기본심리욕구와 학습참여가 대학생의 창의적 인재 역량에 미치는 영향

한윤영(Han, Yunyoung),김은경(Kim, Eunkyung) 학습자중심교과교육학회 2020 학습자중심교과교육연구 Vol.20 No.1

본 연구는 대학생의 인지적, 정의적, 사회적 특성을 포함하는 창의적 인재 역량에 기본심리욕구와 학습참여가 어떻게 영향을 미치는지 살펴보는 것을 목적으로 한다. S대학의 재학생을 대상으로 이루어진 온라인 설문조사에서 응답한 1,230명의 자료를 바탕으로 상관분석과 다중회귀분석을 실시하였다. 측정변인간 정적 상관관계를 충족하였으며, 학습자의 기본심리욕구와 학습참여가 창의적 인재역량에 유의하게 영향을 미치는 것으로 나타났다. 기본 심리욕구와 학습참여가 인지적 특성, 정의적 특성, 사회적 특성의 순으로 상대적으로 큰 영향력을 보고하였고, 하위 변인들도 창의적 인재 역량의 인지적, 정의적, 사회적 특성에 유의한 영향을 미쳤다. 이는 인지적, 정의적, 사회적 특성을 포함하는 창의적 인재 역량 증진을 위해서 학습자의 기본심리욕구에서 유능감, 자율성, 관계성 모두가 고려된 적극적인 학습참여를 위한 교육환경이 조성될 필요가 있다는 것을 시사한다. The importance of improving university students creative leader competencies is being emphasized due to changes in competency based curriculum. The goal of this study was to investigate the effect of basic psychological need and student engagement on creative leader competency including cognitive, affective, social characteristics. 1,230 student data from S university were analyzed be conducting correlation, multiple regression analysis. The basic psychological needs of learners and student engagement have been shown to significantly affect creative leader competency. The basic psychological needs of learners and student engagement have reported relatively great influence in the order of cognitive, affective and social characteristics of creative leader competency. It was found that learner s basic psychological needs and student engagement significantly affect the creative leader competency corresponding to dach characteristics. These results suggest that there is a need to create an educational environment for active participation with considering learner s basic psychological needs such as competence, autonomy, and relatedness in order to enhance creative leader competency.

학습자 중심 수업 척도 개발 및 타당화

한윤영(Han, Yunyoung),김은경(Kim, Eunkyung) 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.23

학습자 중심의 수업은 학생 역량을 향상시키기 위한 교육혁신에서 그 중요성이 강조되고 있다. 본 연구는 대학교육이 학습자 중심 패러다임으로 변화하는 흐름에 따라 대학에서 학습자 중심 수업을 측정할 수 있는 척도를 개발하고 타당화 하는 것 을 목적으로 하였다. 이를 위해 선행연구를 토대로 교수학습목표, 교수학습활동, 교수자태도로 구성되는 3요인 학습자 중심 수업 척도 모형을 설정하고, S 대학교 학생 317명을 대상으로 검사를 실시하였다. 탐색적, 확인적 요인분석, 상관분석, 판별분석, 신뢰도 분석을 활용하여 학습자 중심 수업 척도의 내·외적 타당성을 확보하고 신뢰로운 척도임을 확인하였다. 학습자 중심 수업 척도는 교수자들에게 어떻게 수업을 조성했는가를 인식하게 하는 지침이 될 수 있으며 교육 현장에서 학습자 중심 수업이 이루어지도록 하는데 기여할 것이다. The importance of creating learner centered instruction is being emphasized in educational innovation to foster the college student competency. The goal of this study was to develop and validate learner centered instruction scale in university in accordance with the changing trend of university education into a learner-centered paradigm. The three elements of the instruction goal, teaching learning activity, and teacher attitude are set up based on the preceding study. 317 student data from S university were analyzed be conducting exploratory, confirmed factors analysis, correlation analysis, discriminative analysis, and reliability analysis, It was revealed that internal and external validity of the learner centered instruction scale was verified. Learner centered instruction scale can be a guide for professors to recognize how learner centered instruction was created and will contribute to creating a learner centered instruction in university. The practical uses of learner centered instruction scale were discussed.

창의적 문제발견 능력 측정을 위한 언어, 수, 도형의 재구조화 연합검사 개발 및 타당화

한윤영(Han, YunYoung) 한국창의력교육학회 2018 창의력교육연구 Vol.18 No.3

이 연구는 기존의 확산적 사고 측정방법으로 문제발견능력을 측정하는 것에 대한 문제점을 제기하고, 통찰적 사고 기제인 재구조화를 활용한 대안적 문제발견능력 검사도구를 개발하고 타당화하였다. 문제발견을 통찰적 사고의 기제인 재구조화로 설명하는 이론적, 경험적 연구를 근거로 문제발견 능력 문항을 개발하고, 내․외적 타당성을 검증하였다. 내적 타당성을 위해 대학생을 대상으로 한 예비조사(n=350), 본조사(n=683)의 자료로 요인분석을 활용하여 언어, 수, 도형 세 요인으로 구성된 문제발견 능력검사의 구인 타당성을 검증하였다. 외적 타당성을 위해 기존의 공인된 문제발견 능력검사 K-RAT 와의 상관분석을 활용하여 수렴 타당성을 검증하고, 다중회귀분석을 활용한 분석문제와는 구분될 수 있는 인지능력변인들의 설명력 검증을 통해 수렴적 사고와 확산적 사고 모두를 요구하는 문제발견 능력의 변별 타당성을 검증하 였다. 이 연구는 창의적 문제발견 능력을 통찰적 사고의 기제인 재구조화로 재해석하고 구체 화하였다는 점에서 문제발견 연구범위를 확장함과 동시에 그 차별적 가치를 지닌다. This research raised the problem of measuring the problem finding ability by using the existing divergent thinking measurement method and developed and validated the alternative problem finding ability test utilizing the restructuring which is the insight thinking mechanism. Based on the theoretical and empirical studies that problem finding can be explained by insightful thinking, we developed problem finding measurement items and verified internal and external validity. For internal validity, the validity of the test for the problem finding ability test consisting of three factors of language, number, and figure was verified by using the factor analysis as the data of the preliminary survey (n = 350) and the main survey (n = 683). For external validity, the validity of the convergence validity is examined by using the correlation analysis with the existing authorized problem finding test K-RAT and to test the discriminant validity of the problem finding as an insight problem requiring both convergent thinking and divergent thinking, And multiple regression analysis was used to verify the explanatory power of cognitive ability variables. This research extends the scope of problem finding research and has its discriminative value in that it reinterprets and realizes creative problem solving ability as a restructuring which is the basis of insight thinking.

홈트레이딩 시스템 서비스의 보안 취약점 분석 및 평가기준 제안

이윤영(Yunyoung Lee),최해랑(Haelahng Choi),한정훈(Jeonghoon Han),홍수민(Sumin Hong),이성진(Sungjin Lee),신동휘(Donghwi Shin),김승주(Seungjoo Kim),원동호(Dongho Won) 한국정보보호학회 2008 정보보호학회논문지 Vol.18 No.1

증권시장이 커짐에 따라 홈트레이딩시스템(Home Trading System)을 이용한 증권거래가 활발해지고 있다. HTS는 주식시세 조회를 비롯한 매매상담 등의 많은 기능을 제공하고 있다. 그러나 사용자의 편의성과 효용성을 중심으로 한 기능은 개발되고 적용되고 있지만 개인정보 및 거래의 안전성에 대한 보안기능은 미흡한 실정이다. 본 논문은 키로깅과 스니핑을 통해 HTS의 보안서비스를 분석하여 많은 개인정보가 노출됨을 설명한다. 그리고 취약점을 파악하여 HTS가 가져야할 바람직한 평가기준을 제시한다. As stock market gets bigger, use of HTS(Home Trading System) is getting increased in stock exchange. HTS provides lots of functions such as inquiry about stock quotations, investment counsel and so on. Thus, despite the fact that the functions for convenience and usefulness are developed and used, security functions for privacy and trade safety are insufficient. In this paper, we analyze the security system of HTS service through the key-logging and sniffing and suggest that many private information is unintentionally exposed. We also find out a vulnerable point of the system, and show the advisable criteria of secure HTS.

Sector Based Scanning and Adaptive Active Tracking of Multiple Objects

( Shung Han Cho ),( Yunyoung Nam ),( Sangjin Hong ),( Weduke Cho ) 한국인터넷정보학회 2011 KSII Transactions on Internet and Information Syst Vol.5 No.6

This paper presents an adaptive active tracking system with sector based scanning for a single PTZ camera. Dividing sectors on an image reduces the search space to shorten selection time so that the system can cover many targets. Upon the selection of a target, the system estimates the target trajectory to predict the zooming location with a finite amount of time for camera movement. Advanced estimation techniques using probabilistic reason suffer from the unknown object dynamics and the inaccurate estimation compromises the zooming level to prevent tracking failure. The proposed system uses the simple piecewise estimation with a few frames to cope with fast moving objects and/or slow camera movements. The target is tracked in multiple steps and the zooming time for each step is determined by maximizing the zooming level within the expected variation of object velocity and detection. The number of zooming steps is adaptively determined according to target speed. In addition, the iterative estimation of a zooming location with camera movement time compensates for the target prediction error due to the difference between speeds of a target and a camera. The effectiveness of the proposed method is validated by simulations and real time experiments.

Locally Initiating Line-Based Object Association in Large Scale Multiple Cameras Environment

( Shung Han Cho ),( Yunyoung Nam ),( Sangjin Hong ),( Weduke Cho ) 한국인터넷정보학회 2010 KSII Transactions on Internet and Information Syst Vol.4 No.3

Multiple object association is an important capability in visual surveillance system with multiple cameras. In this paper, we introduce locally initiating line-based object association with the parallel projection camera model, which can be applicable to the situation without the common (ground) plane. The parallel projection camera model supports the camera movement (i.e., panning, tilting and zooming) by using the simple table based compensation for non-ideal camera parameters. We propose the threshold distance based homographic line generation algorithm. This takes account of uncertain parameters such as transformation error, height uncertainty of objects and synchronization issue between cameras. Thus, the proposed algorithm associates multiple objects on demand in the surveillance system where the camera movement dynamically changes. We verify the proposed method with actual image frames. Finally, we discuss the strategy to improve the association performance by using the temporal and spatial redundancy.

Multiple Camera Collaboration Strategies for Dynamic Object Association

( Shung Han Cho ),( Yunyoung Nam ),( Sangjin Hong ) 한국인터넷정보학회 2010 KSII Transactions on Internet and Information Syst Vol.4 No.6

In this paper, we present and compare two different multiple camera collaboration strategies to reduce false association in finding the correspondence of objects. Collaboration matrices are defined with the required minimum separation for an effective collaboration because homographic lines for objects association are ineffective with the insufficient separation. The first strategy uses the collaboration matrices to select the best pair out of many cameras having the maximum separation to efficiently collaborate on the object association. The association information in selected cameras is propagated to unselected cameras by the global information constructed from the associated targets. While the first strategy requires the long operation time to achieve the high association rate due to the limited view by the best pair, it reduces the computational cost using homographic lines. The second strategy initiates the collaboration process of objects association for all the pairing cases of cameras regardless of the separation. In each collaboration process, only crossed targets by a transformed homographic line from the other collaborating camera generate homographic lines. While the repetitive association processes improve the association performance, the transformation processes of homographic lines increase exponentially. The proposed methods are evaluated with real video sequences and compared in terms of the computational cost and the association performance. The simulation results demonstrate that the proposed methods effectively reduce the false association rate as compared with basic pair-wise collaboration.

Prevalence and Characteristics of Salmonella spp. Isolated from Raw Chicken Meat in the Republic of Korea

( Youngho Koh ),( Yunyoung Bae ),( Yu-si Lee ),( Dong-hyun Kang ),( Soon Han Kim ) 한국미생물생명공학회 2022 Journal of microbiology and biotechnology Vol.32 No.10

In this study, we sought to investigate the various characteristics of Salmonella spp. isolated from raw chicken meats available in Korean markets. The data collected, such as food source of isolation, sampling information, serotype, virulence, and genetic profile including sequence type, were registered in the database for further comparative analysis of the strains isolated from the traceback investigation samples. To characterize serotype, virulence and gene sequences, we examined 113 domestically distributed chicken meat samples for contamination with Salmonella spp. Phylogenetic analysis was conducted on 24 strains (21.2%) of Salmonella isolated from 113 commercially available chicken meats and by-products, using pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). Serotyping of the isolated Salmonella spp. revealed S. Enteritidis in 11 strains (45.8%), S. Virchow in 6 strains (25%), S. Montevideo in 2 strains (8.3%), S. Bsilla in 2 strains (8.3%), S. Bareilly in 1 strain (4.2%), S. Dessau in 1 strain (4.2%), and S. Albany in 1 strain (4.2%). The genetic correlation indicated that 24 isolated strains were classified into 18 clusters with a genetic similarity of 64.4-100% between them. Eleven isolated S. Enteritidis strains were classified into 9 genotypes with a sequence identity of 74.4%, whereas the most distantly related S. Virchow was divided into five genotypes with 85.9% identity. Here, the MLST analysis indicated that the major Sequence Type (ST) of the Salmonella spp. isolated from domestic chicken sold in Chungcheong Province belongs to the ST 11 and 16, which differs from the genotype of Salmonella isolated from imported chicken. The differential sequence characteristics can be a genetic marker for identifying causative bacteria for epidemiological investigations of food poisoning.

소형 디젤엔진의 분사 특성 변화에 대한 연소 영향성 평가 연구

한광섭(Kwangseob Han),하태권(Taekwon Ha),김윤영(Yunyoung Kim),민병두(Byeongdu Min) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11

Comparative Analysis of Salmonella enterica subsp. enterica Serovar Thompson Isolates associated with Outbreaks using PFGE and wgMLST

Koh Youngho,Bae Yunyoung,Lee Min-Jung,Lee Yu-Si,Kang Dong-Hyun,Kim Soon Han 한국미생물·생명공학회 2022 Journal of microbiology and biotechnology Vol.32 No.12

The strains associated with foodborne Salmonella enterica Thompson outbreaks in Korea have not been identified. Therefore, we characterized S. Thompson strains isolated from chocolate cakes linked to foodborne outbreaks in Korea. A total of 56 strains were isolated from preserved cake products, products in the supply chain distribution, the manufacturer’s apparatus, and egg white liquid products used for cream preparation. Subsequently, serological typing, pathogenic genetargeted polymerase chain reaction (PCR), pulsed-field gel electrophoresis (PFGE), and wholegenome multi-locus sequence typing (wgMLST) were performed to characterize these isolates. The antigen formula of all isolates was 7:k:1,5, namely Salmonella enterica subsp. enterica Serovar Thompson. All 56 isolates harbored invA, his, hin, and stn, and were negative for sefA and spvC based on gene-targeted PCR analyses. Based on PFGE results, these isolates were classified into one group based on the same SP6X01.011 pattern with 100% similarity. We selected 19 strains based on the region and sample type, which were subjected to wgMLST. Although the examined strains showed 100% similarity, they were classified into seven clusters based on allelic differences. According to our findings, the cause of these outbreaks was chocolate cake manufactured with egg white liquid contaminated with the same Salmonella Thompson. Additionally, comparative analysis of wgMLST on domestic isolates of S. Thompson from the three outbreaks showed genetic similarities of over 99.6%. Based on the results, the PFGE and wgMLST combination can provide highly resolved phylogeny and reliable evidence during Salmonella outbreak investigations.