• 한국콘텐츠학회논문지
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• 제21권11호
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• pp.257-267
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• 2021

본 연구는 영화 시장 수준에서 개봉 전 시장의 기대 수준을 높이는데 지나치게 몰두하는 사전 마케팅이 갖는 위험성을 경고하고, 시장의 기대 불일치 수준이 낮을수록 이상적인 성과를 낼 수 있다는 실무적인 시사점을 제공한다. 본 연구의 핵심 개념은 개봉 전 기대수준과 개봉 후 만족은 각각의 영화 평점으로 측정하였고, 이의 차이를 기대불일치로 산정하였다. 흥행 성적은 영화의 매출액으로 측정하였다. 영화에 대한 온라인 구전을 개봉전과 개봉후로 구분하고 이에 대한 구전효과가 있는지를 검증하였다. 개봉 전 기대 수준을 높이는 데에는 스타 파워와 감독 파워, 전문가평점, 스크린수 중에서 전문가평점이 유의미한 영향력을 갖는 것을 나타났다. 개봉 전 기대수준은 개봉후 평점에 긍정적인 영향을 미치지만, 기대불일치 수준에는 부정적인 영향을 미치는 것으로 확인되었다. 또한 개봉 전 기대수준이 높을수록 기대불일치가 크다는 가설과 기대불일치가 높을수록 흥행수준에 부정적 영향을 미친다는 가설이 지지되면서 기존의 개인 수준에서의 기대불일치 이론을 시장 수준에서 적용가능함을 보여주고 있다. 따라서 개봉 전 기대수준을 높이는 마케팅 전략은 기대불일치를 크게 하여 최종적으로 영화 흥행에 부정적인 영향을 미치는 것을 확인하였다. 이는 영화와 같이 관여도가 낮거나 감성적인 상품을 대상으로 영화관련 실무자들에게 영화의 개봉전이나 개봉후 초기에 실시하는 마케팅에 대한 다양한 시사점을 제공하고 있다.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2005년도 추계학술발표회
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• pp.191-192
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• 2005

• Journal of Nutrition and Health
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• 제36권9호
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• pp.918-923
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• 2003

L-theanine Is an amino acid in green tea and has been known to decrease serotonin and increase norepinephrine in rat brains, and also reported to produce mental relaxation, lower blood pressure and improve learning ability in human beings. But, few studies on these effects for human beings have been conducted so far. This study was conducted to evaluate the effect of L-theanine on the release of brain alpha waves known to be related with mental relaxation and concentration. Twenty healthy male volunteers aged 18 to 30 years without any Physical and Psychological diseases were recruited through written advertisement. Alpha power values of EEG as a surrogate marker of mental relaxation and concentration were measured in frontal and occipital regions for 40 minutes after administration of four placebo or test tablets and 20 minute resting period. The same procedure crossed over at 7-day intervals. We analyzed average alpha power values in frontal and occipital regions at 10 minute intervals. Repeated ANOVA revealed that there were significant differences of occipital alpha power values between placebo and test groups with high anxiety (p < 0.05). The mean values at 20,30,40,50 and 60 minute intervals were 0.23, 024, 0.28, 0.25 and 0.34 in placebo, respectively and 0.23, 0.29, 0.40, 0.34, and 0.45 in test, respectively. But there were no significant differences of frontal and occipital alpha power values between placebo and test groups with low anxiety (p > 0.05) . The results of this study suggest that L-theanine containing tablets promote the release of alpha waves related to mental relaxation and concentration in young adult males.

• Journal of Radiation Protection and Research
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• 제26권3호
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• pp.291-298
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• 2001

The designed release rate of liquid effluents from radwaste treatment system should be calculated and evaluated during normal operation, including anticipated operational occurrence and be assured that the release concentration and off-site dose at unrestricted area do not exceed the limits of regulation. The expected annual release rate and off-site dose for the currently operating nuclear power plants in Korea had been calculated and evaluated using PWR-GALE and LADTAP-II which was based on USNRC Regulatory Guide 1.109. Recently, the MOST Notice 2001-2 related to release concentration and off-site dose at unrestricted area was revised to reflect the concept of ICRP-60. It is necessary for KORI 3&4 to re-calculate the release concentration and off-site dose and to compare these results with the limits of regulation. As the results of assessment, we confirmed that the release concentrations were less than its limits of MOST Notice 2001-2 and the off-site dose at unrestricted area using K-DOSE60 was 3.61E-03 mSv/yr to the age of five for the effective dose, and 4.10E-2 mSv/yr to thyroid of the age of five for the organ equivalent dose. We also confirmed the off-site dose was within the limits of MOST Notice 2001-2. Therefore, the release concentration and off-site dose re-evaluated at unrestricted area in KORI 3&4 were well below the regulation limits of MOST Notice 2001-2.

• 전기전자학회논문지
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• 제15권1호
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• pp.43-48
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• 2011

본 연구에서는 소프트웨어 제품을 개발하여 테스팅을 거친 후 사용자에게 인도하는 시기를 결정하는 방출문제에 대하여 연구되었다. 무한고장수를 가진 비동질적인 포아송 과정에 기초하고 수명분포는 최소 및 최대값을 적합 시키는데 효율성을 가진 극값 분포를 이용한 최적 방출시기에 관한 문제를 제시하여 소프트웨어 요구 신뢰도를 만족시키고 소프트웨어 개발 및 유지 총비용을 최소화 시키는 최적 소프트웨어 방출 정책에 대하여 논의 되었다. 본 논문의 수치적인 예에서는 고장 간격 시간 자료를 적용하여 기존의 로그 포아송 실행시간 모형과 로그 파우어 모형의 대안으로서 극값 분포모형이 또 하나의 대안이 될 수 있음을 입증하였다.

• Nuclear Engineering and Technology
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• 제53권3호
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• pp.812-824
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• 2021

In order to reduce risks from the Steam Generator Tube Rupture (SGTR) accident and to meet safety targets, various measures have been analyzed to minimize the amount of fission product (FP) release. In this paper, we propose an introduction of a Containment Filtered Venting System (CFVS) connected to the steam generator secondary side, which can reduce the amount of FP release while minimizing adverse effects identified in the previous studies. In order to compare the effect of new equipment with the existing strategy, accident simulations using MELCOR were performed. As a result of simulations, it is confirmed that CFVS operation lowers FP release into the environment, and the release fractions are lower (minimum 0.6% of the initial inventory for Cs) than that of the strategy which intends to depressurize the primary system directly (minimum 15.2% for Cs). The sensitivity analyses identify that refill of the CFVS vessel is a dominant contributor reducing the amount of FP released. As the new strategy has the possibility of hydrogen combustion and detonation in CFVS, the installation of an igniter inside the CFVS vessel may be considered in reducing such hydrogen risk.

• Nuclear Engineering and Technology
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• 제55권8호
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• pp.2977-2983
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• 2023

During normal operation, some parts of the fission product in the defective fuel rods can release into the primary loops in PWR and the escape rate coefficients are widely used to assess quantitatively the release behaviors of fission products in the industry. The escape rate coefficients have been standardized and have been validated by some drilling experiments before the 1970s. In the paper, the model to determine the escape rate coefficients of fission products has been established and the typical escape rate coefficients of noble gas and iodine have been deduced based on the measured radiochemical data in one operating PWR. The result shows that the apparent escape rate coefficients vary with the release-to-birth and decay constants for different fission products of the same element. In addition, it is found that the escape rate coefficients from the defective rod with large defects are much higher than the standard escape rate coefficients, i.e., averagely 4.4 times and 1.8 times for noble gas and iodine respectively. The enhanced release of fission products from the severe secondary hydriding of several defective fuel rods in one cycle may lead to the potential risk of the temporary shutdown of the operating reactors.

• 설비공학논문집
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• 제9권2호
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• pp.221-228
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• 1997

A strong combustion-driven sound from a surface burner made of a perforated metal fiber plate for premixed gas was investigated to clarify the physical mechanism of its generation. A simple model was developed for the acoustic power generation in terms of the heat transfer response function and the acoustic impedance of the burner. The acoustic impedance of the perforated metal fiber placed on the open exit was measured and the heat release response of the burner to the oscillating flow associated with the acoustic disturbance was expressed in terms of a response function. It was found that the power is generated by the heat release in response to the downstream particle velocity, in contrast to the upstream velocity in the case of the Rijke oscillation driven by a heater placed in the lower half of a columm with upstream flow. The measured frequencies of the oscillation were in agreement with the estimated resonance frequencies and their excitation was varied with the combustion conditions. For the same fuel rate, the excited frequency increases with the air ratio if it is low but decreases with the ratio if not so low. Such frequency characteristics were explained by assuming a heat release response function with a time constant and it was shown that the excited frequency decreases as the time constant increases.

• 동력기계공학회지
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• 제17권6호
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• pp.25-32
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• 2013

Biodiesel is technically competitive with it and offers technical advantages over conventional petroleum diesel fuel. Biodiesel is an environment friendly alternative liquid fuel that can be used in any diesel engine without modification. In this study, (dP/dCA)max and heat release, emission characteristics with different fuel injection timings are compared between diesel fuel and biodiesel in the D.I. diesel engine with T/C. The engine was operated at five different fuel injection timings from BTDC 6deg to 14deg at 2deg intervals and with four different loads at engine speed of 1800rpm. The experiments in a test engine showed that ranges between low and high of (dP/dCA)max got narrower, as the engine load increased, BD blend rate increased, and fuel injection timing was delayed. Cumulative heat release increased with the advanced fuel injection timing. NOX emissions decreased with the delays of fuel injection timing.

• 만화애니메이션 연구
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• 통권16호
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• pp.21-32
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• 2009

본 연구는 2003년부터 2008년까지 한국에서 개봉된 애니메이션 영화들을 분석대상으로 하여 해당 영화의 흥행성과에 영향을 미치는 요인들을 고찰하고자 한다. 종속변수는 전국 총관객수이다. 총관객수에 영향을 미치는 요인이 무엇인지 고찰하기 위해 독립변인은 배급사 파워, 개봉스크린 규모, 개봉시점, 속편형태, 수상실적, 영화의 국적 및 등급, 그리고 전문가 평점과 네티즌의 온라인평점으로 설정되었다. 회귀분석 결과에서 전국 관객수에 유의미한 영향력을 미치는 변수는 개봉스크린 규모, 할리우드직배사의 배급, 여름시즌 개봉, 그리고 네티즌 평점이다. 본 연구는 한국 영화시장에서 애니메이션 흥행성과에 대한 분석을 시도했다는 점에서 의의를 찾을 수 있을 것이다.