scholarly journals Depth functions of powers of homogeneous ideals

2020 ◽  
pp. 1 ◽  
Author(s):  
Huy Tài Hà ◽  
Hop Nguyen ◽  
Ngo Viet Trung ◽  
Tran Nam Trung
Keyword(s):  
Depth Functions ◽  
Homogeneous Ideals

scholarly journals Depth functions of symbolic powers of homogeneous ideals

2019 ◽  
Vol 218 (3) ◽  
pp. 779-827 ◽  
Author(s):  
Hop Dang Nguyen ◽  
Ngo Viet Trung
Keyword(s):  
Depth Functions ◽  
Symbolic Powers ◽  
Homogeneous Ideals

scholarly journals Correction to: Depth functions of symbolic powers of homogeneous ideals

2019 ◽  
Vol 218 (3) ◽  
pp. 829-831
Author(s):  
Hop Dang Nguyen ◽  
Ngo Viet Trung
Keyword(s):  
Depth Functions ◽  
Symbolic Powers ◽  
Homogeneous Ideals

scholarly journals Neural Rate and Timing Cues for Detection and Discrimination of Amplitude-Modulated Tones in the Awake Rabbit Inferior Colliculus

2007 ◽  
Vol 97 (1) ◽  
pp. 522-539 ◽  
Author(s):  
Paul C. Nelson ◽  
Laurel H. Carney
Keyword(s):  
Inferior Colliculus ◽  
Dynamic Range ◽  
Modulation Depth ◽  
Average Rate ◽  
Modulation Frequency ◽  
Detection Threshold ◽  
Depth Functions ◽  
Depth Discrimination ◽  
High Modulation ◽  
Envelope Processing

Neural responses to amplitude-modulated (AM) tones in the unanesthetized rabbit inferior colliculus (IC) were studied in an effort to establish explicit relationships between physiological and psychophysical measures of temporal envelope processing. Specifically, responses to variations in modulation depth ( m) at the cell’s best modulation frequency, with and without modulation maskers, were quantified in terms of average rate and synchronization to the envelope over the entire perceptual dynamic range of depths. Statistically significant variations in the metrics were used to define neural AM detection and discrimination thresholds. Synchrony emerged at modulation depths comparable with psychophysical AM detection sensitivities in some neurons, whereas the lowest rate-based neural thresholds could not account for psychoacoustical thresholds. The majority of rate thresholds (85%) were −10 dB or higher (in 20 log m), and 16% of the population exhibited no systematic dependence of average rate on m. Neural thresholds for AM detection did not decrease systematically at higher SPLs (as observed psychophysically): thresholds remained constant or increased with level for most cells tested at multiple sound-pressure levels (SPLs). At depths higher than the rate-based detection threshold, some rate modulation-depth functions were sufficiently steep with respect to the across-trial variability of the rate to predict depth discrimination thresholds as low as 1 dB (comparable with the psychophysics). Synchrony, on the other hand, did not vary systematically with m in many cells at high modulation depths. A simple computational model was extended to reproduce several features of the modulation frequency and depth dependence of both transient and sustained pure-tone responders.

Measuring and Modelling Soil Depth Functions

2016 ◽  
pp. 225-240 ◽  
Author(s):  
Budiman Minasny ◽  
Uta Stockmann ◽  
Alfred E. Hartemink ◽  
Alex B. McBratney
Keyword(s):  
Soil Depth ◽  
Depth Functions

*-Almost Super-Homogeneous Ideals in *-H-Local Domains

2021 ◽  
Author(s):  
Shiqi Xing ◽  
D. D. Anderson ◽  
Muhammad Zafrullah
Keyword(s):  
Homogeneous Ideals

scholarly journals FORAMINIFERA CHECK LIST AND THE MAIN SPECIES DISTRIBUTION IN THE AVEIRO LAGOON AND ADJACENT CONTINENTAL SHELF (PORTUGAL)

2019 ◽  
Vol 4 (1) ◽  
pp. 1-52 ◽  
Author(s):  
Maria Virgínia Alves Martins ◽  
Johann Hohenegger ◽  
Fabrizio Frontalini ◽  
Cristina Sequeira ◽  
Paulo Miranda ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Distribution Patterns ◽  
Check List ◽  
Outer Continental Shelf ◽  
Depth Functions ◽  
Main Species ◽  
Components Analysis ◽  
Foraminíferos Bentónicos ◽  
Aveiro Lagoon ◽  
Upper Slope

This work is based on a compilation of benthic foraminiferal data collected in the Aveiro Lagoon and in the adjacent continental shelf and upper slope (center of Portugal). It intends to provide an overall analysis from transitional to the outer continental shelf of the occurrence and distribution of species in living and to present updated taxonomic data and illustrations of most of the species found in the in the Aveiro Lagoon and in the adjacent continental shelf including in total assemblages. Cluster analysis (CA) and Principal Components Analysis (PCA) interpreted as depth functions allow us to identify the main species in different ecoenvironments and sectors of the study area. The most unusual living assemblage was documented in the lagoon inlet under very strong tidal currents activity, composed mostly by the following species (both in living and total assemblages): Rotaliammina concava, Lepidodeuterammina ochracea, Quinqueloculina seminula, Gavelinopsis praegeri, Paratrochammina haynesi, Remaneica helgolandica and Remaneicella gonzalezi. The distribution patterns of some Trochamminidae and Remaneicidae species whose ecology and distribution pattern are poorly known, have proved to be a marker of more or less hydrodynamic and stable/unstable environments in coastal and transitional marine environments. OCORRÊNCIA DE FORAMINÍFEROS E DISTRIBUIÇÃO DAS PRINCIPAIS ESPÉCIES NA LAGOA DE AVEIRO E NA PLATAFORMA CONTINENTAL ADJACENTE (PORTUGAL)ResumoEste trabalho baseia-se numa compilação de dados foraminíferos bentónicos recolhidos na Laguna de Aveiro e na plataforma continental adjacente (centro de Portugal). Pretende efetuar uma análise geral da distribuição de espécies nas associações vivas e totais (vivas e mortas) na área de estudo, em função da profundidade. Pretende ainda apresentar dados taxonómicos e ilustrações da maioria das espécies encontradas na Laguna de Aveiro e na plataforma continental adjacente. A análise de agrupamento (CA) e a análise de componentes principais (PCA), em função da profundidade, permitem identificar as principais espécies em diferentes ecossistemas e setores da área de estudo. A associação viva mais invulgar foi encontrada na embocadura da Laguna de Aveiro, um ambiente sujeito a forte corrente de maré. Essa associação era composta principalmente pelas seguintes espécies (na associação viva e total): Rotaliammina concava, Lepidodeuterammina ochracea, Quinqueloculina seminula, Gavelinopsis praegeri, Paratrochammina haynesi, Remaneica helgolandica and Remaneicella gonzalezi. Os padrões de distribuição de algumas espécies de Trochamminidae e Remaneicidae, cuja ecologia e padrão de distribuição são pouco conhecidos, mostraram ser um marcador de ambientes mais ou menos hidrodinâmicos e de estabilidade/instabilidade do substrato em ambientes marinhos costeiros e de transição. Palavras-chave: Ecologia. Taxonomia. Imagens digitais. Análise Estatística. Ambientes Transicionais e Costeiros Marinhos.

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