• 대한치과기공학회지
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• 제33권2호
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• pp.159-170
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• 2011

Purpose: This study were to analyze satisfaction with job ability development training among Dental Technicians', examine the degree of their actual satisfaction with training courses and their status, and provide some basic data to help improve the quality level, satisfaction, and effective operation of job ability development training in the future. Methods: This study carried out self-administered questionnaire survey from January 15, 2011 to March 10 by having research subjects as 180 dental technicians who participated in the course of employees' Job Ability Development Training by 'Gil Occupational Training Institute,' which is being conducted as part of dental technicians' job ability development in Seoul region. Among these things, 160(88.8%) copies were collected. Except 19 copies with incomplete response, 141(78.3%) copies were used as the materials of final analysis. Results: First of all, as a result of grasping the whole satisfaction with training according to general characteristics, the significant difference was indicated in the whole satisfaction with training depending on gender & age, and voluntary participatory intention. Second, the satisfaction with contents of Job Ability Development Training was in order of helpful level in ability development with 4.10(${\pm}.70$), co-worker's recommendation and a plan for reparticipation with 4.08(${\pm}.77$), consistence with the content goal with 4.07(${\pm}.71$), and reflection of demand with 4.01(${\pm}.70$). Third, examining satisfaction with instructors of Job Ability Development Training, it is being indicated with a little higher score compared to the satisfaction with other items. Fourth, satisfaction with service of supporting learners in job ability development training was shown to be slightly low in all the items. Especially, the convenience of administrative procedure was indicated to be the lowest with 3.52(${\pm}.92$) Fifth, satisfaction with the facility of job ability development training was showing very low satisfaction compared to other satisfaction items. Conclusion: A continuous effort will be needed in order to be possibly strengthened dental laboratory technicians' professionalism and reinforced qualitative level in major ability through offering more educational opportunities and education in good quality.

• 한국정밀공학회지
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• 제33권12호
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• pp.1031-1037
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• 2016

This study was to verify the effect of complex training programs on the postural balance and trunk muscle strength of the elderly. We recruited 40 elderly participants aged 60 to 75 years. Subjects were evaluated before, and 12 weeks after. The participants underwent complex training programs, including free exercise, elastic band and unstable plate. Exercise were performed as follows: 10 repeats in 50 minutes (0 to 4 weeks), 13 repeats in 50 minutes (5 to 8 weeks), and 15 repeats in 50 minutes (9 to 12 weeks). The training group underwent complex training, including warm up, thrice a week for twelve weeks. The control group did not perform any complex training. Results indicate that the postural balance and trunk muscle strength in the training group significantly increased. Data generated from this study could be applied to develop a complex training program to efficiently build whole body muscle strength.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권12호
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• pp.3889-3903
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• 2022

To address the problem of low detection accuracy due to training noise caused by mislabeling when Tri-training for network intrusion detection (NID), we propose a Tri-training algorithm based on cross entropy and K-nearest neighbors (TCK) for network intrusion detection. The proposed algorithm uses cross-entropy to replace the classification error rate to better identify the difference between the practical and predicted distributions of the model and reduce the prediction bias of mislabeled data to unlabeled data; K-nearest neighbors are used to remove the mislabeled data and reduce the number of mislabeled data. In order to verify the effectiveness of the algorithm proposed in this paper, experiments were conducted on 12 UCI datasets and NSL-KDD network intrusion datasets, and four indexes including accuracy, recall, F-measure and precision were used for comparison. The experimental results revealed that the TCK has superior performance than the conventional Tri-training algorithms and the Tri-training algorithms using only cross-entropy or K-nearest neighbor strategy.

• 한국가스학회지
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• 제28권2호
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• pp.84-92
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• 2024

본 연구는 특정 사용자들이 효과적으로 사용할 수 있는 VR 안전교육콘텐츠를 개발하기 위해 사용자 참여 디자인 방법론(UCD)을 적용하였다. 이에 따라 UCD 기반의 설계를 통해 얻은 인사이트를 VR 매체에 특화시키고, 효율적인 설계 활동이 가능하도록 방법론을 개발하였다. 개발된 UCD는 다음과 같은 주요 활동으로 구성된다: 첫째, 사용자 니즈와 관련된 다양한 자료를 활용하여 설계 방향을 수립하는 '컨셉 도출'; 둘째, VR 특성을 내용과 구현적 측면으로 나누어 설계하는 '디자인 설계'; 셋째, 프로토타입을 구현하는 '개발'; 넷째, 사용자 집단을 포함한 전문가와 일반인 집단으로 종합적인 검토를 진행하는 '평가'; 마지막으로 최종 콘텐츠를 완성하는 '완료'이다. 본 연구에서 제안하는 프로세스는 기존 UCD와 달리 콘텐츠 개발 과정이 설계 내용 개선에 집중될 수 있도록 다음과 같이 탄력적으로 운영할 수 있다. '① 디자인 설계 → 개발 → 평가 → 완료', '② 디자인 설계 → 개발 → 완료', '③ 디자인 설계 → 개발 → 평가 → 보완 → 디자인 설계 → 개발 → 평가 → 완료' 등으로, 이를 통해, VR 안전교육콘텐츠의 품질과 사용자의 만족도를 높일 수 있다.

• 한국항공우주학회지
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• 제49권10호
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• pp.883-892
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• 2021

본 논문에서는 드론을 활용한 감시정찰 임무의 효율성을 향상하기 위해 드론 탑재장비에서 실시간으로 구동 가능한 딥러닝 기반의 객체 인식 모델을 개발하는 연구를 수행하였다. 드론 영상 내 객체 인식 성능을 높이는 목적으로 학습 단계에서 학습 데이터 전처리 및 증강, 전이 학습을 수행하였고 각 클래스 별 성능 편차를 줄이기 위해 가중 크로스 엔트로피 방법을 적용하였다. 추론 속도를 개선하기 위해 양자화 기법이 적용된 추론 가속화 엔진을 생성하여 실시간성을 높였다. 마지막으로 모델의 성능을 확인하기 위해 학습에 참여하지 않은 드론 영상 데이터에서 인식 성능 및 실시간성을 분석하였다.

• 한국군사과학기술학회지
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• 제27권2호
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• pp.189-196
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• 2024

Classification of drones and birds is challenging due to diverse flight patterns and limited data availability. Previous research has focused on identifying the flight patterns of unmanned aerial vehicles by emphasizing dynamic features such as speed and heading. However, this approach tends to neglect crucial spatial information, making accurate discrimination of unmanned aerial vehicle characteristics challenging. Furthermore, training methods for situations with imbalanced data among classes have not been proposed by traditional machine learning techniques. In this paper, we propose a data processing method that preserves angle information while maintaining positional details, enabling the deep learning model to better comprehend positional information of drones. Additionally, we introduce a training technique to address the issue of data imbalance.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회 논문집
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• pp.44-51
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• 2005

Water flow in rivers during flood season can be 10 to 100 fold higher than normal seasons (low precipitation) in Japan and predicting flood runoff is essential for operating reservoirs with discharging gates. Abundant experiences and knowledge are requisites for operators to be able to make efficient decisions at work. This research investigated a method to transfer technical knowledge by acquiring skills and knowledge from actual dam operators and by using the information to construct an educational training system. The purpose of the research was to enable the execution of a secure and rational reservoir operation during flood period. The educational training system for reservoir operation was developed with the focuses on acquiring knowledge on hydraulics and hydrology and learning about decision making related to the reservoir operation as well as the timing of control. The system is capable of conducting education that corresponds to individual levels in each location. Of the educational training methods, a lecture method that uses textbooks is effective for the understanding of basic knowledge and concepts while a training method that uses a simulation device is essential for the practice of advanced and specialized procedures in specific fields. Simulation devices are used in operational training for airplane flight and driving cars and trains. The educational system presented here was designed to provide further assistance to those who have acquired basic knowledge and concepts through textbooks and also to at low them to perform the satisfactory operation of dam equipment. Our research proposes a method which can realize a system to acquire technical skills-the skills which are the foundation of technical knowledge and operation.

• 산업진흥연구
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• 제1권1호
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• pp.71-77
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• 2016

본 연구의 주된 목적은 중소기업의 현장에서 각종 프로그램을 교육하고 있는 현장교육생들을 대상으로 현장교육이 업무생산에 어떠한 영향을 미쳤는지를 실증적으로 밝혀 보는데 있다. 연구결과 교육훈련의 하위영역인 교육 경험, 교육 동기, 교육 만족도, 인구학적 특성과 교육훈련의 성과, 그리고 생산성 향상의 하위 영역인 업무 생산성, 산업 복지, 조직관리, 교육 기간 등과 밀접한 상관관계가 있으므로 교육훈련의 하위 변인들을 적절히 조절함으로써 업무의 교육 경험을 극대화 할 수 있다. 본 연구는 향후 실업자(청년 실업자 포함) 재취업 현장교육이 빛을 발하고 보다 질 높은 좋은 프로그램을 개발하여 만족스러운 교육이 되도록 하는 정책적 함의 및 시사점을 제공하였다.

• ETRI Journal
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• 제26권6호
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• pp.615-621
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• 2004

Next generation mobile communication system, such as IMT-2000, adopts Turbo codes due to their powerful error correction capability. This paper presents a block-wise maximum a posteriori (MAP) Turbo decoding structure with a low memory requirement. During this research, it has been observed that the training size and block size determine the amount of required memory and bit-error rate (BER) performance of the block-wise MAP decoder, and that comparable BER performance can be obtained with much shorter blocks when the training size is sufficient. Based on this observation, a new decoding structure is proposed and presented in this paper. The proposed block-wise decoder employs a decoding scheme for reducing the memory requirement by setting the training size to be N times the block size. The memory requirement for storing the branch and state metrics can be reduced 30% to 45%, and synthesis results show that the overall memory area can be reduced by 5.27% to 7.29%, when compared to previous MAP decoders. The decoder throughput can be maintained in the proposed scheme without degrading the BER performance.

• 한국조리학회지
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• 제11권4호
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• pp.59-76
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• 2005

The purpose of this study is to illuminate the influence happened by the process of acquirement of professional cooking skills related to satisfaction with duty of hotel cooks according to the development and expansion of the food service industry. First, interaction with colleagues, working environment, accomplishment of duty, satisfaction of duty etc. have a big effect on improvement of cooking skills, that is, acquirement and accumulation of cooking skill. Therefore, it's confirmed that improvement of skill can be promoted if we focus on this kind of factors and meet more positively. Second, field education training should be operated professionally with systematic education training. Third, duty rotation has an effect on skill advancement. It can be interpreted that oppressive feelings caused by ability, skill, knowledge, human relations etc. which is required in new business related to frequent change of the business in one's charge can have an effect on duty satisfaction. It's considered that comprehensive and in-depth study should be accomplished in future concerning duty rotation, field training.