정부출연연구소 직원의 스마트폰 보안용 어플리케이션 이용의도에 미치는 영향요인 분석

장진혁 한국산업보안연구학회 2018 한국산업보안연구 Vol.8 No.2

최근 스마트폰을 활용한 업무환경이 빠르게 확산되어 새로운 형태의 사이버 공격이 급증하고 있으며, 이에 다양한 모바일 단말 관리(MDM)도 개발되고 있다. 정부출연연구소 중 국방과학연구소(ADD)는 군에서 사용하는 무기체계를 연구개 발하는 기관으로 기술의 유출을 막기위해 ADD Guardian이라는 MDM 소프트웨어 를 개발하였다. 이번 연구에서는 Davis의 기술수용모델을 변형하여 ADD의 보안정책의 유용성, 경영층의 관심 등 조직환경적인 변수와 기밀성, 무결성 등 시스템보안을 대표하 는 변수가 ADD Guardian을 설치해야 하는 직원들의 이용의도에 미치는 영향요인 을 분석하였다. 이 연구를 통해 정부출연연구소의 경영자들이 직원들에게 보안어플리케이션 설치하도록 유도하기 위해서는 어떠한 요소에 관심을 가져야 하는지 실증적인 결과를 도출하였다. Recently, the work environment using smart phones has spread rapidly, and new types of cyber attacks have been rapidly increasing. Accordingly, various mobile device management (MDM) are being developed. The Agency for Defense Development (ADD), a Government-Supported Research Institute, develops MDM software called ADD Guardian to prevent leakage of technology. The purpose of this study is to investigate the factors influencing users' intention to use ADD Guardian. In other words, we examined how the external environment factors such as the usefulness of ADD security policy and management 's interest, and the technical characteristics such as confidentiality and integrity affect the intention of using ADD Guardian through perceived reliability and usefulness. This study has yielded empirical results on what factors should be taken into account in order to force executives of government-funded research institutes to install security applications for their employees.

고농도의 이산화질소($NO_2$)흡입으로 유발된 급성 폐손상 1례

장진혁,김도연,김영,장윤수,김형중,안철민,김성규,김태훈,Chang Jin Hyuck,Kim Do Youn,Kim Young,Chang Yoon Soo,Kim Hyung Jung,Ahn Chul Min,Kim Sung Kyu,Kim Tae Hoon 대한임상독성학회 2005 대한임상독성학회지 Vol.3 No.1

Nitrogen dioxide ($NO_2$), which produced during the process of silage, metal etching, explosives, rocket fuels, welding, and by-product of burning of fossil fuels, is one of major components of air pollutant. Accidental exposure of high level of $NO_2$ produces cough, dyspnea, pulmonary edema which may be delayed $4\~12$ hours and, in $2\~6$weeks, bronchiolitis obliterans. We experienced a case of acute pulmonary injuny induced by industrial exposure to high level of $NO_2$ during repair of $NO_2$ pipeline in a refinery. A 55-year-old man experienced nausea and severe dyspnea in 6 hours after $NO_2$ inhalation. Initial blood gas examination revealed severe hypoxemia accompanying increased alveolar-arterial O2 difference. Radiological examination showed diffuse ground glass opacities in both lung fields. Clinical symptoms and laboratory findings, including radiological study and pulmonary function test were improved with conservative treatment using inhaled oxygen and bronchodilator. and there was no evidence of bronchial fibrosis and bronchiolitis obliterance in chest high resolution computed tomography performed 6 weeks after exposure. Here, we report a case of $NO_2$ induced acute pulmonary injuny with a brief review of the relevant literature.

승용차의 후미 형상 변화에 따른 횡풍민감성에 대한 연구

장진혁,김대훈,고주헌 한국항공우주학회 1997 한국항공우주학회 학술발표회 논문집 Vol.- No.-

한국지역에서 GPS와 Beidou의 위성 가시성 및 고앙각 위성 분석

장진혁,김홍표,안종선,허문범,성상경,이영재 한국항행학회 2018 韓國航行學會論文誌 Vol.22 No.6

Globally, global navigation satellite system (GNSS) is being developed and operated in advanced countries. China's Beidou is developing rapidly, starting with global positioning system (GPS), which is the most representative system. In this paper, we analyze the visibility of Beidou satellite in Korea at present time to utilize rapidly changing Beidou. In this analysis, it is compared with GPS which is stable service. The results of the visibility analysis are based on the results of the mask angle (the low elevation satellite exclusion angle) and the result of the skyplot (a visual representation of the position of the satellite at the user location). Visibility analysis shows that the high elevation angle of Beidou satellite is higher than that of GPS satellite in Korea. In addition, GPS and Beidou's availability and positioning accuracy analysis are performed to confirm the effect of increasing elevation angle satellites. According to the results, Beidou is more effective than GPS in using high elevation satellites in Korea. 세계적으로 GNSS (global navigation satellite system)는 선진국에서 개발 및 운용 중에 있다. 가장 대표적인 시스템인 GPS (global positioning system)을 시작으로 현재 중국의 Beidou가 빠르게 발전하고 있다. 본 논문에서는 빠르게 변화하는 Beidou의 활용을 위해 현재 시점의 한국지역에서 Beidou 위성의 가시성 분석을 수행한다. 이렇게 수행되는 분석에서 안정적으로 서비스 되고 있는 GPS와 비교하며 진행하도록 한다. 가시성 분석은 mask angle (저앙각 위성 배제 각도)에 따른 결과, skyplot (사용자 위치에서 위성의 위치를 가시적으로 표현하기 위한 그림)을 통한 결과를 수행하였다. 가시성 분석을 통해 한국지역에서 GPS위성에 비해 Beidou 위성의 고앙각 배치가 많아지는 것을 확인 할 수 있다. 또한 고앙각 배치가 많아지는 것의 효과를 확인하기 위해 GPS와 Beidou의 가용성 및 위치정확도 분석을 수행한다. 수행 결과에 따라 한국지역에서 고앙각 위성을 활용 할 시 GPS보다 Beidou가 더 효과적일 것으로 확인된다.

자동 기타 튜닝을 위한 장력 제어기 설계 연구

장진혁,이수언,최진일,이상권,이원구 제어로봇시스템학회 2020 제어로봇시스템학회 국내학술대회 논문집 Vol.2020 No.7

공업용수 공급량 산정의 적정성에 대한 평가

장진혁,장형준,이호진 한국방재안전학회 2022 한국방재안전학회 논문집 Vol.15 No.2

The adequacy of industrial water supply is one of the core elements of the construction of industrial complexes. This study examined the supply of industrial water through various ways, according to the planning and creation of industrial complexes and the operating utilization rate of tenant companies oksan industrial complex. As for calculating the supply of industrial water and establishing water supply plan, the basic data analysis and the land use plan are utilised. The adequacy of calculating the basic unit by industry, which is the basis for calculating industrial water, was evaluated. In addition, analyzed industrial water usage data and the raw unit of each industry was compared with the actual data from the Oksan Industrial Complex, which selected as the research target area among the industrial complexes in Cheongju-si administrative districts, where actual data can be secured. The result of the study shows that the peak load rate of industrial water was found to have the peak load of more than twice as the result of analyzing the actual usage, and the basic unit of industrial water industry showed a significant difference from the actual usage. In particular, the decreasing rate of the basic units was significant comparing the increasing rate of basic units. In addition, the raw unit of the industry that uses more water decreased significantly, and the raw unit of the industry that uses less water increased slightly.

금융데이터의 성능 비교를 통한 연합학습 기법의 효용성 분석

장진혁,안윤수,최대선,Jang, Jinhyeok,An, Yoonsoo,Choi, Daeseon 한국정보보호학회 2022 정보보호학회논문지 Vol.32 No.2

Current AI technology is improving the quality of life by using machine learning based on data. When using machine learning, transmitting distributed data and collecting it in one place goes through a de-identification process because there is a risk of privacy infringement. De-identification data causes information damage and omission, which degrades the performance of the machine learning process and complicates the preprocessing process. Accordingly, Google announced joint learning in 2016, a method of de-identifying data and learning without the process of collecting data into one server. This paper analyzed the effectiveness by comparing the difference between the learning performance of data that went through the de-identification process of K anonymity and differential privacy reproduction data using actual financial data. As a result of the experiment, the accuracy of original data learning was 79% for k=2, 76% for k=5, 52% for k=7, 50% for 𝜖=1, and 82% for 𝜖=0.1, and 86% for Federated learning.

조직 내 정치적 행동 지각과 이직의도 간의 관계: 스트레스, 조직몰입의 매개효과와 정직성의 조절효과

장진혁,유태용 한국산업및조직심리학회 2013 한국심리학회지 산업 및 조직 Vol.26 No.3

본 연구의 목적은 첫째, 조직 내 정치적 행동 지각과 스트레스가 이직의도에 미치는 영향을 살펴보고, 둘째, 스트레스와 조직몰입이 조직 내 정치적 행동 지각과 이직의도 간의 관계를 매개하는지 살펴보고, 셋째, 조직 내 정치적 행동 지각이 스트레스에 미치는 영향에 있어서 정직성의 조절효과를 검증하는 데 있었다. 이를 위하여 국내 기업에서 근무하는 종업원들에게 설문조사를 실시하여 총 203명의 응답 자료를 분석에 사용하였다. 자료를 분석한 결과, 조직 내 정치적 행동 지각과 스트레스는 이직의도와 정적으로, 관련이 있었다. 스트레스와 조직몰입은 조직 내 정치적 행동 지각과 이직의도 간의 관계에서 순차적인 매개역할을 하였다. 또한 정직성이 낮을 때 보다 높을 때 조직 내 정치적 행동 지각과 스트레스 간의 정적 관계가 더 강하게 나타났기 때문에 정직성이 조직 내 정치적 행동 지각과 스트레스 간의 관계를 조절한다는 것이 밝혀졌다. 이러한 연구 결과를 토대로 본 연구의 시사점, 제한점 및 추후 연구과제에 대해 논의하였다.

한글판 Birchwood Insight Scale의 표준화 연구

장진혁,이남영,김용식,박상원 대한신경정신의학회 2019 신경정신의학 Vol.58 No.1

Objectives In the treatment of schizophrenia, treatment compliance is an important prognostic factor. As insight has a significant impact on treatment compliance, an appropriate assessment of insight is essential in the treatment of schizophrenia. This study examined the reliability and validity of the Korean version of Birchwood Insight Scale (BIS). Methods Fifty seven adult patients diagnosed with schizophrenia according to DSM-5 were recruited from a university hospital. They were evaluated using the Positive and Negative Syndrome Scale (PANSS), The Scale to Assessment Unawareness of Mental Disorder (SUMD) and BIS. Explorative factor analysis was performed to examine the construct validity of the Korean version of BIS. Concurrent validity was evaluated by a comparison with the PANSS G12 item and SUMD. The test-retest correlation was evaluated to examine the test-retest reliability. Multiple regression analysis was performed to examine the variables affecting insight. Results: Explorative factor analysis showed that the Korean version of BIS was composed of 2 factors, which are ‘Awareness of symptoms’ and ‘Awareness of illness and need for treatment.’ The Korean version of BIS was reliable in terms of the internal consistency. Concurrent validity with the PANSS G 12 item and SUMD was statistically significant. The test-retest reliability was also statistically significant. Multiple regression analysis showed that the PANSS negative factor affects the BIS score, indicating that negative symptoms of schizophrenia may impair insight of the illness. Conclusions This study suggests that the Korean version of BIS is a valid and reliable tool for assessing the insight of patients with schizophrenia.

Spontaneous self-degradation of Light-emitting Electrochemical Cells(LECs) made with MEP-PPV/PEO/KCF₃SO₃

장진혁,김래호,김유진,김경훈,정용진,박찬언 한국고분자학회 2015 한국고분자학회 학술대회 연구논문 초록집 Vol.2015 No.10