• Journal of Korean society of Dental Hygiene
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• v.17 no.3
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• pp.465-478
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• 2017

Objectives: The purpose of this study was to investigate the relationship between the level of subjective stress recognition and oral symptom experiences including toothache, gum diseases, and oral soft tissue diseases in the Korean adolescents. Methods: The subjects were 68,043 adolescents recruited using a web-based survey, National Korean Youth Risk Behavior in 2015 by the Korean Center for Disease Control. For statistical analysis, SPSS 21.0 for Windows was used. Descriptive analysis and a Chi-square test were conducted to determine the factors associated with general characteristics, health behaviors, oral health behaviors, and level of subjective stress recognition. Finally, to investigate the relationship between the level of subjective stress recognition and oral symptom experiences, logistic regression analysis was performed. Results: Toothache related subjective stress recognition level was significantly higher in the moderate group with the score of 1.59 (95% CI; 1.49-1.68), and was greater in the high group with 2.38 (95% CI; 2.24-2.53) compared to the low group. Gum disease related subjective stress recognition level was significantly higher in the moderate group with 1.41 (95% CI; 1.32-1.51), and was greater in the high group with 1.99 (95% CI; 1.86-2.13). Oral soft tissue disease related subjective stress recognition level was significantly higher in the moderate group with 1.59 (95% CI; 1.45-1.74), and was greater in the high group with 2.55 (95% CI; 2.33-2.79). Bad breath related subjective stress recognition level was significantly higher in the moderate group with 1.48 (95% CI; 1.39-1.57), and was greater in the high group with 2.10 (95% CI; 1.97-2.25). Conclusions: Higher subjective stress recognition level was found to affect the oral symptoms experienced. Therefore, the stress management plan should be prepared through the cause identification of the main stress in the adolescents. Practical and systematic education is needed for oral health management in the schools.

• Journal of dental hygiene science
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• v.9 no.5
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• pp.571-577
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• 2009

This research basically work on oral health condition of the diabetes patients with data from 2006 National oral Health Survey. Based on this data, this research will provide basic materials about developing program with necessity of Recognition and education of the oral health condition. Analysis with using SPSSWIN 12.0 makes some results on the below. First, Existence and nonexistence based on age division shows result that over 70 years old gets 39.8%, which is highest percentage(p<0.05). Second, In existence and nonexistence based on sex distinction and age division, Women gets higher percentage (60.8%) than percentage of the men (39.2%). Third. Both diabetes patient and control group answered 'unhealthy' about subjective recognition of the oral health condition. Forth, percentage of caries on permanent tooth 12 92.0% for diabetes patient (p<0.05). Fifth, Answer about periodontal structure of diabetes patient is 88.9% of blooding periodontal structure(p<0.05). Sixth, Result of the demand of caries and periodontal structure treatment from diabetes patients show that diabetes patient does not feel necessity about treatment although they gets hardship of chewing. Also, it does not show any statistical difference. Seventh, Results of the oral health practice based on demographic characteristics are eating snack(highest answer). Latest visiting dental hospital before 1 year ago, or long before this. Frequencies of brushing tooth are less than 3 times. Also, il does not show any statistical difference.

• Science of Emotion and Sensibility
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• v.24 no.1
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• pp.25-36
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• 2021

This study examines the characteristics of public design evaluation and sensibility evaluation of the media facade, Daejeon Skyroad. The subjects were asked to watch the Daejeon Skyroad media facade video and then respond to the sensibility evaluation items comprising emotional vocabulary and the public design evaluation items of the media facade. The mean comparison of the public design evaluation results of Daejeon Skyroad with demographic variables was conducted, factor structure of the emotional vocabulary was derived, and correlation with the public design evaluation factors was conducted using the emotional vocabulary included in each factor. The results indicated that public design evaluation items showed some differences and trends depending on the subjects' gender, age, and whether they experienced media facade. Meanwhile, 14 vocabulary words were composed of four-factor structures, and "comfortable-uncomfortable" was found to be a common relevant emotional vocabulary across all public design evaluation factors. This suggests that sensibilities that are perceived as comfort subjectively are the primary value of the media facade, Daejeon Skyroad, as a public design. However, the value as a public design can be further improved if the Daejeon Skyroad is operated as a policy considering that gender and age are reflected.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.39 no.3
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• pp.179-186
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• 2021

In general, the daily safety inspection activities, which investigate damages in structures and measures the size of the damage, have been relied heavily on the visual inspection so far. Since the probe of the condition and performance of facilities by such personnel is often dependent on the subjective judgment of the investigator, the consistency and repeatability of the probing results may reduce. Particularly, damage located in a difficult-to-reach place depends mainly on experience with the naked eye, and an unsafe method using a ladder has mainly applied when necessary. Therefore, in this study, we tried to propose a way of using images that can reduce the deviation between safety inspection investigators, enhance objectivity, and improve the safety of workers. In this study, we have applied homographic transformation as a method of correcting the image. As a result of analyzing the size of the damage in the corrected image of the test subject, it confirms that the accuracy of measuring the magnitude of the damage can satisfy the target levels of 5.0mm and 0.005m², the target accuracy levels. As a result of the field verification test to which the proposed image correction technique applied, the coefficient of variation of the crack length in the structure decreased from 5.4~7.0% to 0.072~0.12%, and that of the damaged area from 10.9% to 1.6%. It confirms that the measurement accuracy is improved. Therefore, it is expected that this study on the image utilization technique in safety inspection activities can increase the accuracy of damage measurement and improve the reliability of the safety inspection reports and exterior survey drawings.

• Journal of Korea Society of Industrial Information Systems
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• v.25 no.6
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• pp.47-54
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• 2020

The acupressure is a treatment that applies pressure to certain parts of the body and has been mainly used for pain relief in the field of oriental medicine. However, the treatment effect is often different depending on the practitioner's ability, experience, and physical strength, so standardized acupressure is needed. In this regard, the equipment is being released, but this is mainly a rolling massage method, which reduces energy concentration and poses a risk of injury. Therefore, in this study, a device that provides vertical acupressure based on variable bogie (wheel truck) was implemented. As a result of experimenting with load and body pressure distribution and desirability to validate the device's bearing pressure, the acupressure rod held up to 150kg, the body pressure ratio was measured lower than the body pressure ratio of the comparison item in section 0%

• The Journal of the Korea Contents Association
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• v.20 no.8
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• pp.583-597
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• 2020

This study analyzed how elderly people's perception of social welfare affects social welfare service and social welfare policy satisfaction by paying attention to the use of social welfare services and satisfaction with social welfare policies. In order to achieve this research goal, 465 people aged 60 or older who completed responses to the additional survey were collected and analyzed as research targets based on data from the Korea Welfare Panel, which is accumulated by the Korea Institute for Health and Social Affairs and Seoul National University's Social Welfare Research Institute. The results of this study are as follows. First, "Awareness of welfare for the elderly (recognition of welfare expenditure, recognition of welfare targets, recognition of welfare tax increases)" was found to have a negative impact on "use of social services." Second, "Awareness of welfare for the elderly (recognition of welfare expenditure, recognition of welfare targets, recognition of welfare tax increases)" was found to have a negative impact on "satisfaction with social welfare policies." Third, the impact of the recognition of welfare for the elderly on the use of social services was found to be different according to the demographic characteristics (education level, income level, educational background, gender). Fourth, according to the "population statistical characteristics (education level, income level, educational background, gender)" the impact of the recognition of welfare for the elderly on the satisfaction of social welfare policy was shown to be different. The implications of this study are that we looked at multi-dimensional welfare awareness and social service use experience together as factors affecting social welfare policy satisfaction. In other words, it is meaningful that the government focused on welfare awareness based on individual values and subjective perceptions as an influence on social welfare policy satisfaction, and sought practical alternatives to welfare policies and welfare sites by examining whether the experience of using social services in relation to welfare awareness and social welfare policy satisfaction among the elderly.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.14 no.1
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• pp.187-198
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• 2019

The purpose of this study is to seek ways of utilizing TLBMC by understanding business model of social ventures that are accompanied by social and environmental as well as economic missions. In order to achieve this, business models from economic, environmental and social perspectives will be analyzed, and we seek to enhance sustainability of social venture entrepreneurs. As the analysis tool, TLBMC(Triple Layered Business Model Canvas) expands upon the business model canvas that is widely utilized and recognizes economical terms. The TLBMC is proposed by Joyce, A., & Paquin, R. L.(2016) to help achieve a holistic view with horizontal and vertical associations. The study tries to overcome limitations of previous studies and observe a variety of economic, environmental, and social perspectives that social ventures should have with the TLBMC. As a result, it has the following implications; Firstly, creating separate social, environmental and economic business model canvas helps a business to have a holistic approach. Secondly, it was found that social venture characteristics of environmental and social perspectives were applied in practice. Lastly, we have established experience data on social venture business model. This study focuses on the opinions, the meanings and the subjective views of the participants. As a result, conclusions are drawn by the researchers ' assertions and has limitations as a research on case studies. However, this study will help people who are preparing or studying social ventures to have economic, environmental, and social perspectives. Also, redefinition of the direction and value of entrepreneurs operating social ventures, such as vision and mission, will help clarify the roles and responsibility of organizations. As a fundamental step for future empirical studies, this study could be the base for social venture business model studies.

• Archives of design research
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• v.17 no.2
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• pp.279-288
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• 2004

Corporate design activities have expanded from being exclusive and passive responsibilities to active participation in planning, marketing, technology and corporate brand image differentiation for successful business. Thus the communications between designers and other functions come to include critical decision making, information sharing, and objective reasoning. Given that design activities now have to involve various functions in product development, the styling-related design process, which is still developed by designer's intuition and experience, poses as an obstacle not just between various functions involved, but even within the design function. To overcome this obstacle and to lead more effective design decision process, a means for product form development assessment and management is necessary. This research proposes a foundation for managing and assessing product form based on the hypothesis and demonstration of discovering a system of formative factor and order a product form expresses that can be shared as an objective and logical system. As a result of this demonstration, the form as a unique visual expression and the factors related to the form and its co-relationship are examined. The factors are called formative parameters and the system is named as the product form alignment method. Based on the logic derived from the system, the process for developing an image that aligns with the predefined goal is explained. The method defines a balance between a designer's intuitive creativity and the extracted logic, which can act as a basis for designers to share design language among themselves and for communication between design and other functions. Based on this system, designers are able to align design work with the set goal, and focus and limit the range of form development, which is anticipated to result in lead-time reduction and minimizing unnecessary obstacles and mistakes.

• Journal of Korean Tunnelling and Underground Space Association
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• v.23 no.6
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• pp.469-484
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• 2021

Rock mass classification results have a great influence on construction schedule and budget as well as tunnel stability in tunnel design. A total of 3,526 tunnels have been constructed in Korea and the associated techniques in tunnel design and construction have been continuously developed, however, not many studies have been performed on how to assess rock mass quality and grade more accurately. Thus, numerous cases show big differences in the results according to inspectors' experience and judgement. Hence, this study aims to suggest a more reliable rock mass classification (RMR) model using machine learning algorithms, which is surging in availability, through the analyses based on various rock and rock mass information collected from boring investigations. For this, 11 learning parameters (depth, rock type, RQD, electrical resistivity, UCS, V_p, V_s, Young's modulus, unit weight, Poisson's ratio, RMR) from 13 local tunnel cases were selected, 337 learning data sets as well as 60 test data sets were prepared, and 6 machine learning algorithms (DT, SVM, ANN, PCA & ANN, RF, XGBoost) were tested for various hyperparameters for each algorithm. The results show that the mean absolute errors in RMR value from five algorithms except Decision Tree were less than 8 and a Support Vector Machine model is the best model. The applicability of the model, established through this study, was confirmed and this prediction model can be applied for more reliable rock mass classification when additional various data is continuously cumulated.

• 한국벤처창업학회:학술대회논문집
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• 2018.04a
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• pp.177-180
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• 2018

최근 4차 산업혁명 시대라 하여 새로운 기술들이 등장하고 기술들이 융합되면서 새롭고 혁신적인 산업과 서비스가 창출되고 있다. 이러한 시대에 청소년들의 새로운 아이디어와 기술은 4차 산업혁명에 맞는 새로운 성장 동력을 확보할 수 있을 것이라고 여겨진다. 4차 산업의 혁명이 요청되는 이 시기에 산업을 견인할 수 있는 길은 창업의 길이다. 따라서 창업을 통해 4차 산업혁명을 이끌어갈 수 있는 인재가 무엇보다도 필요하다. 청소년들은 학교 프로그램을 통해 다양한 창업교육을 접하고 있으며, 공공기관의 대표적인 창업교육은 중소벤처기업부(구 중소기업청)가 주관하고 있는 BizCool이 있다. 교육부에서 중학생들에게 자유학기제를 2016년 1월 1일부터 실시하고 있으며 BizCool 교육을 통한 창업, 진학, 취업의 우수 사례들이 등장하면서 2017년 현재 대한민국 약 500여개의 학교에서 중소벤처기업부의 지원을 받아 BizCool 교육이 진행 되고 있다. BizCool은 청소년들의 기업가정신 함양 및 모의 창업 교육을 통해 확고한 경제관념을 형성하고 꿈 끼 도전정신 진취성을 갖춘 '융합형 창의인재' 양성을 목적으로 한다. 본 논문은 중학교 자유학기제를 통한 창업교육이 학생들에게 긍정적 사고와 학습성취도에 미치는 관계에 대해 연구하는데 목적을 두었다. 이 목적을 달성하기 위하여 대전광역시교육청에서 자유학기제 BizCool 교육을 받는 3개 학교를 선정하였고 갑천중, 도안중, 문정중 3개 학교의 창업교육 담당교사의 도움을 받아 창업교육 참가 학생을 대상으로 설문조사를 실시하여 연구결과를 분석하였다. 실증분석결과, 첫째, 창업교육은 학생들의 긍정적 사고에 양의 영향을 미친다는 것을 확인하였다. 둘째, 창업교육은 학생들의 학습성취도에 양의 영향을 미친다는 것을 제시하였다. 셋째, 창업교육은 학생들의 학습성취도에 긍정적 사고가 매개효과를 미친다는 것을 분석하였다. 본 연구에서 시사하는 바는 다음과 같다. 첫째, 연구결과 자유학기제 창업교육은 학생들에게 학습성취도를 높여 주었다. 따라서 학생들에게 도움이 되는 BizCool 교육을 전국 초, 중, 고등학교 11,733개교에 확산시켜 체계적으로 습득 할 수 있는 환경이 조성되어야 할 것이다. 둘째, 연구결과 창업교육은 긍정적 사고에 영향을 미쳤다. 전기숙(2016)에 따르면 청소년의 행복에 있어서 긍정적인 대인관계가 가장 중요한 요인이 된다고 하였다. BizCool 교육을 통해 사람과 팀의 소중함을 깨달으며 소통하는 법을 노력한다면 바른 인성을 갖춘 창의성 높은 학생들로 성장할 것이다. 셋째, 연구결과 창업교육의 학습성취도는 긍정적 사고를 가지고 있는 학생들에게 더욱 높게 나타났다. 긍정적 사고를 가지고 자신감 있게 매사 행동해 나간다면 학생들은 성취로 인한 만족감을 느끼며 행복한 학교생활을 해나갈 수 있고 BizCool 교육과 함께 멋진 미래를 만들어 갈 것이다. 본 연구에서 한계점은 다음과 같다. 첫째, 특정 지역, 특정 학교를 대상으로 실시하였기 때문에 표본의 수가 제한적이므로 전체를 대표하기에는 제약이 있다. 둘째, 긍정적 사고는 학생들의 환경과 상황에 따라 달라질 수 있으므로 연구 대상자의 조건 면에서 한계가 있다. 셋째, 중학교 자유학기제 창업교육의 체계화가 미비하다. 학교에서 창업교육을 하는 담당 교사는 창업 경험이 풍부하지 않기 때문에 창업교육 전문가가 필요하며 국가기관과 기업 등이 연계한 학습 형태를 구축하여 더 활발하고 현장감 있는 창업교육이 실시되기를 바란다.