• 한국수학교육학회지시리즈A:수학교육
• /
• 제51권4호
• /
• pp.351-375
• /
• 2012

This research is a case study of the changes of students's problem solving ability and affective characteristics when we apply to general students MG-CPS model which is creative problem solving model for gifted students. MG-CPS model which was developed by Kim and Lee(2008) is a problem solving model with 7-steps. For this study, we selected 7 first grade students from girl's high school in Seoul. They consisted of three high level students, two middle level students, and two low level students and then we applied MG-CPS model to these 7 students for 5 weeks. From the study results, we found that most students's describing ability in problem understanding and problem solving process were improved. Also we observed that high level students had improvements in overall problem solving ability, middle level students in problem understanding ability and guideline planning ability, and that low level students had improvements in the problem understanding ability. In affective characteristics, there were no significant changes in high and middle level classes but in low level class students showed some progress in all 6 factors of affective characteristics. In particular, we knew that the cause of such positive changes comes from the effects of information collection step and presenting step of MG-CPS model.

• 융합보안논문지
• /
• 제16권6_1호
• /
• pp.33-42
• /
• 2016

이 연구의 목적은 NCS 기반 역량 교육을 적용하여 해군부사관과에 적합한 리더십 교육방안을 고찰하는 것이다. NCS 기반 역량 교육을 적용한 리더십 교육은 지식과 경험을 통한 개별역량 통합적 활용을 키우는 것이다. 이에 따른 해군부사관과의 리더십 교육은 4단계로 구성된다. 구체적으로 보면, 첫째, 역량 진단. 둘째, 역량 진단을 통한 교육방향 설정과 프로젝트 구성. 셋째, 프로젝트를 통한 이론과 배경지식의 통합과 프레젠테이션을 통한 문제분석 및 해결방안의 의사소통 경험 제공. 넷째, 역량진단을 통한 학습 결과 제시이다. NCS 기반 역량 교육을 적용한 리더십 교육은 해군부사관과의 학생들이 프로젝트를 구성하고 프레젠테이션으로 발표함으로써 리더십 핵심역량을 향상시키는 방안이다. 마지막으로 이 연구의 한계와 향후 연구를 위한 제언을 하였다.

• Journal of Genetic Medicine
• /
• 제18권2호
• /
• pp.142-146
• /
• 2021

Alagille syndrome (AGS) is a rare autosomal dominant inherited disorder, with major clinical manifestations of bile duct paucity, cholestasis, cardiovascular anomaly, ophthalmic abnormalities, butterfly vertebrae, and dysmorphic facial appearance. It is caused by heterozygous mutations in JAG1 or NOTCH of the Notch signaling pathway presenting with variable phenotypic penetrance and involving multiple organ systems. The following case report describes a unique case of a 16-year-old female with AGS who presented with the primary complaint of renovascular hypertension. She had a medical history of ventricular septal defect and polycystic ovary syndrome. The patient had a dysmorphic facial appearance including frontal bossing, bulbous tip of the nose, a pointed chin with prognathism, and deeply set eyes with mild hypertelorism. Stenoocclusive changes of both renal arteries, celiac artery, lower part of the abdominal aorta, and left intracranial artery, along with absence of the left internal carotid artery were found on examination. Whole exome sequencing was performed and revealed a pathologic mutation of JAG1, leading to the diagnosis of AGS. Reverse phenotyping detected butterfly vertebrae and normal structure and function of the liver and gallbladder. While the representative symptom of AGS in most scenarios is a hepatic problem, in this case, the presenting clinical features were the vascular anomalies. Clinical manifestations of AGS are diverse, and this case demonstrates that renovascular hypertension might be in some cases a presenting symptom of AGS.

• 대한공업교육학회지
• /
• 제40권1호
• /
• pp.121-141
• /
• 2015

본 논문은 3년간(2012~2014) 학부에서 진행된 다학제 융합수업 개선을 위하여 융합 교육과정, PBL(Problem Based Learning)과 TBL(Team Based Learning)의 활용, 효과적인 발표 등에 대한 딜레마를 다루었으며, 내러티브 탐구 방법으로 시간, 장소, 교육과정에서 일어나는 교사와 학생의 상호작용을 기술한 연구이다. 본 연구 결과로부터 도출된 몇 가지 수업 개선점을 제안하면 아래와 같다. 첫째, 융합수업에서 교수들의 미니 강의비율이 대체로 높다. 강의시간을 1/4로 줄이고 수업시간에 중요한 토론과 과제를 마칠 수 있도록 시간을 배려하고, 즉각적인 도움을 제공한다면 학생들의 과제부담은 줄어들 것이다. 둘째, 기존의 교육과정 틀을 유지한 채 융합수업을 시행하기 위해서는, 각 학과 전공교육과정에 '융합교과목'이라는 과목을 설치하여 다른 학과 교수와 함께 수업을 개설할 기회를 제공하는 것이 좋다. 셋째, 본 수업에서 PBL과 TBL를 동시에 적용하는 효율적인 수업진행 방식은, TBL에서 요구하는 과제를 하나의 문제 상황으로 생각하고 PBL 학습방법을 활용하는 것이다. 마지막으로, 이상적인 발표수업은 매시간 발표할 기회를 학생에게 제공하는 것이 바람직하다. 팀 발표수업의 횟수는 한 학기 3번이 적당하지만, 발표시간이나 방법은 수정이 필요하다. 발표 전날 모든 팀으로부터 발표내용을 받고, 팀 발표시간은 15분에서 30분으로 늘리고 2일 동안 발표를 한다면 학생은 발표 준비와 진행에 여유를 갖게 될 것이다.

• 경영과학
• /
• 제9권1호
• /
• pp.31-40
• /
• 1992

The size of software collection at any organization is increasing rapidly with the use of computer becomes popular for various applications. This trend points out the importance of proper 'catalog'or 'directory' for software collections, however, only 'title list' is found in practice. The problem of no proper directory with software collection would be more serious than the problem with book collection since browsing is not possible with softwares. Many of the expensive softwares will be a waste of money to purchase and to hold if no catalog about them is provided. In this paper the difficulties in applying AACR2 to software cataloging and the most important characteristic of computer software are discussed as well as presenting the necessity of localized information due to the requirement of a machine to be used, the difficulty using subject-based-call-number scheme, an expected way of searching software to design a location indicator, software qualifications to be cataloged, and so on. In addition, an analysis of randomly selected softwares after a cataloging practice is followed.

• Journal of applied mathematics & informatics
• /
• 제35권5_6호
• /
• pp.623-649
• /
• 2017

Retrial queues have been widely used to model the many practical situations arising from telephone systems, telecommunication networks and call centers. An approximation method for a simple Markovian retrial queue by reducing the two dimensional problem to one dimensional problem was presented by Fredericks and Reisner in 1979. The method seems to be a promising approach to approximate the retrial queues with complex structure, but the method has not been attracted a lot of attention for about thirty years. In this paper, we exposit the method in detail and show the usefulness of the method by presenting the recent results for approximating the retrial queues with complex structure such as multi-server retrial queues with phase type distribution of retrial time, impatient customers with general persistent function and/or multiclass customers, etc.

• 산업공학
• /
• 제17권3호
• /
• pp.282-293
• /
• 2004

Line Balancing is the problem to assign tasks to stations while satisfying some managerial viewpoints. Most researches about the Mixed-Model Line Balancing problems are focused on the minimizing the total processing time or the number of workstations. Independently, some research reports consider the balance issues of the physical workloads on the assembly line. In this paper, we are presenting a new mathematical model to accomplish the line balance considering both the processing time and the workloads at the same time. To this, end, we propose an zero-one integer program problem, and we use the Chebyshev Goal Programming approach as the solution method. Some computational test runs are performed to compare the pay-offs between the processing time and the workloads. And, the test results show us that the reliable balanced work schedules can be obtained through the proposed model.

• Journal of the Optical Society of Korea
• /
• 제15권4호
• /
• pp.345-351
• /
• 2011

We present a novel approach to the holographic three-dimensional display using a liquid crystal shutter for binocular display applications. One of the difficult problems in implementing a binocular holographic three-dimensional display is the extremely narrow viewing angle. This problem is attributed to the spatial light modulator pixel number which restricts the maximum spatial bandwidth of the spatial light modulator. In our proposed method, a beam splitter and liquid crystal shutter are used to present two holograms of a three-dimensional scene to the corresponding eyes. The combination of holographic display and liquid crystal shutter can overcome the problem of the extremely narrow viewing angle, presenting threedimensional images to both eyes with correct accommodation depth cues.

• 한국시스템다이내믹스연구
• /
• 제2권1호
• /
• pp.5-28
• /
• 2001

The advent of Electronic Commerce is raising two hypothetical questions conflicting each other in economic point of view. The one is that cyberspace will eventually resolve the problem of economic disparity by presenting equal opportunities to local companies through the removal of barriers in terms of time and space. The other is that the problem of economic disparity will be amplified by the vicious cycle of reproduction on an enlarged scale residing in the new rules of digital economy. As an initial attempt to tackle the questions listed above, by introducing systems thinking and adopting the systems dynamics simulation technique this paper puts an effort to find some tentative answers to the questions possibly raised about the impact of electronic commerce on local economy on which little research has been conducted so far. The general scheme for the dynamism of systems where two groups of electronic malls compete each other and the findings presented in the paper would perhaps provide some ideas and directions for further study.

• International Journal of Advanced Culture Technology
• /
• 제11권1호
• /
• pp.312-319
• /
• 2023

This study aims to enhance the engineering education for non-majors by incorporating the concept of Global Citizenship Education and addressing the need for education that responds to climate and ecological changes. The study uses robot programming as a tool to foster the development of global citizens. Non-majors often struggle with producing more than just motionless forms or solid productions, due to a lack of understanding of mechanisms and coding. The study proposes the use of the Convergence D-SteamRobot (DSR) to address this issue by blending humanities and engineering. This is achieved by presenting problems through books to increase empathy, integrating simple machine mechanisms, and creating prototypes to solve self-defined problems. Through this process, learners determine the SDGs topic they want to solve and learn about the simple mechanical mechanism involved in producing the prototype. The educational model provides a constructivist learning environment that emphasizes empathy and exploration, encourages peer-learning, and improves divergent thinking and problem-solving skills.