• 한국게임학회 논문지
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• 제14권1호
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• pp.69-80
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• 2014

본 연구는 셧다운제에 대한 일반인 및 게이머들의 인식 변화를 살펴보았다. 셧다운제가 실시된 2011년 11월과 시행 후 1년 후인 2012년 11월, 시행 후 2년 후인 2013년 11월에 같은 문항으로 설문조사를 실시하여, 이 3년간 게이머 및 일반인들의 셧다운제에 대한 인식에 변화가 존재하는지를 분석하였다. 3년 동안 셧다운제에 대한 인식 변화를 살펴본 결과, 셧다운제에 대한 인지 정도는 일반인과 게이머 모두 증가하였고, 일반인과 게이머 모두 셧다운제에 대하여 찬성하는 정도는 감소되었다. 일반인들의 경우 2011년에서 2012년 사이에는 셧다운제에 대한 평가에 큰 변화가 없었지만, 2013년에는 셧다운제에 대한 평가가 부정적으로 변화하였다. 게이머들은 2011년부터 2013년까지 계속해서 셧다운제에 대한 부정적인 인식이 강화되고 있다. 셧다운제 초기에는 게이머들은 셧다운제를 부정적으로 보았지만 일반인들은 셧다운제에 대해 긍정적인 시각을 지니고 있었다. 하지만 2013년에는 일반인들도 셧다운제에 대한 부정적인 견해가 증가하고 있는바, 이러한 결과는 셧다운제를 계속 유지해나가야 할 것인가에 대한 정책 판단과 관련하여 많은 시사점을 줄 수 있다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2007년도 추계학술대회 논문집
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• pp.192-192
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• 2007

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2008년도 춘계학술대회 논문집
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• pp.29-32
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• 2008

Testing was conducted to determine the performance of a residential fuel cell system when subjected to DSS and WSS operation, especially for start-up and shut-down characteristics. In terms of start-up time, it took about 70min to start output power generation and stably to reach 1kW at cold start. Measurement of the characteristics of heat and power generation were carried out at start-up and shut-down time. Fuel gas is used for heating both reformer and stack from start-up to the beginning of power generation. In terms of start-up and shut-down characteristics, it was important to control the reformer temperature precisely. The average output water temperature during the rated output operation(960W) was $63.2^{\circ}C$ constantly. The results of the investigation are being used to develop a new test protocols for residential fuel cell system.

• 한국IT서비스학회지
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• 제11권2호
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• pp.93-106
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• 2012

Recently, a Game Shut-down policy, partially limiting the time for the use of online game service, has been implemented in order to protect the youth from the excessive use of games by limiting their access to games in the late hours, based on the serious side effects of online games on the youth. However, the effectiveness of a Game Shut-down policy becomes a social issue. Thus, this study aims to investigate the alternative policies through the levels of the communications suggested by the theory of excellence, for the successful implementation of the policy. As a result of the study, the government and students, the recipient of those policies, need to strengthen their two-way communication in respect of the Game Shut-down policy, breaking from the existing views on the perception. The problem is that the current government's way of the communication for the Game Shut-down policy is one-way and it is aiming at achieving the objectives only. Thus, the communication in this manner will cause the side effect. 'the opportunistic violation of the system in the future', even if the students seemingly accept the system. Two-way communication will enhance the motivation for the voluntary acceptance of the system and lower the motivation for the opportunistic violation of the system. Thus, the government needs to strengthen two-way communication in the future.

• 한국게임학회 논문지
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• 제13권4호
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• pp.61-72
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• 2013

본 연구는 논란 속에 도입된 인터넷 셧다운제에 대한 태도에 미치는 요인들을 살펴보고자했다. 이에 게임 이용 빈도, 뉴스 이용정도, 게임의 효과에 대한 평가, 게임의 부정적 효과에 대한 원인 등이 셧다운제에 대한 동의에 미치는 영향을 살펴보았다. 셧다운제가 도입된 직후에 서울시민 496명에 대한 1대1 면접조사를 실시하여 온라인게임 규제제도인 셧다운제에 대한 태도를 살펴본 결과, 뉴스미디어를 더 많이 이용할수록, 게임의 부정적 영향을 더 많이 인식할수록, 그리고 게임의 부정적인 영향에 대한 책임이 정부에 있다고 인식할수록 셧다운제를 더 찬성하는 것으로 나타났다. 귀인이론을 중심으로 결과에 대한 논의와 연구의 함의를 제시했다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2006년도 전력전자학술대회 논문집
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• pp.254-256
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• 2006

A Novel way to support typical Thermal Shut Down(TSD) circuit is proposed. In power ICs, on-time or on-duration is the key factor to anticipate an abrupt increase of internal temperature. Such an abrupt raise of the temperature can cause TSD circuit cannot protect on proper time due to the temperature detection delay come from the physical distance or the imperfect coupling between heat sources and detector. The proposed circuit checks the duty ratio touched their maximum or not in every cycle. Once duty ratio touches the maximum duty, new circuit generates the warning signal to the TSD circuit and lowers pre-determined temperature for shut down to compensate the detection delay. The novel circuit will be analyzed to the transistor level and checked the validity by simulation.

• 대한기계학회논문집B
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• 제22권3호
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• pp.408-415
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• 1998

This study presents experimental results on the shut-down and start-up characteristics of a residential split-system air-conditioner with capillary tube, using R410A as a R22 alternative refrigerant. During shut-down, the transient characteristics are evaluated by measuring the high side and low side pressures and temperatures of the system. The dynamic behavior of the system after start-up is also investigated at the high temperature cooling test condition. All experiments are performed in psychrometric calorimeter. The cooling capacity, power consumption, dehumidification capacity and cycle characteristics after start-up are analyzed.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 V
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• pp.2927-2930
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• 2003

This paper has been studied the ballast for multiple lamps. Many fluorescent lamps are demanded in where industrial buildings and public buildings. Using the proposed ballast for multiple lamps, we can decrease the cost and the space for installing. Also in the paper, the protection circuit is introduced for over voltage and current. The general problem of the ballast for multiple lamps is to shut down the ballast circuit in the ease of one abnormal lamp. But the proposed method is not shut down all the circuit even if one lamp is in an abnormal condition.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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• pp.273-276
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• 2007

A natural graphite heat spreader increased the upper operating temperature limit of a CCFL backlit LCD television. A 0-80W heat source was used to simulate additional electronics. Without the heat spreader, internal circuitry shut-down at ${\sim}30;$ no shut-down occurred above 80W with a heat spreader. Additionally, brightness, temperature uniformity, and operating ranges were improved, verified by environmental chamber performance testing at various ambient conditions.

• 전기의세계
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• 제14권5호
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• pp.1-7
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• 1965

Using "Yonsei$^{101}$ Analog Computer" the poisoning of the Xenon$^{135}$ in a thermal homogeneous nuclear reactor is analyzed. The simulator is constituted of high gain D.C. operational amplifiers and operational impedances. During the nuclear reactor operation, the Xenon poisoning increases against time until the equilibrium state reaches. After the reactor shut-down, it increases remarkably until the maximum value and then decreases. The simulated curves agree with theoretical values satisfactorily. The accuracy of the analog computer solution is 0.4387 per cent during the nuclear reactor operation and 6.7 per cent after the nuclear reactor shut-down respectively.pectively.