민간항공사 운항승무원의 건강관련 삶의 질(HRQoL) 예측모형

윤광식,노요섭 한국비교정부학회 2016 한국비교정부학보 Vol.20 No.4

The purpose of this study was to investigate Health-related quality of life(HRQoL) for airline flight of crew. The variables for the study included life style, self-efficacy, fatigue for HRQoL. The data were collected from 253 employees of the airline flight of crew who gave their informed consent and completed a self-reported questionnaire in April, 2016. A path analysis model was established and used to assess parameters such as life style, self-efficacy, fatigue for HRQoL. The fitness of the hypothetical model was adequate(CMIN/ DF=3.833, GFI=0.996, NFI=0.982, CFI=0.993, IFI=0.990, RMR=0.011). Analysis of the hypothetical model demonstrated that the direct effects of health habit and stress management were significantly correlated with self efficacy. The explanation power of the hypothetical model was 10.6%. The factors that influenced on the health-related quality of life were fatigue, self-efficacy and the explanation power was 15.8%. The results of this study indicate that it is necessary to develop health promotion program to enhance self-efficacy and to decrease fatigue for health-related quality of life.

인터넷과 웹기반 지리정보시스템을 이용한 수질예측 의사결정 지원시스템

윤광식,최진용,Yoon Kwang Sik,Choi Jin Yong 한국관개배수위원회 2001 한국관개배수논문집 Vol.8 No.1

영농기 필지논의 근역 영양물질 농도 변화 및 침투손실량

윤광식,조재영,최진규,손재권,한국현,김영주,최진용,Yoon Kwang-Sik,Cho Jae-Young,Choi Jin-Kyu,Son Jae-Gwon,Han Kuk-Heon,Kim Young-Joo,Choi Jin-Yong 한국관개배수위원회 2002 한국관개배수논문집 Vol.9 No.1

Changes of concentrations and losses of nutrient via infiltration from paddy plot during rice cultivation were monitored. The infiltrated water samples were collected in a ceramic porous cup which was buried at the depth of 30,50,70, and 90cm beneath the

마늘에 대한 관개 영향 및 소비수량 산정

윤광식,정재운,한국헌,김영주,김진택,Yoon Kwang Sik,Jung Jae Woon,Han Kuk Heon,Kim Young Joo,Kim Jin Taek 한국관개배수위원회 2005 한국관개배수논문집 Vol.12 No.1

In order to investigate effect of irrigation on soil moisture and garlic growth, a experimental plot, which was shielded from precipitation was established. The irrigation levels during the experimental period were 30, 20, 10 mm and non-irrigation with th

영산강 IV단계 사업지구 밭관개 실태조사

윤광식,김영주,윤석군,한국헌,김진택,Yoon Kwang Sik,Kim Young Joo,Yoon Suk Gun,Han Kuk Heon,Kim Jin Taek 한국관개배수위원회 2004 한국관개배수논문집 Vol.11 No.2

To devise better development plan, survey was conducted about current farmer's irrigation management on upland in the YoungSan River Irrigation Project District IV. Major upland crops are garlic and onion in this region. Currently, upland irrigation has b

하지직거상검사(下肢直擧上檢査)상 제한을 보이는 요추추간판태출증(腰椎椎間板脫出症) 환자 30례에 대한 방광정격(膀胱正格)과 체침(體鍼)의 비교연구

윤광식,이현,강재희,최주영,Yoon, Kwang-Shik,Lee, Hyun,Kang, Jae-Hui,Choi, Joo-Young 대한침구의학회 2010 대한침구의학회지 Vol.27 No.5

Objectives : This study was designed to evaluate the effects of treatment of HIVD patients with lower back pain, lower limb radiating pain and restricted on SLRT by the Sa-Am acupuncture. Methods : From March 2010 to July 2010, thirty HIVD patients who admitted to Cheonan oriental medical hospital in Daejeon university were divided into two groups. Group I was treated by Sa-Am acupuncture Banggwangjeonggyeok and general acupuncture, Group II by general acupuncture. We evaluated the treatment effect of each group with the Visual Analog Scale(VAS), Oswestry Disability Index(ODI), SLR test, dividing two period(from admission day to third day after admission and from third day to sixth day after admission). Results : 1. Group I is more effective than Group II in early pain and reducing rate of pain. 2. Group I is more effective than Group II in ODI score reducing rate from admission day to third day after admission, but there was no significant difference between the two groups from third day to sixth day after admission. 3. Group I is more effective than Group II in early SLR test improvement rate. Conclusions : Sa-Am acupuncture Banggwangjeonggyeok on HIVD patients with lower back pain, lower limb radiating pain and restricted on SLR test was effective in reducing pain and improving SLR test.

수질 자료 분석을 위한 통계학적 방법

윤광식,Yoon Kwang Sik 한국관개배수위원회 2001 한국관개배수논문집 Vol.8 No.1

경제성 지표를 활용한 농업용저수지의 생활용수 공급가능성 평가

윤광식,최수명,채종훈,유승환,최동호,윤석군,이창희,정경훈,신길채 한국농촌계획학회 2017 농촌계획 Vol.23 No.1

Existing agricultural reservoirs are considered as alternative source for the water welfare of rural area. In this study, domestic water supply potential of 476 reservoirs, which has storage capacity more than one million cubic meter, out of 3,377 agricultural reservoirs managed by Korean Rural Community Corporation (KRC) were investigated. Among them water quality of 136 reservoirs met the criteria of domestic water source which show less than COD 3 ppm. Available amount for domestic water of reservoirs, which meet the water quality, for ten year return period of drought was analyzed with reservoir water balance model. The results showed that 116 reservoirs has potential for supplementary domestic water supply while satisfying irrigation water supply. Finally, economic analysis using Net Present Value (NPV), Benefit–Cost (B/C) ratio, Internal Rate of Return (IRR), and Profitability Index (PI) methods was also conducted. The analysis showed that 19 reservoirs satisfied economic feasibility when water is provided from reservoir outlet but only 9 reservoirs meet the economic feasibility if water delivered from a reservoir to treatment plant by newly built conveyance canal. In order to supply the domestic water through the agricultural reservoirs managed by KRC, it is necessary to flexibly interpret and operate the ‘Rearrangement of Agricultural and Fishing village Act’. Also, it is reasonable to participate in the water service business when there is a supply request from other Ministries. In addition, the KRC requires further effort to change the crop system for saving water and improve efficiency of irrigation systems.

논에서의 일주기 수질 조사로부터 유도된 오염물질의 강우-유출 사상별 유량가중평균농도와 유출량-유하부하량 관계

윤광식,조재영,최진용,한국헌 한국농공학회 2002 한국농공학회논문집 Vol.44 No.5

Water quality samples were taken for every two hours whenever runoff occurred by rainfall to investigate concentration variations of T-N, T-P and SS during runoff process from a paddy field. The difference between the highest concentration in a runoff event and flow weighted mean concentration for T-N, T-P, SS placed between 3.07∼40.16%, 11.44∼60.80%, and 15.11∼64.5%, respectively. The difference between the lowest concentration in event and event mean concentration for T-N, T-P, SS ranged between -7.24∼-31.84%, -11.59∼-47.86%, and -8.21∼-36.20%, respectively. The relationship between runoff and mass load was derived for each storm event using observed data. The relationship between runoff and mass load showed linear relationship regardless of water quality constituents and rainfall amount. The results suggested that relationship between T-N and T-P loads and runoff should be prepared separately in considering of fertilization effect and seasonal conditions. The relationship between SS and runoff should be made to reflect seasonal conditions and tillage effect. 본 연구에서는 필지논에서 오염부하량 추정시 오차를 추정하기 위해 강우사상에 의한 유출수를 2시간 간격으로 채수하여 유출 과정 중 T-N, T-P, SS의 농도 변화를 살펴보았고, 이를 유출과정 중의 평균농도와 비교하였으며, L-Q식을 사용 오염부하량 추정시 문제점을 고찰하였다. 그 결과는 다음과 같이 요약될 수 있다.1. 각 강우사상의 유출시 T-N의 유량가중평균농도는 영농기에는 5.735∼11.580 mg/L이며, 비영농기에는 3.645∼5.426 mg/L로 나타났다. 논에서 T-N의 강우사상별 유출수 내의 농도는 강우량 크기보다는 시비량 및 시비시기와 강우 유출의 발생시기에 큰 영향을 받는 것으로 나타났다. T-N의 경우 연중 시비후 시간이 경과함에 따라 유량가중평균농도가 감소하는 경향이 뚜렷하였다.2. T-P의 경우 강우 유출수의 유량가중평균농도의 최고치는 시비영향을 받은 유출 사상에서 0.2 mg/L이었으며, 일반적으로 강우 유출수 내 유량가중평균농도는 일반적으로 0.11∼0.14 mg/L로 연중 변화가 크지 않은 것으로 관측되었다.3. SS의 경우 일반적으로 강우 유출수 내 유량가중평균농도는 영농기에는 122.45∼165.82 mg/L 이었으며, 비영농기인 겨울동안 82.27∼111.62 mg/L로 나타났다. 그러나 1998년 봄 논갈이의 영향을 받아 502.12 mg/L 값이 관측되었다. 4. 조사된 결과는 만일 모든 강우-유출 사상에 대해 단 1회라도 수질 자료가 측정된다면 오염부하량 산정 결과는 충분한 수질자료를 이용한 경우에 비해 T-N 은 -31.84∼40.16%, T-P는 -47.86∼60.8%, SS는 -36.2∼64.5% 내외의 오차를 가질 수 있음을 보였다. 5. 강우-유출 일주기 조사로부터 유출량-유하부하량 관계식을 얻어 오염부하량을 추정하기 위해서는 T-N은 여러 시기로, T-P는 시비에 영향을 받는 시기와 나머지 시기를 구분하여 관계식을 도출하여야 하며, SS의 경우는 영농기 및 비영농기 그리고 경운의 영향이 있는 시기로 나누어 관계식을 도출할 필요가 있는 것으로 판단된다.

脾正格 자침이 정상 성인 脈波 변화에 미치는 영향

윤광식,이현 대한침구의학회 2013 대한침구의학회지 Vol.30 No.4

Objectives : The purpose of this study is to investigate the effects of Sa-Am spleen-tonifying acupuncture on radial pulse in healthy human subjects. Methods : Forty healthy human subjects participated in this study, divided into acupuncture group and control group. Radial pulse was measured by 3 dimensional pulse imaging system(DMP-3000) before, right after, 30 minutes after and 60 minutes after acupuncture in the acupuncture group. The subjects in the control group didn’t received acupuncture but took a rest and then the radial pulse was measured at the same time points as the acupuncture group. The parameters were analyzed by gender, measuring location, and measuring time point. However the time related parameters exceptionally were analyzed without distinction of measuring location. Results : 1. T, variance of period, T2/T, T4/T, (T-T4)/T, T4/(T-T4), and W significantly changed after acupuncture. 2. Pressure, amplitude of H1, amplitude of H2, Amplitude of H4 and pulse energy significantly changed after acupuncture. 3. Pulse area, systolic pulse area and diastolic pulse area significantly changed after acupuncture. 4. Elasticity, AIx and AIx/HR significantly changed after acupuncture. Conclusions : The effect of Sa-Am spleen-tonifying acupuncture in healthy human may be observed on time, amplitude, pulse area and augmentation index. Further studies on the effects of Sa-Am acupuncture using radial pulse are needed.