• Archives of Reconstructive Microsurgery
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• 제25권2호
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• pp.72-74
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• 2016

The keystone flap is a fascia-based island flap with two conjoined V-Y flaps. Here, we report a case of successful treatment of a trochanter pressure sore patient with the traditional keystone flap. A 50-year-old male patient visited our department with a $3{\times}5cm$ pressure sore (grade III) to the left of the greater trochanter that was covered with eschar. Debridement was done and the defect size increased to $5{\times}8cm$ in an elliptical shape. Doppler ultrasound was then used to locate the inferior gluteal artery perforator near the wound. The keystone flap was designed to the medial side. The perforator based keystone island flap covered the defect without resistance. The site remained clean, and no dehiscence, infection, hematoma, or seroma developed. In general, greater trochanter pressure sores are covered with a perforator based propeller flap or fascia lata flap. However, these flaps have the risk of pedicle kinking and require a large operation site. For the first time, we successfully applied the keystone flap to treat a greater trochanter pressure sore patient. Our design was also favorable with the relaxation skin tension lines. We conclude that the keystone flap including a perforator is a reliable option to reconstruct trochanteric pressure sores.

• 한국응급구조학회지
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• 제21권1호
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• pp.45-58
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• 2017

Purpose: This study investigated the health status and health management program of 119 emergency medical technicians (EMTs). Methods: A self-reported questionnaire was completed by 794 EMTs in two cities from November 15 to December 20, 2016. The questionnaire collected the general characteristics of the subjects (10 items) and health-related information from 119 EMTs (14 items). Data were analyzed by using SPSS 23.0. Results: The mean value for the general health status of the 119 EMTs was 2.68. The general health status was lower for female 119 EMTs, older 119 EMTs, and married 119 EMTs; it was higher for 119 EMTs with more than 5 years of experience and for 119 EMTs with diseases. The mean value for work-related fatigue of the 119 EMTs was 3.26. This value was higher for female 119 EMTs (p<.05). 119 EMTs with more than 2 years of experience, and 119 EMTs with diseases (p<.01). The correlation between health program participation and general health status was significantly positive (r=.271), whereas the correlation between health program participation and work-related fatigue was significantly negative (r=-.375). The correlation between health program participation and program satisfaction was significantly positive (r=-.770). Conclusion: It is important to develop health management program for 119 EMTs and to offer them at all times. Moreover, the health status of 119 EMTs can be increased through improvements to working environments.

• 대한디지털의료영상학회논문지
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• 제3권1호
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• pp.52-58
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• 1997

Before entering 21st Century, modern medical science is requiring more precise display which is highly estimated in diagnostic value as radial science technology is achieving sharp development. And it is also trying to contribute to improve national health and to offer better service by reducing radial exposure. General projection and Fluoroscopy which are most difficult to be displayed in digital tend to change their way ; from analog to digital with development of Electronic Engineering and Computer Technology, Introducing to CR system in 1994, SMC have displayed General projection and Fluoroscopy 100% in digital using CR system. This study searched differences between repeat rate, repeat type in the exam using Film/Screen and those in the exam using CR system. According to the analysis of repeat types and repeat rate of Film which was reused by using CR system in general projection room and Fluoroscopy room of SMC, we found that total 192,813 films were used and 2,097 films, 1.09% of total were reused. However, actual repeat covers 0.76% to 1,461 sheets with the exception of 636sheets. As above, display process using CR system is 0.76% much lower than general repeat rate 2$\sim$4% of Film/Screen exam. Besides decreased under/over exposure, it is appeared that position failure rate in repeat rate 0.76% covers relatively high 31%. Noticing that repeat caused unskilled devices handing was found many times, sufficient understanding seems to be required to reduce repeat.

• 대한감각통합치료학회지
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• 제4권1호
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• pp.57-64
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• 2006

Objective : The purpose of this paper was to suggest a model of the home-visiting occupational therapy for the child with sensory integrative dysfunction through parent's satisfaction of volunteer activity to home-visiting occupational therapy. Method : A questionnaire survey were conducted to investigate the satisfaction on after of volunteer activity to home-visiting occupational therapy for the child with sensory integrative dysfunction. The 12 parents agreed on this service that students of department of occupational therapy visited at home 2 or 3times during the 16weeks. Results : Parents responded that satisfaction was seen orderly agreed(66%), very agreed (34%) in the convenient portion of service process, orderly agreed(50%), very agreed(42%), moderate agreed(8%) in the therapeutic technique and professionalism, very agreed(58%), agreed(42%) in the portion of general satisfaction. Correlation was not between satisfaction of convenient portion and related questions, but in the student attitude and the therapeutic technique, professionalism and related question was related to all question except a family treatment access method portion. Conclusions : It will be able to present the model of the home-visiting service in various occupational therapy field above the results and home-visiting occupational therapy service system must be introduced with the hygienic medical treatment delivery system through the deepening research.

• 산업경영시스템학회지
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• 제35권2호
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• pp.189-195
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• 2012

Parcel delivery services are a bit different from general vehicle routing problems since the services require a deliver's walking time to give the parcel to the customer. This time takes more than 1/4 of total delivery time, but it is ignored for the convenience of algorithm design in general. The walking time is too big to be ignored if we need to estimate necessary delivery time precisely as much as possible, or to design a heuristic with varying vehicle moving speeds in metropolitan area. For these reasons, the walking times are surveyed and analyzed to use on the design of VRP heuristic for parcel delivery services in this research.

• 경영과학
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• 제9권1호
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• pp.3-15
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• 1992

In this paper, we study a manufacturing system of serial stages with general service times, in which the production of each stage and the coordination of stages are controlled by Kanban discipline. This Kanban discipline is modeled as a Discrete Event Dynamic System and a system of recursive equations is applied to study the dynamics of the system. The recursive relationship enables us to compare this Kanban discipline with the other blocking disciplines such as transfer blocking, service blocking, block-and-hold b, and block-and-hold K, and the Kanban is shown to be superior to the other disciplines in terms of makespan and throughput. As a special case, two stages Kanban system is modeled as $C_2/C_2/1/N$ queueing system, and a recursive algorithm is developed to calculate the system performance. In optimizing the system performance, the stochastic optimization approach of Robbins-Monro is employed via perturbation analysis, the way to estimate the stochastic partial derivative based on only one sample trajectory of the system, and the required commuting condition is verified. Then the stochastic convexity result is established to provide second-order optimality condition for this parametric optimization problem.

• 한국도로학회논문집
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• 제19권1호
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• pp.29-36
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• 2017

PURPOSES : This study mechanically analyzed the performance of road substructures with focus on infiltration trenches of pavement substructures. METHODS : Water contents and response times for precipitation of pavement substructures were investigated via sensors buried near the infiltration trench to measure water contents. RESULTS : The results of the water contents of pavement systems constructed with an infiltration trench yield levels that were slightly increased by approximately 2% compared to those measured from general pavement systems. This water content difference of 2% resulted in a decrease in service life of less than two years. CONCLUSIONS : Service life reduction due to an infiltration trench is minimal, particularly when the trench is installed with proper caution.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2004년도 추계 학술발표회 제16권2호
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• pp.821-824
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• 2004

For nuclear concrete structures on the coast, the prevention and management against salt damage is needed because they are being under the influence of the sea water at all times. In general, the deterioration of the concrete is generated in concrete surface firstly and then extended into concrete gradually as its service life increases. Therefore, the protective layer on the concrete surface is needed to establish and manage the durability of concrete. To enhance the durability performance of the existing and new concrete, the development and application of a high-performance penetration sealer is needed. The sealer has to have the functions that are able to prevent the attack of the moisture, carbon dioxide, and harmful substance from the outside. Therefore, the aim of this study is to development of a sealer for the long service-life and waterproof performance of a nuclear concrete structures.

• Journal of applied mathematics & informatics
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• 제30권5_6호
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• pp.749-757
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• 2012

We consider the M/PH,G/1 queue with two classes of customers in which class-1 customers have deterministic impatience time and have preemptive priority over class-2 customers who are assumed to be infinitely patient. The service times of class-1 and class-2 customers have a phase-type distribution and a general distribution, respectively. We obtain performance measures of class-2 customers such as the queue length distribution, the waiting time distribution and the sojourn time distribution, by analyzing the busy period of class-1 customers. We also compute the moments of the queue length and the waiting and sojourn times.

• 경영과정보연구
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• 제35권1호
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• pp.189-206
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• 2016

2014년도 회계감사보고서부터 외감법의 개정에 따라 감사보고서에 관한 7조의 2의 외부감사 참여인원 수, 감사내용 및 소요시간 등 외부감사 실시내용을 적은 서류를 첨부하도록 되었다. 본 연구에서는 개정된 외부감사 실시내용을 반영하여 정부출연기관의 용역예정원가계산에 의하여 감사보수를 산정한다. 본 연구에서는 대상기업(전기 적정의견, 직전년도 자산총액 1,000억원, 제조업, 사전의 의뢰인 수임에서 내부통제위험 및 유의적인 감사위험이 없는 것으로 가정한 상장기업)을 국가계약법의 용역원가계산 체계에 따라 인건비, 경비, 일반관리비, 이윤의 4가지 비목을 합계하여 감사보수를 산출한다. 그리고 회계감사의 참여자와 감사투입시간을 확인하기 위하여 Big-4 회계법인에 예정원가 산정 대상기업에 대한 견적을 의뢰하여 계정된 외부감사 실시내용을 적은 서류에 따라 수집한 결과를 이용하였다. 인건비는 2014년 학술연구용역비 인건비기준단가의 참여율 150% 적용, 경비는 한국은행의 기업경영분석(2013년)의 회계법인등의 평균을 사용, 일반관리비는 국가를 당사자로 하는 계약에 관한 법률 시행규칙 7조1항 용역업의 일반관리비율 5%를 적용, 이윤은 국가를 당사자로 하는 계약에 관한 법률 시행규칙 7조2항 용역업의 이윤율 10%가 적용되었다. 이를 적용한 예정원가 계산에 의한 감사보수는 50,617,769원이 산출되었다. 본 연구의 결과가 최적의 적정감사보수는 아니다 할지라도 기준이 없는 기업의 감사보수를 비교할 수 있는 기본 척도로 사용 할 수 있을 것이다. 그리고 이러한 외감법의 개정은 이전의 총 투입 감사시간만을 공시한 것보다 감사인의 독립성과 회계제도의 투명성을 제고할 수 있을 것이다.