모바일 기반 스마트 조선소 품질관리 시스템에 관한 연구)

  • Park, Ju-Yong;Moon, Se-Young;Ryu, Cheol-Ho;Hwang, In-Hyuck
    • Journal of Welding and Joining
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    • v.31 no.4
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    • pp.34-41
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    • 2013
  • In the smart life era where the majority of economically active population uses mobile devices, smart devices have formed a new service market. In this study, we developed a shipyard quality management application using mobile devices such as smart phones and tablet PCs. For this purpose, the problems were derived through the analysis of the quality management work on shipyard and the considerations were extracted to build a smart work environment by analyzing the case studies of smart work in other industrial fields. Among the shipyard quality management work, functions thought to be highly utilized when converted to a mobile system has been developed as a mobile application. The application was developed by applying an object-oriented component-based development (ooCBD) methodology, and is expected to improve the user experience and the efficiency of quality management operations in shipyard.

Development of the OSGi-based USB Terminal System for U-learning (U-learning을 위한 OSGi에 기반한 USB 단말기 시스템 개발)

  • Kim, Hee-Sun;Kim, Jee-Hong;Lee, Chang-Goo
    • Journal of Institute of Control, Robotics and Systems
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    • v.13 no.12
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    • pp.1252-1256
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    • 2007
  • U-learning (ubiquitous learning) systems, which deliver learning materials anytime and anywhere, allow learners to watch live lectures on PDAs, tablet PCs and notebook computers via broadband and wireless Internet. These systems have various problems; first, terminal devices are expensive, and it is difficult to maintain their efficiencies. Secondly, Internet does not guarantee quality of service (QoS), and in general it does not provide real-time services. Finally, the security of these systems is weaker in a local network than in an external network. The USB-based terminal system based on the OSGi service platform was designed as a ubiquitous system, in order to solve those problems. The USB terminals, used in this system, are inexpensive, and it is easy to maintain their performances. Also, this system solves the problems of security in a local network and provides guaranteed QoS. To accomplish this, the number of USB terminals connected to the system has to be limited according to the formula proposed in our paper. This system uses the OSGi specification as a middleware. It supports the discovery mechanism of the USB terminals, maintenance and administration of the system. Finally, this paper shows a driver's license testing system as an example u-learning application1.

Location-Based Device Identification Algorithm for Device-to-Device Communication (기기간 직접통신을 위한 위치 정보 기반의 기기 식별 방법)

  • Park, Eunhye;Kang, Joonhyuk
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.38A no.10
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    • pp.893-897
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    • 2013
  • Recently the interest on device-to-device (D2D) communication has been increased due to the growing popularization of smart phones and tablet PCs. However, existing device identification mechanisms of D2D communication provide a text-based long list of possible devices, which leads the users to avoid to use D2D techniques. In this paper, we propose a location-based device identification technique for D2D communication. This paper describes the algorithm, analyzes its accuracy using analytical models, and verifies the results using computer simulations. The proposed algorithm is more user-friendly and intuitive way than existing D2D techniques.

A GPU scheduling framework for applications based on dataflow specification (데이터 플로우 기반 응용들을 위한 GPU 스케줄링 프레임워크)

  • Lee, Yongbin;Kim, Sungchan
    • Journal of Korea Multimedia Society
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    • v.17 no.10
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    • pp.1189-1197
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    • 2014
  • Recently, general purpose graphic processing units(GPUs) are being widely used in mobile embedded systems such as smart phone and tablet PCs. Because of architectural limitations of mobile GPGPUs, only a single program is allowed to occupy a GPU at a time in a non-preemptive way. As a result, it is difficult to meet performance requirements of applications such as frame rate or response time if applications running on a GPU are not scheduled properly. To tackle this difficulty, we propose to specify applications using synchronous data flow model of computation such that applications are formed with edges and nodes. Then nodes of applications are scheduled onto a GPU unlike conventional scheduling an application as a whole. This approach allows applications to share a GPU at a finer granularity, node (or task)-level, providing several benefits such as eliminating need for manually partitioning applications and better GPU utilization. Furthermore, any scheduling policy can be applied in response to the characteristics of applications.