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수돗물불소농도조정사업이 지역주민의 골밀도에 미치는 영향
한윤정,민진영,한동헌,김현덕,백도명,Han, Yoon-Jung,Min, Jin-Young,Han, Dong-Hun,Kim, Hyun-Duck,Paek, Do-Myung 한국환경보건학회 2008 한국환경보건학회지 Vol.34 No.4
Adjusted water fluoridation has been disputed because of its various effects on human health. Previous studies have been concerned with the difference in bone mineral density (BMD) between water fluoridated (WF) and none water fluoridated (NWF) districts. The aim of this study is to examine whether water fluoridation affects BMD. BMD was measured by dual energy X-ray absorptiometry (DXA). 386 adults(174 males and 212 females) in Ansan (WF) district and 399 adults (176 males and 223 females) in Sihwa (NWF) district, participated in this study. The Ansan and Sihwa districts are similar in residential environment and living class. The relationship between serum fluoride concentration and BMD was also examined by analysis of the serum fluoride concentrations from 402 inhabitants of the Ansan district. In females, the BMD of subjects living in Ansan ($0.457{\pm}0.008$) was a little higher than that of Sihwa subjects ($0.446{\pm}0.008$), although it is not significant, after adjusting for BMI, physical activity level, educational achievement, smoking volume, menopause status, and number of births. However, the BMD of Ansan subjects ($0.532{\pm}0.020$) in their forties was statistically higher than that of Sihwa (0.498{\pm}0.019). No relationship was found in males. In residential periods, there was significant difference (Ansan $0.467{\pm}0.013$, Sihwa $0.434{\pm}0.012$, p=0.0125) in the BMD between females of two districts, particularly in the group of over 6 year long-term inhabitants. On the contrary, there was no remarkable difference in males from the two districts. Serum fluoride concentrations in females were associated with BMD, especially in the age group of forties (p=0.0457). No relationship was observed in the male group. Analysis of adult BMD over the age of 20 in a water fluoridated and a none water fluoridated district, confirms more or less a higher BMD in the water fluoridated (WF) district, especially for females. It is assumed that the difference between two districts came somewhat from the effect of water fluoridation.
기포제 종류 및 혼입량 변화에 따른 LEFC 작업성 검토
한윤정 ( Han Yoon Jung ),반홍준 ( Ban Hong Jun ),김진녕 ( Kim Jin Nyoung ),김수연 ( Kim Soo Ryon ),김병일 ( Kim Byoung Il ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
This study was conducted to examine the workability of LEFC in relation to the types and the mix ratio of different foaming agents. The foam agents act as lightweight aggregates in the concrete matrix and provide an alternative to obtaining the adequate strength level for the foam concrete. The results of the test showed that the synthetic foam agents were able to act properly as replacements for the lightweight aggregates.
인터렉티브 사운드 설치와 사용자 의도 분석에 관한 연구 : 작품 Color note를 중심으로
한윤정(Yoon-jung Han),한병준(Byeong-jun Han) 한국HCI학회 2008 한국HCI학회 학술대회 Vol.2008 No.2
본 연구에서는 사용자 의도를 의도 범위(intention range)에 따라 정의하고, 이를 다양하게 변화시켜 반영한 인터렉티브 사운드 인스톨레이션을 제안한다. 사용자 의도는 요소(element), 부분(part), 전체(entire) 등의 다양한 계층 범위로 분류하여 정의되었다. 또한, 분류된 각 범위는 서로 소속/포함 관계로 정의되었다. 요소 의도를 반영하기 위해 우리는 사용자의 반응에 따라 색과 음이 인터렉티브하게 표시되는 Color note 라는 인터페이스를 제작하였다. 부분 의도를 반영하기 위해 요소 의도를 화성학 규칙으로 보정하기 위한 화성 정리 방법(HD)을 제안한다. 마지막으로 전체 의도는 요소 의도의 거시적 방향성으로써 추정된다. 추정 기법으로서 칼루엔-뢰브 변환(K-L Transform) 등과 같은 통계적 기법을 적용하였다. 제안한 인터페이스인 Color note 와 다양한 기법들의 유효성을 확인하기 위해, 전시설치가 되었고, 다양한 사용자에게 평가 설문을 시행하였다. 또한, 전체 의도를 표현하기 위해 사용된 다양한 통계적 기법의 만족도를 조사하였다. This work defines user intention according to intention range, and also proposes an interactive sound installation which reflects and varies above features. User intention consists of several decomposition concepts, which are elemental intentions, partial intentions, and a universal intention. And also, each concept is defined as inclusion/affiliation relationship with other concepts. For the representation of elemental intention, we implemented an musical interface, Color note, which represents the colors and notes according to response of participants. We also propose Harmonic Defragmentation (HD), which arranges the partial intentions with harmonic rule. Finally, the universal intention is inferred to the comprehensive direction of elemental intentions. We used Karhunen-Loeve(K-L) Transform for the inference. For verifying the validity of our proposed interface, the "Color Note," and the various techniques, we installed our work and surveyed various users for the evaluation of HD and statistical techniques. Also, we commissioned another survey to find out satisfaction measurement which was used for expressing universal intention.
내진성능 향상을 위한 시멘트 복합체의 탄소섬유 보강 효과
한윤정 ( Han Yoon-jung ),송기창 ( Song Ki-chang ),임채영 ( Lim Cae-young ),홍승현 ( Hong Seung-hyun ),박종건 ( Park Jong-gun ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1
This paper is focused on flexural bahavior of cement composites reinforced with carbon fibers as a part of research for improving a seismic performance of structures using carbon fiber reinforced concrete(CRFC). Flexural behavior test was conducted on respective specimens reinforced with different fiber length(6mm, 12mm) and contents(0%, 0.5%, 1.0%, 2.0%, 3.0%). The result of the test showed that the flexural performance of carbon fiber reinforced cement composites are directly proportional to the fiber contents except for the specimen reinforced with 3% carbon fiber.
한윤정 ( Han Yoon Jung ),김수연 ( Kim Soo Yeon ),김병일 ( Kim Byoungil ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.2
This study was conducted improve reduction of flexural performance cuased by using acrylic round bar. For the specimen, different fiber contents(0.2%, 0.4%)was used for recycled waste ALC and the bottom ash light weight aggregate respectively to confirm the flexural performance according to the fiber content. The result of the test showed that the specimen with 0.4% fiver content shown to have improvement of flexural performance.
한윤정 ( Han Yoon-jung ),김수연 ( Kim Su-yeon ),김병일 ( Kim Byoungil ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.1
The appearance & spread of new kind of virus might cause national economic shrinkage and reduction of foreign tourist. Finally, severe damage of national economy happens. This research wants that after property analysis for generally applied building interior materials, specifically eco-environmental materials including functional materials are reviewed, classified and their special properties in building were investigated.
한윤정 ( Han Yoon Jung ),김진녕 ( Kim Jin Nyoung ),서승훈 ( Seo Seung Hoon ),김수연 ( Kim Soo Ryon ),김병일 ( Kim Byoung Il ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
This study was conducted examine the mechanical properties of LEFC in relation to the type of light weight aggregate and replacement ratio. For the specimen, different replacement ratio was used for recycled waste ALC and the bottom ash light weight aggregate respectively. The tests revealed that 60% of the waste ALC light weight aggregate is suitable for securing the optimal strength and light weight of the LEFC.