• 제목/요약/키워드: Time Integration

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A Study on developing WBS based QDBS(Quantity Database System) for the schedule and the cost data integration for road construction project (도로공사의 공정 및 공사비 연계활용을 위한 디지털 수량산출정보시스템(QDBS) 개발 연구)

  • Yun, Seok-Heon;Kim, Seong-Sig
    • Korean Journal of Construction Engineering and Management
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    • v.8 no.4
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    • pp.119-127
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    • 2007
  • Cost and Schedule is the most important information, and how efficiently manage this information is the key issue for Construction Project Management. Domestically, systematic scheduling method such as CPM network is not only used widely but integration of time and cost information also is. In order to effectively integrate and use the time and cost information, it is suggested that WBS(Work Breakdown Structure) based QDB(Quantity Database) should be generated from the design phase and, WBS and QDB related system tool should be supported. It could be helpful to relate and integrate other construction project information.

Analysis of Operational Impact for Separated Gate System in Port Container Terminal (컨테이너터미널의 분리게이트 운영효과 분석)

  • Choi Yong-Seok;Ha Tae-Young;Kim Woo-Seon
    • Journal of Navigation and Port Research
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    • v.30 no.5 s.111
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    • pp.389-396
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    • 2006
  • With the recent port environment, the integration of the separated berth is being actively progressed and the necessity of integration has been strengthening. Therefore, the application of existing gates have to review in order to reduce the truck turnaround time and to distribute the truck traffic volume in port container terminal. This paper analyzed the operation impact both the integrated gate and the separated gates. As the result of the analysis, this study suggests the separated gate system as an efficient design for gate operation considering integration of two individual berth.

Design of a loosely-coupled GPS/INS integration system (약결합 방식의 GPS/INS 통합시스템 설계)

  • 김종혁;문승욱;김세환;황동환;이상정;오문수;나성웅
    • Journal of the Korea Institute of Military Science and Technology
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    • v.2 no.2
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    • pp.186-196
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    • 1999
  • The CPS provides data with long-term stability independent of passed time and the INS provides high-rate data with short-term stability. By integrating these complementary systems, a highly accurate navigation system can be achieved. In this paper, a loosely-coupled GPS/INS integration system is designed. It is a simple structure and is easy to implement and preserves independent navigation capability of GPS and INS. The integration system consists of a NCU, an IMU, a GPS receiver, and a monitoring system. The navigation algorithm in the NCU is designed under the multi-tasking environment based on a real-time kernel system and the monitoring system is designed using the Visual C++. The integrated Kalman filter is designed as a feedback formed 15-state filter, in which the states are position errors, velocity errors, attitude errors and sensor bias errors. The van test result shows that the integrated system provides more accurate navigation solution then the inertial or the GPS-alone navigation system.

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Spatial Analyses of the 3-Bedroom Apartment Unit Plans from 1979 to the Present in Beijing, China (중국 아파트 단위주호 평면의 공간 분석 - 1979년~현재 베이징 3침실형 아파트를 중심으로 -)

  • Lian, Shuai;Choi, Jaepil
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.35 no.4
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    • pp.53-60
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    • 2019
  • This study intends to examine the changes found in the unit floor plans of the apartments built in Beijing from 1979 to 2018. For the 3 - bedroom type apartments, 40 unit floor plans were collected, and the changes of integration values of each space were analyzed periodically in four phases. The unit floor plans are analyzed in the context of the Space Syntax Model and compared to the lifestyle and societal changes in China. The results of the study indicate the followings: As time went by, the living room and the dining room were separated from each other with the increasing area of the apartment unit floor plans. The function of the integrated living room was dispersed, and the integration of the living room and the dining room decreased with the change of time. In the third phase, the dining room occupied the center of the unit floor plans with the highest integration value; Chinese people prefer to place the kitchen in the relatively deep place in order to prevent oil and smoke caused by their cooking habits like stir-fry; The privacy of the master bedroom has been strengthened.

Statistical Characteristics of Groundwater Level Time Series at Groundwater Monitoring Wells in Korea (국내 지하수 관측소의 지하수위 시계열자료의 통계적 특성)

  • Hwang, Chan-Ik;Hwang, Tae-Wong;Kim, Gyoo-Bum
    • Proceedings of the Korea Water Resources Association Conference
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    • 2020.06a
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    • pp.287-287
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    • 2020
  • 2016년말 우리나라의 지하수 관측망은 국가지하수관측망, 지역지하수관측망, 수질전용측정망, 해수침투 관측망 등 다양한 목적하에 약 5,790개가 운영되고 있으며, 평균적으로 약 10년 정도의 관측 기간을 보유하고 있다. 이들 중에서 일 1회 이상 자동관측이 이루어지는 679개를 대상으로 지하수위 시계열자료의 특성을 분석하였다. ARIMA 분석 결과, AR(p) 모델은 전체의 56.8%인 386개, MA(q) 모델은 90.7%인 616개, Integration(d) 모델은 96.5%인 655개로 나타났다. AR(p) 모델중 가장 많은 경우를 보인 것은 AR(1), AR(2), AR(3) 등의 순이며, MA(q) 모델중 가장 많은 경우를 보인 것은 MA(2), MA(1), MA(3) 등의 순이며, Integration(d) 모델은 I(1), I(2)의 순으로 나타났다. AR(1) 모델이 가장 많은 것은 강우에 대한 지하수위의 교차상관의 lag time이 1 ~ 2일인 경우가 가장 많으므로 이전 시점의 지하수위에 의하여 현재 지하수위가 결정된다는 점을 의미한다. Integration이 많이 나타난 이유는 주기적 또는 지속적인 변동성이 지하수위에 나타나고 있음을 보여준다. 지하수위의 시계열 특성의 분류 및 그 원인을 평가하여 각 관측소별 지하수위 변동성을 정의함으로써 추후 지하수위 시계열자료의 분석 목적에 부합하는 자료 선별에 기여하고자 한다.

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A Case Study of Rapid AI Service Deployment - Iris Classification System

  • Yonghee LEE
    • Korean Journal of Artificial Intelligence
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    • v.11 no.4
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    • pp.29-34
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    • 2023
  • The flow from developing a machine learning model to deploying it in a production environment suffers challenges. Efficient and reliable deployment is critical for realizing the true value of machine learning models. Bridging this gap between development and publication has become a pivotal concern in the machine learning community. FastAPI, a modern and fast web framework for building APIs with Python, has gained substantial popularity for its speed, ease of use, and asynchronous capabilities. This paper focused on leveraging FastAPI for deploying machine learning models, addressing the potentials associated with integration, scalability, and performance in a production setting. In this work, we explored the seamless integration of machine learning models into FastAPI applications, enabling real-time predictions and showing a possibility of scaling up for a more diverse range of use cases. We discussed the intricacies of integrating popular machine learning frameworks with FastAPI, ensuring smooth interactions between data processing, model inference, and API responses. This study focused on elucidating the integration of machine learning models into production environments using FastAPI, exploring its capabilities, features, and best practices. We delved into the potential of FastAPI in providing a robust and efficient solution for deploying machine learning systems, handling real-time predictions, managing input/output data, and ensuring optimal performance and reliability.

Research of Integrated System Design Process for Concurrency Design Activity (동시적 업무수행을 위한 통합된 시스템 설계 프로세스 연구)

  • Kim Jin-Hoon;Park Young-Won
    • Journal of Korean Society for Quality Management
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    • v.32 no.3
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    • pp.141-152
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    • 2004
  • This study describes process and method to establish concurrent and/or sequential schedule planning for the system design process of the EIA632 standard. For this purpose, the study suggest Process and method that are context analysis of standard process, interface definition from activity decomposition, integration of related activities, and definition of concurrent and/or sequential work flow. The proposed process and method will contribute to minimize time loss that is emerged from activities iteration.

Fractional Integration in the Context of Deterministic Trends

  • Gil-Alana, L.A.
    • Communications for Statistical Applications and Methods
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    • v.11 no.2
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    • pp.313-321
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    • 2004
  • In this article we show that the tests of Robinson (1994) may have serious problems in distinguishing between fractionally integrated processes in the context of deterministic trends. The results are obtained via Monte Carlo experiments. A simple procedure, based on the t-values of the coefficients from the differenced regression, is presented to correctly specify the time series of interest and, an empirical application, using data of the US GNP is also carried out at the end of the article.

Development on intergration of Railroad System for the Trans Asia Railroad(TAR) (대륙횡단 철도시스템 통합 기술개발)

  • 한기흥;이찬우;오일근
    • Proceedings of the KSR Conference
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    • 2000.11a
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    • pp.165-169
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    • 2000
  • A Development on integration of Railroad System and Production of Proto multiple type vehicle, which can run without change of vehicle or Bogie under running conditions of every countries, are needed for the transportation between. Asia and Europe. An integration of Railroad System will benefit not only the transportation costs but also the time drastically, which is very meaningful for the modern international trading.

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comparison of direct Integration methos (직접적분법의 비교)

  • 지현우
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 1999.10a
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    • pp.155-161
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    • 1999
  • Many direct integration methods have been developed for dynamic analysis of structures, In order to compare each other methods and give guideline for selecting a time increment the amplification matrix is constructed according to algorithm of each method and stability and accuracy analysis is done. Four story shear building under external excitations is analyzed by each method and the RMS errors of displacements of top floor and compared with each other.

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