• 말소리와 음성과학
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• 제14권3호
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• pp.103-112
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• 2022

스마트폰의 대중화로 인하여 근래 범죄의 증거자료로 제출되는 녹취 파일은 대부분 스마트폰을 통하여 생산되고 있으며, 스마트폰을 기반으로 한 녹음 파일의 무결성(위변조) 여부가 수사와 재판 과정에서 주요 쟁점으로 떠오르고 있다. 가장 높은 국내 시장 점유율을 가진 삼성 스마트폰은 통화 및 음성 녹음, 그리고 편집이 가능한 자체 음성녹음 편집 어플리케이션이 탑재되어 유통되고 있으며, 자체 어플리케이션을 통한 편집은 외부 어플리케이션을 통한 편집과 다르게 원본 파일과의 유사성이 높기에, 무결성을 입증하기 위해 더 정밀한 분석 기법 개발이 필요하다. 본 연구에서는 삼성 스마트폰 34개 기종에서 생성된 원본 녹음 파일과 자체 제공 음성녹음 편집 어플리케이션을 통한 편집 파일의 메타데이터 구조와 속성을 분석하여, 원본과 편집본 사이의 음성 파일 메타데이터 구조 및 속성 값에서 유의미한 차이가 있음을 확인하였다.

• 한국재난정보학회 논문집
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• 제16권4호
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• pp.638-649
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• 2020

연구목적: 본 연구에서는 공용년수 20년이 경과된 콘크리트 단순 슬래브교를 대상으로 하여 대상교량 구조물의 내하성능을 평가하는 것을 목적으로 하였다. 연구방법: 정적재하시험 및 동적재해시험을 수행함으로써 변위, 변형율, 충격계수, 고유진동수 값을 실측하였으며, 해석방법을 통해 평가하였다. 연구결과: 본 연구를 통해 나타난 주요 결과는 다음과 같다. 첫째, S1 최대 변위 및 최대 변형률은 각각 2.917 mm, 44.720 𝜇ε(인장), -13.760 𝜇ε(압축)로 평가되었으며, S2 최대 변위 및 최대 변형률은 각각 2.100 mm, 4.870 𝜇ε(인장)로 나타났다. 둘째, 최대 실측충격계수는 S1 A-A단면에서 0.242로 나타났으며, 최대 실측충격계수는 S2 C-C단면에서 0.198로 나타났다. 셋째, 고유진동수를 해석결과, 6.086Hz로 평가되었고, 측정결과 6.152Hz-6.738Hz의 범위로 나타났다. 결론: 시험대상 교량은 설계하중에 대하여 양호한 거동 및 특성을 보이는 것으로 평가할 수 있다.

• 한국응급구조학회지
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• 제26권3호
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• pp.161-184
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• 2022

연구 목적: 본 연구는 화재 현장에서 발생한 심정지 소방관의 소생률 향상을 위하여 화재진압대원을 위한 심폐소생술 훈련프로그램(FD-CPR)을 개발하고자 하였다. 연구 방법: 행동주의 이론을 전제로 한 FD-CPR 교수설계 모형을 3단계(분석, 설계, 개발) 절차에 따라 개발하였으며, 7명의 전문가 집단(응급의학과 교수 1인, 응급구조학과 교수 1인, 교육학과 교수 1인, 소방학교 교수 2인, 현장 활동 15년 이상 대원 2인)의 내용 타당도 검증(CVI)과 예비 실험을 거쳐 완성하였다. 연구 결과: 7개 절차로 구성된 시나리오 및 16개 항목으로 구성된 수행 능력 평가도구를 개발하였다. 평가도구의 난이도는 평균 41.16%, 변별도는 0.32로 나타나 난이도가 고르며, 변별도가 높은 것으로 확인되었다. 이후, 총 80분짜리 훈련프로그램을 개발하였고, 전문가 7인의 내용 타당도 검증 결과 1.0으로 높았다. 결 론: 본 연구를 통해 국내 처음으로 개발된 화재진압대원을 위한 기본 심폐소생술 훈련프로그램은 화재진압대원들의 심폐소생술 수행 능력 향상에 효과가 있는 것으로 나타났다. 이에 소방학교 신규 화재진압대원 교육과정에 본 프로그램을 넣게 된다면, 심폐소생술에 대한 반복훈련이 이뤄질 수 있으므로 심폐소생술의 수행 능력은 유지될 것이고, 나아가 심정지 동료의 소생률 향상에도 이바지할 수 있을 것으로 기대한다.

• 한국비블리아학회지
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• 제34권1호
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• pp.167-188
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• 2023

본 연구에서는 최근 5년 내 임용된 저경력 사서교사의 주요 현황을 조사하고, 사서교사 전문성 영역에 대한 중요도와 만족도를 파악하여 저경력 사서교사의 역량 향상을 위한 전문성 제고 방안을 제안하고자 하였다. 이를 위하여 5년 미만의 저경력 사서교사 대상으로 설문조사를 실시하여 사서교사의 양성과정과 임용 전 경험 등을 분석하였으며, 대응표본 t-검정, IPA 모델, Borich 요구도, LF 모델을 이용하여 저경력 사서교사의 전문성 영역(도서관 이용지도, 독서교육, 정보활용교육, 디지털 및 미디어 리터러시 교육, 협력수업)에 대한 인식을 파악하였다. 분석결과, 저경력 사서교사들은 모든 전문성 영역에서 중요도-만족도 간의 통계적으로 유의한 차이가 나타났다. IPA 결과, '독서교육-실행 진행'을 중요도와 만족도가 높은 '지속유지영역'으로 인식하고 있었으며, '협력수업-계획', '협력수업-진행', '협력수업-평가'와 '정보활용교육-교육과정 설계', '디지털 및 미디어리터러시 교육-실행 및 평가'를 집중노력영역으로 인식하는 것으로 나타났다. Borich 요구도에서는 '협력수업' 영역의 '교수학습 평가', '교수학습 진행', '교수학습 계획'이 가장 높은 교육적 요구를 보여주었으며, 이어서 '디지털 및 미디어 리터러시 교육'과 '정보활용교육' 영역순으로 나타났다. LF 모델에서도 '협력수업' 영역이 최우선 영역에 포함되는 것으로 나타났으며, '디지털 및 미디어 리터러시 교육-실행, 평가', '정보활용교육-실행 평가', '정보활용교육-교육과정, 설계'의 5가지 역량이 우선순위가 높은 영역으로 나타났다. 본 연구의 결과는 교원으로서의 사서교사의 전문성을 재고하는데 시사점을 제공할 수 있을 것이다.

• 한국프랜차이즈경영연구
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• 제13권2호
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• pp.17-31
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• 2022

Purpose: With the development of the Internet, consumers can quickly access the electronic word-of-mouth. Consumers seek to reduce uncertainty by referring to the opinions of other consumers about products and services when making purchase decisions. In the food service industry, evaluating a restaurant before an actual visitation is difficult. Therefore, electronic word-of-mouth is important to interact with the customer in restaurants. as it can be used as an exchange of information in which consumers participate and interact with other customers. This study was conducted to verify how online word-of-mouth characteristics (Consensus, Vividness, Neutrality) on attitudes and visit intention from the perspective of social exchange theory. And it was performed to verify the structural relationship between short-term visit intention, mid-term visit and long-term visit intention. Research design, data, and methodology: A survey was conducted on customers who have visited restaurants. Of a total of 312 responses, 306 responses were used, excluding insincere responses and missing values for factors analysis. SPSS 25.0 and AMOS 25.0 were used for statistical analysis, and hypothesis testing was conducted after verifying the validity and reliability of the questionnaire items. Result: The result of the analysis showed that, consensus and neutrality have a positive effect on attitude but not much on vividness. In addition, consensus, vividness, and neutrality have no effect on the short-term visit intention. Finally, the short-term visit intention has a positive effect on mid-term visit intention, and mid-term visit intention has a positive effect on long-term visit intention. Conclusions: Based on the results, this study suggested that it is necessary to have practical implications for marketing and monitoring restaurant reviews in consideration of the characteristics of electronic word-of-mouth. When managing electronic-word-of-mouth, it is necessary to manage the consensus and neutrality is essential to provide sufficient information about the restaurant. The focus should not only be on vividness, such as photos and videos. In addition, restaurants should also provide a good experience for first-time visitors as the short-term visit intention positively affects mid-term and long-term visit intention.

• 한국프랜차이즈경영연구
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• 제13권2호
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• pp.53-66
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• 2022

Purpose: How to build the attitude on brand is very important, because it affects the positive word of mouth and revisit intention. Brand attachment, brand name, and image congruence play important role on consumer behavior in terms of reinforcing consumers' perception of food service companies and differentiating them from competing brands. Following the planned behavior theory, this paper examines the effect of linking brand attitude to word-of-mouth and revisit intentions in the restaurant sector. Research design, data, and methodology: This paper examines the structural relationship among brand attachment, brand name, image congruence, brand attitude, WOM, and revisit intention. In order to test the purposes of this study, research model and hypotheses were developed. The questionnaire items were modified and used according to the content of this study based on previous studies. All constructs were measured by multiple items tested and developed in the previous research. The study is based on the quantitative method and considered 519 questionnaires fulfilled by customers of restaurants. The data were explored employing the partial least square-structural equation modelling (PLS-SEM). Frequency analysis was conducted to identify the general characteristics of the survey subjects. To measure the reliability and validity of the measurement tools, confirmatory factor analysis was conducted. Structural model analysis was conducted to verify the research model. Result: The findings demonstrate that brand attachment and brand name had positive effects on attitude while image congruence did not have. Also, attitude had positive effect on WOM and revisit intention. Conclusions: This study expands the literature about WOM and revisit intentions. This study expands prior research in a similar field to which the theory of planned behavior (TPB) is applied, and reveals that brand attachment, brand name, and brand image congruence play an important role in developing brand attitude that affect revisit intention and WOM. And provide guidelines on how to enhance competitiveness in the restaurant sector based on understanding of linking brand attitude to customer loyalty and repeat business. By putting into practice these suggestions in the restaurant industry, brands can easily build up their attitude and boost a positive WOM and the intention to revisit.

• 한국재료학회지
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• 제32권4호
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• pp.200-209
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• 2022

In this study, defects generated in the YSZ coating layer of the IN738LC turbine blade are investigated using an optical microscope and SEM/EDS. The blade YSZ coating layer is composed of a Y-Zr component top coat layer and a Co component bond coat layer. A large amount of Cr/Ni component that diffused from the base is also measured in the bond coat. The blade hot corrosion is concentrated on the surface of the concave part, accompanied by separation of the coating layer due to the concentration of combustion gas collisions here. In the top coating layer of the blade, cracks occur in the vertical and horizontal directions, along with pits in the top coating layer. Combustion gas components such as Na and S are contained inside the pits and cracks, so it is considered that the pits/cracks are caused by the corrosion of the combustion gases. Also, a thermally grown oxide (TGO) layer of several ㎛ thick composed of Al oxide is observed between the top coat and the bond coat, and a similar inner TGO with a thickness of several ㎛ is also observed between the bond coat and the matrix. A PFZ (precipitate free zone) deficient in γ' (Ni₃Al) forms as a band around the TGO, in which the Al component is integrated. Although TGO can resist high temperature corrosion of the top coat, it should also be considered that if its shape is irregular and contains pore defects, it may degrade the blade high temperature creep properties. Compositional and microstructural analysis results for high-temperature corrosion and TGO defects in the blade coating layer used at high temperatures are expected to be applied to sound YSZ coating and blade design technology.

• 문화기술의 융합
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• 제8권6호
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• pp.97-105
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• 2022

본 연구는 불확실한 프로젝트 기업에 대한 투자시 시민에 대한 신뢰성, 그리고 사회성과보상 사업(SIB)과 IT 공유경제를 다룬다. 이는 세 분야의 융합을 통해서 경제적 효과와 사회적 안전의 투자 불평등을 해소할 수 있게 한다. 성공적으로 정보와 교류 활성화되는 전반적인 SIB(Social Impact Bond)과정의 모델 활성화한다. 그 실증적으로 사회적 IT서비스 금융에 대한 운영과 기법을 제시하여, 사회적성과 보상사업으로 혁신 생태계를 어떻게 만들 수 있을지를 검토한다. 이에 대한 분석으로 소규모 공유 기관이나 시민들이 직접적으로 참여하여 민간 투자자와의 연계능력을 조성하고, 비공유의 참여 장벽을 인식에 대한 가능성을 파악하고, 불확실한 분야에 대한 IT 공유 사업시, 시민 신뢰가 IT 사업의 큰 영향을 보여준다. 본 결과로 서울시가 추진한 사회적 공유와 IT협력을 위해서, 본 사업이 직접 설계 능력을 갖추기에 앞서, 사업 기획시 신뢰성과 안전성으로 책임을 지게 된다. 그래서 비공유시민들도 효과적으로 구성되고 창출된 플랫폼을 참여할 수 있다.

• 한국프랜차이즈경영연구
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• 제13권1호
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• pp.35-46
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• 2022

Purpose: With the rapid changes in the technical development and the trend of consumption trend, the convenience store industry is facing an unprecedented competitive situation in the consumption environment where the boundary between online and offline is broken due to the stagnation of offline distribution channels and the spread of online shopping. The biggest innovation strategy of the major convenience store brands in recent years are introducing the O2O (Online to Offline) platform and presenting new products and services beyond the boundaries of online and offline to transform themselves into Omni Channel stores. The study is designed to analyze the effect of innovativeness of convenience store as a stimulus in O2O platform which customers perceive on store loyalty, the final response to external stimuli, through customer engagement with convenience store brands. Specifically, the innovativeness of convenience stores was divided into types of core activities in corporate marketing and focused on innovations in services, products(proposals), promotions and experiences. Research design, data, and methodology: Various hypotheses have been developed to achieve this research purpose. The data were collected from 1,128 questionnaires the age between 15 and 60 who had experience using retail store apps and delivery apps and were analyzed using SPSS 22.0 and SmartPLS 3.3.7 program. Measurement model analysis was carried out to assess convergent and discriminant validity. Also, common method bias was tested using the values of VIF (variance inflation factor). The hypotheses were tested using structural equation modeling with SmartPLS 3.3.7 program. Results: First, service innovation has a positive effect on cognitive engagement. Second, product, promotion and experience innovation have a positive effect on cognitive and affective engagement. Third, cognitive influences affective engagement. Finally, both cognitive and affective engagement affect store loyalty, but affective engagement has a stronger effect on store loyalty than cognitive engagement. Conclusions: All four types of innovation and cognitive engagement have a positive effect on emotional engagement, which has a stronger effect on store loyalty than cognitive engagement. Thus, while innovation can build loyalty through emotional engagement, innovation strategies must be designed and pursued with caution in terms of impact through cognitive engagement may not achieve the planned goals.

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.153-162
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• 2022

Relevance. Innovative activities in education should be aimed at ensuring the comprehensive development of the individual and professional development of students. The main idea of modular technology is that the student should learn by himself, and the teacher manages his learning activities. The advantage of modular technology is the ability of the teacher to design the study of the material in the most interesting and accessible forms for this part of the study group and at the same time achieve the best learning results. Innovative Moodle technology. it is gaining popularity every day, significantly expanding the space of teaching and learning, allowing students to study inter-faculty university programs in depth. The purpose of this study is to assess the quality of implementation of the e-learning system Moodle. The study was conducted at the South Ukrainian National Pedagogical University named after K. D. Ushinsky in order to identify barriers to the effective implementation of innovative distance learning technologies Moodle and introduce a new model that will have a positive impact on the development of e-learning. Methodology. The paper used a combination of theoretical and empirical research methods. These include: scientific analysis of sources on this issue, which allowed us to formulate the initial provisions of the study; analysis of the results of students 'educational activities; pedagogical experiment; questionnaires; monitoring of students' activities in practical classes. Results. This article evaluates the implementation of the principles of distance learning in the process of teaching and learning at the University in terms of quality. The experiment involved 1,250 students studying at the South Ukrainian National Pedagogical University named after K. D. Ushinsky. The survey helped to identify the main barriers to the effective implementation of modern distance learning technologies in the educational process of the University: the lack of readiness of teachers and parents, the lack of necessary skills in applying computer systems of online learning, the inability to interact with the teaching staff and teachers, the lack of a sufficient number of academic consultants online. In addition, internal problems are investigated: limited resources, unevenly distributed marketing advantages, inappropriate administrative structure, and lack of innovative physical capabilities. The article allows us to solve these problems by gradually implementing a distance learning model that is suitable for any university, regardless of its specialization. The Moodle-based e-learning system proposed in this paper was designed to eliminate the identified barriers. Models for implementing distance learning in the learning process were built according to the CAPDM methodology, which helps universities and other educational service providers develop and manage world-class online distance learning programs. Prospects for further research focus on evaluating students' knowledge and abilities over the next six months after the introduction of the proposed Moodle-based program.