발열반응 촉매제와 열처리를 이용한 석면함유 슬레이트의 무해화 연구

윤성준,정현이,박병노,김용운,김혜수,박재봉,노열 대한자원환경지질학회 2019 자원환경지질 Vol.52 No.6

Cement–asbestos slate is the main asbestos containing material. It is a product made by combining 10~20% of asbestos and cement components. Man- and weathering-induced degradation of the cement–asbestos slates makes them a source of dispersion of asbestos fibres and represents a priority cause of concern. When the asbestos enters the human body, it causes cellular damage or deformation, and is not discharged well in vitro, and has been proven to cause diseases such as lung cancer, asbestos, malignant mesothelioma and pleural thickening. The International Agency for Research on Cancer (IARC) has designated asbestos as a group 1 carcinogen. Currently, most of these slats are disposed in a designated landfill, but the landfill capacity is approaching its limit, and there is a potential risk of exposure to the external environment even if it is land-filled. Therefore, this study aimed to exam the possibility of detoxification of asbestos-containing slate by using exothermic reaction and heat treatment. Cement–asbestos slate from the asbestos removal site was used for this experiment. Exothermic catalysts such as calcium chloride(CaCl2), magnesium chloride(MgCl2), sodium hydroxide(NaOH), sodium silicate(Na2SiO3), kaolin[Al2Si2O5(OH)4)], and talc[Mg3Si4O10(OH)2] were used. Six catalysts were applied to the cement–asbestos slate, respectively and then analyzed using TG-DTA. Based on the TG-DTA results, the heat treatment temperature for cement–asbestos slate transformation was determined at 750oC. XRD, SEM-EDS and TEM-EDS analyses were performed on the samples after the six catalysts applied to the slate and heat-treated at 750oC for 2 hours. It was confirmed that chrysotile[Mg3Si2O5(OH5)] in the cement– asbestos slate was transformed into forsterite (Mg2SiO4) by catalysts and heat treatment. In addition, the change in the shape of minerals was observed by applying a physical force to the slate and the heat treated slate after coating catalysts. As a result, the chrysotile in the cement–asbestos slate maintained fibrous form, but the cement–asbestos slate after heat treatment of applying catalyst was broken into non-fibrous form. Therefore, this study shows the possibility to safely verify the complete transformation of asbestos minerals in this catalyst- and temperature-induced process.

중강도 유산소 운동이 음주습관을 가진 중년남성의 간 기능지표 및 항산화력에 미치는 영향

윤성준,백준형 한국웰니스학회 2020 한국웰니스학회지 Vol.15 No.3

This study was conducted to investigate changes in liver function index and antioxidant capacity in middle-aged men(n=36) who had a drinking habit through moderate intensity aerobic exercise for 12 weeks. The group was classified into a habitual drinking group(n=19) and an intermittent drinking group(n=17). As a statistical method, spss 20.0ver. was used to perform independent t-test and paired t-test. There was no statistically significant difference in liver function index(AST, ALT) following 12-week mid-intensity aerobic exercise. The changes in antioxidant capacity according to the 12-week moderate-intensity aerobic exercise showed statistically significant differences in HDG and IDG after 12-week moderate-intensity aerobic exercise in ROS (p<.05),(p<.05). SOD also showed statistically significant differences in HDG and IDG after 12 weeks of moderate intensity aerobic exercise(p<.05),(p<.01). No statistically significant difference was found in the difference test between groups. Therefore, studies that require long-term exercise treatment are required for AST and ALT. ROS and SOD are judgments that have a positive impact. 본 연구는 12주간 중강도 유산소 운동을 통하여 음주 습관을 가진 중년남성(36명)의 간 기능지표와 항산화력의 변화를 관찰하기 위하여 수행되었다. 집단은 습관적 음주집단(n=19)과 간헐적 음주집단(n=17)으로 분류하였다. 자료처리는 spss 20.0ver.을 이용하였고 집단 간 차이 검증은 독립 t검정, 집단 내 전·후 차이검증은 대응t검정을 실시하였다. 12주 중강도 유산소운동에 따른 간 기능지표(AST, ALT)에서는 통계적으로 유의한 차이가 나타나지 않았다. 12주 중강도 유산소운동에 따른 항산화력의 변화는 ROS에서 12주 중강도 유산소운동 후 HDG와 IDG에서 통계적으로 유의한 차이가 나타났다(p<.05), (p<.05). 또한 SOD에서도 12주 중강도 유산소운동 후 HDG와 IDG에서 통계적으로 유의한 차이가 나타났다(p<.05), (p<.01). 집단 간 차이 검증에서는 통계적으로 유의한 차이가 나타나지 않았다. 따라서 AST, ALT는 장기간의 운동처치가 요구되는 연구가 필요하고, ROS, SOD에는 긍정적인 영향을 미친 것으로 판단된다.

드론봇 전투체계에 대한 네트워크 구축 방향

윤성준,최용훈 육군사관학교 화랑대연구소 2020 한국군사학논집 Vol.76 No.3

Drones are researched with a lot of interest because they can be used unmanned by maneuvering and fighting in battle. In accordance with the 4th Industrial Revolution, the development of drones is expected to develop dramatically by integrating with technologies such as artificial intelligence, IoT, and 5G. However, simply using a drone to fly is very limited in combat. In order to use the drone as a combat system, it must be super-intelligent and super-connected. In order to perform surveillance-stroke at the same time, it must be configured to be one system. In order to control the drone and transmit the data acquired by the drone to the C4I system, it is necessary to build a network of drone systems to help the commander's decision and visualize the battlefield. In this study, the drones used by the military are classified by functional and size, and there are various drones such as weapon systems and power support systems. A standard for wireless communication with these drones is required by each communication method, and drones have been applied according to missions according to each wireless communication method. 드론은 사람이 타지 않고 무인으로 조종하여 전투에 활용할 수 있기 때문에 많은 관심을 가지고 연구하고 있다. 4차 산업혁명에 따라 인공지능, IoT, 5G 등 기술과 융합하여 드론의 발전은 비약적으로 발전할 것으로 예상된다. 그러나 단순히 드론이 하늘을 나는 것만으로는 전투에 활용하기가 매우 제한된다. 전투체계로 드론을 활용하기 위해서는 초지능, 초연결화 되어야 한다. 감시-타격을 동시에 수행하기 위해서는 하나의 시스템이 되도록 구성하여야 한다. 드론을 조종 통제하고 드론이 획득한 데이터를 C4I체계로 전송하여 지휘관의 결심을 돕고 전장을 가시화하기 위해서는 드론체계의 네트워크 구축이 필요한 현실이다. 본 연구에서는 군에서 활용하는 드론을 기능적, 크기별로 구분하고 무기체계와 전력지원체계 등 다양한 드론이 있다. 이러한 드론들을 각각의 통신방법으로 무선통신하기 위한 표준이 필요하며 이러한 무선통신 방법에 따라 드론을 제대별 임무에 따라 적용해 보았다.

Stereoselectivity of the Ortho Ester Claisen Rearrangement of Substituted Silylpropargylic Alcohols

윤성준,정근회,유병찬,Yun, Sung-Jun,Chung, Kun-Hoe,Yu, Byung-Chan Korean Chemical Society 2004 대한화학회지 Vol.48 No.4

중년 남성의 배드민턴 운동이 신체조성, 유·무산소 능력 및 생활습관병위험인자에 미치는 영향

윤성준 한국웰니스학회 2017 한국웰니스학회지 Vol.12 No.4

This study was conducted to determine the relationship between body composition, aerobic·anaerobic ability and Risk Factors of Lifestyle-related Disease after applying badminton exercise for 8 weeks to males(n=27) of 40-50 age. This study was divided into exercise group(badminton exercise for 8 weeks) and control group. This study used the paired t-test and the independent t-test(SPSS ver. 22.0) to verify the difference of each variables. Frist, as a result of 8week badminton exercise for males of 40-50 age, weight and body fat were significantly different in exercise group. Second, there were significant differences from O2max in aerobic ability and blood lactate in anaerobic ability. Third, there were significant differences in HDL-c and TG in adult disease-related risk factors. 이 연구는 40-50대 남성 27명을 대상으로 배드민턴 운동을 8주간 적용시킨 후 신체조성, 유·무산소능력 및 생활습관병위험인자의 관계를 규명한 연구이다. 이 연구의 대상은 배드민턴 운동을 8주간 실시한 운동집단(n=13)과 통제집단(n=14)으로 분류하였고, 각 변인의 차이 검증을 위해 대응 t검증과 독립 t검증(SPSS ver. 22.0)을 실시하여 다음과 같은 결론을 도출하였다. 첫째, 40-50대 남성을 대상으로 8주간의 배드민턴 운동을 실시한 결과 운동집단에서 체중, 체지방량이 유의한 차이를 나타냈다. 둘째, 유산소 능력에서 최대산소섭취량, 무산소 능력에서 혈중 젖산에서 통계적으로 유의한 차이가 나타났다. 셋째, 생활습관병위험인자는 HDL-C과 TG에서 통계적으로 유의한 차이가 나타났다.

Asymmetries in the Effects of Bonding and Bridging Capital on e-WOM in Social Media: Moderating Roles of Cultural Values and Innovativeness

윤성준 (주)에스비에스 2014 미디어경제와 문화 Vol.12 No.1

As human network plays a pivotal role in defining the nature of socialrelations including networked communication, we need to deepen ourgrasp of how social capital, which is built upon the network concept, playsa role in generating word-of-mouth in social media. This research aims to examine the relationship between social capitaland e-WOM. The core research questions of this study are three; 1) Dobridging capital and bonding capital, two network-based social capitalclassifications influence e-WOM behavior in terms of quantity andquality? 2) Does consumer innovativeness moderate the relationshipbetween the social capital and e-WOM behavior? 3) Does a person’sCultural values (individualism and uncertainty avoidance) cause thedifferences in e-WOM behavior and the kind of social capital at work? Theresult indicates that bridging capital and bonding capital are distinct intheir effects on e-WOM behavior as well as in their relationships withconsumer innovativeness and cultural value.

호텔서비스 이용의향의 결정요인에 대한 이론적 고찰

윤성준 한국마케팅연구원 2007 마케팅 Vol.41 No.8

Experiential approach to the determinants of online word-of-mouth behavior

윤성준,한희은 한국마케팅과학회 2012 마케팅과학연구 Vol.22 No.3

This study identifies the factors which influence the adoption of online word-of-mouth communication that arises from customers’ in-store shopping experiences. For this purpose, the study examines the role of social networks in facilitating adoption and dissemination of word-of-mouth arguments. The study has three objectives, which are fulfilled by two different studies: in Study 1, we examine the effects of customers’ in-store shopping experiences based on the quantity and quality of online word-of-mouth communication derived from Schmitt’s (1999) five strategic experiential modules (sense, feel, think, act, and relate). Study 1 also verifies whether the three attributes of social networks (strength, centrality, and range of ties) influence word-of-mouth communication. In Study 2, we investigate whether the presentation of word-of-mouth arguments and product categories influences the evaluation and adoption of word-ofmouth. The result indicates that some types of shopping experiences have specific influences on online word-of-mouth communication. This result illustrates the usefulness of developing word-of-mouth proliferation strategies for retail stores that cater to Schmitt’s (1999) SEMs. The result also verifies that word-of-mouth arguments are more effective when they are presented with images and text simultaneously. Finally, the result suggests that online store managers should be able to differentiate product diffusion strategies based on the product characteristics and product’s involvement level.

2단계 PCR 기법을 이용한 글로벌 공급사슬 관리 모형

윤성준,박양병 한국경영과학회 2015 한국경영과학회 학술대회논문집 Vol.2015 No.4

본 연구는 분석방법으로는 principle component analysis (PCA) 와 다중 회귀분석을 사용하여 글로벌 공급사슬의 리스크를 예측하고 판정하는 2단계 principle component regression (PCR) 기반의 리스크 관리 모형을 제안한다. 개발된 예측모형의 성능은 인공 신경망 예측모형과 비교를 통해 확인된다. adaptive expon entially weighted moving average (AEWMA) 관리도를 이용하여 리스크 판정 조건식을 도출한다. 분석에 필요한 공급사슬의 성능지수 및 리스크 지표등의 자료는 글로벌 공급사슬의 ARENA 시뮬레이션 모형을 실행하여 수집한다.

Difference of Position Change of Sesamoid Bones During Active Abduction Exercise of Great Toe in Subjects with Hallux Valgus

윤성준,강민혁,김문환 대한물리치료학회 2015 대한물리치료학회지 Vol.27 No.2

Purpose: The purpose of this study was to investigate the effects of active abduction exercise of the great toe on the medial and lateral sesamoid bones in hallux valgus (HV) patients by measuring radiography. Methods: In this study 27 young subjects were separated into two groups (normal group and HV group). Two pictures were taken by radiography while maintaining resting and while holding maximal active abduction of the great toe in sitting position on an x-ray table. All radiographs were used to measure the distance of the medial and lateral sesamoid bone from the longitudinal axis of the first metatarsal bone, respectively. Paired t-test was used for analysis of the resting and active abduction exercise in groups. Independent t-test was used to evaluate statistical significance between normal group and HV group. The statistical significance level was p<0.05. Results: In active abduction exercise of the normal group, distance of the medial and lateral sesamoid bones was not significantly different compared to resting condition. In active abduction exercise of the HV group, change of distance of the medial and lateral sesamoid bones showed statistically significant difference compared to resting condition. The distance between the medial sesamoid bone showed a more significant decrease in the HV vs. normal group, while the distance between the lateral sesamoid bone was significantly greater in the HV vs. normal group. Conclusion: These findings suggest that active abduction exercises, to reduce or prevent deterioration of the HV angle, should be considered for sesamoid bone displacement to improve muscle balance in the great toe.