Exploring preventive factors against insufficient antibody positivity rate for Foot-and-Mouth Disease in pig farms in South Korea: a preliminary ecological study

Dongwoon Han,Byeongwoo Ahn,Kyung-Duk Min 대한수의학회 2024 Journal of Veterinary Science Vol.25 No.1

Background: Foot-and-mouth disease (FMD) is a highly contagious viral disease in livestock that has tremendous economic impact nationally. After multiple FMD outbreaks, the South Korean government implemented a vaccination policy for efficient disease control. However, during active surveillance by quarantine authorities, pig farms have reported an insufficient antibody positivity rate to FMD. Objective: In this study, the spatial and temporal trends of insufficiency among pig farms were analyzed, and the effect of the number of government veterinary officers was explored as a potential preventive factor. Methods: Various data were acquired, including national-level surveillance data for antibody insufficiency from the Korea Animal Health Integrated System, the number of veterinary officers, and the number of local pig farms. Temporal and geographical descriptive analyses were conducted to overview spatial and temporal trends. Additionally, logistic regression models were employed to investigate the association between the number of officers per pig farm with antibody insufficiency. Spatial cluster analysis was conducted to detect spatial clusters. Results: The results showed that the incidence of insufficiency tended to decrease in recent years (odds ratio [OR], 0.803; 95% confidence interval [95% CIs], 0.721–0.893), and regions with a higher density of governmental veterinary officers (OR, 0.942; 95% CIs, 0.918–0.965) were associated with a lower incidence. Conclusions: This study implies that previously conducted national interventions would be effective, and the quality of government-provided veterinary care could play an important role in addressing the insufficient positivity rate of antibodies.

유한요소법 및 반응표면법 기반 대면적 양면형 태양광 모듈 프레임 최적설계

한동운(Han Dongwoon),김성탁(Kim Seongtak) 한국태양에너지학회 2023 한국태양에너지학회 논문집 Vol.43 No.6

Large-scale bifacial photovoltaic modules have the advantages of high unit yield and production. Because the module weight increases with the module size, the power conversion efficiency can decrease owing to defects such as encapsulant delamination and cell cracking caused by the increased deflection of the module. However, research on the design optimization of large-scale bifacial photovoltaic module frames is lacking. Therefore, in this study, we analyzed the deflection of large-scale bifacial photovoltaic modules using finite element analysis (FEA). Furthermore, we propose an optimal design for a solar module frame that minimizes both module deflection and frame weight using the response surface methodology (RSM). We established 32 experimental setups utilizing the design of experiments with five frame shape factors placed at two levels each. The results of structural analysis showed that the maximum deflection occurred at the center of the module. The results obtained using RSM for minimizing deflection and weight yielded optimal factors as follows: a, b, c, d, e were found to be 1.9 ㎜, 14.0 ㎜, 1.5 ㎜, 1.7 ㎜, and 2.5 ㎜, respectively. A comparison of the deflection and weight between the existing and optimal conditions obtained from structural analysis revealed an increase in weight of approximately 4.5% compared to the existing conditions. Simultaneously, a deflection reduction of approximately 15.8% was observed.

DEA를 통한 보건소 한의약보건사업 효율성 평가

한동운 ( Han Dongwoon ),정지영 ( Joung Ji Young ),송재찬 ( Song Jae Chan ) 한국보건사회연구원 2010 保健社會硏究 Vol.30 No.2

이 연구는 2005년부터 공공보건기관에서 시행중인 한의약건강증진Hub보건소사업의 효율성을 자료포락분석을 이용하여 평가하였으며, 각 한의약건강증진Hub보건소간 효율성 차이의 원인을 밝히고자 하였다. 또한 그 동안 자료포락분석을 이용한 연구에서 한계점으로 지적되어 온 질적 측면을 고려하지 못한 문제를 극복하기 위하여 고객만족비율을 분석모형에 포함시켜 그 적용가능성을 검토하였다. 이 연구에서는 자료포락분석을 위한 투입변수로 Hub보건소 한의약건강증진사업 총예산과 행정안전부 합동평가지표에서 사용된 인력의 적절성 합계점수를 사용하였고 산출변수로는 총 참여주민 수, 한방진료실 총 내원환자 수, 한의약공공보건사업 만족/매우 만족 비율을 사용하였다. 연구결과 분석모형에 포함된 51개 보건소 중 CCR모형에서는 9개의 보건소가 BCC모형에서는 15개의 보건소가 효율적인 보건소로 나타났으며, BCC모형에 의한 기술적 순효율성 결과가 더 높게 나타나 규모의 비효율성이 존재하는 것으로 나타났다. 그리고 시, 군 간의 효율성 차이는 통계적으로 유의하지 않았다. 보건소간 효율성 차이의 원인을 밝히고자 Tobit회귀분석을 실시하였고, 그 결과 통계적으로 유의하고 실제적으로 설명력 있는 효율성의 결정요인이 나타나지는 않았다. 그리고 백분율형태의 질적지표인 고객만족비율을 자료포락분석모형에 포함시켜서 분석한 결과 질적지표를 포함시키기 전보다 효율성지수가 상향평준화되었으며 BCC모형이 CCR모형보다는 백분율형태의 질적지표를 포함시키는 분석모형에서는 더 적합한 방법인 것으로 나타났다. The purposes of this study is to measure relative efficiency of public health centers implementing health promotion programmes using traditional Korean medicine(HPTKM) using the method of Data Envelopment Analysis (DEA), and to suggest the means to improve efficiency by investigating the reasons for the differences in efficiency. Previous studies has been pointed out, as the limitations of the studies using DEA, that the studies did not consider the qualitative aspects of customer satisfaction. In order to overcome this limitation, this study develop alternative model by including customer satisfaction rate in DEA model and its applicability was examined. In addition, this study explain the differences in relative efficiency by location and external factor using Tobit model. The major findings of this study are as follows. First, there are no significant differences in the relative efficiency among the public health centers by location. Second, according to the Tobit analysis results, there are statistically significant differences in the aspect of location. But the result does not show the external factors affect the performances of the public health centers.

PSTR 기반의 가상머신 환경에서 실시간 데이터 전송에 관한 연구

한규종(Kyujong Han),전동운(Dongwoon Jeon),유진호(Jinho Yoo) 한국정보과학회 2014 한국정보과학회 학술발표논문집 Vol.2014 No.6

Factors related to the parallel use of complementary and alternative medicine with conventional medicine among patients with chronic conditions in South Korea

Choi, Byunghee,Han, Dongwoon,Na, Seonsam,Lim, Byungmook Elsevier Science B.V., Amsterdam 2017 Integrative medicine research Vol. No.

<P><B>Background</B></P><P>This study aims to examine the characteristics and behavioral patterns of patients with chronic conditions behind their parallel use of the conventional medicine (CM) and the complementary and alternative medicine (CAM) that includes traditional Korean Medicine (KM).</P><P><B>Methods</B></P><P>This cross-sectional study used the self-administered anonymous survey method to obtain the results from inpatients who were staying in three hospitals in Gyeongnam province in Korea.</P><P><B>Results</B></P><P>Of the 423 participants surveyed, 334 participants (79.0%) used some form of CAM among which KM therapies were the most common modalities. The results of a logistic regression analysis showed that the parallel use pattern was most apparent in the groups aged over 40. Patients with hypertension or joint diseases were seen to have higher propensity to show the parallel use patterns, whereas patients with diabetes were not. In addition, many sociodemographic and health-related characteristics are related to the patterns of the parallel use of CAM and CM.</P><P><B>Conclusion</B></P><P>In the rural area of Korea, most inpatients who used CM for the management of chronic conditions used CAM in parallel. KM was the most common in CAM modalities, and the aspect of parallel use varied according to the disease conditions.</P>

무인비행체 컴퓨팅 장치의 경량화를 위한 가상머신 기반의 듀얼 RTOS 실험환경 구성

한규종(Kyujong Han),전동운(Dongwoon Jeon),김두현(Doohyun Kim) 한국정보과학회 2013 한국정보과학회 학술발표논문집 Vol.2013 No.6

마라카스 : 신체적 능력 증진을 위한 활동 기반 보드게임 개발

한은(En Han),장준영(Junyoung Jang),손주영(Jooyoung Son),이동운(Dongwoon Lee),조혜련(Hyeruyn Jo),조준동(Jundong Cho) 한국HCI학회 2018 한국HCI학회 학술대회 Vol.2018 No.1

기존의 보드게임은 아날로그(analog)로 이루어진 물리적인 도구를 이용해 진행되며 이는 정신적 능력만을 다져주는 한계가 있었다. 본 논문은 보드게임에 디지털(digital)과 엑서게임(Exergame)요소를 가미시켜 정신적 · 신체적 능력을 동시에 향상시킬 수 있는 보드게임을 제작하였다.

신뢰성 있는 멀티스택 기반의 가상화된 데이터 동시공유 시스템의 구현

한규종,전동운,김두현,Han, Kyujong,Jeon, Dongwoon,Kim, Doohyun 대한임베디드공학회 2016 대한임베디드공학회논문지 Vol.11 No.5

In this paper, we present an architecture for the fault isolation by applying virtualization-based multi-stack technologies. We propose the simultaneous sharing and switching mechanism using virtualied serial communications. Each guest OS has its own virtual serial device. The distribution module provides communications between the guest OS's through the virtual serial devices and simultaneously detect the liveness of the guest OS. The suggested mechanism has been implemented in VirtualBox and shows satisfactory performance in transmission speed and data sharing capability with virtual RS232.

감나무로부터 분리한 Colletotrichum gloeosporioides의 스테롤 생합성 저해제에 대한 감수성

임태헌(Tae Heon Lim),이동운(DongWoon Lee),최용화(Yong-Hwa Choi),이상명(Sang Myeong Lee),한상섭(Sangsub Han),차병진(Byeongjin Cha) 한국농약과학회 2009 농약과학회지 Vol.13 No.3

Use of Complementary and Alternative Medicine(CAM) during pregnancy in Kunming, China

( Lindsey Park ),( Luzhu He ),( Junghye Hwang ),( Dongwoon Han ) 한국모자보건학회 2020 한국모자보건학회 학술대회 연제집 Vol.2020 No.-

Purpose: The health status of Chinese people have considerably improved with an impressive achievement in maternal health(75% reduction rate of maternal mortality rate from 1990 to 2015) in the past 20 years with strong growth in healthcare. In China, Complementary and Alternative Medicine (CAM) such as “Traditional Chinese Medicine (TCM)” is integrated in many general hospitals and primary healthcare institutes and has been practiced since ancient time. CAM use in China is popular among pregnant women and it is reported that many women utilize CAM during pregnancy until this day. The perception of CAM and its safety has been a debate for many researchers in the healthcare sector as the prevalence of CAM use is continuously rising not only in China but all around the world. Thus, the search for factors that allow women to rely on CAM during pregnancy has been brought to light in Global Health. The purpose of this study was to assess the factors which determine the use of CAM among pregnant women in Kunming city, China. Methods: A cross-sectional study was conducted among 389 pregnant women between the ages of 19-49 years old, who had visited the antenatal care outpatient department in the Kunming City Maternal and Child Hospital and the Jinkai District People’s Hospital in Kunming city, China. The data was collected given the option of self-reported questionnaire or a verbal face-to-face interview. The collected data was then exported to Microsoft Excel and IBM SPSS version21 for analysis and Chi-square tests were used to predict the association of study variables. Results: It was observed that 68.1% of women (265) used CAM during pregnancy and among those, 64.5% of women (171) had used CAM due to their health professional’s recommendations. Prior use of CAM, self-reported health status, communication between health professionals and information regarding CAM use are key components of CAM use during pregnancy. Statistically significant factors of CAM use include: self-reported health status, prior use of CAM, experience of back pain/skin problems/the common cold, preparation for natural birth and nutritional support (p value less than 0.05). Conclusion: In this study, 7 out of 10 women in Kunming city, China had used CAM during their pregnancy. The women who did not utilize CAM during pregnancy was largely due to their perception of it not being safe. The reasons for women to utilize CAM was the highest in those that followed their doctors’ or nurses’ recommendations (64.5%) and lowest in those who had said it was cheap and easy to access (1.9%). The information received by health professionals on the use of CAM is key to a successful and safe use in CAM during pregnancy. This study places emphasis on the importance of health professional’s attitude and the delivery of information about CAM. This study can be used as a guideline to educational programs for professionals in the obstetric and TCM department to ensure the safe use of CAM. With an appropriate integrative medicine healthcare delivery system in hospitals throughout China, the strengthening cooperation between the two departments could benefit many users.