• Title/Summary/Keyword: 4D Experience

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Ergonomic Evaluation of Indoor Bike Coordinated with Virtual Images (가상 영상과 조합된 실내 자전거의 인간공학적 평가)

  • Han, Seung Jo;Kim, Sun-Uk;Cho, Jae-Hyung;Koo, Kyo-Chan
    • Journal of Digital Convergence
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    • v.15 no.5
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    • pp.443-451
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    • 2017
  • This paper's objectives are to investigate the criteria for ergonomic evaluation of indoor bike coordinated with virtual images, and to compare HMD-based VR bike with 2D-based one. 12 experts performed delphi method with an aim to determine ergonomic evaluation criteria that were classified into 4 categories(Usability, Emotion, User Values, Reality). 2D-based bike and HMD-based one were compared according to part of final criteria through fuzzy-logic question performed by 20 subjects. Though there were no confidential difference in usability, HMD-based VR bicycle resulted in greater scores than 2D-based one in elements related with emotion, user value and reality statistically. It is expected that this research results will be used as references to evaluate ergonomic design of other indoor exercise equipments combined with VR or AR.

Determinants of successful R&D cooperations between SMEs and Public Research Institutes in Korea (산.연 협력 공동연구개발 과제의 성과 결정요인에 관한 연구)

  • Park, Il-Soo;Kim, Byung-Keun
    • Journal of Korea Technology Innovation Society
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    • v.15 no.4
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    • pp.783-814
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    • 2012
  • Innovations of SMEs are critical for economic growth and creating employment. Collaborative innovations between SMEs and Public Research Institutes has been increasingly important to overcome limitation of SMEs innovation capability. Many studies on the collaborative innovation have been focused on the issues of absorptive capacity, project administration, and relationships of actors. This study, however, focus on attribute of project leader and partnership. Data on 149 R&D collaborative projects between SMEs and a Public Research Institute were collected. Empirical results show that project leaders' capabilities and partnerships including informal collaborative relationship unification, administrative unification, and contractual unification appear to affect performances both economical and technical. It also shows that the previous experience of R&D collaboration appear to effect the relationship between project leaders' capabilities, contractual unification, and administrative unification and technical performances.

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Introducing a New Pedagogical Approach for Ergonomic Pattern Education: Leveraging a Half-Scale Body Form Based on 3D Modeling (인체공학적 패턴 교육을 위한 새로운 교수법 제안: 3D 모델링 기반으로 제작한 Half Scale Body Form를 이용하여)

  • Lin Chen;Yuhwa Hong;Juyeon Park
    • Fashion & Textile Research Journal
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    • v.26 no.1
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    • pp.78-87
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    • 2024
  • This study aimed to propose an innovative teaching pedagogy using a half-scale body form in apparel design education and evaluate its effectiveness in augmenting students' understanding of ergonomic patterns. Constructed in alignment with Phoenix's (2018) study, which used 3D body scanning and digital editing software, the half-scale body form was created through a five-step process, encompassing body measurement, 3D body modeling, fabrication of a physical half-scale body form, pattern making, and evaluation. Implemented in an undergraduate patternmaking course offered at a 4-year university in the metropolitan Seoul, this instructional approach's effectiveness was gauged through students' course projects and exit interviews. The results underscored the positive impact of the proposed teaching pedagogy on students' grasp of ergonomic pattern development, fostering a keen understanding of diverse body shapes and sizes and the relationship between the human body and garments. Furthermore, it played a role in cultivating positive body image and self-endorsement among students. The research contributes meaningfully by presenting a fresh perspective in apparel design education, seamlessly integrating advanced anthropometric and technological tools into a conventional patternmaking classroom. It offers a novel learning experience for students majoring in apparel, creating a fun and interactive teaching environment.

Initial Experience for 3-D Conformal Boost Treatments in Carcinoma of the Nasopharynx (비인강암환자에서 시행한 3차원 입체조형 방사선치료의 조기 임상결과)

  • Jang Ji-Young;Cho Moon-June;Kim Ki-Hwan;Song Chang-Joon;Kim Byoung-Kook;Kim Jun-Sang;Kim Jae-Sung
    • Korean Journal of Head & Neck Oncology
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    • v.16 no.2
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    • pp.172-176
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    • 2000
  • Objectives: To improve local control and reduce toxicity, 3-D conformal radiotherapy was used as a boost the primary tumor site following fractionated radiotherapy in patients with nasopharyngeal carcinoma. Materials and Methods: Eight patients with previously untreated nasopharyngeal carcinomas were treated with 3-D conformal radiotherapy following fractionated radiotherapy from September 1998 to April 2000. All patients had biopsy confirmation of disease before radiation therapy. Stages were II in 1, III in 5, and IV in 2. Two patients received cisplatin based chemotherapy in addition to radiation therapy; induction chemotherapy in 1, concurrent chemoradiation in 1. 3-D conformal radiotherapy delivered using 6MV Linac as a boost(range 25.2-28.8Gy, median 25.7Gy) following conventionally fractionated radiotherapy(range 50.4Gy). Average total dose ranged from 75.6-79.2Gy(median 76Gy). Follow-up time was 4-21 months(median 9.6 months). Results: Seven of 8 patients were evaluated radiologically within 3 months after completion of radiation therapy. All 7 patients were seen complete remission. One of 7 patients had distant metastasis after 5 months and local failure after 7 months. The tree interval of local recurrence was ranged from 4 - 21 months(median 10.2 months). One patient without radiological evaluation got complete remission clinically. Treatment related toxicity was grade 1-3 xerostomia, dysphagia, and mucositis. During 3-D conformal radiotherapy, there was no aggravation of any toxicity. Conclusion: Although the number of patients was small and follow-up period was short, 3-D conformal radiotherapy following conventional radiotherapy improved tumor control and dose escalation without increased toxicity. Survival and late toxicity should be evaluated through long term follow-up. In addition, it is necessary to confirm the benefits of 3-D conformal radiotherapy in nasopharyngeal carcinoma with randomized trial.

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A Study and Survey on Clinical Nurses concerning the General Items, the Motives of Determining their Profession, the Attitudes toward their Profession and the Desire and Expectation to their Profession and Society (임상간호원에 대한 연구조사)

  • 이귀향;우옥자;서문자
    • Journal of Korean Academy of Nursing
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    • v.3 no.3
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    • pp.78-96
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    • 1973
  • This study of 855 clinical nurses was conducted using a questionnaire that include tour different scales; the motives of determining their profession, the attitudes toward their profession, the general items, and desire and expectation to their profession and society. The data were analyzed by Chi-Square Test and Percentage. The results of this study included Hypothesis are as follows; The respondents were 855 (78.6%) among 1088 clinical nurses who were employed by General of Educational hospitals through the city of Seoul, Pusan, Taegu, Daejun, Kwangju, and Wonju. 1) a. In the Age Distribution, the majority of respondents were under the age of 30yrs(88.2%) and the minority were above 31yrs(11.2%), and the preponderance of the majority to minority(9:1) was noted. In compared with area, a group above 31yrs old in Seoul (6.9%) was lower than other area (16.3%). b. The types of Educational background were 16.3% in Voc.Tr. School, 66.5% in Diploma and 17.1% in Degree.146 clinical nurses were from the Degree course, and 142 (97.3%) CN among those of them were occupied around Seoul and 4(2.7%) around other area. c. In the Marital Status,71,5% were the unmarried and 28.5% were the married. And compared with the area was 20.4% in Seoul and 41.4% in other area. d. Most common Length of Clinical Experience after graduation was under tile 2yrs (55.4%), 3yrs(14.2%, and 4yrs (6.2%). In compared with area, Seoul (15.3%) was lower than other area (38.1%) above 5yrs of clinical experience, and the preponderance of tile other area to Seoul as 2.5: I was noted. 2) a. Hypothesis 1 was significant relation between the types of Educational Background of the CN and their motives for selection of Nursing, P-value was below 0.01. b. There was a significance on hypothesis 2 (P<0.01): that was relation between their motives for selection of clinical nursing field after their graduation and the area which they were employed. c. Hypothesis 4 was accepted as significant relation between the level of satisfaction of their clinical experience after their graduation and the types of educational back ground, P-value was below 0.01. d. There was a significance on hypothesis 5(P<0.01) that was relation between the CN's response about the orientation program and the area which they were employed. e. Hypothesis 6 was retained as significant relation between the area and inservice educational programme of their employed hospital was practising or not. P-value was 0.01. f. Hypothesis 7 was retained as significant relation between the area and the CN's response about the inservice educational programme of their employed. P-value was below 0.01. g. There was a significance on hypothesis 8 (P<0.0l) that was relation between the CN's experience on attending the professional meeting and the area. h. Hypothesis 10 was accepted as significant relation between the response about the present licence system and their educational background. p-value was below 0.01. i. There was a significance on hypothesis 11 (P fO.01) that was relation between the carrying out the regular and delivery vacation and the area. J. Hypothesis 12 was accepted as significant relation between the CN's consideration of the lack of leisure and their marital status. p-value was below 0.01' k. There was a significance on hypothesis 13 (P <0.01) that was relation between the CN's response about their salary and their marital status. l. Hypothesis 14 was significant relation between the most difficulties of CN during their working and the hospital which they were employed. p-value was below 0.01.

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A Study on National Identity of Adolescents of Multi-cultural Family -An Application of Heater's Theory- (다문화가족 청소년의 국민정체성에 관한 연구 -Heater의 이론을 적용하여-)

  • Jeon, Byeong-Joo
    • Journal of Digital Convergence
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    • v.12 no.4
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    • pp.33-41
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    • 2014
  • This study conducted a survey 212 adolescents in multi-cultural family to measure the level of their discrimination experience and acculturation stress by comparing with social integration analysis frame of D. Heater and examined how it affects them to national identity. Followings are the main results of this study. First, after measuring the discrimination experience level of those surveyed, their average was a bit higher than the normal level, showing 2.63(SD=.72), and their acculturation stress was 2.48(SD=.65) which is average. Second, their level of national identity showed 2.16(SD=.57), which was lower than the normal level, and there was statistically a meaningful difference between the groups depending on their academic level, parents' marital status, mother's Korean ability. Third, the factors that affected in national identity were in the order of their discrimination experience(${\beta}$=-.305), parents' marital status(${\beta}$=.286), acculturation stress(${\beta}$=-.225), academic level(${\beta}$=.186), mother's Korean ability(${\beta}$=.173). Based on these results, several ways are suggested to improve national identity of adolescents in multi-cultural family.

A Study of the Attitudes of Nurses toward the Geriatric Nursing Care (노인간호에 대한 간호원의 태도조사연구)

  • 최경옥
    • Journal of Korean Academy of Nursing
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    • v.6 no.2
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    • pp.1-9
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    • 1976
  • Presently, there is increasing demand for geriatric nursing care because of increasing preparation of elderly population due to extended age. Of particular importance in determining the effectiveness of nursing care given to the elderly is the attitude of the nurse toward the elderly patient. Knowledge of the various changes that usually occur with aging will enable the nurse to help an aged Person maximize his potential in illness and in health. The objectives of this study were : 1. To delineate the attitudes of nurses toward the geriatric nursing care. 2. To learn the influencing factors affecting the attitudes of nurses toward the geriatric nursing care. The study population defined and randomly selected is 225 nurses at one general hospital, one private hospital, two national hospitals in Seoul during the period of October l0th -20th, 1975. The questionnaire method was used. Respondents were 140 nurses. X$^2$- test and t- test were employed in analyzing the data. The questionnaire form included 54 statements which concerned the attitudes of nurses to-ward geriatric nursing care. It was divided into five areas : 1) General characteristics of study population. 2) The nurse's concepts of elderly. 3) Care of the geriatric patient. 4) Interpersonal relationship with geriatric patient. 5) Teaching of the geriatric patient. Each of the 54 statements of the questionnaire was considered to be either Positive or Negative. A Positive response was assigned the value of+1 , and a Negative response or no response was assigned the value of O. The results of the study were as follows : 1. The Investigation of attitudes of nurses toward geriatric nursing care. a. Data indicated , respondents have negative attitudes in their. concepts of elderly (74.3%) b. Data indicated respondents have positive attitudes in care of geriatric patient (64.3%). c. Data indicated respondents have positive attitudes in interpersonal relationship with geriatric patient (85% ). 4. Data indicated respondents have positive attitudes in teaching of geriatric patient (89.3%). 2. The results of study regarding the five hypothesis were as follows : a There was significant difference in the mean scores between the attitudes of nurses toward the geriatric nursing care and level of education of the nurse. b. There was no significant difference between the attitudes of nurses toward the geriatric nursing care and clinical experience, but there was significant difference between care of the geriatric patient and clinical experience. c. There was no significant difference between the attitudes of nurses toward the geriatric nursing care and shift most frequently worked, but there was significant difference between care of the geriatric patient and shift most frequently worked. d. There was no significant difference in the mean scores between the attitudes of nurses toward the geriatric nursing care and marital status, but there was significant difference in the mean scores between interpersonal relationship, teaching of geriatric patient and marital status. e, There was no significant difference in the mean scores between the attitudes of nurses toward the geriatric nursing care and experience with elderly, but there was significant difference in the mean scores between care of geriatric patient and experience with elderly.

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The use of SMA wire dampers to enhance the seismic performance of two historical Islamic minarets

  • El-Attar, Adel;Saleh, Ahmed;El-Habbal, Islam;Zaghw, Abdel Hamid;Osman, Ashraf
    • Smart Structures and Systems
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    • v.4 no.2
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    • pp.221-232
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    • 2008
  • This paper represents the final results of a research program sponsored by the European Commission through project WIND-CHIME ($\underline{W}$ide Range Non-$\underline{IN}$trusive $\underline{D}$evices toward $\underline{C}$onservation of $\underline{HI}$storical Monuments in the $\underline{ME}$diterranean Area), in which the possibility of using advanced seismic protection technologies to preserve historical monuments in the Mediterranean area is investigated. In the current research, the dynamic characteristics of two outstanding Mamluk-Style minarets, which similar minarets were reported to experience extensive damage during Dahshur 1992 earthquake, are investigated. The first minaret is the Qusun minaret (1337 A.D, 736 Hijri Date (H.D)) located in El-Suyuti cemetery on the southern side of the Salah El-Din citadel. The minaret is currently separated from the surrounding building and is directly resting on the ground (no vaults underneath). The total height of the minaret is 40.28 meters with a base rectangular shaft of about 5.42 ${\times}$ 5.20 m. The second minaret is the southern minaret of Al-Sultaniya (1340 A.D, 739 H.D). It is located about 30.0 meters from Qusun minaret, and it is now standing alone but it seems that it used to be attached to a huge unidentified structure. The style of the minaret and its size attribute it to the first half of the fourteenth century. The minaret total height is 36.69 meters and has a 4.48 ${\times}$ 4.48 m rectangular base. Field investigations were conducted to obtain: (a) geometrical description of the minarets, (b) material properties of the minarets' stones, and (c) soil conditions at the minarets' location. Ambient vibration tests were performed to determine the modal parameters of the minarets such as natural frequencies and mode shapes. A $1/16^{th}$ scale model of Qusun minaret was constructed at Cairo University Concrete Research Laboratory and tested under free vibration with and without SMA wire dampers. The contribution of SMA wire dampers to the structural damping coefficient was evaluated under different vertical loads and vibration amplitudes. Experimental results were used along with the field investigation data to develop a realistic 3-D finite element model that can be used for seismic risk evaluation of the minarets. Examining the updated finite element models under different seismic excitations indicated the vulnerability of such structures to earthquakes with medium to high a/v ratio. The use of SMA wire dampers was found feasible for reducing the seismic risk for this type of structures.

Development of Convergence Education Program Based on 3D Panorama Virtual Fieldwork Courses on Water Spider in Eundaeri (은대리 물거미 서식지의 3D 파노라마 가상야외학습장 융합교육 프로그램 개발)

  • Yoon, Ma-Byong
    • The Journal of the Korea Contents Association
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    • v.19 no.10
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    • pp.607-619
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    • 2019
  • This study used Natural Monument water spiders and their habitats as educational contents, so those students could have a scientific literacy and the beautiful memories of Eundaeri's marshes through developing a virtual fieldwork courses (VFC) and observing the ecology of water spiders. In order to develop the program, the 2015 revised national curriculum and its textbooks were analyzed. In accordance with the STEAM model, we developed teaching-learning materials for 7 classes. Students produced 3D panorama virtual fieldwork courses (PVFC) about water spider by team-based cooperative learning, enabling them to emotionally experience the meaning and value of water spiders. A panel of six education experts verified the validity of the program and found it to be fairly valid at 4.24 (CVI = .88) on the 5-point Likert scale. In order to confirm the suitability of the program, students in the middle school science clubs participated in pilot testing camp. Their average classes satisfaction was 4.24 and students were very satisfied with the usefulness of the program, the fresh learning contents, and the suitability of the convergence education class. This study could contribute to convergence education related to ecology and virtual reality for adolescents.

Accuracy Analysis for Slope Movement Characterization by comparing the Data from Real-time Measurement Device and 3D Model Value with Drone based Photogrammetry (도로비탈면 상시계측 실측치와 드론 사진측량에 의한 3D 모델값의 정확도 비교분석)

  • CHO, Han-Kwang;CHANG, Ki-Tae;HONG, Seong-Jin;HONG, Goo-Pyo;KIM, Sang-Hwan;KWON, Se-Ho
    • Journal of the Korean Association of Geographic Information Studies
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    • v.23 no.4
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    • pp.234-252
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    • 2020
  • This paper is to verify the effectiveness of 'Hybrid Disaster Management Strategy' that integrates 'RTM(Real-time Monitoring) based On-line' and 'UAV based Off-line' system. For landslide prone area where sensors were installed, the conventional way of risk management so far has entirely relied on RTM data collected from the field through the instrumentation devices. But it's not enough due to the limitation of'Pin-point sensor'which tend to provide with only the localized information where sensors have stayed fixed. It lacks, therefore, the whole picture to be grasped. In this paper, utilizing 'Digital Photogrammetry Software Pix4D', the possibility of inference for the deformation of ungauged area has been reviewed. For this purpose, actual measurement data from RTM were compared with the estimated value from 3D point cloud outcome by UAV, and the consequent results has shown very accurate in terms of RMSE.