• 대한방사선기술학회지:방사선기술과학
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• 제44권4호
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• pp.375-380
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• 2021

This study aim was quantitative assessment of MTFs of spectrum of the square wave chart images and Coltman chart images for 0°, 1.7°, 2.2°, 2.9°, 4.1° by using chart method. In general device was AccuRay-650 (DK Medical System, Korea) used, indirect flat panel detector(FPD) Aero (Konica, Japan) used and MATLAB R2019a (MathWorks, USA) used. The result of comparison for each angle of MTF the edge image was highest quantitatively value for MTF finding of showed the best value of 0.1 based on the frequency of 3.5 mm^-1, value of 0.1 based on the square wave was frequency of 3.0 mm^-1 and value of 0.1 based on the Coltman transform was frequency of 2.4 mm^-1. In this study it was significant that the methodology of the international Electro-technical Commission was applied mutandis by using the Fujita method within 2~3°.

• International Journal of Computer Science & Network Security
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• 제23권6호
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• pp.169-175
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• 2023

Ethical hackers are using different tools and techniques to encounter malicious cyber-attacks generated by bad hackers. During the software development process, development teams typically bypass or ignore the security parameters of the software. Whereas, with the advent of online web-based software, security is an essential part of the software development process for implementing secure software. Security features cannot be added as additional at the end of the software deployment process, but they need to be paid attention throughout the SDLC. In that view, this paper presents a new, Ethical Hacking - Software Development Life Cycle (EH-SDLC) introducing ethical hacking processes and phases to be followed during the SDLC. Adopting these techniques in SDLC ensures that consumers find the end-product safe, secure and stable. Having a team of penetration testers as part of the SDLC process will help you avoid incurring unnecessary costs that come up after the data breach. This research work aims to discuss different operating systems and tools in order to facilitate the secure execution of the penetration tests during SDLC. Thus, it helps to improve the confidentiality, integrity, and availability of the software products.

• 한국항만경제학회지
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• 제28권2호
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• pp.195-211
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• 2012

세계화의 급속한 진전으로 인해 촉발된 물류활동의 글로벌화에 따라 새롭게 부각되고 있는 분야 중 하나인 해공복합운송은 해상운송의 경제성과 항공운송의 신속성을 통해 수송비용의 절감과 운송시간의 단축이란 목적을 달성하기 위하여 해상운송수단과 항공운송수단을 결합한 국제운송방식이다. 본 연구는 해공복합운송에서 포워더의 만족에 영향을 미치는 실제운송인의 서비스품질구성 요인을 규명하기 위하여 실제운송인을 이용해 본 경험이 있는 현직 포워더를 대상으로SERVPERF 모형을 이용하여 실증분석을 실시하였다. 통계적 검정결과 SERVPERF 모형에서 제시한 유형성, 신뢰성, 대응성, 확신성, 공감성 가운데 신뢰성, 대응성, 확신성, 유형성의 순서로 중요하다는 것이 검증되었으나 공감성은 통계적으로 유의하지 않게 나타났다. 이는 복합운송 산업의 특성에 따라 약속된 서비스를 신뢰할 수 있고, 정확하게 수행 가능한 능력으로 구성되는 요인인 신뢰성의 중요성이 나타난 결과라 할 수 있다. 그리고 기업이 고객에게 제공하고자 하는 개별적인 배려와 관심으로 구성되는 요인인 공감성의 경우 통계적으로 유의하지 않게 나타났는데, 이 또한 산업의 특성을 반영한 결과라고 할 수 있다.

• 문화기술의 융합
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• 제5권4호
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• pp.99-104
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• 2019

이 연구의 필요성은 노인요양시설 종사자의 근무환경의 질, 복지개선이 시설이용 어르신들의 양질의 서비스 제공을 위해 노인요양시설 종사자들을 대상으로 감정노동행동이 직무소진과 서비스품질에 미치는 영향과 감성리더십을 중심으로 효과를 규명하는데 있다. 연구결과를 요약하면 다음과 같다. 첫째, 감정노동행동 중 내면행동이 직무소진의 부의 영향을 미치는 것으로 나타났으며, 표면행동에는 정의 영향을 미치는 것으로 나타났다. 또한, 감정노동행동이 서비스품질에도 정의 영향을 미치는 것으로 나타났다. 둘째, 감성리더십은 감정노동행동 중 내면행동에서 정서적 고갈과 개인적 성취감저하에서만 조절효과를 보였으며, 표면행동에는 비인격화에서 조절효과가 나타났다. 셋째, 감성리더십은 감정노동행동 중 표면행동과 서비스 품질에서는 유형성, 신뢰성, 확신성 요인에서 감성리더십의 조절효과가 나타났다. 따라서 노인요양시설 종사자의 근무여건 개선과 노인요양시설 이용 노인들의 서비스 품질 향상을 위한 앞으로도 많은 연구들이 이루어져야 하겠다.

• 한국환경과학회지
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• 제22권8호
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• pp.1063-1072
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• 2013

To overcome the ecosystem-crisis of resource depletion and climate change, we should maintain and develop a 'Sustainability' of our society. 'After-market' is defined like this : any market where customers who buy one product or service are likely to buy a related follow-on product. This is related to a automotive, electric and electronic, and remanufacturing industry. 'After-market' will be helpful for reuse and recycling of resources aspects, cost and economic efficiency, low-carbon, climate protection, and new industries and job creation effects, To promote 'After-Market', we need to guarantee the quality of products. In this regard, we refer and introduce a new standard, for example, BS8887, PAS141 and ISO20245 etc. In order to promote 'After-Market', first of all, product quality assurance and safety must be demonstrated in the process of reuse. Second, many aspects of a device that protects the rights of consumers to be provided. And third, the related laws and standards should be reviewed. Finally, original manufacturer's awareness for environmental protection and resource conservation and government's institutional support are needed.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.719-728
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• 2007

Recently the assurance of railroad safety is very important issue in KOREA because there are lots of changes in the railroad industries. The Railway Safety Act was established in order to cope with these changes effectively and prevent the railroad transportation accidents. According to this law, Korea Transportation Safety Authority (KOTSA) has been entrusted with 'Integrated Railroad Safety Audit (IRSA)' and has implemented the safety audit to the railroad operation agencies such as Korea Railroad (KORAIL) and the railroad facility management organization such as the Korea Rail Network Authority (KR Network). The target of IRSA is to establish the effective rail safety management system and to raise the safety level of the railroad operation and facility agencies by checking synthetically their performance of safety duties with sincerity according to the Railway Safety Act. The purpose of this paper is to improve the efficiency of IRSA by the comparative research between IRSA and other similar safety audit system. To study the efficiency of IRSA, we investigated the rail safety audit systems of EU system specially France, England where the big changes have happened for the rail operation concepts and Japan where government entity control the railroad safety. The international standards of Occupational Health & Safety Assessment Series (OHSAS 18001), Quality Management System (ISO 9001) and Guidelines for Quality and/or Environmental Management Systems Auditing (ISO 19011) are investigated.

• 한국환경과학회지
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• 제4권5호
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• pp.61-61
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• 1995

Volatile organic compounds(VOCs) are of concern for their potential chronic toxicity, their suspected role in the formation of smog, and their suspected role in destruction of stratospheric ozone. Present study evaluated the exposures to selected VOCs in three microenvironments: 2 chlorinated and 5 aromatic VOCs in the indoor and outdoor air, and 5 aromatic VOCs in the breathing zone air of gas-service station attendants. With permissible Quality Assurance and Quality Control performances VOC concentrations were measured 1) to be higher in indoor air than in outdoor air, 2) to be higher in two Taegu residential areas than in a residential area of Hayang, and 3) to be higher in the nighttime than in the daytime. Among five aromatics, Benzene and Toluene were two most highly measured VOCs in breathing zone air of service station attendants. Based on the sum of VOC concentrations, the VOC exposure during refueling was estimated to be about 10% of indoor and outdoor exposures. For Benzene only, the exposure during refueling was estimated to cause about 52% of indoor and outdoor exposure. The time used to calculate the exposures was 2 minutes for refueling and 24 hours for indoor and outdoor exposures.

• 한국환경과학회지
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• 제4권5호
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• pp.447-459
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• 1995

Volatile organic compounds(VOCs) are of concern for their potential chronic toxicity, their suspected role in the formation of smog, and their suspected role in destruction of stratospheric ozone. Present study evaluated the exposures to selected VOCs in three microenvironments: 2 chlorinated and 5 aromatic VOCs in the indoor and outdoor air, and 5 aromatic VOCs in the breathing zone air of gas-service station attendants. With permissible Quality Assurance and Quality Control performances VOC concentrations were measured 1) to be higher in indoor air than in outdoor air, 2) to be higher in two Taegu residential areas than in a residential area of Hayang, and 3) to be higher in the nighttime than in the daytime. Among five aromatics, Benzene and Toluene were two most highly measured VOCs in breathing zone air of service station attendants. Based on the sum of VOC concentrations, the VOC exposure during refueling was estimated to be about 10% of indoor and outdoor exposures. For Benzene only, the exposure during refueling was estimated to cause about 52% of indoor and outdoor exposure. The time used to calculate the exposures was 2 minutes for refueling and 24 hours for indoor and outdoor exposures.

• 공학교육연구
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• 제17권3호
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• pp.59-68
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• 2014

Quality assurance in high level education is one of the most important problems in Korea, and around the world. Many studies have examined means of assuring the quality of education, mostly focusing on what type of graduate we should launch into the real world. However, it has been realized only in technical fields, such as Engineering, Medicine, etc. Here, we discuss the problems of Korean high level education in scientific fields, and present some answers from American innovation policies. The USA has changed the idea about how to innovate, and in recent years has developed the Professional Science Master's(PSM) degree, which is now awarded by over 100 American universities. PSM programs have produced graduates who can innovate in scientific fields, e.g., in biology, environmental science, and statistics. The degree is highly praised by the Council On Competitiveness, which consists of CEOs of major corporations, university presidents, and heads of labor organizations. The PSM seems to meet their expectations. Interestingly, many research universities have established PSM programs. We examined the reasons why many American universities have accepted the PSM despite their daily duties for research and doctoral education. Finally, we discuss the possibility that programs such as the PSM can succeed in Korean universities.

• 융합경영연구
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• 제11권6호
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• pp.35-41
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• 2023

Purpose: This study aims to determine the marketability of the heritage sites in Region III, Philippines. More specifically, it will obtain information on the: (a) profile of the heritage sites in Central Luzon; (b) dimensional issues of their marketability along social, environmental, and economic lines; (c) quality of services in terms of tangibility, responsiveness, empathy, assurance, and reliability; and (d) its business model canvas. Research design, data, and methodology: This will utilize a descriptive survey of the heritage sites in Central Luzon, namely: Aurora, Nueva Ecija, Bulacan, Pampanga, Tarlac, Zambales, and Bataan. There will be 60 respondents, including 5 facilitators, 24 residents, and 31 tourists. The results will be statistically measured through the measures of central tendencies, dispersion, and the test of significance. Result and conclusion: This study will comprehensively examine the local tourism sector, benefiting various stakeholders. It serves as a valuable resource for tourists by providing insights into destination marketing strategies and enhancing heritage tourism experiences. Administrators benefit from coping strategy evaluations, aiding in the formulation of effective strategies aligned with industry goals. Tourism businesses align with industry objectives and the study streamlines ordinances for site protection for local government units. Additionally, the community gains empowerment through insights into employable activities and potential businesses, influencing assessments of the justification for local preservation ordinances.