• Title/Summary/Keyword: project research

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Studies on the Frost Heave Revelation and Deformation Behaviour due to Thawing of Weathered Granite Soils (화강암 풍화토의 동상 발현 및 융해에 따른 변형 거동에 관한 연구)

  • 류능환;최중대;류영선
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.37 no.3_4
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    • pp.61-71
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    • 1995
  • Natural ground is a composite consisted of the three phases of water, air and soil paircies. Among the three components, water as a material is weU understood but soil particles are not in foundation engineering. Especially, weathered granite soil generally shows a large volumetric expansion when they freeze. And, the stability and durability of the soil have shown decreased with repetitive freezing and thawing processes. These unique charcteristics may cause various construction and management problems if the soil is used as a construction material and foundation layers. This project was initiated to investigate the soil's physical and engineering characteristics resulting from freezing and freezing-thawing processes. Research results may be used as a basic data in solving various problems related to the soil's unique characteristics. The following conclusions were obtained: The degree of decomposition of weathered granite soil in Kangwon-do was very different between the West and East sides of the divide of the Dae-Kwan Ryung. Soil particles distributed wide from very coarse to fine particles. Consistency could be predicted with a function of P200 as LL=0.8 P200+20. Permeability ranged from 10-2 to 10-4cm/sec, moisture content from 15 to 20% and maximum dry density from 1.55 to 1.73 g /cmΥ$^3$ By compaction, soil particles easily crushed, D50 of soil particles decreased and specific surface significantly increased. Shear characteristics varied wide depending on the disturbance of soil. Strain characteristics influenced the soil's dynamic behviour. Elastic failure mode was observed if strain was less than 1O-4/s and plastic failure mode was observed if strain was more than 10-2/s. The elastic wave velocity in the soil rapidly increased if dry density became larger than 1.5 g /cm$^3$ and these values were Vp=250, Vg= 150, respectively. Frost heave ratio was the highest around 0 $^{\circ}C$ and the maximum frost heave pressure was observed when deformation ratio was less than 10% which was the stability state of soil freezing. The state had no relation with frost depth. Over freezing process was observed when drainage or suction freezing process was undergone. Drainage freezing process was observed if freezing velocity was high under confined pressure and suction frost process was occurred if the velocity was low under the same confined process.

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A Study on the Improvement of Evaluation System for Implementation of National Forest Management (국유림경영계획 실행평가 제도 개선방안에 관한 연구)

  • Kim, Damin;Lim, Chul-Hee;Lee, Woo-Kyun;Song, Cholho
    • Journal of Korean Society of Forest Science
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    • v.104 no.4
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    • pp.640-648
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    • 2015
  • National forests have been assumed to do a leading role in carbon sequestration and creating forest resources since society demanded it due to climate change. Therefore, it is needed to check whether a national forest management plan and its evaluation are implemented effectively. As an effective planning and management is to be ensured on the basis of proper evaluation system, this research suggests to improve the evaluation system by analyzing it theoretically. Improvements for national forest management plan and its evaluation are as follows: (1) adjusting evaluation goal and time; (2) giving weighting to each work when planning; (3) writing details of change in planning and its grounds; (4) using the national forest management information systems to integrate these evaluation methods and result. Since to predict future changes in forests and achieve sustainable forest management begins at the reliable evaluation for overall process of the implemented project, the significance of this study is in proposing the improvement of evaluation system for national forest.

Comparison Study on the Moving Line Optimization in Agricultural Industry using Simulation Tool (시뮬레이션을 활용한 농식품 유통물류 동선최적화 설계방안 비교연구)

  • Park, Mueng-Gyu
    • Journal of the Korea Society for Simulation
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    • v.24 no.4
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    • pp.163-170
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    • 2015
  • This research is to focus on the method of moving line optimization in Agricultural Industry, especially Garak Wholesale Market Modernization Project, by using simulation tool. As everybody knew, it's very difficult to apply the SCM operation rules in Agricultural Industry, because the standardization system in Agricultural Industry was not completed. The five flow management factors, vehicle moving line management, customer moving line Management, Logistics Device Moving Line Management, Working Person Moving Line Management, Product display moving line management, are needed to be optimized on the basis of standardization rules, and to achieve this will be the good infrastructure to make the Agricultural SCM system. It's very different between the SCM structure of manufacturing industry and logistics industry and the SCM structure of Agricultural Industry, because the SCM in manufacturing is occur in the basis of flow management, on the contrary, the SCM of Agricultural Industry is on the basis of activity management. For these reason, this study is the first approach to apply the simulation method in the part of moving line optimization in Agricultural SCM, and in near future, This study will help all designers and operators to apply the simulation work in the part of agricultural SCM, and we hope that next advanced study will continue by using this study.

Effect of Relationship Conflict and Stress Factors on the Current Turnover Intention in Hospital Employees (병원종사자들의 관계갈등 및 스트레스 요인이 이직의향에 미치는 영향)

  • Park, Ki-Hyeok;Ha, Au-Hyun
    • Journal of Convergence for Information Technology
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    • v.10 no.2
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    • pp.167-175
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    • 2020
  • This study look at the types of conflict that can be the biggest cause of hospital staff turnover, and the project was to provide useful information for stable manpower management of hospital organizations by identifying the factors of can alleviate turnover. The research method collected survey data for administrative and nursing staff from September 16, 2019 to September 30, and conducted t-test, ANOVA, Pearson χ2, Regression analysis. According to the analysis, more than half of the respondents said they would relocate if Don't have anything to get from hospital. Factors affecting the Current turnover intention of Administration staff were Superior's egocentric remarks and action, and Unclear job instruction. And Nurses were Superiors' egocentric remarks and action, and Dismissive behavior and unpleasant remarks. Thus, the need to examine organizational culture at the organizational level and organizational culture at the department level was raised.

A Study on the Key Sucess factors Analysis Based on the Malcolm Baldridge National Quality Award (Malcolm Baldridge National Quality Award의 평가모델에 근거한 핵심성공요인분석)

  • Jung, Kyung-Hee;Cho, In-Hee;Kim, Sung-Je;Cho, Jai-Rip
    • Journal of the Korea Safety Management & Science
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    • v.10 no.4
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    • pp.297-307
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    • 2008
  • At the spots of enterprises experiencing rapid environmental changes, necessity for ceaseless managemental innovation is raised. We can't deny that management quality is also a part of such managemental innovation. Introduction of management quality by an organization is different from introduction of other individual innovative techniques. Management quality is not one time project but complete historical change program to be pursued continuously. Furthermore, it must be understood as a strategic 'Quality Journey' looking for far future of an organization. Malcolm Baldrige Model has been increasingly used in Korea as a global standard for management quality. The model, however, has shown a number of limitations in application due to nonsystematic elements in the implementation process. The deployment process of the model should be detailed through a real world case study. In this research, we proposed a quality evaluation standard model which is suitable for the Korean public enterprise based on the Malcolm Baldrige Non-profit Criteria, and examined the model. A 7-Point Likert Scale was used based on the seven categories within the 2007 Malcolm Baldrige Non-profit Criteria: Leadership, Strategic Planning, Customer and Market Focus, Management Analysis and Knowledge Management, Workforce Focus, Process Management, and Results. Furthermore, we analysed the validity and causal relationship among the factors within the model. Through the above case study, following common factors for successful Malcolm Baldrige Model have been derived. The following is a summary of the results of this study. First, for Malcolm Baldrige Model management, needs powerful support Leadership. Second, for Malcolm Baldrige Model management, needs systematic Strategic Planning. Third, for Malcolm Baldrige Model management, needs the continuous Customer and Market Focus. Fourth, for Malcolm Baldrige Model management, needs systematic Measurement Analysis and Knowledge Management. Five, for Malcolm Baldrige Model management, needs systematic Workforce Focus. Six, for Malcolm Baldrige Model management, needs systematic Process Management. The finding are surely necessary factors to arrange the human resource management for upgraded management quality, those factors help to explain why all enterprises consider human resource as the strategic view.

Analysis for Case Study of Quality Management System to Solve Corporate Problems (기업의 문제해결을 위한 품질경영시스템 적용사례 분석)

  • Seo, Suwon;Jeong, Jongpil
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.18 no.4
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    • pp.191-203
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    • 2018
  • Identify the effects of ISO quality management system on the durability of the enterprise by applying it to early startups and small - and medium-sized enterprises. In particular, the quality management system of a technology start-up small and medium sized companies is important in applying the management system to the financial, management and quality control services rather than to research and development. The quality management system is applied to the medical equipment manufacturers, mobile phone brokers, foreign Chinese companies, and components manufacturers for diesel engines.Try it. Check the case where the quality management system has been applied to the company concerned and the nonconformities have been improved. In addition, the success of the project was determined by applying the quality control system to maintain the stability and perpetuation of the company through the case of the failed selection. The company explains that recently, it must appoint internal auditors to carry out continuous improvement activities and that those who want the development and continuity of the company must reflect the quality management system.

Development of Satisfaction Evaluation Items for Degree-linked High Skills Meister Courses using the Delphi Method (Delphi 기법을 활용한 학위연계형 고숙련마이스터 과정의 만족도 평가 문항 개발)

  • Kim, Seung-Hee
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.20 no.5
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    • pp.163-173
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    • 2020
  • In this study, on-site corporate instructors participated as student-cum-workers in a degree-linked high skills Meister course to improve job competency and practical ability as proposed in the Work-Study Career Vision. Evaluation questions were then developed and their validity was verified by assessing satisfaction related to expected goals in enhancing advanced training guidance and competency as an evaluator. Satisfaction assessment was conducted based on training preparation, training implementation, training effectiveness and training administration. The Delphi Method was adopted and a total of 48 items were developed in 6 categories under 4 main areas. There were 7 evaluation items on the satisfaction of training course development under training preparation, 21 evaluation items related to the satisfaction of Off-JT and OJT courses under training implementation, 16 evaluation items related to the satisfaction of increased competency as an on-site corporate instructor and the satisfaction of enhanced practical skills and skills application at work under training effectiveness, as well as 6 evaluation items to assess satisfaction with administrative support under training administration. The final conformity assessment was conducted based on the stability, content validity ratio, consensus and convergence indicators of the developed items. Results of this study do not only apply to quality management of the high skills Meister course which is being promoted as a pilot project for work-study programs, but also serves as a rationale that may be considered as a basic research tool in the collection of various opinions to derive overall system improvement factors for the work-study high skills Meister course.

Estimation of Post Evaluation Index of Natural Disaster Prevention Projects using Structure Equation Modeling (구조방정식모델을 이용한 자연재해예방사업의 사후 평가 지수 산정)

  • Heo, Bo Young;Song, Jai Woo;Yoon, Sei Eui;Lee, Seung Oh
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.34 no.6
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    • pp.1807-1814
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    • 2014
  • Natural disaster has been hard to prevent the occurrence of itself, thus in order to reduce the economic damages and loss casualties, it is important to be prepared in cases that the disasters should occur in advance. Interest of the related project to prevent various natural disasters has been grown along with an investment in Korea. Along with this movement, when investments related to natural disaster prevention projects were built on, the post evaluation that can verify the ripple effects of those investments on the community should be emerging as an essential task. For evaluating the effects of public investment projects such as natural disaster prevention projects in this study, the related researches would continue through qualitative analyses, for example, cost-benefit analysis. Even the qualitative analysis alone cannot fully explain the effects of those projects, the diverse methods of analyzing and evaluating those effects might not have been presented in those fields. For the post evaluation of natural disaster prevention projects through the qualitative analysis, this study derived subjects that had effects on the post evaluation of natural disaster prevention projects. Also, employing the structural equation modeling (SEM), the causation between post evaluation subjects and the effects of projects were quantitatively analyzed, and the weighting factors of evaluation items were calculated respectively. Based on these results, post evaluation index formula was proposed for the natural disaster prevention projects in Korea.

An Experimental Study on the Drying Shrinkage of Concrete Using High-Quality Recycled Sand (고품질 순환잔골재를 사용한 콘크리트의 건조수축 특성에 관한 실험적 연구)

  • Song, Ha-Young;Lee, Sang-Soo;Lee, Do-Heun;Lee, Jong-Gou;Kim, Jae-Hwan;Lim, Hyon-Ung
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.2 no.1
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    • pp.136-143
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    • 2006
  • In this study, recently it is urgently required that demolition waste concrete has to be recycled on the construction because urban development is accelerated and redevelopment project is rapidly expanded, production quantity of construction and demolition waste concrete is being increased. As a results of drying shrinkage test under restrained and unrestrained condition, although workability and mechanical properites of concrete using HQRS were similar to that of concrete using natural sand, there were a great difference in deformation characteristic of dry shrinkage according to replacement ratio of HQRS. And, it makes sure that use of HQRS instead of partial nature sand was effective because drying shrinkage of concrete using 30 volume percentage of HQRS was smaller than that using only natural sand. Therefore, it is the objective of this study to provide the fundamental data about the re-application as an analysis of the drying shrinkage characteristics of concrete using HQRS and it is able to creta a high value-added by using HQRS.

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DEVELOPMENT OF MECHANICS CAI PROGRAM FOR UNIVERSITY SCIENCE STUDENT (대학일반물리학(大學一般物理學) 력학단원(力學單元) CAI 프로그램의 개발(開發))

  • Kim, Chang-Sik
    • Journal of The Korean Association For Science Education
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    • v.10 no.1
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    • pp.1-8
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    • 1990
  • Mechanical CAI Program was developed for university science student The program was mainly aimed for individual study. The program was written in BASIC and construct 130s flams. This project was supproted by Ministry of Education research fund. Summary of this study is as follows. 1. The program consisted of main, pretest, tutorial, final, and several other routines for program control. 2. This program written in BASIC. 3. 20 flames for pretest routine, 90 flames for tutorial routine, 20 flames for final test routine were developed. 4. The expected rate of achivement for final test was set 80%. 5. Average mark of final test was 70.2 point through the all course of program. This means that program was constructed of well.

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