• Title/Summary/Keyword: The future settlement

Search Result 251, Processing Time 0.029 seconds

Meta Analysis on the Trade Settlement Study and Research Outlook (무역결제 분야 연구의 메타분석과 전망)

  • Hee-Jung Yeo
    • Korea Trade Review
    • /
    • v.46 no.2
    • /
    • pp.371-387
    • /
    • 2021
  • This paper analyzed 110 papers related to the field of trade settlement published in the Korea Trade Review for 40 years from 1980 to 2019. This study tried to provide an insight on research topics and to suggest future research directions. The papers were analyzed according to the detailed topics of trade settlement. Research trends were identified every ten years by investigating the most frequently used titles and keywords. The analysis found that the direction of the research changed in line with the changes in trade settlement practices. Future research lies in the field of electronicization of traditional settlement methods, search for alternative settlement methods, individual international microtransaction and trade fraud.

Lesson and proposal of revised equations from the Pan method application case for soft clay improvement (PBD 공법 시공사례를 통한 교훈 및 개선안 제안)

  • 유한구;조영묵;김종석;박정규
    • Proceedings of the Korean Geotechical Society Conference
    • /
    • 2001.10a
    • /
    • pp.147-158
    • /
    • 2001
  • In general, two methods have been used to predict settlement of soft ground. One method is Terzaghi's one dimensional consolidation theory which gives time-settlement relationship using the standard consolidation test results. The other is forecasting method of ground settlement to be occured in the future using in-situ monitoring data. The above both methods have some defects in application manner or in itself especially in very deep and soft clayey ground. In view of the lessons and experiences of soft ground improvement projects, several techniques were proposed for more accurate theorectical calculation of consolidation settlement as follows ; ① Subdivision of soft ground, ② Consideration of secondary compression, ③ Using the modified compression index, etc. And also, revised hyperbolic fitting method was suggested to minimize the error of predicted future settlement. In addition, revised De-Beer equation of immediate settlement of loose sandy soil was proposed to overcome the tendency to show too small settlement calculation results by original De-Deer equation. And also, considering the various effects of settlement delay in the improved ground by vertical drains, time-settlement caculation equation(Onoue method) was revised to match the tendency of settlement delay by using the characteristics of discharge capacity decreases of vertical drain with time elapse by the pattern of hyperbolic equation.

  • PDF

Regional Revitalization and Settlement Improvement from the point of view of the Local Residents - A Case Study on the Nakathu-Mura of Wakayama Prefecture in Japan - (지역주민의 시각에 의한 정주환경개선과 지역활성화 - 일본 와카야마현 나카츠무라를 중심으로 -)

  • Kim, Young-Joo;Choi, Soo-Myung;TAKAHASHI, Tsuyoshi
    • Journal of Korean Society of Rural Planning
    • /
    • v.10 no.3 s.24
    • /
    • pp.19-26
    • /
    • 2004
  • In this study, a new model for improving the settlement environment and revitalizing hilly and mountainous areas was presented. A case study was conducted in two rural villages of Nakatsu-Mura in Wakayama-Prefecture, Japan. The settlement environment was evaluated from the point of view of the local residents, and the expectation of the local residents about the regional revitalization of their village in the future was assessed. From the analysis, each factor used far the assessment displayed characteristics of the two rural villages well. The type of improvement in rural villages was classified by a combination of the degree of satisfaction over the current settlement environment and expectation about the regional revitalization of the villages in the future. A method for improving and revitalizing settlement environments was clarified.

Settlement Data Acquisition and Analysis Technique by Personal Computer (Personal Computer를 이용한 침하 안정 관리기법)

  • 송정락;여유현
    • Proceedings of the Korean Geotechical Society Conference
    • /
    • 1991.10a
    • /
    • pp.332-347
    • /
    • 1991
  • Accurate prediction of future settlement is essential for the settlement control of soft soil by pre-loading method. To predict future settlement in clayey soft soils, several methods like Asaoka method, Hyperbolic Method and Hoshino method are currently being used. These methods predict the future sett1ement by mathmatical treatment of the measured settlement data on the basis of consolidtion theory and empiricism. But the correlation coefficient between the measured and the predicted settlement was relatively low (0.8~0.9). Also, the prediction of future settlemet for the design load is very difficult. In this article, the measured field settlement data was treated as the the field consolidation test. Hence, condolidation coefficient(Cv) and compression index(Cc) was evaluated from the field settlement data. Cv and Cc values from field data was used to calculate the degree of consolidation and settlement at desired time. By this method, the correlation coefficent between the measured and the predicted settlement was significantly increased(0.97~0.99). Also the settlement by the design load after the improvement of soft soil could be predicted reasonably. This method is quite rational and sound but it requires thousands of calculation steps. Today, by the aid of low priced personal computers above mentioned technique could be used much acre economically and effectively than conventional methods. This article presented the mechanisms and capacities of this method and demonstrated the enhanced correlation coefficient when applied to actual field settlement data.

  • PDF

The Characteristic of Track Settlement : State of the Arts (궤도침하 특성 : State of the Arts)

  • Jang, Sun-Jae;Lim, Nam-Hyoung;Choi, Jin-Yu;Lee, Woo-Chul
    • Proceedings of the KSR Conference
    • /
    • 2008.06a
    • /
    • pp.1672-1675
    • /
    • 2008
  • The track is an important component of rail structures. The characteristic of the track settlement must be confirmed in order to evaluate the stability of the track. It is effected by action load and the characteristic of the track material. This study investigates the mechanism of the track settlement and the effect of initial settlement and long-term settlement on the characteristic of the track settlement through literature survey. It tries to observe the future research direction of track settlement.

  • PDF

Experimental Evaluation of Ice-regolith Mixture Settlement Caused by Lunar Ice Extraction (달 얼음-월면토 결합 형태에 따른 얼음 추출로 발생하는 침하량 평가)

  • Lee, Jangguen;Gong, Zheng;Jin, Hyunwoo;Ryu, Byung Hyun
    • Journal of the Korean Geotechnical Society
    • /
    • v.39 no.6
    • /
    • pp.13-19
    • /
    • 2023
  • Lunar ice is a resource available for future human exploration in deep space and long-term extraterrestrial habitat. However, the origin and nature of lunar ice remains unclear. In addition to remote sensing, international space agencies are competitively planning and conducting missions for lunar surface exploration to determine the existence and resource extent of lunar ice. If a sufficient amount of lunar ice is confirmed, its future in-situ resource utilization is expected to be greatly beneficial. However, due to ice extraction, settlement may occur, which should be taken into account from a geotechnical engineering perspective. Herein, experimental investigations of the potential settlement caused by lunar ice extraction were conducted and different textures of lunar ice were simulated. Consequently, it was confirmed that significant settlement occurs even at the initial water content of ~10% in lunar regolith simulant-ice-mixed soil.

Analysis of Residual Settlement of Concrete Track Roadbed for High-Speed Railway (고속철도 콘크리트궤도 토공노반의 잔류침하 분석)

  • Lee, Il-Wha;Lee, Sung-Jin;Kwon, Oh-Jung;Jeong, Uhn-Ghi
    • Proceedings of the KSR Conference
    • /
    • 2007.05a
    • /
    • pp.369-374
    • /
    • 2007
  • An active application of concrete track is being expected for the future construction of Korean railroad. For the successful concrete track construction and design in earthwork areas, the residual settlement should be reasonably estimated using the proper method. The concrete track is extremely vulnerable to the damage of residual settlement. However, at the transition areas such as bridge approach, differential settlement will likely occur due to difference of stiffness, poor drainage and poor ground treatment. The maintenance is very difficult for excessive settlement on existing line, it is need to constrain the residual settlement in step of design. In this paper, it is performed the analysis of the residual settlement measured data, test results and reference to understand the residual settlement behavior of concrete track roadbed

  • PDF

Study of Determination of Allowable Residual Settlement of Concrete Track Roadbed for High-Speed Railway (콘크리트궤도 토공노반의 허용잔류침하량 결정에 관한 연구)

  • Lee, Il-Wha;Yang, Shin-Chu;Jang, Seung-Yup
    • Proceedings of the KSR Conference
    • /
    • 2007.11a
    • /
    • pp.1121-1125
    • /
    • 2007
  • An active application of concrete track is being expected for the future construction of Korean railroad. For the successful concrete track construction and design in earthwork areas, the residual settlement should be reasonably estimated using the proper method. The concrete track is extremely vulnerable to the damage of residual settlement. However, at the transition areas such as bridge approach, differential settlement will likely occur due to difference of stiffness, poor drainage and poor ground treatment. The maintenance is very difficult for excessive settlement on existing line, it is need to constrain the residual settlement in step of design. In this paper, it is performed the determination of the allowable residual settlement through various study to understand the residual settlement behavior of concrete track roadbed.

  • PDF

A Comparison of Korea and China's FTA Dispute Settlement Agreements with ASEAN (한국과 중국이 ASEAN과 체결한 FTA 분쟁해결협정 비교 고찰)

  • Choi, Song-Za
    • Journal of Arbitration Studies
    • /
    • v.23 no.1
    • /
    • pp.25-53
    • /
    • 2013
  • With the Korea-China FTA negotiations currently on the line, the importance of research into the FTA dispute settlement system has been increasing. In this paper, a comparison of Korea and China's FTA dispute settlement agreements concluded with ASEAN is contemplated, and implications for the future of the Korea-China FTA have been suggested. The FTA dispute settlement agreements with ASEAN concluded by both Korea and China provide perspectives on both sides. This agreement with ASEAN also provides a standard for the potential Korea-China FTA agreement. Specifically, the basis of these agreements with ASEAN is the same, although there are clear distinctions, described in a more detailed manner. A problem arises when there has been no discussion on dispute settlement agreements in Korea, especially of the agreement with ASEAN, whereas the opposite is true of the China counterpart. In this paper, Chinese academic FTA dispute settlement agreement studies have been also examined.

  • PDF

An Alternative Model on Hierachial Settlement System in Rural Areas (농어촌지역 하위정주체계 모형의 대안설정)

  • 최수영
    • Magazine of the Korean Society of Agricultural Engineers
    • /
    • v.32 no.4
    • /
    • pp.61-70
    • /
    • 1990
  • In rural settlement planning, its spatial development framework should be constructed on the basis of the hierachial settlement system. However, up to now, there does not exist widely - accepted model on rural settlement hierachy. In this study the basic planning principles and directions on the modelling of the settlement hireachy in rural areas have been consolidated through theoretical study and situational analysis on planning environments. And also, a new yardstick on the grading of the middle - level centers between villages and rural towns has been tried to find out. The research resulted that the existance of periodical rural market might be used as a simple and innovative yardstick on the hierachial ordering of rural settlement system. Based on the above results, an alternative 4 - step model of rural settlement hierachy was proposed ; Rural Town(county hall sitted) -Market Center(having standard periodical market) - Village Center(having no market) - Village. Finally, because the conclusion has been made by very limited case studies and several previous works, there should need continuous studies and checks in future for full reasoning of the proposed model.

  • PDF