• Archives of Reconstructive Microsurgery
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• v.25 no.2
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• pp.37-42
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• 2016

Purpose: Soft tissue coverage of the distal leg and ankle region represents a surgical challenge. Beside various local and free flaps, the perforator flap has recently been replaced as a reconstructive choice because of its functional and aesthetic superiority. Although posterior tibial artery perforator flap (PTAPF) has been reported less often than peroneal artery perforator flap, it also provides a reliable surgical option in small to moderate sized defects especially around the medial malleolar region. Materials and Methods: Seven consecutive patients with soft tissue defect in the ankle and foot region were enrolled. After Doppler tracing along the posterior tibial artery, the PTAPF was elevated from the adjacent tissue. The average size of the flap was $28.08{\pm}9.31cm^2$ (range, 14.25 to $37.84cm^2$). The elevated flap was acutely rotated or advanced. Results: Six flaps survived completely but one flap showed partial necrosis because of overprediction of the perforasome. No donor site complications were observed during the follow-up period and all seven patients were satisfied with the final results. Conclusion: For a small to medium-sized defect in the lower leg, we conducted the close-by islanded PTAPF using a single proper adjacent perforator. Considering the weak point of the conventional propeller flap, this technique yields much better aesthetic results as a simple and reliable technique especially for defects of the medial malleolar region.

• Journal of Service Research and Studies
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• v.1 no.1
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• pp.49-60
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• 2011

Recently, with the growing of social network sites, people's choice is also getting more and more. So the notion of loyalty has become an important construct within the Social Network framework because of member is easy switching on the social networking sites. Despite the increasing importance of social network sites loyalty question, there's very little research in this area. In electronic commerce, the website loyalty development process is based on both website satisfaction and website trust toward the net-enabled business. But how to target the members with high or low loyalty in the social network sites is still a question. In this paper we propose one improved RFM model to evaluate the member loyalty to find the potential members for improving the service quality of the social network site. In addition, an empirical case study is performed to demonstrate how this procedure works. Moreover, further applications of this research are provided for improved social network sites experiences and how to use the model to practice.

• The Korean Journal of Pain
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• v.30 no.2
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• pp.86-92
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• 2017

Osteoblasts, originating from mesenchymal cells, make the receptor activator of the nuclear factor kappa B ligand (RANKL) and osteoprotegerin (OPG) in order to control differentiation of activated osteoclasts, originating from hematopoietic stem cells. When the RANKL binds to the RANK of the pre-osteoclasts or mature osteoclasts, bone resorption increases. On the contrary, when OPG binds to the RANK, bone resorption decreases. Denosumab (AMG 162), like OPG (a decoy receptor), binds to the RANKL, and reduces binding between the RANK and the RANKL resulting in inhibition of osteoclastogenesis and reduction of bone resorption. Bisphosphonates (BPs), which bind to the bone mineral and occupy the site of resorption performed by activated osteoclasts, are still the drugs of choice to prevent and treat osteoporosis. The merits of denosumab are reversibility targeting the RANKL, lack of adverse gastrointestinal events, improved adherence due to convenient biannual subcutaneous administration, and potential use with impaired renal function. The known adverse reactions are musculoskeletal pain, increased infections with adverse dermatologic reactions, osteonecrosis of the jaw, hypersensitivity reaction, and hypocalcemia. Treatment with 60 mg of denosumab reduces the bone resorption marker, serum type 1 C-telopeptide, by 3 days, with maximum reduction occurring by 1 month. The mean time to maximum denosumab concentration is 10 days with a mean half-life of 25.4 days. In conclusion, the convenient biannual subcutaneous administration of 60 mg of denosumab can be considered as a first-line treatment for osteoporosis in cases of low compliance with BPs due to gastrointestinal trouble and impaired renal function.

• Journal of The Korean Association of Information Education
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• v.16 no.1
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• pp.143-150
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• 2012

The choice of occupation has a great deal of influences on achievement of self-realization and living a good life in an individual's life. Especially, it is very significant for Elementary school students because they become to aware of career and develop. However, in the present, the career guidance is mainly concentrated in the solitary work, such as an aptitude test and printed materials. The perspective from the student, therefore, needs systematic and efficient system to accumulate activities and result of their various career guidance for individual career-related information. The system to improve elementary school student's career awareness based on e-portfolio has been developed. The developed system can effectively accumulate students' activities and result of their various career guidance and easily grasp their strengths and weaknesses of intelligence based on theory of multiple intelligences. Teacher also can easily grasp their student's talent through all sorts of graphs provided by the web site for career education.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.14 no.1_2
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• pp.105-116
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• 1992

Latissimus dorsi myocutaneous flap is useful for the breast reconstruction, chest wall coverage, free flap transfer, and head and neck area reconstruction, especially in large defect. We have had some experience of 5-pedicled and 1-free latissimus dorsi myocutaneous flap in head and neck area and found many advantages and some problems. The conclusions were as follows : 1. Potentially large flap size enabled us agressive tumor resection and reconstruction. 2. Speedy and easy flap elevation and long vascular pedicles reduced operation time and flap failure. 3. Due to fewer complication and functional loss of doner site, pedicled latissimus dorsi flap was a good choice for large head and neck reconstruction. 4. Because of flap bulkness, thin and small defect was not appropriate for reconstruction.

• Korean Parent-Child Health Journal
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• v.5 no.1
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• pp.38-49
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• 2002

The purpose of this study was to investigate the needs of a mother when getting the information from the child care web sites. The subjects of this study were collected through on-line and off-line and constituted of 157 mothers who had neonates and infancy. All the mothers could use the internet. On-line subjects were 135 mothers who were the members of "Child Rearing" circle of internet portal site, Daum (www.daum.net) and off-line subjects were 22 mothers who visited the pediatric outpatient department. The instrument had 15 items about needs for information of the child care web sites. 12 items were multiple choice-questions and 3 items were open questions. In data analysis, SPSSWIN 10.0 program was utilized for descriptive statistics. The results were as follows. 1. The most useful web content that mothers represented was food and nutrition(24.4%) and the other rated as following order; growth and development(21.1%), supports among parents(16.8%). 2. The most great web problem that mothers represented was depth of content(43 people) and the other rated as following order; objectivity, specialty and reliability of content(29 people), no problems (23 people), too much advertisements(17 people), obligation on member(4 people). 3. Mothers represented the highest information needs about play and education(65 people) and the other rated as following order; nutrition(44 people), managements of common health problems(39 people), experiences of other parents(10 people), child caring methods (38 people), exchanges of things(7 people). 4. Mothers represented the highest consultation needs about common health problem (62 people) and the other rated as following order; growth and activity(60 people), play and education(30 people), nutrition(22 people), child caring methods(9 people).

• The Journal of the Korean bone and joint tumor society
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• v.4 no.1
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• pp.22-29
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• 1998

A limb-sparing operation has a definitive role in the treatment of osteosarcoma in the lower extremity of skeletally-immature patients. After a limb-sparing operation, leg length discrepancy remains as a major disability that should be corrected. This study was designed to suggest methods of tumor resection and proper timing of leg length equalization in skeletally immature osteosarcoma patients. From September 1990 to January 1998, we reviewed eight osteosarcoma patients in an immature skeletal age. There were 4 males and 4 females, and their mean duration of follow-up was 50.37 months (range : 25 to 88 months). Mean skeletal age was 8 years (range : 8 months to 11 years). The patients were classified according to the methods of tumor resection ; intercalary resection in 1 case, transepiphyseal resection in 1, intra-articular resection in 5, and extra-articular resection in 1. The results were as follows ; 1. The leg lengthening was begun when a patient's leg length discrepancy reached 4-5cm. 2. The age of final lengthening with permanent reconstruction was 14 years in males and 12 years in females (about 2 years before skeletal maturity). 3. When reconstruction was performed with a temporary spacer, the site of lengthening Was in the soft tissue, not in bone, and then a permanant reconstruction was done. 4. Reconstruction with a biologic spacer to preserve the joint function was a reasonable method for equalization of leg length. In conclusion, the appropriate choice of reconstructive method and the age at which to correct the leg length discrepancy in a skeletally-immature osteosarcoma patients are important factors for maintaining leg length at full maturity.

• Journal of the Korean Home Economics Association
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• v.36 no.7
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• pp.123-141
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• 1998

본 연구는 미국의 직장근무자와 재택근무자의 비교를 통해, 남성과 여성의 소득차이를 살펴보고 이를 설명하는 요소들에 대해 분석하였다. 본 연구를 위해 설정된 가설은 다음과 같다.: (1) 성별은 직업과 시장노동의 장소를 선택하는데 있어서 유의한 요소이다. (2) 직업 및 시장노동의 장소가 결정된 후에도 성별은 시간당 소득에 영향을 미치는 변수이다. 연구자료로는 Census of Population and Housing, 1990 [United States]: Public Use Microdata Sample: 1/10,000 Sample이 이용되었으며, 16세 이상, 65세 이하의 응답자로 일주일에 적어도 한 시간 이상 일하는 근로자를 중심으로 하여 7,272명이 연구 대상으로 고려되었다. 직업 및 시장노동의 장소에 대한 선택에서 성별의 영향을 살펴보기 위해 판별분석이 행해졌으며, 분석 결과 교육수준, 연령, 인종, 남녀의 수, 주택구조와 함께 성별이 유의한 요소임이 밝혀졌다. 직업과 시장노동의 장소가 결정된 후 성별이 시간당 소득에 미치는 영향을 알아보기 위해 전체표본과 6개의 직업범주에 따라 회귀분석이 실시되었다. 전체표본을 대상으로 한 회귀분석의 결과, 시간당 소득을 예측하는데 있어서 성별은 유의하지 않은 것으로 나타났으나, 6개의 직업범주에 따라 시간당 소득을 추정한 결과, 성별은 모든 직업범주에서 유의한 것으로 나타났다. 그러나 재택근무자가 되는 것은 시간당 소득을 규정하는데 있어서 유의한 변수가 아닌 것으로 나타났다. 이것은 특정 직업 내에서 시장노동의 장소보다는 성별이 재택근무자에 있어서 소득의 차이를 설명하는데 중요한 요소임을 암시하고 있다. 본 연구에서 사용된 자료는 직업 및 시장노동의 장소에 대한 결정이나 소득에 영향을 미칠 수 있는 변수들에 대한 충분한 정보를 갖고 있지 않고, 또한 재택근무자의 표본수가 너무 적었기 때문에 일부 변수들은 직업의 선택이나 소득을 예측하기 위한 요소들로 포함될 수 없었다. 따라서 후속연구에서는 이를 보완해야 할 것이며, 최근 들어 우리 나라에서도 재택근무에 대한 관심이 대두되고 있으나 아직 개념정의나 그 중요성과 가치, 그리고 실태 파악과 같은 연구가 활발히 이루어지지 못하고 있으므로 이에 대한 심층적인 연구가 행해져야 할 것이다.

• Journal of Information Processing Systems
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• v.10 no.1
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• pp.145-161
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• 2014

Recently, many large organizations have multiple data sources (MDS') distributed over different branches of an interstate company. Local patterns analysis has become an effective strategy for MDS mining in national and international organizations. It consists of mining different datasets in order to obtain frequent patterns, which are forwarded to a centralized place for global pattern analysis. Various synthesizing models [2,3,4,5,6,7,8,26] have been proposed to build global patterns from the forwarded patterns. It is desired that the synthesized rules from such forwarded patterns must closely match with the mono-mining results (i.e., the results that would be obtained if all of the databases are put together and mining has been done). When the pattern is present in the site, but fails to satisfy the minimum support threshold value, it is not allowed to take part in the pattern synthesizing process. Therefore, this process can lose some interesting patterns, which can help the decider to make the right decision. In such situations we propose the application of a probabilistic model in the synthesizing process. An adequate choice for a probabilistic model can improve the quality of patterns that have been discovered. In this paper, we perform a comprehensive study on various probabilistic models that can be applied in the synthesizing process and we choose and improve one of them that works to ameliorate the synthesizing results. Finally, some experiments are presented in public database in order to improve the efficiency of our proposed synthesizing method.

• Archives of Plastic Surgery
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• v.45 no.1
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• pp.69-73
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• 2018

Background Temporal hollowing is inevitable after decompressive craniectomy. This complication affects self-perception and quality of life, and various techniques and materials have therefore been used to restore patients' confidence. Autologous fat grafting in postoperative scar tissue has been considered challenging because of the hostile tissue environment. However, in this study, we demonstrate that autologous fat grafting can be a simple and safe treatment of choice, even for postoperative depressed temporal scar tissue. Methods Autologous fat grafting was performed in 13 patients from 2011 to 2016. Fat was harvested according to Coleman's strategy, using a tumescent technique. Patient-reported outcomes were collected preoperatively and at 1-month and 1-year follow-ups. Photographs were taken at each visit. Results The thighs were the donor site in all cases for the first procedure. The median final volume of harvested fat was 29.4 mL (interquartile range [IQR], 24.0-32.8 mL). The median final volume of fat transferred into the temporal area was 4.9 mL on the right side (IQR, 2.5-7.1 mL) and 4.6 mL on the left side (IQR, 3.7-5.9 mL). There were no major complications. The patient-reported outcomes showed significantly improved self-perceptions at 1 month and at 1 year. Conclusions Despite concerns about the survival of grafted fat in scar tissue, we advise autologous fat grafting for patients with temporal hollowing resulting from a previous craniectomy.