• 대한기관식도과학회지
• /
• 제9권1호
• /
• pp.39-46
• /
• 2003

Surgery remains the standard treatment for resectable thoracic esophageal cancer but that is justified only when acceptably low morbidity and mortality rates can be achieved even for advanced disease. The appropriate extent of resection to achieve the best outcome is the most controversial aspect of treating esopahgeal cancer and the optimal excent of lymphadenectomy also remains controversial. Until data from prospective randomized trials showing a clear benefit using a particular approach are available, surgeons should perform their better judgement in individualizing and selecting the most appropriate surgical approach to provide the best chance of cure or lasting palliation for this disease that challanges both patient and surgeon. Further studies are necessary to examine the utility and efficacy of each approach in treating thoracic esophageal cancer either alone or in combination with other modalities.

• The Journal of Asian Finance, Economics and Business
• /
• 제3권2호
• /
• pp.51-57
• /
• 2016

The aim of this study is to examine of the cluster approach to ensure high rates of innovation, information and communication enterprises of information technology cluster in order to enhance the competitiveness of regions. Keeping with the previous literature, the present research determined that the novelty of the problem, concerning of the creation IT clusters as drivers of new generation, i.e. a kind of platform of "startup accelerators" through the creation of previously not existing in the country high-tech industries and sectors of the economy. The study employs system approach involves to determine prospective directions of the formation of clusters of IT industry, also applies structured approach to shows relationships between elements of cluster systems (participants of cluster), as well as focusing on some aspects of cluster development such as networking. Based on this analysis we have proposed to create clusters in regions, which can play the role of translator's innovations at the periphery of the country. This research shows that formation of IT clusters is one of the most successful tools to avoid of dependence of Kazakhstan from raw materials.

• 시스템엔지니어링학술지
• /
• 제1권2호
• /
• pp.12-18
• /
• 2005

ACTDs exploit mature technologies to solve important military problems. A reducing budget, significant changes in threats, and an accelerated pace of technology development have challenged our ability to adequately respond to rapidly evolving military needs. This work describes ACTD management and its program applications. It is presented a prospective and applications of domestic defense acquisition programs.

• 한국콘텐츠학회논문지
• /
• 제17권12호
• /
• pp.148-157
• /
• 2017

본 연구는 예비유아교사 대상 부모교육 수업을 액션러닝으로 운영한 사례를 분석하여 부모교육 수업에서 액션러닝이 어떻게 활용 될 수 있는지 그 효과를 제시하였다. 대전에 위치한 P대학교 유아교육학과에 재학중인 예비교사 32명(유아교육학과 30명, 복수전공자 2명)을 대상으로 12주간 동안 이론과 실제 액션러닝 프로그램을 실시하였다. 자료 수집은 학생들이 매주 작성한 성찰일지, 조별과제, 심층면담자료, 동료 및 자기 평가를 통해 이루어졌으며 질적 사례연구 접근으로 분석하였다. 질적 분석 결과는 다음과 같다. 액션러닝 교수법은 학생 주도적, 그룹수업 경험을 통해 다양한 사고를 접하고 사고의 폭을 확장할 수 있었다. 예비 부모로서, 예비 유아교사로서 부모로서의 역량과 부모접하기 역량을 향상시킬 수 있는 경험을 하였다. 실제 갈등 상황을 해결해 보는 경험을 통한 실천적 지식의 획득은 어려운 부분도 있었지만, 부모역할과 유아교사 역할이 힘들 수 있음을 인식하는 경험과 앞으로 발생할 수 있는 실제 상황 해결에 자신감을 가질 수 있는 계기가 되었다.

• 과학교육연구지
• /
• 제47권1호
• /
• pp.52-62
• /
• 2023

이 연구는 예비 지구과학 교사들이 지구 복사 평형을 이해하는 데에 있어서 '평형'이라는 개념과 '지구의 권역 간 상호 작용'을 어떻게 인식하고 있는지를 탐색하며, 이들이 갖는 오개념을 규명하고자 하였다. 이를 위해 국가 수준의 평가에서 등장한 문항을 중심으로 이들의 사고 흐름을 들여다 볼 수 있는 질문지를 설계하여 이들에게 투입하였다. 이 설문지의 답변을 분석한 결과, 모든 예비 교사들이 복사 평형 개념을 바르게 서술하였음에도 불구하고, 이들의 약 90%는 복사 평형 개념을 대기가 없는 새로운 지구 환경에 확대 적용하지 못하였다. 이들은 변화된 권역간 새로운 '상호 작용'의 개념 및 오랜 시간에 걸쳐 도달하게 되는 새로운 '평형'의 개념을 원활히 이끌어내지 못하는 것으로 보인다. 이러한 점에서, 예비 교사들의 이러한 개념 형성에 교과서가 어느 정도 영향을 주었을 것으로 보인다. 특히, 고등학교 지구과학 교과서에서는 지구가 복사 평형에 도달하는 과정보다는 평형 상태에서의 열 수지에 초점을 두어 복사 평형을 정량적 방식으로 설명하고 있다. 교과서의 이러한 접근 방식은 학생들을 2015 개정 교육과정에서 추구하는 창의융합형 인재로 육성하기에는 걸림돌이 될 수 있을 것이다. 한편, 지구 복사 평형의 이해에서 자주 발견되는 학생들의 오개념 해소를 위해서 이 연구는 예비 교사를 양성하는 대학 과정에서도 지구 복사 평형의 개념에 대해 좀 더 주의 깊게 다뤄져야 함을 제안한다.

• 한국지능정보시스템학회:학술대회논문집
• /
• 한국지능정보시스템학회 2000년도 추계정기학술대회:지능형기술과 CRM
• /
• pp.289-299
• /
• 2000

This study provides an application of datamining approach to CQI(Continuous Quality Improvement) using the discharge summary. First, we found a process variation in hospital infection rate by SPC (Statistical Process Control) technique. Second, importance of factors influencing hospital infection was inferred through the decision tree analysis which is a classification method in data-mining approach. The most important factor was surgery followed by comorbidity and length of operation. Comorbidity was further divided into age and principal diagnosis and the length of operation was further divided into age and chief complaint. 24 rules of hospital infection were generated by the decision tree analysis. Of these, 9 rules with predictive prover greater than 50% were suggested as guidelines for hospital infection control. The optimum range of target group in hospital infection control were Identified through the information gain summary. Association rule, which is another kind of datamining method, was performed to analyze the relationship between principal diagnosis and comorbidity. The confidence score, which measures the decree of association, between urinary tract infection and causal bacillus was the highest, followed by the score between postoperative wound disruption find postoperative wound infection. This study demonstrated how datamining approach could be used to provide information to support prospective surveillance of hospital infection. The datamining technique can also be applied to various areas fur CQI using other hospital databases.

• 한국환경보건학회지
• /
• 제48권5호
• /
• pp.255-265
• /
• 2022

Background: Research in environmental health (EH) is of crucial strategic importance for contemporary society. It is becoming even more critical in light of the increasingly rapid pace of environmental changes, opportunities, and threats. Objectives: This study aimed to identify trends and the prospective of environmental health research using SWOT analysis. Methods: The trends in environmental health research were reviewed in previous studies and reports. Reviewed manuscripts were searched for using the keywords of 'environmental health' and 'environmental hygiene' in the KCI (Korean Journal of Citation Index), KISS (Korean Academic Information), PubMed, and Google Scholar. Results: It is essential to center the EH research agenda around key priorities focusing on technological innovation, job creation, and the increasingly prominent role of the private sector. Given the rapidly evolving global sustainability agenda, greater clarity on the ever-increasing sources of complexity and growing expectations of the public might be needed. This requires the identification of criteria to identify EH research priorities with the ultimate goal of maximizing societal benefit. Public health relevance, such as extent and severity of health impact, level of exposure, and inequalities of effects, could be included. Conclusions: Considering the recent interest in and importance of environmental health, a comprehensive approach to environmental health research should be required through the application of the latest science and technology, citizen participation, and environmental health surveillance systems.

• Journal of Gastric Cancer
• /
• 제19권2호
• /
• pp.157-164
• /
• 2019

Purpose: Although standard radical gastrectomy is recommended after noncurative resection of endoscopic submucosal dissection (ESD) for early gastric cancer in most cases, residual tumor and lymph node metastasis have not been identified after surgery. The aim of this study is to evaluate the feasibility of sentinel node navigation surgery after noncurative ESD. Materials and Methods: This trial is an investigator-initiated, multicenter prospective phase II trial. Patients who underwent ESD for clinical stage T1N0M0 gastric cancer with noncurative resections were eligible. Qualified investigators who completed the prior phase III trial (SENORITA 1) are exclusively allowed to participate. In this study, 2 detection methods will be used: 1) intraoperative endoscopic submucosal injection of dual tracer, including radioisotope and indocyanine green (ICG) with sentinel basins detected using gamma-probe; 2) endoscopic injection of ICG, with sentinel basins detected using a fluorescence imaging system. Standard laparoscopic gastrectomy with lymphadenectomy will be performed. Sample size is calculated based on the inferior confidence interval of the detection rate of 95%, and the calculated accrual is 237 patients. The primary endpoint is detection rate, and the secondary endpoints are sensitivity and postoperative complications. Conclusions: This study is expected to clarify the feasibility of laparoscopic sentinel basin dissection after noncurative ESD. If the feasibility is demonstrated, a multicenter phase III trial will be initiated to compare laparoscopic sentinel node navigation surgery versus laparoscopic standard gastrectomy in early gastric cancer after endoscopic resection.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1994년도 Proceedings of the Korea Automatic Control Conference, 9th (KACC) ; Taejeon, Korea; 17-20 Oct. 1994
• /
• pp.152-155
• /
• 1994

The presence of joint elasticity or the arm flexibility causes low damped oscillatory position error along a desired trajectory. We utilize a stochastic model for describing the fast dynamics and the approximation error. A second order shaping filter is synthesized such that its spectrum matches that of the fast dynamics. Augmenting the state vector of slow part with that of shaping filter, we obtain a nonlinear dynamics to which a Gaussian white noise is injected. This modeling approach leads us to the design of an extended Kalman filter(KEF) and a linear quadratic Gaussian(LQG) control scheme. We present the simulation results of this control method. The simulation results show us that our Kalman filtering approach is one of prospective methods in controlling the flexible arms.

• 한국추진공학회:학술대회논문집
• /
• 한국추진공학회 2009년도 제33회 추계학술대회논문집
• /
• pp.459-468
• /
• 2009

Analysis of the uncertainty to have engineering solution of gas-dynamic and hydrodynamic problems is based on the comparison the prospective engineering solution with experimental result. In this paper, the mathematical model to estimate heat flux along gas-dynamic channel wall and the solution sequence are shown. Statistical information and generalizing experimental characteristics about gas- and hydro-dynamic channels were applied to the mathematical model. As the results, it is possible to draw a conclusion that models of the integrated approach, using the averaged statistical data of generalizing characteristics for a turbulent flow, without consideration of the turbulent mechanism (characteristic pulsations), can predict a nominal operating regime for gas-dynamic and hydrodynamic systems. The probable deviation of operating regime for newly designed the gas-dynamic channel can achieve 20% from a regime predicted on a basis 1-D or 3-D modelling irrespective of a kind of used models.