• 대한화학회지
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• 제62권5호
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• pp.398-411
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• 2018

본 연구의 목적은 탐구적 과학 글쓰기(Science Writing Heuristic)를 적용한 과제연구의 활동이 고등학생의 과학 탐구 능력 및 과학에 대한 태도에 미치는 영향을 알아보는 것이다. 이를 위하여 전남 소재의 고등학교 과학중점과정 2학년 학생 73명을 대상으로 의문 만들기, 실험 설계, 관찰, 주장과 증거, 읽기, 반성의 단계로 구성된 탐구적 과학 글쓰기를 적용한 과제연구 프로그램을 실시하였다. 프로그램의 효과 분석을 위해 과학 탐구 능력과 과학에 대한 태도를 검사하였고, 탐구적 과학 글쓰기를 적용한 과제 연구 수업에 대한 인식을 조사하였으며, 결과 해석의 어려움이 있을 경우 면담을 실시하였다. 연구 결과는 다음과 같다. 첫째, 과학 탐구 능력 중 추리, 가설 설정, 변인 찾기, 조작적 정의, 실험설계, 그래프화 및 데이터 해석, 일반화 능력은 통계적으로 유의미하게 향상되었으나(p<.05), 예상 능력은 향상되었으나 통계적으로 유의미하지 않았다(p>.05). 둘째, 과학에 대한 태도 중 과학에 대한 취미로서의 관심, 과학 수업의 즐거움, 과학 직업에 대한 관심은 통계적으로 유의미하게 향상되었으나(p<.05), 과학 탐구에 대한 태도는 통계적 유의하지 않았지만 점수가 감소했다. 탐구적 과학 글쓰기를 적용한 고등학교 과제 연구 수업은 과학 탐구 능력 및 과학 태도에 긍정적인 효과가 있었지만 오랜 기간 동안 일반 과학 수업과는 다른 형태로 학생이 주도하며 진행되기 때문에 학생들에게 부담이 된다. 그래서 이러한 단점을 최소화하고 장점을 최대화한 과제 연구 수업 전략에 대한 지속적인 연구가 필요하다.

• 한국농촌건축학회논문집
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• 제20권4호
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• pp.85-95
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• 2018

This research aimed to identify transition process of invigoration project of the small-scale schools and status of promoting project of multi-family housing for rental and vacant housing remodeling in Jeju-do, Korea. The results are followings. First, invigoration project of the small-scale schools had been started in villages communities themselves and was institutionalized to local government. To invigorate the small-scale schools was started vacant housing remodeling first in the village itself from 1992. After twenty years had passed, the project was institutionalized to local government in 2013. Second, to enact ordinances about invigoration project of the small-scale schools is the accomplishment of participations and activities of residents who predicted decreasing the number of students in elementary schools. These activities have influenced their communities positively. Finally, to supply multi-family housing for rental or to remodel vacant housing is more effective in increasing residents through influx of students of elementary schools. The average number of students increased from 56.8 in 2013 to 73 in 2018 in 30 elementary schools targeted for invigoration project of the small-scale schools. In particular, the effect in schools targeted the project of rental housing is shown more than schools targeted the project in vacant housing remodeling. In addition, low ratio in the number of closed school is shown in Jeju-do.

• Journal of Cancer Prevention
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• 제21권2호
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• pp.88-94
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• 2016

Background: Breast cancer is the most common malignant disease in women. The patients with advanced breast cancer develop metastasis to bone. Bone metastasis and skeletal-related events by breast cancer are frequently associated with the invasiveness of breast cancer cells and osteoclasts-mediated bone resorption. Forsythia koreana is used in oriental traditional medicine to treat asthma, atopy, and allergic diseases. The aim of this study was to evaluate the inhibitory effects of F. koreana extracts on the invasion of breast cancer cells and bone resorption by osteoclasts. Methods: Cell viability was measured by an MTT assay and the migration and invasion of MDA-MB-231 cells were detected by a Boyden chamber assay. The formation of osteoclasts and pit was detected using tartrate-resistant acid phosphatase staining and calcium phosphate-coated plates, respectively. The activities of matrix metalloproteinases (MMPs) and cathepsin K were evaluated by gelatin zymography and a cathepsin K detection kit. Results: The fruit and leaf extracts of F. koreana significantly inhibited the invasion of MDA-MB-231 cells at noncytotoxic concentrations. The fruit extract of F. koreana reduced the transforming growth factor ${\beta}1-induced$ migration, invasion and MMPs activities of MDA-MB-231 cells. In addition, the fruit, branch, and leaf extracts of F. koreana also inhibited the receptor activator of nuclear factor kappa-B ligand-induced osteoclast formation and osteoclast-mediated bone-resorbing activity by reducing the activities of MMPs and cathepsin K. Conclusions: The extracts of F. koreana may possess the potential to inhibit the breast cancer-induced bone destruction through blocking invasion of breast cancer cells, osteoclastogenesis, and the activity of mature osteoclasts.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 C
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• pp.1506-1509
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• 2000

The Korean National Photovoltaic Project was initiated in October 1989 to develop technologies for the generation of economically competitive electric power by photovoltaic systems. It consists of four stages through the year 2006 with technical goals and cost targets related with solar cells, balance of systems and system application. The objectives of the project are to utilize photovoltaic technology, to transfer developed technology to industries and end users by research activities and to diffuse photovoltaic systems by demonstration projects. This paper reviews long-term plan abd status of technology R&D, and markets of photovoltaics. Some activities designed to promote collaboration with foreign countries are also introduced.

• 한국IT서비스학회지
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• 제17권3호
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• pp.117-138
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• 2018

The purpose of this study is to empirically analyze the relationships between the Boundary Spanning Activities (BSA) of project team and system performance in ERP system development projects. We could theoretically classify the BSA in the ERP development projects into five categories on the basis of existing studies on the BSA in the research fields of organization theory, new product development, and information systems development. These five categories are 'Ambassador' activities, 'Task-coordinator' activities, 'Scout' activities, 'Sentry' activities and 'Guard' activities. And the relationship between the implementation level of activities included in each category and the project performance (system usage and users' satisfaction) was hypothesized with respect to five BSA categories. In order to test the hypotheses, we conducted on/offline survey of the participants who were involved in the ERP system development projects, and received 345 valid responses. The unit of analysis was the project team, and the total number of teams that survey participants belonged to were 103 ones. The Structural Equation Model Analysis using the SMART PLS 3.0 was applied to statistically testing the hypotheses. The results showed that 10 hypotheses among 12 hypotheses could be supported. The theoretical implications of this study can be summarized as following; first, redefining and categorizing the BSA (Boundary Spanning Activities) in the ERP system development projects, secondly, deriving measurement indicators of the implementation level for each BSA category and statistically proving the validity and the reliability of them, and finally, suggesting the theoretical background of expanding the management area of ERP systems development projects. Furthermore, the practical implication of this study is that concrete BSA items which are empirically derived can be utilized as effective guidelines for successfully implementing the BSA in the process of managing the ERP system development projects.

• 가족자원경영과 정책
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• 제16권2호
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• pp.187-210
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• 2012

Pumasi and Cooperative Child Care Sharing have had positive results among participants and show possibilities of spreading out to the community in general. However, performance was not proved where it is clarified, and the experience of 23 local Healthy Family Support Centers have that ran the demonstration project were unable to be collected. It is the point of time when the initial backing up is important but the centers do not have the systematic support. Therefore, this research presents an effective management plan through qualitative research involving Pumasi participants and person in charge. The operation strategies by the stage of the project were as follows: First, in the beginning stage, the person in charge establishes the target and vision of the project. Second, when comprising the Pumasi team, it was necessary to consider their characteristics according to the team organization subjects. Third, it is necessary to extend the turn-off time and provide many programs so that the various populations can participate. Fourth, in the advertising step, word of mouth and individual contact needs to be utilized. Fifth, in a medium or small city or an urban-rural complex area, the person in charge should support the participants' Pumasi activities. Sixth, various programs such as a passive and active parent education program and Pumasi education program for the leader needs to be provided for the activation of Pumasi activities. Lastly, a cooperative child care sharing location needs to be constructed by the duality system of the base space and outer space. In this location, the inside play space for the children is essential.

• 시스템엔지니어링학술지
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• 제14권1호
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• pp.52-62
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• 2018

A software support system, called procurement engineering management support system (PeMSS), is currently under development through a joint research project. The procurement-related scenarios considered in this research is as follow: an EPC (Engineering, Procurement and Construction) company receives an EPC project contract and starts the project to deliver the agreed system to the acquirer. In order to acquire the required equipments that the EPC company does not produce by itself, it eventually interacts with subcontractors, also called vendors. The EPC company responsibilities during the procurement activities are twofold. First, the EPC company has to guarantee that it has ordered the equipment, through issuing Purchase Order (PO), based on the requirements stated in the contract. Second, the EPC company has to verify that the received equipment designs, called Vendor Print (VP), meet the specifications in the PO, before finally acquiring the equipments. During our survey study, we discovered that EPC company takes a lot of time and effort to create PO and verify VP, mainly because these activities are performed manually by the responsible engineers. Therefore, we intent to support the above activities by developing a support system to the legacy procurement system that can trace the requirements from the contract to the PO and VP, among other functionalities. At the time of the writing of this paper, PeMMS is still under-development, thus, in this paper we focus on presenting the development steps of PeMMS using systems engineering theory and introducing the PO creation function. Wholly, PeMSS attempts to reduce the time and effort of engineers on the procurements activities while also increasing the quality of the procurement outcomes.

• 공학교육연구
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• 제25권1호
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• pp.55-64
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• 2022

In this paper, the characteristics of peer-evaluation and self-evaluation of team activity participation in project-based learning and their usability were investigated. The characteristics of peer-evaluation and self-evaluation are as follows. First, in peer-evaluation and self-evaluation of project-based learning, the correlation between the two evaluation scores was very high. When students' scores from their peers correlate very well with the scores they give themselves, it means that they apply the same criteria to their peers and to themselves when evaluating team activity. Second, there was no difference in peer-evaluation and self-evaluation scores between groups with different written test scores. The fact that peer-evaluation and self-evaluation scores do not change according to academic ability shows that the two evaluation areas are independent. Third, the self-evaluation score in project-based learning is statistically significantly higher than the score received from peers. This raises doubts about the fairness of self-evaluation. Therefore, in this paper, it is suggested that self-evaluation of team activities in project-based learning is carried out together with peer-evaluation, but only peer-evaluation is reflected in credits.

• 산업경영시스템학회지
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• 제42권4호
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• pp.165-172
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• 2019

Innovation activities represented by Six Sigma (6σ) led to improvements not only in manufacturing industries but also in various business fields. In the aviation industry, Six Sigma has been used as a tool of innovation since the beginning of 2000, and it has developed into a comprehensive form of innovation activity that includes various improvement tools. In this study, the innovation activities in K company that is a representative company of aviation industry are summarized in the last 10 years, and the effectiveness of the innovation tools and the performance of the tasks are also analyzed. The results of 2,091 projects over the past decade have been analyzed from various perspectives. First, we found out the tools that were used frequently at each DMAIC step, showed their frequency, and analyzed the evaluation results for the project. The project was evaluated from grade 1 (highest level) to grade 7 (lowest level) with an average grade of 4.1 for the overall project. The evaluation grades of the projects were compared and analyzed in terms of the qualifications of the leader, the roadmap for the implementation of the project, the financial effect, the size of the financial effect, the business classification, and the project execution period. These results may suggest new perspectives for companies considering or adopting innovation programs.

• 한국가정과교육학회지
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• 제15권1호
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• pp.15-32
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• 2003

This study examined teacher perception of the instructional method. activities and material in terms of class quality enhancement. Also this study established instructional method. activities and material application Per 7th Practical Arts Education Course guidance domain. and type identification of the instructional method and activities unique to the Practical arts curriculum. Conclusions : 1. Teachers consider the instructional method and material beneficial. However in the item relevant to application of diverse instructional methods Per specific teaching objective and educational content in the actual classroom. the highest percentage responding. ‘relatively yes’ (39.7%) . balanced out with those answering. ‘no’(37.7%) 2. In linking the instructional method and material to secondary school home economics education, teachers experienced difficulty in teaching only the clothing education domain . 3. In each guidance domain, lecture method, problem-solving learning. cooperative learning. home project learning and functional learning were surveyed for instructional method suitability. Notably, home project learning was identified as a significant instructional method. This result begs in-dept analysis as home project learning may be utilized as a tool to compensate for the absence of practical educational objective condition fulfillment and to substitute for teachers unable to Provide such functional guidance in class. 4. In each guidance domain. role-playing. debate/discussion. case study research, practical exercise and activity reporting were rated as essential teaching ㆍ learning activities. 5. In each guidance domain.‘VCR’, ‘CD-ROM’ and ‘Web media’ were identified as suitable instructional materials .