• KIPS Transactions on Computer and Communication Systems
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• v.6 no.7
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• pp.307-314
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• 2017

Stick-PC is small and portable, So it can be used like a desktop if you connect it to a display device such as a monitor or TV anytime and anywhere. Accordingly, Stick-PC can related to various crimes, and various evidence may remain. Stick-PC uses the same Windows version of the operating system as the regular Desktop, the artifacts to be analyzed are the same. However, unlike the Desktop, it can be used as a meaningful information for forensic investigation if it is possible to identify the actual user and trace the usage by finding the traces of peripheral devices before analyzing the system due to the mobility. In this paper, We presents a method of collecting images using Bootable OS, which is one of the image collection methods of Stick-PC. In addition, we show how to analyze the trace of peripheral connection and network connection trace such as Display, Bluetooth through the registry and event log, and suggest the application method from the forensic point of view through experimental scenario.

• Journal of Korea Game Society
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• v.7 no.1
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• pp.53-58
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• 2007

In this paper, a game control system was constructed, in which a game was controlled by a remote joystick connected with a power line by the power line communication (PLC) method. The structure of the system was that the connection line between the remote joystick and a PC, and the PC and an audio play device was the home power line. And, the communication data rate between them was 2400 bps. The Polling communication technique was used for the PC to read the joystick's control commands, and to send some acoustic informations to the receiver PLC device. A game was programmed, in which an aircraft was moved according to the joystick's left, right, up, and, down direction, and was shooting its missile after the joystick's shooting button was pushed. The communication delay of about 100 msec between them didn't cause any big problem in playing the game.

• Journal of Korean Society of Environmental Engineers
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• v.39 no.12
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• pp.698-705
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• 2017

Environmental impact of a mobile phone charger containing recycled plastic was quantified using LCA and the environmental benefits from the use of recycled and virgin plastic were compared. The assessment considers potential environmental impacts across the whole life cycle of the charger including; pre-manufacturing; manufacturing; distribution; product use; and end-of-life stages and quantified six environmental impact categories; Abiotic depletion; Acidification; Eutrophication; Global warming; Ozone layer depletion; and Photochemical oxidants creation. The study showed that the environmental impacts of the use stage accounted for 94.4% and 70% in the resource depletion and global warming impact categories, respectively, and the environmental impacts of the pre - manufacturing stage accounted for more than 98% in the other impact categories. The main cause of the environmental impacts in the use stage was electricity consumed by the charger. The main cause in the pre-manufacturing stage was PBA (Printed Board Assembly) and external case manufacturing. In order to quantify the environmental benefits of recycled PC (Polycarbonate) in the exterior case, the environmental impacts of 1 kg production of recycled PC and virgin PC were evaluated. The environmental impact on the abiotic depletion of the recycled PC is estimated to be 30% compared to the virgin PC, and the impacts on the other impact categories of the recycled PC were less than 5% of the virgin plastic. Sensitivity analysis was performed for 12 items including site data and assumptions made. The sensitivity of each item was less than 10%. The results of this study confirm that designing compact and light PBA, improving charging efficiency, and use of recycled plastic are important design factors to reduce the environmental impact of a charger.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2008.10a
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• pp.9-12
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• 2008

현재 게임 역사를 보면 조이스틱의 인기가 눈에 띄게 떨어졌음을 알 수 있다. 비행 시뮬레이션 장르의 게임의 수가 적어지고 있기 때문이다. 조이스틱들은 일인용 슈팅 게임을 지원하지만 마우스나 컴퓨터 키보드에 견주어 보면 정확성이 떨어진다. 최근에 나온 소수의 게임들은 콘솔 PC와 연계가 되지만 PC 사용자들에게 자동 발사 기능을 사용할 것을 요구함으로써 사용자들에게 불편을 주었다. 본 연구는 기존의 게임 컨트롤러 구성요소를 분석하고, 아동의 조작능력과 신체발달과의 상호관계를 통해 아동의 놀이 발달기별 특징에 적합한 게임 컨트롤러를 개발한다는 것을 목적으로 한다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.10a
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• pp.62-62
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• 2003

• The Journal of the Acoustical Society of Korea
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• v.43 no.1
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• pp.49-59
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• 2024

Recently, the electric vehicle market is gradually growing due to strengthened environmental regulations and high oil prices. also, in internal combustion engine vehicles, the sensitivity of Buzz, Squeak, Rattle (BSR) noise is increasing as engine Noise, Vibration, and Harshness (NVH)-related noise is reduced and technology for shielding noise coming from outside is developed. In this study, the stick-slip noise that occurs in Panoramic Curved Display (PCD) of automobile was analyzed for the correlation between the surface energy of polymer plastic and the polar component. For polar polymer materials, Acrylonitrile Butadiene Styrene (ABS) and PolyCarbonate-Acrylonitrile Butadiene Styrene (PC-ABS), compound materials were fabricated and evaluated. As a result, when the polar component of the polymer plastic was 3.86 mN/m or higher, stick-slip motion occurred, and as the absolute transition slope increased in the friction behavior over time, the possibility of stick-slip noise increased and the value of the friction coefficient The greater the difference, the greater the strength of the stick-slip noise.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.76-78
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• 2004

본 논문에서는 태스크 스케줄링 기법을 PC 클러스터에 구현하여 스케줄링 기법의 성능을 분석한다. 구현된 스케줄링 기법은 태스크 그래프를 입력으로 받아 PC 클러스터로 스케줄링하며, 휴리스틱을 사용하여 태스크를 선택적으로 중복함으로써 병렬연산시간을 단축한다. 실험을 한 결과 본 논문에서 소개한 스케줄링 기법이 비교 기법보다 병렬연산시간 측면에서 성능이 우수함이 확인하였다.

• The KIPS Transactions:PartA
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• v.11A no.7 s.91
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• pp.521-528
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• 2004

In this-paper, we propose a new task scheduling scheme for bus-based cluster architectures and analyze performance of the scheduling scheme which has been implemented in a PC cluster. The implemented scheme schedules the tasks of a task graph to the processors of a PC cluster, and it reduces parallel execution time by selectively duplicating critical tasks using heuristic. Experimental results show that the proposed scheduling scheme produces better parallel execution time than the other scheduling scheme.

• Journal of Adhesion and Interface
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• v.3 no.4
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• pp.10-18
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• 2002

Modern plastics are of great importance in many practical applications and their performance can be enhanced by surface modification to improve their hardness, wear and chemical resistance. The object of this study is invention of functional hardening coating materials which are applied to plastic, such as polycarbonate, polymethylmethacylate and acrylonitrilebutadienestyrene. In order to invention of hardening coating materials, we synthesized new silicone acrylate oligomer and prepared coating films containing silicone acrylate oligomer (SAOE) on PC substrate. The curing of coatings is performed by UV-radiation. As results of experiments, The properties of coating films which are contained SAOE is greatly improved in comparison with coating films non-contained SAOE. Especially, when 1 wt% SAOE was introduced into the coating formulation, the UV hardening coatings obtained showed the best surface hardness and gloss.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.11 no.1
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• pp.47-52
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• 2005

The wasted plastic PC/ABS retainer, polyurethane foam (PUF) and vinyl (PVC) skin. In order to investigate the recycling process, the multi-layered instrument panel Each of materials separated was shredded and crushed to create many small particles respectively. The separation of the foam and skin and retainer of zigzagged air blower. Pilot tests performed at the equipment yielded 98.8% by weight of the available PVC and 99.3% by weight of the available PC/ABS respectively. Secondly, the thermal stabilizer and the compatabilizer have been used to improve the physical propertied of recycled materials.. The properties of recycled PVC materials resulted in about 50% compared to that of virgin materials after treatment by Pb-St thermal stabilizer. In addition, the properties of recycled PC/ABS materials was also obtained about 80% compared to that of virgn materials after treatment by PMMA compatabilizer.