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Analysis of factors influencing voice quality and therapeutic approaches in vocal polyp patients
Cho, Kwang Jae,Nam, Inn Chul,Hwang, Yeon Shin,Shim, Mi Ran,Park, Jun Ook,Cho, Jung Hae,Joo, Young Hoon,Kim, Min Sik,Sun, Dong Il Springer-Verlag 2011 European archives of oto-rhino-laryngology Vol.268 No.9
Cho, Na-Ra,Lee, Chi-Woo,Cho, Dae-Won,Kang, Sang-Ook,Ko, Jae-Jung,Nazeeruddin, Mohammad K. Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.suppl8
Ion-coordinating ruthenium complexes [cis-Ru(dcbpy)(L)(NCS)$_2$, where dcbpy is 4,4'-dicarboxylic acid-2,2'-bipyridine and L is 1,4,7,10-tetraoxa-13-azacyclopentadecane, JK-121, or bis(2-(2-methoxy-ethoxy)ethyl) amine, JK-122] have been synthesized and characterized using $^1H$ NMR, Fourier transform IR, UV/vis spectroscopy, and cyclic voltammetry. The effect of $Li^+$ in the electrolyte on the photovoltaic performance was investigated. With the stepwise addition of $Li^+$ to a liquid electrolyte, the device shows significant increase in the photo-current density, but a small decrease in the open circuit voltage. The solar cell with a hole conductor, the addition of $Li^+$ resulted in a 30% improvement in efficiency. The JK-121 sensitized cells in the liquid and solid-state electrolyte give power conversion efficiencies of 6.95% and 2.59%, respectively, under the simulated sunlight.
이재우 ( Jae Woo Lee ),이상협 ( Sang Hyub Lee ),조영윤 ( Young Yoon Cho ),오수연 ( Soo Yeon Oh ),음영욱 ( Young Ook Eum ),한호성 ( Ho Seong Han ),김혜령 ( Hae Ryoung Kim ),김영훈 ( Young Hoon Kim ) 대한췌담도학회 2013 대한췌담도학회지 Vol.18 No.4
담낭신경내분비종은 드물게 발생하는 일차성 담낭암이며, 전산화단층촬영이나 초음파와 같은 통상적인 영상검사로 쉽게 발견되지 않는다. 석회화담낭 역시 드물기 때문에석회화담낭을 동반하는 신경내분비종은 매우 희귀하다. 명치부위 통증을 주소로 내원한 75세 여자환자가 전산화단 층촬영에서 석회화담낭과 다엽성 종괴가 발견되어 확대 담낭절제술을 시행하였고, 최종 병리소견으로 담낭신경내분 비종과 석회화담낭이 확진되었다. 석회화담낭을 동반하는 담낭신경내분비종은 이전에 보고된 바 없기에 저자들은 이 를 문헌고찰과 함께 보고하는 바이다. Gallbladder neuroendocrine tumor (NET) is a rare cause of primary gallbladder carcinoma, and cannot be easily detected by conventional radiologic study such as computed tomography (CT) or sonography. Porcelain gallbladder is also rare. Therefore, gallbladder NET accompanying porcelain gallbladder is very rare. We report here on a 75-year-old woman with gallbladder NET accompanying porcelain gallbladder, abdominal CT showed a porcelain gallbladder with a multilobulated mass lesion invading liver segment 8. Extended cholecystectomy was performed and the microscopic features of the resected specimen confirmed the diagnosis of gallbladder NET and porcelain gallbladder. Gallbladder NET accompanying porcelain gallbladder has not been reported. We report on this unusual case along with a review of the relevant literature.
학교체육이 학생들의 지능과 학업성취도에 미치는 영향: 메타 분석
조욱상(Ook Sang Cho),김재원(Jae Won Kim) 한국스포츠교육학회 2012 한국스포츠교육학회지 Vol.19 No.2
신체활동과 인지발달과의 관계에 대한 논의는 체육교육과 정신의학 분야의 연구자들에 의해 지속적으로 이루어져왔다. 하지만 학교체육을 통한 신체활동과 학생들의 지능, 그리고 학업성취도간의 상관관계에 대한 연구는 활발히 진행되지 못했다. 특히 그 필요성이 충분히 제기 되었음에도 불구하고, 학교체육과 정신의학 분야의 학제 간 연구는 그 사례를 찾아보기 어렵다. 이에 본 연구에서는 체육교사교육과 정신의학 분야의 연구자가 그간 발간되어 온 관련 연구들의 결과를 수집하여 학교체육이 학생들의 지능과 학업성취도에 어느 정도의 영향을 미쳐왔는지를 종합적으로 분석하였다. 자료 수집은 국내·외 학술논문 데이터베이스(DB)들을 통해 이루어졌으며, 한국, 미국, 캐나다, 그리고 호주에서 발행된 학술지 논문들과 미간행 학위논문들이 자료분석의 대상이 되었다. 검색된 472편의 관련 논문들 중 20편의 논문들이 본 연구의 자료 분석을 위한 기준에 의해 선별되었다. 자료 분석은 Effect Size(ES) 산출을 통한 메타분석으로 이루어졌으며, 자료 분석 결과 그 정도가 통계적으로 유의하지 않았지만, 학교체육은 학생들의 지능 발달과 학업성취도 향상에 긍정적인 역할을 했다는 종합적 결론에 도달했다. 메타분석을 통한 선행연구 결과의 재해석은 체육교육과 정신의학적 견지에서 이루어졌으며, 본 연구의 결과는 체육과 교육과정의 개정, 학교체육정책의 수정 및 보완, 그리고 학제간 연구의 설계에 있어 이론적 근거로서 그 역할을 할 것으로 기대된다. Physical educators and neuropsychiatrists share common knowledge that physical activity influences on changes in students` cognitive performance and academic achievement. The purpose of this study is to investigate the findings of research that has focused on the impacts of school-based physical education on students` intelligence and academic achievement. Initially, 472 studies were collected; these research studies were conducted in South Korea, the United States, Canada, and Australia. Then, 20 studies were selected for the meta analysis because of their inclusion of information required for the present investigation. Effect Size(ES) was calculated by the means and standard deviations of age levels of the participants and of the countries where the research studies were conducted. The findings of the present study suggest that school physical education has had a positive impact on students` intelligence and academic achievement; however, the significance of the impact was small. The researchers of this study interpreted the results of the meta analysis through the lenses of both physical education and neuroscience. In addition, the study discusses appropriate approaches to the design of physical education curricula, the supplementation of physical education policies, and the design of interdisciplinary research between the fields of physical education and neuroscience.
Design of Learning Courses of Sorting Algorithms using LAMS
Yoo, Jae-Soo,Seong, Dong-Ook,Park, Yong-Hun,Lee, Seok-Jae,Yoo, Kwan-Hee,Cho, Ja-Yeon The Korea Contents Association 2008 International Journal of Contents Vol.4 No.1
The development of communication technology and the spread of computers and internet have affected to the field of education. In this paper, we design a learning process with LAMS to make the new education environment which is required in an information age. We made the learning environment with LAMS which develops the learner's algorithmic thinking faculty on some sorting algorithm, especially such as selection sort, bubble sort and insertion sort algorithm. In addition, we analyse the effectiveness of the learning environment. The designed contents were applied to elementary school students' learning and a questionnaire survey was conducted after a learning course. The research of the questionnaire shows that the learning system using LAMS motivates a learner for learning and provides a convenient learning environment.
A case of pulmonary cryptococcosis mimicking pulmonary tuberculosis in a healthy young man
( Byung Ook Lee ),( Sun Young Cho ),( In Won Park ),( Jae Chol Choi ),( Byoung Whui Choi ),( Jae Yeol Kim ),( Jong Wook Shin ) 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.1
Cryptococcosis is a common opportunistic infection in patients with acquired immunodeficiency syndrome and other causes of reduced immunity. Majority of pulmonary cryptococcosis patients exhibiting non specific clinical manifestations. So diagnosis of pulmonary cryptococcosis in patients without underlying diseases is generally difficult. Especially in an area with a high prevalence of pulmonary tuberculosis and when it shows cavitary lesion, pulmonary cryptococcosis is likely to be misdiagnosed as a pulmonary tuberculosis. We present here a case of pulmonary cryptococcosis that mimicked pulmonary tuberculosis in an immunocompetent patient. A 29 -year- old man presented with a 4 -day history of productive cough, low grade fever and left pleuritic chest pain. The serum anti-HIV antibody was negative. A chest X-ray showed patchy infiltration on the left upper lung field. Computed tomography (CT) showed segmental consolidation in the anterior segment of the left upper. The examination of the sputum for acid-fast bacilli with gram staining and culture did not reveal any organisms. Four days later the patient respiratory symptoms was aggravated. A follow-up chest CT demonstrated progression of the segmental consolidation with cavitation and necrosis. We conducted bronchoalveolar lavage and fluid culture was negative and there were neither acid-fast bacilli nor any pathogens. To get a tissue specimen, we conducted ultrasonography guided percutaneous needle aspiration. The specimen exhibited multiple areas of granulomatous inflammation and round, yeast-like bodies. Mucicarmine stain for the capsular material was incompletely positive and the Fontana-Masson silver stain was negative. The tissue fungal culture did not grow Cryptococcus. The result of the serum cryptococcal antigen test was positive, with a titer of 1:256. The result of the histology and the high titer of SCA strongly suggested pulmonary cryptoccosis, so we conducted polymerase chain reaction (PCR) for the tissue and the PCR from the tissue specimen was positive for cryptoccosis. Treatment with 400 mg/d of oral fluconazole for 9-month course was initiated. At the end of treatment, pulmonary lesions were improved on the follow-up CT.