효율적인 HWP 악성코드 탐지를 위한 데이터 유용성 검증 및 확보 기반 준지도학습 기법

손진혁,고기혁,조호묵,김영국 한국정보보호학회 2024 정보보호학회논문지 Vol.34 No.1

With the advancement of information and communication technology (ICT), the use of electronic document types such as PDF, MS Office, and HWP files has increased. Such trend has led the cyber attackers increasingly try to spread malicious documents through e-mails and messengers. To counter such attacks, AI-based methodologies have been actively employed in order to detect malicious document files. The main challenge in detecting malicious HWP(Hangul Word Processor) files is the lack of quality dataset due to its usage is limited in Korea, compared to PDF and MS-Office files that are highly being utilized worldwide. To address this limitation, data augmentation have been proposed to diversify training data by transforming existing dataset, but as the usefulness of the augmented data is not evaluated, augmented data could end up harming model’s performance. In this paper, we propose an effective semi-supervised learning technique in detecting malicious HWP document files, which improves overall AI model performance via quantifying the utility of augmented data and filtering out useless training data.

폴리우레아를 활용한 해상풍력 지지구조물 안티파울링 필름 개발

손진혁,강명보,정경국,한우범 한국풍력에너지학회 2024 풍력에너지저널 Vol.15 No.1

Bio-fouling has positive aspects that are used as a fish resource, but there are also negative aspects such as corrosion of the surface of the support structure, aesthetics and work safety problems. A specimen was produced using a polyurea material with excellent anti-fouling and methodology, and contact angle, high water pressure, adhesion, and real sea area tests were performed. As a result of measuring the contact angle of the specimen with a 10 cm x 10 cm area of polyurea, There was found to be an average of 124.4 ° at nine points. No surface damage was found even above 5 Mpa when high water pressure was sprayed, and adhesive strength of 300LSE adhesives was confirmed between 22.84 and 23.04 Mpa with an adhesion test. During the 6-month real sea area test, it was confirmed that about 17.24 % of the polyurea film was less generated than the comparison group.

MIS내에서 마케팅정보시스템의 효율적 실행방안

손진혁 동국대학교 경영관리연구소 1994 經營經濟論叢 Vol.18 No.-

Under the recent change in corporate environment, marketing managers must cope with these changes creatively and systematical in order to have an advantage over competitions in markets. It is necessary that marketing managers should use marketing information system to cope with these changes. Clearly, marketing information system will provide useful information and the information will improve manager's decision making. This thesis defined marketing information system and discussed the role, benefit of marketing information system by the related literature. The purpose of this thesis is finding out the most efficient way of utilizing marketing information system and activities of it. Marketing information systems support the marketing function. They may be categorized as operational, tactical, and strategic in nature. Operational marketing information systems include systems that support the sale of the organization's goods and services. Tactical Marketing information systems support marketing managers in the management and control of the salesforce, sales campaign, advertising and promotion campaigns, pricing, and the distribution and delivery of goods and services. Strategic marketing information systems help top management plan and development new products and forecast sales. Two major information systems that support both tactical and strategic decision making are marketing systems and competitive tracking information systems. To improve Marketing information systems can be listed as follows ; ①The support from top management for better utilizing marketing information system is the most important factor for the improvement of marketing information system. ②The improvement and diversification of software is necessary together with securing well-educated and trained experts in software. ③Data base management system should be more developed and improved.

企業이미지와 購買選擇과의 關聯性에 대한 實證的 硏究 : 小型乘用車 所有者를 中心으로

孫振赫 동국대학교 경영관리연구소 1993 經營經濟論叢 Vol.17 No.-

Image is extremely important toward the success of a business in today's market ; market situation from seller's market to buyer's market. Consumer behavior depends on not only product knowledge and information but also corporate image. Therefore, organizations have a vital interest in learning about their images in the marketplace and making sure that these images facilitate rather than impede the delivery of satisfactions. The purpose of this study is to examine the relationship between corporate image and purchaser's choice. For the purpose of this study, the methodology has three steps : 1. determination of factors related with corporate image 2. measurement of corporate image 3. analysis of relationship between corporate image and purchaser's choice 221 persons in first survey and 240 persons in second survey who live in Seoul City were chosen by judgement as sample persons for this exploratory study. Individual interview with questionnaire was used to collect data. The Statistical Package for the Social Science(SPSS PC ) was used to analyze the data. The result of this study can be summerized as follows : 1. The attributes constructing corporate image were compressed into 6 factors as follows ; social contribution, quality of product, consumber's benefit, promotion strategy, condition of purchase, saleman's ability. 2. Correlation between overall image and 6 image factors and multiple regression equation were statistically significant. As a result, the 6 image factors appear to be suitable measure of overall image. 3. Results of ANOVA and Discriminant analysis provided consistent support for the image effect on the choice of compact car. By virture of this study results, marketers can build strategies to create efficiencies in maintaining and controlling the corporate image.

지방교육 재정과 특수교육 재정의 현황

손진혁 檀國大學校 특수교육과 1995 特殊敎育硏究 Vol.12 No.-

경영정보시스템 구축에 따른 End-User의 업무 만족도에 대한 연구

손진혁 동국대학교 경영관리연구소 1995 經營經濟論叢 Vol.19 No.-

The purpose of this thesis is to study End User's satisfaction in Management Information Systems. This thesis has two basic objective : 1) to examine the relationships between End User's satisfaction and organizational supports, End User's satisfaction and task structure, End User's satisfaction and user attitude. 2) to investigate that user variables(organizational supports, task structure and user attitude) may affect different impact on User satisfaction. For this purpose, I have reviewed the results of past studies on the performance factors of MIS, and introduced an new studying model. On the basis of this new studying model, Hypotheses are as follows : H1 : Organizational support is positively related to the user satisfaction. H2 : Task structure is positively related to the user satisfaction. H3 : User attitude is positively related to the user satisfaction. H2 : User variables may affect different impact on user satisfaction. Among four hypotheses, three hypotheses(H1, H3 and H4) are suppoted and H2 is rejected.

차세대 플로우 기반 스위칭 환경에서의 End - to - End QoS 제공을 위한 상호 운용 방안 연구

손진혁,양진홍,박나정,임상준,김철수 한국통신학회 2004 한국통신학회 학술대회 및 강연회 Vol.2004 No.12

자연어 처리를 통한 UPnP 홈네트워크 구축

손진혁,김철수,김태완 仁濟大學校 2006 仁濟論叢 Vol.21 No.1

가정의 전자 기기들이 보다 복잡해지고, 지능화됨에 따라 이를 이용하는 사용자의 어려움은 더욱 증대되고 있다. 또한 현재의 네트워크 망이 보다 진보됨에 따라 각 가정의 전자 기기들은 모두 네트워크로 연결이 되어, 사용자가 언제 어디서든 가전기기를 제어할 수 있을 뿐만 아니라, 가스 밸브와 전구까지도 제어가 가능해진다. 이러한 홈네트워크 환경에서 다양한 전자 기기들을 제어하기위해서는 그에 상응하는 다양한 매뉴얼들의 숙지가 필요하며, 이는 사용자로 하여금 복잡성을 야기 시킨다. 이를 해결하기위해 본 논문의 III에서는 사용자가 사전에 매뉴얼의 숙지 없이 전자 기기와 음성인식을 통하여 홈네트워크 장비들을 제어하기위하여 음성처리를 통하여 얻은 텍스트 파일을 XML로 변환하여 이를 UPnP에서 인식할 수 있는 XML로 다시 변환하여 이용하고자 한다.

대학생 대인관계 체면민감성 척도 개발 및 타당화

손진혁,양난미 한국상담학회 2020 상담학연구 Vol.21 No.2

The purpose of this study was to develop and validate interpersonal relationship chemyon sensitivity scale for college students. After reviewing of precedent studies, interpersonal relationship chemyon sensitivity scale of 63 preliminary items was produced. A survey of 263 college students was conducted, final 20 items and five sub-factors were derived from the collected data through the exploratory factor analysis. The 20 items were finally confirmed such as; five items on shame sensitive, five on evaluation anxiety, four on ability exposure, three on emotion exposure and three on self-defense. Next, confirmatory factor analysis and validation test were conducted on the data collected from 343 college students. The results of a confirmatory factor analysis showed that the items were appropriate for the model. Also, the convergent and discriminant validity, the concurrent validity and the incremental validity were confirmed. In addition, the test-retest reliability was verified in the four-week test. Finally, the implications and suggestions were discussed. 본 연구는 국내 대학생을 대상으로 대인관계 체면민감성 척도를 개발하고 타당화하는 것을 목적으로 하였다. 선행연구를 분석하여 체면민감성의 구성개념을 구성하였고, 이를 바탕으로 63개의 예비문항을 제작하였다. 대학생 263명을 대상으로 탐색적 요인분석을 한 결과, 최종 5개 하위요인, 20문항을 추출하였다. 최종 20문항은 자괴 민감 5문항, 평가불안 5문항, 능력 노출 4문항, 감정 노출 3문항, 자기방어 3문항으로 확정하였다. 다음으로 국내 4년제 대학생 343명을 대상으로 확인적 요인분석과 타당화 검증을 진행하였다. 확인적 요인분석 결과, 문항이 모형에 적합함을 확인할 수 있었고, 수렴 및 변별타당도, 공존 타당도, 증분 타당도가 있음을 확인할 수 있었다. 또한, 4주 간격을 두고 재검사한 결과 검사-재검사 신뢰도를 확인할 수 있었다. 마지막으로 척도 개발과정에서 나타난 시사점과 제안점을 논의에 제시하였다.

Improved Cholesky Decomposition using Channel Element Relocation for MIMO Systems

손진혁,박상규,현광민 한국지식정보기술학회 2015 한국지식정보기술학회 논문지 Vol.10 No.1

This paper newly proposed a channel element relocation which can reduces multiplication complexity of ML by applying cholesky decomposition. In wireless communication, maximum likelihood(ML) detection scheme that shows the best bit error rate(BER) performance is usually used; however, a huge amount of multiplication complexity has been pointed out as a default. To lower multiplication complexity of ML detection scheme, various methods have been proposed. Among of them, QRM-MLD algorithm which uses QR decomposition was proposed. The QRM-MLD algorithm maintains the optimal BER performance of ML and reduces the huge amount of multiplication complexity of ML detection. But, QR decomposition shows a huge increase according to augmentation of a number of antennas because of amount of complexity of decomposition process of QR decomposition. For this reason, cholesky decomposition which has low complexity on decomposition process was proposed. Cholesky decomposition does not have high complexity on decomposition process but show reduced complexity than QR decomposition when a number of antennas increase. However, despite reduced complexity, there is a need of additional decrease of ML complexity. To satisfy the need, this paper proposes channel element relocation which applies to Cholesky decomposition and shows additional complexity reduction. Comparision with proposed method and QRM-MLD and conventional Cholesky decomposition shows that proposed method has low complexity.