• 전력전자학회:학술대회논문집
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• 전력전자학회 2012년도 전력전자학술대회 논문집
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• pp.177-178
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• 2012

In spite of its compactness and lightness, conventioan boost converter is not preferred for the charge applications. In this paper, a non-isolated boost converter topology for the Li-Ion battery suitable for fuel cell powered laptop computer is proposed and analyzed. The proposed converter has an additional inductor at the output to reduce the output ripple current and voltage. This feature makes it suitable for the charger application by eliminating the disadvantages of the conventional non-isolated boost converter mentioned above.

• Journal of electromagnetic engineering and science
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• 제4권3호
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• pp.124-127
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• 2004

A novel printed inverted-F antenna for dual-band WLAN is presented. The proposed design is based on the folded quarter-wave antennas, which have a conductor plate having two arms. An extremely thin prototype antenna is fabricated according to the simulation result. The obtained antenna can perform in IEEE802.11a, b(2.4～2.484 GHz and 5.15～5.35 GHz bands) and be adopted for laptop applications. All the measurements are performed in the actual test fixture.

• 한국전기화학회:학술대회논문집
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• 한국전기화학회 2003년도 연료전지심포지움 2003논문집
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• pp.151-154
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• 2003

The lap-top with a integrated fuel cell system presented here proves that these solutions have a great potential. Though, there are things that have to be improved before they are introduced to the marked. In this system, heat and water management as well as dead end operation are critical issues which must be directly addressed in further research. Both modified stack design and other new cooling techniques are possible ways to continue the work.

• 한국콘텐츠학회논문지
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• 제9권6호
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• pp.134-144
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• 2009

본 연구는 노트북 구매에 대한 소비자들의 의도를 이해하기 위하여 연구되었다. 본 논문은 Ajzen(1991)의 계획된 행동이론(TPB : Theory of Planned Behavior)을 서로 다른 라이프스타일에 따라 군집화 된 소비자들의 노트북 구매에 대한 의도를 비교하는데 적용하였다. 먼저 요인분석과 군집분석을 실시하여 소비자들을 4개 특성 그룹으로 나눈 다음 4개 특성 그룹 각각의 태도, 주관적 규범, 지각된 행위통제와 행동의도를 비교, 분석하였다. 본 연구의 목적을 달성하기 위해 주변에 노트북 구매, 사용경험이 있는 참여자로 부터 240부의 표본을 표집 하였으며, 이중 불성실한 응답을 한 17부를 제외한 223부의 자료를 연구에서 사용하였다. 회수된 자료는 SPSS 15.0과 AMOS 7.0 프로그램을 이용하여 요인분석, K-Means분석, 상관관계분석, 교차분석, 구조방정식 모형분석을 통해 소비자들의 노트북 구매의도를 알아보았다.

• 기술혁신연구
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• 제14권2호
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• pp.29-48
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• 2006

This paper analyzes organizational behavior of an established firm when disruptive innovation, a change in product architecture, occurs on a previous product. For the analysis, the paper analyzes and compares the behavior of an established fm through product trajectories between NEC (an established firm) and Toshiba (a new entrance) in the Japanese laptop computers industry. An established firm that has developed and produced a previous product is difficult in adapting to a disruptive innovation due to accumulated immense knowledge through a previous product. By using regression model in the product trajectory analysis, the paper analyzes the behavior of established firms. Product trajectory means a pattern of product strategy shown in a series of products. Two facts found in the paper are as follows. First, though NEC was able to develop a laptop computer at the same time with Toshiba, it was restricted by the resources of a previous product in the early stage. Second, possibility of teaming trap in the adapting process was found. The paper found the risk that too much commitment in one evolution stage would prohibit the adapting behavior in the next evolution stage.

• 한국항해항만학회지
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• 제36권7호
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• pp.571-575
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• 2012

Berthing and unberthing maneuver is essential work for marine pilots and securing the safety against risks during the maneuver is more important than anything else. Moreover, the maneuvering environment in ports and harbors has changed rapidly and got worse due to development of a new port, the advent of a new type or large-sized ship, and the rapid increase in harbor traffic. As one of measures taken to cope with such changes in the maneuvering environment and for each pilot to improve his own maneuvering ability, this paper developed laptop-based ship-handling simulator which is readily available anytime and anywhere. This paper is to develop a conning display for ship's maneuvering and electronic chart based display widely used nowadays to represent a model ship's movement. The displays were arranged appropriately considering pilot age, easy handling by mouse, using a maximum screen, proper arrangement of rudder, engine, thruster, tug etc and representation of information. Up to now thirteen (13) model ships were developed based on real-ship, whose mathematical model is Japanese MMG & pilots' low speed maneuver.

• 유통과학연구
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• 제21권4호
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• pp.35-45
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• 2023

Purpose: The study's objective was to examine the impact of brand personality dimensions on consumer behavior for laptop purchases in Nepal. Research Materials and Methods: The study included descriptive and explanatory research designs. A structured questionnaire with a purposive sampling method was employed to gather the necessary information for the study. The survey data were analyzed using a quantitative approach. The study used descriptive statistics to characterize the response conditions. Correlation analysis was used to investigate the relationship between brand personality dimensions and consumer behavior. Regression path analysis was employed to identify the effect of brand personality dimensions and consumer behavior. Results: The result of regression path analysis showed that the three dimensions - competency, ruggedness, and sophistication, have a significant effect on consumer behavior, and the two dimensions- sincerity and excitement do not have a substantial impact on consumer behavior in laptop buying in Nepal. Conclusions and Implications: Such findings can serve as pioneering empirical evidence and provide a framework for marketers and future studies in various scenarios. The study's findings can help marketing managers in handling information management. Manufacturers, wholesalers, and retailers can also use the results in formulating marketing strategies, and marketers need to be aware of such considerations for influencing consumer behavior.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.1944-1949
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• 1991

In coming years fuzzy control techniques will be increasingly applied to plants in such fields as industry and public works. For this reason, it is extremely important that a high-quality support tool for systems configuration be developed. In this paper we will describe a comprehensive, user-friendly design tool for configuration of fuzzy control systems, called FZtool, that runs on a compact and cost-effective laptop computer.

• 한국기계가공학회지
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• 제10권3호
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• pp.53-59
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• 2011

In this study, a two-phase closed loop cooling system is desinged and tested for a laptop computer using a FC-72. The cooling system is characterized by a parametric study which determines the effects of existence of a boiling enhancement microstructure, initial system pressure, volume fill ratio of coolant and inclination angle of condenser on the thermal performance of the closed loop. Experimental data show the optium condition when the volume ratio of working fluid is 70%, the pump flowing is 6ml/min, and the inclination angle of condenser is $0^{\circ}$. This research shows the maximum values which can dissipate 33W of chip power with a chip temperature maintained at $95^{\circ}C$.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2011년도 추계학술대회
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• pp.99-101
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• 2011

접이안 조선은 도선사들의 필수 업무에 해당하는 것이며 이에 대한 안전성 확보는 무엇보다 중요하다. 새로운 항만의 개발, 새로운 선형 선박의 등장 등으로 도선사가 접이안 하는 항만은 계속 그리고 빠르게 변화하고 있다. 이런 변화에 능동적으로 대처하여 도선사 개개인의 선박조종 능력을 함양할 수 있는 방법의 하나로서 도선사들이 쉽게 어디서나 접할 수 있도록 랩탑(laptop) 기반의 선박조종 시뮬레이터를 개발하였다. 도선사들이 다루는 선박에서는 통상의 정속의 항행속력이 아닌 저속에서의 선박 조종이 주가 되므로 이에 대하여 특별히 고려하여 선박모델을 개발하였다. 선박 텔러그래프의 해당 속력 및 그 속력에 도달하는 시간 등이 실선에 부합할 수 있도록 하였다. 선박은 일본의 MMG 모델을 기반으로 하였으며 실제 선박의 시운전 데이터를 참고하여 개발하였다. 실선박이 가진 시운전 자료는 공선의 경우가 많으므로 이에 대하여서는 각 도선사들의 자문을 받아 수정 보완하였다.