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Effect of Position of Air Supply Opening on the Efficiency of Smoke Extraction in an Underground Long

Hu Longhua,Huo Ran,Li Yuanzhou,Yi Liang,Wang Haobo

Strategic Study of CAE 2005, Volume 7, Issue 5, Pages 90-92

Abstract:

A set of full scale contrast tests, with different relative positions of air supply opening and smokeexhaust opening, were conducted in an 88 m long underground corridor to study the effect of positionof air supply opening on the efficiency of smoke extraction in a long channel.Results showed that the rule for designing the relative positions of air supply openings and smoke exhaustopenings or operating them in a long channel should be “Smoke exhaust near the fire with air supply

Keywords： air supply position smoke extraction efficiency underground long channel full scale test fire

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Air-bearing position optimization based on dynamic characteristics of ultra-precision linear stages

CHEN Xuedong, LI Zhixin

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4, Pages 400-407 doi: 10.1007/s11465-008-0060-z

Abstract: Air-bearings are installed between the stator and the mover of ultra-precision linear stages to suppressof air-bearings.The combined optimization method is used to optimize the air-bearings position.The method can be generalized to the connection position of different components in manufacture elementsand to implement the system dynamic characteristics optimization when the connection position can be

Keywords： manufacture different interaction air-bearings response amplitude

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High pressure air spray assistant power supply control strategies and their effects on diesel engine

HAN Yongqiang, LIU Zhongchang, WANG Zhongshu, ZHU Ruoqun

Frontiers in Energy 2007, Volume 1, Issue 3, Pages 295-299 doi: 10.1007/s11708-007-0042-6

Abstract: engines under transient operations, the real-time controlling and measuring system of a high pressure airspray assistant power supply (HPAS) was developed.Pre-spray (PS) strategy, which means supplying highly pressurized air into the exhaust manifold two secondsbefore the accelerating-graph begins to rise and stopping spraying air when the accelerating-graph stops

Keywords： different after-cooled real-time controlling CSIT supply

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Electrorheological damper for the ultra-precision air bearing stage

ZHU Yu, JIA Songtao, CHEN Yaying, LI Guang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2, Pages 158-163 doi: 10.1007/s11465-008-0031-4

Abstract: illustrates how the electrorheological damper substantially improves the performance of the ultra-precision airMeanwhile, the ultra-precision air bearing stage driven by the linear-motor is characterized by zeroof the electrorheological damper, which takes effect only when the stage is going to decelerate or positionthat by using the advanced sliding mode control method, the characteristics of the ultra-precision air

Keywords： post-yield linear-motor advanced sliding pre-yield position

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Experimental and CFD analysis of nozzle position of subsonic ejector

Xilai ZHANG, Shiping JIN, Suyi HUANG, Guoqing TIAN

Frontiers in Energy 2009, Volume 3, Issue 2, Pages 167-174 doi: 10.1007/s11708-009-0001-5

Abstract: The influence of nozzle position on the performance of an ejector was analyzed qualitatively with freeExperimental investigations and computational fluid dynamics (CFD) analysis of the nozzle position ofThe results show that there is an optimum nozzle position for the ejector.Moreover, the nozzle position of an ejector is not a fixed value, but is influenced greatly by the flow

Keywords： ejector nozzle position ejecting coefficient CFD

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Robust energy-efficient train speed profile optimization in a scenario-based position–time–speed network

Frontiers of Engineering Management 2021, Volume 8, Issue 4, Pages 595-614 doi: 10.1007/s42524-021-0173-1

Abstract: Specifically, we first construct a scenario-based position–time–speed (PTS) network by considering resistance

Keywords： robust train speed profile percentile reliability model scenario-based position–time–speed network

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Strategic position and development prospects of nuclear energy in China

SHEN Wenquan

Frontiers in Energy 2007, Volume 1, Issue 2, Pages 125-128 doi: 10.1007/s11708-007-0015-9

Abstract: By analyzing the challenges of China s energy supply, an excellent perspective of nuclear power development

Keywords： development excellent perspective long-term development comprehensive national

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Analysis of inventory level under procurement constraints in supply chain

CHANG Guangshu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3, Pages 361-363 doi: 10.1007/s11465-007-0063-1

Abstract: Because the inventory is one of the major factors that affect the performance of the supply chain system, efficient reduction of an inventory can effectively reduce the cost level of the total supply chainTherefore, inventory management is an important means to optimize the operation of a supply chain and

Keywords： supply efficient reduction system expectation procurement

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Digital twin-driven smart supply chain

Frontiers of Engineering Management 2022, Volume 9, Issue 1, Pages 56-70 doi: 10.1007/s42524-021-0186-9

Abstract: Today’s supply chain is becoming complex and fragile.Hence, supply chain managers need to create and unlock the value of the smart supply chain.Therefore, we propose creating a DT-driven supply chain (DTSC) as an innovative and integrated solutionfor the smart supply chain.supply chain optimization, and data usage in supply chain collaboration.

Keywords： digital twin supply chain management

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Pricing and production strategies in remanufacturing from the perspectives of supply chain: Review and

Frontiers of Engineering Management doi: 10.1007/s42524-023-0251-7

Abstract: published literature on pricing and production strategies in remanufacturing from four perspectives of supplychain, namely, government policy, consumer characteristics, relationships among firms, and supply chain

Keywords： remanufacturing reverse and closed-loop supply chain circular economy

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Digitalization for supply chain resilience and robustness: The roles of collaboration and formal contracts

Frontiers of Engineering Management Pages 5-19 doi: 10.1007/s42524-022-0229-x

Abstract: Black swan events such as the coronavirus (COVID-19) outbreak cause substantial supply chain disruptionResults show that digitalization has a direct effect on supply chain resilience, and supply chain collaborationbetween digitalization and supply chain robustness.as an organizational factor in managing supply chain disruptions.but weaken the relationship between supply chain collaboration and supply chain resilience.

Keywords： digitalization supply chain resilience robustness collaboration formal contract

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Task-space position/attitude tracking control of FAST fine tuning system

QI Lin, ZHANG Hui, DUAN Guanghong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4, Pages 392-399 doi: 10.1007/s11465-008-0056-8

Abstract: This paper addresses the task-space position/attitude tracking control of a suspended parallel robot,the quaternion algebra, a novel model-independent task-space PD controller that ensures end-effector position

Keywords： telescope five-hundred end-effector controller simulation

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Internet of Things (IoT)–blockchain-enabled pharmaceutical supply chain resilience in the post-pandemic

Frontiers of Engineering Management Pages 82-95 doi: 10.1007/s42524-022-0233-1

Abstract: During the COVID-19 pandemic, the current operating environment of pharmaceutical supply chain (PSC)Although IoT and blockchain have been widely examined in the areas of supply chain and logistics managementThis paper highlights how IoT and blockchain technology can enhance supply chain resilience and provides

Keywords： pharmaceutical supply chain Internet of Things blockchain resilience post-pandemic era

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Disruptive technologies for advancing supply chain resilience

Frontiers of Engineering Management 2023, Volume 10, Issue 2, Pages 360-366 doi: 10.1007/s42524-023-0257-1

Abstract: Disruptive technologies provide a new paradigm for supply chain risk management and bring opportunitiesand challenges for the improvement of supply chain resilience (SCRes).The results show that disruptive technologies can provide the supply chain with flexibility, visibility

Keywords： supply chain resilience disruptive technology supply chain risk

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Balancing resilience and efficiency in supply chains: Roles of disruptive technologies under Industry

Frontiers of Engineering Management Pages 171-176 doi: 10.1007/s42524-022-0247-8

Abstract: analytics, blockchain, Internet-of-Things, and additive manufacturing have become major forces driving supplycircumstances, particular attention should be attached to balancing resilience and efficiency of the supplyIn this study, we first summarize the conflicts between supply chain efficiency and supply chain resilience

Keywords： disruptive technologies supply chain resilience efficiency paradox balance