• 한국시뮬레이션학회논문지
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• 제23권3호
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• pp.1-9
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• 2014

전통적인 워크플로우 시간분석은 단위작업을 독립적인 M/M/1 대기행렬모형에 적용하여 수행해왔다. M/M/1 시스템 성능척도의 일반해들을 활용하면 여러 가지 분석이 가능해진다. 특히 워크플로우 시스템의 AND 구조를 분석함에 있어 M/M/1 시스템 성능척도를 활용하면 그 체재시간에 대한 분석이 가능하다. 그러나 실질적인 AND 구조를 정확히 묘사하기 위해서는 각각의 M/M/1 시스템이 독립이라는 가정이 없어야 한다. 본 연구는 이러한 한계를 극복하기 위해 한 업무에 대한 모든 단위작업이 동시에 시작하는 상황으로 가정한다. 이 가정 하에서는 M/G/1 시스템의 성능척도를 이용하여 이론적 분석이 가능해진다. 또한 시뮬레이션을 이용하여 실질적인 AND 구조를 정확히 묘사할 수 있는 방법론을 소개한다. 마지막으로 가상의 시스템을 구성하여 이론적인 해와 시뮬레이션 결과들을 수록함으로써 제안된 방법론들을 검증한다. 본 연구에서 사용된 주요 시스템 성능척도는 평균대기시간과 평균체재시간이다.

• Archives of Reconstructive Microsurgery
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• 제12권1호
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• pp.38-43
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• 2003

Purpose : Various free flaps and pedicled island flaps are effective for reconstruction of soft tissue defect developed after tumor excision. We want to know the advantage of dorsalis pedis island flap for reconstruction of soft tissue defect caused by soft tissue tumor excision. Materials and Methods : Between 1992 and 2002, we performed 4 dorsalis pedis island flap procedure for reconstruction of soft tissue defect of lower limb developed after soft tissue tumor excision. Average age was 54.7 years old $(40{\sim}68)$, and male 2 cases, female 2 cases. The kinds and number of soft tissue tumors were 2 squamous cell carcinoma and 2 malignant melanoma. The procedures that we performed were all dorsalis pedis island flap. The analysis for the result of treatment was retrospectively accessed by physical examination and questionnaire for whether the change of symptom after operation, range of adjacent joint motion. Also we reviewed associated complication after operative treatment. Results : All dorsalis pedis island flaps were alive. There is no problem for activity of daily living, no skin necrosis and no limitation of motion of adjacent joint. In 1 case of them, the patients died of distant metastasis. Conclusion: Dorsalis pedis island flap procedure as a pedicled island flap procedure is very effective and easy operative procedure for reconstruction of soft tissue defect of lower limb developed after tumor excision compared to free flap procedure because there is no need for microvascular surgery, we can obtain relatively large flap and the lesion and flap donor site locate in the same limb.

• Plant Biotechnology Reports
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• 제5권1호
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• pp.53-60
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• 2011

Artemisinin is effective against both chloroquine-resistant and -sensitive strains of Plasmodium species. However, the low yield of artemisinin from cultivated and wild plants is a serious limitation to the commercialization of this drug. Optimization of artemisinin yield either in vivo or in vitro is therefore highly desirable. To this end, we have overexpressed the 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase (HMGR) gene (hmgr) from Catharanthus roseus L. in Artemisia annua L. and analyzed its influence on artemisinin content. PCR and Southern blot analyses revealed that the transgenic plants showed stable integration of the foreign hmgr gene. The reverse transcriptase-PCR results suggested that the hmgr was expressed at the transcriptional level in transgenic lines of Artemisia annua L., while the high-performance liquid chromatography analysis showed that artemisinin content was significantly increased in a number of the transgenic lines. Artemisinin content in one of the A. annua transgenic lines was 38.9% higher than that in non-transgenic plants, and HMGR enzyme activity in transgenic A. annua L. was also higher than that in the non-transgenic lines.

• 대한장애인치과학회지
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• 제7권1호
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• pp.15-20
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• 2011

뇌병변장애인은 뇌성마비, 외상성 뇌손상, 뇌졸중 등 뇌의 기질적 병변에 기인한 신체적 장애로 보행 또는 일상생활의 동작 등에 상당한 제한을 받는 사람으로 정의된다. 최근에 뇌병변 장애아동의 DMFT는 비 장애아동과 유사하거나 낮다는 연구가 있었다. 그러나, 본 증례는 중증유아기우식증이 나타난 뇌병변장애 1급 아동들을 치료한 것으로, 아동들의 공통점을 통해 중증유아기우식 우식증의 특별한 원인을 찾고자 하였다. 뇌병변으로 인한 일차적인 운동장애와 이차적인 치과치료를 받기 어려울 정도의 쇠약함, 잦은 입원, 당분이 많은 음식과 약물의 섭취, 구강위생관리 소홀, 늦은 치과 내원, 협조도 저하 등이 우식 유발인자를 높이고, 우식 예방인자를 낮추어 치아우식증을 유발할 수 있는 것으로 사료되었다. 뇌병변 장애아동을 치료할 때, 치과의사는 개인적인 우식 위험도 평가를 통해 철저한 우식 예방프로그램을 만들고, 부모와 의학적 주치의는 구강관리의 중요성을 인식하여 조기 치과 내원 및 홈케어에 신경을 써야 할 것이다.

• 전기학회논문지
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• 제62권12호
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• pp.1744-1749
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• 2013

Acoustic feedback is perceived as whistling or howling, which is a major complaint of hearing-aids users. Acoustic feedback cancellation is important in hearing-aids because acoustic feedback degrades performance of the hearing aid device by reducing maximum insertion gain. Adaptive systems for estimate acoustic feedback path and feedback suppression algorithms have been proposed in order to solve this problem. A typical feedback cancellation algorithm is LMS(least mean squares) because of its computational efficiency. However it has problem of convergence performance in high correlated input signal. In this paper, we propose a new variable step-size normalized LMS(least mean squares) algorithm using VAD(voice activity detection) to overcome the limitation of the LMS algorithm. The VAD algorithm is GSAP(global speech absence probability) and the feedback cancellation algorithm is normalized LMS. The proposed algorithm applies different step-size between voice and non-voice using VAD, for high stability, fast convergence speed and low misalignment when correlated inputs, such as speech. The result of simulation with white noise mixed speech signal, the proposed algorithm shows high performance then traditional algorithm in terms of stability, convergence speed and misalignment.

• 한국생활과학회지
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• 제19권5호
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• pp.775-794
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• 2010

This study is to provided a basic model to encourage environment and outdoor play programs. The study was based on the analyses of actual activities performed in two child care centers in Daejeon area and the way in which the programs for outdoor play were related to the environment of the centers. Data were collected through 'The Daily Report of the Outdoor Play Programs: Plan and Evaluation' paper conducted at each center performed from 2007 to 2009. Following Mockwha Choi et al., (2007), the play observed and described by teachers was analyzed to classify play areas and play activities within each area. The places, equipment and, playthings using in each play period were also examined as well as the limitation and inspiration caused by the environment. The results of the study are as follows: 1) Empty and unfilled space tended to generate more types of non-structural play and role-pretend play 2)Adventurous play was rarely observed. More thoughtfully designed physical environments need to be provided for children to experience challenge and adventure through physical activities 3) Outdoor play environment should be suitable for the overall developments of infants and toddlers depending on their activities. A child care specialist should support the design such environment 4) Naturally, the programs of outdoor play will not be identical for all child care centers. Rather, they should go along with the programmatic characters and environmental attributes of each center. Therefore the awareness of teachers and parents as to the importance of must realize of outdoor play should be further increased.

• 복식
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• 제52권7호
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• pp.103-121
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• 2002

This study intended to analyze the transition of design of Korean soccer player's uniform according to development of the society and changes in formative elements, and examine features inside them by considering designs of soccer player's uniform by ages ranging from the introduction of soccer up to now. Results of the study are summed up below. First, as a result of analyzing designs of soccer player's uniforms from 1920 to 2002 Korea-Japan WorldCup based on formative elements of the style of dress. \circled1 it is shown that basic shape has been kept but changes in only color. cutting, trimming, logo and symbol have existed. \circled2 Colors of the uniforms have been different according to ages but red, blue and white colors have been used most and sometimes black was employed. so it is known that colors in the Korean national emblem have been all used. \circled3 In the beginning of the uniform there was a limitation in its design due to absence of functional materials but now highly-sensitive textile products and highly-functional textile materials guaranteeing optimal condition and highest activity of a soccer player have been utilized in various ways. \circled4 It is known that symbols modelling the image of Korea have been used in diverse ways but effected much by directions toward images pursued by designers of sponsors. Second, the meanings represented by designs of the uniforms are classified into a degree of symbolizing Korea, tradition, superiority and dynamics. That is to say, \circled1as colors and symbols coming from the emblem have been used in the uniforms. they have symbolized one nation and possessed the meaning representing even Korean national spirit. \circled2As traditional colouring and symbols have been used in the uniforms, they have shown the Korean sense of a beauty. \circled3 Colors, tones and designs overwhelming the mood of play have been used in the uniforms, so that they have played a role in making players of other team flinch mentally and making Korean players gain an advantage over them. \circled4 Thanks to strong symbols or comparative effects of colors. they have shown the dynamics representing power and energy.

• 대한한방소아과학회지
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• 제24권1호
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• pp.57-64
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• 2010

Objectives This study is to examine case that has an significant result on treating Polyarticular Type Juvenile Idiopathic Arthritis(JIA) the patient who did not response to DMARDs and NSAIDs with oriental medicine. JIA is the most common form of persistent arthritis in children before age 16. The symptoms of JIA is pain and edema of joints, fever, lethargy, reduced physical activity, and poor appetite. But the symptoms vary. Methods The patient felt pain and had limitation of mobility on his joints, but the DMARDs and NSAIDs were not effective. Therefore, he was treated with oriental medicine and withdrew from DMARDs and NSAIDs. The patient took DMARDs and NSAIDs from May 2007 to November 2008(He did not took DMARDs and NSAIDs from December 2007 to June 2008), and took oriental medicine from November 2008 until now. Results The patient's pain and limited mobility on his joints, edema, morning stiffness, fatigue was gone, and could maintain the condition. He doesn't have DMARDs or any other western medicine anymore. Conclusions This study shows that a Polyarticular Type Juvenile Idiopathic Arthritis patient who had ineffective response to DMARDs and NSAIDs can reach to the clinical remission by oriental medicine treatment. His morning stiffness, fatigue, pain of joints, edema was gone and ESR was in normal range with Oriental medicine treatment.

• 대한족부족관절학회지
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• 제15권2호
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• pp.72-78
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• 2011

Purpose: The purpose of this study is to compare the clinical outcome of excision versus osteosynthesis of type II accessory navicular performed by a single surgeon. Materials and Methods: Cases of 14 feet treated with excision and 13 feet by osteosynthesis for type II accessory navicular of 25 patients from 2002 to 2009 were included in this study. Radiological measurements and American Orthopaedic Foot and Ankle Society (AOFAS) midfoot scale was evaluated. Results: AOFAS midfoot scale of both excision and osteosynthesis groups at last follow-up showed improvement from pre-operation. However, there was no statistical difference in AOFAS midfoot scale and subjective satisfaction between the two groups at last follow-up. In detail of AOFAS midfoot scale, pain and footwear requirements showed statistically favorable results for the excision group, while activity limitation and support showed statistically favorable results for the osteosynthesis group. Subjective recovery time returning to daily activities and starting rehabilitation exercise were 14.6 weeks in the excision group and 13.7 weeks in the osteosynthesis group (p=0.025, Mann-Whitney). Suture anchor loosening was observed in one case in the excision group and non-union in two cases in the osteosynthesis group. Conclusion: Both excision and osteosynthesis are favorable surgical methods, but each method has advantages and possible complications such as suture anchor loosening or non-union. Surgeon's preference, patient's chief complaint, specific needs of patient after the operation and consideration of the size of accessory navicular can be a criteria to consider when selecting a surgical method.

• 의료법학
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• 제15권2호
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• pp.285-316
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• 2014

As the number of medical disputes regarding nurses has increased after medical disputes have increase, there is a need for a study on it. However, the legal relationship between nurses and patients has not yet been analyzed. Recently, the role and function of nurses are expanded according to the development of the science of nursing; moreover their activity and limitation of responsibility are also expanded. For this reason, the medical disputes regarding nurses have been increasing. However, the majority of these kind of dispute are just passed over because their practice is usually considered to be a mere action to assist doctor's role. In addition, nurse practice is not a secondary action of doctor's role, but forms part of a medical treatment. Of course, nurses handle many secondary tasks after doctors finish their medical treatment. But this is only part of the whole tasks of nurses. Furthermore, the general details of their medical treatment are not different from those of doctors because they also belong to the medical service personnel. Considering these features of nurse and the medical condition in South Korea, their task is becoming increasingly developed and specialized and they are also establishing their own field. With this stream of times, there is a growing interest in enacting a Nursing Practice Act, in other words, the independent law on nurse for the sake of patient safety and national health promotion. Then, their responsibility will distinctly be expanded as much more. That is, the time that nurses practice their medical care by following doctors' order and also pass over their responsibility to doctors is closed. Thus, this study examines the features and responsibilities of nursing practice, and discusses an institutional framework to efficiently cope with the legal disputes between nurses and patients. It aims to throw light on the decision making on nurse-patient disputes in future.