Results 51 to 60 of about 218,098 (212)

Indicador de infraestructuras productivas por entidad federativa en México, 1970-2003 [PDF]

open access: yes, 2009
El objetivo de este trabajo es llevar a cabo la cuantificación de un indicador de infraestructuras en unidades físicas, que engloba las principales categorías (transportes, telecomunicaciones, abastecimiento de agua, energía eléctrica y drenaje ...
ALVAREZ AYUSO, INMACULADA   +7 more
core  

Infraestructuras ferroviarias

open access: yes, 2010
En los últimos treinta años, los servicios interurbanos de viajeros del ferrocarril europeo han adquirido un nuevo protagonismo con la construcción de nuevas infraestructuras y la implementación de servicios de alta velocidad. Gracias a ello, se ha avanzado en el conocimiento de los diversos ámbitos que configuran elferrocarril como modo de transporte.
openaire   +3 more sources

Radiation Effects in Electret Organic Thin‐Film Transistors Due to High Flux and High Dose X‐Ray Irradiation

open access: yesAdvanced Materials, Volume 38, Issue 8, 6 February 2026.
Electret‐style organic thin‐film transistors are evaluated for synchrotron X‐ray dosimetry at ultra‐high dose rates, showing promising performance and agreement with standard detectors. XPS and NEXAFS reveal radiation‐induced oxidation and Fermi level shifts in pentacene and polystyrene, correlating with reduced charge carrier mobility and providing ...
Alexandria Mitchell   +12 more
wiley   +1 more source

La contribución del turismo al desarrollo integral de las sociedades receptoras. Aspectos teórico-metodológicos La contribución del turismo al desarrollo integral de las sociedades receptoras. Aspectos teórico-metodológicos

open access: yesPolítica y Sociedad, 2005
Measuring quality in tourism requests to study not just tourists’ satisfaction with different services —total quality— but tourism’s contribution to sustainable and integral development in host societies.
Antón Álvarez Sousa*
doaj  

WABAD: A world annotated bird acoustic dataset for passive acoustic monitoring

open access: yesEcology, Volume 107, Issue 2, February 2026.
Abstract Under the current global biodiversity crisis, there is a need for automated and noninvasive monitoring techniques that can gather large amounts of data cost‐effectively at various ecological scales, from local to large spatial scales. These data can then be analyzed to inform stakeholders and decision‐makers.
Cristian Pérez‐Granados   +101 more
wiley   +1 more source

Infraestructuras y mapas [PDF]

open access: yes, 2007
El área comercial y financiera conocida como A.Z.C.A., situada sobre el Paseo de la Castellana entre las calles Raimundo Fernández Villaverde y General Perón en Madrid, nos sirve como laboratorio real en el que contrastar las ideas. El A.Z.C.A.
Rojo-de-Castro, L. (Luis)
core   +1 more source

The Role of Public Finance to Address the Global Finance Gap for Drinking Water Services

open access: yesWorld Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT Meeting SDG target 6.1 for drinking water requires addressing the finance gap between the funds available from tariffs, taxes and transfers, and the life‐cycle costs of sustaining these services. While there are li‐mitations to applying repayable finance to address this gap, governments can be well suited to support both drinking water ...
Kristina Nilsson
wiley   +1 more source

Risks of Time and Chronology as an Underpinning Infrastructure for Critical Systems: Emerging Chronorisks and Chronosecurity Needs

open access: yesJournal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.
ABSTRACT Time and chronology form the invisible architecture upon which modern civilization depends, governing synchronization across markets, power grids, communication networks, transportation, and defense. Yet, this shared temporal framework, engineered through atomic clocks, satellites, and digital synchronization, faces growing vulnerabilities ...
Bilal M. Ayyub
wiley   +1 more source

Convergencia intermunicipal de las manufacturas en Sonora: El rol de la inversión estatal

open access: yesFrontera Norte, 2010
Después de valorar la creciente importancia de la industrialización en Sonora, en este trabajo se investiga si durante 1993-2003 sus municipios tendieron hacia una mayor o menor diferenciación de su valor agregado manufacturero, y si dicho patrón ha ...
Luis Ortiz Ávalos, Wilfrido Ruiz Ochoa
doaj  

Characterizing the Optimal Composition of Government Expenditures [PDF]

open access: yes
This paper extends the neoclassical growth model with productive public capital by including an infrastructure efficiency index, which is assumed to depend on a public choice variable, in particular, the share of public spending allocated to productive ...
Rafaela Mª Pérez Sánchez
core  

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