• Title/Summary/Keyword: hand work

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Robotic Peg-in-Hole Assembly by Hand Arm Coordination (손과 팔의 협업에 의한 로봇 펙인홀 작업)

  • Park, Hyeonjun;Kim, Peter Ki;Park, Jaeheung;Jang, Ja-Ram;Shin, Yong-Deuk;Bae, Ji-Hun;Park, Jae-Han;Baeg, Moon-Hong
    • The Journal of Korea Robotics Society
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    • v.10 no.1
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    • pp.42-51
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    • 2015
  • Peg-in-hole assembly is the most representative task for a robot to perform under contact conditions. Various strategies for accomplishing the peg-in-hole task with a robot exist, but the existing strategies are not sufficiently practical to be used for various assembly tasks in a human environment because they require additional sensors or exclusive tools. In this paper, the peg-in-hole assembly experiment is performed with anthropomorphic hand arm robot without extra sensors or devices using "intuitive peg-in-hole strategy". From this work, the probability of applying the peg-in-hole strategy to a common assembly task is verified.

A Study on Design of Flexible Gripper for Handling Working of the Forging Process in Heat Resisting Environment (내열환경 단조공정에서 핸들링작업을 위한 유연 아암 그리퍼 설계에 관한 연구)

  • Yang, Jun-Seok;Koo, Young-Mok;Jo, Sang-Young;Won, Jong-Bum;Won, Jong-Dae;Han, Sung-Hyun
    • Journal of the Korean Society of Industry Convergence
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    • v.18 no.4
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    • pp.216-223
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    • 2015
  • Recently Manipulation capability is important for a robot. Interaction between a robot hand and objects can be properly controlled only is suitable sensors are available. Recently the tendency is to create robot hands more compact and high integrated sensors system, in order to increase the grasping capability and in order to reduce cabling through the finger, the palm and the arm. As a matter of fact, miniaturization and cabling harness represents a significant limitation to the design of small sized embedded sensor. Ongoing work is focusing on a flexible manipulation system, which consists of a dual flexible multi-fingered hand-arm system, and a dual active vision system.

Effective Hand Gesture Recognition by Key Frame Selection and 3D Neural Network

  • Hoang, Nguyen Ngoc;Lee, Guee-Sang;Kim, Soo-Hyung;Yang, Hyung-Jeong
    • Smart Media Journal
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    • v.9 no.1
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    • pp.23-29
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    • 2020
  • This paper presents an approach for dynamic hand gesture recognition by using algorithm based on 3D Convolutional Neural Network (3D_CNN), which is later extended to 3D Residual Networks (3D_ResNet), and the neural network based key frame selection. Typically, 3D deep neural network is used to classify gestures from the input of image frames, randomly sampled from a video data. In this work, to improve the classification performance, we employ key frames which represent the overall video, as the input of the classification network. The key frames are extracted by SegNet instead of conventional clustering algorithms for video summarization (VSUMM) which require heavy computation. By using a deep neural network, key frame selection can be performed in a real-time system. Experiments are conducted using 3D convolutional kernels such as 3D_CNN, Inflated 3D_CNN (I3D) and 3D_ResNet for gesture classification. Our algorithm achieved up to 97.8% of classification accuracy on the Cambridge gesture dataset. The experimental results show that the proposed approach is efficient and outperforms existing methods.

The Effects of Job Stress on Workers' Physiological Somatic Complaints (직무스트레스가 근로자들의 신체적 불편감에 미치는 영향)

  • Lee, Jong-Eun;Jung, Hye-Sun;Lee, Bok-Im;Kim, Soon-Lae
    • Research in Community and Public Health Nursing
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    • v.15 no.2
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    • pp.289-297
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    • 2004
  • Purpose: This study was conducted to determine factors affecting workers' physiological somatic complain using the Job Stress Model proposed by the National Institute for Occupational Safety and Health (NIOSH). Method: Data were collected from the 1st to the 30th of December 1999. The subjects were 2.123 workers employed at 155 work sites. Collected date were analyzed through SAS/PC program. Result: According to individual characteristics, younger and women groups showed significantly higher physiological somatic complaint than elder men groups. By work condition, groups with higher physiological somatic complaint included workers of irregular shift work. Dark lighting, improper temperature in winter, improper ventilation, inappropriate humidity, unpleasant work environment and crowded work place were significantly related with physiological somatic complaint. By work-related factor, physiological somatic complaint was high in those with higher variance in work load, quantitative work load, role conflict, job burden, role ambiguity and future ambiguity. On the other hand, physiological somatic complaint was low in those with little underutilization of ability. As for the relationships between physiological somatic complaint and non-work related factors, physiological somatic complaint was high in workers who had a side job, were bringing up infants alone, cleaned the house alone, cared for the elderly and disabled persons, were studying, were volunteering at another organization, and were spending 5-10 hours in religious activities per week. Physiological somatic complain was in significantly negative correlations with overall social support, supervisory support and family support, but in significantly positive correlations with co-worker support. Conclusion: The main predictors of physiological somatic complain were gender, shift work pattern, overtime work, ventilation, role ambiguity, role conflict, future ambiguity, job control, variance in work load, overall social support, worker with side job, worker who cleans the house alone, worker who is studying. These predictors explained 19.10% of the total variance of physiological somatic complain.

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Anti-humanistic Historical Researches and Beginning of Postmodern Architecture in France (반인본주의적 역사연구와 프랑스 포스트모던 건축의 발생)

  • Lee, Jong-Woo
    • Journal of architectural history
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    • v.22 no.3
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    • pp.15-26
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    • 2013
  • This research takes as its object a body of historical researches by a new generation of French architects in the 1970s, who tried to confront the deep crisis in architecture since the years 1960. The research begins by noting that the ideology of the architect as an autonomous and transcendental subject, an ideology held by the architects of the previous generation, was a main target that young architects wanted to criticize and overcome. From this observation, the research focuses on a antihumanistic project which gave basis for a significant number of historical researches on modern architecture and was the result of a reappropriation of the French structuralism intensively developed in the human and social sciences of that time in France. After a series of textual analyzes, we argue that a new perspective on the city and the relationship of the latter with the architecture on the one hand, and the proposal for an "modest" architect as an alternative figure after rejection of the autonomous and transcendental one on the other hand, have been derived as the outcome of anti-humanist historiographic works. Finally, we assume that these historical adventure gave conceptual basis for postmodern architecture in France, freed from the modern myth of unity of author and that of work of art, but tinted by a moralism requesting modesty to architects.

Historical Review of Korean Traditional Baeja, and an Exploration of its Modernization (한국 전통 배자의 복식사적 고찰과 현대화 작업)

  • Lee, Eun-Hyung;Cho, Hyo-Sook
    • Journal of the Korean Society of Costume
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    • v.59 no.9
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    • pp.115-130
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    • 2009
  • A kind of Korean traditional jacket, Baeja, has been a Korean traditional costume equipped with practicality and formative aesthetics from the Three Kingdoms period to the Joseon Dynasty. Accordingly, the researcher of this study highly valued a modern sense of Baeja with various types of design and forms and attempted to make efforts to apply it into modern life. This study provided a new direction in the modernization work of traditional costumes by creating fashion images newly interpreted corresponding to a modern sense and trend through the application of formative characteristics and noticeable elements via the coordination of traditional Baeja and modern costumes. On the one hand, it would be meaningful in terms of contributing to the activation of traditional Hanbok by providing people with ample opportunities to wear it in modern daily lives variously. On the other hand, the actual purpose of this study was to perform a modernization work for traditional costumes by attempting to conduct a crossover that could let people move into other areas freely, that is, a creative and innovative research associating the area of costume history and that of coordination.

Positive ageing: A conceptual framework

  • Sik Hung Ng;Jean Woo;Alex Kwan;Alice Chong
    • Korean Journal of Culture and Social Issue
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    • v.12 no.5_spc
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    • pp.29-43
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    • 2006
  • With longevity (75 years plus and still increasing) now commonly achievable, the new challenge for individuals and society is less concerned with adding more years to life, though that remains important, and more with adding life to years. To explore the quality of long life more fully, a concept broader than healthy ageing or active ageing is needed. For this purpose, the present article describes a framework of Positive Ageing, also known as Successful Ageing, which views the quality of long life as comprising good health, physical and cognitive functional independence, and meaningful engagement with life. Narrowly defined, it refers to old people ageing well in all these aspects. More broadly defined, it refers to ageing well from midlife on. The framework also identifiesvariables that may affect the process of ageing positively. These variables include the social-cognitive styles of control, humour and future-time perspective on the one hand, and on the other hand, resources based on finance, social network and lifestyle.

Work Related Musculoskeletal Disorders and Ergonomic Work Posture Analysis of Operating Room Nurses (수술실 간호사의 작업관련성 근골격계 질환과 인간공학적 작업평가)

  • Lee, Cheonok;Ahn, Younsoon;Kwak, Wooseok;Won, Jong Uk;Lee, Shinyoung;Kim, Chinyon;Roh, Jaehoon
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.19 no.3
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    • pp.171-181
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    • 2009
  • This study was carried out to evaluate a musculoskeletal symptom and the work posture of the nurses in an operating room who have worked in the present department for more than one year. The job analysis of operating room nurses for ergonomic work posture analysis is divided into 14 tasks. On the basis of that, a survey research and ergonomic work posture analysis are also carried out. Among 41 operating room nurses of a cancer center in Kyonggi province who responded to the self-administered questionnaire, 20 nurses were observed and videorecorded to apply Rapid Entire Body Assessment(REBA) to ergonomic work posture analysis from April 16, 2007 to May 18, 2007. The results of analysis are as follows. The prevalence rate of musculoskeletal symptoms was 75.6% and its prevalence rates by part of the body are these followings; lower back and leg/foot 43.9%, shoulder 36.6%, neck 34.1%, hand/wrist/ finger 22.0%, arm/elbow 14.6%. In accordance with the results of ergonomic work posture analysis, 4 tasks that have a REBA score of 8 have high-risk levels and require an immediate management. It shows there is a significant correlation with overall musculoskeletal symptoms and objective workloads that are estimated by REBA. In conclusion, the work conditions of operating room nurses should be improved. It is also necessary that inappropriate work postures and ergonomic work conditions are improved to prevent musculoskeletal disorders of operating room nurses.

The Effects of Mobile Smart-Work IT Resources of Resource Based View on the Work Efficiency : based on moderating effects of the perceived usefulness (자원기반관점(RBV)에서 모바일 스마트워크 IT자원이 업무효율성에 미치는 영향 - 지각된 유용성의 조절효과를 중심으로 -)

  • Lee, Min-Woo
    • Journal of Digital Convergence
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    • v.14 no.7
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    • pp.93-102
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    • 2016
  • The purpose of this study is to examine the effects of the Mobile Smart-Work IT resources on the work efficiency based on moderating effects of the perceived usefulness in the Resource Based View. The study has academic meanings and practical implications that studied widely based on moderating effects of the perceived usefulness through the Hierarchical regression furthermore on the existing study on hypothesis by standard multiple regression. The results showed that IT Infrastructure in the Mobile Smart-work IT resources by moderating effects of the perceived usefulness was found to bring positive effect on individual work efficiency and teamwork efficiency. On the other hand Business Application was found to bring positive effect on teamwork efficiency. Therefore, we expect that business firm and employees actively use the effects of the perceived usefulness with the trust that Mobile Smart-work IT resources bring positive effects on the work efficiency. It can improve this work efficiency and lead to strengthening the firm competitiveness.

Analysis on changes in work autonomy of content industry workers (콘텐츠산업 인력의 업무 자율성 변화 분석)

  • Lee, Yong-Kwan
    • Review of Culture and Economy
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    • v.20 no.2
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    • pp.3-18
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    • 2017
  • The purpose of this study is to analyze changes in work autonomy of content industry workers using Korea Working Conditions Survey(2010, 2014) and difference-differences estimation method. The results find that there was no significant change in the work autonomy (work order, work method, work speed) of the content industry worker in In the overall sample. On the other hand, analyzing the sample of 30 or more employee establishment size shows that work autonomy of the content industry worker is greatly reduced. Also, work autonomy is high when the rank or capability is high, whereas work autonomy decreases when the establishment size is large. This study implies that the content industry workers have shown quantitatively the reduction of work autonomy. It also suggests that compensation and management systems are needed to enhance the competitiveness of the content industry.