• Korean Journal of Psychosomatic Medicine
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• v.13 no.2
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• pp.75-84
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• 2005

Objectives : This study was conducted to look over the current status of psychiatric consultation in a general hospital. Methods : We analyzed 664 medical records : 317 in 2002 and 347 in 1997, and compared the records of 1997 and 2002. Results 1) The average age of the patients increased from 45.9 years(1997) to 53.2 years of age (2002). Dividing the referred patients into 3 age-brackets as below 40, between 40 and 60, and above 60, the number of patients in the age group above 60 was significantly increased, more prominently in women. 2) Overall consultation rate was 2.29% in 2002 and 2.2% in 1997 .44.2% and 57.1% of the whole referrals were from the department of internal medicine in each year, and the department of rehabilitation medicine was leading in consultation rate in both years. 3) 'Mood disorders' and 'Substance related disorders' were the most frequent diagnoses in 2002 and 1997 respectively. 4) Use of psychotropic drugs was the most frequent recommendations of psychiatric consultation, in both years, and the most frequently prescribed drugs were anti-anxiety drugs in both years. The use of SSRI and atypical anti-psychotics were increased, while the use of typical anti-psychotics was decreased significantly in 2002. Conclusion : In 2002, compared with 1997, the average age of the patients was increased, and the consultation of the patients with the diagnosis of 'mood disorders' and 'cognitive disorders' was done more frequently than in 1997. The recommendation to use psychotropic drugs was well accepted, but the concern to diagnostic procedure was relatively low.

• Proceedings of the Korea Water Resources Association Conference
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• 2005.05b
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• pp.454-458
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• 2005

여름철 집중강우시 유입되는 고탁수층은 저수지의 밀도성층으로 인하여 표수층 하부에 위치하며, 이를 적기에 배제하지 않을 경우에는 수평방향의 확산현상과 연직방향의 전도현상으로 인해 저수지 전역에 분포하게 되어, 탁수현상의 장기화를 유발한다. 일본 사메우라댐의 경우에는 1977년 9월 태풍 17호에 의한 집중호우로 대량의 고탁수가 유입되어 하류하천으로의 댐 방류수의 고탁도현상이 장기간 지속된 바 있다. 이와 같은 탁수장기화에 대한 저수지내 대책의 하나로서 홍수유입후 탁도가 높은 물을 단기간동안 방류하고, 갈수기에는 탁도가 낮은 물을 방류하는 선택취수 개념이 제안된 바 있다. 국내의 임하댐의 경우에도 2002년 태풍 '루사'와 2003년 태풍 '매미'로 인해 발생한 탁수가 전도현상을 거치며 저수지내 전수층에 확산됨으로써 댐방류수의 고탁도현상이 장기화된바 있다. 이로 인하여 댐하류에 위치한 안동시 용상정수장의 동절기 정수처리 장애로 2003년 11월이후 약 160여일동안 댐방류가 중단된 바 있다. 임하댐의 경우에도 탁수장기화에 대한 대책으로서 홍수기 고탁수층을 우선배제한 후, 저수지내에 유입되는 청수을 담수함으로써 이를 방지할 수 있다. 이러한 선택취수 기법은 동일한 수리동역학적 개념을 적용하여 하류하천의 냉해문제를 대비하기 위한 방법으로 표층의 온수를 선택방류하는 데에도 이용될 수 있다. 이와 같은 선택취수를 효율적으로 수행하기 위해서는 취수시설에 접근하는 밀도흐름을 정확하게 이해하고 있어야 한다. 또한 취수탑 인근에서의 온도 및 탁도 등의 연직분포를 실시간으로 파악할 수 있는 자동수질측정시스템이 구축되어 있어야 한다. 현재 임하댐의 경우, 하류하천의 수질을 고려한 효율적인 탁수배제를 위하여 상류 유입부 2개소, 발전취수탑 전면 1개소, 조정지댐 1개소 등 총 4개의 자동수질측정시스템이 설치되어 탁도와 온도가 실시간으로 모니터링되고 있으며, 향후 강우시 저수지에서의 밀도흐름을 보다 정밀하게 모니터링하기 위하여 저수지내 4개의 주요지점에 추가적으로 설치될 예정이다. 이와 같은 자동측정시스템과 더불어 주기적인 세부 수질조사를 실시하면 저수지내의 온도성층 변화와 탁수층 분포를 매우 정확하게 파악할 수 있으며, 호소의 수질모형과 연계하여 강우시 탁수 도달시간과 탁수량을 사전에 예측할 수도 있다. 또한 이와 같은 기초적인 정보를 바탕으로 하류하천의 탁수 피해를 최소화할 수 있는 선택취수탑의 운영방안을 수립할 수 있다 본 연구에서는 이를 위해 선택취수탑 주위의 성층흐름을 기존의 실험자료와 수치해석을 통하여 분석하였고, 온도성층구조나 취수구의 위치변화에 따른 방류수 수질특성을 조사하였다.

• Journal of Life Science
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• v.33 no.7
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• pp.574-585
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• 2023

Sarcopenia is a leading cause of increased medical and nursing care costs among the elderly. In Korea, preventive measures for sarcopenia are mostly targeted toward the general elderly population without specific diseases. However, it is also necessary to implement measures for elderly individuals living in nursing homes and hospitals, where the prevalence of sarcopenia is high. Currently, computed tomography and/or magnetic resonance imaging are considered standard diagnostic tools. However, their complexity and time-consuming nature make them unsuitable for clinical use. The exact pathophysiological mechanisms of sarcopenia are unclear, as they involve various molecular biological pathways, including decreased exercise, protein and nutrient intake, changes in testosterone and growth hormone, and inflammation. Sarcopenia symptoms can lead to several diseases, such as osteoporosis, fractures, dementia, diabetes, and cardiovascular disease. Vitamin B deficiency is a significant factor in sarcopenia induction, with B vitamins being directly involved in energy and protein metabolism and nerve function. Vitamin B deficiency can lead to neuromuscular and neurogenic disorders, which often overlap with sarcopenia. Suboptimal intake of B vitamins, malabsorption, and anorexia are common among the elderly. This study aims to provide information on the role of water-soluble B vitamins in preventing and controlling muscle mass loss and deterioration among the elderly with sarcopenia. In addition, we discuss the potential of myokines from the B vitamin family in modulating sarcopenia.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.191-193
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• 2012

the existing developed route guidance services for the visually impaired aids for using RFID tags attached to the cane, the extent to which the cover blocks and RF communication was a simple walking guide service. It has a detection range of RFID readers in short, clear obstacles to location, size and shape can not be determined. And the risk of escape routes in case of questions or directions Measures are urgently needed. Today, due to the Smart Device Development convenience to users and offers many benefits. And the Android platform, Client and Server (PC) between the socket stream, using real-time video and voice information, location information by sending a dangerous situation for the visually impaired to take immediate action on the system and 1: N is to implement the service.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.1
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• pp.27-32
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• 2015

In this paper, a mushroom typed electromagnetic band gap (EBG) structure to be inserted in the printed circuit board (PCB) inner layer in order to stabilize the PCB power line is proposed for global-navigation satellite service (GNSS). In designing the proposed EBG structure, the target stop-bandwidth was designed from 1.55GHz to 1.81GHz including GNSS and mobile communication-related frequency bandwidth. In this bandwidth, the insertion loss(S21) was observed below about -40dB. From the simulation results, it is expected that the stabilization of power delivery network (PDN) structure in the PCB circuit design should be improved and the effective correspondence to EMI will be helpful.

• Archives of design research
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• v.16 no.4
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• pp.91-100
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• 2003

The population is aging rapidly in Korea. From that point of view, 'aging' becomes our reality, and the progression of aging brings about far-reaching changes throughout the whole country. The developed countries are making vigorous preparations for aging now, but our country has not been doing well. So it is necessary to research the counter plan for aging. As an aged society is coming dose at hand, we need the urgent overall countermeasures to decrease the difficulties and troubles the elderly are suffering in their daily lives. This thesis studied the documents and literatures on the fundamental direction of design in preparation for an aged society. The fundamental direction of design needs the conversion to the view that will enable society to cope with the problems of aging. One of solutions for them is Universal Design. Universal Design should be embodied with synthetic and diversified approaches and strategies. 1 expect the healthy aged society with Universal Design mind to build the society where everyone can live together.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.17 no.6
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• pp.130-137
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• 2003

Because of falling-off in power quality by harmonics, obstacles like lowering of capability, noise, vibration of power facilities and so on are occurred. Also generation of harmonics is inevitable and the point at harmonics is seriously gathering strength because energy saving installation using semiconductor circuit as countermeasures to enhance energy efficiency will be broadly spread and the use of energy conversion equipment like motor speed control contrivance, energy keeping installation and so on will increase, in the future. In order to eliminate harmonics obstacle, precision measurement and analysis on voltage, current, power factor, the each ingredient of harmonic order, the percentage of total harmonic distortion, and so forth are needed. In this paper, we developed low-cost measurement system to measure and analyze power quality connected with harmonics and verified it's performance by measuring and analyzing power quality in the three-phase and four-wire system.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.20 no.1
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• pp.41-47
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• 2006

This paper presents harmonic evaluation of an IAT(Intra Airport Transit) system in Incheon International Airport. It will be used for electric vehicles with 80[kW] per car produced by Mitsubishi Heavy Industries Ltd, and which is constructed with SIV(Static Inverter), VVVF controller and two induction motor. The vehicles operated in the IAT system can be treated as rapidly changing DC loat and at a feeding substation, 3-phase electric power is transferred to DC 750[V] by rectifier. Since vehicles are changing continuously, the voltages for the load fluctuate in the IAT system, and moreover, the voltage fluctuation generates high-order harmonics. It results the difficulty in maintaining power quality in KEPCO systems' side. The power quality of the IAT system in Incheon International Airport is evaluated using PSCAD/EMTDC simulator in the paper. The THD(Total Harmonic Distortion) of voltages and TDD(Total Demand Distortion) of currents, indices are calculated for the IAT system using the results of PSCAD/EMTDC dynamic simulation.

• Journal of the Korean Society for information Management
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• v.30 no.1
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• pp.193-219
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• 2013

Public institutions or libraries urgently prepare comprehensive measures to improve web accessibility of their websites as booting web dependability and web utilization of disabled people. The purpose of this study is to propose the design guidelines for improving web accessibility of disabled people. The study, first, analyzed various web accessibility requirements based on web standards, web accessibility guidelines, and the related researches and proposed a web accessibility checklist with 42 requirement. Next, the study evaluated 15 websites of public institutions such as government departments, association of disabled people, and public libraries using the checklist. Finally, the study revealed non-adherence requirements and suggested website design guidelines in terms of contents configuration, sound, colour, keyboard handling, mouse handling, access, image processing, text processing, and code processing.

• The Korean Journal of Pesticide Science
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• v.4 no.4
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• pp.1-11
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• 2000

Since the chemical pesticides have been played a major role in crop protection practices during last 5 to 7 decades, social concerns on the pesticide residues in and on food commodities as well as environmental compartments have also growing with endless demands and interests. Most national regulation authorities over the world have paid a special attention on the data requirements for pesticide registration. In addition, even the registered pesticides also should follow the re-registration process, which meets today's guidelines and regulatory triggers and safety profiles. More recently, a defined interest in the international bodies has given to the global conservation program from the environmental contamination; these involves persistent organic pollutants (POPs), endocrine disrupting chemicals (EDs), biocides, etc.. In order to secure the food safety and keep our circumference sound, in-depth efforts getting information from global networks have perpetually to be given under relevant national agencies. At the same time, a nation-wide survey of the residues has also to be in operation to monitor the tendency of the toxicant in/on foods, feeds, and environmental segments. In final, the scientifically assessed results on safety should be opened to the public to provide the right-to-know for the consumers.