• 대한치과보철학회지
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• 제46권6호
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• pp.569-576
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• 2008

STATEMENT OF PROBLEM: While patient-centered outcomes are usually not reported, these may represent major aspects of the implant success for the patient. Use of a well-designed patient survey form can be an invaluable asset to the implant practitioners. PURPOSE: The objective of this study was to investigate patient satisfaction after implant therapy by means of a questionnaire. MATERIAL AND METHODS: South Korean patients (n = 100), who visited the dental examination center of Soon Chun Hyang university hospital, were asked to fill out the satisfaction questionnaire regarding aspects of cost, comfort, esthetics, chewing, gingival health, food impaction, phonetic aspect, screw loosening, and general satisfaction. Responses to statements were given on the Likert response scale. Four experimental groups of patients were distinguished with various location ($A_1,\;A_2,\;A_3$), year ($B_1,\;B_2,\;B_3$), number of implant replacements ($C_1,\;C_2,\;C_3$), and treatment cost ($D_1,\;D_2,\;D_3$). The reliability of the response scales was measured by calculation of its internal consistency, expressed as Cronbach's ${\alpha}$. The scales were distinguished by means of factor analysis method. Possible differences in scale scores among the groups were assessed by One-way ANOVA (${\alpha}$= 0.05). RESULTS: Patients responded to most of the statements with high satisfaction. But the mean scale score of statement about cost was low. After the verification of internal consistency and factor analysis, five components, e.g. general satisfaction, comfort, chewing efficiency, esthetics, and phonetic aspect were grouped together. These components could be explained with common meaning and the first factor was named as 'general satisfaction'. Differences in patient satisfaction on the scale with esthetics were present between patients who have been wearing the implant prosthesis less than three years and those more than seven years ($B_1<B_3$). CONCLUSION: The patients were generally satisfied with the outcome of implant treatment. But the patients' major complaint was high cost and while the statistically significant difference was not shown, the satisfaction scale about food impaction and esthetics was low. So the continuing efforts to make improvements about these problems are needed for the implant practitioners.

• 한국과학교육학회지
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• 제37권4호
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• pp.577-586
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• 2017

이 연구의 목적은 개념도 연구법을 적용하여 초등과학영재 어머니들의 자녀 진로에 대한 인식을 구조화하는 것이다. 개념도 연구법은 참여자가 자유롭게 주제에 대해 말하고, 그 내용을 진술문으로 추출하여 직접 분류하는 과정을 거친다. 이 연구에 참여한 어머니들은 자녀가 초등학교 5, 6학년이며 과학영재교육대상자로 선발되었다. 다양한 영재 어머니들의 의견이 반영되도록 영재학급, 과학고 영재원, 대학부설 영재원 그룹의 어머니들을 따로 만나 연구를 진행하였다. 먼저 26명을 섭외하여 브레인스토밍을 통해 주제에 대해 이야기 하며 50개 진술문을 추출하였고 그 가운데 10명을 다시 만나 무선화한 진술문 카드를 각자 분류하도록 하였다. 분류결과는 비유사성행렬로 변환하여 SPSS 다차원 척도분석과 군집분석을 하여 개념도를 작성하였다. 그리고 총 140명의 어머니들로부터 리커트 5점으로 진술문에 대한 의견을 조사하였다. 연구 결과, 과학영재 어머니들이 갖고 있는 자녀 진로에 대한 인식은 총 6개의 군집과 50개의 진술문으로 이루어져 있으며 각각의 군집명은 '사교육, 성적, 진학에 대한 부담감', '영재교육원 및 학교의 진로교육에 대한 생각', '자녀 진로교육에 관한 부모역할', '가정에서 겪는 진로지도의 어려움', '진로지도를 위한 부모역량강화 요구', '사회적 지원요구'이다. 군집별 공감 정도 평균은 '사회적 지원요구'가 가장 높았으며 '가정에서 겪는 진로지도의 어려움'과 '사교육, 성적, 진학에 대한 부담감' 군집은 낮은 편이었다. 이 연구결과를 통해 논의하고자하는 시사점은 영재 어머니들이 자녀 진로를 인식할 때 진학, 사교육, 성적이 큰 부담으로 자리 잡고 있다는 점이다. 이러한 부담은 진로교육에 대한 부정적 염려로 이어지고 있으므로 우려스러운 부분이다. 또한, 어머니들은 가정에서 진로지도의 어려움을 겪고 있으며 이를 해결하고자 하는 요구가 높았다. 이를 위한 구체적인 지원 내용과 방법에 있어서는 개별화, 맞춤화된 방법과 문제해결능력 관련 부모역량을 강화하는 내용으로 이루어져야함을 시사한다. 또한 영재 진로지도를 위한 사회적 지원요구가 높으므로 이에 대한 적절한 지원방법에 대한 논의가 이루어져야 한다.

• 대한치과보철학회지
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• 제38권3호
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• pp.291-309
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• 2000

Statement of problem. There were several studies on the effects of irradiation to peri-implant bone tissue. However, no clear biological effect of irradiation on peri-implant bone tissue was reported yet. Purpose. This study compared the effect of irradiation on the surrounding tissue of a HA-coated implant fixture with controls. Material and methods. 6 Steri-Oss implants were implanted into the femur of 6 mongrels. The implanted dogs were divided into three groups and received irradiation. After 1 month, 2months and 4 months healing period, the histologic examination and mobility test and digital radiographic imaging analyses were performed to compare the control and experimental group respectively. Results. The irradiated group showed slower healing than control group in light microscopic observations. The mobility test demonstrated significant less number (Periotest) in control group than that of irradiated groups. The digital radiographic imaging analysis showed that the bone density of irradiated group was higher than control group. Conclusion. Generally, control group showed favorable biological response and less mobility than irradiated group. The conflict result of bone density value were measured by the digital radiographic imaging analysis. The digital radiographic imaging analysis needs more research in future.

• 한국기계가공학회지
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• 제15권1호
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• pp.122-128
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• 2016

The purpose of this study was to develop improved strength of an arm and a boom on over-load environment, which causes damage in the initial design statement. To develop improved strength of an excavator front group, we calculated load conditions using the MATLAB program, and using these conditions, we performed a structural analysis of an excavator front group for the maximum digging force condition. Finally we performed a topology optimization to reduce weights of an arm and a boom, and we re-modeled an arm and a boom based on the topology design results and re-performed the structural analysis. The strength of the re-design is higher than the initial design but its weight is almost the same as the initial design.

• 한국식품조리과학회지
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• 제28권4호
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• pp.451-461
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• 2012

The purposes of this study were to examine the financial statements and analyze the financial soundness of contract foodservice management companies(CFMC) using the financial ratio. The statistical data analysis was completed using Microsoft Excel(ver.2007) for the trend line equation and using SPSS Win(ver.18.0) for wilcoxon-rank sum test. Increased asset, debt, capital and sales occurred in most of the CFMCs, but the financial trend of firm D decreased for operating profit and net profit. The financial ratio for investigating a firm's financial soundness was based on liquidity, stability, profitability, activity, and growth through financial statements. Most of the CFMCs had maintained outstanding financial soundness from 1999 to 2011. The financial statements during the decade were verified and fluctuated. The directly affected CFMCs by a school foodservice' sanitation accident had maintained better financial statements than those of other CFMCs. Therefore, there was opportunity for directly affecting CFMCs involved in school foodservice' sanitation accident to diversify the business portfolio of the firms.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제25권4호
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• pp.296-311
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• 2021

Topological Data Analysis (TDA), a relatively new field of data analysis, has proved very useful in a variety of applications. The main persistence tool from TDA is persistent homology in which data structure is examined at many scales. Representations of persistent homology include persistence barcodes and persistence diagrams, both of which are not straightforward to reconcile with traditional machine learning algorithms as they are sets of intervals or multisets. The problem of faithfully representing barcodes and persistent diagrams has been pursued along two main avenues: kernel methods and vectorizations. One vectorization is the Betti sequence, or Betti curve, derived from the persistence barcode. While the Betti sequence has been used in classification problems in various applications, to our knowledge, the stability of the sequence has never before been discussed. In this paper we show that the Betti sequence is unstable under the 1-Wasserstein metric with regards to small perturbations in the barcode from which it is calculated. In addition, we propose a novel stabilized version of the Betti sequence based on the Gaussian smoothing seen in the Stable Persistence Bag of Words for persistent homology. We then introduce the normalized cumulative Betti sequence and provide numerical examples that support the main statement of the paper.

• 산경연구논집
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• 제14권8호
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• pp.9-17
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• 2023

Purpose: This study is to examine how modern art museums might develop into resilient, proactive, and adaptive enterprises. That implies that this study seeks to spur meaningful change by analyzing and comprehending the numerous facets of this issue, paving the path for a long-term future for contemporary art institutions worldwide. Research design, data and methodology: To achieve the purpose of this study, the current author has reviewed numerous relevant prior studies systemically. The technique used in this study was meticulously designed to guarantee accurate data collection and analysis, providing a thorough comprehension of the subject. An organized strategy was used, including finding, reviewing, and synthesizing earlier studies. Results: Based on the investigation of the current literature analysis, this study figured out four workable business models that might increase the prosperity of modern art museums. They result from a thorough examination of previous studies and these initiatives center on improving digital presence, enhancing community participation, diversifying revenue streams, and forming powerful alliances and partnerships. Conclusions: In sum, this study concludes that the use and integration of digital technology enable museums to reach a larger audience and open up opportunities for developing cutting-edge, interactive exhibitions that reflect modern patterns of participation and communication.

• 경영과정보연구
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• 제16권
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• pp.117-137
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• 2005

Most of social service agencies experiences the lack of funds. This situation is casued mainly from the lack of donor development techniques. Therefore, the social service agencies need to develope marketing strategies to develop donors. The study was begun with the idea that a business philosophy will not conflict with professionalism, and the two can be entirely compatible, and synergistic as well. Some of the main principles of marketing can be used to construct a model that will help the social service agency devise the appropriate plan for developing donors. The social service agency's marketing plan should begin with a statement of its mission and goals and the product suggested by each goal. Social marketing process to develop voluntary contributions include marketing environment analysis, market research, selecting marketing goals and objectives, market segmentation, marketing program development, and marketing action. These techniques can be used with some modifications at each social service agency.

• 디자인학연구
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• 제13권3호
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• pp.91-100
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• 2000

인체에 대한 거부, 인체의 부재의 다양한 의미를 평면화된 의상으로 전달하고자 한 세 작품을 분석한 결과, 1) 손으로 가공한 종이 / 코트 평범한 / 평범하지 않은, 의도적인 / 우연히, 자연적인 / 인위적인 요소들의 대립을 통해 전통과 현대의 대림과 조화의 의미를 전달하고 있다. 2) 입체 /평면, 벽면 / 바닥, 상체 / 하체 둥의 요소들의 대립을 통해 인체에 대한 냉소적인 태도를 엿 볼 수 있다. 3) 안 / 밖, 하나의 드레스 / 덧입은 드레스, 완전한 평면/ 불일치의 공간은 전통적인 옷입기에 대해 새로운 방식의 옷입기를 제시하고 있다.

• 환경영향평가
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• 제2권2호
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• pp.33-39
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• 1993

Public participation in the Environmental Impact Assessment(EIA) has been implemented since the August 1 of 1991 with the Environmental Policy Act promulgation in the August 1 of 1991. It is structured to comment on draft Environmental Impact Statement(EIS) through open reviewing, public meeting and hearing. Though public participation has an important role in determining environmental significance, it is room for improvement. With positive public participation and system development such as Environmental Impact Assessment Act on June 11 of 1993, the effectiveness of it will be improved. This article is composed of status of public participation, comparison with other countries, comparison analysis by items of EIS prepared before and after public participation, and contents of public opinions in EIS.