Estimation of immigration rate using integrated population models
نویسندگان
چکیده
منابع مشابه
Estimation of Runoff using Modified SCS Models
In recent decades, due to the importance of watershed management programs and the need for adequate information and correct estimation of rainfall and runoff, many conceptual models have been proposed. These models have parameters that must be estimated according to observational data. However, finding the optimal values for the parameters of simulation models has always faced uncertainty. One ...
متن کاملEffects of immigration on the dynamics of simple population models.
Many simple population models exhibit the period doubling route to chaos as a single parameter, commonly the growth rate, is increased. Here we examine the effect of an immigration process on such models and explain why in the case of one-dimensional ("single-humped") maps, immigration often tends to suppress chaos and stabilise equilibrium behaviour or cyclical oscillations of long period. The...
متن کاملEstimation of Count Data using Bivariate Negative Binomial Regression Models
Abstract Negative binomial regression model (NBR) is a popular approach for modeling overdispersed count data with covariates. Several parameterizations have been performed for NBR, and the two well-known models, negative binomial-1 regression model (NBR-1) and negative binomial-2 regression model (NBR-2), have been applied. Another parameterization of NBR is negative binomial-P regression mode...
متن کاملExperimental Evaluation of Algorithmic Effort Estimation Models using Projects Clustering
One of the most important aspects of software project management is the estimation of cost and time required for running information system. Therefore, software managers try to carry estimation based on behavior, properties, and project restrictions. Software cost estimation refers to the process of development requirement prediction of software system. Various kinds of effort estimation patter...
متن کاملThe Natural Rate of Immigration
There are large differences in immigration (per capita) levels among rich OECD countries. In addition these differences are unrelated to the respective levels of income per capita and display a large persistence over time. Existing economic theories of immigration cannot explain these facts. This paper presents a dynamic political-economy model of immigration where agents choose an immigration ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Ecology
سال: 2010
ISSN: 0021-8901,1365-2664
DOI: 10.1111/j.1365-2664.2010.01789.x