• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.117-128
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• 2016

The growing socio-economic effect caused by science and technology requires public to participate in policy-making process, which makes government to boost public understanding of science(PUS). Government has also exerted to construct infra for PUS. However results are not so meaningful. The government-funded science museum has mainly provided the program for students. Besides, science broadcasting channel has recorded the worst viewing rate. Meanwhile, some of the private sector-manufactured contents have attracted public attention in recent years, which is realized by considering elements such as an interesting topic selection, use of outside experts, two-way communication system, level adjusting for public through flexible running system. This study analyze podcast based program, face to face lectures, display contents by private industry, fab lab etc. on the base of the reciprocal PUS model to sort out the reason they have successful results. Futhermore, it argues that government should intensify support for private sector and create synergy effect by cultivate collaboration system between government and private sector to enhance the efficiency of PUS and offers public policy to realize the plan.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.389-392
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• 2010

The problem for the air pollution in the office or the indoor except a specific working area is the continuously issue since the human beings have lived in the dwelling facilities. Measures for that problem are urgently needed. It's possible to solve for the freshair of outside with enough ventilation but that is the awkward situation to be managed by person. It's feasible to supervison and control easily if you use to sensor network under the network. It works out to sense, storage, process, deliver every kind of appliances and environmental information from the stucktags and sensors. And it is possible to utilize to measure and monitor about the place of environmental pollution which is difficult for human to install. It's studied constantly since it be able to compose easily more subminiature, low-power, low-cost than previous one. And also it spotlights an important field of study, graft the green IT and IT of which the environment and IT unite stragically onto the Network. This study compose a IAQM(Indoor Air Quality Management) under the network, suggest the application of supervision and control.

• Korean Journal of Health Education and Promotion
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• v.12 no.1
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• pp.151-164
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• 1995

한국보건사회연구원의 조사결과에 의하면 이상적인 성비는 1960년의 160에서 1991년에는 130으로 크게 낮아졌다. 아직도 한국 부인들의 이상자녀수는 여아보다 남아가 더 많게 나타나고 있다. 남아의 가치에 대해서는 1960년대에는 노후봉양이 가장 으뜸가는 변수였으나, 최근에는 가계계승보다도 그 중요도가 떨어지고 있는 경향을 보이고 있다. 또한 정서적 유대, 즉 아들이 있어야 든든하다는 식의 주장이 보다 강한 이유로 지적되고 있다. 이러한 남아선호사상은 사회적으로 상당한 영향을 미치는 요인이 되고 있다. 즉 성비의 불균형과 장래의 결혼시장의 혼란이 초래된다는 문제가 그것이다. 예를 들면 현재 셋째 및 넷째 아이의 성비가 크게 상승하고 있는 문제이다. 즉, 1992년의 경우 첫째 아이의 출생성비는 여아 100명당 남아 196.5이고, 넷째 아이의 경우는 229.0으로 더욱 높게 나타났다. 그리고 2000년에는 결혼적령의 남녀 성비의 차이는 신부보다 신랑이 19.1%나 많아질 것이며, 이러한 차이는 2010년에 가면 더욱 심화되어 신부감보다 신랑감이 무려 28.6%가 초과될 전망이다. 가뜩이나 농촌 총각들이 장가 들기가 어려운 터에 장가 못갈 총각이 크게 늘어날 수 밖에 없는 사정이 된다면 사회적으로 큰 혼란이 야기될 것임에 틀림없다. 이러한 성비의 불균형이 초래되는 배경은 남아선호사상의 잔존으로 저출산 내에서 태아의 성을 감별함으로써 선택적인 인공유산을 하는데서 비롯되는 것으로 볼 수 있다. 따라서 현재에도 불식되지 않고 있는 남아선호사상에 대한 주의를 다시 한번 환기시켜야 할 것이다. 특히 이 분야의 보다 깊은 연구를 지속적으로 실시하여 대응전략의 제시에 노력해야 할 것이며, 우선 무엇보다도 여성들의 사회적 지위향상 등 여권신장에 관한 정책적 노력과 더불어 교육 홍보를 통한 노력이 강화되어야 할 것이다. 아울러 태아의 성감별 등 바람직하지 못한 의술남용 행위 등을 근절토록 보다 강력한 법적 적용에도 행정력을 집중시켜 나가야 할 것이다.

• Journal of the Korean Society of Propulsion Engineers
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• v.14 no.3
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• pp.61-68
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• 2010

A small high altitude test facility has been developed to investigate ignition performance of a small gas-turbine combustor under high altitude conditions. Supersonic diffusers and a heat exchanger were used to perform a low pressure and a low temperature condition, respectively. Experimental results showed that the low pressure environment could be controlled by upstream pressure of primary nozzle flow and low temperature environment by mixture ratio of cooled air and ambient air. Ignition performance tests were performed to verify the performance of the facility under simulated high altitude conditions. Conclusively, it was proven that the test facility could be used for ignition performance test of a small gas-turbine combustor under high altitude condition of approximately 6,100m.

• Journal of the Korean Vacuum Society
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• v.19 no.5
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• pp.319-325
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• 2010

Pressure vacuum measurement technique using acoustic impedance change of ultrasonic transducers was studied. The sensor has been setup using two air-coupled ultrasonic transducers, one as a transmitter and the other as a receiver, and put it into vacuum chamber and measured pressure versus ultrasonic amplitude. The result confirms that the standard deviations of four repeat measurements were from 0.0093 to 0.3325 at pressure 6.66 kPa to 202.65 kPa(about two atmosphere), and the relative percents were 0.018% and 0.164% at pressure 133.32 kPa and 202.65 kPa, respectively.

• Tuberculosis and Respiratory Diseases
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• v.63 no.6
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• pp.526-530
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• 2007

The incidence of acute respiratory distress syndrome (ARDS) has been estimated worldwide to range from 1.7 to 75 cases per 100,000. There are many treatments for ARDS, but only the low tidal volume strategy is based on strong clinical evidence from randomized clinical trials. The efficacy of extracorporeal life support (ECLS) in adults remains controversial. Ongoing clinical trials and research have shown a benefit for its use to salvage severe ARDS patients that are in failure with conventional treatment. We encountered a 41-year-old woman who developed ARDS induced by pneumococcal pneumonia. Despite conventional mechanical ventilation in the emergency room, severe hypoxia remained. We treated the patient immediately with ECLS. The patient has almost fully recovered, and was discharged from a 177-day stay at our hospital.

• The Transactions of the Korea Information Processing Society
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• v.1 no.4
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• pp.469-478
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• 1994

In this paper, a high speed, high resolution information processing digital- analog converter was designed for high definition color graphic, digital image signal processing, HDTV. For high speed operation, matrix type current cell array, latch which is not use pipelined, and two dimensional structure decoder using transmission gate were designed. It is adopted to fast-conversion, low-power implementation and exhibited high performance at linearity and accuracy. To reduce silicon area and to maintain resolution, current cell array composed of weighted and non-weighted current cells. In this paper, deglitching current cell design for high accuracy, new switching algorithm assert to reduce switching error. It's This circuit dissipates 130W with a 5-V power supply, and operate above 100MHz with 10 bit resolution.

• Journal of the Korean association of regional geographers
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• v.15 no.5
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• pp.655-670
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• 2009

This paper reviews geographical researches on developing countries and suggests relevant future topics. The German language region is especially chosen, because it has a lot of outcomes in the field of geographical researches on developing countries. This paper first reviews the history of geographical researches on developing countries, next analyze various trends of development strategies of developing countries and paradigms of development theories, and finally tries to describe research approaches, significant meanings of the research, and essential topics on the research. The aim of this paper is to verify the geography of developing countries as a practical academic field and to remind the importance of the geography of developing countries, which could contribute to social development and succeed the tradition of regional studies as globalization and international cooperation has continuously intensified.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.40 no.6
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• pp.485-491
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• 2012

The wall interference effects around the wind-turbine airfoil are experimentally investigated at low Reynolds numbers in a closed test-section wind tunnel. The test is performed at free-stream velocities from 10 to 31 m/s, which correspond to Reynolds numbers ranging from $1.5{\times}10^5$ to $4.6{\times}10^5$ based on chord of the airfoil. The blockage-area ratios, which is the ratio of the chord to the test-section width, are 27.8%, 38.5%, 41.7%, 45.5%, and 55.6%. The test results for the airfoil show that the transition point on the airfoil surface tends to move backward due to wall interference. The wall pressures for an adequate interference correction by a measured-boundary-condition method are desirable more than three times region of the chord before and after around the reference center.

• Journal of the Korea Convergence Society
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• v.13 no.2
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• pp.85-91
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• 2022

As emphasized in the COVID-19 quarantine guidelines, hand washing is the most important prevention rule in tandem with distancing and mask. This study aimed to confirm relevant factors that affect practice of hand washing to find out approach for improvement of hand washing practice rate after COVID-19. Using the 2020 Community Health Survey data. As methods of research, this study searched for relevance by carrying out univariate logistic regression analysis, and also conducted multivariate logistic regression analysis using significant variables. Analysis results show that hand washing practice rate was high in females, well-educated, low age, cities, office job, the more people wear a face mask indoors, the higher the cycle of ventilation, the higher the cycle of disinfection and the more people maintain healthy distance. This study understood factors related to the rate of hand washing practice and results can be used as basic data for COVID-19 quarantine guidelines.