• 한국전자거래학회지
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• 제22권3호
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• pp.75-85
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• 2017

전자 상거래 산업에서 많이 사용되고 있는 개인화 추천은 많은 분야에서 효과를 입증하고 있다. 개인화 추천을 위해서는 개인 정보를 포함하여 아이템을 재 분류해야하는 추가 작업이 필요하다. 본 연구에서는 개인 정보를 사용하지 않고 아이템을 재분류 하지 않는 추천 기법에 대해 제안한다. 음악 추천 영역으로 제한하여 실험하였으며, 실제 청취 이력 데이터를 사용하였다. 실험 분석을 통해 적은 데이터로도 유의미한 추천을 이끌어 낼 가능성을 살피고, 상황별 추천을 위한 아이템 수 분석과 추가 기법을 제안한다.

• 보건교육건강증진학회지
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• 제34권1호
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• pp.77-90
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• 2017

Objectives: The purpose of this study was to explore how university students perceive the mental health, what are the factors affecting the mental health in their lives. Methods: The participants of this study were eight university students who haven't participated in a class of mental health, residing in G city. This study collected the data between May 9 and June 13, 2016, and adopted a photovoice methodology of participatory action research. Results: The mental health perceived by the participants was expressed as new things re-experiencing in a familiar daily life of themselves, and things seem the same but different from others. Through discussion, the participants found that affecting factors of the mental health they negatively perceived could work on others as positive factors. Also, the participants were in search of a strategy to individually protect the mental health barriers in ways of that could contribute to mental health of the community such as conformity to social regulations. Conclusions: Based on these results, this study was meaningful in that various views were derived to prepare strategies and policy alternatives to promote university students' mental health.

• Physical Therapy Rehabilitation Science
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• 제6권4호
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• pp.202-207
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• 2017

Objective: The self-decisions of the client regarding the meaningful work as a therapeutic approach of client-orientation. The Cognitive Orientation to daily Occupational Performance (CO-OP) is an occupation-oriented problem-solving approach. The purpose of this study was to describe the goals and intervention protocols of CO-OP in those affected by stroke. Design: A systematic review. Methods: Using EBSCOhost, PubMed, and ProQuest databases, we searched studies published in the past decade that utilized the CO-OP intervention. An initial search revealed 71,171 potential articles. After applying our search criteria to screen the titles, abstracts, and full-text, we included 7 articles that met our inclusion and exclusion criteria. In this study, we used the patient, intervention(s), comparison, outcome method to analyze the 7 selected studies. We analyzed the frequency of goals and intervention protocols. Results: Seven articles met our selection criteria; these studies included participants with an almost normal cognitive function from inpatient and outpatient rehabilitation facilities. CO-OP was used for 237 goals; the most used goal was the instrumental activities of daily living. The training procedure used 3 types of self-selecting goals in the activities. One of the goals was not trained, but was only evaluated to determine the generation effect. The most common outcome measurements included the Canadian Occupational Performance Measure and the Performance Quality Rating Scale. Conclusions: This research provided information about the effectiveness of CO-OP and selecting the correct evaluation tool to assess the efficiency of the intervention. This study suggests that treatment with CO-OP in occupational therapy is effective and that it outlines common protocols.

• 대한조선학회논문집
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• 제51권6호
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• pp.510-520
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• 2014

Unlike other mass production in small variety, shipbuilding process is a project-based method in single variety, which causes unpredictable volatility in the planning system. In shipyards, series of manufacturing processes from fabrication to erection is sequentially carried out. In order to predict unfavorable changes such as overload or low load of working volume, computerized simulation has been being gradually adopted. The data used in the simulation are processed from the database of the main scheduling and planning system. Thus the quality of those data is very crucial for the meaningful results. Unfortunately, research on the verification of data quality is very rare and hardly known to the authors. In this work, using the database of scheduling and product information system of a large domestic shipyard, the data required for the simulation are qualitatively analyzed and verified.

• 대한기계학회논문집A
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• 제31권12호
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• pp.1144-1149
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• 2007

Experimental studies on the fabrication of sub-30 nm nanofibers using weakly two-photon induced photopolymerized region have been carried out. For the generation of nanofibers inside or outside microstructures, an over-polymerizing method involving a long exposure technique (LET) was proposed. Such nanofibers can find meaningful applications as bio-filters, mixers, and many other uses in diverse research field. A multitude of nanofibers with a notably high resolution (about 22 nm) in two-photon polymerization was achieved using the LET. Furthermore, it was demonstrated that the LET can be employed for the direct fabrication of various embossing patterns by controlling the exposure duration and the interval between yokels. Thin interconnecting networks are formed regularly in the boundary of the over-polymerized region, which allows for the creation of various pattern shapes. Overall of this work, some patterns including nanofibers are fabricated by the LET.

• 한국전문물리치료학회지
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• 제12권2호
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• pp.20-27
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• 2005

Osteoporosis is characterized by low bone mass and the microarchitectural deterioration of bone tissue with a consequent increase in bone fragility and susceptibility to fracture. It has been suggested that speed of sound (SOS) and broadband ultrasound attenuation (BUA) of quantitative ultrasound sonography (QUS) may provide information about not only bone density but also the microarchitecture and elastic properties of bone. Physical inactivity reduced mechanical usage and it made process to the bone changes. This study aimed to association between the physical activity and the QUS parameters in 1305 (593 men, 712 women) aged 20 years over in a rural population. Two QUS parameters, BUA (p=.23) and SOS(p=.73) were measured at the right calcaneus of postmenopausal women, no significant associations were observed between sports index and SOS and BUA. These results suggest that work, non-sports leisure physical activity (p<.01) have a significant influence on QUS parameters in a rural population. Physical activity are meaningful predictor of QUS parameters of the calcaneus in a rural population.

• 한국생물정보학회:학술대회논문집
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• 한국생물정보시스템생물학회 2005년도 BIOINFO 2005
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• pp.161-164
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• 2005

Data mining techniques can be applied to identify patterns of interest in the gene expression data. One goal in mining gene expression data is to determine how the expression of any particular gene might affect the expression of other genes. To find relationships between different genes, association rules have been applied to gene expression data set [1]. A notable limitation of association rule mining method is that only the association in a single profile experiment can be detected. It cannot be used to find rules across different condition profiles or different time point profile experiments. However, with the appearance of time-series microarray data, it became possible to analyze the temporal relationship between genes. In this paper, we analyze the time-series microarray gene expression data to extract the sequential patterns which are similar to the association rules between genes among different time points in the yeast cell cycle. The sequential patterns found in our work can catch the associations between different genes which express or repress at diverse time points. We have applied sequential pattern mining method to time-series microarray gene expression data and discovered a number of sequential patterns from two groups of genes (test, control) and more sequential patterns have been discovered from test group (same CO term group) than from the control group (different GO term group). This result can be a support for the potential of sequential patterns which is capable of catching the biologically meaningful association between genes.

• 한국수학교육학회지시리즈A:수학교육
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• 제50권3호
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• pp.263-284
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• 2011

We took note of the fact that there were not many studies on improvement of mathematics learning in the field of statistics for the minority students from the families who belonged to the Low-SES. This study was to help them understand the concepts and principles of mathematics, motivate them for mathematics learning, and have them feel familiar with it. The subjects were 12 students from the low-SES families among the sophomores of 00 High School in Gyeonggi-do. Although it could not be achieved effectively in the short-term of learning for the slow learners, their understanding of basic concepts and confidence, interests and concerns in statistical learning were remarkably changed, compared to their work in the beginning period. Our discourse classes using various topics and examples were well perceived by the students whose performance was improved up to the 3rd thinking level of Mooney's framework. Also, a meaningful instructional model for slow learners(IMSL) was found through the discourse.

• 산업공학
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• 제23권3호
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• pp.221-228
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• 2010

With the development of science and technology, modern submarines are equipped with high technology devices and multi-functioned precise armaments, consequently, acquisition cost as well as maintenance cost of the submarines are getting higher and higher. However, tight defense budget forces navy to significantly reduce military operating and maintenance costs. In this study, the maintenance and operating costs of submarine Jangbogo-II are estimated through M&S (Modeling and simulation) methodologies in order to reasonably and consistently work out the requirement verification system of Jangbogo-II. The maintenance and operating costs of Jangbogo-II along the next 25 years are estimated as 312.65 billion won via engineering analysis methods while 312.69 billion won from PRICE Model, which shows only 0.04 billion won differences as a whole. This study is expected to be able to provide meaningful decision making data for not only short and/or mid term operating planning but military budgeting.

• 한국보건간호학회지
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• 제28권3호
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• pp.644-657
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• 2014

Purpose: The purpose of this study was to try to understand the essence of the experience early turnover of the new nurse by applying the phenomenological method and to provide basic data for a community-based management program. Method: Phenomenological approach was used to identify subjects experience. Subjects were five new nurses, with less than one year of clinical experience in clinical practice. This study used in-depth interview. Results: there were 104 meaningful sentences or phrases, with 41 generally comprehensive thema. Finally, thema were classified into 12 thema clusters. Conclusion: Finally, based on the results, some suggestions regarding management of early turnover of new nurses are needed. First, we proposed a new characterized of hospital selection method for each hospital. Second, practical training in clinical practice in the school and the community is necessary in order to reduce the real impact of new nurses. New nurses require various support elements in order to mitigate the real shock the first time they encounter clinical practice. Third, addition of work-related training and promotion of a self-esteem program will be needed. Fourth, interview opportunities with seniors who adapted successfully in clinical should be provided for new nurses. In addition, continuous communication should be provided for new nurses.