• Title/Summary/Keyword: Structure movement

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Associative Motion Generation for Humanoid Robot Reflecting Human Body Movement

  • Wakabayashi, Akinori;Motomura, Satona;Kato, Shohei
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.12 no.2
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    • pp.121-130
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    • 2012
  • This paper proposes an intuitive real-time robot control system using human body movement. Recently, it has been developed that motion generation for humanoid robots with reflecting human body movement, which is measured by a motion capture. However, in the existing studies about robot control system by human body movement, the detailed structure information of a robot, for example, degrees of freedom, the range of motion and forms, must be examined in order to calculate inverse kinematics. In this study, we have proposed Associative Motion Generation as humanoid robot motion generation method which does not need the detailed structure information. The associative motion generation system is composed of two neural networks: nonlinear principal component analysis and Jordan recurrent neural network, and the associative motion is generated with the following three steps. First, the system learns the correspondence relationship between an indication and a motion using training data. Second, associative values are extracted for associating a new motion from an unfamiliar indication using nonlinear principal component analysis. Last, the robot generates a new motion through calculation by Jordan recurrent neural network using the associative values. In this paper, we propose a real-time humanoid robot control system based on Associative Motion Generation, that enables user to control motion intuitively by human body movement. Through the task processing and subjective evaluation experiments, we confirmed the effective usability and affective evaluations of the proposed system.

Geotechnical Consideration on the Conservation of the Muryong Royal Tomb (무령왕릉의 보존을 위한 지반공학적 고찰)

  • Suh, Mancheol
    • Journal of Conservation Science
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    • v.8 no.1 s.11
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    • pp.40-50
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    • 1999
  • A geotechnical research including observation of the movement of wall-structure, monitoring of groundwater, non-destructive geophysical investigation was conducted to workout a countermeasure to conserve the Muryong Royal Tomb which is the most extinguishable cultural property of the Baekje dynasty. Movement of the structure of Muryong Royal Tomb generally arises to the front chamber and its amplitude in a rainy season is twice of that in the dry season. It represents serious problem concerned about structural safety of the royal tomb in the rainy season. Movement of wall-structure is caused due to the rain infiltration through cracks in the quicklime layer within the soil mound on the top of the royal tomb and the change of the temperature inside of the tomb. Cracks found around the Muryong Royal Tomb are mostly spread in NW and SE of the tomb structure and it harmonizes with the direction of movement of wall-structure of the Muryong Royal Tomb. Counter-plans for safety and prevention of water-leakage that obstruct the movement of wall structures towards the direction of south are very important for the conservation of Muryong Royal Tomb. After getting rid of the cause of structural change by the restoration of the front chamber of the Muryong Royal Tomb, it needs to reinforce the quicklime layer for prevention of waterleak.

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Identification of Factors Affecting Industrial Innovation Movement of SME's Using Revised IPA Technique (Revised IPA 기법을 활용한 국내 중소제조업의 산업혁신운동에 영향을 미치는 요인규명)

  • Koo, Il Seob
    • Journal of the Korea Safety Management & Science
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    • v.21 no.3
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    • pp.1-9
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    • 2019
  • The Industrial Innovation Movement, based on win-win cooperation with SMEs, is a structure that enables suppliers who have struggled with corporate growth through productivity innovation due to poor manufacturing environment and lack of innovation. To this end, consultants and technical experts will support production innovation activities to improve production methods and improve productivity through process and management consulting. The purpose of this study was to explore the driving factors of the industrial innovation movement to improve the corporate ecosystem by improving the productivity of SMEs using modified IPA. The research results are as follows. First, in order to revitalize the Industrial Innovation Movement, the CEO-related elements of the participating companies should be maintained and strengthened. The motivation, education support, innovation organizational culture, the establishment of an innovation promotion system requires centralization of efforts for improvement. Second, in order to revitalize the Industrial Innovation Movement, the consultant's ability to analyze problems and suggest alternatives should be continuously strengthened. Third, in terms of the Central Promotion Headquarters, it was found that the Industrial Innovation Movement would be successful if the public information, industrial inspection for benchmarking, and provision of various information to support innovation activities were urgently improved.

Detection of Quantitatively Spread Movement of Atom on the Oxygen Generator

  • Kim, Jeong-lae;Seo, Ji-yeon;Jeong, Hyun-woo
    • International Journal of Advanced Culture Technology
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    • v.8 no.4
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    • pp.294-298
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    • 2020
  • We was constructed of the spread movement with tremor layer point by the tractile-dot structure that was analyzed the squirm quake forms of the perception movement on the atom liquid. Algorithm of squirm quake forms was used to move the spread tremor on the atom state. To detect the tiny signal, we compared the association average value of the squirm quake form on the atom state. Their subject were issued the valuation standard and perception movement for basic atom condition by the spread tremor. We take to detect the tiny scores of average during perception movement side from the spread tremor that magnetic condition get to a variation of the Ma-αAVG and Ma-αMAX-MIN with 6.25±0.35 units, that electric condition get to a variation for the El-αAVG and El-αMAX-MIN with 5.68±0.42 units. The spread tremor was to investigate the capacity of the tremor form, to uptake a spread data of spread tremor level on the CCPL that was denoted the calm-classification form by the spread perception level system. As the squirm quake forms was demanded by the spread tremor signal, max-average values of perception movement were checked the spread position for association average data. We make mention of squirm quake forms for a signal association and a quake data signal of relation system.

Modeling of rain-wind induced vibrations

  • Peil, Udo;Nahrath, Niklas
    • Wind and Structures
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    • v.6 no.1
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    • pp.41-52
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    • 2003
  • Rain-wind induced vibrations of cables are a challenging problem in the design of cable-stayed bridges. The precise excitation mechanism of the complex interaction between structure, wind and rain is still unknown. A theoretical model that is able to accurately simulate the observed phenomena is not available. This paper presents a mathematical model describing rain-wind induced vibrations as movement-induced vibrations using the quasi-steady strip theory. Both, the vibrations of the cable and the movement of the water rivulet on the cable surface can be described by the model including all geometrical and physical nonlinearities. The analysis using the stability and bifurcation theory shows that the model is capable of simulating the basic phenomena of the vibrations, such as dependence of wind velocity and cable damping. The results agree well with field data and wind tunnel tests. An extensive experimental study is currently performed to calibrate the parameters of the model.

The Rationale for Seperating Fish Processing from Fisheries Industry to Manufacturing Industry (수산가공의 수산업으로부터 제조업에의 분리과정 논리 -일본의 산지수산가공을 중심으로-)

  • 장영수
    • The Journal of Fisheries Business Administration
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    • v.28 no.2
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    • pp.67-85
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    • 1997
  • The subject of this study is limited to the market of producting and the analyzed the change of the supply structures, but the wide range of the study also contains the relationship present movement of consumption and the supply stuctures. To put it concretely, the present movement of the structre and the development of the market of producting are examined with the fisheries processing firms. The factors which dominate the structure of fisheries processing are; first, fisheries products as raw materials of processing; second, man-power; third, processing facilities and techniques; forth, a market where the products will be consumed. In particular, the conditions of supply of raw materials which are major factor have been worse and worse due to exhaustion of marine resources and so the capacity of fisheries production has been reduced. Furthermore, the conditions of manpower also are in trouble. Under the conditons, raw materials are imported largely and many companies try to make overseas enpansion for cheap manpower and raw materials. Particulaly, the relationship between consumption market and the structure of processing in a place of producton is analyzed newly. I try to show new logic that demands of consumption market are reflected strongerly to production with the development of consumption market and the rights of decision on the choice of raw materials and a processing item have been handed over to consumption market. In a word, I try to examined closely the new supply structure of fisheries products and the structure of consumption market through the analysis of the structure of processing in a place of production.

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Analysis of the Structural Robustness of Cabinet Structure Equipped with Military Vehicles (군용 차량 탑재 캐비닛 구조물의 구조건전성 분석)

  • Son, Dong-Hun;Kang, Kwang-Hee;Choi, Ji-Ho;Park, Do-Hoon
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2014.10a
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    • pp.273-276
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    • 2014
  • The development of a vehicle-mounted radar to detect the location of enemy artillery is mainly mounted during operation to the mobility of the equipment and efficiency of utilization range. It is equipped with an electronic device responsible for the operation of the radar system. Electronic equipments is performed functionality imparted without an error-specific in spite of disturbances such as vibration / shock caused by vehicle movement. Therefore, vibration / shock resistance is held to prevent damaging from vibration / shock generated from the outside environment during operation. In addition, a standardized and specified cabinet structure equipped with electronic equipment is placed in shelter to ensure additional safety for vibration / shock. In this study, it is evaluated by analytical method with vibration / shock resistance of the cabinet structures for ensuring structural safety factor is applied to the aluminum. It is verified the reliability of the structure and structural dynamics to verify by calculated natural frequencies adding the weight of the cabinet structure and the structural displacement and stress results confirmed with vibration / shock caused by the vehicle movement.

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A Case Study on the Application of EPS Construction Method Considering Abutment Displacement in Soft Ground (연약지반에서의 교대변위를 고려한 EPS공법의 적용사례 연구)

  • Kang, Hee-June;Oh, Ill-Rok;Chae, Young-Su
    • Proceedings of the Korean Geotechical Society Conference
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    • 2004.03b
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    • pp.698-705
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    • 2004
  • Application of structural load on soft ground can cause lateral movement as well as ground break due to pressing and shearing of ground. Especially, abutment supported by pile foundation can make pile deformed due to lateral movement of ground in order to have harmful effect on structure. According to the result of this study, it is required to consider disturbance of weak soil layer when using lateral movement countermeasure method by EPS construction method as a result of performing study on safety review and EPS construction method with respect to this based on site where lateral movement occurs due to backside soil filling load at bridge abutment installed on weak ground, and it is required to sufficiently consider soil reduction during design of EPS construction method due to lateral movement deformation of soft clay layer by losing ground horizontal resistance force due to plasticity of ground around pile as well as combination part damage with pile head and expansion foundation.

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Prosodic Boundary Effects on the V-to-V Lingual Movement in Korean

  • Cho, Tae-Hong;Yoon, Yeo-Min;Kim, Sa-Hyang
    • Phonetics and Speech Sciences
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    • v.2 no.3
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    • pp.101-113
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    • 2010
  • The present study investigated how the kinematics of the /a/-to-/i/ tongue movement in Korean would be influenced by prosodic boundary. The /a/-to-/i/ sequence was used as 'transboundary' test materials which occurred across a prosodic boundary as in /ilnjəʃ$^h$a/ # / minsakwae/ ('일년차#민사과에' 'the first year worker' # 'dept. of civil affairs'). It also tested whether the V-to-V tongue movement would be further influenced by its syllable structure with /m/ which was placed either in the coda condition (/am#i/) or in the onset condition (/a#mi). Results of an EMA (Electromagnetic Articulagraphy) study showed that kinematical parameters such as the movement distance (displacement), the movement duration, and the movement velocity (speed) all varied as a function of the boundary strength, showing an articulatory strengthening pattern of a "larger, longer and faster" movement. Interestingly, however, the larger, longer and faster pattern associated with boundary marking in Korean has often been observed with stress (prominence) marking in English. It was proposed that language-specific prosodic systems induce different ways in which phonetics and prosody interact: Korean, as a language without lexical stress and pitch accent, has more degree of freedom to express prosodic strengthening, while languages such as English have constraints, so that some strengthening patterns are reserved for lexical stress. The V-to-V tongue movement was also found to be influenced by the intervening consonant /m/'s syllable affiliation, showing a more preboundary lengthening of the tongue movement when /m/ was part of the preboundary syllable (/am#i/). The results, together, show that the fine-grained phonetic details do not simply arise as low-level physical phenomena, but reflect higher-level linguistic structures, such as syllable and prosodic structures. It was also discussed how the boundary-induced kinematic patterns could be accounted for in terms of the task dynamic model and the theory of the prosodic gesture ($\pi$-gesture).

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Application of C-11 Gas Target Using Finite Element Method (FEM을 이용한 C-11 기체표적의 성능평가)

  • Hur M.G.;Oh H.S.;Jung H.Y.;Park S.P.;Yang S.D.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.1699-1704
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    • 2005
  • In this research the energy degrader, which is the most fragile part of the security of a target, has been newly designed to improve the performance of the gas target. Also, the numerical analysis of the heat movement and mechanical movement during the operation of the target has been accomplished. The heat analysis and structure analysis which are using the cooling water flow and pressure in the energy degrader and the Nastran mediocrity finite element analysis program, has been considered with the heat movement and mechanical movement according to the current capacity of proton beam which determines the production yield of the radioactive isotope. Also the possible use range has been determined, and at the same time the most suitable running condition according to the current capacity of proton beam has been suggested.

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