차량차체 네트워크에서 CAN 신호 게이트웨이 설계

한준수(Jun-Soo Han),강기호(Ki-Ho Kang) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.6

The automobile networks consist of the communication bus systems which become independent and heterogeneous each other. Most often, the CAN buses are implemented in a car in order to connect all the electronic control units in various ways. Thus, some gateways are necessary for exchanging the useful information between electronic control units on the buses. The automobile body networks group is divided into two kinds on a large scale, namely the low-speed bus and the high-speed bus. To interchange messages between the two, a CAN signal gateway is designed and implemented in a miniature scale. A network analyzer (called “Vehicle spy”) and an oscilloscope monitor network situation to confirm the due operation of CAN signal gateway. The efficiency of the designed gateway is evaluated. The more message thread increased, the more efficiency decreased.

HFO-1234yf를 적용한 가정용 냉동/냉장고의 성능 특성 최적화에 대한 실험적 연구

한준수(Jun Soo Han),이장석(Jang Seok Lee),이명렬(Myung Ryul Lee),전시문(Si Moon Jeon) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7

HFO-1234yf is a promising alternative for R-134a to reduce green-house effect. It has a significantly low GWP(global warming potential) of 4, compared to 1,430 for R-134a. In this study, the performance of HFO-1234yf was evaluated in a household freezer/refrigerator under AHAM(Association of Home Appliance Manufacturers) standard condition. Test results show that HFO-1234yf has similar cycle performance except cooling speed test for same diameter of 0.75㎜ capillary tube with R-134a cycle. However, increase of capillary tube diameter can improve the cooling speed of refrigerator.

신체질환이 있는 노인환자의 우울증상

한준수(Jun-su Han),이현수(Hyeon-Soo Lee),이성근(Seong-Keun Lee),정인과(In-Kwa Jung) 대한노인정신의학회 1997 노인정신의학 Vol.1 No.1

연구배경: 본 연구는 신체질환이 있는 65세이상의 노인환자에서 신체질환에 의한 신체적 기능 장애의 심각도가 우울증상 및 우울장애에 미치는 영향을 평가하고자 하였다. 방 법: 150명의 신체질환이 있는 노인환자중에서 MMSEK상에서 19점이하인 12명을 제외한 138명에게 인구사회학적인 변인, 건강특성 변인 및 신체질환에 의한 기능장애의 정도를 평가한 후 우울검사들(MADRS, KGDS, GDS)을 실시하였으며, 추가로 65명의 신체질환이 있는 노인환자중에서 MMSE-K상에서 19점이하인 4명을 제외한 61명에게 인구사회학적인 변인, 건강특성변인 및 신체질환에 의한 기능장애의 정도를 평가한 후 DSM-Ⅳ 진단기준에 의거한 임상진단과 KGDS를 실시하였다. 결 과: 대상군에서 우울증상을 나타내는 경우는 KGDS, GDS, MADRS에서 각각 50.0%, 36.2%, 35.5%였다. 신체질환에 의한 기능장애가 심각한 집단은 상대적으로 장애가 적은 집단에 비하여 KGDS, GDS, MADRS에서 유의한 높은 점수를 보였다. 신체질환에 의한 기능장애의 심각도는 모든 우울검사들과 유의한 정적인 상관관계를 보였다. 우울검사들과 상관관계를 보이는 변인들에서 신체질환에 의한 기능장애의 정도가 모든 우울검사들을 가장 잘 설명해주는 변인이었다. 추가로 시행된 연구에서 대상군의 19.7%가 주요우울장애, 18%가 기분부전장애를 나타냈으며, 주요우울장애와 기분부전장애로 진단된 환자군이 우울장애로 진단되지 않은 환자군에 비하여 FDRPT와 KGDS점수가 유의하게 높은 것으로 나타났다. 결 론: 신체질환을 가진 노인환자에서 우울증상 및 우울장애의 빈도는 일반적인 노년기의 우울증상 및 우울장애의 빈도보다 높았으며, 신체질환에 의한 기능장애가 우울증상에 가장 큰 영향을 미치는 것으로 나타났다. 그러므로 신체질환이 있는 노인환자에서 우울증상을 감별하는 것은 상당히 중요한 일이라고 생각된다. 부가적으로, KGDS는 다른 우울검사들과 유의한 상관성을 가지며, 우울증상 및 우울장애에 대한 높은 진단변별력을 가지는 것으로 추정되어졌다. 그러므로 KGDS가 신체질환을 가지는 노인환자에서 우울증의 선별검사용으로 유용한 검사방법이라는 것과 미래에 체계적인 연구가 필요하다는 점을 제안한다. Objectives:This study aimed to evaluate the effects of severity of functional disability, caused by physical illness, on the depressive symptoms and depressive disorders of the elderly patients (above 65 year-old) with physical illness. Method:Complete medical and psychiatric evaluations were achieved on 138 patients, except the 12 patients, who were severely cognitively impaired (MMSE-K score;below 19), of the 150 elderly patients (above 65 year-old) with physical illness. Sociodemographic data and health characteristic data were systematically collected, and the severity of functional disability caused by physical illness was evaluated. Depression scales (KGDS, GDS, MADRS) on 138 elderly patients were executed. In addition, based on the 61 patients of the 65 elderly patients (above 65 years old) with physical illness, except 4 patients who were severely cognitively impaired (MMSE-K score; below 19), sociodemographic data and health characteristic data were collected. The clinical diagnosis by DSM-IV diagnostic criteria and KGDS on 61 elderly patients were performed, and their functional disability caused by physical illness was evaluated. Results:The frequency of depressive symptoms showed 50.0%, 36.2%, and 35.5%, respectively in KGDS, GDS, and MADRS. The patients with severe functional disability caused by physical illness-compared with those with mild functional disability-had significantly higher score on the depression scales (KGDS, GDS, MADRS). The correlation between severity of functional disability caused by physical illness and depression scales was highly positive. Severity of functional disability caused by physical illness was the strongest contributor to the depression scales. In the additional study, 19.7% of patients were diagnosed as major depressive disorder, 18% of them as dysthymic disorder, and depressive disorder (major depressive disorder & dysthymic disorder) group-compared with nondepressive disorder group-showed significantly higher score on the FDRPT and KGDS. Conclusion:The frequency of depressive symptoms and depressive disorder in elderly patients with physical illness was higher, compared with those in general elderly people. Functional di-sability caused by physical illness most highly influenced on depressive symptoms. Thus, it is important to discriminate whether the elderly patients with physical illness have depressive symptoms or not. In addition, we assumed that KGDS was not only highly correlated with other depression scales (GDS, MADRS), but also had the high diagnostic power of dis-crimination for depressive symptoms and depressive disorder. This study suggested that KGDS was available in screening depression in the elderly patients with physical illness. It was necessary to study systematically the availability of KGDS in the future.

한국형 노인우울검사 보호자용(Collateral Source Version of the Korean Form of Geriatric Depression Scale:CS-KGDS)의 타당도 연구

이현수(Hyeon-Soo Lee),유영수(Young-Soo You),한준수(Jun-Soo Han),곽동일(Dong-Il Kwak),정인과(In-Kwa Jung) 대한노인정신의학회 1998 노인정신의학 Vol.2 No.2

In order to examine elderly depression in the elderly that too weakened cognitively, and physically to check depressive symptoms reliably, the authors deviced collateral source version of elderly depression scale and tested it's validity. Sixty elderly depression patients and forty-eight old person in normal group completed the KGDS (Korean Form of Geriatric Depression Scale), and their collateral source (CS) completed a CS version of the KGDS (CS-KGDS). The differences of CS-KGDS means was signified at α =.001 level (patients group mean=18.33 (4.71), control group mean=7.60 (5.25), t=11.18). The values of Cronbach's α and Split-half reliability were .88 and .81 respectively, and correlational coefficent with KGDS was .68. On factor analysis, 5 factors were extracted. They were labeled ‘Physical weakening and decreased vitality’(factor 1), ‘Emotional discomfort’(factor 2), ‘Negative thinking and Unhappiness feeling’(factor 3), ‘Cognitive dysfunction’(factor 4), ‘Decreased social interest and activity’(factor 5), which congruous with internal structure of KGDS. The result of discrimination analysis showed 87.09% of hit ratio, and suggested the score of 13 as optimal cut-off score. This cut-off score was identical to that of KGDS. Conclusively, CS-KGDS could be a useful tool for evaluaion of elderly depression instead of KGDS in such case that KGDS can not be administered reliably. 치매가 의심될 정도로 인지적, 신체적으로 약화된 노인들에서 우울증을 효율적으로 검사하고자 보호자용을 만들어 신뢰도와 타당도를 검증하고자 하였다. 연구대상은 노인우울증 환자 60명, 신체적으로 건강하고 정신과적 질환이 없는 정상노인 48명과 그 보호자들이었다. 노인들에게는 KGDS(Korean form of Geriatric Depression Scale)을 실시하였고 보호자들에게는 KG DS의 보호자용(CS-KGDS;Collateral Source Version of KGDS)을 실시하였다. 연구 결과, CS-KG DS는 KGDS와 마찬가지로 우울증 환자집단[Mean(SD)=18.33(4.71)]과 정상집단[Mean(SD)=7.60(5.25)]에서 유의하게 점수의 차이를 보였다(t=11.18, p<.001). KGDS와 높은 상관을 보였고(r=.68, p<.001) 내적일치도(α=.88), 반분신뢰도(.81) 모두 만족스러운 수준이었다. 요인분석결과'신체적 약화와 활력감소','정서적 불편감','부정적 사고 및 불행감','인지적 기능저하','사회적 관심과 활동저하'의 5개 요인이 밝혀져 KGDS의 5개 요인과 동일한 내적 구조를 보였다. 판별분석결과 KGDS와 전체 판별률은 87.09%였고 최적절단점수는 KGDS와 같은 13점으로 밝혀졌다. 이상에서 볼 때, CS-KGDS는 기능이 좋지않아 검사를 실시하기 어려운 노인들의 우울증을 평가할 때 대체용 검사로 신뢰롭게 쓰일 수 있을 것으로 생각된다.

HFO-1234yf를 적용한 가정용 냉동/냉장고의 성능평가

이장석(Jang Seok Lee),한준수(Jun Soo Han),이명렬(Myung Ryul Lee),전시문(Si Moon Jeon) 대한기계학회 2011 大韓機械學會論文集B Vol.35 No.7

R-134a 대체 냉매인 HFO-1234yf의 성능을 가정용 냉동/냉장고에서 평가하였다. AHAM(Associ- ation of Home Appliance Manufacturers) 규격에 의거하여 HFO-1234yf를 Drop-in하여 냉매 봉입량 시험, Pulldown 시험, 냉각속도 시험 그리고 소비전력 시험을 수행하였으며, R-134a 실험 결과와 비교하였다. 43℃ 고온 가혹 조건에서도 시험을 수행하였다. 결과적으로 HFO-1234yf 냉매는 Cycle 성능면에서는 R-134a와 유사하나, 냉각속도는 모세관경을 더 크게 변경시켜야 한다. The performance of HFO-1234yf as a substitute for R-134a was evaluated in a household freezer/refrigerator. A series of tests such as 'refrigerant charging test, pull-down test, cooling speed test, and energy consumption test were carried out under the AHAM (Association of Home Appliance Manufacturers) standard. The results of a drop-in test were compared with those of a test conducted using R-134a. A test under a severe ambient air condition (43℃) was also conducted. The result shows that the refrigeration cycle performance of HFO-1234yf is as good as that of R-134a ; however, the diameter of capillary tube should be increased in order to improve its performance in the cooling speed test.

우리나라 제비 생태계의 변화에 대한 동태성 분석 : 왜 제비는 20년 사이 100분의 1로 줄어들었는가?

고장규 ( Jang Kyu Ko ),한준수 ( Jun Soo Han ),박영선 ( Young Seon Park ),최남희 ( Nam Hee Choi ) 한국시스템다이내믹스학회 2010 한국시스템다이내믹스 연구 Vol.11 No.3

The ecology of house swallow is closely related to the humans life because their life depend on the human settlements conditions and environments. 30 years ago house swallows are very common at the country side, but recently they are very rare. Almost the number of house swallows decrease as 1 of hundredth during 20 years. Why this dramatic population decrease are happening in the ecology of house swallow? The Population size impacted by many factors such as nesting, breeding, feeding, returning. The objective of this paper is to analyse the population dynamics of the ecology of House Swallow. This paper focuses on the important ecological changes-nests, foods, and return rates from wintering area-associated with recent country side development. In this paper, we explore the feedback loops of population dynamics and simulate the policy scenario model.

제주도 갯금불초(Wedelia prostrata Hemsl.) 자생지의 환경특성

김경아 ( Kyung Ah Kim ),한준수 ( Jun Soo Han ),천경식 ( Kyeong Sik Cheon ),유기억 ( Ki Oug Yoo ) 한국환경생태학회 2013 한국환경생태학회지 Vol.27 No.1

본 연구는 산림청의 희귀식물 중 취약종으로 구분되어 있으며 제주도에만 제한적으로 분포하는 갯금불초의 자생지 환경을 조사하여 보전 및 복원 시 기초자료를 제공하고자 하였다. 조사결과 갯금불초의 자생지는 경사 1-40°의 해안사구에 위치하고 있었으며, 대부분 전사구를 중심으로 띠모양의 군락을 형성하고 있었다. 식생분석결과 7개 지역의 19개 방형구 내에서 조사된 관속식물은 총 38분류군이었다. 중요치는 갯금불초가 44.77%로 가장 높았으며, 다음으로는 순비기나무(13.32%), 좀보리사초(6.75%), 갯메꽃(4.24%), 갯쑥부쟁이(2.54%), 사철쑥(2.43%) 등이 높은 값을 보여 이 분류군들이 갯금불초와 친화도가 높은 것으로 판단된다. 종다양도는 평균 0.79로 산출되었으며, 우점도와 균등도는 각각 0.25와 0.67이었다. 토양분석결과 포장용수량은 4.51%, 유기물함량은 3.37%, pH는 8.17, 유효인산함량은 1.33㎍ /g, 그리고 전기전도도는 802.01㎲/㎝로 측정되었다. The habitats characteristics of Wedelia prostrata were investigated to compile basic data for conservation and restoration. Natural habitats were located at inclinations of 1-40°. Thirty eight vascular plants were identified from 19 quadrats in 7 habitats. The importance value of Wedelia prostrata is 44.77% and 5 highly ranked species such as Vitex rotundifolia(13.32%), Carex pumila(6.75%), Calystegia soldnella(4.24%), Aster hispidus(2.54%) and Artemisa capillaris(2.43%) are considered to be an affinity with Wedelia prostrata in their habitats. Species diversity was 0.79, and dominance and evenness were found to be 0.25 and 0.67, respectively. Average field capacity was 4.51%, the organic matter was 3.37%, pH was 8.17, available phosphorus was 1.33 ㎍/g, and electrical conductivity was 802.01㎲/㎝.

춘천 남서부지역의 식물상과 식생

이혜정 ( Hye Jeong Lee ),한준수 ( Jun Soo Han ),이우철 ( Woo Tchul Lee ),유기억 ( Ki Oug Yoo ) 한국환경생태학회 2008 한국환경생태학회지 Vol.22 No.4

춘천 남서부지역의 식물상과 식생을 2006년 3월부터 2007년 9월까지 조사하였다. 그 결과 관속식물은 111과 448속 766종 2아종 119변종 27품종으로 총 914분류군이 자생하는 것으로 조사되었다. 조사된 914분류군 중 특산식물은 33분류군이며, 희귀식물과 멸종위기 식물은 각각 26분류군과 4분류군이었고 식물구계학적 특정식물종은 152분류군으로 조사되었다. 한편 귀화식물은 46분류군이 분포하는 것으로 집계되었으며, 생활형 조성은 H-R5-D1-e type으로 나타났다. 조사된 914종류의 용도는 식용이 308종류(33.7%)로 가장 높았고 약용 276종류(30.2%), 목초용 148종류(16.2%), 관상용 127종류(13.9%), 목재용 36종류(3.9%), 섬유용 25종류(2.7%), 그리고 공업용이 4종류(0.4%)로 나타났다. 식생분석결과 춘천 남서부 지역의 식생은 5개의 군집, 즉 거제수나무-고로쇠나무 군집, 신갈나무 군집, 신갈나무-굴참나무 군집, 신갈나무-떡갈나무 군집, 그리고 소나무 군집이 분포하는 것으로 나타났다. The flora and vegatation of the Southwest Chuncheon area were investigated from March, 2006 to September, 2007. The vascular plants were summarized as 914 taxa; 111 families, 448 genera, 766 species, 2 subspecies, 119 varieties, and 27 forma. Among the investigated 914 taxa, 33 Korean endemic, four endangered, and 26 rare plants were included. Based on the list of the species of specially designated plants by the Ministry of Environment, 152 taxa were recorded in the investigated area. The naturalized plants were 46 taxa, and life form spectra was H-R5-D1-e type. 914 taxa listed consists of 308 taxa(33.7%) of edible plants, 276 taxa(30.2%) of medicinal plants, 148 taxa(16.2%) of pasture plants, 127 taxa(13.9%) of ornamental plants, 36 taxa(3.9%) of timber plants, 25 taxa(2.7%) of fiber plants and 4 taxa(0.4%) of industrial plants. The vegetation of Southwest Chuncheon area were classified five communities as Betula costata-Acer mono, Quercus mongolica, Quercus mongolica-Quercus variabilis, Quercus mongolica-Quercus dentata, and Pinus densiflora.

연구논문 : 노랑무늬붓곷(Iris odaesanensis Y.N.Lee) 자생지의 환경특성

천경식 ( Kyeong Sik Cheon ),한준수 ( Jun Soo Han ),서원복 ( Won Bok Seo ),김경아 ( Kyung Ah Kim ),유기억 ( Ki Oug Yoo ) 한국환경과학회 2010 한국환경과학회지 Vol.19 No.11

This study intended to investigate environmental factors including soil and vegetation in order to understand the environmental and ecological characteristics of 12 different habitats of Iris odaesanensis. These habitats, according to investigations, are mostly located at elevation of 280 m to 1,555 m with angles of inclination ranging from 2 degree to 30 degrees. A total of 273 vascular plants are identified in 23 quadrates of 12 habitats. Dominant species of woody plants in 12 habitats are represented as Quercus mongolica in the tree layer (TI) and the subtree (T2) layer, and Lespedeza maximowiczii, Lindera obtusiloba, Rhododendron schlippenbachii the shrub (S) layer. The importance value of Iris odaesanensis is 9.65%, as regards the herbaceous layer, and 6 highly ranked species such as Carex siderosticta (3.92%), Meehania urticifolia (2.67%), Spodiopogon cotulifer (2.58%), Aconitum pseudolaeve (2.51%), Carex bostrychostigma (2.28%) and Disporum smilacinum (2.09%) are considered to be an affinity with Iris odaesanensis in their habitats. The degree of their average species diversity is 1.32, and that of dominance and evenness are 0.08 and 0.89, respectively. The type of soil is sandy loam and loam, and the average field capacity of soil is 28.31%. Their average organic matter is 16.71%, soil pH 5.29, and available phosphorus is 9.29%. Correlation coefficients analysis based on environmental factors, vegetation and soil analysis shows that the coverage of Iris odaesanensis is correlated with pH and dominance, and species richness is positive related with species diversity.

울릉도 미역고사리(Polypodium vulgare L.) 자생지의 입지환경특성

천경식 ( Kyeong Sik Cheon ),한준수 ( Jun Soo Han ),김경아 ( Kyung Ah Kim ),옥길환 ( Kil Hwan Ok ),유기억 ( Ki Oug Yoo ) 한국환경생태학회 2012 한국환경생태학회지 Vol.26 No.1

본 연구는 희귀식물로 지정되어 있는 울릉도 미역고사리의 자생지 환경을 조사하여 보전 및 복원 시 기초자료를 제공하고자 하였다. 조사결과 미역고사리의 자생지는 해발고도 410~748m 범위와 경사 12~80°의 암석지에 주로 생육하는 것으로 조사되었다. 식생분석결과 4개 지역의 10개 방형구내에서 조사된 관속식물은 총 66분류군이었다. 자생지 상층수목 중 교목층의 중요치는 고로쇠나무(49.52%)가 아교목층은 당마가목(28.99%)이 가장 높았으며, 관목층은 바위수국(51.99%), 섬쥐똥나무(8.82%), 너도밤나무(7.25%)가 높은 값을 보였다. 초본층은 미역고사리가 23.23%로 가장 높았으며, 다음으로는 큰두루미꽃(9.65%), 파리풀(9.23%), 관중(8.40%), 산꼬리사초(6.75%), 섬바디(5.42%) 등이 높은 값을 보여 이 종류들이 친화도가 높은 것으로 판단된다. 종다양도는 1.18로 산출되었으며, 우점도와 균등도는 각각 0.11와 0.84로 확인되었다. 토양분석 결과 토성은 사양토로 나타났으며, 포장용수량은 30.42%, 유기물함량은 17.95%, pH는 4.70으로 측정되었다. 환경특성과 식생 및 토양분석 결과에 기초한 상관분석에서는 종다양도와 종풍부도는 정의 상관관계를 보였고, 종다양도와 우점도 그리고 미역고사리의 피도와 종풍부도는 부의상관관계를 형성하였다. The habitats characteristics of Polypodium vulgare L. in Ulleung-do were investigated to compile basic data for conservation and restoration. Natural habitats were located at altitudes of 410~748m with inclinations of 12~80°. Sixty six vascular plants were identified from 10 quadrats in 4 habitats. Dominant species among the woody plants, based on importance value, were Acer pictum subsp. mono(49.52%) in the tree (T1) layer, Sorbus amurensis(28.99%) in the subtree (T2) and Schizophragma hydrangeoides(51.99%), Ligustrum foliosum(8.82%), Fagus engleriana(7.25%) in the shrub (S) layer. Importance value for members of the herb (H) layer were as follows: Polypodium vulgare 23.23%; Maianthemum dilatatum 9.65%; Phryma leptostachya var. asiatica 9.23%; Dryopteris crassirhizoma 8.40%; Carex shimidzensis 6.75% and Dystaenia takesimana 5.42%. The importance value of the last five species were high, so they were at affinity with Polypodium vulgare in their habitats. Species diversity was 1.18, and dominance and evenness were found to be 0.11 and 0.84, respectively. The soil types were sandy loam. Average field capacity was 30.42%, and the organic matter and pH were 17.95%, and 4.70. Correlation coefficients based on environmental factors, vegetation and soil analysis were showed that positive correlations between species diversity and species richness, whereas between species diversity and dominance, coverage of Polypodium vulgare and species richness were showed negative correlations.