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상호 교류 및 경쟁요소의 속성이 성과에 미치는 영향 - 모바일 게임을 중심으로 -
윤미란 ( Yoon Mi-ran ),정연동 ( Jung Yun-dong ) 경기대학교 관광종합연구소 2017 여가관광연구 Vol.27 No.-
본 연구는 2011년 국내 스마트 폰의 등장으로 모바일 게임시장의 성장 요인에 주목하여 연구를 수행하였다. 스마트 폰은 종래의 모바일 게임 시장의 단순성을 보다 복잡하고 다변화시켜 구매자의 욕구를 충족시키는 계기가 되었다. 이에 본 연구에서는 스마트 폰 게임의 상호교류의 기능과 경쟁요소의 기능이 게임의 인기 순위에 미치는 영향을 알아보고자 하였다. 이를 토대로 2014년 4월부터 2014년 6월까지 3개월을 기준으로 앱애니의 차트에서 제공하는 게임 순위를 바탕으로 정보를 수집하였다. 결과적으로 타인과의 교류의 기능은 국내 게임시장의 순위에 정(+)의 영향을 보이고, 랭킹기능 또한 국내 게임시장의 순위에 정(+)의 영향을 미치는 것으로 나타났다. 본 연구결과는 그동안의 게임의 단순성에서 벗어나 상호 교류의 기능과 경쟁적인 랭킹의 기능이 구매자의 욕구를 자극하고 게임산업 발전에 기여하고 있다는 측면에서 실무적인 가치가 있다고 판단된다. This study focuses on growth factors of mobile game market in 2011 with the emergence of smartphones in Korea. The smartphone has become an opportunity to satisfy buyers` needs by complicating and diversifying the simplicity of the conventional mobile game market. The purpose of this study is to investigate the effects of mutual exchange function of smartphone games and competitive factors on popularity of games. Based on this, we collected information based on the game rankings provided by the app annie charts for three months from April 2014 to June 2014. As a result, the function of exchanging with other people has a positive effect on the ranking of domestic game market, and ranking function has a positive effect on the ranking of domestic game market. The results of this study show that the functions of mutual exchange and competitive ranking are devoid of the simplicity of the game in the meantime and have practical value in terms of stimulating the desire of buyers and contributing to the development of the game industry.
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치과용 단층촬영을 이용한 Stainless-Steel File과 MFile-System<sup>®</sup> 전동식 기구의 근관 성형 능력에 대한 비교 연구
서동진,윤미란,이린,유미경,Seo, Dong-Jin,Yoon, Mi-Ran,Lee, Rin,Yu, Mi-Kyoung 대한턱관절교합학회 2006 구강회복응용과학지 Vol.22 No.2
Objectives The aim of this study is to compare the quality of root canal preparation completed using MFile-$System^{(R)}$ instrument ( Komet, Gebr.Brsaseler, Germany) and conventional stainless steel file in the canals of Maxillary molar teeth that had a canal curvature between $25^{\circ}$ or more Materials & Methods Buccal canals of 24 first and second maxillary molar teeth, extracted for periodontal and prosthetic reasons were used. Tissue fragments and calcified debris were removed from teeth by scaling and the teeth were stored in 10% formalin solution for 24 hour. Then, teeth were stored in saline until used. To be included the roots had to have completed formed apices and angle of curvature ranging between $25^{\circ}$ or more according to the criteria described by Schneider(1971). Palatal and Second mesiobuccal canals were not included. Teeth were embedded into transparent acrylic. The teeth were randomly divided into two experimental groups. All teeth were scanned by Dental CT (PSR9000N, Asahi, Japan) to determine the root canal shape before instrumentation. Image slices were prepared from the apical end point to the pulp chamber. The first two sections were 2 mm from the apical end of root and 2 mm below the orifice. Further section was recorded, dividing the distance between the sections of apical and coronal levels into two equal lengths. 12 teeth were instrumented using stainless steel fileand another 12 teeth were instrumented using MFile-$System^{(R)}$. Following the completion of the instrumentation, the teeth were again scanned and compared with the cross sectional images taken prior to canal preparation. Amount of transportation and centering ability was assessed. Student's t-test was used for statistical analysis. Result Less transportation occurred with MFile-$System^{(R)}$ rotary instrumentation than stainless steel instrument. MFile-$System^{(R)}$ had better centering ability than stainless steel instrument. Conclusion MFile-$System^{(R)}$ rotary instrumentation transported canals less and had good centering ability.
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Tylosin Production by Mutant Resistant to Oleic Acid
최두복,문옥란,윤미란,지성남,신대윤,Choi, Du-Bok,Choi, On-You,Moon, Ok-Ran,Yoon, Mi-Ran,Ji, Sung-Nam,Shin, Dae-Yewn Korean Society of Environmental Health 2005 한국환경보건학회지 Vol.31 No.5
Streptomyces fradiae로부터 Tylosin을 효율적으로 생산하기 위해 지방산 내성균주을 분리 했다. 여러 지방산중에서 oleic acid 1.6 g/l 이상이 첨가될 때 세포 성장이 완전히 저해 되었다. 그러나 oleic arid 1.2 g/l에서 얻어진 TM-224-1 균주는 최대 균체농도와 tylosin 생산이 얻어졌다. 또한 oleic acid 소비속도는 parent strain 비해 3.8배 증가했다. Oleic acid 내성균주, TM-224-1 균주와 parent strain을 이용해서 jar fermentor에서 균체농도, tylosin 생산, 그리고 rapeseed oil 소비를 표준조건하에 5일동안 비교하였다. TM-224-1 균주을 이용할 경우 균체 농도는 초기에 parent strain비해 증가했으나 배양중반부터는 감소하기 시작했다. rapeseed oil 소비의 경우는 거의 비슷했다. 그러나 Tylosin 생산 수율은 parent strain 비해 약 3.2배 증가했다. When rapeseed oil as the carbon source was used for tylosin production from Streptomyces fradiae TP-1239 was very sensitive to oleic acid. Cell growth was restrained by adding 0.8 g/l of oleic acid to the culture broth. Mutant strain TM-224-1 resistant to 1.2 g/l of oleic acid was obtained by screening in solid and liquid media containing oleic acid. The uptake rate of oleic acid by TM-224-1 was approximately 3.8 fold higher than the parent strain. For comparing the TM-224-1 and the parent strain, batch cultures were carried out in a jar fermentor. Cell growth of TM-224-1 strain was higher than the parent strain after two days of culturing. However, after four days of culturing, it was similar to that of the parent strain. The amount of rapeseed oil consumed by TM-224-1 and the parent strain were 60.5 and 78.2 g/l, respectively. The production and yield of tylosin was aproximately 2.0 and 3.2 fold higher than the parent strain, respectively. From these results, it was concluded that this mutant, which was resistant to oleic acid, has improved tylosin production.
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윤미란,이정흔 충남대학교 체육과학연구소 2007 體育科學硏究誌 Vol.25 No.1
This Study intends to search for the major factors affecting physical education teacher's empowerment in secondary school and to explain how differently these factors would be recognized according to the sexes of physical education teachers, ages, education careers, school levels, positions, and scholastic ability. Based on the study objectives, in order to make clear affecting factors and relationships between the factors, I selected the following specific questions. First, according to demographic characteristics (sexes, ages, education careers, school levels, positions, and scholastic ability), how differently the major factors affecting empowerment would be recognized. Second, which influences do the major factors affecting empowerment(school culture, leadership of headmaster, participation of decision making) have on? The target of this study is 170 physicals education teachers in Gyunggi-do City G which were chosen with proportional grouping method by mans of making calls and visiting after informing the reasons and objectives of this study and getting agreements, I chose visiting places and times and gave out questionnaires. Given out questionnaires are 170 altogether. However, except for 20 questionnaires missed for the reasons of lack of faithfulness, 150 questionnaires were analyzed using program SPPS 12.OK for Windows. For analyses of materials, I used the following statistical analyses. First, one-way ANOVA or T-Test were used in order to examine the main factors affecting empowerment and recognition difference according to physical education teacher's demographic characteristics. Second, Multiple Regression Analysis was used to make clear the main factors affecting empowerment. The results and conclusions of this study are following. First, according to the physical education teacher's demographic characteristics, the main factors affecting empowerment and components for recognition(capability, influencing power, meaningfulness, and autonomy) are different in sex, age, position, education career, scholastic career. That is, male teachers rather than female teachers(in leadership factor of headmaster), headmasters rather than teachers(in empowerment autonomy factor, decision-making participation factor, headmaster's leadership factor, school factor), older, higher education career, higher scholastic ability made recognition highly. On the other hand, school levels didn't. Second, decision making participation(P<.001) and headmaster's leadership factor had meaningful influence on empowerment, but school culture factor didn't. In that the main factors affecting empowerment affect the empowerment components, decision-making participation has an influence on capability component, decision-making participation and headmaster's leadership factor have an influence on the influencing power and decision-making participation has an influence on autonomy component. Also, among the lower rank factors in the factors affecting empowerment, reformative leadership in headmaster's leadership affected empowerment and professional factor in decision making participation factor (P<.001) affected the empowerment. In conclusion, to make clear the main factors affecting physical education teacher's empowerment, I chose the dependent variables as the school culture, headmaster's leadership, decision-making participation, so I knew that the affecting order is the decision-making participation, headmaster's leadership, and school culture. The results of this study is helpful in understanding the various affecting factors for empowerment and the affecting degree of the factors. However, through succeeding studies, it is necessary to generalize how to improve the empowerment and how to show the specific ways. Now that decision-making participation affects the teacher's empowerment, it is necessary to extend both teacher's decision-making process and autonomy for education activity and activate decision-making mechanism for getting opinions. For these, it is necessary to use interviews with headmasters, various committees and councils in school, and surveying methods for target's introspection. Also following studies would be needed to reflect the representative opinions of each groups without any neglected groups. Moreover, through reflecting the lower-career and younger teacher's opinions, well-balanced decision makings should be made for improving teacher's empowerments.
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