Results 11 to 20 of about 4,161 (142)
Review and comparison of shearography and active thermography for nondestructive evaluation [PDF]
, 2009 postprin
Chen, YS +7 more
core +1 more source
Automatic Segment Compensation Alignment Control Algorithm Based on Rail Head Wear
机车电传动, 2021 RSU (roller search unit) automatic alignment system which is based on laser profile measurement theory ensures that the RSU is always above the center of the rail, so that the ultrasonic can scan the rail normally and ensuring normal flaw detection.
Wenxing WANG +4 more
doaj
DEDICATED MULTIPROCESSOR SYSTEM FOR AUTOMATIC RAIL FLAW DETECTION [PDF]
, 1988 An automatized ultrasonic rail flaw detection system has been developed for real-time rail flaw detection and evaluation. The whole system installed on a testing vehicle, working under rough environmental conditions must determine the internal ...
ABONYI, Zs., DOBROWIECKI, T., TÓTH, K.
core +1 more source
Forward-Looking Echoic Flow for Guidance of an Unmanned Aerial System [PDF]
, 2020 Echoic flow is a formula derived from natural phenomena that has the potential to control vehicles with great efficiency using range information. Initially studied in bats, echoic flow allows animals to use sonar as a navigation tool.
Steven, James
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Business Strategy and the Environment, EarlyView.ABSTRACT The concept of predictive maintenance in advanced manufacturing systems is crucial from the point of view of resource efficiency in the era of high competitiveness forced by energy transformation in the digital economy. Against the backdrop of sustainability and the opportunities a data cooperative offers, the combination of predictive ...
Christian Schachtner +6 more
wiley +1 more source
Carbon emission assessment of tunnel infrastructures: From construction to operation
Deep Underground Science and Engineering, EarlyView.This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long +4 more
wiley +1 more source
Environmental Policy and Governance, EarlyView.ABSTRACT The growing complexity and severity of cross‐border climate risks characterised by non‐linear impact chains and deep uncertainty questions the capacity of environmental governance to tackle these problems effectively and in a just manner. To increase the efficiency of climate action, the private sector has been called upon to leverage market ...
Päivi Tikkakoski, Sirkku Juhola
wiley +1 more source
Review of Catenary Icing on High‐Speed Railways: Characteristics, Impact and Countermeasures
High Voltage, EarlyView.ABSTRACT The pantograph–catenary system (PCS) is the only path for electrified railway trains to acquire energy. Catenary icing during winter is a common natural phenomenon, which usually leads to the deterioration of the current quality and severely affects the operational safety of trains.
Zheng Li +7 more
wiley +1 more source
The Leaner, Meaner State—And What It Means for Society
Sociology Lens, EarlyView.ABSTRACT Populism is an old phenomenon but one which appears to once again be in ascendance globally. Attributing a nation's problems to a wicked elite, populists seek to dismantle the old order and either remove or repurpose its institutions. This paper explores how populism changes economic governance and particularly, how its emphasis on fighting ...
Christopher A. Hartwell
wiley +1 more source
Travel Demand Growth: Research on Longer-Term Issues. The Potential Contribution of Trip Planning Systems [PDF]
, 1990 INTRODUCTION 1.1 The growth in demand for travel Over the 20 years hm 1965, National Travel Survey (NTS) data shows a 61% growth in total person - km of travel.
Hopkinson, P.G., May, A.D.
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