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김만일 ( Man Il Kim ),채병곤 ( Byung Gon Chae ),한병원 ( Byung Won Han ) 대한지질공학회 2008 지질공학 Vol.18 No.4
강우에 의한 풍화토층의 침투 특성은 함수비 변화에 따른 침윤선 거동으로부터 파악이 가능하다. 토층내 침투수에 의한 침윤선 형성은 흙매질의 밀도와 입도분포 특성 및 투수계수와도 밀접한 관계를 갖고 있으며, 침윤선의 침투속도는 토층의 투수계수와 거의 동일한 개념으로 볼 수 있다. 이 연구에서는 편마암 분포지역의 산사태 현장모니터링 시스템을 이용하여 표토층을 기준으로 50 cm 및 80 cm 깊이에 대한 토층내 체적함수비 변화로부터 각각의 침투속도를 현장 스케일에서 산정하였으며, 이 지역 토층의 불교란 시료를 채취한 후 실내시험을 통해 구한 투수계수와 비교하였다. 불교란 시료의 투수계수는 3.15 × 10-3 cm/sec이며, 체적함수비 변화로 계산된 침투속도는 평균 1.87 × 10-3 cm/sec로써 두 배 가량 낮게 나타났다. 그 이유는 현장에서의 침투속도는 매질의 공극과 입도분포에 민감하게 영향을 받기 때문에 실내실험을 통해 산정된 값보다는 다소 낮은 값을 갖기 때문으로 판단된다. 표토층의 체적함수비 및 침투속도에 영향을 미치는 강우강도는 산악 지형을 고려해 볼 때, 일평균 20 mm 이상의 강우가 발생하였을 경우에 토층의 침윤선 범위를 확대시키는 것으로 나타났다. It is possible to understand rainfall infiltration characteristics by identification of wetting front in the soil. The wetting front by rainfall infiltration has close relationships among soil density, grain size distribution, and permeability coefficient in the soil. The infiltration velocity is a similar concept of permeability coefficient in the soil. In this study, infiltration velocity of rainfall was calculated by a field monitoring of volumetric water contents at the depths of 50 cm and 80 cm below the surface in the gneiss weathered soil. The calculated field infiltration velocity was compared with a permeability coefficient by a laboratory soil test using undisturbed soil samples in the study area. The permeability coefficient of the soil sample is 3.15 × 10-3 cm/sec, while the field infiltration velocity is 1.87 × 10-3 cm/sec. It is interpreted that the lower infiltration velocity is induced by complicate condition of porosity and grain size distribution of soil in the field. The rainfall intensity which influences on the volumetric water content and infiltration velocity is more than 20 mm/day resulting in expansion of wetting front in the soil.
지역주민 관광영향 인식이 관광개발에 대한 태도 및 농촌관광 체험마을 개발의사에 미치는 영향
김병원(Byung Won Kim) 한국관광연구학회 2008 관광연구저널 Vol.22 No.3
This paper studies the positive and negative factors created from different understandings of tourism by local community, and their effects on community`s attitude toward local tourism site and agriculture district village development. For representative analysis, a survey was conducted with residents of Gang-Jin agricultural district village. A total of 250 surveys were distributed and 243 valid samples obtained. The sample generally divided the influence of local tourism development as positive and negative assessments. These two factors were determined to be the sole factor for the community`s attitude toward their acceptance of tourism development and its necessity. In order to break down their influence more effectively, multi-regression was performed and its results are as follow: 1. Both evaluations of tourism as positive and negative assessment were determined to be significant variables for community`s acceptance toward new local tour development. 2. Both evaluations of tourism as positive and negative assessment were determined to be significant variables for community opinion on the necessity of new tour development. 3. Both evaluations of tourism as positive and negative assessment were determined to be significant variables for community`s decision on allowing new tour development. 4. The supporting tour development criterion of the survey was determined to be the only positive variable toward the new development of the agricultural district village.
김병원(Byung Won Kim) 한국관광연구학회 2008 관광연구저널 Vol.22 No.2
This paper studies the primary factor of festival participation motives for the tourists and by verifying it, the paper presents improved motives to participate in such festivals and also its application in the future festival events. Up to date, the study on festival participation motive lacked in theoretical background and yet, accepted without filtration for all festival purposes. This cause numerous unsuccessful festival events depending on time and location and this paper Intend to present issues following the current system. Also, focus was given on how appropriately the suggested motive items attribute by the tourists and their adequacy of application regardless what event it may be applied to.
LoRa Mesh Network 기반 임시구조물 안전 모니터링 기술 개발
한병원 ( Han¸ Byung-won ),문동영 ( Moon¸ Dong-young ),김태봉 ( Kim¸ Tae-bong ),남제현 ( Nam¸ Jae-hyun ) 한국구조물진단유지관리공학회 2023 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.27 No.2
본 논문은 LoRa Mesh Network 기술을 이용한 임시구조물 계측관리 시스템을 개발하였다. 기존의 LoRaWAN(LoRa Wide Area Network)은 게이트웨이를 중심으로 각 센서 노드들이 스타 토폴러지(Star Topology) 방식으로 통신하여 계측 및 안전 데이터를 송ㆍ수신한다. 그러나 건설현장은 시간이 지남에 따라 시시각각 구조물형상 변화와 중장비 위치변경으로 인해 무선통신에 예기치 못한 통신 음영 지역이 발생할 수 있다. 이런 문제점을 해결하기 위해 본 연구에서는 로라 메쉬 토폴러지(LoRa Mesh Topology) 네트워크를 사용함으로써 통신 음영 지역을 회피하고 다중 경로로 데이터를 송ㆍ수신할 수 있어 네트워크의 신뢰성,확장성, 안정성을 높일 수 있었다.
김병원(Byung Won Kim) 한국관광연구학회 2009 관광연구저널 Vol.23 No.1
This research report shows the primary reason(s) why the attendees chose to come to the 2008 Hampyeong World Butterfly/Insect Expo and verifies the level of satisfaction among the attendees. Our goal was to provide a general and objective basis for why attendees attend, for use in similar expos in the future. The report uses prior research to draw out reasons for attendees` attendance, and investigates the level of satisfaction derived from the collective opinion among attendees. Because we are confident that the ecological tour industry will move to become the forefront of the future tour industry, we have done our best to make future follow-up research possible.
젊은 여성에서 물 섭취량에 따른 혈청 High-Sensitivity C-Reactive Protein 농도 변화
김현경(Kim, Hyun-Kyung),김병원(Kim, Byung-Won),이형선(Lee, Hyeong-Seon),조장은(Cho, Jang-Eun),권창오(Kweon, Chang-Oh),류재기(Ryu, Jae-Ki) 한국보건기초의학회 2021 한국보건기초의학회지 Vol.14 No.2
Water is essential for life; however, little is known about the precise amount of water intake that is beneficial for cardiovascular health. This study aimed to determine the impact of water intake amounts on cardiovascular disease (CVD) predictors. We reviewed 40 healthy women and divided them into four groups as follows: control, 1-L, 1.5-L, and 2-L water intake. The participants consumed the indicated amount of water daily. After 2 weeks, we evaluated the participants for changes in physiological conditions and CVD predictors. There was a significant decrease in waist circumference (WC) in all water intake groups except control group. The experiment showed no significant difference in the participants’ blood cell count; however, reduced mean platelet volume was observed in the 2-L intake group. Regarding lipid profiles, high-density lipoprotein cholesterol levels increased significantly in the 2-L intake group. High-sensitivity C-reactive protein levels decreased significantly in the 2-L intake group. Consuming >2 L of water daily may be more effective than consuming <2 L of water daily to reduce the risk of CVD. Therefore, this study suggests that drinking 2 L of water or more daily can help maintain a healthy life and prevent the onset of diseases in adults.