• 정보관리연구
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• 제33권3호
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• pp.105-119
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• 2002

1990년대 후반부터 대두된 모바일 인터넷 기술은 언제, 어디서나 정보에 대한 접근을 보장해 주므로 다양한 영역에서 모바일을 활용하여 업무의 효율성을 높이고 있다. 본고에서는 모바일 콘텐츠 서비스 동향을 살펴본 후 국내외 도서관에서의 모바일을 활용한 정보서비스 사례를 고찰하였다. 도서관 정보서비스 분야에서는 모바일의 인터넷 기능을 이용하여 소장자료 검색과 반납, 대출조회 기능을 제공하고 있으며, 단문메시지 서비스(SMS)를 이용하여 각종 통보 서비스를 제공하고 있다. 모바일 사용인구의 증가 및 기술의 발달에 따라서 향후에는 좀 더 다양한 모바일 정보서비스가 제공되어야 할 것이다.

• 한국식품영양과학회지
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• 제43권12호
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• pp.1913-1919
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• 2014

이동식 자동절임장비에서 염농도 29.6%의 염수로 $30^{\circ}C$에서 4시간 절인 배추로 담근 고염도 김치의 품질은 김치공장에서 12% 염수로 $10^{\circ}C$에서 16시간 절인 배추로 담근 저염도김치의 품질보다 전체적인 맛과 짠맛에서 더 높았고 다른 요소들은 유의적인 차이가 없었다. 특히 전체적인 맛과 짠맛에 대한 기호도는 5% 유의수준에서 차이가 있었다(P<0.05). 즉 고농도 염수로 고온에서 단시간 절인 배추의 품질이 저농도에서 저온으로 장시간 절인 배추의 품질보다 우수하였다. 이러한 결과는 김치공장의 생산성 향상을 위해 배추의 절임공정을 개선하는 데 방향을 제시하는 것이고, 이동식 배추절임 자동화장비를 실용화하는 데 근거가 될 것이다.

• 한국물환경학회지
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• 제39권1호
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• pp.46-60
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• 2023

Climate change causes fluctuations in water quality in the aquatic environment, which can cause changes in water circulation patterns and severe adverse effects on aquatic ecosystems in the future. Therefore, research is needed to predict and respond to water quality changes caused by climate change in advance. In this study, we tried to predict the dissolved oxygen (DO), chlorophyll-a, and turbidity of the Paldang reservoir for about two weeks using long short-term memory (LSTM) and gated recurrent units (GRU), which are deep learning algorithms based on recurrent neural networks. The model was built based on real-time water quality data and meteorological data. The observation period was set from July to September in the summer of 2021 (Period 1) and from March to May in the spring of 2022 (Period 2). We tried to select an algorithm with optimal predictive power for each water quality parameter. In addition, to improve the predictive power of the model, an important variable extraction technique using random forest was used to select only the important variables as input variables. In both Periods 1 and 2, the predictive power after extracting important variables was further improved. Except for DO in Period 2, GRU was selected as the best model in all water quality parameters. This methodology can be useful for preventive water quality management by identifying the variability of water quality in advance and predicting water quality in a short period.

• 가정과삶의질연구
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• 제19권1호
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• pp.111-129
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• 2001

This study was performed to develope a money management education program for elementary school students graded from 3 to 6 in order to enhance their money management skill. Based on the developmental stages of the children, this program covered five financial issues such as value of money, financial planning, allowance planning, saving and investment, and consuming and purchasing. Total 15 specific education programs were developed. The contents included in each program were value of money & economic circulation, types of money and the importance of money management, the issues related on choice and resource use, long-term and short-term planning, the relationship between occupation and earnings, career planning, budgeting, the reasons and types of saving, understanding of interest, investment methods, the functions of market and trade, intra family income distribution, consumptions, and consumer decision making process.

• Journal of Magnetics
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• 제19권1호
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• pp.32-36
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• 2014

The purpose of this study was to investigate the effect of pulsed magnetic field (PMF) and low frequency low level laser (LFLLL) stimuli on acupoint LI4 (Hegu) using photoplethysmography (PPG). Our PMF system was designed to generate maximum intensity of 0.20 T at a transition time of 0.16 ms, with pulse intervals of 1 Hz. The diode laser with wavelength of 650 nm and power of 5 mW was also employed. It was observed the change of the pulsating blood volume through measuring PPG signals from both hands. These results imply that stimulating acupoint LI4 with PMF and LFLLL improves the circulation of peripheral vascular system. In particular, PMF stimulation brings a big improvement of the blood flow even with short term stimulation of 3-4 minutes compared to LFLLL stimulus.

• Journal of Korean Neurosurgical Society
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• 제63권1호
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• pp.4-13
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• 2020

For surgical minimalism to reduce iatrogenic traumatization, a supraorbital keyhole approach has already been successfully applied to treat many unruptured anterior circulation aneurysms. However, using this minimal approach also raises several technical concerns due to the small cranial opening and cosmetic impact of a facial incision. Yet, such technical limitations can be overcome by using favorable surgical indications, slender surgical instruments, and optimized surgical techniques, while excellent cosmetic outcomes can be achieved using a short skin incision located <1 cm from the supraorbital margin, reconstruction of any bone defects around the bone flap, and meticulous wound closure. Thus, given such reassuring surgical results, in terms of the clipping status, neurological effects, and cosmetic outcomes, any concerns can be transitioned into confidence.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2009년도 학술발표회 초록집
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• pp.1142-1146
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• 2009

A rainfall simulation and forecasting technique that can generate daily rainfall sequences conditional on multi-model ensemble GCMs is developed and applied to data in Korea for the major rainy season. The GCM forecasts are provided by APEC climate center. A Weather State Based Downscaling Model (WSDM) is used to map teleconnections from ocean-atmosphere data or key state variables from numerical integrations of Ocean-Atmosphere General Circulation Models to simulate daily sequences at multiple rain gauges. The method presented is general and is applied to the wet season which is JJA(June-July-August) data in Korea. The sequences of weather states identified by the EM algorithm are shown to correspond to dominant synoptic-scale features of rainfall generating mechanisms. Application of the methodology to seasonal rainfall forecasts using empirical teleconnections and GCM derived climate forecast are discussed.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.1236-1239
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• 2004

The object of this study is to develop a model of the cardiovascular system capable of simulating the short-term transient and steady-state hemodynamic responses such as hypotention and disequilibrium syndrome during hemodialysis or hemofiltration. The model consists of a closed loop 12 lumped-parameter representation of the cardiovascular circulation connected to set-point models of the arterial and cardiopulmonary baroreflexes and 3 compartmental body fluid and solute kinetic model. The hemodialysis model includes the dynamics of sodium, urea, and potassium in the intracellular and extracellular pools, fluid balance equations for the intracellular, interstitial, and plasma volumes. We have presented the results of many different simulations performed by changing a few model parameters with respect to their basal values.

• Ocean and Polar Research
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• 제28권2호
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• pp.209-214
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• 2006

The East Sea Branch (ESB) of KORDI will be launched in 2008. She will take a role of monitoring the sea surface topography and temperature by satellites, short- and long-term sea levels by tide gauges, coastal currents and open-sea circulation by setting up coastal radars and mooring current-meters and acoustic equipments, as well as monitoring nearshore processes, coastal erosion and water pollution. A basic program of coastal zone management will help ocean-policy makers to set up right decisions based upon scientific background of the regional data in the East Sea. Networking among the neighboring countries around the sea will supply more useful information not only for experts but also for ordinary vacationers or fishermen. In order for this program to be successfully settled down during the next decade, it is necessary for a leader to have the right vision to attract more experts from global brain pools and to manage the ESB as a leading-edge observatory in the world. Details about this leading-edge operational program are introduced in the text.

• 약학회지
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• 제44권3호
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• pp.251-256
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• 2000

Sterically stabilized liposomes (SSL) composed of distearoylphosphatidylcholine, cholesterol, dicetylphosphate and distearoylphosphatiodylethanolamine-N-poly(ethyleneglycol) 2000 (DSPE-PEG 2000) were made by reverse phase evaporation method to prolong biological half-life and decrease toxic side effect of drug. Streptozocin (572), a water-soluble antitumor agent with short half-life, was selected as a model drug. The size of SSL was controlled by polycarbonate extrusion to 100 nm which is adequate size for long circulation in plasma. The release rate of drugs from SSL in PBS was evaluated. And the stability of STZ-containing liposomes against drug leakage into rat plasma was evaluated in order to investigate the interaction of liposome and plasma protein. Incorporation of DSPE-PEG 2000 into conventional liposomes significantly decreased the drug leakage into rat plasma.