Results 81 to 90 of about 234,122 (303)

Axiomatic approach to the multicriteria structural optimization

open access: yesComputer Assisted Methods in Engineering and Science, 2023
The paper presents the axiomatic approach [or solving the multicriteria optimization of thin-walled structure such as vertical cylindrical reservoirs subject to pitting corrosion.
Yuriy M. Pochtman   +2 more
doaj  

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu   +6 more
wiley   +1 more source

Formation of the stress-strain state of rail bars during welding with preliminary vertical bending

open access: yesMATEC Web of Conferences, 2018
The article defines the parameters and working conditions for the final restoration of the integrity of the rail beams of a continuous gauge rail by electrocontact welding, as well as when welding rails with each other when they are elongated in the ...
Shramenko Volodymyr   +4 more
doaj   +1 more source

Railway transport services in the age of globalization [PDF]

open access: yes
The fall of the Berlin Wall confirmed the victory of the capitalist system over the communist system. The emergence and evolution of globalization have already produced significant changes in the world economy.
Shinji Nauru, Sorin George Toma
core   +1 more source

Node and Place, a study on the spatial process of railway terminus area redevelopment in central London [PDF]

open access: yes, 2003
Bertolini and Spit (1998) have argued that any significant transport node should ideally also be a significant place in the city. However, this rarely seems to be the case, and the resolution of this disparity, which they refer to as the 'node-place ...
Paksukcharern Thammaruangsri, K.
core  

Experimental study on burning rate and flame geometry in construction tunnel fires under high geothermal conditions

open access: yesDeep Underground Science and Engineering, EarlyView.
Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei   +6 more
wiley   +1 more source

RIGIDITY OF INTERMEDIATE FASTENING SCREWS AND SPIKES FOR WOODEN SLEEPERS UNDER THE ACTION OF HORIZONTAL LATERAL FORCES

open access: yesNauka ta progres transportu, 2016
Purpose. Despite the steady increase in the length of sections of continuous welded rail on concrete sleepers, wooden railway sleepers, as one of the options of under-rail bearings, are still operated on a sufficiently large number of areas, in ...
O. M. Darenskiy   +3 more
doaj   +1 more source

LIBERALIZAREA TRANSPORTULUI PE CALEA FERATA IN UNIUNEA EUROPEANA [PDF]

open access: yes
The International Economic Community, represented by the International Chamber of Commerce, has emphasized the increasing role of the transport sector in trade in economic development.
Ilie BUDICA
core  

Лібералізація ринку залізничних перевезень: світовий досвід та реалії України (за матеріалами наукового повідомлення на засіданні Президії НАН України 5 липня 2017 р.) [PDF]

open access: yes, 2017
Розглянуто актуальність, специфіку та наслідки політики лібералізації для залізничного транспорту. Розкрито світовий досвід та європейські концепції лібералізації ринку залізничних перевезень, наведено оцінку варіативності запровадження політики ...
Никифорук, О.І.
core   +1 more source

Disruption Management in Passenger Railway Transportation [PDF]

open access: yes, 2009
This paper deals with disruption management in passenger railway transportation. In the disruption management process, many actors belonging to different organizations play a role. In this paper we therefore describe the process itself and the roles of the different actors.
Jespersen-Groth, J.   +6 more
openaire   +3 more sources

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