• 한국산학기술학회논문지
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• 제12권8호
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• pp.3497-3502
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• 2011

이 연구는 BGA 교육프로그램을 통하여 유아들의 뇌발달에 미치는 영향을 개인이 지닌 뇌신경 생리학적 지표인 뇌파 측정을 이용하여 연구 하였다. 대상자는 2010년 7월에서 2010년 12월까지 S시, W시 유치원 원아 200명(실험군 100명, 대조군 100명)을 기준으로 선정한 자료이다. BGA 교육 프로그램은 일주일에 3회씩 6개월 동안 진행하였으며 1회교육시간은 30분 정도이다. BGA 교육 프로그램 적용 전과 후의 뇌발달 변화는 시계열 선형 분석을 통하여 비교하였으며 연구 검증 결과. BGA 교육 프로그램을 적용한 원아들의 뇌기능에서 유의미한 차이를 보였다. 이 결과는 BGA 교육 프로그램이 유아들의 뇌 발달에 긍정적인 영향을 미쳤다고 본다.

• 한국산학기술학회논문지
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• 제12권8호
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• pp.3486-3491
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• 2011

본 연구는 2010년 1월부터 2010년 7월까지 B. 뇌훈련 센터에 자기주도학습 능력 향상을 위하여 방문한 내담자 60명(실험군 30명, 대조군 30명)의 뇌파를 검사하여 뉴로피드백 훈련 전과 훈련 후의 뇌 기능과 자기주도학습능력 변화를 보고자 하였다. 자기주도학습 능력에 영향을 미치는 특정한 뇌 기능의 훈련 전후 결과를 시계열 선형분석으로 비교하였다. 연구의 결과로 자기조절지수, 훈련모드, 자기주도학습 능력 설문지에서 실험군의 평균이 상승해 집단 간에 유의미한 차이가 나타났다. 이는 뉴로피드백의 기술을 적용한 뇌 훈련은 자기조절지수와 자기주도학습 능력에 긍정적인 영향을 미친다고 볼 수 있겠다.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2006년도 추계학술발표대회 논문집
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• pp.121-124
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• 2006

This study was done with a goal to observe changes of color emotions according to time flow and light changes as well as to study its moaning of color experience of natural scene to modern city dwellers with artificial surroundings. Individuals develop various feelings after seeing a color, but there is sometimes a common feeling raised among these various feelings. This study aims to investigate the influence of natural colors of surroundings on the emotions of human beings. First of all, we tried to discover how feelings change after a person is reminded of a color through an experience (recognition) of a natural color. Second, differences in feelings resulting from color perception are analyzed after time passes (sunrise, daytime, and sunset) and the colors of natural surroundings change accordingly. Survey was done in the period of $Jul.8^{th}$ to $10^{th}$, 2005 with 100 people (55 male and 45 female) in various professions and various ages between twenties to forties as respondent.

• Journal of Chest Surgery
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• 제21권3호
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• pp.447-453
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• 1988

Intrapleural instillation of tetracycline as a preventive measure against recurrence in spontaneous pneumothorax was performed at the Department of Thoracic and Cardiovascular Surgery, Kyungpook National University Hospital for 3 years from Jul. 1984 to Aug. 1987. In this period, 124[70.0%] out of 177 patients of spontaneous pneumothorax who received closed thoracostomy were followed up. Tetracycline pleurodesis was applied to 32 cases. The recurrence rate of the tetracycline instillation group was lower than that of noninstillation group. In patients with first attack, the recurrence rate was 12.5% in the instillation group and 35.3% in the noninstillation group. In the second episodes, 25.6% and 83.3%[p< 0.01], in the third episodes 25.0%, 100.0%[p< 0.05]. In total cases, 18.8% and 39.8%[p< 0.05] of recurrence rates were observed. Systemic or local reactions such as fever, chest pain, and pleural effusion were observed in 23 patients[71.9%] after instillation, but all were transient and benign without sequelae. In cases of systemic or local reactions the recurrence rate was lower than that with no reactions but with no statistical significance. In the four patients primarily treated with tetracycline pleurodesis who then underwent thoracotomy, mild alterations were shown in the pleurae except dense adhesions at the previous thoracotomy sites. There was no significant difference between the two groups in terms of durations of hospitalization and post-treatment recurrences.

• 한국치위생학회지
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• 제9권1호
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• pp.113-123
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• 2009

This study was undertaken evaluate the general image for dental hygienist. A questionnaire was given to each Dentist, the staff of dental. 65 Dentist, 145 the staff of dental were included in the subjects between Jul. 1 and Oct. 30, 2008. The collected data was analysed by the SPSS Win 12.0/PC using frequency, percentage, mean, standard deviation, chi-square, t-test, ANOVA. The image for the dental hygienist was analyzed by 28 items. As a result of analysis on image of dental hygienist, The Dentist's group and staff's group, both appreciated positive image that explain process of treatment to patient very well, having professional knowledge and experienced skill, carries on an effective and valuable work. give a confidenced to patient. These group also gave negative image in the aspect that the dental hygienist is stressful job, handmaid of Dentist, participate of decided something for dental clinic, having association activities. It is necessary for dental hygienist by oneself development ability through science congress variety major and acquirement new technology, exchange information, interchange activities, and association of dental hygienist should efforts for growing up image through mass media.

• 한국수산과학회지
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• 제50권5호
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• pp.561-566
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• 2017

Few studies on the finless porpoise Neophocaena asiaeorientalis have been conducted on the south coast of Korea. This region includes Gadeok Island, which is located off the Korean peninsula in an area of heavy maritime traffic. Sighting surveys of finless porpoises were conducted at seven predetermined spots around Gadeok Island in January, May, July, September, and November 2016. Finless porpoises (127 individuals in 24 schools) were sighted at all but one (spot P5) of the survey locations. Fewer porpoises were spotted in summer (Jul and Sep) than in other seasons (P<0.05). Porpoises were most abundant around the south coast of the island, where they were spotted in every season, and in significantly higher numbers than at other locations (P<0.05). Single individuals accounted for 20.8% of sightings, while 25.0% of sighted schools consisted of only two porpoises. The mean school size was 5.29 individuals (SD=6.72).

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제53권10호
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• pp.610-617
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• 2004

This paper presents a novel high frequency generating circuit integrated chopper-inverter using ZVS with high power-factor. The proposed topology is integrated half-bridge boost rectifier as power factor corrector(PFC) and half-bridge high frequency resonant inverter into a single-stage. The input stage of the half-bridge boost rectifier works in discontinuous conduction mode(DCM) with constant duty cycle and variable switching frequency. So that a boost converter makes the line current follow naturally the sinusoidal line voltage waveform. Simulation results have demonstrated the feasibility of the proposed high frequency resonant inverter. Characteristics values based on characteristics analysis through circuit analysis is given as basis data in design procedure. Also, experimental results are presented to verify theoretical discussion. This proposed inverter will be able to be practically used as a power supply in various fields as induction heating applications. fluorescent lamp and DC-DC converter etc.

• 한국어류학회지
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• 제19권1호
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• pp.70-72
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• 2007

우리나라의 동해 연안에서 출현하는 날개줄고기과 어류 1개체를 동정한 결과 지금까지 우리나라에서는 기록되지 않은 Hypsagonus corniger Taranetz로 확인되었다. 본종은 형태적으로 뿔줄고기와 유사하지만, 제1등지느러미 가시는 7개이고, 후두부 가시가 길고, 체측 상부 골질판에는 가시가 없고, 체측 가시 끝이 예리하며, 제1등지느러미와 제2등지느러미 사이는 제2등지느러미 기저 길이보다 크고, 제1등지느러미의 제1가지와 제2가시의 길이 차이가 큰 점 등이 특징적이다. 본 종의 신한국명은 몸에 예리한 가시가 많아서 "가시줄고기"라고 명명하였다.

• Journal of Power Electronics
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• 제13권5호
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• pp.737-745
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• 2013

Offshore wind farms are rapidly growing owing to their comparatively more stable wind conditions than onshore and land-based wind farms. The power capacity of offshore wind turbines has been increased to 5MW in order to capture a larger amount of wind energy, which results in an increase of each component's size. Furthermore, the weight of the marine turbine components installed in the nacelle directly influences the total mechanical design, as well as the operation and maintenance (O&M) costs. A reduction in the weight of the nacelle allows for cost-effective tower and foundation structures. On the other hand, longer transmission distances from an offshore wind turbine to the load leads to higher energy losses. In this regard, DC transmission is more useful than AC transmission in terms of efficiency because no reactive power is generated/consumed by DC transmission cables. This paper describes some of the challenges and difficulties faced in designing high-power-density power conversion systems (HPDPCSs) for offshore wind turbines. A new approach for high gain/high voltage systems is introduced using transformerless power conversion technologies. Finally, the proposed converter is evaluated in terms of step-up conversion ratio, device number, modulation, and costs.

• 한국어류학회지
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• 제30권3호
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• pp.170-174
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• 2018

농어목 전갱이과에 속하는 Caranx melampygus 1개체(표준체장 113 mm)가 2010년 8월 13일 제주도 서귀포시 대포동의 정치망에서 처음으로 채집되었다. 이 종은 형태적으로 우리나라에 서식하고 있는 줄전갱이(C. sexfasiatus)와 유사하지만 주둥이 끝이 눈의 말단을 이르지 않는 점과 주새개골의 상단에 검은 반점이 없는 것이 특징이다. 이 미기록종의 종명은 줄전갱이와 비교할 때 상대적으로 작은 입을 가지고 있어서 "작은입줄전갱이"로 제안한다.