• Child Health Nursing Research
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• v.20 no.3
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• pp.205-214
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• 2014

Purpose: The purpose of the study was to develop and evaluate the effect of a metabolic syndrome prevention program using mobile application for university students. Methods: A pretest-posttest design with content analysis as a triangulation method was used. The participants were 49 university students. Data were analyzed using descriptive statistics, $x^2$-test, t-test and Fisher's exact test with the SPSS WIN 18.0 program. Results: The application consisted of six main menus as follows: 'basic education', 'nutrition education', 'exercise education', 'meal diary', 'exercise checkup', and 'tips'. The experimental group had higher recognition about metabolic syndrome prevention than the control group (F=7.919, p=.007). Understanding of metabolic syndrome among participants was mostly related to chronic diseases such as obesity, hypertension and diabetes in relation to the importance of eating habits and exercising. Conclusion: The results indicate that metabolic syndrome prevention education using mobile application is necessary and would be useful for university students.

• The Korean Journal of Mycology
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• v.47 no.4
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• pp.393-406
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• 2019

In August 2017, anthracnose symptoms were observed on the petioles and leaf veins of Korean radish (Rhaphanus sativus) in Hongcheon, Jeongseon, and Pyeongchang of the Gangwon province, Korea. Many grayish to dark-brown spots of 1-2 mm in diameter, appeared on the lower surface and leaf veins of the radish leaves. The spots gradually enlarged and coalesced to form dark-brown irregular lesions. Ten Colletotrichum isolates were obtained from the affected tissues of the Korean radish. Out of them, eight isolates were identified as C. higginsianum and two isolates were identified as C. truncatum based on morphological characteristics and multi-locus molecular phylogenetic analysis using the internal transcribed spacers and intervening 5.8S rDNA (ITS), partial beta-tubulin gene (TUB2), partial actin gene (ACT), and partial chitin synthase-1 gene (CHS1). The pathogenicity test was carried out on wounded and unwounded Korean radish (cv. Siraegimu and Osarimu), and Chinese cabbage (cv. Chuno and Smart) by inoculating with a spore suspension. All isolates except one C. truncatum isolate developed typical symptoms on both wounded and unwounded Korean radish. In Chinese cabbage, only the plants inoculated with C. higginsianum isolates developed symptoms regardless of the wound. This is the first report of anthracnose caused by C. truncatum on Korean radish in Korea.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.6
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• pp.197-208
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• 2017

The purpose of this study was to construct and test a structural equation model for college student's gambling behavior. A structured questionnaire was completed by 246 college students to analyze the relationships between perspective factors(irrational gambling belief), psychological factors(depression, anxiety), social factors(parental monitoring, parental support, friend support), self-control and gambling behavior. The moderating effects of gender, friends and family's gambling behaviors were examined. The data were analyzed using SPSS 21,0 and AMOS 20.0 programs. Self-control and psychological factors directly affected the college student's gambling behavior, while perspective factors and social factors affected it indirectly. The model fit indices of the modified model were suitable for the recommended levels. The overall study findings suggest the need to develop a gambling prevention program for college students that reinforces self-control, parental monitoring and support, and friend support while reducing irrational gambling belief, depression, and anxiety. An approach that considers gender and a development of a group counseling program for family or friends are also required.

• The Journal of the Korea Contents Association
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• v.16 no.5
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• pp.623-637
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• 2016

This study examined the importance of social capital in facilitating older adults' learning and adaptation of information technology as well as alleviating depressive symptoms. At two senior community centers in South Korea, 144 adults aged 60 and older were recruited to participate in 12 week-long technology classes to learn computers, smart phone, and internet skills. At the baseline interviews were conducted to assess their health status, depression, and online social relationships. Online and offline social capital (bonding vs. bridging) was assessed (Williams, 2006). Four-step Hierarchical Linear Regression analysis was conducted to examine the effects of online social relationship on depression. Findings suggested that depressive symptoms were associated with being widowed, being unemployed, and perceiving poor health status. Adding social capital variables in the final step, older adults who perceived less stressors, greater level of subjective health and high online bonding capitals had less depressive symptoms. Only online social bonding was significant in alleviating depression. This final model explained 48% of the variance. Computer/Internet training for older adults need to consider the significant role bonding social capital can play. The findings of this pilot study provided a preliminary base of knowledge about acceptable community-based interventions for older adults.

• Science of Emotion and Sensibility
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• v.16 no.4
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• pp.517-526
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• 2013

This paper reports on flexible plastic optical fiber (POF) fabric displays which are used to develop light-emitting clothing from photonic fabric. We first evaluated the luminescence value corresponding to different methods of processing flexible optical fibers, types of reflective fabric structure, and colors of the light. Moreover, we tried to identify the optimum conditions of the flexible POF fabric displays to realize high luminescence value. The processing methods that were compared were the "Pre-etching" method and the "Post-etching" method. On the basis of the reflective structure of the fabric, the fabrics were categorized as the "White fabric" and the "Reflective fabric." Analysis results showed that the effect of the processing method is more dominant than that of the types of reflective fabric structure. Further, the capability of the Post-etching method to increase luminescence value is slightly higher than that of the Pre-etching method. Further, the 'Reflective fabric' is slightly more efficacious as the base fabric to increase the luminescence value, than the White fabric is. Thus, optimum increase in luminance can be realized by employing the Post-etching method and the Reflective fabric as the base fabric.

• Applied Chemistry for Engineering
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• v.16 no.4
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• pp.527-532
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• 2005

Ionic polymer metal composites (IPMC) are soft polymeric smart materials having large displacement at low voltage in air and water. The polymeric electrolyte actuator consists of a thin and porous membrane and metal electrodes plated on both faces, in impregnation electro-plating method. The response and actuation of actuator are governed. Among many factors governing the activation and response of IPMC actuator, the surface electrode plays an important role. In this study, the well-designed modification of electrode surface was carried out in order to improve the chemical stability well as electromechanical characteristics of the IPMC actuator. We employed Ion Beam Assisted Deposition (IBAD) method to prepare the topologically homogeneous thin surface electrode. After roughing the surface of Nafion membrane in order to get a larger surface area, the IPMC was prepared by impregnation for electro-plating and re- coating on the surface through traditional chemical deposition, followed by an additional surface treatment with high conductive metals with IBAD. It was observed that our IPMC specimen shows the enhanced surface electrical properties as well as the improved actuation and response characteristics under applied electric field.

• Journal of the Economic Geographical Society of Korea
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• v.23 no.1
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• pp.56-70
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• 2020

This study identifies the impact of social network service (SNS) on the spatial characteristics of retail stores locations in the hyper-connected society, which have been closely related to the everyday lives of urban residents. In particular, we focus on the changes in the spatial distribution of restaurants since the information retrieval process was added to the decision-making process of a consumer's restaurant selection. Empirically, we analyze restaurants in Seoul, Korea since the smart-phone was introduced. By applying the kernel density estimation and Moran's I index, we examine the changes in the spatial distribution pattern of restaurants during the last ten years for running, newly-open and closed restaurants as well as SNS popular ones. Finally, we develop a spatial regression model to identify geographic features affecting their locations. As the results, we identified geographical variables and online factors that influence the location of restaurants. The results of this study could provide important groundwork for food and beverage location planning and policy formulation.

• Clean Technology
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• v.18 no.3
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• pp.301-306
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• 2012

Rapidly growing mobile machines such as tablet PC and smart phone are equipped with touch screen panel using a sturdy material for products surface protection. Therefore, surge of chemically strengthened glass was increased and the amount of waste matter is proportional to demand. The purpose of this study is environmental impact assessment on touch screen panel of chemically strengthened glass by material life cycle assessment (MLCA). We used CES of Granta, SimaPro and Gabi software for MLCA. Chemically strengthened glass (2.7, 5.7 and 10.3 inch) was calculated to environmental impact assessment by Granta software under two cases. One case is Landfill and the other case is Reuse. As a result, in case of reuse, energy values of 2.7, 5.7 and 10.3 inches were reduced by an average of 51.4%, $CO_2$ values were reduced by an average of 46.6% than Landfill case, respectively. We assessed impact categories of 11 types using SimaPro software. As a result, the contents of fossil fuels, inorganics and climate change have a huge impact than the other impact categories. And the main cause of environmental impact is antimony and hydrogen fluoride in Gabi results.

• The Journal of the Korea Contents Association
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• v.15 no.5
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• pp.283-294
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• 2015

The study examines the effect of IT education on on-line social relationship of older adults. The study group composed of 114 older adults who received IT education (computer class, internet class, and smart-phone class) at two community welfare centers in Seoul. In order to compare the effect of IT education of the study group, the control group who did not receive any IT education was recruited (N = 30). Social Capital Scale was used to measure on-line social relationship. The on-line social relationship was composed of social bonding type and social bridging type. Results showed that the study group significantly higher scores than did the control group on three subscales (emotional support, access to scare or limited resources, and out-group antagonism) of social bonding type except one subscale (ability to mobilize solidarity). With regard to social bridging type of social relationship, the study group significantly higher scores that did the control group on all four subscales (outward looking, contact with a broad rage of people, a view of oneself as part of a broader group, and diffuse reciprocity with a broader community). The findings highlight the importance of IT education for older adults to expand and increase social bonding and social bridging of social relationship.

• 대한공업교육학회지
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• v.43 no.2
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• pp.24-42
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• 2018

Chemical batteries are indispensable materials, and technologies related to chemical batteries are important as they are linked to various social problems; further, they directly affect our lives. Thus, the topic of chemical batteries is suitable for industrial education. However, there has not been sufficient educational use of chemical batteries in Korea, and existing research materials do not correspond with the present curriculum. The STS teaching-learning materials about chemical batteries in this study were developed by the curriculum development model (preparation, development, improvement) for chemical engineering students in specialized vocational high schools. In the preparation stage, the study topic and the learning objective were selected by analyzing previous research about the STS and chemical battery. At the development stage, STS class plan and teaching-learning materials were developed. In the improvement stage, The STS curriculum plan and the teaching-learning materials were verified by a group of specialists and a survey regarding student satisfaction was conducted. As a result of conducting the class with the teaching-learning materials developed in this study, a positive effect in terms of students' perceptions, understanding and interest.