소형민수헬기 능동진동제어시스템 개발

김남조(Nam-Jo Kim),곽동일(Dong-Il Kwak),강우람(Woo-Ram Kang),황유상(Yoo-Sang Hwang),김도형(Do-Hyung Kim),김찬동(Chan-Dong Kim),이기진(Ki-Jin Lee),소희섭(Hee-Soup So) 한국항공우주학회 2022 韓國航空宇宙學會誌 Vol.50 No.3

헬기의 능동진동제어시스템(AVCS)은 주로터로부터 발생되는 진동을 제어하며, 수동형 진동저감장치 대비 저중량으로 우수한 진동저감 성능을 발휘한다. 본 논문에서는 FxLMS 알고리즘을 기반으로 타코미터 및 가속도 센서 신호를 통해 연산된 제어명령을 하중발생기(CFG)로 전달하여 소형 민수헬기의 진동을 제어하는 소프트웨어 개발 및 검증 내용을 제시하였다. DO-178C /DO-331 표준에 따라 모델 기반 설계 기법을 통해 진동제어 소프트웨어를 개발하였으며, PILS 및 HILS 환경에서 실시간 작동 성능을 평가하였다. 특히, PILS 환경에서는 LDRA 기반 검증 커버리지를 통해 소프트웨어의 신뢰성을 향상시켰다. AVCS를 소형민수헬기에 적용하기 위해 지상/비행시험을 통해 대상 헬기 동적응답특성 모델을 획득하였다. 이를 기반으로 시스템 최적화 분석 및 비행시험을 통해 최적 성능을 발휘하는 AVCS 형상을 결정하고, STC 인증을 획득하였다. Active vibration control system(AVCS) for helicopter enables to control the vibration generated from the main rotor and has the superb vibration reduction performance with low weight compared passive vibration reduction device. In this paper, FxLMS algorithm-based vibration control software of the light civil helicopter tansmits the control command calculated using the signals of the tachometer and accelerometers to the circular force generator(CFG) is developed and verified. According to the RTCA DO-178C/DO-331, the vibration control software is developed through the model based design technique, and real-time operation performance is evaluated in PILS(processor in-the loop simulation) and HILS(hardware in-the loop simulation) environments. In particular, the reliability of the software is improved through the LDRA-based verification coverage in the PIL environments. In order to AVCS to light civil helicopter(LCH), the dynamic response characteristic model is obtained through the ground/flight tests. AVCS configuration which exhibits the optimal performance is determined using system optimization analysis and flight test and obtain STC certification.

뇌졸중 만성기에서의 indeloxazine hydrocholride의 효과

유경무,박영춘,이상도 啓明大學校 醫科大學 1990 계명의대학술지 Vol.9 No.3

This study was conduced to evaluate the efficacy of indeloxaziine hydrochloride(Elen) on chronic stage of cerebrovascular diseases(CVD). Total 38 patients with chronic stage of CVD(over 1 year history of CVD), 19 cerebral infarction and 19 cerebral hemorrhage, were given indeloxazine hydrochloride 20mg 3 times daily for over 3 months(3-6mos). The efficacy of the drug was evaluated by itemized neurological check lists in each month period. The results were summarized as follows. 1. There was significant improvement of spontaneity and emotional problems in each subsequent month after indeloxazine hydrochloride administration in a group of cerebral infarction. 2. There was also significant improvement of spontaneity, abnormal behaviors and emotional problems in each subsequent month after drug adminstration in a group of cerebral hemorrhage. 4. The drug was safe but rarely pruritic skin rashes and mild gastrointestinal disturbance were observed as adverse reactions.

민들레 추출액 농도에 따른 민들레 코팅쌀밥의 품질에 관한 연구

유경미,이연경,김세희,황인경,이부용,김성수,홍희도,김영찬 한국조리과학회 2005 한국식품조리과학회지 Vol.21 No.1

Washed rice was coated by spraying aqueous dandelion (Taraxacum officinale) extracts at 20, 30, 40 'Brix and dried at room temperature. The coating procedure was conducted 5 mL/min for 10min. Property changes in the dandelion coated rice and un-coated cooked rice were observed during 2 days of storage. Increasing the coating concentration was associated with lower color values (L, a value) and moisture contents. Sensory and texture properties generally decreased in the cooked rice coated with dandelion more than the control (non-coated rice). But, D-20(20 °Brix of the dandelion concentration) resulted in better textural properties and s ensnry scores for hardness and overall acceptability in cooked rice. Compared to the control, the washed rice roated with 20 °Brix for 0 and 2 days showed better quality in sensory activities, a lower gel consistency and better textural activities. It was concluded that the optimum coating ration of rice and added dandelion extract for cooking were 20 °Brix and 5% respectively, in proportion to the total weight of raw rice.

두개강내압 측정시 경막외 측정치와 뇌실내 측정치와의 비교분석

유도성,김달수,조경석,박춘근,강준기 대한신경외과학회 1999 Journal of Korean neurosurgical society Vol.28 No.6

정신분열병의 임상적 고위험군의 특징 : '서울청년클리닉'의 자연 추적 관찰 예비연구

유소영,이경진,강도형,이승재,하태현,위휘,이애라,송지연,김성년,권준수 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.1

Objectives : The aims of this study were to identify the intake and following process for subjects at high risk of transition to schizophrenia and to examine the neurocognitive, social, and emotional functions of the subjects compared with healthy controls. Methods : Symptomatic individuals judged at high risk for schizophrenia ('clinical high risk') within Youth Clinic were assessed and followed up. They performed a neurocognitive function test, a social function test and an affective function test. Twenty healthy controls were recruited in this study. Results : Among eighty-two subjects contacted through the Youth clinic, sixteen subjects were judged as the clinical high risk group. Fourteen subjects among the clinical high risk group showed deficits in several domains of neurocognitive functions, such as visual recall memory, verbal short term memory and executive function. Social and affective functions are also impaired in the Cli-nical high risk group compared with healthy controls. Two of 15 subjects (13%) developed a psychotic disorder within 6 months. Conclusion : This study illustrates the state of follow-up study for a clinical high risk group. Despite low numbers and short durations, some impairment of several functions in the clinical high risk group suggests possible predictors of psychosis.

위 MALT 림프종에서 다발성 림프절 전이로 오인된 동시성 림프절 결핵 1예

김성은,김규종,김도현,송준영,문대성,장리라,유찬희,문원,박무인,박선자,김영옥 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2

28세 남자가 내시경적 점막절제술을 통해 저등급 위MALT 림프종으로 진단되었다. 병기설정을 위해 18F-FDG PET 검사를 시행하였고 우측 쇄골상부, 우측상/하부 기관주위, AP window 부위에 강한 섭취가 관찰되어 전이성 림프절로 판단하였다. 그러나, 우측 쇄골상부 림프절에서 시행한 절제생검에서 만성육아종성염증소견이 관찰되었고 조직의 결핵 중합효소연쇄반응에서도 양성 반응을 보였다. 2개월간 항결핵제의 사용 후 시행한 추적 컴퓨터단층촬영 검사에서 림프절 크기의 감소를 보여 최종적으로 위 MALT 림프종에서 광범위 림프절 전이로 오인된 동시성 림프절 결핵으로 진단되었다. A 28-year-old man was diagnosed as gastric MALT lymphoma in diagnostic EMR (endoscopic mucosal resection). He subsequently underwent an 18F-FDG PET. 18F-FDG PET showed intense multifocal uptake in right supraclavicular, right upper and lower paratracheal, and AP window areas that was considered radiologically to represent widespread metastatic lymphadenopathy. Excisional biopsy of a supraclavicular lymph node, however, revealed chronic granulomatous lymphadenitis with a positive reaction of Tb-nested PCR. After antituberculosis treatment for 2 months, a follow-up CT scan showed complete resolution of the lesions. Intense 18F-FDG uptake could be due to an infectious process such as synchronous tuberculous lymphadenitis. Therefore, this could mimic a malignant condition such as lymphoma with extensive lymph node metastasis due to a false-positive finding, which may lead to a misdiagnosis.

대화형 다목적 의사결정기법의 수송의사결정 모형에의 적용

이상도,유병철 東亞大學校 大學院 1990 大學院論文集 Vol.15 No.-

The decision making problem is the course to select the best solution from feasible solution, all the alternatives considered, Recently, the above problem has been concerned about multiple objective decision making as the optimized course of the complicated decision making included multiple criteria or multiple objective and regared this thesis as the most active parts. This thesis has been studied interactive multiple objective decision making to get the most favorite preference solution, taking into consideration algorithm taken the efficent solution. Presenting the interactive algorithm which can get the optimization solution not to use preference funtion in the efficient solution groups, we have investigated the more reliable optimization in searching for the final solution. We have tried the application for transportation problem decision making model into having the capability and applicability for practical purposes. The interactive multiple objective decision making presented in this thesis, would be able to apply the decision making under the certainty and finite for the feasible alternatives, also in complianace with the preference on decision maker. In the merit problems, the above theme will be necessitated not for prior information but for progressive articulation of preference information. But the interactive approach in the general flaws would be troubled for the defect on preference information induced in the interactive changable process of the decision maker. Because of including the uncertainty for many decision making problems in the expected study, we would tried to have the application for fuzzy set theory and interactive method about the practical problems.

혈당 측정에 있어서 반사광 비색법과 전기 화학 전극법의 비교

황유성,이도훈,우재근 충북대학교 의과대학 충북대학교 의학연구소 1995 忠北醫大學術誌 Vol.5 No.1

당뇨병환자에서 적절한 혈당을 유지하기 위한 목적으로 시험지봉 검사 방법이 1970년대 초 처음으로 개발된 이후 많은 자가 혈당기들이 고안되어 사용되고 있으며, 대부분이 반사광 비색법을 이용한 자가 혈당 측정기로 현재 국내에는 Glucometer(Ames), Glucoscan(Eiken), One TouchTRM Ⅱ(Lifescan), Accu-check Ⅲ(BM)등이 사용되고 있다. 저자들은 본원에서 이미 사용하고 있었던 반사광 비색법을 이용한 시험지봉으로 LIFESCAN사의 One TouchTM Ⅱ와 전기 화학 전극법을 이용한 Medisense사의 CompanionTM 2에 대하여 정밀도, 직선성, 비교방법과의 상관관계 및 혈액량과 헤마토크리트에 의한 영향, 관찰자간의 변이, 항응고제가 미치는 영향 등 측정에 영향을 미치는 여러 인자들에 대하여 평가를 시행하였다. 검사일내 정밀성(within day precision)은 두 기기 모두 5% 정도이었고, 검사일간 정밀성(day-to-day precision)은 CompanionTM 2가 3.14%∼6.53%, One touchTM Ⅱ가 4.69%∼8.13%의 변이계수를 보였다. 두 기기 모두 직선성이나 비교방법과의 상관관계가 우수하였다. CompanionTM 2와 One touchTM Ⅱ사이의 상관관계는 y=1.040x+21.679, r=0.9716이었다. 두 기기 모두 혈액량, 관찰자, 항응고제에 의해서는 영향을 받지 않았으며, 헤마토크리트에 의해서는 헤마토크리트가 낮을 때는 높은 혈당치를, 헤마토크리트가 높을 때는 낮은 혈당치를 나타냈다. The purpose of this study is to assess two monitors of blood glucose : One touch?? Ⅱ(Lifescan Inc.), which is using reagent strips by reflectance photometry and CompanionTM 2(Medisense Inc.), which is using electrochemical electrode method. Glucose was determined on capillary and venous blood samples from 70 adult diabetics by three different methodologies : One touchTM Ⅱ, CompanionTM 2 portable glucose meters (capillary) and the Hitachi 7150 analyzer(venous), which is using hexokinase method. In within-run precision studies for One touchTM Ⅱ and CompanionTM 2, coefficient variations (CVs, %) were 1.92∼5.09, 2.95∼4.79 at three different levels, respectively. In between-day percision studies for One touchTM Ⅱ and CompanionTM 2, CVs(%) were 4.69∼8.13, 3.14∼6.53 at three different levels, respectively. The linearity studies revealed r=0.9996 in One touch?? Ⅱ, r=0.9977 in CompanionTM 2, which were satisfactory. Correlation equation and coefficient for results by One touchTM Ⅱ and CompanionTM 2 vs those by hexokinase method(x) were : y=0.8087x-8.9566(r=0.9824) for One touchTM Ⅱ, y=0.8885x+4.4992(r=0.9807) for CompanionTM 2, which were satisfactory. The glucose levels were falsely high at low hematocrit concentration and falsely low at high hematocrit concentration in both monitors. The volume of blood applied to the test strips is not critical. We concluded that "One touchTM Ⅱ" using reagent strip by reflectance photometry and "Companion?? 2" using electrochemical electrode method is suitable for self monitoring of blood glucose.

정신분열증 환자군에서 낮병원 치료가 경각심과 정신운동기능에 미치는 영향에 대한 예비 연구

오태성,김도훈,오병훈,현명호,유계준 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.6

Objectives : The aim of study is to compare the neuropsychological function changes between day hospital schizophrenic patients and out patient schizophrenic patients and to examine the effect of day hospital program on the cognitive function of schizophrenics. Methods : Neuropsychological test was done two times at discharge and 2 months later in 11 day hospital schizophrenic patients and 10 out patient schizophrenic patients by DSM-Ⅳ criteria. Vigilance, motor performance series are used as a computerized neuropsychological batteries. Results : Day hospital patients have significantly increased performance in some of motor performance series test items, but sustained attention have no tendency for increasing in day hospital patients. Conclusion : This results are preliminary. But this study suggest that psychomotor function of schizophrenics can be changed following day hospital treatment. And also we suggest that further day hospital treatment program expecially including congnitive rehabilitation needed.

多目的 意思決定問題의 對話型 技法에 관한 硏究

李相道,兪炳哲,申大赫 동아대학교 공과대학 부설 한국자원개발연구소 1989 硏究報告 Vol.13 No.2

Decision making problem is the process of selecting a possible course of action from all the available alternatives. Recently, the above problem has been considerable interest in the treatment of multiple objective in the decision making process. This paper deals with an interactive method for solving the multiple objective mathematical programming. The interactive multiple objective decision making depend on the progressive definition of the decision maker's preferences among with the exploration of the criterion space. An interactive algorithm which is efficient and useful to assist a decision maker in finding his most preferred efficient solution to the multiple objective mathematical programming is presented. To compare several technique with regard to criteria and an illustration of numerical example is included.