• Title/Summary/Keyword: field study

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A Study on the improvement through the present state analysis of the industry field training (산업체 현장실습 운영 현황 분석을 통한 개선 방안에 관한 연구)

  • Park, Kyung-Woo;Park, Ik-su
    • Journal of Engineering Education Research
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    • v.19 no.2
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    • pp.97-101
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    • 2016
  • This paper examines the industry field training education model, analyze the operational status proposed improvement measures. Data were analyzed using a field training participating students participating industry last three years. On the other hand analysis field training participating students increased, industry participation has decreased. And most of the students took part in the seasonal short-term job training. In addition, it was difficult to analyze the employment status field training operations follow-up member. In this paper, a field training operations support system management models and practical training courses organized field trips how to improve. Field training operations support will be strengthened through the work associated with the company expanding participation model introduced and is expected to increase in the long-term practical training, students participate in field training system improvement. Run the job training Improvement in future research presented in this paper attempts to analyze the students' employment status and results of operations involved.

A Study of Magnetic Field Characteristic of Field coil in HTS motor (HTS 전동기용 계자코일의 자장 특성 연구)

  • 이정종;조영식;홍정표;손명환;김석환;권영길
    • Progress in Superconductivity and Cryogenics
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    • v.4 no.2
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    • pp.47-51
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    • 2002
  • In this paper, flux distribution and operating current is calculated according to the field coil change in HTS(High Temperature Superconducting) motor. In order to calculate magnetic field characteristic of the field coil. it is computed by changing the outer radius and the inner width of field coil Bio-Savart equation is used as the analysis method for the characteristic analysis of magnet. 2D and 3D FEA(Finite Element Analysis) is used for the magnetic field distribution in HTS motor The operating current is calculated by $B{\bot}$ linked With the field coil and $I_c-B curve of superconductor.

Electromagnetic field and initial stress on a porothermoelastic medium

  • Abd-Elaziz, Elsayed M.
    • Structural Engineering and Mechanics
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    • v.78 no.1
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    • pp.1-13
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    • 2021
  • In this study, the porothermoelastic problem with the effect of the magnetic field and initial stress was investigated. We applied normal mode analysis to solve the resulting non-dimensional coupled equations. Numerical results for the displacements, temperature distribution, pore pressure, stresses, induced electric field and induced magnetic field distributions are presented graphically and discussed. The medium deformed because of thermal shock and due to the application of the magnetic field, there result an induced magnetic and an induced electric field in the medium. Numerical analyses are given graphically on the square (2D) and cubic (3D) domains to illustrate the effects of the porosity parameter, magnetic field and initial stress parameter on the physical variables.

The Health Hazard of Geomagnetic Field in Dwellings (주거에서 지자기장의 위해성에 관한 기초연구)

  • Han, Jong-Koo;Park, Tong-So
    • KIEAE Journal
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    • v.5 no.1
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    • pp.43-49
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    • 2005
  • People grow up and build up most of their character through living in dwelling space and have relax and refresh at home. Creating healthy dwelling space is being considered very important in architectural planning and design for providing comfortable living environment and improving quality of life. One of the properties of the earth is that the earth has a magnetic field associated with it- the Geomagnetic field. The geomagnetic field is produced by a combination of crustal rocks, external electric current systems that surround the earth that surround the earth and currents induced in the outer layers of the earth by magnetic field variations. Human beings have evolved with the background of magnetic field, they are accustomed to living in its presence. Geopathic stress occurs at geopathic zones where the geomagnetic field is disturbed. Geopathic zones exhibit magnetic charges. Geopathic zones are characterized by variations in geomagnetism, for the geomagnetic field is not uniform but exhibits many highly localized distortions, some random, some fairly regular. These occur in geological faults, caves and underground water channel. Many research papers and experiments of the western countries indicates that the geomagnetic field affects the people and living organism in dwellings. Therefore, it is necessary to investigate the geomagnetic field and people's response in living space. In this study the Health Hazard of geomagneic field in dwelling are studied through literature survey of related science field.

Effect of near and far-field earthquakes on RC bridge with and without damper

  • Soureshjani, Omid Karimzade;Massumi, Ali
    • Earthquakes and Structures
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    • v.17 no.6
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    • pp.533-543
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    • 2019
  • This paper presents a study on the behavior of an RC bridge under near-field and far-field ground motions. For this purpose, a dynamic nonlinear finite element time history analysis has been conducted. The near-field and far-field records are chosen pairwise from the same events which are fits to the seismic design of the bridge. In order to perform an accurate seismic evaluation, the model has been analyzed under two vertical and horizontal components of ground motions. Parameters of relative displacement, residual displacement, and maximum plastic strain have been considered and compared in terms of near-field and far-field ground motions. In the following, in order to decrease the undesirable effects of near-field ground motions, a viscous damper is suggested and its effects have been studied. In this case, the results show that the near-field ground motions increase maximum relative and residual displacement respectively up to three and twice times. Significant seismic improvements were achieved by using viscous dampers on the bridge model. Somehow under the considered near-field ground motion, parameters of residual and relative displacement decrease dramatically even less than the model without damper under the far-field record of the same ground motion.

Industrial Needs Investigation on Technological Convergence Education: Focused on the Field of Nano-tech, Bio-tech, Robot, and Design (융합기술교육에 대한 산업체 수요조사 : 나노, 바이오, 로봇, 디자인 분야를 중심으로)

  • Jin, Sung-Hee
    • Journal of Engineering Education Research
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    • v.20 no.1
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    • pp.18-27
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    • 2017
  • This study aims to investigate industry needs for convergence education in the field of nano-technology, bio-technology, robot, and design. Firstly, the area of convergence technology in nano-tech, bio-tech, robot, and design fields was examined through the literature review and case study. The areas were validated by the experts review who consisted of four industry experts and four professors in the relevant fields. Second, a questionnaire was developed for investigating industry's needs on convergence education. The questionnaire consisted of three parts: 1) awareness of necessity for convergence education, 2) the needs for convergence new technology education from the perspective of industry, and 3) opinions on convergence education. The questionnaire was validated by three engineering education experts. Third, the survey was conducted in cooperation with the Sector Council of Industrial Resources. A total of 400 respondents responded to the questionnaires: 98 in the nano-technology field, 74 in the design field, 58 in the robotics field, and 170 in the bio-technology field. Fourth the industry needs for convergence education were analyzed and implications were suggested. The results of this study are expected to provide a guideline for developing convergence education programs in higher education.

A Study on the development of the safety work manual of a small construction site that takes advantage of the risk assessment methods (위험성평가 기법을 활용한 소규모 건설현장 안전작업메뉴얼 개발에 관한 고찰)

  • Park, Jun Ho;Park, Hai Chun;Lee, Kyoung Hun
    • Proceedings of the Safety Management and Science Conference
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    • 2013.04a
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    • pp.301-310
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    • 2013
  • This study compared the disasters in construction field under construction amount of 300,000,000 won and the whole construction fields in order to improve the efficacy of various industrial safety and health policies and services and examined the characteristics of disasters in construction field under 300,000,000 won. It also examined, compared and analyzed the characteristics of disaster in construction field under construction amount of 300,000,000 won that disaster prevention technical experts saw. The subjects of comparison were selected with statistical data of disaster for 2011 and those of disaster in construction field under construction amount of 300,000,000 won from January to August of 2012. And questionnaire was conducted with technical instruction experts of small-sized construction field and priority was drawn, compared and analyzed with AHP. Consequently, the results of different views between actual disaster data and experts' views were obtained. Therefore, this study suggested the characteristics of disaster in construction field under construction amount of 300,000,000 won and presented the methods for improving disaster prevention technical experts.

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A Study on Some 4-year Dental Technology Students Perceptions of Field Learning Environment(FLE) (일부 4년제 치기공학과 학생이 인지한 현장실습교육환경(FLE)에 관한 연구)

  • Hwang, Kyung-Sook
    • Journal of Technologic Dentistry
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    • v.41 no.2
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    • pp.137-146
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    • 2019
  • Purpose: This research was to examine some 4-year dental technology students perceptions of field learning environment(FLE). Methods: This study was conducted from October 15th to November 30th, 2017. 163 copies were used as the final analysis data. We surveyed questionnaire 163 of some 4-year dental technology students. The collected data were analyzed using SPSS (Statistical Package for Social Science) 22.0 for windows, and frequency analysis, chi-square test analysis, and correlation analysis were performed. Results: Satisfaction of practicing educator 3.88, satisfaction of clinical practice 3.49, major satisfaction 3.34, and university life satisfaction 3.25. Factors influencing satisfaction with clinical practice were clinical practice place, number of clinical practice sites, work done in clinical practice, and difficulties (p < .05). There was a significant positive correlation between satisfaction with clinical practice and satisfaction with major (P < .05). Conclusion: The results of this study, we were able to check the current field learning environment(FLE) and actual condition of students. Through the investigation of the desired clinical practice, it is anticipated that it will be possible to provide a field learning environment suitable for the course of the field desired by the user.

A Study on Field-to-lab Test Method for the Safe Transport and Optimum Packaging Design of the Parcel Delivery in Korea (국내 택배화물의 안전운송 및 적정포장을 위한 Field-to-Lab 시험방법 연구)

  • Oh, Jae Young;Suh, Sang Uk;Lim, Mijin
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.28 no.2
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    • pp.127-132
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    • 2022
  • The growth of e-commerce market requires more delivery packagings, which protect goods from the damage factors on the delivery. In this study, we have analyzed the distribution environment data (vibration and impact) measured in previous study and compared with global standards (ISTA, ASTM), so that we developed the testing method for Field-to-Lab simulation suitable to the domestic delivery. In order to verify the efficacy of this method, we took the Field-to-Lab tests for 3 packaged products (detergents set, glass tableware set, small furniture), which has been frequent breakages or damages on the actual delivery by e-commerce order, so that we could find out the test results were similar to those of the actual delivery occasions. In addition, we could perform redesign and improvement of the parcel delivery packagings for safe transportation by taking this Field-to-Lab test repeatedly. This test methods was finally proposed to be Korean industrial standard (KS), and is expected to be useful as a designing tool for the packaging optimization between protecting goods and reducing packaging waste.

Exploring Pre-service Earth Science Teachers' Perceptions about Learning on Geological Field Trip (야외지질학습에 대한 예비 중등 지구과학 교사의 인식 탐색)

  • Choi, Yoon-Sung;Kim, Chan-Jong;Choe, Seung-Urn
    • Journal of the Korean earth science society
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    • v.39 no.3
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    • pp.291-302
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    • 2018
  • The purpose of this study is to investigate pre-service middle school earth science teachers' perceptions about the learning of geological field trip. The study sample consists of 39 undergraduate students at the university located in a metropolitan city. Additionally, 4 pre-service earth science teachers are semi-structure interviewed. The instrument of the study includes a 5-category perception about the learning of geological field trip, which consists of needs, educational values, educational experience, teaching methods, and training for learning. The results are as follows. First, participants are important to the need and educational values of learning about the geological field trip regardless of gender and grade level. Second, all participants have experienced geological field trip in college. They have more opportunities to experiment for field trip as they advance to higher grade. There is significant difference between lower and higher graders in terms of the goal of learning about geological field trip. It needs a new lesson model to teach geology between men and women regarding teaching methods category. In order to practice geological field trip in school, participants perceive that they need the knowledge of geological context, experiment of field trips, and how to teach geological field trip to students. This study suggests that pre-service earth science teachers' perceptions include how to teach and learn geological field trip during their college year.