• Journal of Korean Neurosurgical Society
• /
• 제40권6호
• /
• pp.476-480
• /
• 2006

Since the authors participated in the editorial committee in October 2001, many dramatic changes have been introduced to the Journal of Korean Neurosurgical Society[JKNS]. The format, the external appearance, the editorial system, and the reviewing process have been transformed with new standpoints to enhance the quality and to raise the level of JKNS. The authors reviewed papers published on JKNS in 2006 with special interest on the changes of JKNS during last five years. In total, 186 articles were published on JKNS in 2006. Because the editorial committee asked two review articles to renowned neurosurgeons, there were 184 peer-reviewed articles. Eighty seven clinical articles, eighty one case reports, seven laboratory investigations, four special articles and five technical reports were published. This distribution changed from the previous year with marginal value of statistical significance [p=0.101]. The ratio of the original articles [laboratory investigations and clinical articles] decreased to 51.1% from 57.5% of 2005 but the difference was not statistically significant [p=0.222]. The number of laboratory investigations significantly decreased to 7 [3.8%] from 19 [10.4%] of 2005 [p=0.014]. Other changes such as number of authors per article, number of institutes which published papers on JKNS have been examined to assess the trend and/or change in characteristics of papers published on JKNS.

• Archives of Plastic Surgery
• /
• 제32권2호
• /
• pp.189-193
• /
• 2005

Reconstruction of calvarial bone defects from congenital anomaly or from bone loss due to traumatic or neoplastic processes remains a significant problem in craniofacial surgery and neurosurgery. To facilitate bone regeneration, there have been many trials such as autologous bone graft or allograft, and the addition of demineralized bone matrix and matrix-derived growth factor. Guided bone regeneration is one of the methods to accelerate bone healing for calvarial bone defects especially in children. Pericranium is one of the most usable structure in bone regeneration. It protects the dura and sinus, and provides mechanical connection between bone fragments. It supplies blood to bone cortex and osteoprogenitor cells and enhances bone regeneration. For maximal effect of pericranium in bone regeneration, authors used pericranium as a flap for covering calvarial defects in surgeries of 11 craniosynostosis patients and achieved satisfactory results: The bone regeneration of original cranial defect in one year after operation was 74.6%(${\pm}8.5%$). This pericranial flap would be made more effectively by individual dissection after subgaleal dissection rather than subperiosteal dissection. In this article, we reviewed the role of pericranium and reported its usefulness as a flap in surgery of craniosynostosis to maximize bone regeneration.

• 정보관리학회지
• /
• 제24권1호
• /
• pp.121-145
• /
• 2007

본 연구는 현재 상업적인 지식거래소를 통해서 유통되고 있는 다양한 유형의 지식콘텐츠들의 저작권 문제를 저작권법에 비추어 분석하고 있다. 지식거래소에 정보를 제공하는 주체는 수많은 개인, 원문DB제공업체, 국가 및 공공기관, 출판사 등 매우 다양하다. 그러나 이러한 정보제공주체와 지식거래소간에 이루어지는 저작물의 상업적인 거래에서 정작 원저작자인 개인 저자들은 빠져있다는 점을 주목할 필요가 있다. 원칙적으로 모든 저작물의 저작권은 원저작자에게 있으며, 원저작자가 저작권 이양 동의서를 통하여 2차적 저작물 생성권 등을 포함한 모든 권리를 양도하지 않는 이상 저작물의 디지털화, 원문DB화 및 지식거래소를 통한 유통 등은 저작권에 위배된다는 결론을 내릴 수 있다.

• 한국의료질향상학회지
• /
• 제5권2호
• /
• pp.296-310
• /
• 1998

Background : Performance evaluation of medical care providers has become more important than before in Korea. Especially in university hospitals, job contents of medical staffs are so complicated that evaluation is not easily performed. In addition, in order that the feedback of evaluation be successful, acceptance of staffs to be evaluated is essential. This study is aimed at the development of items for evaluation and weighting of each item in one university hospital, and clustering departments by different weight given by medical staffs. Methods : Through resource group meeting. performance items were listed up by categories of education, research, medical services, and other activities in and out of the hospital. For each item, all the medical staffs were asked how important they thought, compared with publishing one original article. By factor analysis, the items in each category were grouped into a few subgroups. In turn, cluster analysis was done for the purpose of grouping departments by priority the medical staffs gave. Results and Conclusion : Among five major categories, medical staffs regard education, research, and medical services more important than other activities in and out of the hospital. Five categories consisted of two or three components. Departments in hospital were grouped into three. However, characteristics of each group was not clearly delineated. This result suggests that more comprehensive tool should be developed and applied in the process of performance evaluation in university hospitals.

• 대한한의학원전학회지
• /
• 제26권2호
• /
• pp.71-83
• /
• 2013

Objective : Printed in early Chosun dynasty Hyangyakjipseongbang quoted several medical books that were published at that time. Yuyaoyuanfang was printed in Yuan dynasty, China and imported to Chosun dynasty. However, Yuyaoyuanfang was vanished in history and another Yuyaoyuanfang, which is now-exist[Guisixinkan-Yuyaoyuanfang], was printed in Japan. In Hyangyakjipseongbang, Yuyaoyuanfang are mentioned 31 times but Yuyaoyuanfang quoteded in Hyangyakjipseongbang is quite different from Guisixinkan-Yuyaoyuanfang. Therefore, we had interests of those differences and tried to find out them in article. Method : We use the method of comparing quotations of Yuyaoyuanfang in Hyangyakjipseongbang with Guisixinkan-Yuyaoyuanfang. Result : 4 of 31 prescriptions of Yuyaoyuanfang quoteded in Hyangyakjipseongbang does not exist in Guisixinkan-Yuyaoyuanfang and several parts such as symtoms, herbs, taking methods of prescriptions are different from each other. Conclusion : Hyangyakjipseongbang prove the fact that Guisixinkan-Yuyaoyuanfang is not original form of Yuyaoyuanfang.

• 한국통신학회논문지
• /
• 제41권4호
• /
• pp.379-386
• /
• 2016

천공이란 길쌈부호의 부호율을 증가시키는데 쓰이는 가장 보편적인 방법이며, 이때 천공하기 전의 길쌈부호를 마더부호라고 한다. 본 논문에서는 임의의 (N, K) 길쌈부호를 특정 (n, 1) 마더부호를 천공함으로써 만들 수 있는지 여부에 대하여 조사하였다. 동일한 부호어 집합을 갖는 두 개의 길쌈부호를 서로 동등(equivalent)하다고 할 때, 주어진 (N, K) 길쌈부호가(n, 1) 마더부호를 천공하여 얻은 천공된 길쌈부호와 동등하기 위한 두 개의 충분조건을 소개한다.

• 응용통계연구
• /
• 제29권3호
• /
• pp.399-408
• /
• 2016

회귀분석에서 이분산이 발생할 경우 표준적 추정절차에 따른 결과는 유효하지 않게 되므로 이를 확인하는 것이 필요하다. 이분산 문제와 더불어 이상치가 함께 존재하면 이분산에 관한 진단은 왜곡될 수 있다. 이상치가 존재할 때 이분산을 진단하는 기존의 방법들은 강건통계량을 이용하거나 이상치를 제거하는 접근법을 사용한다. 이분산 문제에서 이상치를 탐지하기 위하여 여러 가지 접근법이 제시되었다. 본 연구에서는 이분산 진단과정에서 이상치를 배제하기 위하여 기존의 이분산 검정과정에 순차적 이상치 탐지법을 적용하는 절차를 제시한다. 제시된 방법은 모의실험 및 예제를 통해 기존의 검정방법과 검정력을 비교한다.

• 대한치과의사협회지
• /
• 제48권2호
• /
• pp.127-139
• /
• 2010

Objectives : The study explored perceptional gap of dentists and their employees between expectation and satisfaction. Methods : For analysis, the study surveyed 407 employees and 91 dentists on their expectation and satisfaction depending on expectation. Results : When the satisfaction on a question was lower than expectation; the rate of sufficiency was below 100%, it is necessary to improve on the question. Contrarily when the satisfaction on a question was higher than expectation; the rate of sufficiency was upper 100%, it is necessary to continuously support the question. The most of satisfaction of employees on their dentists and their organization were lower than employees's expectation of those. The most of satisfaction of dentists on their own and employees were lower than dentists's expectation of those as similar as employees cases, It means that all of questions need to improve continuously. Conclusions : The issues for prior decision to change these phenomena are 1) improvement of communication each other, 2) recovery of credence each other, and 3) leadership style change from authoritarian to consideration.

• Journal of Mechanical Science and Technology
• /
• 제16권2호
• /
• pp.235-245
• /
• 2002

The present article aims to perform numerical calculations for inter-spray impingement of two diesel sprays under a high injection pressure and to propose a new hybrid model for droplet collision on the basis of literature findings. The hybrid model is compared with the original O'Rourke's model, which has been widely used for spray calculations. The main difference between the hybrid model and the O'Rourke's model is mainly in determination of the collision threshold condition, in which the preferred directional effect of droplets and a critical collision radius are included. The Wave model involving the cavitation effect inside a nozzle is used for predictions of atomization processes. Numerical results are reported for different impingement angles of 60°and 90°in order to show the influence of the impinging angle on spray characteristics and also compared with experimental data. It is found that the hybrid model shows slightly better agreement with experimental data than the O'Rourke's model.

• Steel and Composite Structures
• /
• 제20권5호
• /
• pp.1133-1153
• /
• 2016

In this article, an additive performance ratio method using structural analysis of both 2D and 3D is introduced to mitigate the complexity of work evaluating structural performances of numerous steel outrigger alternatives in multi-story buildings, especially high-rise buildings. The combined structural analysis process enables to be the design of economic, safe, and as constructional demanding structures by exploiting the advantages of steel, namely: excellent energy dissipation and ductility. First the approach decides the alternative of numerous steel outriggers by a simple 2D analysis module and then the alternative is evaluated by 3D analysis module. Initial structural analyses of outrigger types are carried out through MIDAS Gen 2D modeling, approximately, and then the results appeal structural performance and lead to decide some alternative of outrigger types. ETABS 3D modeling is used with respect to realization and evaluation of exact structural behaviors. The approach reduces computational burden in compared to existing concepts such as full 3D analysis methods. The combined 2D and 3D tools are verified by cycle and displacement tests including comprehensive nonlinear dynamic simulations. The advantages and limitations of the Additive Performance Ratio Approach are highlighted in a case study on a high rise steel-composite building, which targets at designing the optimized alternative to the existing original outrigger for lateral load resisting system.