심박변이도(Heart Rate Variability) 측정을 통한 다한증(多汗症)환자의 자율신경계(自律神經系)기능 평가

이건영,이형구,정승기,정희재,Lee, Kun-Young,Lee, Hyung-Koo,Jung, Sung-Ki,Jung, Hee-Jae 대한한방내과학회 2008 大韓韓方內科學會誌 Vol.29 No.1

Objectives : Essential hyperhidrosis is a socially and occupationally disabling disorder. There are many suggestions that hyperhidrosis is associated with the autonomic nervous system. This study was designed to investigate the autonomic nerve system the patients with hyperhidrosis. Methods : 348 palmar and plantar hyperhidrosis patients and 20 systemic hyperhidrosis patients in the ambulatory care were investigated. All patients were inspected at the first medical examination, using the PSA of HRV. HRV was measured for 5 minutes after 5 minutes' bed rest. We checked the frequency domain analysis of HRV (i.e. TP, VLF, LF, HF and LF/HF) which were transformed into natural logarithm of patients against the standard measures of the HRV components. Then, we compared the means of patients with means and highest values of in the normal range of Koreans 1) between the patients with palmar and plantar hyperhidrosis and the healthy controls and 2) between the patients with the systemic hyperhidrosis and healthy controls, by the frequency domain analysis of heart rate variability (HRV), respectively. We then compared the results between 1) and 2). Results : The values of natural logarithmic measures of LF/HF ratio in the patients with palmar and plantar hyperhidrosis we examined were significantly higher than the values of healthy controls, but those in the patients with systemic hyperhidrosis were not higher. Conclusion : This study suggests that the autonomic nervous function did not simply increase but that the balance between sympathetic and parasympathetic nervous function did matter in patients with palmar and plantar hyperhidrosis. This balance included that the sympathetic nervous function aggravated comparatively with parasympathetic nervous function. On the other hand, we couldn't find any significance of the patients with the systemic hyperhidrosis as for the autonomic nervous function.

혼합육 가공품의 열확산도 추정에 관한 연구

이건영,박상민,안희우,조현덕,한봉호,LEE Keon-Young,PARK Sang-Min,AN Hee-Woo,CHO Hyun-Duk,HAN Bong-Ho 한국수산과학회 1993 한국수산과학회지 Vol.26 No.1

축육${\cdot}$어육 혼합 가공품의 실제 열처리 온도범위에서 적용가능한 열확산도 추정식을 제시하고자, 식염 $1.5\%$, 중합인산염 $0.2\%$, lard 및 대두단백질을 임의의 농도로 혼합한 돼지고기와 말쥐치육의 혼합육을 사용하여 열전달실험을 행하고 열확산도 추정식을 구하였다. 수분함량 $49.01{\sim}77.55\%$, 가열온도 $80.76{\sim}121.03^{\circ}C$의 범위에서 열확산도는 동일 온도에서는 수분함량의 증가에 따라, 동일 수분함량에서는 가열온도가 높아짐에 따라 커졌으며, 각 온도에서의 실측 열확산도는 다음의 식들로 나타낼 수 있었다. $${\alpha}_{p,(80.76{\pm}0.3^{\circ}C)}=0.0870{\cdot}10^{-6}{\cdot}X_w+0.0689{\cdot}10^{-6},(m^2{\cdot}s^{-1})$$ $${\alpha}_{p,(98.57{\pm}0.3^{\circ}C)}=0.0862{\cdot}10^{-6}{\cdot}X_w+0.0845{\cdot}10^{-6},(m^2{\cdot}s^{-1})$$ $${\alpha}_{p,(121.03{\pm}0.5^{\circ}C)}=0.0932{\cdot}10^{-6}{\cdot}X_w+0.0939{\cdot}10^{-6},(m^2{\cdot}s^{-1})$$ 이들 식들을 정리하여 구한 임의의 열처리 온도에서의 열확산도 추정식은 다음과 같았으며, 실측치를 기준으로 한 추정치의 최대 오차는 ${\pm}0.8\%$였다. $${\alpha}_p=(3.045+0.59{\cdot}X_w){\cdot}{\alpha}_w+0.0098{\cdot}10^{-6}{\cdot}X_w-0.4287{\cdot}10^{-6},(m^2{\cdot}s^{-1})$$ To suggest a thermal diffusivity predicting equation for mixed meat products, heat penetration curves of pork products containing filefish meat were plotted in the temperature range of $80.44{\sim}121.03^{\circ}C$, and thermal diffusivities were calculated from the heat penetration curves. The ground pork was mixed with minced filefish meat and some additives such as lard, isolated soy protein, $1.5\%$ of table salt and $2\%$ of polyphosphate to control the composition and texture of products, and then stuffed into a model can. The heat penetration curves were plotted using a thermocouple fixed at the slowest heating point of the can. At constant heating temperature, the thermal diffusivities of the products increased linearly with increasing moisture content. The values of the products with constant moisture content also increased linearly with increasing heating temperature. The thermal diffusivities of the products with moisture content of $51.47{\sim}80.20\%$ could be predicted by following equation: $${\alpha}_p=(3.045+0.59{\cdot}X_w){\cdot}{\alpha}_w+0.0098{\cdot}10^{-6}{\cdot}X_w-0.4287{\cdot}10^{-6},(m^2{\cdot}s^{-1})$$ Maximal differences of the thermal diffusivities predicted with this equation were in the range of ${\pm}0.8\%$ compared with the practical values. This equation and another predicting equation obtained from the previous study for the pork product without fish meat could be simplified as following one equation, and the maximal differences of the thermal diffusivities predicted with this equation for both products with and without fish meat were in the range of less than ${\pm}2.5\%$ $${\alpha}_p=(2.290+0.54{\cdot}X_w){\cdot}{\alpha}_w+0.0024{\cdot}10^{-6}{\cdot}X_w-0.3535{\cdot}10^{-6},(m^2{\cdot}s^{-1})$$

자이로 구동장치를 이용한 공중물체의 자세제어 및 안정화

이건영,권만오,Lee, Geon-Yeong,Gwon, Man-O 대한전기학회 2000 전기학회논문지 D Vol.52 No.1

In this paper, we propose an attitude controller for an unstructured object using CMG(Control Moment of Gyro) subsystem, which has a stabilizer function. The CMG subsystem consists of one motor for spinning the wheel and the other motor for turning the outer gimbal. While the wheel of CMG subsystem is spinning at high speed, applying force to the spin axis of the wheel leads the torque about the vertical axis. We utilize the torque to control the attitude of object in this study. For the stabilizer function, in additiion, holding the load at the current position, the power applied to the gimbal motor of CMG will be cut, which result in the braking force to stop the load by gyro effect. However, due to the gear reduction connected to outer gimbal, slow load motion cannot generate the braking force. Thus, in this study, we are willing to make a holding force by applying control power to the gimbal motor from the signal of piezoelectric gyroscopic sensor that detected the angular velocity of the load. These two features are demonstrated in experiment, carrying a beam with crane. As a result, load was started to rotate by controlling gimbal positiion and was stopped by turning off the gimbal power. Moreover, slow movement of the load was also rejected by additional control with gyroscopic sensor.

Al₂Ga_x-1A₃-GaA_s 양자우물에서 시도함수에 따른 결합에너지

이건영,이무상,전상국,Lee, Kun-Young,Lee, Mu-Sang,Chun, Sang-Kook 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.9

The binding energy in the n-type $GaAs/Al_xGa_{1-x}As$ quantum well is calculated. The shooting method, modified from the finite difference method, is used for the calculation of the subband energy level and its wave function. In order to account tot the change of the potential energy due to the charged particles, impurities and electrons, the self consistent method is employed. The wave function used for the calculation of the binding energy is assumed to be composed of the envelope function and hydrogenic 1s function. Then, the binding energies calculated by taking into account lot two different types of the hydrogenic 1s function are compared.

여객역(旅客驛)의 입지(立地)가 도시교통체계(都市交通體系)에 미치는 영향(影響) -부산역(釜山驛)의 대안별(代案別) 모의화(模擬化) 분석(分析)-

이건영,Lee, Gun Young 대한토목학회 1982 대한토목학회논문집 Vol.2 No.2

Presently, most of rail stations are situated on the surface of dowl1town and thus result in heavy traffic congestion and inefficient use of land. This paper analyzes the impact of alternative locations of station On urban traffic patterns by simulating transportation systems, of Busan city. Since location of station has long-term effects on land use and transportation, 20 years forecast of land use change, trip generation, trip distribution, modal split and network assignment was performed for each alternative, and aggregate Impacts On passenger-km and passenger-hour were computed. The result indicated that Bujeon is the most desirable location of station in terms of traffic movement, compared to the alternative locations of Sasang and existing station. Relocation of rail station, however, should be decided with broader analysis including other aspects, such as urban development, environment, construction and operating costs, etc. 여객역(旅客驛)이 대개 도심(都心)에 위치(位置)하고 있는 탓으로 도시(都市)의 성장(成長)과 함께 교통혼잡(交通混雜)의 요인(要因)이 되고 있다. 본(本) 연구(硏究)는 부산(釜山)을 예(例)로 하여 여객역(旅客驛)의 입지(立地)에 대한 대안(代案)을 설정(設定)하고 시내통행(市內通行) 및 시외연계(市外連繫) 접근통행별(接近通行別)로 통행발생(通行發生), 통행배분(通行配分), 수단선역(手段選擇), 노선배정(路線配定)의 모의실험(模擬實驗) 과정(過程)을 통하여 여객역(旅客驛)의 입지(立地)가 도시교통체계(都市交通體系)에 미치는 영향(影響)을 비교(比較) 분석(分析)하였다.

심박변이도 측정을 통한 두한증(頭汗證) 환자의 자율신경계 기능 평가

이건영,황준호,이성헌,정승연,이형구,정승기,정희재,Lee, Kun-Young,Hwang, Joon-Ho,Lee, Sung-Hun,Jeong, Seung-Yeon,Rhee, Hyung-Koo,Jung, Sung-Ki,Jung, Hee-Jae 대한한방내과학회 2006 大韓韓方內科學會誌 Vol.27 No.4

Objectives : Essential hyperhidrosis is a socially and occupationally disabling disorder. There are many suggestions that hyperhidrosis is associated with the autonomic nervous system, especiallythe sympathetic system. This study was designed to investigate the autonomic nerve system in patients with essential hyperhidrosis and healthy controls by the frequency domain analysis of heart rate variability (HRV). Methods : 17 head-hyperhidrosis patients in the ambulatory care were investigated. All were inspected at the first medical examination. using the PSA of HRV. HRV was measured for minutes after 5 minutes bed rest. We checked the frequency domain analysis of HRV (i.e. TP, VLF, LF, HF) which were transformed into natural logarithm of patients against the standard measures of the HRV components. Then we compared the values of patients with means of normal Korean subjects. Results : The values of natural logarithmic measure of HRV (LnTP, LnHF, LnLF, LnVLF) of patients With head-hyperhidrosis we examined were $6.85{\pm}1.61$, $4.93{\pm}$2.00, $5.40{\pm}1.83$, and $6.13{\pm}1.37$, respectively. None of these values were higher than means of normal subjects. Conclusions : This study suggests that the function of the autonomic nervous system does not increase in patients with head-hyperhidrosis.

임신부의 구강상태에 관한 연구

이건영,최유진 ( Gun Yeong Lee,Eu Gene Choi ) 대한예방치과·구강보건학회 1986 大韓口腔保健學會誌 Vol.10 No.1

GSIS를 이용한 연안 환경준설 관리 방안

이건영(Geon-Young Lee),강윤호(Yun-Ho Kang),이근상(Geun-Sang Lee),이삼노(Sam-No Lee),김종규(Jong-Kyou Kim) 한국마린엔지니어링학회 2007 한국마린엔지니어링학회 학술대회 논문집 Vol.2007 No.-

연안에서 해양개발, 수로유지 및 수질 개선 등을 목적을 준설이 시행되고 있다. 수질 개선을 목적으로 하는 준설공사의 경우 준설량을 정확하게 예측하는 것이 공사비용 및 공사기간을 결정하는데 매우 중요한 요소이다. 본 논문에서는 현재 국내에서 가장 널리 사용되고 있는 양단면평균법과 GSIS의 기법 중 역거리가중(Inverse Distance Weight; IDW) 보간법, Kriging 보간법 및 불규칙삼각망(Triangulated Irregular Network; TIN) 보간법을 이용하여 준설량을 산정하였다. 또한 GSIS를 이용하여 준설공사를 체계적으로 관리할 수 있는 준설관리체계 구축안을 제시하였다. In coastal areas, dredging is carried out for the purpose of ocean development, channel maintenance, water quality improvement, and so on. An accurate estimate of the dredging volume can decrease excessive amounts of uncontaminated dredging materials. Also, it can minimize the period and expense of the construction. In the moment, the end area formula method is generally used for calculating dredging volume. The position of sediment investigation is decided empirically through in-situ survey. However, in foreign countries the investigation is decided before dredging through an effective terrain analysis. This study is focused on making a management tool for marine dredging using Geo-Spatial Information System(GSIS). The Marine Dredging Management System(MDMS) developed in this study is a GSIS-based integrated system consisting of three compartments such as estimation of dredging volume, prediction of flow currents and water quality parameters.

증례 보고 : 유전성 철적모구성 빈혈 임신부의 산전관리 및 분만

이영심(Young Sim Lee),이상학(Sang Hag Lee),정인배(In Bai Chung),이영진(Young Jin Lee),이건영(Geon Young Lee),김병욱(Byung Wook Kim),한혁동(Hyuk Dong Han) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.9

Anemia is the one of the most common complications among pregnant women, but sideroblastic anemia is very rare condition. The sideroblastic anemias have diverse etiologies but have in common an impaired biosynthesis of heme in the erythroid cells of the marrow. The ringed sideroblasts in the bone marrow aspirate is diagnostic hallmark of sideroblastic anemia. We report here a prenatal care and delivery in a pregnant woman complicated by hereditary sideroblastic anemia. This patient was treated with 200mg of pyridoxine per day during entire pregnancy period and further more, 4mg of oral folate per day was supplemented because concomitant folate deficiency is frequent in case of erythroid hyperplasia. Intermittently, the transfusions of packed red blood cells were required to maintain the hemoglobin level in the 9 to 10gm/dl range. We have experienced healthy maternal and perinatal outcome.

택지개발에 따른 비용분담의 형평성에 대한 연구

이건영(Lee Gun Young) 한국도시행정학회 2005 도시 행정 학보 Vol.18 No.2

Public Land Development has been introduced and played a dominant role in supplying developed land for housings after 1980. This paper examined the expenses and benefits of participating parties in the process of land development to identify; who got and who paid and how much? It is analyzed that developer paid most of expenses of providing infrastructures in and around the developing site, and these expenses were reflected at the sale price of land. This fact resulted in jump of land and housing prices. On the contrary, governments earned much in terms of taxes, fees etc. without paying anything. The paper argues basic responsibility of local government. Finally the paper proposes the reasonable sharing of the expenses proving infrastructure and public facilities for land development among participating parties.