نتایج جستجو برای: spatial models

تعداد نتایج: 1220734  

1997
Helen Wright Paul Taylor

A method is introduced for using hidden Markov models (HMMs) to model intonational structure. HMMs are probabilistic and can capture the variability in structure which previous finite state network models lack. We show how intonational tunes can be modelled by separate HMMs and how HMMs can be used in a recognition system to automatically determine the tune type of an utterance.

G.R. Jalali-Naini, J. Sadjadi, N. Hamidi Fard , R. Sadeghian,

  In this paper Semi-Markov models are used to forecast the triple dimensions of next earthquake occurrences. Each earthquake can be investigated in three dimensions including temporal, spatial and magnitude. Semi-Markov models can be used for earthquake forecasting in each arbitrary area and each area can be divided into several zones. In Semi-Markov models each zone can be considered as a sta...

پایان نامه :0 1392

nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...

Analysis probative spatial data method for checking patterns spatial accidental and accidental is distribution variables spatial and correlation spatial from more usage and more important tools Analysis for is the research in the case spatial data. The aim in research, is evaluation operation methods find inside in distribution spatial land use city Kerman. That on base of methods find inside k...

2015
Nathalie Villa-Vialaneix Anne Ruiz-Gazen

We greatly appreciate the opportunity to read and discuss the paper “Visualizing statistical models: removing the blindfold” [42]. The article manages to close the gap between statistics and visualization by combining advanced methods from both fields to visualize statistical models and methods. The article provides a very nice overview of visualization tools for statistical models, which can b...

2015
Anna Melbinger Massimo Vergassola

One essential ingredient of evolutionary theory is the concept of fitness as a measure for a species’ success in its living conditions. Here, we quantify the effect of environmental fluctuations onto fitness by analytical calculations on a general evolutionary model and by studying corresponding individualbased microscopic models. We demonstrate that not only larger growth rates and viabilities...

Journal: :تحقیقات جغرافیایی 0
مهدی عزیزی دانشگاه ازاد ابهر کرامت اله زیاری دانشکده جغرافیا دانشگاه تهران

abstract this study is an attempt to investigate functions of abhar city as a medium sized city in zanjan province spatial development structure. the method of this study is descriptive-analytical. some quantity models and methods are used in study of the role of this city and its hinterland. the economical models represent that, this city has basic conditions in the second and third economical...

Journal: :Environmental management 2008
Kendra Spence Cheruvelil Patricia A Soranno Mary T Bremigan Tyler Wagner Sherry L Martin

Regionalization frameworks cluster geographic data to create contiguous regions of similar climate, geology and hydrology by delineating land into discrete regions, such as ecoregions or watersheds, often at several spatial scales. Although most regionalization schemes were not originally designed for aquatic ecosystem classification or management, they are often used for such purposes, with su...

2016
Francesca Pannullo Duncan Lee Eugene Waclawski Alastair H. Leyland

The long-term impact of air pollution on human health can be estimated from small-area ecological studies in which the health outcome is regressed against air pollution concentrations and other covariates, such as socio-economic deprivation. Socio-economic deprivation is multi-factorial and difficult to measure, and includes aspects of income, education, and housing as well as others. However, ...

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    Urban planning has gone from the past to the present day to a greater extent based on physical factors, to the extent that the basis of urban planning plans and urban plans influenced urban development and physical spaces. It's The city is the product of complex economic and social relations and its spatial heterogeneity reflects the processes of widespread socio-economic-cultural-social ...

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