• International Journal of Advanced Culture Technology
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• 제6권3호
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• pp.193-200
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• 2018

This paper describes the design and trial development of a system that supports continuous hazard mapping by local residents in their daily life. We performed an interview survey to design our system in a model traditional town in Saga Prefecture, Japan. The results show that despite continued efforts, many practical problems remain and residents feel unsafe. Considering these results, we designed and developed a unique information and communication technology-based support system that contributes to community-based disaster prevention and reduction. The continuous resident participation and posting design are the core concept for our community-based approach. Our system continues to support making a hazard map by integrating the community-based hazard information. Local residents register information (disaster types, risk level, photographs, comments, positional information) about locations that could be dangerous in a disaster. In addition, our system enables information sharing through a Web server. We expect that this information sharing will allow local hazard information for each district to be used.

• 대한임베디드공학회논문지
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• 제17권2호
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• pp.109-114
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• 2022

This paper proposes a 2D joystick and LoRa-based teleoperation system for the Ackermman steering mobile robot. The proposed joystick mapping algorithm reduces the linear speed of the robot when the joystick is steered in the direction of the maximum steering angle in the high-speed driving state of a mobile robot to reduce the risk of rollover. The LoRa-based remote operation system is designed for remote operation of mobile robots that require long range communication with relatively little data transmission and low power. The proposed system is implemented and the experimental results demonstrate the effectiveness of the teleoperation system with respect to the stability of communication strength and the robot motion.

• Archives of Plastic Surgery
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• 제49권2호
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• pp.253-257
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• 2022

The free fibula flap (FFF) is based on the peroneal artery (PA) system, and it is well known that several anatomical variations of the lower limb vascular system exist, including peronea arteria magna (PAM). PAM is a rare congenital variation in which both anterior tibial artery and posterior tibial artery are either aplastic or hypoplastic, and as a result, PA will be the dominant blood supply to the foot. This variation was described as type III-C in Kim-Lippert's Classification of the Infra-Popliteal Arterial Branching Variations. The awareness of its existence is crucial as it often precludes FFF from being harvested due to the risk of significant limb ischemia and limb loss. Despite some literature reporting donor site complications and impending limb loss following FFF harvest in PAM, preoperative vascular mapping before FFF transfer remains controversial among the microsurgeons. We present a case with an incidental intraoperative finding of PAM that had a successful FFF harvest by luck, without preoperative vascular mapping.

• Asian Pacific Journal of Cancer Prevention
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• 제16권14호
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• pp.5917-5921
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• 2015

Background: Prostate cancer is the most commonly diagnosed form of cancer and the sixth leading cause of cancer-related deaths among men in the entire world. Reported standardized incidence rates are 12.6, 61.7, 11.9 and 27.9 in Iran, developed countries, developing countries and the entire world, respectively. The present study investigated the relative risk of PC in Iran at the province level and also explored the impact of some factors by the use of Bayesian models. Materials and Methods: Our study population was all men with PC in Iran from 2005 to 2008. Considered risk factors were smoking, fruit and vegetable intake, physical activity, obesity and human development index. We used empirical and full Bayesian models to study the relative risk in Iran at province level to estimate the risk of PC more accurately. Results: In Iran from 2005 to 2008 the total number of known PC cases was 10,361 with most cases found in Fars and Tehran and the least in Ilam. In all models just human development index was found to be significantly related to PC risk Conclusions: In the unadjusted model, Fars, Semnam, Isfahan and Tehran provinces have the highest and Sistan-and-Baluchestan has the least risk of PC. In general, central provinces have high risk. After adjusting for covariates, Fars and Zanjan provinces have the highest relative risk and Kerman, Northern Khorasan, Kohgiluyeh Boyer Ahmad, Ghazvin and Kermanshah have the lowest relative risk. According to the results, the incidence of PC in provinces with higher human development index is higher.

• Environmental Engineering Research
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• 제23권1호
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• pp.84-91
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• 2018

The present study deals with the management of groundwater resources of an important agriculture track of north-western part of Saudi Arabia. Due to strategic importance of the area efforts have been made to estimate aquifer proneness to attenuate contamination. This includes determining hydrodynamic behavior of the groundwater system. The important parameters of any vulnerability model are geological formations in the region, depth to water levels, soil, rainfall, topography, vadose zone, the drainage network and hydraulic conductivity, land use, hydrochemical data, water discharge, etc. All these parameters have greater control and helps determining response of groundwater system to a possible contaminant threat. A widely used DRASTIC model helps integrate these data layers to estimate vulnerability indices using GIS environment. DRASTIC parameters were assigned appropriate ratings depending upon existing data range and a constant weight factor. Further, land-use pattern map of study area was integrated with vulnerability map to produce pollution risk map. A comparison of DRASTIC model was done with GOD and AVI vulnerability models. Model validation was done with $NO_3$, $SO_4$ and Cl concentrations. These maps help to assess the zones of potential risk of contamination to the groundwater resources.

• 한국지역지리학회지
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• 제20권1호
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• pp.128-140
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• 2014

이 논문은 화산재해지도가 갖는 특성을 규명하고, 국내외 화산재해지도의 사례조사를 통해 유형화하였다. 저자들은 해외의 화산재해지도의 구성요소를 도출하여 백두산을 대상으로 활용방안을 모색하는 것을 목적으로 하였다. 국외 화산재해지도에 대해 세 가지 유형(Hazard Map, Risk Map, Damage Map)의 재해지도 분석틀을 통해 검토하고, 화산재해지도의 구성요소를 도출하였다. 도출된 화산재해지도 구성요소는 1) 과거이력 누적 지도, 2) 확률론적 위험지도, 3) 시나리오 기반 지도이며, 이를 바탕으로 활용사례별(피난활용형, 방재정보형, 방재교육형) 화산재해지도의 구성요소를 제시하였다.

• 대한토목학회논문집
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• 제33권2호
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• pp.549-557
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• 2013

정밀한 홍수 범람도는 홍수의 공간적 특성에 대한 정보를 의사 결정자나 설계자들에게 전달할 수 있다. 수리모형을 이용하여 홍수 범람도를 구축하는 과정에서 확실하게 정의되거나 측정되지 않은 조도계수와 수위유량관계식으로부터 얻은 유량은 불확실성을 일으키는 핵심 요인들이다. 또한, 홍수 범람도에 대한 불확실성 해석을 위해서는 관측 자료가 필요한데, 홍수 범람의 관측 자료는 인공위성영상을 이용하여 확보할 수가 있다. 따라서 본 연구의 목적은 수리모형과 인공위성자료를 이용하여 조도계수와 유량이 홍수범람도 제작에서 일으키는 불확실성을 정량적으로 산정하는 것이다. 미국 Illinois주 Metropolis시 주위의 Ohio 강에 대하여 HEC-RAS과 지형분석을 이용하여 홍수 범람를 모의하고 ISODATA(Iterative Self-Organizing Data Analysis)분류 방법으로 Landsat 5TM 위성 영상으로부터 수체를 추출하였다. 추출된 수체는 GLUE(Generalized Likelihood Uncertainty Estimation)에서 우도측정(F-통계량)을 계산하는데 관측 자료로 이용되었다. GLUE는 누적확률 5 %와 95 %에 각각 해당하는 74.59 $km^2$와 151.95 $km^2$의 홍수범람면적을 산정했다. 홍수 범람도 구축과정에서 발생하는 불확실성을 정량적으로 산정하는 것은 효율적인 홍수방어 계획을 실현화하는데 중요한 역할을 할 거라 사료된다.

• Asian Pacific Journal of Cancer Prevention
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• 제16권13호
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• pp.5225-5231
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• 2015

Background: One of the most prevalent cancers in whole world is skin cancer and its prevalence is growing. The present research sought to estimate relative risk of morbidity and mortality due to skin cancer. Materials and Methods: In this cross-sectional study. The required data were gathered from the registered cancer reports of Cancer Control Office in the Center for Non Communicable Disease of the Iranian Ministry of Health (MOH). The data were extracted at province level in the time span of 2008-10. WINBUGS software was used to analyze the data and to identify high risk regions. ArcGIS10 was utilized to map the distribution of skin cancer and to demonstrate high risk provinces by using classic and fully Bayesian models taking into account spatial correlations of adjacent regions separately for men and women. Results: Relative risk of morbidity for women in Yazd and for men in Kurdistan and relative risk of mortality for women in Bushehr and for men in Kohgiluyeh were found to be the highest. Bayesian model due to regarding adjacent regions correlation, have precise estimation in comparing to classical model. More frequent epidemiological studies to enact skin cancer prevention programs. Conclusions: High risk regions in Iran include central and highland regions. Therefore it is suggested that health decision makers enact public education, using anti UV creams and sunglasses for those parts as a short preventing program.

• 대한공간정보학회지
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• 제20권4호
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• pp.97-104
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• 2012

최근 들어 전 세계적인 기상이변으로 인해 홍수재해의 발생빈도가 증가하고 있다. 이러한 홍수재해에 대비하기 위해서는 구조적 비구조적 방법이 있으며, 홍수위험지도의 제작과 활용은 비구조적 방법 중 하나이다. 홍수 위험지도는 홍수에 의한 인명 및 재산피해를 최소화하기 위해 홍수발생 시 여러 가지 정보들을 지도상에 나타낸 것으로서, 본 연구에서는 기존의 홍수위험지도의 활용성을 증가시키고 정보의 직관성을 개선하고자 공간정보기반 3차원 가상현실을 이용하여 홍수위험지도를 제작하고, 그 활용성을 평가하였다. 특히, 디지털기기를 이용하여 언제 어디서나 온라인 정보에 접근이 가능한 시대에 본 연구에서 제시한 홍수위험지도는 그 활용성이 매우 높다고 판단된다.

• 한국농림기상학회:학술대회논문집
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• 한국농림기상학회 2014년도 추계 학술발표논문집
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• pp.195-198
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• 2014