• 한국학교수학회논문집
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• 제7권1호
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• pp.49-69
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• 2004

본 연구는 학생들의 수학 학력 저하를 조금이나마 막아보고자 교육과정의 일환인 특별보충과정을 통하여 부진 학생들이 수학에 대한 관심과 흥미를 가지고 자기주도적인 학습을 하는데 도움이 되도록 하기 위하여 학습자료 개발에 목적을 두고 시작하였다. 이에 따라 C중학교 2학년 특별보충과정 대상학생들의 2003학년도 1학기 중간 및 기말고사의 성적을 토대로 학습결손 영역을 분석한 후, 교과서 및 이미 개발된 학습자료를 수정$.$보완하여 7-가 단계의 내용과 연계성을 고려한 8-가 단계의 특별보충과정 학습자료를 개발하여 C중학교 2학년 특별보충과정에 적용하였다. 그 적용 후에 특별보충과정 학습자료에 대한 반응을 빈도 분석하여 알아보고, 진단평가를 실시한 후 각 영역별로 통과율 결과를 분석하여 특별보충과정 학습자료 개발의 미비한 부분 및 개선 방향을 알아봄으로써 학생들의 학력신장 방안을 모색하여 보고자 하였다.

• 한국국방경영분석학회지
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• 제35권2호
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• pp.15-31
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• 2009

본 논문은 방위사업청 개칭이후 국방획득체계 운영과정에서 드러난 몇 가지 비효율적인 문제점을 분석하고, 이를 개선하는데 필요한 방안을 모색하는데 있다. 이것은 앞으로 국방부가 획득체계를 개선할 시 참고자료로 활용하는데 도움을 줄 수 있을 것이다. 제시된 방안들은 첫째, 국방부와 방위사업청간 중기계획 및 예산편성에 관한 기능을 재정립해야 한다. 둘째,소요-획득-운영유지의 통합관리체계 구축을 통해 경제적 획득관리 및 전력발전을 도모해야 한다. 셋째, 소요-획득분야 인력순환(순환근무)을 제도화하고, 획득인력의 전문성 강화를 위해 인력관리법 및 전문교육체계를 구축해야 한다. 그리고 넷째, 무기체계 '총수명주기체계관리'를 시행하고, 방위사업청 주도의 개발 및 운용시험평가 방식을 개선해야 한다. 이것은 국방부-방위사업청-각 군 간 획득사업을 둘러싸고 파생되는 업무혼선과 갈등을 최소화하는데 있어 필수적인 요소들이다.

• 대한족부족관절학회지
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• 제18권4호
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• pp.195-201
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• 2014

Purpose: The purpose of this study is to develop guidelines for clinical trial of the total ankle replacement system for premarket approval. Materials and Methods: We selected and analyzed nine peer-reviewed articles whose quality had been proven in a previous phase. Two investigators extracted parameters for guideline criteria, including number of cases, patient age, follow-up period, failure rate, radiographic osteolysis rate, residual pain rate, and percentage of satisfaction. In addition, the inclusion and exclusion criteria were analyzed and developed. Results: Eight level IV studies and one level II study were included. The average number of cases was 159 cases and the mean patient age was 63.5 years. The mean follow-up period was 4.2 years, ranging from two to nine. The average failure rate of total ankle replacement in mid- to long-term follow-up was approximately 13% (2%~32.3%). The rate of osteolysis was approximately 18%. Residual pain was common (21.4%~46%), but overall patient satisfaction was approximately 85.6% (67.5%~97%). Conclusion: The results could be used as criteria for designing the clinical studies, such as number of cases, patient age (over 60 years), and follow-up period (minimum two years). The clinical scoring system and 36-item short form health survey (SF-36) was the most commonly used method for clinical evaluation for total ankle arthroplasty. In addition, the overall results, including failure rate, osteolysis rate, and patient satisfaction, could be used as a parameter of guidelines for premarket approval.

• 방사선산업학회지
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• 제8권2호
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• pp.123-132
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• 2014

After the nuclear accident of the Fukushima Dai-ichi Nuclear Power Plants (FDNPPs) on 11 March 2011, a large amount of radioactive materials has been released into the atmosphere and the ocean. A compartment model is used to evaluate the circulation characteristics and the spatiotemporal concentration distributions of radionuclides in the ocean. In the comparison with observed concentrations of $^{137}Cs$ in seawater, calculated concentrations by the compartment model were well agreed with them. On the basis of these results, we performed evaluation of the effective dose and the cancer risk. In the early stage of the accident, the effective doses from ingestion of the seafood near the Fukushima region were much higher than 1 mSv which is the value of the annual effective dose limit to individual recommended by the International Commission on Radiological Protection (ICRP). However, the effective doses by ingestion of the seafood decreased below 1 mSv as distance from the FDNPPs increased and time passed. In addition, it was estimated that the cancer risks by intake of the contaminated marine products were less than natural occurrence probability of cancer. Consequently, it was inferred that the health risk due to the $^{137}Cs$ was low after since mid-term period of the accident.

• 디지털융복합연구
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• 제19권1호
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• pp.1-10
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• 2021

본 연구의 목적은 고등 수학교육에 있어서 스마트러닝기반의 수업이 학업성취도가 낮은 학생들에게 어떤 영향을 미치고 효과성은 어떠한지 분석하는 것이다. 본 연구는 2018년 G대학에서 공학인증 과목인 미적분학II를 수강하는 학생들 중 이전 학기 미적분학I에서 C학점 이하이고, 성취수준이 아주 낮은 학생들로 구성된 '특별반'에 속했던 학생들 중 미적분학II를 공학인증으로 받아야만 하는 16명의 학생들로 구성하여 진행되었다. 스마트폰의 앱에서 3D와 증강현실(AR)을 수업시간에 적극적으로 활용하였으며, 연구결과에 따르면 SNS와 중간고사와 기말고사의 문제분석 결과와 강의평가 결과를 통하여 공간에 대한 시각적 이해가 이루어졌음을 알 수 있었다. 또한 스마트폰의 앱을 활용한 스마트러닝기반 수학수업이 사전 학업성취도에 관계없이 학업성취도 증진 및 수학적 흥미와 태도에 긍정적인 영향을 미쳤음을 알 수 있었다.

• Imaging Science in Dentistry
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• 제53권1호
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• pp.1-9
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• 2023

Purpose: The aim of this study was to evaluate 3-dimensional cone-beam computed tomography (CBCT) images of alveolar bone changes in patients who underwent minimally invasive periodontal surgery-namely, the pinhole surgical technique (PST). Materials and Methods: Alveolar bone height was measured and compared on CBCT images of 254 teeth from 23 consecutive patients with Miller class I, II, or III recession who had undergone PST. No patient with active periodontal disease was selected for surgery. Two different methods were used to assess the alveolar bone changes postoperatively. In both methods, the distance between the apex of the tooth and the mid-buccal alveolar crestal bone on pre- and post-surgical CBCT studies was measured. Results: An average alveolar bone gain >0.5 mm following PST was identified using CBCT(P=0.05). None of the demographic variables, including sex, age, and time since surgery, had any significant effect on bone gain during follow-up, which ranged from 8 months to 3 years. Conclusion: PST appears to be a promising treatment modality for recession that results in stable clinical outcomes and may lead to some level of resolution on the bone level. More long-term studies must be done to evaluate the impact of this novel technique on bone remodeling and to assess sustained bone levels within a larger study population.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.93-94
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• 2021

The Korean government has invested a tremendous amount of money in the last 10 years to build large public research infrastructures (LPRI). For efficient operation and maintenance of LPRI built with expensive equipment and professional engineers, reasonable budget needs to be allocated. However, it is difficult to fulfill sustainable operation and maintenance (O&M) because there is no standard on budgeting for efficient LPRI operation, including expensive equipment and manpower allocation. There have been a lot of cost assessment studies regarding O&M of high-demand facilities such as hospitals, hotels and residential buildings, but a very few on sustainable O&M of LPRI. Therefore, mid/long-term budget establishment plans for efficient LPRI O&M are required from the initial planning stage and a cost assessment model to support the plans should be developed. The objective of this paper is to propose a cost assessment model for sustainable operation and maintenance of large public research infrastructures. To do so, actual O&M data of 6 LPRI types in operation are collected, and regression analysis model (RAM) is used for development and evaluation a cost assessment model. The study result will support sustainable operation of LPRI from a business perspective and be used as basic data for continuous development of cost assessment models to establish budgets for LPRI operation from an academic perspective.

• 한국의상디자인학회지
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• 제25권2호
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• pp.45-59
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• 2023

This study aims to find implications for the introduction and practice of ESG by domestic fashion companies by examining the core ESG topics and strategies of Samsung C&T Fashion Division, Kolon FnC, F&F holdings, and Fila. ESG management analysis examined the importance of the criticality evaluation process, critical issues, and implementation strategies for each key topic based on the company's 2021 ESG sustainable management report, and analyzed the relationship with UN SDGs and the GRI. The analysis results are as follows: As for KCGS' ESG rating, Samsung C&T's fashion division, Kolon FnC, and Fila Holdings were rated A, while F&F Holdings was rated B+. The major issues derived from ESG's criticality assessment are environmental issues related to Samsung C&T's fashion division. Kolon FnC was found to have focused on the social sector and F&F Holdings focused on governance structure. After examining the correlation between the ESG core strategies of the investigated fashion companies and the 17 SDGs, the common areas were identified as quality employment, sustainable production and consumption, and climate changes and response. Correlation with the GRI Standards 2021 Index, (GRI 1, GRI 11, and GRI 12 created in 2021) was not reflected. In the future, it will be necessary to have a transparent governance structure that meets global standards, sets measurable goals, and continuously manages them. Other companies should also recognize ESG management processes that embrace various stakeholders and strengthens win-win cooperation to manage risks, and establish mid- to long-term response strategies.

• 상하수도학회지
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• 제37권6호
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• pp.363-373
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• 2023

Numerous studies have established a correlation between sociodemographic characteristics and water usage, identifying population as a primary independent variable in mid- to long-term demand forecasting. Recent dramatic sociodemographic changes, including urban concentration-rural depopulation, low birth rates-aging population, and the rise in single-person households, are expected to impact water demand and supply patterns. This underscores the necessity for operational and managerial changes in existing water supply systems. While sociodemographic characteristics are regularly surveyed, the conducted surveys use aggregate units that do not align with the actual system. Consequently, many water demand forecasts have been conducted at the administrative district level without adequately considering the water supply system. This study presents an upward water demand forecasting model that accurately reflects real water facilities and consumers. The model comprises three key steps. Firstly, Statistics Korea's SGIS (Statistical Geological Information System) data was reorganized at the DMA level. Secondly, DMAs were classified using the SOM (Self-Organizing Map) algorithm to consider differences in water facilities and consumer characteristics. Lastly, water demand forecasting employed the PCR (Principal Component Regression) method to address multicollinearity and overfitting issues. The performance evaluation of this model was conducted for DMAs classified as rural areas due to the insufficient number of DMAs. The estimation results indicate that the correlation coefficients exceeded 0.9, and the MAPE remained within approximately 10% for the test dataset. This method is expected to be useful for reorganization plans, such as the expansion and contraction of existing facilities.

• 문화기술의 융합
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• 제11권1호
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• pp.389-399
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• 2025

본 연구는 고려시대부터 현대에 이르기까지 해조류인 다시마를 활용한 튀각에 대해 고찰하였다. 다시마는 함경도 지역의 주요 토산품으로, 지역의 식생활과 밀접한 관계가 있었다. 다시마는 튀각, 부각, 매듭자반 등 다양한 요리로 발전하였다. '튀각'이라는 명칭은 19세기 중반부터 사용되면서 한글의 정체성을 보여준다. 다시마 부각은 찹쌀풀을 바른 후 튀겨내어 겨울철 시각적으로 매력적인 음식으로 자리 잡았고, 매듭자반은 사계절 내내 즐길 수 있는 요리로 발전했다. 현대에도 다시마 요리는 건강과 맛을 동시에 충족시키는 중요한 요소로 자리 잡고 있으며, 이는 한국 전통음식의 지속 가능한 특성을 시사한다. 결론적으로, 한국 요리에서 다시마의 가치와 의미를 재조명하고, 향후 연구에서는 다시마를 포함한 해조류의 영양학적 가치와 조리법의 다양성을 더욱 깊이 탐구할 필요성을 제기하였다. 이러한 연구가 다시마와 해조류를 활용한 요리의 발전과 변화를 이해하는 데 기여할 것으로 기대된다.