• Title/Summary/Keyword: Movement difficulties

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Design of an Economic Service Robot Hand Based on Biomimetics and TRIZ (생체 모방학과 트리즈를 이용한 보급형 서비스 로봇 핸드의 설계)

  • Ko, Hun-Keon;Cho, Chang-Hee;Kim, Kwon-Hee
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.34 no.11
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    • pp.1741-1747
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    • 2010
  • This work presents a study on the design of an economic service robot hand for tele-presence manipulators. The conceptual design of new robot hand is derived from biomimetics approach. Guided by the analysis of human arm' musculoskeletal structure, the fingers are actuated by cables and actuators in the forearm. High tension in the cables is achieved by screw-nut mechanism driven by DC motors. A set of combination springs is incorporated in each of the screw-nut mechanism for easy control of gripping force. The first prototype revealed difficulties with finger control and coupling problem between gripping force and wrist movement. The solutions to these problems have been derived from the contradiction analysis of TRIZ. The second design has been verified by tests on various objects with different weight and shape for full range of wrist motion.

Kim Soo-Young and the Critical Reception of Modernism in Korea (모더니즘의 비판적 수용)

  • 이승훈
    • Lingua Humanitatis
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    • v.1 no.2
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    • pp.3-20
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    • 2001
  • The concept of "modernism" has always posed problems in definition from the beginnings of "early-modernism" to our age of post-modernism and multi-culturalism. And yet, the concept has been consistently aligned with the search for new paradigms of thinking about "modernity" as the age experiences it. In this sense, this study tries to explain the meaning of the term "modern," why it still matters in the study of literature, and how to apply it to the examination of Kim Soo-Young′s poems. Kim is one of the leading poets who understood the importance of modernism in the development of Korean modern poetry. But, despite his dedication to the western literary style and modernism, Kim also attempted the renewal of traditional Confucian thought in his poems. The result of such efforts can be seen in poems such as "Difficulties of Confucius ′Everyday Life," in which Kim tries to juxtapose the ancient life of Confucius with life in a much-westernized modern Korea. Another poem "Grass" shows his eagerness to transform traditional eastern aesthetics into a new mode of thinking that encompasses both the influence of the west and changes in 20th-century Korea. Through the study of Kim′s poems in relation to the critical reception of modernism in Korea, we can conclude the following: that Kim led the modernist movement in Korea; that modernism still matters in post-modern Korean literature; and that, because Kin tried to bring together the ideas of western modernism and traditional Confucianism, his poetry not only spoke to his own time but speaks also to our multi-cultural age.

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A Study of the Strategy for Building Inchon Port as Hub for the Centralization of Logistics Integration and Network Building in the Region of Northern-East Asia and the Seoul Capital City Area (인천항의 동북아시아 및 수도권물류 복합화 네트워크화 중심지 전략에 관한 연구)

  • Seo, Moon-Sung
    • Journal of Korea Port Economic Association
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    • v.27 no.4
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    • pp.291-311
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    • 2011
  • The modern ports have become multi-functionalized and network-centralized over time. Recently the development of industry in the land behind the port area has become very important for port itself. Furthermore, the port functions as a finance center and an integrated function of the main bank of the world. It will be necessary for Inchon port to pursue the policy for building itself as a hub center for logistics integration and building network in the region of Northern-East Asia and Seoul Capital City area in order for Inchon port to support and develop various industries through utilizing each aspect of the industrial complex in these areas. By doing this, it will act as a policy for strengthening competiveness for Inchon port. The sharp increase of cargo movement from rapidly developing Industries in China will become a good opportunity for strengthening the competitiveness of Inchon port. However, considering the characteristics of the ports competitiveness, this policy must quickly overcome the difficulties of Inchon port.

A Study on Empirical Analysis Improvement in Special job of Womanpower performing ablity - Focusing on the woman soldier·police woman survey - (특정직 여성인력의 직무수행능력 향상 방안에 관한 실증 분석 - 여군·여경 설문조사를 중심으로 -)

  • Choi, Mi-Ae;Lee, Sang-Yeol
    • Korean Security Journal
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    • no.43
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    • pp.147-175
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    • 2015
  • Woman officers with the power of the future is likely to be more female officers can increase castration. These changes to the times in order to meet the recent Lady, chosen to increase the Police and military, and female employees in the movement to operate inside the police organization to efficiently is increasing. This study with regard to women soldier and police women a typical one of speecial job of womanpower, there is the purpose of study to suggest the direction to improve the job performing ability through the careful anlysis. On account of the minority in number of women soldier and police women in the group which consist of many men, there are lots of difficulties on duty. In order to keep up with the times for the expansion of opportunities for excellent womanpower, army and police should lead to stronger efforts for them. Besides, in comparison with the general work of womanpower, woman soldier and police woman have a special duty assignments in the groups wihich have a specific predisposition. In conclusion, it is necessary to have lots of politicasl support and cosideration.

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Analysis of Coast Topography by RTK GPS and Echo Sounder

  • Lee, Jea-One;Kim, Jin-Soo
    • Korean Journal of Geomatics
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    • v.2 no.1
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    • pp.57-64
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    • 2002
  • Measuring the depth of water is very important in ensuring the protection and safety of seaside. There are many difficulties in making the contour bathymetric map, and contour line due to the limitation of continuous measurement of water depth and collimation with the conventional measuring and positioning methods. But the real-time kinematic GPS (RTK GPS) positioning using a carrier phase enables us to decide a precise position without breaking a signal even under the condition of a moving environment. It is also possible to obtain an accurate depth of water in real time with a fathometer through the measuring of time delay between sending and receiving epochs. This research aims at investigation of accuracy potential of RTK GPS in combination with Echo Sounder(E/S) for the coastal mapping. Apart from this purpose, the accuracy of ambiguity resolution with the OTF(On the Fly) method was tested with respect to the initialization time. The result shows that the accuracy is better than 1cm with 5-minute initialization in the distance of 10km baseline. The seaside topography was measured by the RTK GPS only, on the other hand the seafloor topography was surveyed in combination of RTK GPS and E/S. Comparing to the volume of seaside measured by RTK GPS and digital topographical map, the difference of only 2 % was achieved. This indicates that the coastal mapping with RTK GPS is successfully conducted. In addition it is also demonstrated that the 3-dimensional perspective model resulted from the undersea topography measured by RTK GPS and E/S is very close to that from the digital map. Through this study, it was verified that RTK GPS is to be very useful method in the analysis of coastal morphology owing to its capability of getting the precise DTM for the using of harbor reclamation, dredging, and the estimation of soil movement in a river.

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A Study on the Clothing Inconvenience Levels for the Clothing Improvement of Female Arthritis Patients (여성관절염질환자의 의복개선을 위한 의복불편정도에 관한 연구)

  • Han, Seung-Hee
    • Journal of Fashion Business
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    • v.12 no.5
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    • pp.111-125
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    • 2008
  • The purpose of this study is in the investigation to relieve into the clothing inconvenience levels and to need by arthritis patients who experience clothing difficulties in daily living even without showing conspicuous physical disabilities. For this study, personal interviews were carried out with 151 female arthritis patients, using a questionnaire form consisting of a total of 206 items. Data analysis were done with spss 12.0 for the frequency analysis, cross tab analysis, t-test, and ANOVA. The findings are as follows. 1. The survey subjects were diverse in their age from 20s to 60s and 18.5% of them have need of other's assistance at the time of getting dressed or undressed of clothing. The knee part was felt to be the most uncomfortable, causing the inconveniences in wearing pants or panties. 2. The investigation into the inconvenience levels at the time of dressing or undressing of clothing was indicated that the wearing of pants was the hardest movement to arthritis patients, as the items relating to the movements for putting feet into or pulling them out of pants and those for raising pants over the hip were also accompanied by the feeling of pains. In addition, the aged arthritis patients felt the clothes-wearing movements more difficult. 3. The survey on the kind and inconvenience levels for the clothes currently being worn showed the highest wearing ratio for the pants, which were pointed out to be the most inconvenient. 4. As for the clothing improvement, the needs were located as a whole in the sufficiency in measures of pants crotch and circumference items, the flexibility in materials, the short length of pants, or the front clearance.

Fisherina Activation Plan for the Development of Marine Leisure (해양레저 발전을 위한 피셔리나 활성화 방안)

  • Kim, Sung-Gil
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.28 no.2
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    • pp.224-234
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    • 2022
  • This study is conducted to propose an activation plan for fisherinas by analyzing in depth the needs for fisherina development. For this purpose, the result is derived through the analysis of literature, in-depth interviews and Delphi methods. As a result, the need for fisherina development is shown as follows: first, the saturation due to the increase of maritime recreational vessels; second, the possibility of economic development; third, the activation of the fishing village economy. Accordingly, the problems of the fisherina are derived, first, the conflicts with fishermen and recreational vessel users, second, the financial difficulties, third, the lack of infrastructure. The activation plans for fisherinas are as follows: first, forming a consultative body centered on stakeholders; second, ensuring financial soundness; third, building infrastructure by linking businesses; and fourth, systematic supplementary plans. These results will play an important role in expanding the underdeveloped domestic fisherina business and will be another step in activating the maritime leisure industry.

Histological analysis on tissues around orthodontically intruded maxillary molars using temporary anchorage devices: A case report

  • Hui-Chen Tsai;Julia Yu-Fong Chang;Chia-Chun Tu;Chung-Chen Jane Yao
    • The korean journal of orthodontics
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    • v.53 no.2
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    • pp.125-136
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    • 2023
  • Before progress was recently made in the application of temporary anchorage devices (TADs) in bio-mechanical design, orthodontists were rarely able to intrude molars to reduce upper posterior dental height (UPDH). However, TADs are now widely used to intrude molars to flatten the occlusal plane or induce counterclockwise rotation of the mandible. Previous studies involving clinical or animal histological evaluation on changes in periodontal conditions after molar intrusion have been reported, however, studies involving human histology are scarce. This case was a Class I malocclusion with a high mandibular plane angle. Upper molar intrusion with TADs was performed to reduce UPDH, which led to counterclockwise rotation of the mandible. After 5 months of upper molar intrusion, shortened clinical crowns were noticed, which caused difficulties in oral hygiene and hindered orthodontic tooth movement. The mid-treatment cone-beam computed tomography revealed redundant bone physically interfering with buccal attachment and osseous resective surgeries were followed. During the surgeries, bilateral mini screws were removed and bulging alveolar bone and gingiva were harvested for biopsy. Histological examination revealed bacterial colonies at the bottom of the sulcus. Infiltration of chronic inflammatory cells underneath the non-keratinized sulcular epithelium was noted, with abundant capillaries being filled with red blood cells. Proximal alveolar bone facing the bottom of the gingival sulcus exhibited active bone remodeling and woven bone formation with plump osteocytes in the lacunae. On the other hand, buccal alveolar bone exhibited lamination, indicating slow bone turnover in the lateral region.

Analysis of Dance Education Content in Elementary School Physical Education Textbooks (초등학교 체육교과서 무용교육 내용 분석)

  • Bae, Myeong-Hun
    • Journal of the Korean Applied Science and Technology
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    • v.39 no.2
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    • pp.261-270
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    • 2022
  • This study was to analyze the related contents by securing 32 volumes of 8 types of physical education textbooks for grades 3, 4, 5, 6 that are being used in the school field for the revitalization of dance education. As a result, the 3rd grade expression area organized textbooks focusing on movement language and expression elements. For the 4th grade, most textbooks suggested gymnastics using balls, hoops, and ribbons. In the 5th grade, Ganggangsullae and Mask dance were suggested in relation to Korean folk dances, and Tinikling and Gustaf's skoal suggested in relation to foreign folk dances. had been In the case of 6th graders, the exploration of expression elements and the expression process were presented in relation to thematic expression, and the subject expression was made possible with a focus on creative gymnastics. Also, line dance among practical dances was presented in most textbooks. Despite the importance of the expression domain, field teachers at school are complaining of difficulties in teaching and learning due to various internal and external problems. The need for activation is raised in that the expression domain can exert effects in all cognitive, mental, and affective domains.

Application of Virtual Studio Technology and Digital Human Monocular Motion Capture Technology -Based on <Beast Town> as an Example-

  • YuanZi Sang;KiHong Kim;JuneSok Lee;JiChu Tang;GaoHe Zhang;ZhengRan Liu;QianRu Liu;ShiJie Sun;YuTing Wang;KaiXing Wang
    • International Journal of Internet, Broadcasting and Communication
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    • v.16 no.1
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    • pp.106-123
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    • 2024
  • This article takes the talk show "Beast Town" as an example to introduce the overall technical solution, technical difficulties and countermeasures for the combination of cartoon virtual characters and virtual studio technology, providing reference and experience for the multi-scenario application of digital humans. Compared with the live broadcast that combines reality and reality, we have further upgraded our virtual production technology and digital human-driven technology, adopted industry-leading real-time virtual production technology and monocular camera driving technology, and launched a virtual cartoon character talk show - "Beast Town" to achieve real Perfectly combined with virtuality, it further enhances program immersion and audio-visual experience, and expands infinite boundaries for virtual manufacturing. In the talk show, motion capture shooting technology is used for final picture synthesis. The virtual scene needs to present dynamic effects, and at the same time realize the driving of the digital human and the movement with the push, pull and pan of the overall picture. This puts forward very high requirements for multi-party data synchronization, real-time driving of digital people, and synthetic picture rendering. We focus on issues such as virtual and real data docking and monocular camera motion capture effects. We combine camera outward tracking, multi-scene picture perspective, multi-machine rendering and other solutions to effectively solve picture linkage and rendering quality problems in a deeply immersive space environment. , presenting users with visual effects of linkage between digital people and live guests.