• Maxillofacial Plastic and Reconstructive Surgery
• /
• v.13 no.1
• /
• pp.104-109
• /
• 1991

Loss of mandibular continuity due to neoplasm, trauma, or infection results in major esthetic and biologic compromise. The use of costochondral grafts for reconstruction of temporomandibular joint, described first by Gillies in 1920, has been accepted as a suitable method for replacing the mandibular condyle, especially in growing children. Autogenous iliac bone graft has been a satisfactory source of mandibular reconstruction since Sykoffs report in 1900. Autogenous bone grafts from the posterior aspects of the ilium provide large amount of PMCB with acceptable donor site morbidity. In timing of reconstruction, initial disease, age, medical history, growth and development, esthetic and psychologic factors should be considered. We present a case of osteosarcoma in the mandible that was treated by a hemimandibulectomy and the defect was reconstructed 20 months later with composite method of costochondral and posterior iliac bone graft.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• v.31 no.6
• /
• pp.532-535
• /
• 2005

The objective of this study is assessment of the efficacy of upper joint space arthrocentesis on prevention of TMJ injury from patient with mantibular fractures. We divided the patients into two groups, one which consist of 24 patients who are taken arthrocentesis while open reduction of mandibular fracture, the other which consist of 27 patients without arthrocentesis from Jan 1999 to Dec 2001. We measured maximum mouth opening, excursive movement range respectively one week, one month, three months later after operation. The patients were instructed to mark on 10 cm VAS for evaluation of TMJ pain during resting, mouth opening, and mastication. We evaluated the signs and symptoms of temporomandibular disorder clinically and radiographically 6 months later. The result of this study is that there is a reduction of pain and increase of range of mandibular motion in both groups but in patients with arthrocentesis there is relatively reduction of pain and increase of range of mandibular motion compared with control group. On the points of 6 months later, temporomandibular disorder occurred in 4 patients (16.7%) in group with arthrocentesis and 13 patients (47.1%) in control group. In conclusion, we think that supplemental therapy such as arthrocentesis is helpful for the recovery of jaw function and prevention of the development of temporomandibular disorder after facial trauma.

• Journal of IKEEE
• /
• v.14 no.2
• /
• pp.58-63
• /
• 2010

In this paper, design and implementation of multi-modular robots of similar structure to the arthropods for rock path driving. Each module corresponds to an arthropod joint, which has an independent power supply and control equipment including drive and short-range Zigbee wireless communication that were implemented. On various directions and paths each module has the same driving direction and each module is controlled to operate or not by wireless communication. Depending on path condition, each module calculate the speed and torque and depending on the slope of a rough path, the number of active modules can be changed for the efficient driving on a variety of roads conditions. Experimental driving through rough road model, variable multi-module robot is implemented.

• Journal of the Microelectronics and Packaging Society
• /
• v.26 no.4
• /
• pp.89-94
• /
• 2019

Glass base sealant is required as a ceramic-ceramic joining material between α-alumina insulation cap and β-alumina electrolyte tube in the development of NaS battery cell package for electrical energy storage system. The fabrication of glass frit by thermal quenching method, phase analysis, particle size analysis, coefficient of thermal expansion and surface roughness according to the glass compositions were analyzed for the fabrication of glass sealing paste for ceramic-ceramic joining. Also, a new evaluation method of the adhesion strength of glass sealant at the small area in ceramic-ceramic joining component was proposed using conventional Dage bond tester that was used to measure the adhesion of solder ball joint.

• Journal of Korean Association for Spatial Structures
• /
• v.7 no.1 s.23
• /
• pp.71-78
• /
• 2007

Stainless steel is very famous for using of industrials structure and joint elements. Stainless steel wire drawing is one of the most ancient crafts. But there's not any standard size of tapered die during tile drawing. This paper was studied die angle and dimension of whole die by using AFDEX drawing simulator. Stress, metal flow and strain rate was analyzed by AFDEX tools during the wire drawing. So optimum data of during dies was taken from them. Simulation data was correspond with experimental data. The results of the optimum dies are shown that (1) Reduction angle is $13.8^{\circ}$ (2) Bark relief angle is $20^{\circ}$ (3) Bearing length is 0.7975mm (4) Bearing dia is 0.2393mm The research of the optimum result when the make dies is connected an enterprise. After researching, I hope that indirection effect creation make development situation of the manufactural technical, practical application of the other die size by the detail data, utility factor and economical efficiency.

• Journal of Convergence for Information Technology
• /
• v.7 no.4
• /
• pp.39-43
• /
• 2017

The purpose of this study was to investigate of effect of medial & inferior gliding of patella using non-elastic taping on muscle activation of vastus medialis & vastus lateralis during sit to st&ing. As a result of measure, it was confirmed that the muscle activity of vastus medialis is higher than total muscle activity when the inferomedial gilding compared to the medial gliding. The medial & downward gliding of patella more stable than medial direction. especially it will be effective on prevent or control of Patellofemoral pain syndrome. In this regard, the development of orthosis & sportswear for inferomedial gliding to patella will be efficiency to maintain healthy the knee joint.

• Convergence Security Journal
• /
• v.11 no.5
• /
• pp.41-51
• /
• 2011

The objective of this study is to generally check the present situation of private security industry by analyzing the current situation of private security industry in Korea so as to find which policy base is reflected to amend law by analyzing the amendment process of private security law in order to suggest policy direction of private security industry in Korea. Viewing through amendment process of private security law, enhancing publicity and enterprise are not judged to form any definite policy base. They are merely interpreted to partially reflect enterprise under the strong base of publicity. Such policy base may cause overall stagnation of private security industry. For sound development of private security industry, it is required to get out of the existing policy direction so as to change policy base to the direction of enhancing enterprise of private security industry. The power of police for instruction and supervision should be largely transferred to Korea Security Association so as to cultivate autonomous purifying function of private security industry. Police should strive to develop policy in the level of joint production of security service.

• Journal of Korean Public Health Nursing
• /
• v.24 no.2
• /
• pp.285-301
• /
• 2010

Purpose: The study was aimed at qualitatively enhancing and promoting a home visiting nursing program established in Korea on July 1, 2008, as part of the Long-Term Care Insurance for the Elderly program. Methods: Structural, procedural and consequential aspects of home visiting nursing care wereclassified on the horizontal axis by applying the standard notions for the evaluation of medical care (Donabedian, 1998). At the same time, the home visiting nursing care service support system and the service provision system weredivided on the vertical axis with reference to the accreditation standards for home visiting nursing care organizations suggested by the Joint Commission on the Accreditation of Healthcare Organizations (JCAHO, 2008). The data were collected from June 4, 2008 to October 27, 2008, and were analyzed using SPSS ver. 15.0. Results: Twenty-two (proposed) standards, centered on the standard elements under the conceptual framework of the study, were developed, and comprised structural aspects (n=10), procedural aspects (n=6) and consequential aspects (n=6). Those criteria and indicators underwent two content validity surveys among groups of home visiting nursing care research and training experts. The research produced 22 proposed standards, 50 proposed criteria and 166 proposed indicators. Conclusion: The home visiting nursing care standards developed pursuant to the Long-Term Care Insurance for the Elderly Act and the applicability of these standards need to be verified by home visiting nurses. These proposed standards should prove useful in developing an assessment tool to encourage the qualitative enhancement of visiting nursing care in Korea.

• Journal of Korea Game Society
• /
• v.13 no.1
• /
• pp.19-30
• /
• 2013

This paper proposes a serious game for rehabilitation training targeting old persons and patients for rehabilitation. The serious game suggested for rehabilitation training provides the whole body movement recognition-based interface using the 3D depth camera. When the user stands before the camera, it distinguishes the user from the background and then recognizes the user's whole body with 15 joints. By analyzing the changes of location and direction of each joint, it recognizes gestures needed for the game. The game contents consist of the games for upper limb training, lower limb training, whole body training, and balance training, and it was realized in both 2D and 3D games. The system suggested in this article works robustly even with the environmental changes using the 3D depth camera. Even with no separate device, the game recognizes the gestures only using the whole body movement, and this enhances the effect of rehabilitation.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• v.2
• /
• pp.3-8
• /
• 2006

The next decade promises drastic improvements and additions to global navigation satellite systems (GNSS). Plans for GPS modernization include a civilian code measurement on the L2 frequency and a new L5 signal at 1176.45 MHz. Current speculations indicate that a fully operational constellation with these improvements could be available by 2013. Simultaneously, the Galileo Joint Undertaking is in the development and validation stages of introducing a parallel GNSS called Galileo. Galileo will also transmit freely available satellite navigation signals on three frequencies and is scheduled to be fully operational as early as 2008. In other words, a dual system receiver (e.g., GPS+GALILEO) for general users can access six civil frequencies transmitted by at least fifty eights navigation satellites in space. The advent of GALILEO and the modernization of GPS raise a lot of attention to the study of the compatibility and interoperability of the two systems. A number of performance analyses have been conducted in a global scale with respect to availability, reliability, accuracy and integrity in different simulated scenarios (such as open sky and urban canyons) for the two systems individually and when integrated. Therefore, the scope of this article aims at providing the technical benefits analysis for Taiwan specifically in terms of the performance indices mentioned above in a local scale, especially in typical urban canyon scenarios. The conclusions gained by this study will be applied by the Land Survey Bureau of Taiwanese as the guideline for developing future GNSS tracking facilities and dual GNSS processing module for precise surveying applications in static and kinematic modes.