• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.145-146
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• 2020

최근 급증하고 있는 다문화사회에서 다문화 가정의 가족 구성원의 안정적인 상태로의 정착과 특히 그 자녀들이 '건강하고 행복한 한국인'으로 동반 성장할 수 있는 방안 마련이 현재 주요 과제 중 하나라고 할 수 있다. 무엇보다도 한국의 저출산율은 사회를 구성하는 문제와 인구 노동력 감소로 이어져 국력까지 약화시킨다. 이를 해소할 방안 중 하나로 외국인들을 부족한 한국사회의 인구로 보충하는 것이다. 다문화 가정을 통한 자녀 출산과 그 자녀들로 하여금 성인인구를 늘리는가 하면 다문화가정의 자녀들이 사회의 구성원으로서 올바른 성장과 건강하고 행복한 한국인이 될 수 있도록 돕는 일이 우리 한국의 심각한 사회적 상황을 안정적으로 잘 지탱할 수 있는 길이다. 무엇보다도 감정의 기복이 심한 청소년기를 겪고 있는 다문화 가정의 청소년들의 학교생활적응과 관련된 연구의 필요성은 매우 중요한 역역이라고 볼 수 있다. 이에 본 연구는 학교생활적응에 중요한 작용을 하고 도움을 줄 수 있는 연구들의 필요성에 관한 방안들을 모색하고 향후 연구에 적용함으로써 학교생활에 대한 적응력을 높일 수 있는 기초적인 자료가 제공될 수 있도록 하는데 목적이 있다.

• 월간 기계설비
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• no.8 s.205
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• pp.44-48
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• 2007

금호건설은 지난 1967년 제일토목건축주식회사로 시작, 78년 금호건설로 상호 변경해 지금까지의 이어오고 있다. 토목, 건축은 물론 공항시설과 물류시설, SOC사업을 비롯해 KIDEA공법 등 독자적 기술을 가지고 있는 환경사업분야, 30년 노하우를 지닌 주택사업분야까지 건설 전 분야에서 고도의 기술력을 유지해 온 40년 전통의 10대 건설업체다. 금호건설은 도심공항터미널, 아셈 컨벤션 센터, 인천국제공항, 대전-진주간 고속도로 8공구 등을 건립하면서 국가 기반시설 설립을 주도해왔다. 2002년 3월 국내 하수처리시설 건설 기술인 KIDEA 공법으로 첫 장영실 상을 수상하며 환경분야에서 독자적 위치를 확고히 해왔으며, 2004년 광주신청사, 2006년 전북도청사가 한국건축문화대상을 수상하며 건축물에 있어서도 최고의 시공능력을 인정받아왔다. 내실 있는 기업이 되기 위한 노력을 기울여온 금호건설은 "안정" 과 "도약" 이라는 금호아시아나그룹 경영키워드와 발맞춰 "수익성" 과 "성장성" 모두를 이뤄내며 국내 10대 건설업체의 입지를 확고히 하기위한 금호건설의 행보는 오늘도 이어지고 있다

• Journal of Appropriate Technology
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• v.7 no.1
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• pp.72-81
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• 2021

Gravity-driven membrane (GDM) filtration system based on the nanofiber membrane was investigated. This system can be operated with little energy demand due to a gravitational pressure-driven filtration and biological fouling control strategy. Moreover, the optimal module configuration based on the high permeance of nanofiber membrane can provide a significantly high water productivity. In order to evaluate its applicability potential, the pilot-scale (3000-5000 L/day) systems with nanofiber membranes were operated in developing countries (Kiribati and Tuvalu). Our results showed that the 14-92 L/(m²×h) of the permeate flux was determined indicating a stabilized water productivity. In addition, the permeate water indicated a high removal rate (more than 99.99%) of turbidity and bacteria. Consequently, the system can provide a stabilized water production with safe permeate water quality during long-term operation. These findings exemplify an effective approach to decentralized drinking water treatment for developing countries.

• Journal of Korea Entertainment Industry Association
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• v.14 no.7
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• pp.589-597
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• 2020

The purpose of this study was to verify the acne care improvement effects of natural cosmetics with distilled bamboo vinegar contents and develop the materials for acne cosmetics. For the research subjects, 20 teenage boys and girls were selected and based on random number table, 10 subjects were assigned in the control group that used natural cosmetics (foam cleanser, toner, facial pack) and 10 subjects were assigned in the experimental group that used natural cosmetics with distilled bamboo vinegar contents (foam cleanser, toner, facial pack). The natural cosmetics was used for 12 weeks, and Mark-·Vu facial analysis system was used to measure the sebum, pore size, and redness before using the natural cosmetics, 6 weeks after using the natural cosmetics, and 12 weeks after using the natural cosmetics. For the collected data, SPSS v. 21.0 statistics package program was used for the analysis, and the results are as follows. First, it is a safe natural cosmetics based on the results of the patch test to confirm the skin safety of the natural cosmetics. Second, homogeneity was secured based on the results of the test of homogeneity for the sebum, pore size, and redness of the control group and experimental group. Third, in the verification of acne skin improvement effects of natural cosmetics with distilled bamboo vinegar content, the experimental group had higher reduction rate of changes in the sebum, pore size, and redness on the forehead and right cheek compared to the control group. Therefore, it was identified that the natural cosmetics with distilled bamboo liquid content is safe for the skin and effective for reducing the sebum, pore size, and redness for acne skin. For this reason, it is anticipated for distilled bamboo vinegar to be used in the cosmetics industry.

• 대한공업교육학회지
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• v.35 no.2
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• pp.140-158
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• 2010

The purpose of this study was to investigate the influences of 5 intrinsic and 5 extrinsic factors on technology teachers' job satisfaction and commitment. The collected data from 108 technology teachers in Gwangju city and Jeolla Nam-do, were analyzed and tested at p<.05 or more by using Multiple Regression through SPSS program. The levels of the teachers' job satisfaction and commitment were respectively M=3.91 and M=3.69 at Likert scale. Among 5 intrinsic and 5 extrinsic factors, other factors except for two factors-work environment and salary were, even if a little, satisfied to the teachers. They were more satisfied with the intrinsic factors than the extrinsic. $R^2$=.515 was found between teachers' job satisfaction and the combination of 10 factors-achievement, work itself, responsibility, opportunity for growth, recognition, job safety, work environment, salary, supervision skill, human relation. $R^2$=.616 was between teachers' commitment with the combination of the factors. The combinations were respectively accountable for 51.5% of the job satisfaction change and for 61.6% of the commitment change. The relative importances of the factors were salary first, achievement second and others not for the job satisfaction, and achievement first, opportunity for growth second and others not for the commitment. The generalization of the above results is limited to improving technology teachers' job satisfaction and commitment at the secondary level in Gwangju city and Jeolla Nam-do.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.5
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• pp.181-186
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• 2019

In order to reduce the fossil fuels consumed in conventional commercial independent diesel generators in the same environment as the island area, it is necessary to develop a photovoltaic system that will bear more than 40% of the independent system capacity. For this development, it is necessary to develop a high-capacity inverter that can improve the stability of the independent system installed in the island area and supply high-quality power to the load. In addition, the EMS power generation control system for the independent grid photovoltaic power generation system is a parallel operation power control system of the diesel generator connected with the solar power generation system. It controls the output of the diesel generator according to the load ratio and the solar power generation, A stable supply system is needed. This independent grid photovoltaic generation system can increase the solar power supply to the independent system area and increase the power stability of the independent system and further reduce the use of fossil fuel due to the ineffective power control of the independent system. It is expected that the economy will be secured early.

• Journal of Life Science
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• v.27 no.2
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• pp.194-201
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• 2017

Rapeseed (Brassica napus L.) is an oil crop classified as Brassicaceae, and it is widely grown worldwide. To develop a drought-resistant rapeseed, the ${\beta}$-glucosidase 1 (AtBG1) gene was introduced into rapeseed because drought- and salt-resistance phenotypes were observed when the AtBG1 gene was overexpressed in arabidopsis. Newly developed genetically modified crop must be proved to be safe. Safety assessments are based on the historical usage and scientific reports of a crop. In this study, we examined the potential acute oral toxicity of AtBG1 protein expressed in genetically modified (GM) rapeseed and calculated the minimum lethal dose at 6 weeks in both male and female ICR mice. AtBG1 protein was fed at a dose of 2,000 mg/kg body weight in five male and five female mice according to the marginal capacity concentration of OECD, 2,000 mg/15 ml/kg. Mortalities, clinical findings, and body weight changes were monitored for 14 days after dosing, and postmortem necropsy was performed on day 14. This study showed that no deaths occurred in the test group, and AtBG1 protein did not result in variations in common symptoms, body weight, and postmortem findings between the two groups. This showed that the minimum lethal dose of AtBG1 protein expressed in transgenic rapeseed exceed 2,000 mg/kg body weight in both sexes.

• Proceedings of the Korean Information Science Society Conference
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• 2007.10d
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• pp.585-588
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• 2007

WMNs(Wireless Mesh Networks)은 기존 유 무선망 구축 시 발생하는 고가의 비용 및 이동성 제약 등의 단점을 극복하기 위해 제안된 네트워크 구조로써 네트워크 구축비용에 비해 광범위한 인터넷 접근영역을 제공하는 장점을 가진다. 특히, IEEE 802.11e를 MAC 계층으로 사용하는 WMN은 기존 IEEE802.11에서 보다 강화된 QoS(Quality of Service)기능을 가지므로, 안정적 멀티미디어 관련 응용 계층을 지원하는 WMN 구축을 위해 주목받고 있는 기술 중 하나이다. 본 논문은 광주과학기술원에 설치된 MIMC(Multi-Interface Multi-Channel) WMN 테스트베드를 QoS 기능 지원을 위해 IEEE 802.11e 기반으로 확장한다. 특히, 확장에 필요한 소프트웨어 요소 및 하드웨어 요소에 대해 논한다. 또한, 확장된 IEEE 802.11e WMN 테스트베드를 사용하여 현재 주목받고 있는 IEEE 802.11e기반 WMN의 기본 쓰루풋 성능, 쓰루풋 차별화 성능등을 실험적으로 분석한다.

• Journal of Digital Convergence
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• v.19 no.7
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• pp.209-215
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• 2021

This study is a system development for voice information protection equipment in major meetings and places requiring security. Security performance and stability were secured with information leakage prevention technology through generation of false noise and ultrasonic waves. The cutoff frequency band for blocking the leakage of voice information, which has strong straightness due to the nature of the radio wave to the recording prevention module, blocks the wideband frequency of 20~20,000Hz, and the deception jamming technology is applied to block the leakage of voice information, greatly improving the security. To solve this problem, we developed a system that blocks the recording of a portable smartphone using a battery, and made the installation of a separate device smaller and lighter so that customers do not recognize it. In addition, it is necessary to continuously study measures and countermeasures for efficiently using the output of the anti-recording speaker for long-distance recording prevention.

• 대한공업교육학회지
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• v.34 no.2
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• pp.230-247
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• 2009

This study was performed to investigate and analyze technology teachers' and other subject teachers' satisfactions with motivation-hygiene factors in order to provide informations for their job motivation at secondary schools. The data were collected from 216 technology teachers and other subject teachers in Gwangju City and Chon-nam Province and analyzed and tested at p<.05 or more by employing t-test through SPSS program. The average satisfaction levels of the teachers were M = 3.85 with compounded motivation factors and M = 3.38 with compounded hygiene factors. The former is higher the latter. In the satisfaction levels of individual factors responsibility was first, work itself second, achievement third, and human relation, job safety, growth opportunity, recognition, supervision skill subsequently went down. The satisfaction levels of these factors were higher than neutral(M = 3.00). On the other hand, the satisfaction levels of work environment and payment were a little lower than neutral. Technology teachers were more satisfied than other subject teachers with responsibility and human relation factors among 10 motivation and hygiene factors. They had more positive perception than the others with these two. Generally, these teachers groups presented almost the equal satisfaction level with motivation and hygiene factors. The data were collected from technology teachers and other subject teachers in Gwangju City and Chon-nam Province and thus these might not be applicable to teachers in other cities and provinces.