• Proceedings of the KAIS Fall Conference
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• 2001.05a
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• pp.353-357
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• 2001

이동통신과 인터넷의 발달은 시간과 공간에 구애받지 않고 인터넷에 접속하여 각종 서비스를 이용하는 무선 인터넷 시장이 도입 및 성장단계에 진입하도록 만들었다. 아직은 기술적, 물리적으로 많은 제약이 있지만 이러한 문제는 곧 해결되리라 예상하고 있다. 본 논문에서는 먼저 무선 인터넷에 관련된 기술을 알아보고 무선 인터넷 구축방법과 아울러 무선 인터넷의 기술혁신에 관하여 연구하였다.

• Korean Journal of Ecology and Environment
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• v.51 no.2
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• pp.168-173
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• 2018

Mauremys reevesii is a Korean endemic turtle, and designed as an endangered species and national monument in South Korea. Recently, the population of the species has been dramatically declining because of habitat destruction, pollution and illegal capture. Moreover, small population size, difficulty of securing individuals, and lack of research are factors that impede the effective management of the species. In this study, we tested the effect of individual breeding and feeding on the seven juveniles of M. reevesii. Our results showed individual breeding and feeding were guaranteed the effective growth and development. Noticeable growth was confirmed in both body weight and carapace length. Moreover, the size difference among the individuals appeared at the start of this study decreased at the end of this study. Artificial breeding during the wither season was not caused disorders on the growth, behavior and morphology. This individual breeding may lead to effective growth and development, and it will be a way to increase the survival rate when the juveniles released into the wild.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.7 no.2
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• pp.324-333
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• 1997

Porous alumina specimens with 80~92% relative densities were prepared from ultrasonic spray pyrolyzed alumina Powders by sintering at $1600^{\circ}$~ $1700^{\circ}C$. The exaggerated grain growth appeared to high sintering temperature and long soaking time. The microstructural development during sintering was investigated using image analysis. In the study of grain growth kinetics for sintering for spray prolyzed alumina powder, the activation energy for normal grain growth was 386.77 kJ/mol.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.89-90
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• 2001

Insulin-like growth factor-I(IGF-I)은 70개의 아미노산으로 이루어진 polypeptides로서 pronsulin과 구조적으로 유사하다(Froesch and Zapf, 1985). IGF-I은 척추동물에서 성장호르몬의 매개로 생성되어 동물의 성장 발달에 중요한 역할을 하고 있으며 세포의 성장, 분화, 대사에 다양한 효과를 보여주고 있다(Cohich and Clemmons, 1993; Baxter, 1993). 또한 체성장을 가속화시키고 in vivo에서는 단백질의 합성을 촉진시킨다(Rotwein et al., 1987). (중략)

• 월간 기계설비
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• s.231
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• pp.87-89
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• 2009

국내의 기계 및 설비관련 학과는 모든 산업의 기초가 되는 기계를 다루는 기술인이 반드시 알아야 할 기계관련 이론과 다양한 실기를 통해 산업현장에 필요한 전문직업인 양성에 교육 목표를 두고 있다. 또한 오늘날 첨단 기계 산업의 발달 및 다양화에 따라 생산 및 생산시설 관리, 제품 설계 및 제작, 엔지니어링 마케팅, 컴퓨터 하드웨어 및 소프트웨어 관련 업무를 충실히 담당할 중견 전문가 양성도 담당하고 있다. 기계 설비분야의 미래를 책임질 기계설비 전문인을 양성하기 위해 기계 및 설비관련 학과는 2009년 현재 전국의 13개 대학에서 다양한 커리큘럼을 통해 배출하고 있다. 본지는 지난 3월호부터 전국의 기계 및 설비관련 학과를 소개한다.

• Korean Journal of Clinical Laboratory Science
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• v.49 no.1
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• pp.40-47
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• 2017

Granulosa cells, which surround the oocyte within the ovarian follicle, play an essential role in creating conditions required for the development of oocytes and follicles. The solute carrier family (SLC) is comprised of influx transporters of steroidal hormones, various drugs, and several other substrates. The differential expression of selected DEGs was confirmed using in situ hybridization analysis. SLC23A3 and SLC39A10 were highly expressed in the ovary. The SLC39A10 gene was expressed in the primordial follicle stage, but SLC23A3 was expressed in the growing follicle stage. Contrastingly, the expression of SLC23A3 was increased in granulosa cells at the growing follicle stage. The differential expressions of SLC23A3 and SLC39A10 between the primordial and primary follicles were additionally confirmed by using follicle isolations. The gene expression profile from the present study may provide insight for future studies on the mechanism(s) involved in primordial-primary follicular transition and suggestions to promote follicular development in ovarian dysfunction.

• The Journal of the Korea Contents Association
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• v.18 no.11
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• pp.393-405
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• 2018

Problem-Based Learning (PBL) is a student-centered pedagogy that integrates nursing knowledge, skills, and attitudes into clinical nursing practice. This pilot aims to apply a PBL module on preschoolers' growth and development in the nursing curriculum. This quantitative study was performed to develop a PBL module following Dick and Carye's program development process (planning, development, application, and evaluation phases), and to evaluate its effects using structured questionnaires among sophomore nursing students. These students formed teams of four or five people each and spent 40 minutes participating in the PBL module. Data were analyzed using descriptive statistics, t-tests, and content analysis. Metacognition level increased significantly. There was no significant difference in team efficacy between pre-test and post-test. Post-test learning satisfaction was high. Students reported obtaining knowledge and problem-solving ability with respect to preschoolers' growth and development and were satisfied with teamwork. This finding offers fundamental knowledge concerning the application of a PBL module in nursing curricula.

• Fire Science and Engineering
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• v.25 no.5
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• pp.62-68
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• 2011

A series of fire tests involving realistic solid combustible materials was conducted to quantify the heat release rate and investigate the fire growth characteristics during the initial fire growth stage. For these tests, single/double wood cribs, urethane cushion having polypropylene covers and wood crib on nylon carpet with urethane carpet padding were used as a fuel source. The fire growth coefficient of the solid combustible materials was quantified and the fire growth characteristics were compared with the $t^2$ fire scenario. The mean effective heat of combustion was evaluated by the total mass loss of fuel and total energy release concept and examined the effect of the ventilation and fire condition. The present study provides the practical information on the fire growth characteristics of solid combustible material to design to a set of fire scenarios for the fire risk analysis.

• Korean Journal of Agricultural Science
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• v.31 no.2
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• pp.97-104
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• 2004

Myostatin is a transforming growth and differentiation factor-${\beta}$ family member that acts as a negative regulator of muscle growth. Previously, mutations in the myostatin gene were known to be related to double muscling phenotypes in cattle. Because myostatin gene is highly related to muscle mass, also meat quality, in cattle, we sequenced whole myostatin mRNA and investigated the SNPs (Single Nucleotide Polymorphisms) in Korean cattle (Hanwoo). The results indicated that Hanwoo had an SNP in nt2385 and this mutation can be a useful marker with further verifications. We also investigated expression patterns of the myostatin gene from various muscle tissues and organs. Northern blotting results indicated that myostatin expression was restricted in muscles with variable expression levels. The results presented here can be used as a valuable information for meat quality related traits and muscle mass in cattle.

• 한국항공운항학회:학술대회논문집
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• 2016.05a
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• pp.50-54
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• 2016

최근 국내 및 세계운송시장은 경제성장 및 항공산업의 발달로 인해 증가하는 여객 및 화물 수요에 따른 항공수요를 감당하기위하여 신규 항공사의 설립, 노선의 확충, 신규항공기의 도입 등으로 지속적인 성장을 거듭하고 있다. 이러한 성장세에 따라 ICAO는 2030년 까지 약 980,799명의 조종인력이 부족할 것으로 전망하고 있으며 부족한 인력의 수급을 위해 국제기구, 국가차원의 연구 활동 및 조종사 양성사업을 진행하고 있다. 이에 따라 세계 및 국내 항공사에서도 지속적인 항공조종인력을 충원하고 있지만 숙련된 고급인력의 부족에 따른 어려움 있으며 기존 조종인력의 유출 또한 심각한 문제로 대두 되고 있다. 따라서 본 연구에서는 국내 조종인력의 채용현황, 요구조건의 분석을 통하여 보다 현실적이며 효율적인 수급방안에 관하여 제언하고자한다.