• 설비공학논문집
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• 제26권9호
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• pp.424-433
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• 2014

The purpose of this study is to evaluate the effectiveness in the lighting performance of mixed type light-shelf, by comparing and analyzing the internal light-shelf, external light-shelf, and mixed-type light-shelf. The performance of light-shelf was evaluated according to the angle of light-shelf at summer solstice, winter solstice, vernal equinox, and autumn equinox. The comparative analysis between the internal light-shelf, external light-shelf, and mixed-type light-shelf was carried out using the performance evaluation and analysis method. The result of performance evaluation is shown as follows. The mixed type light-shelf showed the highest lighting performance all at summer solstice, winter solstice, vernal equinox, and autumn equinox, followed by the external light-shelf and the internal light-shelf in the same order. The mixed type light-shelf was the most favorable for bringing daylight to indoors by adjusting the angle of light-shelf, and it also showed the highest lighting performance in terms of uniformity ratio of illumination which indicates the quality of light.

• 한국콘텐츠학회논문지
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• 제20권7호
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• pp.233-243
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• 2020

본 연구는 학과 스스로 교육과정 전반을 점검할 수 있는 전공교육의 질관리 체계인 A대학교의 자체교육인증제도를 소개하고, 자체교육인증제가 역량기반 교육과정 질향상에 미치는 영향을 탐색해보고자 하였다. 이를 위해서 A대학교에서 매년 실시하고 있는 교육수요자 만족도 조사, 핵심역량 진단도구, 전공과목 강의평가 점수 분석 결과를 인증학과와 비인증학과로 구분하여 학생과 교수자의 교육성과를 분석하였다. 본 연구의 결과 및 시사점을 정리해 보면 다음과 같다. 첫째, 자체교육인증제의 효과로 인증추진 학과의 교육목표 및 교육과정 구성, 교육과정 운영, 교육과정 지원, 교육과정 개선의 만족도는 비인증 학과에 비하여 높은 것으로 확인되었으며, 이는 모두 통계적으로 유의미한 차이가 나타났다. 둘째, 학생 핵심역량은 자체교육인증을 취득하기 이전보다 취득한 이후에 보다 긍정적인 변화가 있는 것으로 나타났다. 셋째, 자체교육인증제는 전공과목 강의평가에 긍정적인 영향을 미치고 있는 것으로 확인되었다. 이러한 연구결과를 바탕으로 본 연구에서는 대학에서 자체교육인증 설계를 위한 기초자료를 제공하고자 하였다.

• 한국지반신소재학회논문집
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• 제13권4호
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• pp.143-151
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• 2014

본 연구에서는 대형 축조블록과 지오그리드 보강재를 이용한 보강토 옹벽의 안정성을 검토하였으며, 이를 바탕으로 구조물의 적용에 대하여 평가하였다. 안정성은 옹벽높이, 뒤채움 흙의 강도 및 지오그리드 보강재의 강도 조건에 따른 외적 및 내적안정성을 검토하였다. 외적안정성 분석 결과, 보강재의 길이는 전면벽체 저면으로부터 산정된 옹벽높이의 0.7H와 보강재 수직간격을 1m로 설치하였을 때, 뒤채움 흙의 내부마찰각 및 옹벽 높이에 관계없이 모든 해석조건에서 기준안전율을 만족하였다. 내적안정성의 경우에는 뒤채움 흙의 내부마찰각이 $25^{\circ}$인 경우에도 일부 옹벽 높이에서 파단 및 인발에 대한 안정성이 확보할 수 있는 것으로 나타났다. 특히, 내적안정성 평가결과를 바탕으로 대하여 구조적 안정성 및 경제성을 고려할 수 있는 구조물로의 적용이 가능할 것으로 확인되었다.

• Tuberculosis and Respiratory Diseases
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• 제67권6호
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• pp.551-555
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• 2009

A benign pulmonary metastasizing leiomyoma is a recognized clinical entity that has been infrequently reported in the medical literature. We report two cases of a benign pulmonary metastasizing leiomyoma. A 35-year-old woman who underwent myomectomy and a cesarean section approximately 6 years earlier visited our hospital for further evaluation of incidentally revealed multiple lung nodules. A diagnostic percutaneuous biopsy was performed. Finally she was diagnosed with a benign metastasizing leiomyoma. The patient then received LH-RH and has been followed up since. The other 44-year-old woman presented after an initial radiology evaluation revealed the presence of multiple, small-sized lung nodules. She underwent a right middle lung wedge resection to confirm the diagnosis. Finally she diagnosed with a benign metastasizing leiomyoma. The multiple lung nodules have been followed up closely.

• 한국임상수의학회:학술대회논문집
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• 한국임상수의학회 2007년도 춘계학술대회
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• pp.156-156
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• 2007

• 대한두경부종양학회:학술대회논문집
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• 대한두경부종양학회 1999년도 추계 학술대회
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• pp.273-273
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• 1999

• Journal of Yeungnam Medical Science
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• 제33권2호
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• pp.162-165
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• 2016

Barium sulfate is an inert material used as a radiographic contrast medium during upper gastrointestinal contrast studies for evaluation of patients with dysphagia. Oral barium aspiration is an uncommon but well-reported complication of this procedure. While barium aspiration of small amounts may not cause any symptoms, massive barium aspiration can be life-threatening, particularly in elderly patients with multiple comorbidities. In this case report, we describe an elderly patient with multiple comorbidities who presented with thyrotoxicosis and dysphagia, and then died after massive barium aspiration. Despite administration of intensive medical care with ventilator support and therapeutic bronchoalveolar lavage to remove the aspirated barium, the patient died of multiple organ failure 9 days after barium aspiration. Clinicians should pay attention to elderly patients with predisposing factors for aspiration in whom upper gastrointestinal barium contrast studies are indicated, and should consider other diagnostic tools for evaluation of dysphagia in this population.

• Tuberculosis and Respiratory Diseases
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• 제76권3호
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• pp.136-140
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• 2014

Pulmonary artery sarcoma (PAS) is a rare, poorly differentiated malignancy arising from the intimal layer of the pulmonary artery. Contrast-enhanced chest computed tomography (CT) is a good diagnostic modality that shows a low-attenuation filling defect of the pulmonary artery in PAS patients. An 18-year-old man was referred to our hospital for the evaluation and management of cavitary pulmonary lesions that did not respond to treatment. A contrast-enhanced CT of the chest was performed, which showed a filling defect within the right interlobar pulmonary artery. The patient underwent a curative right pneumonectomy after confirmation of PAS. Although lung parenchymal lesions of PAS are generally nonspecific, it can be presented as cavities indicate pulmonary infarcts. Clinicians must consider the possibility of PAS as well as pulmonary thromboembolism in patients with pulmonary infarcts. So, we report the case with PAS that was diagnosed during the evaluation of cavitary pulmonary lesions and reviewed the literatures.

• 한국의류학회지
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• 제44권4호
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• pp.626-638
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• 2020

In this study, protective masks were designed in varying internal volume and analyzed in regards to wearing effect. Masks were measured by surface temperature and subjective wear evaluation. Four experimental masks were created with an increasing distance between the mask center line and nose in increments. The distances were set at 0.0 cm (M0), 2.0 cm (M2), 4.0 cm (M4), and 6.0 cm (M6). The area and volume of each experimental mask was measured and both measurements had a positive correlation with the set distances. Among the experimental masks, M2 was the most breathable. The heat between the face and the mask created by exhalation was able to escape from the mask and provided the highest comfort sensation when worn. Conversely, an internal volume that is too large would decrease its comfort because repetitive breathing deforms the appearance of the mask and adversely affects its fit. Therefore, creating and maintaining the optimal internal volume of the M2 mask is important to achieve maximum thermal sensation and ease of wear.

• Agricultural and Biosystems Engineering
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• 제4권1호
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• pp.1-7
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• 2003

Internal defects such as browning of the flesh and blackening and rot of the ovary of pear can be easily developed because of the inadequate environmental conditions during the storage and distribution of fruit. The quality assurance system for the agricultural product is to be settled in Korea. All defected agricultural products should be excluded prior to the distribution to enhance the commercial values. However, early stage on-line defect detection of agricultural product is very difficult and even more difficult in a case of the internal defects. The goal of this research is to develop a system that can detect and classify internal defects of agricultural produce on-line using VIS/NIR transmittance spectroscopy. And Shingo pear, which is one of the famous species of Korean pear, was used for the experiment. Soft independence modeling of class analogy (SIMCA) algorithm was employed to analyze the transmittance spectroscopic data qualitatively. On-line classification system was constructed and classification model was developed and validated. As a result, the correct classification rate (CCR) using the developed classification model was 96.1 ％.