마이크로포로세서를 利用한 直流專動機의 計數的 速度制御

金德奎 慶北工業專門大學 1979 論文集 Vol.16 No.-

Microprocessor controlled digital speed control system of chopper-fed dc motor has been designed. By keeping speed constant, the actual speed is optically measured and digitally compared in the microprocessor with the desired speed setting which was given from external keyboard. Then produced error is used to adjust the 'on-time' of SCR chopper such that the motor speed is maintained at its desired value. The prototype's steady-state error is less than 0.1%.

可逆計數器와 減算器를 利用한 直流電動機의 計數的인 速度制御

沈鍾輔,金德奎 경북대학교 공과대학 1982 工大硏究誌 Vol.11 No.-

Up-down counter and subtractor-controlled digital speed control system of DC motor has been designed. The prototype's step response overshoot was less than 6% and steadystate error was less than ± 0.2%

마이크로프로세서를 이용한 직류서어보모터의 위치제어

蔣鐘國,金德奎 경북대학교 공과대학 1984 工大硏究誌 Vol.13 No.-

Software-based speed control system for dc servo motor was designed. The designed system was consisted of a personal computer as a host computer, microprocessor based motor controller, and power drive circuit. System designed fully digital scheme used variable period PWM signal for wide speed control range of dc serve motor. Experimental result of the designed system showed that speed control range could be extended to 8% of duty ratio for the controlling PWM signal.

베체트 장염 환자에 있어 내과적 치료에 대한 반응도 , 경과 및 재발률에 대한 연구

김지원,송인성,정현채,최규완,김정룡,임영석,김주성,장동경,차성덕,김찬규 대한소화기학회 1998 대한소화기학회지 Vol.30 No.4

Background/Aims: In order to study the course of Behqets colitis, we evaluated the response to medical and surgical treatment of the patients with Behqets colitis. Methods: We analyzed 54 patients who were treated under the diagnosis of Behqets colitis for ten years between June, 1986 and December, 1996 at Seoul National University Hospital. Follow-up durations, symptoms, involved organs, involved sites, types of therapy, the response to therapy and response duration were evaluated. Results: With 29 male and 25 female patients, the male to female ratio was 1.16:1, and the mean age was 34 years. Post-therapy follow-up durations ranged from 3 months to 25 years with the mean being 59 months(±56 months). Most colonic lesions were found in the ileocecal area. 91% were found in the ileocecal rea, 28% in the ascending colon, 15% in the transverse colon, 13% in the descending colon, 13% in the sigmoid colon, and 2% in the rectum. Wben colonic lesions were classified according to location and multiplicity, localized solitaiy lesions accounted for 44%, diffuse multiple lesions were 31%, and localized multiple lesions were 24%. Among those who underwent meclical therapy initially, 74.4% had remission or improvement. In average it took 4 weeks to have a response and 31 months before recurrence occurred. After medical treatment 23% of the patients underwent surgical treatment due to intractablility. 44% of all patients underwent operation, total operation nwnber was 42. Causes of operation were as follows; int6stinal perforation 33%, uncertain diagnosis 26%, intractable abdominal pain 19%, intestinal fistula 12%, and intestinal obstruction 10%. Operation incidence rate was 15/100 person-year and the 5-year cumulative operation rate was 47%. Those who underwent multiple operations were 22% of all patients and 50% of operation cases. Operation rates of diffuse multiple lesions, localized multiple lesions, and localized solitary lesions were 29%, 31%, and 63%. Re-operation rates were 80%, 75%, and 33% each. Conclusions: Behqet's colitis is a chronic recurrent disease. When medical therapy was effective, the response occurred within 8 weeks. Five-year cumulative operation rate was 47%. Re-operations were more frequent in diffuse multiple lesions, and explorative operations for confirmative diagnosis were more frequent in localized solitary lesions. Operations due to intestinal perforation made up 33% of all operations, so when the patients with Behcet's colitis were aggravated, we should consider the possibility of intestinal perforation.

다발성 림프종양 용종증(Multiple Lymphomatous Polyposis)1예

김지원,송인성,정현채,김철우,김정룡,방영주,차성덕,정준오,김찬규,이진혁,나상훈 대한소화기학회 1998 대한소화기학회지 Vol.31 No.6

Multiple lymphomatous polyposis (MLP) is a rare and unique clinical entity that manifest as multiple polyps occurring throughout the gastrointestinal tract. Unlike MALT-type lymphoma, MLP has a high tendency for extra-intestinsl spread and short mean survival time, The malignant cells of MLP share morphological, immunohistologic and cytogenetic similarity with cells of nodal-based mantle cell lympboma. We report a case of MLP that is presented with multiple polyposis affecting stomach, duodenum, small intestine and colon/rectum.

Breeding of biparental sex-limited larval marking yellow cocoon variety "Hanbyeolnue"

Kim, Kee-young,Seo, Sang-deog,Kim, Mi-ja,Ji, Sang-duk,Sung, Gyoo-byung,Kim, Yong-soon,Ju, Wan-taek,Kwon, Hae-yong,Sohn, Bong-hee,Kang, Pil-don Korean Society of Sericultural Science 2016 International Journal of Industrial Entomology Vol.32 No.2

All of silkworm varieties reared in farmhouses are first generation hybrids, for the production of these hybrid silkworms precise and labor-saving sex discrimination is necessary. The new variety "Hanbyeolnue" is biparental sex-limited larval marking yellow cocoon variety which was bred from biparental sex-limited strain of Japanese originated Jam 319 and Chinese originated Jam 320. Productivity test of Hanbyeolnue in 2015 showed high healthiness and short larval period. The Hanbyeolnue was evaluated as an excellent variety which can be utilized for special purpose silkworm such as male pupae or Cordyceps production.

크론병으로 인한 대장협착의 내시경적 풍선확장술 1예

김지원,송인성,정현채,최규완,박민정,김정룡,김진,문선희,차성덕,황진혁,김찬규 대한소화기내시경학회 1997 Clinical Endoscopy Vol.17 No.5

Chronic idiopathic inflamatory bowel disease, espcaially Crohn's disease, is frequently complicated with low gastrointestinal stricture. Besides medical treatment of active inflammation, there is no specific, conservative approach to this complication, Repetitive surgery with extensive resections, leading to short bowel syndrome, is often necessary. Balloons have been used for a variety of gastrointestinal stenoses including esophageal, small intestinal, and colonic stricture. Balloon dilation offers many theoretical advantages (safety, and patient comfort) over dilation with bougies. Especially, the availability of large diameter balloon dilators, which pass through the biopsy channel of standard endoscopes (through-the scope balloon or TTS balloon), has promised efficient direct-vision dilatation of strictures without the need of guide wires or fluoroscope. We report a case of colonic Crohn's stricture dilated successfully using TTS balloon catheter.

오디 생산용 뽕나무 품종 상마루의 특성

성규병 ( Gyoo Byung Sung ),김용순 ( Yong Soon Kim ),김기영 ( Kee Young Kim ),지상덕 ( Sang Duk Ji ),김현복 ( Hyun Bok Kim ) 한국잠사학회 2015 한국잠사곤충학회지 Vol.53 No.2

주로 누에사육을 위한 사료 생산용으로 이용되던 뽕나무의 용도가 다양화 되면서, 부산물로 이용되어 온 오디가 새로운 소득작목으로 정착되어 가고 있다. 이에 따라 오디 생산에 적합한 뽕 품종에 대한 수요가 늘어나고 있어, 새로운 오디용 뽕품종으로 “상마루”를 육성하여 품종 보호출원하였으며(출원번호: 2015-418)하였다. 이 품종의 육성 경위와 특성은 아래와 같다. 1. ‘상마루’는 국립농업과학원 잠사양봉소재과 수원 뽕나무 유전자원 포장에 보존되어 있던 ‘청일’ 품종의 겨울눈에 콜히친을 처리하여 4배체로 만든 계통을 ‘수원상 102호’로 명명하였다. 2. ‘수원상 102호’를 ‘08-’12년까지 3개 지역(수원, 청주 및 장성)에서 ‘청일’을 대조품종으로 하여 지역적응 시험을 하였으며, 직무 육성신품종 심의회에서 오디생산용으로 우수한 품종임이 인정되어 품종으로 보호 출원하였다. 3. ‘상마루’는 백상형(Morus alba L.)에 속하는 암나무이며, 발아개엽기는 청일뽕과 비슷한 직립성의 중생종이다. 4. 오디는 식재 후 3년차부터 결실하기 시작하였으며, 식재 후 3년차(‘10, 결실 1년차)에는 대조품종인 ‘청일’보다 14% 높은 수준을 나타내었다. 식재 후 4년차(’11, 결실 2년차)에는 7% 낮았고, 5년차(’12, 결실 3년차)부터 7년차(’14, 결실 5년차) 까지는 6 ~ 11% 높아, 시험기간 결실 5년간의 평균수량은 ‘청일’보다 6% 증수되었다. 5. 오디 한 개의 무게인 단과중은 3.8g으로 ‘청일’ 품종 2.3 g에 비하여 무거운 중과형이며, 완숙된 오디의 색상은 검은색으로, 오디의 당도는 ‘청일’보다 약간 낮다. We bred a mulberry cultivar named Sangmaru, through local adaptability test, which is under registration as a new cultivar for fruit production. Local adaptability test had been carried out at three places (Suwon, Cheongju, and Jangseong) for seven years from 2008. This is tetraploidy variety belonging to Morus alba L. made by colchicine treatment on growing point of ‘Chungil (Morus alba L.)’ winter buds. Sangmaru was high yielding cultivar in fruit productivity by 6% compared to control cultivar ‘Chungil (Morus alba L.)’ for five years. Although Sangmaru was similar in sugar content of mulberry fruits, it was bigger than that of ‘Chungil’. It is adaptable to every where except the places where cold damage and sclerotic disease happen frequently.

오디 생산용 뽕 품종 육성을 위한 교배모본 "팔청"의 특성

성규병 ( Gyoo Byung Sung ),김용순 ( Yong Soon Kim ),김기영 ( Kee Young Kim ),김현복 ( Hyun Bok Kim ),지상덕 ( Sang Duk Ji ),강필돈 ( Pil Don Kang ) 한국잠사학회 2014 한국잠사곤충학회지 Vol.52 No.2

We bred a mulberry cultivar named Palcheong, through local adaptability test, which is under registration as a new cultivar for fruit production. Local adaptability test had been carried out at four places (Suwon, Kongju, Wanju, and Jinju) for seven years from 2007. This is belonging to (Morus Lhou(Ser.) Koidz.) selected among mulberry genetic resources preserved in Suwon. Its sex expression was hermaphrodite, which can be used for the production of seedling for fruit production by artificial crossing as pollen parent Palchung showed lower yielding in fruit productivity by 16% compared to control cultivar ‘Chungil (Morus alba L.)’ for five years. Although Palchung was higher in sugar content of mulberry fruits, it was bigger than that of ‘Chungil’. It is adaptable to every where except the places where cold damage and sclerotic disease happen frequently.

빈곤층의 보수화(保守化)에 관한 고찰

김덕규 ( Duk Gyoo Kim ),최문섭 ( Moon Sub Choi ) 연세대학교 경제연구소 2015 延世經濟硏究 Vol.22 No.1

정제적 불평등이 심화될수록 저소득층이 보수적이 된다는 관찰(Kelly and Enns. 2010)은 그들에게 유리할 수 있는 소득재분배 정책을 반대한다는 점 에서 비직관적이다 본고의 목적은 이 관찰을 설명할 수 있는 간단한 경제학 모형 혹은 대중의 선호에 대한 올바른 가정을 제시하는 것이다. 우리는 위치 재의 외부 효과를 고려한 모형이 위의 관찰을 상당 부분 설명할 수 있음을 밝혔다. 위치재(Positional goods)는 효용이 같은 집단에 속한 타인과의 상대 적 위치의 비교를 통해 많은 부분 결정되는 재화로 절대적인 재화의 소비량 이 늘어나더라도 상대적으로 작은 소비를 히는 경우 전체 효용이 감소환 가능 성을 내포한다. 모든 개인이 위치 경쟁을 하고 새 경제정책을 도입했을 때 개인의 노동생산성이 임의로 교란되는 경우 적절한 모수집단 안에서 중산층 만이 소득 재분배 정책을 지지하고 고소득층과 저소득층이 정책을 반대하는 현상이 나타날 수 있다. 특히 저소득층의 경우. 소득재분배 정객을 동해 얻게 되는 기대 효용을 노동 생산성의 교란에 의해서 현재의 상대적 위치를 잃었을때의 비효용이 상쇄할 예 소득재분배 정책을 반대하게 된다. 노동생산성의 교란이 관찰을 주도적으로 이끄는 것은 아니다. 표준적인 모형에 노동생산생의 교란만을 고려했을 때에는 위의 관찰을 설명할 수 없다. The observation that as income inequality gets severer the lower income class become more conservative (Kelly and Enns, 2010) is counter-intuitive in that they vote against a redistribution policy that may be beneficial to themselves. The purpose of this letter is to provide a reasonable set of assumptions, or a simple economic model that predicts such an observation. We show that positional externality can explain the observation. Positional goods are ones whose utility mainly depends on how it compares with others in the same category. When the citizens take the positional competition and their labor productivity randomly adjusted after a new public policy is approved, we show that only the middle income citizens may vote for the redistribution policy while the high and the low income citizens vote against. The poor may vote against the redistribution policy when the expected utility gain of the redistribution in absolute terms is smaller than the disutility of the possibility of losing a relative position due to productivity shock. The productivity shock is not a main driving force of yielding the desirable prediction. We cannot explain the observation by adding productivity shocks only.