Results 141 to 150 of about 657,080 (262)

Rail privatisation in Britain - lessons for the rail freight industry [PDF]

open access: yes, 2004
Until 1994, the rail industry in Britain – as in most of Europe – was organised in the form of a single integrated state owned company providing passenger and freight services, and the infrastructure on which they ran, throughout the country.
Fowkes, A.S., Nash, C.A.
core  

Perovskite‐based time‐domain signal‐balancing LiDAR sensor with centimeter depth resolution

open access: yesInfoMat, EarlyView.
In this study, we present a monolithic high‐speed perovskite‐based photodetector capable of directly sensing the time delay between two light pulses with a temporal resolution of at least 170 ps. This outstanding time resolution is achieved through a signal‐balancing detection scheme that effectively overcomes the limitations of conventional ...
Gebhard J. Matt   +10 more
wiley   +1 more source

The technological model of operating area by the combined transport [PDF]

open access: yes, 2009
The contribution deals with design technology service model using the combined transport. It assesses the performance indicators in relation to price and quality of services provided and on this basis decides on the type of the transport.
Cempírek, Václav   +2 more
core   +1 more source

Two Problems for the Political Inclusion of Animals

open access: yesJournal of Applied Philosophy, EarlyView.
ABSTRACT In recent years, the field of animal ethics has taken a political turn, with scholars arguing that sentient nonhuman animals should be included in the political sphere. This article explores two key challenges arising from this turn towards the political inclusion of animals: the Conflict Problem and the Numbers Problem.
David Paaske, Angela K. Martin
wiley   +1 more source

Residual service stresses on tread of P65 rail

open access: yesВестник Научно-исследовательского института железнодорожного транспорта
Introduction. The problems of rail durability and methods of forecasting it in conditions of increasing traffic density continue to be relevant. High stresses occur in the area of contact between the wheel and the rail, caused by the efforts of their ...
V. I. Sakalo, A. V. Sakalo
doaj  

Exploring production of social and economic value in social enterprises through a business model framework

open access: yesStrategic Change, EarlyView.
Abstract This study explores how social enterprises create social and economic value through business models that support ex‐offenders. The work was motivated by a request for help from an entrepreneur wishing to establish a business that supports ex‐offender rehabilitation.
Elizabeth Green   +2 more
wiley   +1 more source

Sensitivity‐Tunable Complex Permittivity Sensing Enabled by Bound States in the Continuum in a Waveguide‐Resonator System

open access: yesLaser &Photonics Reviews, EarlyView.
This work introduces two types of bound states in the continuum (BICs) and their merging in a waveguide‐resonator system, which significantly enhances the quality factor (Q$Q$). Benefiting from the high‐Q$Q$ characteristics of quasi‐BICs, a sensitivity‐tunable complex permittivity sensor is developed based on this system, achieving improvements of 93 ...
Yuhang Yang   +7 more
wiley   +1 more source

The Full Cost of High-Speed Rail: An Engineering Approach [PDF]

open access: yes
This paper examines the full costs, defined as the sum of private and social costs, of a high speed rail system proposed for a corridor connecting Los Angeles and San Francisco in California.
Adib Kanafani   +3 more
core  

Recent Developments in Sustainable Composites for Printed Circuit Boards (PCBs): A Review

open access: yesMacromolecular Materials and Engineering, EarlyView.
This review presents the potential of using natural plant fibers and biodegradable polymers as sustainable printed circuit boards (PCBs). This review provides future directions in innovation and sustainable PCBs development. Bio‐composites PCBs are both environmentally friendly and sustainable due to the natural fibres they contain.
Erdem Selver   +7 more
wiley   +1 more source

Strong‐Gradient Diffusion‐Weighted Imaging of Prostate Cancer Using an Inside‐Out Nonlinear Gradient Coil

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To demonstrate improved image quality and lesion conspicuity in prostate diffusion‐weighted imaging (DWI) using an inside‐out nonlinear gradient coil that provides locally strong gradients (200–500 500 mT/m) at typical prostate positions.
Horace Z. Zhang   +8 more
wiley   +1 more source

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