• Journal of Internet Computing and Services
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• v.18 no.3
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• pp.19-28
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• 2017

Collaborative filtering (CF) is a system that interprets the relationship between a user and a product and recommends the product to a specific user. The CF model is advantageous in that it can recommend products to users with only rating data without any additional information such as contents. However, there are many cases where a user does not give a rating even after consuming the product as well as consuming only a small portion of the total product. This means that the number of ratings observed is very small and the user rating matrix is very sparse. The sparsity of this rating data poses a problem in raising CF performance. In this paper, we concentrate on raising the performance of latent factor model (especially SVD). We propose a new model that includes product similarity information and co occurrence information in SVD. The similarity and concurrence information obtained from the rating data increased the expressiveness of the latent space in terms of latent factors. Thus, Recall increased by 16% and Precision and NDCG increased by 8% and 7%, respectively. The proposed method of the paper will show better performance than the existing method when combined with other recommender systems in the future.

• Journal of Preventive Medicine and Public Health
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• v.31 no.3 s.62
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• pp.372-383
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• 1998

For the purpose to analysis the characteristics of traffic accidents(TA) and investigate the relationship between traffic accidents and children attention problem rating scale(CAP) and, family environment scale(FES), this questionnaire survey was conducted to the 16 primary school students in Taejon from July 14 to August 26, 1997. The number of study subjects who had an experience of traffic accidents from July 1, 1996 to June 30, 1997 were 195, and the number of control sujects were 512. The main results were as follows; 1. The traffic accident rates was 0.9% as a whole, but those were 1.4% in boys, 0.7% in girls, 1.3% in low (1st-3rd) grade, and 0.8% in high (4th-6th) grade. 2. The rates of traffic accidents were high in spring, friday, afternoon and a drive-way around home. TA occurred during walking with friends most frequently. 3. In CAP the score of inattention was lower in TA group than control group, and hyperactivity was higher in TA group but they didn't showed significantly different. In FES, cohesion score was higher in TA group than control group, but Conflict score and Expressiveness score were in control group, but they didn't showed significantly different. 4. In CAP the odds ratio of inattention score for TA group was 0.84, but that of hyperactivity score was 1.15. In FES, the odds ratio of cohesion score was 1.06, but that of expression score and conflict score was 0.94 and 0.96, respectively. In conclusion, the relationships between TA and CAP, TA and FES in this study were not clear to explain personal characteristics and environmental conditions.

• Journal of Korean Library and Information Science Society
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• v.49 no.1
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• pp.233-265
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• 2018

The aim of this study was to assess the social impact of the cultural programs of the children's libraries in Korea and further present the libraries'social value. To this end, we have conducted a survey on 511 elementary school students to assess the social impact of the children libraries'cultural programs. As a consequence, we have ascertained the children's expressiveness / creativity within their personal realms, self-esteem, pleasure / joy / happiness as well as their attitude towards cultural arts and changes in the cultural and artistic experiences further to growth in friendship as a matter of social interaction, generation and strengthening of local communities, sense of affiliation with local community / identify, and local community participation, among the manifestations of the social impact concerned. Based on this, children's libraries can be regarded as an important social capital of the community in the following aspects. Children's libraries enhance the quality of life and children's interaction skills. It also make them feel attached to the local community. Children's libraries maintain local communities, contribute to the creation and strengthening of local communities, and encourage participation in local activities.

• Journal of The Korean Association For Science Education
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• v.37 no.6
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• pp.1063-1073
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• 2017

This study analyzed the difficulties elementary school students have in role-playing analogy activities for concept learning of heat transfer. Eleven fifth graders were given an orientation class on role-playing analogy activity, a class for concept learning of heat transfer as presented in a textbook, and then they performed the role-playing analogy activity with concepts of heat transfer. After the classes, researchers investigated the difficulties students encountered through questionnaires and interviews. The following are results of the research: Difficulties that students faced in role-playing analogy activity can be classified into five types. First, students encountered difficulties in expressing the analogy. The students who had difficulties in expressing the analogy focused on expressions outside the science concepts or lacked understanding of the science concepts. They also had difficulties in expressing the analogy because they lacked the expressiveness of analogy or abilities in mapping errors. They had difficulties in expressing the planned role-playing analogy in a narrow space. Second, students also experienced difficulties in performing activities due to lack of understanding on activities or lack of experience. Third, students experienced difficulties in selecting roles because they preferred the specific role or unwanted the specific roles. Fourth, the members of group experienced difficulties in group activities because they did not concentrate on activities, failed to perform roles, or showed attitudes of an onlooker. Fifth, they experienced difficulties in communications due to unilateral communication, conflicts of opinions, and lack of opinions.

• Journal of the Korean Society of Costume
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• v.25
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• pp.249-268
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• 1995

Parody has recently prevailed as one of the important techniques of creation in art. The purposes of this study are to reaffirm the pos-ition of fashion as an art by clarifying parody depicted in fashion and to make an opportunity to reconsider the meaning of creation in fashion design through the significance of par-ody. For these purposes, documentary studies about parody in literature and art which had been discussed more often were preceded as a framework of this research. framework of this research. Basedd upon that, parody phenomena in fashion as well as art were analyzed. The synthetic results are as follows ; 1. Parody is a kind or critical technique and can be conceived as a process of creation. The established primary style (material) which is well-known and familiar is imitated and then is recreated in new manner through the three types of parodization, that is, the change of its external form, the change of its internal mean-ing and the shift from its place (i.e. displace-ment). 2. Parody in fashion is also analyzed based upon the three types of parodization which designer's will and expression is necessarily required. First, the parody through the change of external form is to have its effect of novelty, unexpectedness, playfulness, wit, mackery, satire, irony, paradox by changing the form of the original through imitation with similarity, transformation, exaggeration, em-phasis. Second, the parody through the change of internal meaning is to bring about paradox, irony, contempt, satire, unex-pectedness by applying the original to inappro-priate subject through its substitution, inver-sion. Third, the parody through displacement is to pursue a jarring incongruity that results from shifting the original to other context. Its effect consists of paradox, unexpectedness, playfulness, ridicule, mockery, satire, irony. In general, the parody technique in fashion can be used to have an intention of expressing seriousness, playfulness, satire, grotesque. The representative designers using the parody technique are Lagerfeld, Ricci, YSL, Yama-moto, Castelbajac, Gaultier, Mugler, West-sood, Steiner and so on. 3. Parody is the technique which imitates and then recreates the preceding style ; is at the same time the method which challenges the existing concept of originality-singleness and uniqueness. It reflects the more flexible concept of modern creation in art as well as fashion. The imitation as the creation, the characteristic of parody is recognized as an creative expressiveness, publicity, intention. Thus it differenciates from copy which is uncritical mimicry.

• Journal of the Korean Society of Costume
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• v.12
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• pp.9-23
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• 1988

This study is on the costumes for Korean traditional play, Nong-ak(farm music), and intends to analyze their aesthetic features, laying emphasis on Pilbong Nong-ak, Im sil, Chollanam-do. About its origin there are many kinds of theories; for example, the theory of hoping stability, the theory of it being related with Buddhism, the theory of martial music, etc. Shamanic, Buddhist, and martical fators that support these theories are expressed through flags, bells, drums, Deograe (half-coats), Cheonrips (sang-mo, felf hats), go-kkals(peaked hats), colored lines called 'ga-sa', which are used in Nong-ak. The characteristic of the costumes used in Pilbong Nong-ak is that it keeps its conservativeness and the costumes of its members are various and splendid. For example, leader groups' black half coats, Changbu's and Hwa-dong's red and bule over coats are remarkable. Particpants wear gok-kal or cheonrip, trousers and half coats which are the basic costumes of Korean Hanbok, and wear blak half coats or blue vests and put blue, red, and yellow lines around them. The colors and knotting methods of those lines in this region are the same with those of chollawoo-do and Kyongi province, but different form those of Kongwon and Kyong-sang province using green, red, and yellow colors. This comparison of colors shows each region's preference of peculiar colors and those colors coincide with colors used in flags. The research on the aesthetic characteristics of Nong-ak clothes through each region's clothes tells us that these can be linear clothes which have expressiveness as stage clothes used in Madangori, the play which is performed in the field, and modern spatial formativeness. Those characteristics are as follows; 1. The expressions of a rhythmical and daring round line by turning a long line of sang-mo. 2. Various rhythms according to the attaching methods. 3. The expressions of thick, simple, and daring color lines. 4. Natural beauty of materials. 5. The popular simplicity and non-technicality 6. The beauty of five-direction colors, Oriental ideal colors Consequently in this study our national consciousness of beauty are examined through clothes. It is suggested that the aesthetic characteristics of Nong-ak clothes and ornaments should be effectively expressed, for this purpose. interests in participants' clothes should be increased in order to prevent the confusion of each region's features. Also it is necessary to improve color lines, their length, width, and knotting methods, and beautify instrument. Finally this study intends to bring the reappraisal about the art of Nong-ak clothes and its re-establishment in view of modern aesthetic consciousness.

• The Journal of the Convergence on Culture Technology
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• v.6 no.2
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• pp.223-230
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• 2020

The purpose of this study was to investigate the effect of ego-resilience, adult attachment, and interpersonal competence on academic stress in nursing students and to provide the basic data of to control academic stress. Data were collected from 287 nursing students in B and C city and analyzed by t-test, ANOVA, Pearson correlation coefficient, and multiple regression using SPSS/WIN 22.0. The degree of academic stress in nursing students was 2.28±.46. There were significant differences in academic stress with respect to grade(F=16.342, p<.001), economic status(F=3.331, p=.037), number of alcohol drinking(F=3.393, p=.035), satisfaction of major(F=40.539, p<.001), college life satisfaction(F=67.304, p<.001). There was positive correlation between academic stress and adult attachment(r=.557, p<.001), negative correlation were found between academic stress and ego-resilience(r=-.379, p<.001), between academic stress and interpersonal competence(r=-.423, p<.001). The factors affecting the academic stress of the study subjects were ego-resilience(r=-.379, p<.001), adult attachment(r=.557, p<.001), with an explanatory power of 34%. Through this research requires the fellow study to determine the factors affecting academic stress of nursing students.

• Journal of the Korea Society of Computer and Information
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• v.15 no.1
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• pp.31-42
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• 2010

GPM(Generic Product Model) developed by Hitachi in Japan is a common data model to integrate and share life cycle data of nuclear power plants. GPM consists of GPM core model, an abstract model, implementation language for the model and reference library written in the language. GPM core model has a feature that it can construct a semantic network model consisting of relationships among objects. Initial GPM developed and provided GPML as an implementation language to support the feature of the core model, but afterwards the GPML was replaced by GPM-XML based on XML to achieve data interoperability with heterogeneous applications accessing a GPM data model. However, data models written in GPM-XML are insufficient to be used as a semantic network model for lack of studies which support GPM-XML and enable the models to be used as a semantic network model. This paper proposes OWL as the implementation language for GPM core model because OWL can describe ontologies similar to semantic network models and has an abundant supply of technical standards and supporting tools. Also, OWL which can be expressed in terms of RDF/XML based on XML guarantees data interoperability. This paper uses OWL DL, one of three sublanguages of OWL, because it can guarantee complete reasoning and the maximum expressiveness at the same time. The contents of this paper introduce the way how to overcome the difference between GPM and OWL DL, and, base on this way, describe how to convert the reference library written in GPML into ontologies based on OWL DL written in RDF/XML.

• Journal of Digital Convergence
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• v.19 no.4
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• pp.355-363
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• 2021

The purpose of this research is to explore the selection attributes that the director of a taekwondo gym places importance on when purchasing a work of taekwon gymnastics for the competition. We conducted in-depth interviews with 6 participants using qualitative case study techniques, and analyzed data using Creswell's (2015) spiral analysis method. The data analysis results show music, trainees, characteristics of the work, criteria for evaluating the competition, producer competence, and price factors. As a result of the research, music should be produced around diverse and differentiated genres and music preferred by the trainees, and the appropriate theme should be selected considering the expressiveness and level of the trainees. The work should be considered creative works that harmonize the movement ratio of Taekwondo movements and dance, and the length of the work should be adjusted according to the purpose of the buyer, and the construction of the work should be based on the regulations of the competition. The manufacturer should ensure smooth communication with the buyer, including coaching ability and experience at the convention site. Prices will be affordable and affordable, and prices will need to be calculated based on special prices or mentoring periods for a small number of buyers.

• The Journal of the Korea Contents Association
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• v.21 no.11
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• pp.748-760
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• 2021

The purpose of the study is to examine the mediating effects of ambivalence over emotional expression and psychological flexibility on the relationship between employees' beliefs about emotional expression and attitudes toward seeking professional psychological help. The subjects of this study were 346 employees(male: 176, female:170) over the age of 19. Questionnaires including beliefs about emotional expression, ambivalence over emotional expression, psychological flexibility, attitude toward seeking professional psychological help were conducted and the collected data were analyzed by using SPSS and Macro. A summary of the results as follows. First, in the results of the correlation analysis on the primary factors had a significant correlation. Second, psychological flexibility had a mediating effect in the relationship between beliefs about emotional expression and attitude toward seeking psychological help while mediating effect of ambivalence over emotional expression was not significant. Lastly, the sequential mediating effect of ambivalence over emotional expression and psychological flexibility between beliefs about emotional expression and attitudes toward seeking professional psychological help was significant.