• Journal of Korean Foot and Ankle Society
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• v.23 no.4
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• pp.216-219
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• 2019

In clinical practice, recurrent Achilles ruptures have been noted to occurr at the original ruptured site. However, reports of new developed fresh rupture of the Achilles tendon in other sites are is extremely rare. Our report is about one uncommon case of a traumatic calcaneal tuberosity avulsion fracture following augmented repair, which was performed using the Krackow locking loop technique. We performed open reduction and intra-osseous fixation using a suture anchor. This procedure was done through the primary longitudinal incision for the calcaneal avulsion fracture fragment. After 6 months of follow-up, our patient has achieved a complete functional recovery and he can normally perform daily and work-related tasks without pain.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.17 no.3
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• pp.277-282
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• 1995

With the use of antibiotics and improved dental care, osteomyelitis of the jaw is less common these days, But sometimes the management of osteomyelitis is more difficult because of appearance of resistant organisms to antibiotics. Treatment of the steomyelitis are incision and drainage, closed catheter irrigations, sequestrectomy, saucerization, hyperbaric ocygen therapy, and resection with or without bone graft. We experienced advanced osteomyelitis due to delayed treatment of left mandibular angle fracture. He have medical history of pschysoprenia. We decided to treat the patient with open reduction and closed cather irrigation. We achived reconsolidation of mandibular fracture accompanied by osteomyelitis by complete removal of inflammatory tissues, rigid fixation with miniplate and closed catheter irrigation.

• Journal of Korean Dental Science
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• v.10 no.2
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• pp.60-65
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• 2017

Purpose: The purpose of this study is to analyze the clinical features of postoperative maxillary cyst (POMC) according to the patient's medical history of previous sinus operation and symptoms with radiological characteristics. Materials and Methods: The subjects of this study were 41 patients who had been diagnosed with POMC via clinical and histological examination from 2007 to 2016. Result: Thirty-five patients had medical histories of Caldwell-Luc procedures and four patients had maxillary sinus surgery, such as cyst enucleation and open reduction for maxillary bony fractures. From the computed tomography images, 25.6% (11/43) showed multilocular cysts and 74.4% (32/43) showed unilocular lesions. As for the treatment methods, cyst enucleation was conducted on 34 patients, and among them, three were treated previously with marsupialization. Their symptoms included diverse locations of pain and swelling. Conclusion: The clinical features of POMC varied from unilocular to multilocular and the symptoms included pain and swelling.

• Korean Journal of Occupational Health Nursing
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• v.13 no.2
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• pp.140-147
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• 2004

Purpose: The purpose of this study is to identify the types of worksite health promotion programs. Method: Data were collected from the excellent 35 cases chosen at the contest for worksite health promotion held by Korea Occupational Safety and Health Agency. Result: Out of all the health promotion programs, the exercise program recorded 35.0%, the nutrition program 29.4%, the smoking cessation program 28.0%, and the alcohol reduction program 7.6%. The major element of worksite health promotion programs were awareness raising intervention. Behavior change intervention and supportive environment intervention occupied a small portion of the health promotion programs. Evaluation of health promotion programs was made mainly by indicators of health behavior change and clinical symptom. Yet economical indicator was not used at all. Conclusion: Use of various evaluation indicator and development of various interventions including behavior change and supply of supportive environment are required to encourage worksite health promotion program.

• Journal of Korean Association for Spatial Structures
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• v.14 no.2
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• pp.51-58
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• 2014

Meteorological observatories use measuring boards on even ground in open areas to measure the amount of snowfall. However, it is very difficult to evaluate the accurate amount of snowfall because of the effects of the wind. Therefore, this study tried to determine the internal wind flow inside a windbreak fence to identify an area that was not affected by wind in order to measure the snowfall. We performed a computational fluid dynamics analysis, wind tunnel test of the type and height of the windbreak fence, and analyzed the wind flow inside the fence. The results showed that a double windbreak fence was better than a single windbreak fence for reducing the wind velocity. The reduction of the wind velocity was highest in the middle of a windbreak fence with a width of 4 m and a height of 60cm, where the windbreak fences were fixed to the ground.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2004.03a
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• pp.376-379
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• 2004

The purpose of this work is to develop an effective active control system for combustion instabilities of premixed combustors. For the first step, the natural modes of combustion oscillation were investigated for a methane-air premixed combustor and the controls by secondary fuel injection were examined. The main premixed flame is stabilized by a swirler with orifices for secondary injection installed on the central hub. For sensing purposes, a pressure transducer and a chemiluminescence sensor were placed on the appropriate positions. The acoustic characteristics and the source of the oscillation were analyzed by those signals. To test the controllability, two methods of actuations by secondary fuel injection were examined. One is the open loop control and the other is the closed loop control. The comparison of the reduction levels of p $_{rms}$ shows that the closed loop control with a phase-shift injection performs best in this condition.ition.n.

• Nuclear Engineering and Technology
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• v.48 no.1
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• pp.114-128
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• 2016

The development of operational performance indicators is of utmost importance for nuclear power plants, since they measure, track, and trend plant operation. Leading indicators are ideal for reducing the likelihood of consequential events. This paper describes the operational data analysis of the information contained in the Corrective Action Program. The methodology considers human error and organizational factors because of their large contribution to consequential events. The results include a tool developed from the data to be used for the identification, prediction, and reduction of the likelihood of significant consequential events. This tool is based on the resilience curve that was built from the plant's operational data. The stress is described by the number of unresolved condition reports. The strain is represented by the number of preventive maintenance tasks and other periodic work activities (i.e., baseline activities), as well as, closing open corrective actions assigned to different departments to resolve the condition reports (i.e., corrective action workload). Beyond the identified resilience threshold, the stress exceeds the station's ability to operate successfully and there is an increased likelihood that a consequential event will occur. A performance indicator is proposed to reduce the likelihood of consequential events at nuclear power plants.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2002.04a
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• pp.39-43
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• 2002

IMF situation in Korean society in 1997 gave huge shock to all areas, such as politics, economy, and society which were covered by bubble economy. It has passed 4 years since IMF but it is continued to increase of consumer price index and depression of the society. Receiving an order in interior design become more and more tense competition domestically as well as internationally, due to the open of WTO. In order to achieve economic design of low cost-high design which pursues the power of competition in cost and quality, this study investigated specific methods for economic design and suggested the directions for economic design in interior design field. To suggest the directions of future interior design for economic design with the analysis of domestic and international cases for economic design. the following results are showed: According to the analysis of the cases, economic design is accomplished with the use of the materials. Interior designers should consider how they can use materials for economic design. Especially, use of cheap materials gives the reduction of the cost and the effects of differentiation of the spaces more. Therefore, experimentalism and knowledge of materials are needed and they should be more weighted as the method for achieving economic design,

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.8
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• pp.1827-1834
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• 2013

The existing PC-based desktop environment is being changed to a server-based virtual desktop environment due to various advantages such as security, mobility, and upgrade cost reduction. In this paper, a virtual computing lab service system which is applicable to the existing computer lab is designed and implemented using both an open source-based cloud computing platform and hypervisor. In addition, a node power scheduler is proposed in order to reduce power consumption in a server farm. The experimental results show that the power scheduler reduces power consumption considerably over the server farm without the power scheduler.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.2
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• pp.852-857
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• 2011

The shipbuilding industry needs automation and mechanization to solve reduction of skilled workers and labor shortage. Ship manufacturing process is the lack of automation than standardized manufacturing field. In this paper, we design and development an process automation system for hand rail production. Mechanical parts of the cutting process was designed with efficiency, productivity and reliability, CATIA and ANSYS, the stability of the mechanical structure was confirmed. System control using a PCNC controller to provide an open and scalable, and operate using touch-screen display control and monitoring of the system was performed. The automatic system successfully passed the driving test and processing test, and it showed an excellent performance.