• Title/Summary/Keyword: Reinforcement Methods

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Stability Analysis of the Excavation Slope on Soft Ground using Sheet Pile (널말뚝을 이용한 연약지반 굴착사면의 안정해석)

  • Kang, Yea Mook;Cho, Seong Seop;Lee, Dal Won
    • Korean Journal of Agricultural Science
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    • v.23 no.1
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    • pp.13-24
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    • 1996
  • The following results were obtained by analyzing the displacement, strain and stability of ground at the soft ground excavation using sheet pile. 1. Before setting the strut, the horizontal displacement was large on the upper part of excavated side, but after setting the strut, it showed concentrated phenomenon while being moved to go down to the excavated side. 2. After setting the strut, the displacement of sheet pile was rapidly decreased about a half compared with before setting the strut. The limitation of excavation depth was shown approximately GL-8m after setting double stair strut. 3. Maximum shear strain was gradually increased with depth of excavation, and local failure possibility due to shear deformation at the bottom of excavation was decreased by reinforcement of strut. 4. Maximum horizontal displacement of sheet pile at GL-7.5m was shown 0.2% of excavation depth in elasto-plastic method, and 0.6% in finite-element methods, and the maximum displacement was occurred around the bottom of excavation. 5. To secure the safety factor about penetration depth in the ground of modeling, D/H should be more than 0.89 in the case of one stair strut, and more than 0.77 in the case of double stair strut. 6. The relation of safety factor and D/H about the penetration depth was appeared, Fs=0.736(D/H) + 0.54 in the case of one stair strut, and Fs=0.750(D/H) + 0.62 in the case of double stair strut.

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Establishment of Rebar Quantity Estimation in BIM-based Initial Design Phase (BIM기반 초기 설계 단계 철근 물량 산출 프로세스 구축)

  • Song, Chi-Ho;Kim, Chee-Kyeong;Lee, Si Eun;Choi, Hyunchul
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.29 no.5
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    • pp.447-454
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    • 2016
  • In the meantime, looking at the present status of how to estimationte the quantity of rebar based on 3D BIM getting the limelight in these days, commercial BIM tools provide rebar modeling functions however it takes a vast amount of modeling time for modeling of rebar in use of that function hence there is no BIM software at present for practical use. Therefore, in this study, we organized and presented a practical rebar quantity estimationtion process in BIM-based design work-site and intended to develop a program named Rebar Automatic Arrangement Program - hereinafter called RAAP - which enables automatic rebar arrangement based on much more precise cross-sectional information of bars in column, beam, slab and wall than the one from existing 2D method under the conditions without any cross-sectional information in the initial design phase. In addition, we intended to establish rebar quantity estimationtion process in the initial design phase through interworking of modeling & quantity estimationtion functions in consideration of joint, anchoring length of BuilderHUB as a BIM software with RAAP. The results from this study are practical in developing a technology that is able to estimationte quantity with more improved reliability than the one from existing 2D-based methods with less effort when the quantity of framework is estimationted in the uncompleted state of cross-sectional design for structural members in the initial design phase of a construction project. And it is expected that it could be utilized as a basic study from which a reasonable quantity estimationtion program can be established in the initial design phase.

Preliminary Study of the Status of School Counseling and Demands for the Service: Designed for Universities to Provide Their Local Communities with Counseling and Educational Service of Adolescence - Focusing on middle and high schools in Changwon - (대학에서 지역사회에 청소년 상담과 교육 서비스를 제공하기 위한 학교 상담 실태 및 서비스 요구도 조사 - 창원시 중.고등학교를 중심으로 -)

  • 류경희
    • Journal of Families and Better Life
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    • v.20 no.4
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    • pp.37-52
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    • 2002
  • This study is preliminary study of the status of school counseling and demands for service at middle and high schools from universities to provide the youth middle and high schools in Changwon with counseling and educational service. The results of this research are below, First, the excessive workload became the most difficulties for operateschool counseling systems and counseling activities. Second, school counseling activities focused mainly on the formal and narrow areas of counseling such as career guidance, personality programs and intelligence test and so on. Third, the most problems which we have counselled, were friendship problems in the personal relationship, school absences in the delinquent, lack of information of sex in the sexual field, conflicts with Parents, in the family relationship, poor academic progresses in the academical and future directional problems and. character of personality difficulties in the psychological field. Fourth, the major offers from the teachers to counsel students in the school were advices, suggestions, career guidance, Preventative activities, and providing information through school counseling. Fifth, though the middle and high schools were in need of outside institutions related to counseling, It was difficult to get help because of being Ignorant of procedures or methods for using counseling and being lacking in enough information on such organizations. Sixth, ordinary students and students in danger of maladjustment besides problem students wanted to get a lot of help. Seventh, the counseling which are the most wanted from out of school was an opposite-sex relationship in the personal relationship, a lack of information on sex in the sexual fields, conflict with parents in the family problems, a strong unwillingness of study in the academical and future directional fields, and personalty difficulties In the psychological fields. Eighth, the subjects wanted to get counseling and educational service in regard to sex, addiction to PC, smoking, and ostracism and so on in counseling and education for young people. Ninth, education designed to have an adequate understanding of children turned out to be mostly needed as educational programs for parents Based on the above results, the proposals from universities for provide youth counseling and educational services are below. 1) setting up the positive publicity strategies E) developing and execution of various counseling and educational programs 3) expanding the counseling and education from maladjusted students to general students 4) expanding youth counseling and education to parental education and family counseling 5) continuous human resources improvement and training 6) reinforcement relationships with middle and high school organizations 7) building cooperation with local counseling organizations

A Basic Study on Upward Soil Nailing Combined Horizontal Drainage (수평배수공을 겸한 상향식 쏘일네일링 공법의 기초연구)

  • Kim, Hongtaek;Lee, Jungjae;Chung, Jongmin;Choi, Geunhyeok;Lee, In
    • Journal of the Korean GEO-environmental Society
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    • v.10 no.7
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    • pp.151-158
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    • 2009
  • In the early 1990s, soil nailing was first introduced as method of reinforcement for the slope stability and ground excavation, and as its application was increased the improved soil nailing was also developed. Most recently used for grout soil nailing greatly improve the methods and techniques for self-improvement techniques are classified as soil nailing. As the representative for the grout pressure method to improve the join method pressure grouting and improved method for the self-drilled soil nailing, removable soil nailing, upward soil nailing combined with horizontal drainage system. This paper is to compare upward soil nailing combined with horizontal drainage system with downward direction of the soil nailing. In order to study the limit equilibrium slope stability analysis and comparison with factor of safage, excavation for the vertical displacement for comparison with continuous analysis. According to this study, safage factor is decreased considerably using limit equilibrium analysis and makes no odds for the horizontal displacement when soil nail was installed upward.

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Research for Network on Medical Association and International Medical Tourism - Based on Centum Medical Partners - (의료협력과 국제 의료관광 네트워크에 관한 연구 - 센텀 메디컬 파트너스를 중심으로 -)

  • Park, Ki-Soo;Bae, Jong-Cheol;Choi, Bong-Joon
    • Journal of Korean Clinical Health Science
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    • v.2 no.1
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    • pp.59-71
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    • 2014
  • Purpose. Medical tourism is recently becoming a new industry with great growth potential. The South Korean government is shifting medical tourism from simple cultural tourism to a high value-added industry with a new paradigm. Methods. The government has been providing positive support and marketing policies since the introduction of the article concerning foreign patient attraction to the medical law in 2009, and various types of medical institutions around the country has participated actively in medical tourism by themselves or in cooperation of government bodies and made increasingly greater performance. Results. This study obtained the following results. The medical institutions in Korea have been making efforts to see more development and profitability in diverse ways, including medical tourism for foreign patients and the advance of the Korean medical institutions into foreign markets. However, many local governing bodies and medical institutions participating in medical tourism around the country have primarily focused on examination and treatment on the basis of foreign patients' visit to South Korea and rarely built a medical network with other countries directly for medical tourism. This study presents a case of building a local medical network and a network for international medical tourism successfully on the basis of the local medical association, CMP, which has been formed naturally in Busan. The success factors for CMP included 1) enthusiasm of the official in charge; 2) the medical level, the service level, and open-mindedness of participant medical institutions; 3) cost efficiency due to executive office management with no costs, no conflicts, and constant partnership; 4) security of non-competitive expertise for participants; 5) local factors of CMP; 6) participation of good agencies; 7) reinforcement of participation networks; and 8) post facto management and local doctor management. Conclusions. Its positive effects included patient introduction and greater profitability on an internal basis as well as construction of the collaboration system with the institutions related to medical tourism and confidence. However, there are some limitations: it is still difficult to predict performance due to the short period of their activities, and it is necessary to continue to observe their constant activities since a single medical association was involved.

Researching Possible Uses of the Zen in the Process of Training Actors (배우의 연기훈련 과정에서 선(禪)의 활용 가능성)

  • Cho, Joon-Hui
    • The Journal of the Korea Contents Association
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    • v.13 no.11
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    • pp.106-118
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    • 2013
  • I discussed how the Zen training could be used to previous acting training methods focused on the way draw efficiently subconsciousness in the process of the training of actors. It is believed that the practice of the Zen would contribute to the development of training subconsciousness of actors. I examined the validities of the Zen practices which could be helpful to young students and existing actors' training processes and started from the existing proven analyses of mental and psychological effects of it. It is certain that the practices of Zen is a new continent which has infinite possibilities of analyzing and studying in terms of thinking highly of the Zen and brain science together. If we would utilize the Zen efficiently in the course of training actors, we could achieve four elements: the first, a trigger to operate actors' subconsciousness, the second, establishing the presence of actors through the reinforcement of concentration, the third, overcoming any mental and psychological obstacles, and the fourth, the establishment of transformation skills through the combined use of left and right brains. Additionally, actors could have mental and psychological stability through the Zen practice in their daily lives. I believe that we could also find a unique Eastern actor training way through vigorous and practical following analyses and practices which are based on the Zen tradition for training actors' subconsciousness and unconsciousness.

Development of Uneven Excavation Method for Reinforcement of Ground Slope (사면보강을 위한 요철형 암반굴착 공법개발)

  • Kim, Hyun-Gi
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.10
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    • pp.259-266
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    • 2020
  • In this study, required drill bits and excavation methods were developed for an uneven drilling method that can solve the problem of performance degradation of rock bolts. The developed drill bit's excavation performance was verified using rock with a strength of 100 MPa or more. In addition, for the relative evaluation of the uneven excavation method, experimental specimens were prepared for models with and without irregularities, and tests were performed. As a result of the experiment, the model with unevenness exhibited an average critical draw resistance of 801.6 kN, which is about 1.7 times the value of 468.7 kN for the model without unevenness, thus confirming the effect sufficiently. Therefore, it is expected that the resistance performance will significantly increase despite an increase in the uneven hole diameter of 20 mm. In the future, the results of this study could be used as basic data when performing other studies using numerical analysis models and performance verification through experiments to obtain an optimized rock forming method.

Effect of Drinking and Smoking on Skin Health and Make-up (음주.흡연습관이 피부건강 화장습관에 미치는 영향)

  • Lee, Sun-Hee;Choi, Ga;Na, Young-Soon
    • Korean Journal of Human Ecology
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    • v.13 no.2
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    • pp.263-269
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    • 2004
  • This study was conducted with the aim of providing the basic data for an informative and educational program designed to give a guideline how to keep and care the skin healthy and proper. Female freshmen, enrolled in colleges in Jeonbuk provincial area, were surveyed about their status of health and way of skin care and make-up. The results of research were summarized as follows: First, 268 students(65.4%) were 19 years old or younger. Among the respondents, 219 persons(54.4%) lived in small or medium cities and 271(66.1%) showed less than 20 of body mass index($kg/m^{2}$). Second, there were statistically significant correlations between dwelling place, drinking habit(p<0.05), and subjective health status(p<0.05) with health, skin care and make-up habit. Third, drinking, subjective health status appeared to be significant variables affecting facial skin(p<0.05) and health status(p<0.01), respectively. Forth, smoking and regular meal seemed to affect the length of make-up(p<.05) and smoking esd strongly connected with the extent of make-up. The way of thinking about cosmetics were affected by the habits of drinking(p<0.05) and smoking(p<0.01), respectively. Drinking habit was the significant variable of health affecting on the belief in the effect of cosmetics. Fifth, skin health was negatively correlated with drinking and smoking habits and positively with subjective health status, BMI($kg/m^{2}$) and frequency of make-up. Sixth, healthier state of facial skin appeared to be happened with statistical significance(p<0.01) in rural areas than in urban areas and with a person of higher than 20 of BMI($kg/m^{2}$) than of less than 20 from the regression analysis. It has been estimated that there were meaningful correlations between the status of health and make-up among female freshmen. Accordingly, the concept of health reinforcement can be adopted to skin care and skin maintenance, so various and comprehensive approaching methods were required to improve and reinforce the skin management and cosmetic culture.

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A Study on Evaluation System of River Levee Safety Map to Improve Maintenance Efficiency and Disaster Responsiveness (하천제방의 유지관리 효율성 및 재해 대응성 향상을 위한 하천제방 안전도맵 평가체계 연구)

  • Kim, Jin-Man;Moon, In-Jong;Yoon, Kwang-Seok;Kim, Soo-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.9
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    • pp.20-29
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    • 2018
  • Owing to the changing climate and recent flood events, flood damage caused by river levee collapse and overflow is on the rise in Korea, making it necessary to enhance river levee maintenance technologies to deal with various flood damage scenarios. This paper proposes the evaluation system of a river-levee safety map to improve maintenance efficiency and disaster responsiveness. A river-levee safety map, indicating sliding, piping, visual inspection, scouring, and safety index of a levee fill material on a GIS map will enable the dangerous zone to be identified visually and the development of proactive measures to deal with it. This will maximize the river-levee maintenance efficiency, which is a break from traditional practice in that restoration measures are taken only after the damage has occurred. This study includes scouring and levee fill material in addition to previously-proposed sliding, piping and visual inspections. The research activities conducted in the study include 1) categorization of scouring and levee fill material based on document and data examination, 2) evaluation of sliding and piping at 5 locations on the left levee in the Nam river according to the duration time of the flood water level, and 3) evaluation of the characteristics of scouring and levee fill material at 9 locations on the left/right levee in the Nam River. The river levee safety map proposed in this study would be more useful and practical but further study on the manual for river management organization, repair and reinforcement methods, and budget is required.

Reinforcement of Long-term Care Service Specialization Need Analysis for Curriculum Development: Focused on Activity Theory (장기요양서비스 종사자 교육과정개발을 위한 요구분석 : 활동이론(Activity Theory)을 중심으로)

  • Suh, Yong-Wan;Choi, Dong-Yeon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.4
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    • pp.428-436
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    • 2020
  • The purpose of this study is to analyze the needs for developing a curriculum for strengthening the long-term care service expertise and job competency. Specifically, the researchers analyzed previous studies on national long-term care services and national policy data, and conducted focus group interviews with 14 experts from related agencies. Activity theory was applied as a framework for analysis and a questionnaire about the importance and difficulty of subjects from 25 long-term service employees was administered for validating the results of the qualitative data analysis. The upper part of the subject-goal-tool of the activity system was considered the main area of action, and the following rule-community-division was divided into contextual parts for action, and the implications for demand analysis and future operation of the online curriculum are summarized. In total, six courses were required for development. These courses could be applied to as a learner-centered flip learning for long-term care service workers and various educational methods of collective education and supplementary education have been proposed. Based on the study results, implications in the educational field for effective management of courses were suggested at the end of the study.