Effects of KOH Concentrations on the Synthesis of Gold Nanoparticles using a Solution Plasma Processing (초)

허용강,김성민,이상율 대한금속ㆍ재료학회 2009 대한금속재료학회 학술대회 개요집 Vol.2009 No.-

유체 플라즈마 적용을 통한 고분산 금 나노분말 제조에 관한 연구

허용강,배종원,원종선,이상율 한국진공학회 2011 한국진공학회 학술발표회초록집 Vol.40 No.0

호텔경영 업무효율에서의 아웃소싱효과

허용강,안장수,이창기 한국호텔관광학회 2010 호텔관광연구 Vol.12 No.3

This study was to explore an international comparison of competitive tourism destination strategies in the business environment that is constantly changing. If industries want to survive and grow, they have to quickly adapt and cope with the changes. In our current business environment, industries need consistent changes and new opportunities making skills, and within the industries, creative strategies for self-improvement and adaptation ability are needed. In the era of unlimited competition, hotels have to assure their competitive advantage through self-improvement. Along with the issue of how to efficiently use the industry’s resources, the issue of how much to use outside workers and resources has been becoming important. In this respect, hotel outsourcing has been actively put in to action, however it is true that there is a limit in hotel outsourcing research. Therefore, in this research, I have established the factors that affect hotels’ outsourcing related employees’ feelings about growing hotel business outsourcing and the achievements of outsourcing. By actual proof analysis of the relations between these factors and outsourcing results, I have tries to present the principal points hotel businesses have to see for success in outsourcing. As hotel businesses have to rely on more outsourcing due to high labor costs and low production that follows, many researches related to this matter should be conducted in different angles to be of help to hotel business.

호텔 종사원의 임파워먼트가 조직시민행동에 미치는 영향 : 호텔경영형태의 조절효과를 중심으로

허용강,최웅,오석윤 한국호텔관광학회 2014 호텔관광연구 Vol.16 No.2

This research sought to leverage the empowerment of hotel middle managers and organizational citizenship behavior of employees to verity the relationship of influence, and it also purported to verify whether the hotel operation type plays the role of adjusting between empowerment and organizational citizenship behavior. The population of subjects was a group of employees working at the hotel in Korea for collecting data for empirical study. A statistical package program, SPSS 18.0, was used for the analysis verifying statistical significance. Frequency analysis has been conducted to identify characteristics of the specimen, and reliability verification and factorial analysis have been implemented to verify validity of the construct. In addition, multi-center retrospective study has been conducted to identify the influence on each variable, and regression analysis has been implemented to see how variable groups were different along with a disparity of influence relationship. Results of this study are as follows:First of all, according to the factorial analysis, four factors of role meaning, role capacity, role influence, and self-determination ability have been derived in the empowerment. In addition, another four factors of interpersonal behavior, loyalty, altruistic/conscious behavior, and self-development behavior have been derived in the organization citizen's behavior. Second, it turned out that the role meaning, role capacity, and role influence were factors among the empowerment of organization citizen's behavior influencing on the loyalty, altruistic/conscious behavior, and self-development behavior. Third, according to the controlling effect of type of hotel management in terms of how empowerment of middle manager influences on the organization citizen's behavior only altruistic/conscious behavior and self-development behavior were verified.

Effects of the Gap Distance on the Characteristics of Gold Nanoparticles in Nanofluids Synthesized using Solution Plasma Processing

허용강,이상율 대한금속·재료학회 2011 METALS AND MATERIALS International Vol.17 No.3

In this study, gold nanoparticles for use in the production of nanofluids were synthesized with various gap distances of 1.0 mm to 16.0 mm between cathode and anode electrodes using Solution Plasma Processing (SPP). The size distribution and the shape of gold nanoparticles in the nanofluids were investigated using a UV-vis nir spectrophotometer and transmission electron microscope (TEM); the dispersion stability of the gold nanofluids was characterized using zeta-potential. The results demonstrate that the distances between electrodes have a strong effect on the formation of Au nanoparticles in nanofluids. The gap distance of 1.0mm produced the smallest average particle size, 17.7 ± 6.0 nm in diameter, and the most uniform size distribution. In addition, the zeta-potential of the gold nanoparticles synthesized with a gap distance of 1.0 mm was measured at −45.4 ± 1.3 mV, which suggests excellent dispersion stability of nanoparticles in the nanofluids. Possible mechanisms for the formation of nanoparticles in SPP are suggested. The electrons provided from the solution plasma are believed to play a vital role in producing the Au nanoparticles. Also, increased electrical energy from the plasma is responsible not only for increasing the surface areas of the nanoparticles in the solution by making the nanoparticles even smaller in size, but also for facilitating good dispersion stability by negatively charging the nanoparticles.

용액 플라즈마 공정을 이용하여 제조된 금 나노유체의 특성평가

허용강,이상율,Heo, Yong-Kang,Lee, Sang-Yul 한국분말야금학회 2010 한국분말재료학회지 (KPMI) Vol.17 No.4

In the present work, water-based gold nanofluids were synthesized by the solution plasma processing (SPP). The size distribution and the shape of gold nanoparticles in the nanofluids were investigated using high resolution transmission electron microscopy (HR-TEM). The dispersion stability of gold nanofluids was characterized using zeta potential, as well. The thermal properties of gold nanofluids were measured by utilizing lambda measurement device. Nanofluids containing nanoparticles with $64.0{\pm}42.1\;nm{\sim}18.10{\pm}5.0\;nm$ in diameter were successfully synthesized. As diameter of nanoparticles decreased, dispersion stability of nanofluids increased and the enhanced ratio of thermal conductivity increased. The nanofluid with nanoparticles of $18.10\;{\pm}\;5.0\;nm$ in diameter showed approximately 3% improvement in thermal conductivity measurement and this could be due to the enhanced Brownian movement.

감염병 보도 지침에 따른 에볼라 바이러스 언론보도 내용분석:국내 주요 일간지를 중심으로

허용강(Heo, Yong-Kang),차수연(Cha, Soo-Yeon),서필교(Seo, Phil-Kyo),김소영(Kim, So-Young),백혜진(Paek, Hye-Jin) 한국헬스커뮤니케이션학회 2015 헬스커뮤니케이션연구 Vol.12 No.-

본 연구는 공중 보건 및 커뮤니케이션 분야에서 거의 다루지 않았던 건강위험 이슈에 대해 국내 주요언론들이 언론 보도 지침을 준수하고 있는지 알아보고자 하였다. 특히 2014년에 공중 보건 영역에서 중요한 이슈로 부각된 ‘에볼라 바이러스’를 주제로, 보건 및 헬스 분야의 전문 학 술단체인 한국헬스커뮤니케이션학회와 보건복지부 출입기자단이 협업하여 수립한 ‘감염병 보도 준칙’과 세계보건기구(WHO)의 ‘감염병 커뮤니케이션 지침’을 바탕으로 내용분석을 실시하였다. 분석 결과, 본 논문에서는 바이러스의 ‘유행’과 관련된 정보가 ‘위험의 크기’ 혹은 ‘위험의 정도’ 와 관련된 기사보다 많았고, 바이러스 ‘질병에 대한 특성’ 및 ‘감염병 관리’에 대한 정보는 상대적으로 적었다. 본 연구는 기존에 개발된 감염병 커뮤니케이션 지침이 실제 뉴스에서 잘 적용 되고 있는지를 살펴봄으로써, 보도 지침의 중요성과 더불어 지침을 준수하는 것의 중요성을 촉구하는데 있어 경험적 증거로 사용되는데 기여하고자 한다. Media play a crucial role in informing the public about an emerging infectious disease and its health risk. Thus, Korea Health Communication Association and press corps in the Ministry of Health and Welfare worked together to establish the infectious disease reporting guidelines, guided by and benchmarking World Health Organization(WHO)'s Outbreak Communication Guidelines. But little is known about the extent to which media comply to such guidelines. The purpose of this study to examine how mainstream newspapers report an emerging infectious disease comply to the guidelines in the context of Ebola Virus. A content analysis of 213 major newspaper reports indicated that reports cover individual incidents of virus infection more than the degree and magnitude of risk of Ebola Virus. The frequency of reports covering disease characteristics and control of Ebola Virus was not common. Accuracy of information on the Ebola outbreak and preventive guidelines for the public has much room for improvement. This study provides a first step to document evidence on how much media comply to the outbreak communication and reporting guidelines. The results can be used to urge the media to take more responsible reporting practices in such contexts of life-threatening events.

레스토랑 단골 고객의 심리적 소유감에 관한 연구

이형수,이현종,허용강 한국외식경영학회 2010 외식경영연구 Vol.13 No.2

In this study, an empirical analysis was made to look for variables, which affect psychological ownership on customers of restaurant, and catch how the psychological ownership generated by these variables actually affects word- of-mouth intention,relationship retention intention or willingness-to-pay and resistance toward competition. The SPSS 15.0 and AMOS 7.0 were used for an analysis. Analysis showed as follows. First, the control of service hadn't any effect on the psychological ownership. Second, in the process that service is produced and is provided to customers, the higher their participation was, the psychological ownership of restaurant grew big. Third, when customers felt that the image and values of them and enterprises are equal, their psychological ownership of restaurant grew big. Fourth, the intimacy of restaurant had a positive effect on the psychological ownership. Fifth, the higher the psychological ownership of restaurant was, the psychological ownership of restaurant had no impact relationship with relation retention intention, which customers are trying to continuously use a restaurant. Finally, the psychological ownership of restaurant had a positive effect on the resistance toward restaurant's competition.

새로운 미디어 등장에 따른 PR연구 내용분석

한미정,변혜민,최익성,김정은,윤종혁,허용강 한국PR학회 2015 한국PR학회 학술대회 Vol.2015 No.11

공간정보산업 진흥을 위한 기초연구(2017년 공간정보산업 현황과 전망)

정동훈,허용,이재강,박우진,정욱락 한국정책학회 2017 한국정책학회 동계학술발표논문집 Vol.2017 No.-