• 한국GIS학회:학술대회논문집
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• 한국GIS학회 2003년도 공동 춘계학술대회 논문집
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• pp.71-76
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• 2003

The purpose of this study is the development, application and assessment of probability and artificial neural network methods for assessing landslide susceptibility in a chosen study area. As the basic analysis tool, a Geographic Information System (GIS) was used for spatial data management. A probability method was used for calculating the rating of the relative importance of each factor class to landslide occurrence, For calculating the weight of the relative importance of each factor to landslide occurrence, an artificial neural network method was developed. Using these methods, the landslide susceptibility index was calculated using the rating and weight, and a landslide susceptibility map was produced using the index. The results of the landslide susceptibility analysis, with and without weights, were confirmed from comparison with the landslide location data. The comparison result with weighting was better than the results without weighting. The calculated weight and rating can be used to landslide susceptibility mapping.

• Bulletin of the Korean Chemical Society
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• 제32권7호
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• pp.2274-2278
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• 2011

Verapamil is a calcium channel blocker and is classified as a class IV anti-arrhythmic agent. It is used in the control of supra ventricular tachyarrhythmias, and in the management of classical and variant angina pectoris. It is also used in the treatment of hypertension and used as an important therapeutic agent for angina pectoris, ischemic heart disease, hypertension and hypertrophic cardiomyopathy. Verapamil commonly co-administered with NSAIDs (non-steroidal anti-inflammatory drugs) i.e. diclofenac sodium, flurbiprofen, Ibuprofen, mefanamic acid and meloxicam. A simple and rapid RP-HPLC method for simultaneous determination and quantification of verapamil and NSAIDs was developed and validated. The mobile phase constituted of acetonitrile: water (55:45) whose pH was adjusted at 2.7 and pumped at a flow rate of 2.0 mL $min^{-1}$ at 230 nm. The proposed method is simple, precise, accurate, low cost and least time consuming for the simultaneous determination of verapamil and NSAIDs which can be effectively applied for the analysis of human serum.

• 수산해양교육연구
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• 제17권3호
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• pp.305-323
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• 2005

To reveal secondary teachers' in-service education needs, in-depth interviews were conducted with 15 individual teachers based on semi-structured questions and qualitative data analysis procedures were adopted. They wanted to have; a. more knowledge of one's subject, subject related information, culture and common sense, counseling psychology, foreign language, and the 7th curriculum, b. better skills of student-centered teaching-learning methods, guidance and class management, good use of computers, and educational evaluation, c. improved attitudes regarding democratic problem solution processes, conversation with and service to students from their viewpoints, commitment to preparations for teaching, educational innovation and improvement, elimination of improperness, and pride of teaching job.

• 수산해양교육연구
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• 제16권2호
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• pp.163-170
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• 2004

The rapid exchanges of mobile computing environment and development of wireless communication are providing many effects for learning activity of students. Recently, PDA system developers which are studying memory capacity, communication speed and size of screen support techniques to be capable of learning from students in the wireless or moving environment. In this viewpoints, this paper has a purpose to design multimedia learning system to be able to do with sound lecture contents. The implemented system largely consists of two parts which have the teacher module and students module. The one manages learning progress of students, class management, bulletin board and etc. The other is capable of using studying and bulletin functions. The main idea of this research is focus to upgrade the effect of learning without almost treating the existing studies, which can be listening sound lecture and also seeing text and image at the same time.

• Management Science and Financial Engineering
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• 제2권1호
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• pp.123-145
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• 1996

We consider a priority-based multiclass queue with probabilistic feed-back. There are J service stations. Each customer belongs to one of the several priority classes, and the customers of each class arrive at each station in a Poisson process. A single server serves queued customers on a priority basis with a nonpreemptive scheduling discipline. The customers who complete their services feed back to the system instantaneously and join one of the queues of the stations or depart from the system according to a given probability. In this paper, we propose a new method to simplify the analysis of these queueing systems. By the analysis of busy periods and regenerative processes, we clarify the underlying system structure, and systematically obtain the mean for the sojourn time, i.e., the time from the arrival to the departure from the system, of a customer at every station. The mean for the number of customers queued in each station at an arbitrary time is also obtained simultaneously.

• Genomics & Informatics
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• 제20권4호
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• pp.47.1-47.13
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• 2022

Klebsiella pneumoniae is a gram-negative bacterium that is known for causing infection in nosocomial settings. As reported by the World Health Organization, carbapenem-resistant Enterobacteriaceae, a category that includes K. pneumoniae, are classified as an urgent threat, and the greatest concern is that these bacterial pathogens may acquire genetic traits that make them resistant towards antibiotics. The last class of antibiotics, carbapenems, are not able to combat these bacterial pathogens, allowing them to clonally expand antibiotic-resistant strains. Most antibiotics target essential pathways of bacterial cells; however, these targets are no longer susceptible to antibiotics. Hence, in our study, we focused on a hypothetical protein in K. pneumoniae that contains a DNA methylation protein domain, suggesting a new potential site as a drug target. DNA methylation regulates the attenuation of bacterial virulence. We integrated computational-aided drug design by using a bioinformatics approach to perform subtractive genomics, virtual screening, and fingerprint similarity search. We identified a new potential drug, koenimbine, which could be a novel antibiotic.

• 농업과학연구
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• 제30권2호
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• pp.139-147
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• 2003

The main purpose of this study is to obtain forest scenic beauty management informations toward forest working systems in pinus densiflora forest stands, etc. To get these information, visual preference and spatial image analysis methods are used. 25 different alternatives were simulated to visualize on basis of actual forest working methods with taken photos from May to July, 2003. The options were illustrated as photos produced by computer software. Respondents' ratings for 25 landscape scenes were obtained by interview survey method. Each alternatives were evaluated by forest major student group with total 103 respondents after reliability test. Visual preference evaluation was used 10 point rating scale. Spatial images of 12 alternatives were measured by 12 semantic differential scale. In general, the respondents preferred refreshing and ordering forest stand after forest working to natural forest stand before forest working. High visual preference for forest density produces 400-600 trees/ha in small diameter class forest stands. Regarding visual preference according to pavement type of trail, soil trail is ranked high. Visual preference for cutting area ranks mature forest stand and visual preference for trail slope cover type ranks shrub with grass as relatively high on the preference scale. Through the factor analysis, spatial images of 12 coniferous forest stands are classified as 'ordered opened' and 'beautiful healthy'. Results indicate how to conduct forest working systems for forest scenic beauty management.

• 한국토양비료학회지
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• 제14권4호
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• pp.174-178
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• 1982

답토양(畓土壤)의 형태적특성(形態的特性), 유형(類型) 및 적성등급(適性等級)과 수량(收量)과의 관계(關係)를 구명(究明)하기 위(爲)해 무비구(無肥區)에서 4개년(個年)('76-'79)간(間) 실시(實施)한 결과(結果)는 다음과 같다. 1. 토양특성(土壤特性)과 수량(收量)과의 관계(關係)는 배수조건(排水條件)은 약간(若干) 불량(不良)한 토양(土壤)이 508kg/10a, 토성(土性)은 식양질(埴壤質)인 토양(土壤)이 538kg/10a, 유효토심(有效土深)은 100cm이상(以上)인 토양(土壤)이 513kg/10a 으로 각각(各各) 가장 높게 나타났다. 2. 유형(類型) 수량(收量)과의 관계(關係)는 보통답(普通畓) 525, 미숙답(未熟畓) 492, 사질답(砂質畓) 484, 습답(濕畓) 474, 염해답 263kg/10a으로 나타났다. 3. 적성등급(適性等級)과 수량(收量)과의 관계(關係)는 1급지(級地) 532kg, 2급지(級地) 510, 3급지(級地) 464, 4급지(級地) 349kg/10a으로 나타났음.

• 가정과삶의질연구
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• 제30권6호
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• pp.23-37
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• 2012

Using data from the 2008 Korean Longitudinal Survey of Women and Families, this study investigated the income class differences in the modes, amount of time, and expenses for caring and educating a child in early childhood. The sample consisted of 1,849 households with a child aged 6 years or less. The major findings were as follows. First, the lower-income class was more likely to rely on child care centers and less likely to use services provided by kindergarten or private education. Their total amount of time required to provide care and education for their child was about 4 or 5 hours less than that of the other income classes; this result was due to the fact that they consumed less hours for home care, kindergarten, and private education. Second, we found there were more similarities than differences between middle-income and upper-income classes in the modes, amount of time, and expenses to care for and educate their young children; however, the middle-income class used less private education than the upper-income classes in terms of usage rate and length of time. Lastly, the other variables which were significantly related with the amount of time and expenses for child care and education included mother's employment, age of the child, and having siblings, and the family size. Based on the results, implications for public policy on early childhood care and education were suggested.

• 대한가정학회지
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• 제42권2호
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• pp.47-68
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• 2004

Human Ecology researches studying human life patterns in Korea are on the same tracts of recent global promotion in Korea as that of other academic studies. In this changing academic atmosphere, Human Ecology-based researches are in demands of suitable research topics and methods. This study was done to investigate the present research situations of Human Ecology-based subdivisional fields, including food and nutrition, clothing and textiles, child studies, family studies, home management, housing studies, consumer sciences and home economics education, by an increasing need in the society of KHEA (Korean Home Economics Association). The study focused on understanding the trends of research topics and methods shown in the papers published in major academic periodicals in Korea as well as world-class (SCI, SSCI) journals in order to predict the future for Ecology-based studies in Korea. The data were collected from all periodicals from January, 2000 to August, 2003, listed in the Korean Research Foundation and from world-class journals comparable to the former. Twenty-six periodicals were chosen for analysis, including papers with authors of ecology-based, field faculty at colleges or universities. There were some differences between the Korean and world-class research topics and methods. In order to narrow the gap between the two, we suggested that serious consideration be given to the research's application-ability toward human beings, which would be the home-ecology study's identity. The same criteria in these fields as used in other natural science fields are not suitable for supporting and evaluating research proposals and outputs, and recent global academic promotions may not be desirable in some respects. However, they do present an opportunity to expose Korean researcher's to world-class scientific societies and upgrade their studies. These efforts should stimulate the field of Human-Ecology studies and enhance the recognitions of these fields among future students.