• Journal of Technologic Dentistry
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• v.30 no.1
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• pp.97-107
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• 2008

Objectives; The purpose of the present study is to investigate the difference in levels of satisfaction between dental laboratory owners and employed dental technicians in the area of dental laboratory management. Methods; The samples of seventy-one dental laboratory owners and sixty-six employed dental technicians were selected in a blinded and random manner. Data was collected through self-administered questionnaires and analyzed using average values, the t-test and multiple regression. Results; 1) There was no significant difference in the average values of general satisfaction levels related to dental laboratory management between dental lab owners and employees. 2) The average values of satisfaction levels in 11 specific items scored 'above average' among dental lab owners and 'average' among employees. 3) The average values of satisfaction levels in 10 specific items except for 'trust and respect' showed a significant difference between dental lab owners and employees. 4) Important factors which influenced the satisfaction level of dental lab owners were 'trust and respect' and 'improvement of employee's benefits'. In the employees group, 'trust and respect', 'improvement of employee's benefits' and 'technical information support' were important factors. Conclusion; The present study revealed that dental laboratory owners and employees have some gaps between the viewpoints in dental laboratory management. This suggests the necessity to improve management in a transparent and economical way. However this study has some limitation in that the sample size was not massive enough.

• Journal of Families and Better Life
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• v.31 no.5
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• pp.143-157
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• 2013

This study used a qualitative research method to comprehensively deal with child care training in depth with the following content: the goals of child care teachers preparing for practical training; how they perform and feel about their roles throughout the training period as child care teachers; and their evaluation after the training period. A total of 10 people participated in the research and the training activities of child care teachers were qualitatively explored based on the results. The research findings are as follows. First, child care teachers have expectations for prospective teachers and take time for self-evaluation while preparing for teaching. Also, child care teachers set a goal of helping prospective teachers develop into outstanding teachers and have expectations for it. Second, child care teachers evaluate prospective teachers by treating them as colleagues while teaching them. Furthermore, child care teachers consider themselves as educators who train and produce child care professionals. Prospective teachers define their roles as assistants and learners in the actual educational scene. In addition, child care teachers feel a sense of pride by performing as hands-on training teachers. At the same time, they reflect on themselves by evaluating their duties as educators in their relationships with prospective teachers. Third, child care teachers suggested the need for changing the training system for themselves and prospective teachers after training. In addition, they argued that the gaps between school education and the actual educational scene should be reduced through solid training for acquiring new knowledge and information in both places in accordance with the rapidly-changing child care environment. Finally, the suggested the necessity of establishing a standard training curriculum and educational programs within their institution.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.48 no.12
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• pp.35-41
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• 2011

In this paper, an analysis for a new substrate shielding symmetric coupled MIS structure consisting of grounded crossbar at the interface between Si and SiO2 layer using the Finite-Difference Time-Domain(FDTD) method is presented. In order to reduce the substrate effects on the transmission line characteristics, a shielding structure consisting of grounded crossbar lines over time-domain signal has been examined. Parameters of symmetric coupled MIS transmission line with various gaps between crossbars for even- and odd-mode are investigated as the functions of frequency, and the extracted distributed frequency-dependent transmission line parameters and corresponding equivalent circuit parameters as well as quality factor for the new MIS crossbar embedded structure are also presented. It is shown that the quality factor of the symmetric coupled transmission line can be improved without significant change in the characteristic impedance and effective dielectric constant.

• Animal cells and systems
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• v.6 no.1
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• pp.13-18
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• 2002

Phylogenetic relationships of Korean Acidiella species were tested using mitochondrial 16S ribosomal RNA gene sequences. We used 16 published sequences as outgroup, and 10 new sequences for nine Korean Acidiella species as ingroup. The number of aligned sites was 1,281 bp, but 1,135 bp were used for the analysis after excluding sites with missing data or gaps. Among these 1,135 sites, 464 sites were variable and 340 were informative for parsimony analysis. Phylogenetic information was extracted from this data set using neighbor-joining, maximum likelihood and maximum parsimony methods and compared to a morphology-based phylogenetic hypothesis. Our molecular data suggest that: (1) the tribe Trypetini appears to be monophyletic even when the nine additional Acidiella species are added to our previous phylogenetic analysis; (2) all the Korean Acidiella species belong to the Trypeta group, but the genus Acidiella is not supported as monophyletic; (3) the close relationship of A. circumvaga, A. issikii, and A. sapporensis is supported; (4) the close relationship of A. pachypogon and two additional new Acidiella species is strongly supported; and (5) the possible presence of two or more cryptic species among the specimens previously identified as A. obscuripennis is suggested. Sequence data from the mitochondrial 16S rDNA allowed us to better understand the systematic status of Korean Acidiella species. They indicated that the current concept about the genus Acidiella is insufficient and needs to be refined further. This study also showed a few interesting relationships, that had not been recognized by morphological study alone. Based on this study, we were able to plan further experiments to analyze relationships within the Trypeta Group.

• Korean journal of food and cookery science
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• v.31 no.2
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• pp.162-174
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• 2015

The purpose of this study was to evaluate the current status of dietary habits and dietary life competency of elementary school parents, who are influential to the dietary life of their children and family. A survey was conducted with 362 elementary school parents living in Seoul and Gyeonggi province by using a self-administered questionnaire consisting of 53 questions on dietary habits, dietary life competency, home cooking frequency, and dietary education needs. The results were as follows: The scores of dietary habits and dietary life competency were 76.35 and 74.51 out of 100, respectively, suggesting a need for improvement. Parents with higher monthly income, demonstrated higher scores of both dietary habits and dietary life competency (p<0.001). As expected, female parents showed higher scores of dietary life competency than male parents (p<0.01). there was also a close relationship between the scores of dietary habits and dietary life competency (r=0.58). The parents with high scores for dietary habits and dietary life competency showed a significantly higher frequency of home cooking (p<0.001) compared to medium- or low-scored parents. Most parents answered that dietary education need to be started earlier, and that their main source of dietary life information was mass media. They also showed a preference for real experience and practice for dietary education. The above results showed that there is a close relationship between dietary habits and dietary life competency, and suggest that continuous education is necessary to improve the dietary habits and dietary life competency of elementary school parents. Because monthly income appeared to be the most influential socioeconomic factor for the parents' dietary habits and dietary life competency, continuous efforts on dietary education are necessary to reduce the score gaps in these categories.

• Journal of Forest and Environmental Science
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• v.32 no.2
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• pp.164-172
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• 2016

This study examined the recognition differences between local residents and national park managers on the adjustment of national parks which are conducted every ten years for the purpose of providing basic information for the park management, according to the Natural Parks Act. Both local residents and national park managers positively perceived the adjustment of national parks, but park managers showed concern towards the damage of natural resources resulting from the cancellation and adjustment of restricted development districts in Korean national parks. Local residents are more likely than park managers to recommend boundary adjustment in other national parks regarding the influence of parks adjustment on local change. While local residents recognized that the boundary adjustment of national parks improves the level of community management, park managers focused on damages on the local environment and the park landscape adjacent to the areas. The result shows the recognition differences of local residents and park managers. Further research into adjustment of national parks is necessary to diminish perception gaps among stakeholders and develop prediction indicators of cancellation effect in response to the future cancellation areas of national parks through the characteristics of cancellation communities, revitalization of local economy, and environmental change of local community.

• Archives of Plastic Surgery
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• v.41 no.5
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• pp.505-512
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• 2014

Background Laryngeal allotransplantation (LA) is a technique involving transplantation of a deceased donor's larynx into a recipient, and it may be substituted for conventional laryngeal reconstruction. There are widely different views on LA, as the recipient is administered continuous, potentially life-threatening, immunosuppressive therapy for a functional or aesthetic result, which is not directly related to life extension. The purpose of this study was to analyze the difference in risk acceptance and expectations of LA between four population groups. Methods A survey was performed to examine patients' risk acceptance and expectations of LA. The survey included 287 subjects in total (general public, n=100; kidney transplant recipients, n=53; post-laryngectomy patients, n=34; doctors, n=100), using a Korean translated version of the louisville instrument for transplantation (LIFT) questionnaire. Results All four groups responded differently at various levels of their perception in risk acceptance and expectations. The kidney transplant recipients reported the highest risk acceptance and expectations, and the doctor group the lowest. Conclusions This study examined the disparate perception between specific population groups of the risks and benefits of using LA for the promotion of the quality of life. By addressing the information gaps about LA in the different populations that have been highlighted from this survey, we suggest that LA can become a more viable alternative to classical surgery with resultant improved quality of life for patients.

• Journal of Korean Society of Transportation
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• v.26 no.6
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• pp.71-80
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• 2008

Typically uncontrolled intersections are characterized by the absence of signal, stop and yield sign, and by very light traffic volume. In this study, a gap acceptance model for such uncontrolled intersections has been modeled. The motivation is to identify the behavior of drivers so that the traffic flow phenomena can be easily understood. For this, actual traffic survey was accomplished at intersections in Suwon and the data have been fed into modeling process. The logit model was used and the results showed that total delay experienced by drivers, turning right movement, age, sex, and the existence of passenger affected gap acceptance. For example, male drivers, with experiencing longer delay and having passenger(s) with them, accepted shorter gaps. These identified characteristics regarding gap acceptance could be used for facility design and/or safety oriented traffic information dissemination near uncontrolled intersections.

• Journal of Korean society of Dental Hygiene
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• v.14 no.2
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• pp.181-187
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• 2014

Objectives : The purpose of this study is to investigate the effect of oral health education conducted by a dental hygienist in order to provide some information on intensive oral health education to elementary school students. Methods : Subjects were the students of J and M elementary schools in Seoul from October 28 to November 16, 2011. Oral health education was provided by a dental hygienist, and then they took the PHP test again to verify the effect of the oral health education. Results : Concerning changes in PHP scores after the oral health education, the scores of the students dropped from 2.34 in the pretest to 1.85 in the posttest(p<.001). As to changes in PHP scores by grade after the oral health education, the third graders and sixth graders got 2.40 and 1.36, respectively. Regarding satisfaction level with the oral health education, they got 4.07 out of five points. Among the items of satisfaction with the oral health education by grade, there were significant gaps in a change of toothbrushing method(p<.001) and a change of dietary control(p<.001) by grade. Conclusions : The finding of the study showed that both the third and sixth graders had less score in the PHP test and credibility to the effectiveness of the oral health education by the dental hygienist.

• Informatization Policy
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• v.23 no.1
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• pp.56-73
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• 2016

The Internet of Things (IoT) is expected to provide new business opportunities by connecting devices, persons, and their data. However, the value proposed by IoT cannot be realized without trust. As IoT premises on the seamless connections, it should guarantee trust among the connected persons and things. However, there is lack of relevant discussion on how to achieve trustworthy connections and interactions because most of academic studies have mainly focused on the development of IoT platforms and applications. To fill the gaps, recent EU-funded projects such as uTRUSTit, ABC4Trust, Inter-Trust, COMPOSE, and SMARTIE have been conducted under the FP7-ICT Framework Programme. This paper presents and discusses each project's purpose and approach. Although their approaches are somewhat different from each other, all of them dedicate to achieving both privacy and security by providing the trustworthy connections. It seems to be clear that Korea also needs more academic and practical contribution in terms of researches, to implement "trust"among connected things, which will eventually satisfy what really IoT is expected for.