• Journal of Oral Medicine and Pain
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• v.22 no.2
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• pp.295-307
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• 1997

This study was performed to investigate the reproductibility of eccentric mandibular movements according to preferred chewing side, range of mouth opening, type of lateral guidance and involvement of temporomandibular disorders. 50 patients with temporomandibular disorders and 65 dental students without any signs and symptoms were randomly selected for this study as the patients group and the control group, respectively. For recording and observation of eccentric mandibular movement trajectory, BioEGN$^\textregistered$ of Biopak$^\textregistered$ system (Bioresearch Inc., USA) was used. Each eccentric movement to anterior, right and left side was performed three times similar to the movement pattern for Pantronic Reproducibility Index. mandibular path was analyzed by three dimensional positional change and the three paths from one direction were compared with one another. From this, reproducibility index of one-directional lateral movement could be calculated, and total reproducibility index, named BioEGN reproducibility index(BERI), was also computed from three-directional eccentric movement likewise. BioEGN reproducibility Index could have four value of score by small or large scale, and by outgoing or incoming movement. The data were analyzed by SAS/stat program and the results obtained were as follows: 1. Right side chewing subjects showed more consistent pattern In reproducibility index in comparison between patients group and control group than left chewing subjects have done, and reproducibility was low in patients group. However, there was no difference between the two stoups in bilateral chewing subjects. 2. There were no difference in reproducibility index between preferred chewing side and contralateral side in unilateral chewing subjects whereas reproducibility index in left side on outgoing movement were higher than in right side in bilateral chewing subjects. 3. Difference in total reproducibility index(BERI) between canine guidance group and non-canine guidance group were not observed though difference in reproducibility index on lateral movement were observed in part. 4. There were no difference in reproducibility index between affected side and contralateral side in unilaterally affected patients, and between unilaterally affected patients and bilaterally affected patients in patients group. 5. Highly significant positive correlationship were shown among the four 쇼pes of total reproducibility index(BERI) in total subjects, and range of clinical mouth opening was negatively correlated with BEBI on outgoing movements and with index on outgoing movement to preferred side.

• The Journal of Korean Academy of Prosthodontics
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• v.29 no.2
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• pp.295-317
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• 1991

The discrepancy between centric relation and centric occlusion have a great role on the successful prosthodontic and occlusal treatment. This study was performed to investigate the effect of the discrepancy between centric relation and centric occlusion on condylar guidance inclination and Bennett shift (immediate and progressive side shift). Sixteen adults who have physiologically normal occlusion and are free of TMJ dysfunction were selected. The amount of the sagittal CR-CO discrepancy in lower anterior incisor was obtained by Saphon Visi-Trainer. The amount of the CR-CO discrepancy in condylar level was measured on the individualized corrected tomography. Pantronic survey was performed by using a arbitrary hinge axis according to manufacturer's direction. All subjects were divided into two groups, group I (small) and group II (large), according to the amount of CR-CO discrepancy. At first the amount of the CR-CO discrepancy in condylar level between two groups was compared and then the condylar guidance inclination and Bennett shift between two groups were compared and analyzed. The results were as follows; 1. The average CR-CO discrepancy in lower anterior incisors was 0.7mm superoinferiorly, 0.49mm anteroposteriorly, and 0.88 mm in total. The average CR-CO discrepancy in condylar level was 0.43mm. 2. The CR-CO discrepancy measured on teeth level and condylar level were highly correlated (p<0.01). 3. The correlation of the condylar position in the glenoid fossa between two groups was not statistically significant. 4. The large CR-CO discrepancy group showed greater amount of Bennett shift and condylar guidance inclination, but there is no statistical significancy. 5. It seems that the CR-CO discrepancy have greater effect on progressive side shift than other elements of mandibular movements.

• Journal of the Korean Society of Radiology
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• v.16 no.7
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• pp.985-993
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• 2022

This study was conducted to compare and evaluate the expectations and satisfaction of clinical practice for students who conducted practice at clinical practice institutions of various sizes before and after COVID-19, and to suggest future clinical practice guidance methods and operation directions. There was a significant difference in the evaluation of satisfaction with practice before and after COVID-19, especially after the evaluation of satisfaction with practice guidance, practice environment, and practice time. As a result of analyzing the decisive influencing factors related to practice satisfaction, students who conducted practice at university hospitals highly evaluated the institutional environmental factors, and students who conducted practice at small and medium-sized hospitals showed high satisfaction in participation-oriented practice. Therefore, it is thought that practice that utilizes the strengths and weaknesses of university hospitals and small and medium-sized hospitals will be more effective than clinical practice that relies only on university hospitals. However, in order to diversify the training institution to small and medium-sized hospitals, it is necessary to create a manual on standardized training courses, training methods, and evaluation methods suitable for the training goals and curriculum, and provide them to the institution. In addition, if it is operated through sufficient exchange of opinions and consultation with institutions, schools will be able to obtain opportunities to cultivate practical talents, and small and medium-sized hospitals with difficulties in expanding manpower will be able to secure excellent human resources first.

• Journal of dental hygiene science
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• v.9 no.1
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• pp.25-34
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• 2009

The present study purposed to survey dental hygiene students who will play important roles in guidance and to utilize the data as basic information for setting the direction of dental hygienists' efficient guidance for antismoking and developing antismoking education programs. For this purpose, a survey was conducted with 400 students at the Department of Dental Hygiene in Daejeon, Jollabuk-do and Jollanam-do during the period from May 19 to June 14 in 2008, and drew conclusions as follows: As to correlations among self-efficacy, smoking knowledge, and perception on guidance for antismoking, positive correlation was observed between self-efficacy and smoking knowledge (r=0.102), between self-efficacy and perception on guidance for antismoking (r=0.272), and between smoking knowledge and perception on guidance for antismoking (r=0.352). As to factors affecting perception on guidance for antismoking, the effect was high in order of perception on smoking, smoking knowledge, and self-efficacy. That is, perception on guidance for antismoking was more positive in those who thought that smoking must not be allowed, those with high smoking knowledge, and those with high self-efficacy. For dental hygienists' clinical activities for efficient prevention of smoking and guidance for antismoking, it is necessary to develop curriculums containing various practical contents.

• The Journal of Korean Society for Radiation Therapy
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• v.24 no.2
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• pp.175-181
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• 2012

Purpose: This study aimed to analyze the influence of aquaplastic mask which is used for the radiotherapy for patients with head and neck cancer on patient positioning by analyzing the results of 2D/2D matching with the use of Exactrac 6D couch system. Materials and Methods: 2D/2D matching-based Image guidance was performed with the use of Exactrac 6D couch system on a total of 14 patients with head and neck cancer who received radiotherapy at this hospital in a period from June 2010 to June 2011. The adjusted 6D values obtained after the image guidance were classified into values related with patients and values not related with patients as to the correlation between the results. Results: In the analysis of the relation of each adjusted value to patients, the coefficient of determination ($R^2$) of longitudinal and pitch direction was 0.76, of longitudinal and yaw direction was 0.48, and of pitch and yaw direction was 0.42 although the coefficient of determination for above factors was 0.03 or less when the dependency of patients was excluded. Conclusion: It was demonstrated that intrinsic factors of aquaplastic mask had influence on the immobilization of patients by aquaplastic mask although various factors related with patients had influence on the immobilization of patients. It is believed that if these factors are adjusted, the treatment of patients with head and neck cancer can be more accurate.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.40 no.2
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• pp.119-133
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• 2022

Due to the improvement of surveying, mapping and communication techniques, various apps for road direction guides and vehicle navigations have been developed. Although such a development has impacted on walking and driving, there is a limit to improving the daily convenience of the socially impaired people. This is mainly due to the fact that the software have been developed for normal pedestrians and drivers. Therefore, visually impaired people still have problems with the confusion of direction and/or non-provision of risk factors in walking. This study aimed to propose a scheme which constructs data for mobility-impaired or traffic-impaired people based on various geospatial information. The factors and components related to walking for the visually impaired are selected by geospatial data and a walking route guidance network that can be applied to a commercial software. As a result, it was confirmed that road direction guidance would be possible if additional contents, such as braille blocks (dotted/linear), sound signals, bus stops, and bollards are secured. In addition, an initial version of the application software was implemented based on the suggested data model and its usefulness was evaluated to a visually impaired person. To advance the stability of the service in walking for the visually impaired people, various geospatial data obtained by multiple institutes are necessary to be combined, and various sensors and voice technologies are required to be connected and utilized through ICT (Information and Communications Technologies) technology in near future.

• Journal of Fisheries and Marine Sciences Education
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• v.14 no.2
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• pp.129-148
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• 2002

The purpose of this study was to investigate of fishery consciousness for fisheries high school teachers. The data was collected from 61 fisheries high school teachers in Kyungbuk Province. The treatment of materials are classified by level of academic careers, teaching careers. This research evaluated percentage to the frequency of reponses to each question and carried out $\chi^2$ - test, etc. The statistically significant level accounted for p<.05 and made use of SPSS10.0. The conclusion of the study were as follows: Strategic development of fisheries high school on fishery consciousness need to program with fishery characteristic, to promote maritime affairs had better systematic publicity activities. On educational system policy need to keep consistency of occupational education policy, change of titles of school and reconstruction of department, expand of carrier guidance direction. On high self-conceit of Hsheries high school teachers need to many discussion be based program of school itself and academic society. And director and vice-principle station region of islands, etc.

• International Journal of Aeronautical and Space Sciences
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• v.16 no.2
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• pp.148-156
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• 2015

A continuous type side jet controller which has four nozzles with thrust control devices was considered. It is deployed to a missile for high maneuverability and fast controllability in the terminal guidance phase. However, it causes more complex aerodynamic jet interactions between the side jet and the supersonic free stream than does the conventional impulse type side jet with a small single thruster. In this paper, a numerical investigation of the jet interference effects for the missile equipped with a continuous type side jet thruster is presented. A three-dimensional flow field was simulated by using a commercial unstructured-based CFD solver. The numerical simulation method was validated through comparison with wind tunnel test results for the single jet. The method of defining jet direction for this type of side jet control to minimize simulation cases was also introduced. Flow fields investigation and jet interaction effects for various flow conditions, jet pressure ratios and defined jet direction conditions were performed. From the numerical simulation for the continuous type side jet, extensive aerodynamic interference data were obtained to construct an aerodynamic coefficients database for precise missile control.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2011.04a
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• pp.97-102
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• 2011

The characteristics of traditional Thai houses are post-and-beam structure, lifted floor on pillars, and gabled roof as like as houses in other Southeast Asia countries. However 'charn', connective terrace among each room, is the most unique element in Thai houses which make the area under the 'charn' cool and useful. In Thailand, there are number of housing types caused by historic, social, cultural and geographic factors. This research is focused on comparative study of planning of traditional Thai houses of central and northern region, which have the biggest differences in between. Thai traditional house in central region has symmetrical arrangement on layout and when family members are added, they extend 'charn' and attach another building. While in Northern region, the 'charn' is located not in the center and in the front, and the direction of the main building is perpendicular to the length direction of the veranda. This research has a limitation to be generalized because just two region in Thailand were analyzed and the numbers of case studies were few. Nevertheless, we expect this paper to be a primary guidance to understand Thai traditional houses and we also expect that our research area will cover the all areas in Thailand and finally expand to conclude the commonality and diversity of traditional houses in Southeast Asia in the future.

• Journal of the Korea Society of Computer and Information
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• v.23 no.6
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• pp.23-32
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• 2018

This study explore the possibility of water sports activities as juvenile pleasure, and was performed for the purpose of looking for ways to develop it. In order to do this, I was conducted interviews with the water sports of seven experts to achieve. As the development direction of the main contents of the interview is youth leisure activity, specific details are expected to be young and effect change through the application of Maritime youth sports programs, potential problems, and direction of water sports youth development program, primarily part of the effort needed and so on is composed of. Interview data was categorized as a job that has undergone a similar topic by phenomenological analysis of Giorgi. Findings water sports activities despite having plenty of potential to contribute to the holistic growth of the youth, the conclusion was drawn that various constraints exist. Management of water sports agencies as a way to solve this problem, provided supervision, property development program for adolescents and youth professional guidance workforce, youth water sports activities such as infrastructure presents a proposal.