• Korean journal of communication and information
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• v.62
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• pp.264-285
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• 2013

The goal of the study is to analyze some structural issues of e-sport industry which has rapidly developed since 2000. Most of the previous studies regarding e-sport dealt with e-sport in terms of industrial prospect and economic values. In this study, we attempted to focus on employees of the field using in-depth interview method. Research findings show that there were several reasons for younger workers to early enter into the industry such as individualized labor market of post-modern era, growth of IT industry, and diversion of related occupational categories. The development of e-sport industry was possible with the youth' passion for the industry. However, their labor so called "professional" is vulnerable without systematic structure for them. This indicates that industrial prospect of e-sport industry and business models are not healthy. In addition, some implications of the findings were discussed.

• Journal of the korean academy of Pediatric Dentistry
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• v.36 no.1
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• pp.108-113
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• 2009

The functional regulator(FR) appliances act to remove the restrictive forces that prevent the normal maturation of the maxilla and mandible. FR appliances are different from other functional jaw orthopedic appliances(e.g., the twin block, bionator, and activator). $Fr{\ddot{a}}nkel$ has based his treatment philosophy on the concept that the capacity to regulate growth residues in the soft tissue environment, and that adequate space must be available for the proper development of the hard tissue. In class II malocclusion with mandibular retrusion, FR-II treatment is not only the change in the postural position of mandible, but also expansion of the dental arches. By balancing the neuromuscular environment, not only can severe malocclusions be treated successfully, but also the tendency toward relapse is minimized because the neural and soft tissue factors associated with the skeletal malocclusion have been addressed as well. We report cases using by FR-II that is applicated in cases of Class II malocclusion without fixed appliance, only FR-II and space supervision.

• Journal of Technologic Dentistry
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• v.17 no.1
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• pp.82-108
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• 1995

인력은 한 사회에 있어서 자본을 축적하며 자연자원을 개발하고 사회 경제 정치적 조직을 성장시키는 변화요인으로, 인간을 중심으로 하는 사회경제적 자원을 종합적으로 지칭하는 말이다. 이렇게 국가 사회가 필요로 하는 인력을 정부가 적절히 계획하여, 형성시키며, 배분 및 활용하는 문제를 논리적이고 일관성 있게 다루는 것을 인력정책이라 한다. 이러한 거시적이고 대 사회적인 정부의 인력정책은 국민의 건강과 생명을 보호하기 위한 보건의료 서비스를 제공해야 하는 의료인력을 대상으로 하는 경우 그 중요성이 더욱 특별하다 할 것이다. 국민에 대한 보건의료 서비스는 훈련된 보건 인력에 의해서 제공되며, 국가의 인력정책의 결과로 나타나는 보건의료인력 공급의 적합성은 인력의 불균형이라는 개념들을 통해서 검토될 수 있다. 의료인력의 불균형이라 함은 의료인력의 수, 종류, 기능, 분포, 질 등과 의료서비스에 대한 국민의 전체적 요구에 대응하여 정부가 생산하여 채용, 지원, 유시할 수 있는 정부 능력의 한계를 의미한다. 다시 말해서 국민에 대한 의료서비스의 적정화는 잘 훈련된(well qualified) 의료인력이 충분히 공급되어야(adequately supplied) 하고, 또한 적절히 분포되어야(well distributed) 한다는 양적, 질적, 그리고 분포의 세 가지 측면에서 살펴볼 수 있다. 질적, 양적, 그리고 분포의 불균형이라는 범주를 통하여 살펴본 치과기공사 분야의 인력정책에 대한 연구 결과와 개선방안은 다음과 같다. 첫째, 수적 불균형의 면에서 치과기공사의 인력은 1970년대 중반이래 계속 과잉 공급되어 왔으며, 이에 대해 정부는 그동안 소극적으로 대처하므로 과잉공급을 가속시켜왔다. 따라서 이러한 과잉공급을 최소하기 위해서는 치과이용에 대한 수요의 확장, 무면허자의 취업규제단속 및 대학의 치과기공학과 정원 축소 등을 생각해 볼 수 있다. 이러한 외형상의 과잉공급에도 불구하고 현업에 종사하는 실제인력은 수용에 비해 부족한 과소 공급현상을 빚고 있다는 점이 문제이다. 이러한 역설적인 현상을 타파하기 위하여 무면허자의 적발을 위시한 제도적 장치가 마련되어야 한다. 둘째, 질적 불균형은 수적 과잉공급에 의한 취업률 저하로 인한 실력 있는 전문인력 확보의 어려움과 전문 교육인력 및 교육시설의 열악한 조건이 원인으로 지적될 수 있으며, 이에 대한 해결방안으로 적절한 인력수요의 조절과 교육인력 및 시설 여건의 향상이 요망된다. 예컨대 3년제로 되어있는 학제를 4년제로 상향조정하는 방안을 고려할 수 있다. 세째, 치과기공사 분야의 인력분포 불균형은 그다지 심각하지는 않은 것으로 나타난다. 그러나 변화하는 소득수준과 사회환경은 의료인력과 균등한 지역적 분포에 대해 지속적인 관심을 가질것을 요청한다고 할 것이다. 이를 위하여 현재의 공중보건의 제도처럼 치기공 분야의 인력을 무의촌지역에 배치하여 공익요원으로 봉사케 하는 제도를 생각해 볼 수 있다.

• Journal of the KSME
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• v.27 no.6
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• pp.504-514
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• 1987

복잡한 전자부품의 조립시에 필요한 열적 디자인에 관한 정보는 오래전부터 실험을 통하여 얻어지고 있다. 실험적 데이터를 이용하여 무차원 파라미터로 표시된 실험결과는 꼭 같지는 않지만 현상적으로는 비슷한 상황에 응용될 수 있다. 여기서는 학술문헌에 나타나 있는 자연대류에 관한 실험적인 상관관계식들과 프레임에 수직으로 꽂혀있는 균일가열 전자회로기판의 모델에서 얻어진 무차원 자료들을 비교하고자 한다. 대부분의 자료들은 수정채널 Rayleigh수(Ra")가 15~100범위에 속하며, 이러한 범위는 부품이 조밀하게 배치된 기관이 서로 좁은 채널을 이루고 있으며, 동시에 상당한 전력을 소비하고 있는 경우에 해당한다. Wirt와 Stutzman, Bar-Cohen과 Rohsenow의 일반상관관계식은 AT'||'&'||'T Bell 연구소에서 개발된 전자기기를 이용하여 수집한 실험데이터를 잘 표현하고 있으며 10 < Ra" <1,000범위에서 추천될 수 있다. 두개의 유사한 상관관계식과 비교할 때 상당히 좋은 예측을 보였으며 또한 Sparrow와 Gregg의 연구결과와도 잘 일치하므로 Ra" < 10인 경우에 Aung의 완전발달층류의 채널유동방식, Ra" > 1,000인 경우에는 Aung등의 단일 수직평판 근사식이 추천될 수 있다. Coyne의 알고리즘에 의한 계산치는 10

• Korean Journal of Clinical Laboratory Science
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• v.49 no.3
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• pp.256-262
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• 2017

Essential oil from herb is known to exert pharmacological effects on the human body. In this study we investigated the antibacterial activity of 4 essential oils (teetree, rosemary, melisa, and lavender), as well as the blended mixture oil of teetree, rosemary, and melisa (TRM) on three bacteria, Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. Antibacterial analysis was performed using the standard disk diffusion method, and minimum inhibition concentration was determined by the broth microdilution method with different concentrations of essential oils (0.5, 1, 2 and 3 mg/mL). After incubation at $37^{\circ}C$ for 24 h, the antibacterial activity was assessed by measuring the zone of growth inhibition surrounding the disks. Herb oil with the inhibition zones showed varied values ranging from6 to 25 mm. However, the components of herb oil of TRM are as highly active as the teetree oil against pathogens, generating large inhibition zones for both gram negative and positive bacteria (13~22 mm and 8 mm inhibition zones). In the analysis for MIC, TRM showed growth-inhibitory effects at 0.0625% for S. aureus and E. coli, and 1.25% for P. aeruginosa. This result demonstrated that the anti-microbial activity of TRM was greater than a single herb oil, including oxacillin, rosemary, and teetrea. As a single herb oil, both rosemary and teetrea also had an anti-microbial effect by itself, and we can expect that the blended oil mixture may exert a synergistic effect against multidrug resistant bacteria, suggesting its future application in natural preservative agents for health food and cosmetics.

• Journal of Gifted/Talented Education
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• v.26 no.2
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• pp.299-318
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• 2016

The purpose of study was to explore science teachers' practical knowledge on teaching the gifted in science; namely, what kinds of instructional methods did they perceive as effective approaches based on their teaching experience with the gifted? Twelve science teachers who had 4-11 years of teaching experiences with the gifted students at the gifted center under the local educational offices participated in the study. The data source included in-depth individual interviews with the teachers. In results, the teachers became more aware of the academic potentials and characteristics of the students and had made efforts to develop their instructional methods more fitting to the characteristics and needs of the gifted. They emphasized four instructional aspects: 1) experience of authentic inquiry process and methods, 2) group activities focusing on leadership, communication and collaboration, and empathetic attitudes, 3) tasks promoting creative and convergent thinking, and 4) career awareness in the field of science, technology, and engineering. It is expected that this study provides more practical implications and insights for novice science teachers in the gifted education.

• Korean Journal of Microbiology
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• v.47 no.3
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• pp.218-224
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• 2011

Lactic acid bacteria (LAB) OA18 was isolated from yogurt prepared by using Kefir Grain as a starter. The OA18 strain was a Gram-positive, cocci-type bacterium, and able to grow anaerobically with $CO_2$ production. The OA18 strain grew well on MRS broth supplemented with 50 mM arginine at $30-37^{\circ}C$ and pH of 7.0-9.0. The optimum temperature and pH for growth are $37^{\circ}C$ and pH 7.0. The isolate fermented ribose, D-glucose, cellobiose, D-trehalose, but not L-xylose, D-melibiose, and inositol. The 16S rRNA gene sequence of the isolate showed 99.8% homology with the Enterococcus faecalis 16S rRNA gene (Access no. AB012212). Based on the biochemical characteristics and 16S rRNA gene sequence analysis data, it was identified and named as E. faecalis OA18. The E. faecalis OA18 strain showed a high ornithine-producing capacity in the presence of arginine and also showed an antimicrobial activity against Streptomyces strains such as Streptomyces coelicolor subsp. Flavus, S. coeruleorubidus, S. coeruleoaurantiacus, S. coelicolor, S. coeruleoprunus. The cell growth of E. faecalis OA18 strain was maintained in MRS broth with a NaCl concentration of 0-7%.

• Polymer(Korea)
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• v.34 no.3
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• pp.282-288
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• 2010

The porcine small intestinal submucosa (SIS) has been widely used as a biomaterial without immuno rejection responses and hyalunonic acid (HA) can be used as biocompatible materials to regenerate tissue. We developed the SIS sponge and HA loaded SIS sponges (SIS/HA) for the possibility of the application of the tissue engineering using annulus fibrosus (AF). SEM observation shows that SIS and SIS/HA sponges have interconnected and open pores. We demonstrated the presence of HA in SIS/HA sponge from C-O functional group observed by the FTIR analysis. In conclusion, we suggest that SIS/HA sponge may be useful to tissue engineering using AF cell. This may be due to the enhanced biocompatibility and higher water retention capacity of HA.

• Cartoon and Animation Studies
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• s.13
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• pp.163-179
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• 2008

It is no longer an issue that there is a big audience for Korean movies. More than 120 Korean movies are made each year. Many win prizes at film festivals around the world. But the number of animation movies made in Korea is decreasing even though the government tried to revitalize the animation industry in the mid-1990s. The problem is that all Korean animation movies were box-office failures, even though "Mary's Story" and "Oseam" were awarded prizes in world-famous animation festivals. Korean animation movies also face hurdles because of different cultural tastes of Korean audiences and problems with distribution. But there is a tremendous amount of potential and possibilities for Korean animation movies to be box-office blockbusters and artistic successes. There are ways to develop and revitalize the Korean animation industry and make it of the most important businesses and cultural influences in Korean society.

• Korean Journal of Animal Reproduction
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• v.23 no.3
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• pp.213-220
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• 1999

The litter size has been the primary interest of economic traits in pig reproduction. It has been recently shown that insulin-like growth factor-Ⅰ(IGF-Ⅰ) plays roles in establishing pregnancy and in supporting fetal growth and development. But, the effect of serum IGF-Ⅰ on litter size has not been studied. Therefore, this study was conducted to relate serum IGF-Ⅰ concentration with porcine litter size and to investigate the possible connection with estrogen receptor(ER) as a candidate gene for the litter size. Sera during day 45 to 105 of pregnancy were collected from two groups showing high and low litter size and serum IGF-Ⅰ concentration was measured by radioimmunoassay (RIA). IGF-Ⅰ levels in both groups decreased gradually as pregnancy stage proceeded but were not significantly different. Secondly, DNA was extracted from blood and PCR-RFLP was utilized to analyze ER genotypes of pigs in each group, which produced three polymorphic patterns. Based on the ER genotypes analyzed, low litter size group showed higher IGF-Ⅰ concentration than high litter size group. Taken together, the results indicate that the serum IGF system was correlated with steroid system but not with the litter size in pigs. Thus, this study implies that porcine litter size could be determined locally at the ovary level.