The Society of Convergence Knowledge Transactions ISSN:2287-8920(Print) 융복합지식학회논문지

The long-term stability assessment for the district heating pipe is complex problem which has to be consider the not only static loading but also dynamic loading. This study assessed the structural stability for the district heating pipe based on static structural analysis prior to the long-term stability assessment (fatigue analysis) for the dynamic loading such as thermal and vibration loading. Based on the finite element method, the numerical model was constructed and then the parametric study was also conducted for the total of 29 scenarios in order to investigate the effect of various parameters on the structural stability. It covers temperature difference, coefficient of friction between the soil and district heating pipe, and unit weight of soil. It was found that the deformation characteristics of district heating pipe was similar to that of rigid pipe due to arching effect and as coefficient of friction and unit weight of soil increasing, the stress applied at outer pipe decreases. However, the effect of temperature difference on the structural stability was dominant.

In this paper, we propose a system that recommends desserts by grasping dietary lifestyle and selection attributes. In addition, the relationship between dietary lifestyle and dessert cafe selection attributes is analyzed and mapped to provide practical information. In this paper, the dietary lifestyle is related to the dessert cafe selection attribute to induce interest and to induce interest outside of the existing recommended application uniformity. Four kinds of analyzes were made on how it affects. It collects dessert data on social media and applies it to the topic map, and connects the dietary lifestyle type and the dessert cafe selection attribute type. In addition, it is possible to recommend desserts using a topic map-based keyword extraction technique and wide deep learning. This is because the importance of applications is increasing as the IT industry develops, and according to the type of dietary lifestyle and the properties of dessert cafes, eating out consumers develop as a way to express their disposition, and according to personal preference and dietary lifestyle. Different types of consumption are different.

Bridge stormwater runoff is drained by a bridge drainage (bridge inlet, linear drainage)facility installed at the side of the bridge. Poor drainage in the drainage facility on the bridge has various problems such as peeling of concrete, deterioration of the bridge, and damage to the aesthetics of the bridge. Therefore, a bridge linear drainage facility with improved drainage efficiency of the catchment drainage facility is needed. In addition, for the proper installation of the bridge linear drainage facility, it is necessary to present the installation standard through the analysis of the drainage capacity of the linear drainage system. In this study, a model was made by improving the shortcomings of the linear drainage facility of the bridge barrier, and a hydraulic experiment was performed to analyze the drainage capacity required for the design. As a result of the experiment, the total flow width was in the range of 52~90cm, and as the longitudinal slope of the road for each drainage interval increased, the flow width decreased. The overall vehicle picking efficiency was in the range of 1.5 to 21%, and the longitudinal slope of the road increased or the same species for each drainage interval. When inclined, it decreased as the inflow flow increased. In addition, the maximum installation length of the bridge protection wall linear drainage facility according to the road conditions for each drainage interval was suggested based on the rainfall intensity and the amount of vehicle collection. It is believed that this can be used as basic data for presenting the design criteria for the linear drainage facility of the bridge barrier.

This study analyzed the learning experiences of nursing students in simulations applying Debriefing for Meaningful Learning (DML). There are a total of 18 research participants, and the research method is a qualitative research content analysis method that freely describes the learning experiences from November 23 to December 18, 2020. As a result of the study, 7 categories and 13 meaningful statements were derived from a total of 3 areas of participation, exploration, and evaluation. In conclusion, DML application class provides opportunities for further development for reinforcement of learning content acquisition and knowledge application. Therefore, it is suggested to expand research by applying DML to various learning.

In this paper, we propose a no-reference image quality assessment algorithm based on spatial transformation of color and blur feature information in order to secure the reliability of the quality. As a field of application of image data increased, the amount of data also increased rapidly. In addition, since the quality of image data has a great influence on the result, it is necessary to classify high-quality images in advance. Existing methods simply mean that the quality of the image is good when the score of image quality assessment is high or low. However, there is a difficulty in classifying images as having good or bad quality. Therefore, we try to solve the problems of the existing algorithms by proposing an algorithm to classify distortion images with low quality reliability, and use four data sets of CSIQ, KADID, LIVE, TID2013 and DMOS, which are known most. In order to analyze the accuracy of classification performance, this method was applied equally to the existing methods and compared, and the proposed method was shown to be higher than that of the existing methods.

This study attempted a meta-analysis of the effects of domestic hospital nurse occupational stress management program studies. The research subjects have been 36 studies published in Korea so far, and the results of 177 effect sizes combined. The overall average effect size of the nurse occupational stress management program was 0.833. The effect size according to the dependent variable had a large effect size that strengthened individual resources and alleviated occupational stress. The type of program was a very large effect size in art programs, followed by cognitive behavioral programs with a moderate effect size. By department of work, there was a huge effect size in outpatient nurses and psychiatric ward nurses. On the other hand, emergency room nurses showed the lowest effect size. The program had a large effect when it operated twice a week and for more than 60 minutes and less than 180 minutes per session. The effect of regulation was shown in the number of operations and the year of publication. This study could be used as a basis for developing a nurse’s job stress management program. In particular, it is necessary to develop nurse occupational stress programs that can strengthen personal resources and supplement cognitive aspects.

According to spreading COVID 19 extensively, it needs increasingly the social technology for dealing with prevention of spread efficiently. Our country as well as international community has developed various technologies for COVID 19 quarantine and adopted them to various circumstances. This paper proposes a electronic access control service using beacon utilized for indoor positioning, in order to overcome disadvantages QR-based electronic access control services that are introduced for COVID prevention. The proposed service enables to minimize the access of the manager to the electronic control service by that users send directly their location information to the sever with beacon. Accordingly, the proposed service avoids one-to-one correspondence between the manager and the user of existing schemes for pandemic quarantine. The proposed service makes possible quick completion of entry list when a number of users access a place simultaneously. Also it enables to minimize the task of the manager for user access controls.

The development of ICT is changing people’s lives in various fields from the past. Especially in the current era called as the 4th Industrial Revolution, intelligent and realistic digital worlds, those are distinctly different from past patterns, are deeply rooted in society with 5G as the word revolution. Covid19 era, starting in 2020, is expressed as a word of Ontact and accelerates the pace of change dramatically. Technologies and services are being provided to replace daily contact and cultural life such as performances and exhibitions where participation in the place was important in the past is being transformed to Ontact as compulsory. For generations expressed in Millennium and Z, especially for Generation Z, recognized as born holding a smartphone, online is regarded as a more natural method for information acquisition, social relationship formation, and experience accumulation. In response to this change, research continues to improve the satisfaction of online users, and in particular, the reality aspect is recognized as an important factor. In this study, real-time reactive 3D web will be applied to online virtual art exhibition halls to provide services that enhance the reality and user convenience of the exhibition.

This study was conducted to verify the effect of service quality of golf courses on place attachment and customer behavior. The results of this study are as follows. First, service quality of golf course (tangibles, reliability, responsiveness, assurance, empathy) had a partially positive effect on place attachment. Second, service quality of golf course (tangibles, reliability, responsiveness, assurance, empathy) partially had a positive effect on customer behaviors. Third, in the relationship between golf course service quality (tangibles, reliability, responsiveness, assurance, empathy) and customer behavior, place attachment had a partly mediating role. Among the sub-factors of service quality, place attachment had a mediating role only in the relationship between tangibles and customer behavior. It is most important to improve the physical environment corresponding to the tangibles among the sub-factors of service quality of golf course, and it is necessary to divide the physical environment of the golf course into golf-related factors and a non-golf related factor and operate it according to the needs of golfers. Therefore, in the case of a golf course, careful management of the core physical environment related to the golf score, such as the condition and speed of the green, the condition of the grass of the fairway, the condition of the bunker, the appropriateness of the rough, and the condition of the teeing ground is required.

Data migration refers to moving a database built on one computer system to another. Data migration is an important process that most organizations must perform when building information systems that form the basis of business activities, and there are few dedicated tools and standard methodologies. The implication of this study is that the data migration project should be recognized from a strategic perspective and used as an opportunity to improve data quality. This is because, as low-value data is removed through the data migration process, faster information services are possible, and ultimately, improved business results can be generated. When data transfer is performed by creating a checklist of the proposed transfer stage, it is expected that the new platform will change to an information system that reflects user requirements well. In this study, only the work description, ERD, and Fat files of the legacy system were considered, but if a checklist for each step is defined in the future, it can be developed as a standard methodology for data migration.

The role of public organization members is becoming important in the modern society, which is represented by rapidly changing organizational structure and uncertainty. In particular, there is a growing interest in cooperative organizational citizenship behaviour that emphasizes altruistic and voluntary innovative behaviour based on flexible environmental coping ability that is not related to compensation system beyond traditional and official tasks set in the public sector. In this study, the perception of organizational politics (POPS) that inhibits organizational citizenship behaviour by dividing the variables into positive and negative influences on the activation of organizational citizenship behaviour and the variables that inhibit it and the Leader-Member exchange (LMX) that promotes it Two variables and sub-variables of each dimension were verified. First, perception of organizational politics (POPS) and its sub-variables, profit-oriented political behaviour, and promotion policy. Second, Leader-Member exchange (LMX) and its sub-variables were affect, loyalty, contribution, and professional respect. As a result of the analysis, on the perception of organizational politics (POPS) and profit-oriented political behaviour were verified as negative (-), and the hypotheses were verified under the influence of positive (+) on the Leader-Member exchange (LMX) between Leader-Member exchange (LMX), loyalty, and contribution.

The purpose of this study is to predict the psychological problems that may arise after the unification of the South and North Korea based on the case of German unification, and to present an integrated plan to solve them. Though Germany is making various efforts for social and psychological integration after unification, but psychological conflicts and aftermath remain even after 30 years. Compared to institutional integration, psychological integration takes a long time, so it is necessary to prepare for psychological conflict no matter what form of unification takes place. In the case of North and South Korea, compared to Germany, pre-unification exchanges are not actively taking place, and given the fact that North Korea is closed and isolated in the international community, it can be predicted that the psychological conflict will be greater than that between West and East Germany. The difference in psychological characteristics due to the heterogeneous social system of South and North Korea's liberal democracy and socialism can lead to social and psychological conflicts after unification, so preparations for psychological conflicts must be prepared prior to unification. There are several institutions that provide counseling services for North Korean defectors' psychological difficulties, but the programs are lacking in systematicity, and there are areas that need to be supplemented, such as the discovery of clients who urgently require counseling. In addition, since counseling studies on unification are insufficient, many counseling studies for psychological integration between the two Koreas should be conducted. In this study, the importance of the perspective of interculturalism between North and South Korean residents for the psychological integration of the two Koreas is mentioned, a small, long-term interaction using various counseling techniques is proposed, and a counseling policy for psychological integration is presented as a point of discussion.

This study was conducted with the purpose of examining the sequential mediating effects of self-esteem and peer relationships in the relationship between bicultural acceptance attitude and academic adaptation of multicultural adolescents. For this purpose, data of 1,197 multicultural adolescents who participated in the 8th year survey (2018) of the ‘Multicultural Adolescent Panel Study’ conducted by the National Youth Policy Institute was used and analyzed. As a result of the study, it was found that the while the bicultural acceptance attitude of multicultural adolescents had a significant effect on academic adaptation, self-esteem and peer relationship were found to mediate these relationships sequentially, confirming a partial mediating effect. Based on the results of this study, ways to help multicultural adolescents adapt to their studies and improve their overall quality of life were sought and discussed, and limitations of this study and suggestions for follow-up studies were made.

The purpose of this study is to provide basic data necessary for future research on physical fitness for young children through the analysis of research trends related to the topic. To this end, 226 papers related to young children fitness that had been published by December 2020 were analyzed based on research time periods, topics, methods, and results. The analysis revealed that studies on early childhood fitness were published the most in the 2010s. Additionally, the trends that were studied the most in this area were the verification of the effectiveness of physical fitness programs, followed by the measurement and evaluation of development, analysis of variable relationships, and tool development; additionally, most of the programs were performed and analyzed in relation to infants. The most common type of research performed was experimental research on the effectiveness of the program. Moreover, in the trends analyzed in the study, the most effective verification methods in early childhood fitness were determined. The results of the meta-analysis showed that most studies on early childhood fitness were conducted from the 2000s onwards, and that the studies verify the effectiveness of the fitness program and suggest that further research should be conducted as to expand it into different areas and determine more varied research methods.