• Journal of the Korean Data and Information Science Society
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• v.25 no.2
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• pp.293-304
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• 2014

A child's mental health is an important element of his proper emotional development. Abuse of children by parents and peer groups are causes of depression and anxiety in children. These conditions become obstacles to their normal growth process which can be a contributing factor to juvenile delinquency. This study is based in the theoretical background of the relationship between abuse from parents and peer groups and children's emotional health. This information is analyzed through structural equation modeling.

• Asian-Australasian Journal of Animal Sciences
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• v.27 no.6
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• pp.784-790
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• 2014

In this study we aimed to evaluate the reduction in dimensionality of 20 linear type traits and more final score in 14,943 Holstein cows in Brazil using factor analysis, and indicate their relationship with longevity and 305 d first lactation milk production. Low partial correlations (-0.19 to 0.38), the medium to high Kaiser sampling mean (0.79) and the significance of the Bartlett sphericity test (p<0.001), indicated correlations between type traits and the suitability of these data for a factor analysis, after the elimination of seven traits. Two factors had autovalues greater than one. The first included width and height of posterior udder, udder texture, udder cleft, loin strength, bone quality and final score. The second included stature, top line, chest width, body depth, fore udder attachment, angularity and final score. The linear regression of the factors on several measures of longevity and 305 d milk production showed that selection considering only the first factor should lead to improvements in longevity and 305 milk production.

• Journal of Periodontal and Implant Science
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• v.31 no.4
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• pp.803-810
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• 2001

The purposes of this study were to investigate the relationship between cigarette smoking levels and periodontal status. 199 subjects, consisting of male 127 and female 72, classified by smoking levels and duration were selected: Patients who had smoked for more than 20 cigarettes/day were considered heavy smokers, 10 to 19, moderate smokers; 1-9, light smokers:0, non-smoker. And smokers were divided into ones who had smoked for more than 20 years, 10-19 years, less than 10 years and non-smokers. Heavy smokers and moderate smokers showed significantly greater pocket depths, less clinical attachment levels, more molar furcation involvements, greater alveolar bone loss and higher scores of plaque index than light smokers and non-smokers,(p < 0.05). When the duration of smoking was considered as a factor, scores of clinical parameters were worse and alveolar bone loss were significantly greater in long-term smokers, who had smoked for more than 20 years. In conclusion, cigarette smoking is associated with periodontal status.

• The Journal of Advanced Prosthodontics
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• v.6 no.1
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• pp.66-70
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• 2014

A dynamic impression is a functional impression that records the functional movement of the patient's own muscle and muscle attachment. This process reduces the number of random factors. This article describes a method for making a special tray using a dynamic impression concept that was made from provisional dentures used for implant healing. The individual tray is used to make a wash-impression to record the features of the mucosa in detail. The main advantage of this technique is that it provides a functional relationship of the implant components to the supporting tissues without overextension because provisional denture had been used for 2 months and the border length of individual tray was nearly the same as that of provisional denture. The delivery of the prosthesis constructed using this impression technique is time-saving because there is no need for border molding and there are fewer post-insertion appliance adjustments.

• Research in Community and Public Health Nursing
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• v.7 no.1
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• pp.29-37
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• 1996

The purpose of this study is to exmine the effects of reminiscence therapy on deprssion of the elderly residing at home. The subjects were sampled from the members of senior citizens' centres located in Kwangju City. Total number was 73, 38 for the control group and 35 for the experimental group. The study was carried out after a non-equivalent pretest-posttest design. Data were collected from 23 Jun. to 11 Nov. 1993. Reminiscence therapy was applied only to the experimental group. once a week for 6 weeks. Depression level was measured by the questionnaire before and after treatment given. The results were as follows: 1. Religion and family-attachment among socioeconomic charactiristics were significantly different with the level of depression. 2. Religion and pocket - money provider among socioeconomic charactiristics were significantly different with the level of life-satisfaction. 3. The relationship between depression and life -satisfaction was a significant negative correlation(r=-0.777, P=0.000). 4. The depression level of the experimental group was significantly decreased after the treatment as contrasted with that of control group(P=0.004). On the basis of this study it can be concluded that reminiscence therapy reduces depression level.

• Journal of Periodontal and Implant Science
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• v.45 no.1
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• pp.8-13
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• 2015

Purpose: The aim of this study was to evaluate the transfer of different occlusal forces in various skeletal malocclusions using finite element analysis (FEA). Methods: Three representative human cone-beam computed tomography (CBCT) images of three skeletal malocclusions were obtained from the Department of Orthodontics, Yonsei University Dental Hospital, Seoul, South Korea. The CBCT scans were read into the visualization software after separating bones and muscles by uploading the CBCT images into Mimics (Materialise). Two separate three-dimensional (3D) files were exported to visualize the solid morphology of skeletal outlines without considering the inner structures. Individual dental impressions were taken and stone models were scanned with a 3D scanner. These images were integrated and occlusal motions were simulated. Displacement and Von Mises stress were measured at the nodes of the FEA models. The displacement and stress distribution were analyzed. FEA was performed to obtain the 3D deformation of the mandibles under loads of 100, 150, 200, and 225 kg. Results: The distortion in all three skeletal malocclusions was comparable. Greater forces resulted in observing more distortion in FEA. Conclusions: Further studies are warranted to fully evaluate the impact of skeletal malocclusion on masticatory performance using information on muscle attachment and 3D temporomandibular joint movements.

• Journal of the Korean Institute of Rural Architecture
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• v.8 no.2
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• pp.11-18
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• 2006

Ecomuseums come into close relationship with resident and community. Progress of heritage concept brings on the change of valuation standard in heritage, that life style of residents become most important element of cultural heritage. The change of display method has caused the generation of various experience programs in ecomuseum which are display and education based on participation of visitors and residents. Ecomuseums in Europe during progress have conceptual peculiarities by themes to keep the cultural identity and protect folk culture in regional community. 'Europe Ecomuseum Network' seriously affected by social change and development is new alternative to promote regional identity and cultural exchange among Europe countries. People participation with all residents is decisive factor to promote identity and attachment in native place, as well as collaboration with residents, experts, administrators and NGO is one factor for sustainable development and the realization of ecomuseum, activation of regional economy, and also is the root of efforts to protect and activate regional community.

• Journal of Arbitration Studies
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• v.29 no.1
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• pp.71-89
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• 2019

When the host states do not comply with the investor-state arbitral awards voluntarily, it is difficult for the successful claimants to seek the enforcement of arbitral awards against the host state because of the doctrine of state immunity. This raises a question whether the investors might be able to seize the assets of the state-owned enterprises, as well as those of the host states. The investors might consider the properties held by state-owned enterprises as an attractive target especially when it has been established that the host state is responsible for the act of its state-owned enterprise. In such case, the investor might argue that the close relationship between the state-owned enterprise and the host state has already been recognized so that the commercial assets of the state-owned enterprise could be subject to attachment. On the other hand, the host state might argue that the state-owned entity exists separately from the state, and thus its assets cannot be equated with those of the host state. Moreover, even if this argument is not accepted and, as a result, the properties of the state-owned entity is equated with those of the host state, the host state might still be able to argue that non-commercial assets of the state-owned enterprise are immune from execution.

• The Journal of Information Systems
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• v.30 no.4
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• pp.43-69
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• 2021

Purpose Although companies occupied the network market take the advantageous position first and can be successful in securing users over a certain size, it is important to satisfy the customers' demand and prevent the outflow of users toward a new alternative SNS. What is more, there are frequent changes in the flow of users toward new SNSs. Despite these dynamic market circumstances, there is a lack of research to explain the switching behaviors of SNS users. Design/methodology/approach The objective of this study is to explain and verify a specified migration theory(Push-Pull-Mooring model) focused on SNS fatigue in the psychological point of view, as well as reviewing previous studies on functional and technical characteristics of SNSs themselves. Moreover, this study tried to highlight factors affecting users actual SNS switch rather than their switching intention. Findings According to the statistical analysis, the most influenced pull factor to switch SNS was the alternative attractiveness. On the other hand, undesired relationship burden, service innovation and important mooring factors to prevent users' SNS switch. This study has a significant contribution to the theory, which analyzed users' actual SNS switch, and examined SNS users' psychological factors(SNS fatigue), reviewing the characteristics of existing services. To secure more users and to keep them, companies providing social network service need to develop differentiated strategies by analyzing psychological characteristics of various users.

• Fisheries and Aquatic Sciences
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• v.24 no.12
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• pp.400-405
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• 2021

In this study, the relationship between the growth of abalone and the presence of epibionts was investigated in abalone cultured in Goheung, Jeollanam-do, where there are severe problems high water temperatures and attachment. The experiment was conducted for eight months (May-December 2020), and 40 abalone were collected every month. Water temperature was at its highest at a range of 13.5℃-26.6℃ and dissolved oxygen levels were at their lowest at a range of 4.0-10.2 ㎍/L in August. The shell height (mm) of abalone grew to 117.7% (81.8 ± 1.9 mm) in cultures where epibionts were removed (ER) and 111% (77.4 ± 3.3 mm) where they were not (non-epibionts, NER). Their total weight (TW) and body weight increased significantly and steadily with ER, whereas the TW increased sharply after August with NER. In the condition index, no significant difference was observed between ER and NER. The monthly proportion of epibionts increased significantly in July, accounting for the value of 69.9% reached in December.