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119 risultati trovati.

Tipi di risorsa: Libro cartaceo Libro elettronico Articolo Rivista Tesi Capitolo
Ricerca accademica
Spatial Diversity Effect on the Experimental Gain of Capacity of the Outdoor Mobile Radio Channel in the 700 MHz Band
Articolo
Articolo
Spatial Diversity Effect on the Experimental Gain of Capacity of the Outdoor Mobile Radio Channel in the 700 MHz Band
P. A. Pinna et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract From measurements performed in the 700 MHz band, this paper analyzes the effect of spatial diversity on the channel capacity through the propagation of an OFDM mobile radio signal and compares with the results o...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma Inglés
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SPATIAL DIVERSITY OF POVERTY IN POLAND
Articolo
Articolo
SPATIAL DIVERSITY OF POVERTY IN POLAND
Paweł Ulman et al · Lodz University Press · 2014 · ISSN 0208-6018
Studies on poverty have a long tradition. In Poland, the issue acquired special significance with the beginning of the economic transition. Additionally, Poland’s accession to the European Union, particularly the need ...
LCC LCC:Marketing. Distribution of products; TENDOkZpbmFuY2U~Idioma Inglés
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Polarization spatial diversity and multiplexing MIMO surface enabled by graphene for terahertz communications
Articolo
Articolo
Polarization spatial diversity and multiplexing MIMO surface enabled by graphene for terahertz communications
Huang Jianzhou et al · Wiley · 2025 · ISSN 2192-8614
The terahertz (THz) frequency band has abundant spectrum resources, which is suitable for constructing communication systems with ultra-high data rates and extremely low latency. Multiple input multiple output (MIMO) dev...
LCC TENDOlBoeXNpY3M~Idioma Inglés
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The Worldwide Spatial Diversity in Population Ageing
Articolo
Articolo
The Worldwide Spatial Diversity in Population Ageing
Anna Janiszewska · Lodz University Press · 2017 · ISSN 0208-6018
The ageing of populations is a currently global process which occurs in almost all regions of the world, although it is uneven in different countries. Doubtlessly, the changes in demographic behaviours observed at presen...
LCC LCC:Marketing. Distribution of products; TENDOkZpbmFuY2U~Idioma Inglés
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The Spatial Diversity of the Social Housing Stock in the Voivodship Capital Cities of Poland
Articolo
Articolo
The Spatial Diversity of the Social Housing Stock in the Voivodship Capital Cities of Poland
Magdalena Załęczna et al · Lodz University Press · 2019 · ISSN 0208-6018
The Polish municipalities are obliged to act directly in the housing market by satisfying the housing needs of people who cannot do it themselves due to their financial or personal situation. Social flats are used for th...
LCC LCC:Marketing. Distribution of products; TENDOkZpbmFuY2U~Idioma Inglés
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DIVERSITY OF LIFE VALUES OF POLES – SPATIAL AND DYNAMIC RECOGNITION
Articolo
Articolo
DIVERSITY OF LIFE VALUES OF POLES – SPATIAL AND DYNAMIC RECOGNITION
Tomasz Szubert · Lodz University Press · 2014 · ISSN 0208-6018
The study concerned the diversity of life values espoused by contemporary Poles. The analysis was performed in spatial terms (division of the country into districts) and in time (years 2000-2013). The main purpose of the...
LCC LCC:Marketing. Distribution of products; TENDOkZpbmFuY2U~Idioma Inglés
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Optimizing crop diversity across multiple spatial scales
Articolo
Articolo
Optimizing crop diversity across multiple spatial scales
T.P.M. van Loon et al · Elsevier · 2026 · ISSN 2665-9727
Increasing crop diversity in agricultural landscapes can increase biodiversity but it is unclear how different diversification strategies affect crop diversity across spatial scales. Here we compared different diversific...
LCC TENDOkVudmlyb25tZW50YWwgc2NpZW5jZXM~Idioma Inglés
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Experimental Evaluation of the Mobile Radio Channel Capacity in the 2.48 GHz Band
Articolo
Articolo
Experimental Evaluation of the Mobile Radio Channel Capacity in the 2.48 GHz Band
Uwe R. Villanueva et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · ISSN 2179-1074
Abstract This paper deals with the effect of the Single-Input Multiple-Output spatial diversity on the OFDM mobile radio signal propagating in an urban channel. From measurements performed in Rio de Janeiro city, Brazil,...
LCC LCC:Electrical engineering. Electronics. Nuclear engineeringIdioma Inglés
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Propagation stability in optical fibers: role of path memory and angular momentum
Articolo
Articolo
Propagation stability in optical fibers: role of path memory and angular momentum
Ma Zelin et al · Wiley · 2020 · ISSN 2192-8606
With growing interest in the spatial dimension of light, multimode fibers, which support eigenmodes with unique spatial and polarization attributes, have experienced resurgent attention. Exploiting this spatial diversity...
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User cooperation diversity-part I: system description
Articolo
Articolo
User cooperation diversity-part I: system description
A. Sendonaris; Elza Erkip; Behnaam Aazhang · IEEE Transactions on Communications · 2003
Mobile users' data rate and quality of service are limited by the fact that, within the duration of any given call, they experience severe variations in signal attenuation, thereby necessitating the use of some type of d...
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Diversity, distribution and priority conservation areas for Annonaceae in Mexico
Articolo
Articolo
Diversity, distribution and priority conservation areas for Annonaceae in Mexico
Leopoldo Hurtado-Reveles et al · Sociedad Botánica de México, A. C · 2026 · ISSN 2007-4298
Annonaceae is a pantropical plant family that is an important component in Neotropical forests, yet its diversity, distribution and conservation status in Mexico has not been comprehensively synthesized. This study provi...
LCC TENDOkJvdGFueQ~~Idioma Inglés
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Spatial differences in vegetation damage under typhoon hazards: A case study of a coastal urban district
Articolo
Articolo
Spatial differences in vegetation damage under typhoon hazards: A case study of a coastal urban district
Xinyue Zhang et al · Elsevier · 2026 · ISSN 2665-9727
Coastal urban ecosystems are becoming increasingly vulnerable to climate-induced disturbance and damage due to the escalating frequency and intensity of typhoons. This study employed an integrated approach of remote sens...
LCC TENDOkVudmlyb25tZW50YWwgc2NpZW5jZXM~Idioma Inglés
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Spatial distribution of medusae (Cnidaria) assemblages in the southern Gulf of Mexico (dry season)
Articolo
Articolo
Spatial distribution of medusae (Cnidaria) assemblages in the southern Gulf of Mexico (dry season)
Puente Tapia, Francisco Alejandro et al · Akadémiai Kiadó · 2022 · ISSN 1585-8553
The present study described the spatial patterns of the medusae assemblages in the southern Gulf of Mexico during the dry season of 2016 (May–June). The assemblages, defined based on Bray–Curtis similarity index, wer...
Idioma Inglés
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Spatial patterns in phage-Rhizobium coevolutionary interactions across regions of common bean domestication
Articolo
Articolo
Spatial patterns in phage-Rhizobium coevolutionary interactions across regions of common bean domestication
Van Cauwenberghe, Jannick et al · Nature Publishing Group · 2021 · ISSN 2092-2106
Bacteriophages play significant roles in the composition, diversity, and evolution of bacterial communities. Despite their importance, it remains unclear how phage diversity and phage-host interactions are spatially stru...
Idioma Inglés
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Demographic history and spatial genetic structure in a remnant population of the subtropical tree Anadenanthera colubrina var. cebil (Griseb.) Altschul (Fabaceae)
Articolo
Articolo
Demographic history and spatial genetic structure in a remnant population of the subtropical tree Anadenanthera colubrina var. cebil (Griseb.) Altschul (Fabaceae)
Goncalves, Alejandra Lorena et al · EDP Sciences · 2019 · ISSN 1286-4560
A remnant population ofAnadenanthera colubrinavar.cebilin Northern Argentina showed a mixed mating system, high genetic diversity, and moderate spatial genetic structure, which was stronger in saplings than in adults. De...
Idioma Inglés
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CAMBIOS MULTIANUALES Y ESPACIALES DE LA COMPOSICIÓN Y ESTRUCTURA DEL ENSAMBLE DE INSECTOS ACUÁTICOS EN LAS QUEBRADAS PERENNES DE LA ISLA GORGONA, COLOMBIA MULTI-ANNUAL AND SPATIAL CHANGES IN COMPOSITION AND STRUCTURE OF AQUATIC INSECTS ASSEMBLE AT PERENNIAL STREAMS OF GORGONA ISLAND, COLOMBIA
Articolo
Articolo
CAMBIOS MULTIANUALES Y ESPACIALES DE LA COMPOSICIÓN Y ESTRUCTURA DEL ENSAMBLE DE INSECTOS ACUÁTICOS EN LAS QUEBRADAS PERENNES DE LA ISLA GORGONA, COLOMBIA MULTI-ANNUAL AND SPATIAL CHANGES IN COMPOSITION AND STRUCTURE OF AQUATIC INSECTS ASSEMBLE AT PERENNIAL STREAMS OF GORGONA ISLAND, COLOMBIA
Magnolia C. Longo-Sánchez et al · Universidad de Antioquia · 2009 · ISSN 0304-3584
Este estudio presenta un análisis del cambio multi-anual de los años 1986, 1993 y 2008, de la composición y estructura del ensamble de insectos acuáticos en cinco quebradas en las vertientes Este (Ilú, Iguapoga y Pi...
LCC LCC:Biology (General)Idioma Inglés
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Composição e diversidade florístico-estrutural de um hectare de floresta densa de terra firme na Amazônia Central, Amazonas, Brasil Composition and floristic-structural diversity of a hectare of terra firme dense forest in Central Amazonia, Amazonas, Brazil
Articolo
Articolo
Composição e diversidade florístico-estrutural de um hectare de floresta densa de terra firme na Amazônia Central, Amazonas, Brasil Composition and floristic-structural diversity of a hectare of terra firme dense forest in Central Amazonia, Amazonas, Brazil
Arlem Nascimento de Oliveira et al · Instituto Nacional de Pesquisas da Amazônia · 2008 · ISSN 0044-5967
Foram inventariadas todas as árvores, lianas e palmeiras com DAP > 10 cm de um hectare (dois transectos paralelos de 500 x 10 m) de floresta densa de terra firme sobre platô de Latossolo, 90 km a nordeste de Manaus (02...
LCC LCC:Science (General)Idioma Inglés
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Elucidating the Structural Relationships of In-Between Spatial Systems in Relation to Presence Quality: A Multi-Layer Perceptual–Spatial Configuration Approach (Case Study: Qeysarieh District, Isfahan Bazaar)
Articolo
Articolo
Elucidating the Structural Relationships of In-Between Spatial Systems in Relation to Presence Quality: A Multi-Layer Perceptual–Spatial Configuration Approach (Case Study: Qeysarieh District, Isfahan Bazaar)
Ehsan Zarei et al · Islamic Azad University, Shiraz Branch · 2025 · ISSN 3092-6785
This research examines the role of in-between spatial systems in enhancing presence quality, taking the Qeysarieh precinct of the Isfahan Bazaar one of the principal connectors between Naqsh-e Jahan Square and the histor...
LCC LCC:Geography. Anthropology. RecreationIdioma Inglés
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Genetic diversity in rosewood saplings (Aniba rosaeodora ducke, Lauraceae): an ecological approach Diversidade genética em plantas jovens de Pau-rosa (Aniba rosaeodora Ducke, Lauraceae): uma abordagem ecológica
Articolo
Articolo
Genetic diversity in rosewood saplings (Aniba rosaeodora ducke, Lauraceae): an ecological approach Diversidade genética em plantas jovens de Pau-rosa (Aniba rosaeodora Ducke, Lauraceae): uma abordagem ecológica
Ronaldo Pereira Santos et al · Instituto Nacional de Pesquisas da Amazônia · 2008 · ISSN 0044-5967
This article takes an ecological approach to the genetic diversity of Rosewood (Aniba rosaeodora Ducke) in a central Amazonian terra firme forest north of Manaus. Planted Rosewood setting, under partial shaded canopy, we...
LCC LCC:Science (General)Idioma Inglés
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High genotypic diversity of the reef-building coral Porites lobata(Scleractinia: Poritidae) in Isla del Coco National Park, Costa Rica
Articolo
Articolo
High genotypic diversity of the reef-building coral Porites lobata(Scleractinia: Poritidae) in Isla del Coco National Park, Costa Rica
Boulay, Jennifer N. et al · Universidad de Costa Rica · 2025 · ISSN 0034-7744
The isolated Isla del Coco experiences periodic, extreme disturbances which devastate coral reefs surrounding the island. Scleractinian corals build the physical structure of the reef therefore ecosystem recovery relies ...
Idioma Inglés
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Spectral characterization of plant diversity in a biodiversity‐enriched oil palm plantation
Articolo
Articolo
Spectral characterization of plant diversity in a biodiversity‐enriched oil palm plantation
Vannesa Montoya‐Sánchez et al · Wiley · 2026 · ISSN 2056-3485
Abstract Assessing plant diversity using remote sensing, including airborne imaging spectroscopy, shows promise for large‐scale biodiversity monitoring in landscape restoration and conservation. Enriching plantations w...
LCC TENDOlRlY2hub2xvZ3k~; TENDOkVjb2xvZ3k~Idioma Inglés
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THE ATTRACTIVENESS OF LOCAL LABOUR MARKETS AND THE DIVERSITY OF DEVELOPMENT LEVELS - THE CASE OF WEST POMERANIA REGION
Articolo
Articolo
THE ATTRACTIVENESS OF LOCAL LABOUR MARKETS AND THE DIVERSITY OF DEVELOPMENT LEVELS - THE CASE OF WEST POMERANIA REGION
Elżbieta Julia Chądzyńska · Lodz University Press · 2014 · ISSN 0208-6018
Modern research methods of economic development of regions and cities pay special attention to the position of the units in the area expressed by geographical position, the distance between the tested individuals and nei...
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The role of frugivory in plant diversity maintenance - a simulation approach
Articolo
Articolo
The role of frugivory in plant diversity maintenance - a simulation approach
Morán López, Teresa et al · Wiley Blackwell Publishing, Inc · 2018 · ISSN 0906-7590
Frugivores may play a key role in plant species coexistence by equalizing the species’ representation in the seed rain. Rare species may benefit from enhanced dispersal if frugivores prefer locally scarce fruits, or if...
Idioma Inglés
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Unraveling fish diversity and assembly patterns by eDNA metabarcoding in a highly dynamic freshwater ecosystem with diverse rare and endemic fish species
Articolo
Articolo
Unraveling fish diversity and assembly patterns by eDNA metabarcoding in a highly dynamic freshwater ecosystem with diverse rare and endemic fish species
Li Wang et al · Elsevier · 2026 · ISSN 2665-9727
Fish diversity is often challenging due to its labor-intensive and time-consuming, particularly when it comes to detecting rare and endemic fishes in fast-flowing waters. Environmental DNA metabarcoding has emerged as a ...
LCC TENDOkVudmlyb25tZW50YWwgc2NpZW5jZXM~Idioma Inglés
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