디지털 콘텐츠 산업의 공간분포 특성에 관한 연구

김성훈,임용민,이시형,홍일영 남서울대학교 2010 남서울대학교 논문집 Vol.16 No.1-1

Digital contents industry is a developing industry which is being recognized for its growth possibility. This study is intended to understand the spacial distribution of digital contents industry. To do so, spatial range of this study is set in metropolitan regions to grasp the clustered regions. To understand the clustered regions of digital contents industry, spatial cluster analysis was enforced. As a result, total of 7 clusters were formed. 7 clusters are all located in Seoul, and 4 out of 7 are concentrated in Kangnam Gu. This study grasped the characteristics of these clusters. Locational factors of each company categories, which are the cause of such characteristic, are scheduled to be researched more specifically in the future. Key Words : digital contents industry, Spatial distribution, cluster, Locational factor, Spatial clustering

상순과 턱의 수직 비율(vertical lip-chin ration)에 대한 선호도 조사

권성준,최갑림,임성훈,김광원 대한치과교정학회 2004 대한치과교정학회지 Vol.34 No.5

일반인들이 선호하는 상순과 턱의 수직 비율(Sn-Stm/Stm-Me')을 알아보기 위해 남녀 각 2명의 연조직 측모(profile)를 상순과 턱의 수직비율에 따라 상악의 변화없이 하악만을 변화시켜 1/1.8, 1/1.9, 1/2.0, 1/2.1, 1/2.2 비율의 5개의 측모 사진을 만들어 치과의사 44명(남자 22명. 여자 22명)과 일반인 430명(남자 303명, 여자 127명)을 대상으로 하여 설문조사를 통하여 선호도를 조사하여 다음과 같은 결과를 얻었다. 대상의 가장 선호하는 안모에 대한 성별간의 선호도 차이는 통계적으로 유의하지 않았다. 대상의 가장 선호하는 안모에 대한 치과의사와 일반인 집단간의 선호도 차이는 통계적으로 유의하지 않았다. 남녀 측모 모두에서 가장 선호하는 측모의 상순과 턱의 비율은 1/1.9이었으며 가장 선호하지 않는 비율은 1/2.2 로 나타났다. 이상의 결과를 종합하여 볼 때, 이전의 연구 비해 상순과 턱의 수직비율에서 턱의 비율이 다소 작은 측모, 즉 상순과 턱의 수직 비율이 1/1.9인 안모를 가장 선호하는 것으로 나타났다. The purpose of this study was to investigate the preference of Vertical Lip-Chin Ratio (= Sn-Stm /Stm-Me' hereafter VLCR) in Koreans. The assessors consisted of 44 dentists (male 22, female 22) and 430 lay persons (male 303, female 127). The survey was performed using a questionnaire asking the order of preference. The profiles presented in the questionnaire were based on the profiles of two males and two females, each morphed according to the VLCRs of 1/1.8, 1/1.9, 1/2.0, 1/2.1, 1/2.2. The results were as follows: The difference between males and females, and the difference between dentists and lay persons in the preference of VLCR were not statistically apparent. The most preferred VLCR was 1/1.9, and the least preferred VLCR was 1/2.2. These results indicate that the preferred VLCR is smaller than the previously reported VLCR ratios based, on the cephalometric evaluation of samples with favorable facial esthetics.

급성 신부전증을 초래한 Wegener씨 육아종증 1례

박일,임영국,최성도,임현성,정종훈,문철웅 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.1

호흡기 증상과 급성신부전증이 발생된 환자에서 혈액검사, 혈청학적 검사, 방사선학적 검사, ANCA test 및 신생검을 통하여 Wegener씨 육아종증을 경험하였기에 문헌 고찰과 함께 보고하는 바이다. 본질환이 재발하는 경우는 cyclophosphamide에서 azathioprine으로 치료약을 바꾸었을때나 특히 ANCA 반응이 양성으로 지속시 발생한다. Godman과 Churg는 상기도의 괴사성 육아성 병변, 하기도의 괴사성 혈관염, 국한성 신사구체염을 진단의 지표로 삼았다. 특히 상기도 점막의 생검 소견상 괴사성 육아성 혈관염이 보이면 일단 본 증을 의심하고 폐 생검과 신 생검이 필요로 한다. Wegener's Granulomatosis is an uncommon disease which is characterized by granulomatous vasculitis of both lung and kidney. Although the cause is unknown, it's suggesting that disordered immunity with both antibody and cell-mediated tissue damage occurs. The disease affects patients of any age. Characteristic clinical manifestations are diverse but in clude saddle nose deformity, sinusitis, productive coughing, myalgia, fever etc. Characteristic laboratory abnormalities include elevated ESR, neutrophilic leukocytosis, anemia and positive test for ANCA test. Renal biopsy is important for diagnosis. The treatment of choice is a combination of corticosteroid and cytotoxic agent. A53-year-old woman was admitted to our hospital because of productive coughing, short of breathing, oliguria, nausea, and vomiting. Three months ago, she was suffered from general weakness, poor appetite, tingling sensation on extremity, and loosely stool. Twenty days ago, above symptoms were aggravated, she admitted local clinic. Six days ago, because of CBC showed anemia , she was done transfusion. During transfusion, she was developed urticaha then productive coughing, dyspnea, increased serum BUN and creatinine levels. She was transferred to our hospital under the impression of ARF. On the admission, she was chronic ill-looking appearance with pale conjunctiva, tachypnea, dyspnea, and cold sweating. We have checked the patient by CBC, serum and serologic test, X-ray, ANCA test, renal biopsy. With renal biopsy microscopic examination study revealed necrotizing vasculitis, We treated a combination therapy with methyl-PDS and cyclophosphamide. She had a good response. So we report wegener's granulomatosis with the review of relevant literature.

니켈담지촉매의 제조과정에서 액상산화의 효과

최재석,임태훈,홍성안,이호인 한국공업화학회 2004 응용화학 Vol.8 No.1

The deactivation of reforming catalyst in the DIR-MCFC was reported to be affected by dispersion, loading amounts, kind of support and so on. In this research, we checked the resistivities of catalysts prepared by the different methods, and examined the effect of liquid phase oxidation. The oxidized catalyst in a liquid phase showed the increased activity and dispersion even though the nickel species was supported by deposition-precipitation method. In order to investigate the role of the oxidation, TGA, TPR and XRD analyses were conducted. The increase in activity was ascribed to the strong metal-support interaction which was induced by liquidphase oxidation.

로드셀을 이용한 고속 감자 중량계량법

김상철,임종환,김귀식,김성근,양종훈 제주대학교 공과대학 첨단기술연구소 2001 尖端技術硏究所論文集 Vol.12 No.2

Potatos, together with tangerines, are one of the major agricultural products in Jeju, and the production account for more than 30% of the domestic production. Recently some kinds of sorting machine for potatos are available, but they are not extensively used because their performance is not satisfactory and/or they are very expensive. This paper presents a load based high speed weighting method for sorting the potatos. This method is based on the fact that the linear momentum of a potato is proportional to the mass of it. The usefulness of the method is demonstrated with sets of experiments.

수증기 개질반응용 니켈촉매에 첨가된 리튬의 효과

최재석,윤정숙,임태훈,홍성안,이호인 한국공업화학회 2005 응용화학 Vol.9 No.1

In the direct internal reforming type molten carbonate fuel cell, alkali carbonates used as electrolyte in the cell are transported to reforming catalyst of which activity drastically decreases. In our previous work, the deactivation of the nickel catalyst was studied with increasing the amount of added lithium. Unexpectedly, the increase of activity was observed with a small amount of lithium less than 1wt%. The results of TPR, XRD and chemisorption showed no significant difference between the fresh catalyst and the Li-added one, implying that lithium did not cause the change of morphological property of the supported nickel. To elucidate the effect of lithium the methanation of CO was applied to the catalysts, which was considered as the reverse reaction of the key elementary step of methane steam reforming. It can be seen by an online mass spectrometer that the small injection of CO/H₂ mixture into the Li-added catalyst reactor at 650 ℃ showed the longer tail of produced methane than into the fresh one. The delay should be originated from the effect of lithium, which determined the overall rate on the Li-added catalyst.

한의진단명과 진단요건의 표준화 연구 III : 3차년도 연구결과 보고

최선미,양기상,최승훈,박경모,박종현,심범상,김성우,노석선,이인선,정진홍,이진용,김달래,임형호,김윤범,박성식,송태원,김종우,이승기,최윤정,신순식 한국한의학연구원 1997 한국한의학연구원논문집 Vol.3 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the third year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows : - analyzing and differentiating of epidemic febrile disease - analyzing and differentiating in accordance with the Sasang constitution medicine based on four-type recognition - differentiation of disease according to pathological changes of Chong and Ren channels - standards for diagnosis of women's disease - standards for diagnosis of children's disease - standards for diagnosis of motor and sensor disturbance (-muscle. born, joint, etc.) - standards for diagnosis of neuropsychiatric disease - standards for diagnosis of five sense organ disease - standards for diagnosis of external disease The indivisual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name, notion of diagnosis pattern, index of differentiation of symptoms and signs, the main point of diagnosis, analysis of diagnosis pattern, discrimination of diagnosis pattern, prognosis, a way of curing a disease, prescription, herbs in common use, disease appearing the diagnosis pattern, documents. The standards for diagnosis of each disease was arranged by the diagnostic requirements in the following order : another name, notion of disease, the main point of diagnosis, analyzing and differentiating of disease, analysis of disease, discrimination of disease, prognosis, a way of curing and prescription of disease, disease in western medicine appearing the disease in oriental medicine, documents.

전기화학적 방법을 이용한 저온형 연료전지용 고분산 Pt 촉매의 제조

윤봉국,최재식,김현수,임태훈,홍성안,이호인 한국공업화학회 2003 응용화학 Vol.7 No.2

Pt was deposited on carbon support by chronoamperometry. The catalytic activity for methanol oxidation was checked by CV (cyclic voltammetry) method. The amount of Pt loading was calculated by integration of I-t curve obtaining the total current used for the Pt deposition. The ECA (electrochemical active surface area) for loaded Pt was calculated from the hydrogen adsorption/desorption peaks in 0.5 M H₂SO₄solution. Pt was deposited on clean carbon electrode surface with various concentration of Pt solution (0.1 mM) was used. As the concentration of Pt increased, the specific catalystic activity of Pt decreased suggesting that, in the electrochemical reaction of Pt ion with electrode surface, Pt particles were smaller and more dispersed in low concentration of Pt solution. With this condition (0.1 mM Pt), Pt was electrodeposited on a commercial carbon support, Vulcan XC-72. Electrochemically loaded Pt catalyst had the higher ECA, and showed higher specific catalytic activity for mathanol oxidation than a commercial Pt/C catalyst.

질산염 정주 중 발생한 관상동맥 연축에 의한 협심증과 동반된 심실 세동

신경황,조우희,이도현,이소라,임성훈 Ewha Womans University School of Medicine 2014 EMJ (Ewha medical journal) Vol.37 No.1

Variant angina pectoris is characterized by chest symptoms at rest and transient ST elevation on the electrocardiography due to coronary artery spasm. Although most patients with coronary spasm respond well to medical treatment with vasodilators such as calcium channel blockers and nitrates, some patients show intractable attack of coronary vasospasm despite standard medical therapy. We experienced 50-year-old woman with intractable chest pain due to coronary artery spasm, who suffered from ventricular fibrillation despite continuous intravenous nitrate therapy.

음낭외상시 고환파열에 대한 초음파 검사의 진단적 유용성

김경영,한동준,신대은,노준,문형윤,임동훈,김철성,박성운 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.3

Purpose: We determined the use of scrotal ultrasonography in the initial diagnosis and management of testicular injuries due to blunt scrotal trauma. Mateiials and Methods: We reviewed 54 patients of scrotal trauma in the last 8 years. Forty patients were evaluated by ultrasonography preoperatively. A heterogeneous echo pattern of the testicular parenchyma with loss of oval shape, contour definition was the basis for diagnosis of testicular rupture. Among them, 33 cases underwent scrotal exploration and 7 cases were managed conservatively. The remaining 14 patients were evaluated only by physical examination, 8 patients of them were explored immediately because of suspicious testicular mpture. The accuracy of ultrasonography were determined by comparing radiographic interpretations with intraoperative findings. Results: Among the 33 patients who were evaluated by ultrasonography and explored immediately, there were 26 suspected testicular ruptures on ultrasonography. Surgical exploration revealed testicular rupture in 23 and simple hematoma in 10. The testicular rupture was correctly diagnosed by ultrasonography in the 22 cases, and there were 4 false-positive and 1 false-negative diagnoses of testicular rupture. The sensivity and specificity for the diagnosis of testicular rupture are 96% and 60%, and the positive and negative predictive values are 85% and 86%, respectively, Conclusions: Scrotal ultrasonography, with the main radiographic finding of a heterogeneous echo pattern of the testicular parenchyma with loss of oval shape, contour definition, is highly sensitive on the diagnosis of testicular rupture. And it increases the salvage rate for testicular rupture with preservation of the testicular function and prevents delayed complications of chronic pain, atrophy and orchiectomy associated with missed testicular rupture.