scholarly journals “Intelligent” Technical Guidelines for Chongqing East Railway Station Building and Supporting Hub Area

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Jingyuan Shi ◽  
Qiuna Li
Keyword(s):  
Life Cycle ◽  
Digital Technology ◽  
Railway Station ◽  
Operation And Maintenance ◽  
Advanced Experience ◽  
Intelligent Management ◽  
And Control ◽  
Whole Life Cycle ◽  
Technical Framework ◽  
At Home

In this paper, by drawing on the advanced experience and norms at home and abroad, the compilation and research of “intelligent technical guidelines” for Chongqing east railway station and its supporting hub area are completed. It includes “digital technology, intelligent construction,” “accurate and flexible, intelligent service,” and “panoramic management and control, intelligent operation, and maintenance,” and has formed the whole life cycle technical framework of “intelligent construction, intelligent service, intelligent management, and operation and maintenance.”

scholarly journals Predication of life cycle cost of equipment base on unbiased grey Markov models

2020 ◽  
Vol 309 ◽  
pp. 05005
Author(s):  
Yonghong Chen ◽  
Ping Hu ◽  
Dong Zhang
Keyword(s):  
Life Cycle ◽  
Markov Model ◽  
Life Cycle Cost ◽  
Prediction Accuracy ◽  
Markov Models ◽  
Grey Model ◽  
Model Accuracy ◽  
Integrated Logistics ◽  
And Control ◽  
Whole Life Cycle

Life cycle cost(LCC) is an important content of equipment integrated logistics support. While the LCC includes the whole life cycle of equipment from development, production, service and maintenance to retirement, in order to effectively manage and control the LCC and better develop integrated logistics support, it is necessary to analyze and predict it. The unbiased grey markov model(UGMM) was introduced into the LCC prediction in the paper, in order to check model accuracy, the posterior difference method(PDM) was used, also the influence by the number of state intervals in UGMM on the prediction accuracy is analyzed and studied. The result indicate that UGMM can be used to predict the LCC, also have the highest prediction accuracy comparing with unbiased grey model and grey separating model, and in order to ensure the prediction accuracy, the state interval should be divided according to the number of sequence.

scholarly journals Research on Environmental Information Disclosure Mechanism and Development Status of Automobile Enterprises in China

2021 ◽  
Vol 257 ◽  
pp. 02020
Author(s):  
Ting Zhang ◽  
Mingnan Zhao ◽  
Shujie Xu
Keyword(s):  
Life Cycle ◽  
Automobile Industry ◽  
Information Disclosure ◽  
Environmental Information ◽  
Development Status ◽  
Environmental Information Disclosure ◽  
Chinese Automobile Industry ◽  
Whole Life Cycle ◽  
At Home ◽  
Information Disclosure System

Firstly analyzed the progress of environmental information disclosure at home and abroad, and elaborated on the shortcomings of environmental information disclosure in China. Secondly, based on foreign information disclosure experience and the actual development of China’s development of the automobile industry, an environmental information disclosure system for the Chinese automobile industry based on the participation of multiple entities is proposed. Finally, by setting indicators for the whole life cycle, the environmental information disclosure of automobile companies is analyzed from different angles.

Remanufacture of Die Casting Dies

2011 ◽  
Vol 121-126 ◽  
pp. 3482-3486
Author(s):  
Chang Rong Chen ◽  
Yan Wang ◽  
Heng An Ou ◽  
Nabil Gindy
Keyword(s):  
Life Cycle ◽  
Arc Welding ◽  
Failure Modes ◽  
Die Casting ◽  
Laser Beam Welding ◽  
Research Attention ◽  
Potential Benefits ◽  
Metal Products ◽  
Whole Life Cycle ◽  
Technical Framework

Die casting dies are essential parts for die casting engineered metal products and usually fail due to a variety of reasons. The objective of this paper is to investigate the potential benefits and possibility of remanufacturing die casting dies. Firstly, with respect to the entire life cycle, a technical framework for die remanufacture is presented. And then based on the failure modes of die casting dies, life extending technologies covering the whole life cycle are reviewed according to the different stages: Pre-failure stage and Post-failure stage. While measurements within the Pre-failure stage are shortly and briefly surveyed, extensive effort is made to survey the recondition technologies-welding technologies which could be the only measure to put worn/failed dies into operation. The most commonly utilized welding technologies are Tungsten Inert Gas (TIG) Welding, Plasma Arc Welding (PAW) and Laser Beam Welding (LBW), and other types of welding techniques including Electro Spark Process and Cold Spray are also applied for repairing die casting dies. Lastly, research gaps and industrial challenges indicate that more research attention is required to finally commercialize the remanufacture of die casting dies.

Intelligent Substation Construction Program and the Whole Life-Cycle Information Platform Technology Research Based on Internet of Things

2013 ◽  
Vol 380-384 ◽  
pp. 2641-2644
Author(s):  
Hong Liang Wang ◽  
Min Cao ◽  
Da Da Wang ◽  
Xing Huang ◽  
Shao Quan Zhang ◽  
...  
Keyword(s):  
Life Cycle ◽  
Internet Of Things ◽  
Power Supply ◽  
The Internet ◽  
Technology Research ◽  
Intelligent Monitoring ◽  
Information Platform ◽  
Intelligent Management ◽  
Whole Life Cycle ◽  
The Internet Of Things

Nowadays, collected datas from existed substation are transported to the power supply bureau layer or YunNan grid layer in this way, it will not only cause the information sharing difficulty, but also make the information uninteroperable. While, intelligent substation construction program base on Internet of Things will greatly improve these problems.This paper gives the intelligent substation overall framework based on the Internet of Things makes a detailed introduction to implementation of technology.Finally, the intelligent substation unified information platform is designed based on the whole life cycle, in order to achieve the system intelligent monitoring, intelligent judgment, intelligent management, intelligent verification and so on. Through the unified information platform and experiment, the method is proved to be effective and feasible.

scholarly journals Digital twins for managing railway maintenance and resilience

2021 ◽  
Vol 1 ◽  
pp. 91
Author(s):  
Sakdirat Kaewunruen ◽  
Jessada Sresakoolchai ◽  
Yi-hsuan Lin
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Life Cycles ◽  
Optimal Time ◽  
Transit System ◽  
Digital Twin ◽  
Operation And Maintenance ◽  
Railway Maintenance ◽  
Whole Life Cycle

Background: To improve railway construction and maintenance, a novel digital twin that helps stakeholders visualize, share data, and monitor the progress and the condition during services is required. Building Information Modelling (BIM) is a digitalization tool, which adopts an interoperable concept that benefits the whole life-cycle assessment (LCA) of the project. BIM’s applications create higher performance on cost efficiency and optimal time schedule, helping to reduce any unexpected consumption and waste over the life cycle of the infrastructure. Methods: The digital twin will be developed using BIM embedded by the lifecycle analysis method. A case study based on Taipei Metro (TM) has been conducted to enhance the performance in operation and maintenance. Life cycles of TM will be assessed and complied with ISO14064. Operation and maintenance activities will be determined from official records provided by TM. Material flows, stocks, and potential risks in the LCA are analyzed using BIM quantification embedded by risk data layer obtained from TM. Greenhouse emission, cost consumption and expenditure will be considered for integration into the BIM. Results: BIM demonstrated strong potential to enable a digital twin for managing railway maintenance and resilience. Based on the case study, a key challenge for BIM in Taiwan is the lack of insights, essential data, and construction standards, and thus the practical adoption of BIM for railway maintenance and resilience management is still in the design phase. Conclusions: This study exhibits a practical paradigm of the digital twin for railway maintenance and resilience improvement. It will assist all stakeholders to engage in the design, construction, and maintenance enhancing the reduction in life cycle cost, energy consumption and carbon footprint. New insight based on the Taipei Mass Rapid Transit system is highly valuable for railway industry globally by increasing the lifecycle sustainability and improving resilience of railway systems.

scholarly journals A BIM-LCA Approach for Estimating the Greenhouse Gas Emissions of Large-Scale Public Buildings: A Case Study

2020 ◽  
Vol 12 (2) ◽  
pp. 685 ◽  
Author(s):  
Baoquan Cheng ◽  
Jingwei Li ◽  
Vivian W. Y. Tam ◽  
Ming Yang ◽  
Dong Chen
Keyword(s):  
Life Cycle ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Large Scale ◽  
Green Building ◽  
Operation And Maintenance ◽  
Building Assessment ◽  
Maintenance Stage ◽  
Whole Life Cycle

Exiting green building assessment standards sometimes cannot work well for large-scale public buildings due to insufficient attention to the operation and maintenance stage. This paper combines the theory of life cycle assessment (LCA) and building information modeling (BIM) technology, thereby proposing a green building assessment method by calculating the greenhouse gas emissions (GGE) of buildings from cradle to grave. Life cycle GGE (LCGGE) can be divided into three parts, including the materialization stage, the operation and maintenance stage, and the demolition stage. Two pieces of BIM software (Revit and Designbuilder) are applied in this study. A museum in Guangdong, China, with a hot summer and warm winter is selected for a case study. The results show that BIM can provide a rich source of needed engineering information for LCA. In addition, the operation and maintenance stage plays the most important role in the GGE reduction of a building throughout the whole life cycle. This research contributes to the knowledge body concerning green buildings and sustainable construction. It helps to achieve the reduction of GGE over the whole life cycle of a building. This is pertinent to contractors, homebuyers, and governments who are constantly seeking ways to achieve a low-carbon economy.

Whole Life Cycle Management of Prefabricated Construction Research Based on BIM Technology

2014 ◽  
Vol 536-537 ◽  
pp. 1705-1708 ◽  
Author(s):  
Bao Ku Qi ◽  
Chang Fu Li
Keyword(s):  
Life Cycle ◽  
Construction Management ◽  
Life Cycle Management ◽  
Technology Application ◽  
Advantages And Disadvantages ◽  
Operation And Maintenance ◽  
Design Production ◽  
Whole Life Cycle ◽  
Prefabricated Building

Now prefabricated construction become the focus of the research, this paper summarizes the advantages and disadvantages of prefabricated construction, and points out the problems exposed by the prefabricated building in management. The BIM technology is introduced into the whole life cycle of prefabricated construction, detailed elaborated the BIM technology application in the whole life cycle of prefabricated construction management. The analysis results show that BIM technology has vast application prospect in the whole life cycle of prefabricated construction management throughout the design, production, construction, and operation and maintenance aspects.

Life-cycle and control of Poa trivialis L. in wheat fields in Kagawa prefecture.

2010 ◽  
Vol 55 (4) ◽  
pp. 263-267
Author(s):  
Kiwamu Fujita ◽  
Yoshihiro Murakami ◽  
Takenori Miyashita
Keyword(s):  
Life Cycle ◽  
Poa Trivialis ◽  
And Control
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