퍼지하드웨어 시스템의 구성기법에 관한 연구

鄭乙珠,金鐘勳 東亞大學校 附設 情報通信硏究所 1994 情報通信硏究所論文誌 Vol.2 No.1

본 연구는 일반적으로 사용되고있는 아날로그형 퍼지제어기를 디지탈 하드웨어 시스템으로 구성하는 기법을 제안한다. 이를 위해 퍼지제어기의 기본 기능인 퍼지화, 추론규칙, 비퍼지화 등을 분석하고, 퍼지데이타의 취급에 적합하도록 세그먼트와 페이지로 이원화된 메모리를 구성하였다. 이를 토대로 퍼지제어에 필요한 퍼지명령어를 추출하고, 이것들에 적합한 명령어 형식과 디지탈 하드웨어 시스템의 구성기법안을 제안하였다. 또한 제안된 시스템을 VHDL로 기술하여 시뮬레이션을 행한 결과, 그 타당성을 확인하였다.

Sn-xAg-0.5Cu 무연 솔더 볼의 파단특성 연구

정종설,이용성,신기훈,정성균,장동영 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

This paper presents a study on the failure characteristics of SnAgCu lead-free solder balls. To estimate the effect of Ag, three types of SnAgCu balls are first prepared by varying the weight percent of Ag (1.0, 3.0, 4.0 wt%) and then analyzed by reliability tests such as thermal shock, high speed ball shear, and drop tests. Thermal shock test reveals that the higher the weight percent of Ag is, the longer the fatigue life becomes. To the contrary, high speed ball-shear test and drop test show that the shear strength and the fracture toughness of solder balls are inversely proportional to the weight percent of Ag, respectively. Reasons for these observations will be further investigated in the future work.

외안각 절제술과 경결막 절개에 의한 안와 접근법

정종철,김성범,서지훈,송민석,전창훈,최세훈,김현민 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.4

Various surgical approaches to the orbits have been used. But the transconjunctival approach, also called the inferior fornix incision, provides adequate access to the orbital floor with esthetic results. Additionally, transconjunctival approach with lateral canthotomy allows more wide surgical field and good access to the orbital area. Generally, preseptal approach is more used rather than postseptal approach in the transconjunctival incision for the prevention of fat herniation during surgery. There are some complications in transconjunctival approaches but these complications can be prevented with careful surgical techniques. We report clinical results in 12 patients who were treated by preseptal transconjunctival incision with lateral canthotomoy for the treatment of orbital trauma. We were satisfied with this technique for reduction and reconstruction of the orbital trauma and we could also observe relatively good esthetic results.

재배 콩나물 저장 중 온도처리가 isoflavone 함량에 미치는 영향

정연신,이향미,Krishna Hari Dhakal,김용훈,이정동,신동현,황영현 경북대학교 농업과학기술연구소 2008 慶北大農學誌 Vol.26 No.-

콩나물로부터 고 isoflavone 함량의 콩 식품윈료를 얻고자 콩나물 재배 시 빛을 쪼여주고, 재배한 콩나물의 저장온도를 달리한 조건에서 isoflavone 함량변이 를 조사하였다. 공시 품종들의 7일 재배 후 저장하기 전 isoflavone함량은 아가 3호>아가 1호>아가 2호>아가 4호>장기콩>보석콩>은하콩>풍산나물콩 순이었는데 아가 3호의 isoflavone 함량은 4,619㎍/g이었다. 재배한 콩나물의 isoflavone 함량은 저장온도에 따라 품증별로 상이한 차이를 보였는데, 저장온도 6℃와 20℃에서 isoflavone함량이 높은 반면 저장온도 9℃와 30℃에서는 대부분 콩 품종들의 isoflavone 함량은 낮았다. 저장일수에 따른 isoflavone의 함량은 품종들 간에 일정한 경향이 없었으나 대부분의 품종들은 저장기간 3일 이내에 가장 높은 isoflavone 함량을 보였고, 아가 4호와 장기콩은 저장기간 5일에서도 높은 isoflavone의 함량을 보였다. 저장기간과 온도처리를 하여 재배한 콩나물의 isoflavone 함량을 높이고자 한 결과 아가 3호를 포함하여 공시한 8품종 중 4품종에서 20'C에서 하루 동안 저장했을 때 가장 높은 isoflavone의 함량을 나타내었다. 재배한 콩나물들 중 저장을 통해 가장 높은isoflavone의 함량을 보인 품종은 아가 3호로써 저장후의 isoflavone 함량은 11,705㎍/g이었다. 본 연구에서는 콩나물 저장기간 동안 수분공급이 지속적으로 이루어겼기 때문에 콩나물이 계속 성장한 것으로 생각된다. 따라서 저장기간 동안 온도처리를 달리하여 isoflavone의 함량을 증가시키는 보다 확실한 방법을 확립하기 위해서는 더 많은 연구가 이루어져야 할 것으로 생각되어진다. To obtain food materials of high isoflavone content from soy-sprouts, 8 soy-sprout varieties, Aga 1, Aga 2, Aga 3, Aga 4, Pungsannamulkong, Eunhakong, Jangkikong and Bosugkong, were grown into soy-sprouts for 7 days under light condition and stored for 5 days at 6 different temperatures; 3, 6, 9, 20, 30, and 40℃ in the dark. The isoflavone content of 7 days grown sprout varieties were highest in the order of Aga3>Aga 1>Aga 2>Aga 4>Jangkikong>Bosugkong>Eunhakong>Pungsannamulkong. The highest isoflavone content of Aga 3 was 4,619 ㎍/g. The isoflavone content of soy-sprouts showed much varietal differences depending on the storage temperatures. Comparative high isoflavone content was obtained at storage temperatures of 6℃ and 20℃ while most of varieties showed low isoflavone content at 9℃ and 30℃. No constant trend in isoflavone content for the tested varieties along with the days to storage but most of varieties showed the highest isoflavone content in 3 days of storage. On the contrary, Aga 4 and Jangkikong showed high isoflavone content even at 5 days of storage . The comparatively high isoflavone content for 4 varieties including of Aga 3 out of 8 varieties was obtained from the treatment of one day storage at 20℃. Out of all treatments, the highest isoflavone content was obtained from one day storage at 20℃ for Aga 3 and the content was as high as 11,705 f-㎍/g. In this experiment, soy-sprouts were believed to be made continuous growth during the storage because the sprouts were being dipped in water during the temperature treatment to protect soy-sprouts from drying. Thus, it is inferred that additional researches should be made to establish better method to increase isoflavone content in soy-sprouts during the storage.

혈액투석 환자에게서 발생한 재생불량성 빈혈 1예

정지용,윤나라,강대웅,오종찬,장재현,선길홍,박경희,정종훈,김현리 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.1

Aplastic anemia is a disease characterized by pancytopenia in the peripheral blood and hypocellular bone marrow with the fatty infiltration. The causes of the acquired aplastic anemia were usually related to drugs and immune-related diseases. A 34-years old man was admitted due to general weakness. He has been going hemodialysis for 2 years because of end stage renal disease (ESRD) due to chronic glomerulonephritis. At admission, laboratory tests showed hemoglobin 6.2 g/dL, hematocrit 18.0 %, WBC 5,710mm (neutrophil 71.8%, lymphocyte 19.1%, monocyte 5.9%), reticulocyte 1.9%, platelet 93,000/mm, Fe 12.8 ug/dL, TIBC 204 ug/dL, ferritin 941.47 ng /ml, haptoglobin 0.72 g/L, vitamin B12 508.17 pmol/L, folate 24 ng/mL, total protein 6.54 g/dL, albumin 3.76 g/dL, Alk. pohsphatase 79 IU/L, AST 30.0 IU/L, ALT 39.7 IU/L, total bilirubin 0.57 mg/dl, BUN 79.4 mg/dl and creatinine 10.18 mg/dl. Peripheral blood smear showed the normocytic normochromic anemia with anisocytosis. Anemia was diagnosed but it was irresponsive to the recombinant human erythropoietin (EPO) and blood transfusion. In the bone marrow aspiration smear were there the hypoplastic myeloid and erythroid precursors. The bone marrow biopsy section showed the hypoplasia of all components (10-20%) and the fatty infiltration. We have experienced one case of the idiopathic aplastic anemia in a patient going through hemodialysis and we just report it with documentary records. 저자들은 혈액 투석 중인 환자에서 약물, 면역계 이상등의 원인을 발견할 수 없었음에도 재생 불량성 빈혈이 발생한 1예를 경험하여 문헌 고찰과 함께 보고하는 바이다.

창의성 향상을 위한 프로그래밍 교육 방안

김종훈,정원희 제주교육대학교 초등교육연구소 2005 초등교육연구 Vol.10 No.-

심박변이도를 이용한 당뇨병성 합병증의 평가

김종문,김종훈,이정모,정진상,이인식 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.14 No.-

Objective: The purpose of the present study was to investigate relationship between autonomic neuropathy and diabetic complication through analysis of HRV(heart rate variability) of diabetic patients, and ultimately to investigate effectiveness of HRV analysis on evaluation and prediction of diabetic peripheral neuropathy. Method: We performed electromyogram, blood analysis and HRV test with 30 diabetic patients. By comparing SDNN(standard deviation of RR interval) of HRV, we analyzed the relationship between this parameter and duration of diabetes, age, and results from electromyogram. Results: 1) Averages of patients' age and the duration of diabetes were 56.12 ± 10.37, 14.58 ± 10.16, respectively. The relationship between each parameter of HRV was not significant(r<0.4). 2).When patients were classified according to the presence or the absence of H-reflex abnormality, peripheral neuropathy, gastrointestinal symptom When patients were classified by the degree of H-reflex abnormality and BUN(blood urea nitrogen), SDNN had reverse relationship to each other. Conclusion: Our results demonstrate HRV test shows statistically significant differences according to the absence or presence of diabetic peripheral neuropathy, gastrointestinal symptom. Therefore, we expect HRV analysis might be used as an efficient method to detect diabetic peripheral neuropathy, gastrointestinal disease, since it is relatively easy and convenient for both doctor and patient.

淸肝散이 急性 Ethanol 中毒에 흰쥐의 肝損傷에 미치는 影響

곽익훈,김종대,정지천,신억섭 한국한의학연구원 1996 한국한의학연구원논문집 Vol.2 No.1

Chunggansan(淸肝散) was tested for the effects on detoxication mechanism of alcohol. Chunggansan was treated firstly into samples, and then ethanol intoxicated animal models were set with them. In vitro, the level of lipid peroxide in tissue of liver proportionally decreased with the level of concentration of extract prepared from Chunggansan. In vivo, after the extract was administered to the animal model for seven days, the level of lipid peroxide in liver dependently decreased in proportion of concentration. The glutathione percentage purposely induced acute ethanol intoxicated samples, followed by Chunggansan pre-medicating administration, increased in compare with the group treated with only ethanol. Also, the enzyme activities of ALT, AST, and r-GTP in liver decreased.

BGA패키지에서의 무연솔더 접합부 전단 시험법의 최적화

김종웅,문정훈,서창제,정승부 대한금속ᆞ재료학회 2006 대한금속·재료학회지 Vol.44 No.3

비복신경이식을 이용한 긴 거리의 말초신경 결손부 수복

이종호,이세영,김명진,이은진,안강민,김성민,최원재,명훈,황순정,서병무,최진영,정필훈 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.2

The surgery of oral and maxillofacial area poses the risk of cranial nerve damage such as trigeminal nerve or facial nerve. Inferior alveolar nerve is prone to damage in the third molar extraction, implant installation, orthognathic surgery, open reduction and rigid fixation, and tumor ablation surgery. On the other hands,facial nerve is likely to be damaged or sacrificed with trauma or parotidectomy. In case of inferior alveolar nerve injury, the incidence is reported to be about 1.3%. The nerve function will almost recover in minimal damage, but it won't recover at last in total damage of a part of nerve unit. In latter cases, nerve regeneration in intended by allograft as nerve substitute or various route of merve condit. But the recovery with autograft is believed to be most relialbe mrthod in the rapair of long-span(longer than 15㎜)nerve defect. We have performed autologous sural nerve graft in the repair of nerve defect, which is caused by resection of benign or malignant tumor. Hereby we report the method of nerve harvesting, recovery of defected peripheral nerve and the complications of donor site with the discussion of sural nerve anatomy.