• 산업경영시스템학회지
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• 제17권31호
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• pp.33-42
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• 1994

This paper aims to analyse and appraise the effect of human performance to the variation of quality through constructing the dynamic recursive control model considering the human factor in a single production system. The model studied in this paper has a great advance from the point of combinating three technologies(quality control, automatic control theory, human engineering) and can also be expanded in several applications.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제24권4호
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• pp.337-345
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• 2021

The immune system is not fully developed in human neonates and infants; breastfeeding is important in this stage as the bioactive components of human breast milk are known to have anti-microbial, anti-inflammatory, and immunomodulatory effects, and can therefore contribute to an infant's immunity against allergies, asthma, autoimmune diseases, and inflammatory bowel disease. Herein, the positive effect on the immune system by human colostrum and milk are reviewed.

• 한국CDE학회논문집
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• 제12권6호
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• pp.429-440
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• 2007

The purpose of this research is to develop the Human-centered CAD system in which human factors can be considered during the design stage. For this system there are several issues to research, like the digital human modeling technology, the definition of interactions between human and product, the simulation of human motion when using the product, and the bio-mechanical analysis of human, etc. This paper introduces how to construct the kinematical structure of the digital human model. For our digital human model H-ANIM, the international specification of humanoid animation is referenced. And we added the skeleton geometry and the skin surfaces to our model. And it can manipulate its joints by forward kinematics. Also the IKAN inverse kinematics algorithm is adopted to support the posture prediction of the digital human model in the product environment. All of these ideas are implemented using CAD API so that we can apply these functions to the current commercial CAD systems. In this manner, the human factor issues can be effectively taken into account at the early design phase and the costs of bio-mechanical evaluation will be significantly reduced.

• 융복합기술연구소 논문집
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• 제3권2호
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• pp.23-29
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• 2013

When a human operator interacts with a virtual wall that is modeled as a virtual spring model, the lager the stiffness of the virtual spring is, the more realistic the operator feels that the virtual wall is. In the previous studies, it is shown that the maximum available stiffness of a virtual spring to guarantee the stability can be increased when the first-order-hold method is applied, however the effects of a human impedance on the stability are not considered. This paper presents the effects of a human impedance on stability of haptic system with a virtual spring and a first-order-hold (FOH) method. The human impedance model is modeled as a linear second-order system model. The relations between the maximum available stiffness of a virtual spring and the human impedance such as a mass, a damping and a stiffness are analyzed through the MATLAB simulation. It is shown that the maximum available stiffness is proportional to the square root of the human mass or damping respectively.

• 대한안전경영과학회지
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• 제5권3호
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• pp.1-10
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• 2003

Accident analyses are used to identify common factors contributing to occupational accidents and to give recommendations for accident prevention. In this study we developed a human error analysis system that can be used easily at the industries. This accident analysis system can be used to develop accident prevention programs to reduce human initiated accidents.

• KIEAE Journal
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• 제3권2호
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• pp.25-32
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• 2003

This study deals with the investigation of recognition structure on architectural environment and reconstruction of it by artificial intelligence. To test the possibility of the reconstruction, recognition structure on architectural environment is analysed and each steps of the structure are matched with computational methods. Edge Detection and Neural Network were selected as matching methods to each steps of recognition process. Visual perception system established by selected methods is trained and tested, and the result of the system is compared with that of experiment of human. Assuming that the artificial system resembles the process of human recognition on architectural environment, does the system give similar response of human? The result shows that it is possible to establish artificial visual perception system giving similar response with that of human when it models after the recognition structure and process of human.

• 제어로봇시스템학회논문지
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• 제20권6호
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• pp.599-605
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• 2014

This paper presents the interactive behavior modeling method based on POMDP (Partially Observable Markov Decision Process) for HRI (Human-Robot Interaction). HRI seems similar to conversational interaction in point of interaction between human and a robot. The POMDP has been popularly used in conversational interaction system. The POMDP can efficiently handle uncertainty of observable variables in conversational interaction system. In this paper, the input variables of the proposed conversational HRI system in POMDP are the input information of sensors and the log of used service. The output variables of system are the name of robot behaviors. The robot behavior presents the motion occurred from LED, LCD, Motor, sound. The suggested conversational POMDP-based HRI system was applied to an emotional robot KIBOT. In the result of human-KIBOT interaction, this system shows the flexible robot behavior in real world.

• 한국CDE학회논문집
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• 제22권2호
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• pp.181-189
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• 2017

In this paper, we develop a human error-free wire connection guide system. The only related work is Japanese patent by Hitachi. The patent is guiding the wire connection using PC server. And no implementation details have been reported publicly. We propose a new method based on smart mobile devices. The proposed methods are registered as two Korean patents. We implement a prototype wire connection guide system to verify the patents. Through human experiments, we verify the system can reduce the human error more than 90% and speed up the connection process more than twice faster than working without the system. To be used in the industrial fields, the prototype system needs more product packaging works.

• 대한의용생체공학회:의공학회지
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• 제15권1호
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• pp.57-62
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• 1994

The demand of image compression is increasing now for the integration of medical images into the hospital information system. Even though the quantitative distortion can be measured from the difference between original and reconstructed images, it doesn't include the nonlinear characteristics of human visual system. In this study, we have evaluated the nonlinear characteristics of human visual system and applied them to the compression of medical images. The distortion measures which reflect the characteristics of human visual system has been considered. This image compression procedure consists of coding scheme using JND (Just Noticeable Difference) curve, polynomial approximation and BTC (Block Truncation Coding). Results show that this method can be applied to CT images, scanned film images and other kinds of medical images with the compression ratio of 5-10:1 without any noticeable distortion.

• 경영과정보연구
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• 제33권2호
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• pp.135-153
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• 2014

본 연구는 유연한 조직의 원천이 되는 개별 인적자원의 유연성이 조직의 경쟁우위를 위한 핵심적인 요소라고 판단하고 조직에서 인적자원유연성을 확보하기 위해 인적자원관리시스템의 주요 구성요소가 인적자원 유연성에 미치는 영향을 연구하고, 인적자원 유연성의 개념과 하위차원에 대한 고찰을 통해 이들이 조직성과에 어떤 영향을 미치는지를 검증하고자 하였다. 이를 위해 선행연구를 바탕으로 이론연구를 수행하였으며, 국내 138개 주요 기업을 대상으로 조직수준의 실증분석을 실시하였다. 실증분석 결과, 인적자원관리시스템의 구성요소인 선택적 채용, 폭넓은 훈련, 결과지향 평가, 인센티브 보상은 모두 기업의 재무성과에 정(+)의 영향을 미치는 것으로 나타났다. 또한 인적자원관리시스템과 인적자원유연성의 관계를 검증한 결과 선택적 채용, 결과지향 평가, 인센티브 보상은 인적자원의 기술유연성, 행동유연성, 관계유연성에 정(+)의 영향을 미치는 것으로 나타났으나 폭넓은 훈련은 인적자원유연성의 모든 하위차원에 부(-)의 영향을 미치는 것으로 나타났다. 그리고 인적자원관리시스템과 조직성과의 관계에서 인적자원유연성의 매개효과를 검증하였는데 그 결과 부분적으로 매개효과가 있는 것으로 나타났다. 본 연구의 이론연구와 실증분석 결과는 기업의 인적자원관리제도의 운영과 인적자원개발과 종업원의 경력개발을 위한 교육훈련 설계에 많은 시사점과 한계점을 제시하였다.