Results 21 to 30 of about 2,225,711 (233)

COSTO DE CAPITAL Y RENTABILIDAD EN EMPRESAS DE TRANSPORTE TERRESTRE DE PASAJEROS

open access: yes, 2018
Objective: To determine the incidence of the weighted average cost of capital in the profitability of the companies of interprovincial transport of passengers by road in buses in a five-year period 2012 - 2016.
Valiente Pantaleón Ramírez Huerta
semanticscholar   +1 more source

Autostrade del Mare: non è solo una questione di acqua

open access: yesTeMA: Journal of Land Use, Mobility and Environment, 2009
Le Autostrade del Mare (AdM) si pongono come alternativa al trasporto terrestre di merci nel tentativo di decongestionare la rete viaria. Il programma “Autostrade del Mare” è previsto nel Piano Generale dei Trasporti approvato dal ...
Rosa Anna La Rocca
doaj   +1 more source

El transporte público terrestre y la accesibilidad, instrumentos para el análisis funcional del sistema de asentamientos: el caso de Ecuador

open access: yes, 2017
Long-distance public passenger transport by road is one of the principal means for the articulation of the settlements. In Ecuador, public transport is of massive use for long-distance travel and how routes are disponibles, the centers which interconnect,
M. Córdoba
semanticscholar   +1 more source

Modélisation Magnétohydrodynamique [PDF]

open access: yesarXiv, 2021
To better understand the occurrence and evolution of ionospheric perturbations, the CEA develops CLOVIS, a physical code that describes the dynamics of neutrals and ionized particles in the Earth's magnetic field. CLOVIS solved the hydrodynamic equations (Euler's equations) and magnetohydrodynamic equations using the Godunov finite volume method with ...
arxiv  

Map-compatible decomposition of transport paths [PDF]

open access: yesarXiv, 2023
In the Monge-Kantorovich transport problem, the transport cost is expressed in terms of transport maps or transport plans, which play crucial roles there. A variant of the Monge-Kantorovich problem is the ramified (branching) transport problem that models branching transport systems via transport paths.
arxiv  

Ensuring Transport Security; Features of Legal Regulation [PDF]

open access: yesarXiv, 2021
The article analyzes the legal framework regulating the legal provision of transport security in Russia. Special attention is paid to the role of prosecutor's supervision in the field of prevention of crimes in transport.
arxiv  

Thomas-Fermi Calculations of Atoms and Matter in Magnetic Neutron Stars II: Finite Temperature Effects [PDF]

open access: yes, 1997
We present numerical calculations of the equation of state for dense matter in high magnetic fields, using a temperature dependent Thomas-Fermi theory with a magnetic field that takes all Landau levels into account. Free energies for atoms and matter are also calculated as well as profiles of the electron density as a function of distance from the ...
arxiv   +1 more source

Exemple de distribution de la manière organique au quaternaire : sondage CNR VE-I,Venise Example of Organic Matter Distribution in the Quaternay: Cnr Ve-I Borehole, Venice

open access: yesOil & Gas Science and Technology, 2006
La matière organique des argiles du sondage CNR VE-1 a été étudiée par pyrolyse. Ce puit est carotté d'une manière presque continue jusqu'à 950 m. La teneur en carbone organique et les paramètres mesurés par pyrolyse ont été comparés avec l'environnement
Favero V.   +3 more
doaj   +1 more source

Global drivers of the conservation–invasion paradox

open access: yesConservation Biology, EarlyView.
Abstract The conservation–invasion paradox (CIP) refers to a long‐term phenomenon wherein species threatened in their native range can sustain viable populations when introduced to other regions. Understanding the drivers of CIP is helpful for conserving threatened species and managing invasive species, which is unfortunately still lacking. We compiled
Yanhua Hong, Zhiyong Yuan, Xuan Liu
wiley   +1 more source

Effects of land cover and protected areas on flying insect diversity

open access: yesConservation Biology, EarlyView.
Abstract Widespread insect losses are a critical global problem. Mitigating this problem requires identifying the principal drivers across different taxa and determining which insects are covered by protected areas. However, doing so is hindered by missing information on most species owing to extremely high insect diversity and difficulties in ...
James S. Sinclair   +27 more
wiley   +1 more source

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