• 대한기계학회논문집A
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• 제26권8호
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• pp.1577-1584
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• 2002

This paper develops a finite element model for studying the occupant behavior and injury cofficients of a large-sized cab-over type truck. Since it does not have a room to absorb collision energy and deformation in front of the passenger compartment the deformation is directly transmitted to the passenger compartment. Moreover, since its steering column is attached on the frame, severe deformation of the frame directly affects on the steering wheel's movement. Therefore, if the occupant behavior and injury coefficients analysis is performed using a finite element model developed based on a sled test, it is very difficult to expect acquiring satisfactory results. Thus, the finite element model developing in this paper is based on the frontal crash test in order to overcome the inherent problems of the sled test based model commonly used in the passenger car. The occupant behavior and injury coefficients analysis is performed using PAM-CRASH installed in super-computer SP2. In order to validate the reliability of the developed finite element model, a frontal crash test is carried out according to a test method used fur developing truck occupant's secondary safety system in european community and japan. That is, test vehicle's collision direction is vertical to the rigid barrier and collision velocity is 45kph. Thus, measured vehicle pulses at the lower parts of the left and right B-pilla., dummy chest and head deceleration profiles, HIC(head injury criterial) and CA(chest acceleration) values, and dummy behavior from the frontal crash test are compared to the analysis results to validate reliability of the developed model.

• 가정과삶의질연구
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• 제28권4호
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• pp.1-13
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• 2010

The purpose of this study is to conduct base line research, which is based on requestion of international married immigrant women, for developing social adaptation and family enrichment program for those population who reside in Korea. The survey questionnaire was distributed to 142 international married immigrant women who reside in Seoul to research program participate satisfaction and requestion. Analyze the study results, frequency, percentage, t-test, ANOVA and Duncan-post test were utilized. As a result, overall satisfaction toward program that offered by organization was highly ranked. Visiting service showed high score of satisfaction but mentor service that strongly possess sacrifice showed lower score of satisfaction. Vocational and job-related skill improvement education presented less satisfied degree of satisfaction but cooking class, computer class, training education for native-speaking instructor present high level of satisfaction. Second, the requisition of target population, who did not participate program, presented lower than the satisfaction, still present high demand of variety area of program. Among them, assist child nurturing and vocational and job- related skill improvement education showed high demand. It enable to predict that they are eager to get support toward parent role and self-realization. Third, when the difference were analyzed to compare the subjective judgement toward life adaptation in Korea and the satisfaction for program user and the requisition of non-user, the meaningful differences were founded; especially, individuals who possess confident degree of computer skills and Korean(reading, speaking, and listening) showed higher degree of satisfaction to vocation and job-skill related improvement education. This study has a practical implication, which is based on the study results, on developing a program to support international married immigrant women and multicultural families to satisfactory settlement in Korea life and to maintain healthy families.

• 한국과학교육학회지
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• 제19권1호
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• pp.159-172
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• 1999

본 연구는 '97년에 수행된 "공통과학 국가공통 절대평가 기준 개발 연구"의 후속 연구로서 국가 교육 과정에 근거한 고등학교 공통과학의 평가 기준 및 도구를 개발하였다. 기준 개발의 각 과정에서 과학교육 전공 교수, 고등학교 교사 교육부 관계관들과 협의회, 워크샵, 집중작업 등을 통해 의견을 수렴하고, 합의된 안을 도출하였으며, 구체적인 과정은 다음과 같다. -성취기준 검토 및 수정: 선행 연구에서 개발된 성취기준을 현장 교사 대학 교수, 교육부 관계관 등의 검토 의견을 반영하여 수정하였다. -평가기준 개발: 공통과학의 37개 중영역에 대하여 학생들의 성취 정도를 상/중/하로 판단할 수 있는 준거를 개발하였다. 평가도구 개발, 각 중단원의 성취 정도를 평가할 수 있는 도구를 중단원별로 2조 이상 개발하였다. 선택형이나 단답형 평가도구 보다는 타당도를 중시한 수행평가(서술형, 관찰, 보고서, 포트폴리오 평가 등) 위주로 개발하였다.

• 한국자동차공학회논문집
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• 제10권4호
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• pp.1-6
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• 2002

Engine lubrication system is generally affected by vehicle driving conditions, which are composed of acceleration, braking deceleration and accelerating during cornering. The major reason is due to the oil pan system in which oil is directly influenced by inertia farce caused by vehicle driving conditions. Therefore, to confirm safety of engine lubrication system inertia farce effects are also considered in the developing state. For the purpose, we have carried the engine tilting tests using ourselves made test rig. Verifying the test results we also measured the inertia effects on the engine lubrication system using the circular tuning and slalom test with vehicle. Through the comparison study between two kinds of results we obtained that the engine tilting test rig was very useful to confirm the safety evaluation of engine lubrication system.

• International Journal of Computer Science & Network Security
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• 제22권2호
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• pp.214-222
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• 2022

Convolutional Neural networks (CNNs) are a category of deep learning networks that have proven very effective in computer vision tasks such as image classification. Notwithstanding, not much has been seen in its use for remote sensing image classification in developing countries. This is majorly due to the scarcity of training data. Recently, transfer learning technique has successfully been used to develop state-of-the art models for remote sensing (RS) image classification tasks using training and testing data from well-known RS data repositories. However, the ability of such model to classify RS test data from a different dataset has not been sufficiently investigated. In this paper, we propose a deep CNN model that can classify RS test data from a dataset different from the training dataset. To achieve our objective, we first, re-trained a ResNet-50 model using EuroSAT, a large-scale RS dataset to develop a base model then we integrated Augmentation and Ensemble learning to improve its generalization ability. We further experimented on the ability of this model to classify a novel dataset (Nig_Images). The final classification results shows that our model achieves a 96% and 80% accuracy on EuroSAT and Nig_Images test data respectively. Adequate knowledge and usage of this framework is expected to encourage research and the usage of deep CNNs for land cover mapping in cases of lack of training data as obtainable in developing countries.

• 대한기계학회논문집A
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• 제22권3호
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• pp.554-561
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• 1998

Vehicle body structures are formed by thousands of spot welds and fatigue failure of vehicle structures occur near the spot welds after driving a long way at a durability test road. It is necessary to know accurately the reason of the fatigue failure of the spot weld in the developing stage in order to reinforce it. Many investigations have been done regarding the strength of spot welded joints, contributing to understand its fatigue strength. In developing process, a fatigue failed spot welded area can be repaired by $CO_2$ welding or another method to continue the test. To know the effect of reinforcing these welds, several methods of welding were analyzed and compared to spot welding. With the results of this test, the appropriate repair method can be used instead of spot welding during the development of new car and best design guide can be given for the strength. In this study, fatigue and static tensile tests are made and microstructure is investigated for the purpose of estimating the strength of welded joints by using spot welded and $CO_2$ plug welded specimens. The tested specimens are of two types : Tensile-shear type(TS) and L-tension type(LT).

• Asian Pacific Journal of Cancer Prevention
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• 제15권16호
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• pp.6525-6529
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• 2014

Background: The aim of this study was to determine the health beliefs and knowledge about breast self examination (BSE) and the actual BSE habits of female university nursing students. Materials and Methods: The study sample recruited 189 nursing students who agreed to participate in the study. Descriptive statistics, the Mann-Whitney U test, one way ANOVA test, t test and Pearson correlation analysis were used to analyse the data. Results: 83.1% of nursing students had knowledge about breast cancer (BC) and BSE in the study. BSE was practiced by 70.4% of nursing students; 21.8% of them performed BSE regularly. A fear of developing BC was an incentive for 85% of nursing students to practice BSE. The confidence subscale scores in the third and fourth years of students' university education were higher, and the barrier subscale score in these same years was lower than their first years of study. Perception of benefit of nursing students experiencing breast-related discomfort exerted a positive effect. Nursing students with lower perception of barriesr performed BSE regularly. In conclusion, nursing students' years of university study, breast cancer knowledge, history of breast cancer in family, and BSE practice status were factors affecting their health beliefs. Conclusions: These study results indicate the importance of developing education and training programs which educate not only nursing students but all women about breast cancer, its symptoms, the importance of early diagnosis and of regular BSE.

• Tuberculosis and Respiratory Diseases
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• 제76권6호
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• pp.261-268
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• 2014

Patients with immune-mediated inflammatory diseases (IMIDs) are increasingly being treated with anti-tumor necrosis factor (TNF) agents and are at increased risk of developing tuberculosis (TB). Therefore, diagnosis and treatment of latent TB infection (LTBI) is recommended in these patients due to the initiation of anti-TNF therapy. Traditionally, LTBI has been diagnosed on the basis of clinical factors and a tuberculin skin test. Recently, interferon-gamma releasing assays (IGRAs) that can detect TB infection have become available. Considering the high-risk of developing TB in patients on anti-TNF therapy, the use of both a tuberculin skin test and an IGRA should be considered to detect and treat LTBI in patients with IMIDs. The traditional LTBI treatment regimen consisted of isoniazid monotherapy for 9 months. However, shorter regimens such as 4 months of rifampicin or 3 months of isoniazid/rifampicin are increasingly being used to improve treatment completion rates. In this review, the screening methods for diagnosing latent and active TB before anti-TNF therapy in patients with IMIDs will be briefly described, as well as the current LTBI treatment regimens, the recommendations for managing TB that develops during anti-TNF therapy, the necessity of regular monitoring to detect new TB infection, and the re-initiation of anti-TNF therapy in patients who develop TB.

• 마이크로전자및패키징학회지
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• 제8권3호
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• pp.69-75
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• 2001

후막광식각 기술은 스크린 인쇄 등의 일반적 후막공정에 노광 및 현상등의 리소그라피 공정 을 접목시킨 새로운 기술이다. 그린시트를 적층한 후 감광성 Ag 페이스트를 도포하고, 패턴을 노광, 현상, 동시소성하여 스크린 인쇄법으로는 어려운 25 $\mu\textrm{m}$ 선폭과 25 $\mu\textrm{m}$ 선간공백을 구현하였다. 알루미나 기판을 사용하였을 경우에도 유사한 방법으로 20 $\mu\textrm{m}$에 가까운 선폭이 구현 가능하였으며, 노광량과 현상시간이 미세라인 형성에 있어서 가장 중요한 공정변수임을 확인하였다. 또한, 광식각 기술을 이용하여 정밀도가 높고 고주파 대역에서 전송특성이 우수한 microstrip 전송선로와 series gap 공진기를 제작하여, 이로부터 기판의 유전률 및 유전손실을 계산하였다.

• 안보군사학연구
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• 통권1호
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• pp.391-421
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• 2003

While the social activities using Internet become generalized, the side effect of the information security violation is increasing steadily and threaten the countries which is not ready to prevent from offensive penetration such as the Information-fighter or Cyber-military. In this paper, we define the concept and characteristics of the modern Information-Warfare and analyze various kinds of threatened elements and also examine the recent trend in other countries. And introducing Computer Forensics raised recently for the confrontation against the security violation in the future, we will show the developing strategies and the necessity in order to response cyber attacks. These developing strategies can be used to ensure and re-trace the technical evidence for the security violation and to achieve the disaster relief effectively. So we hope that can apply them to the actual preparation through developing cyber trial test of the defense and attack for the Information-Warfare.