Loading

Error: Cannot Load Popup Box

Hit List

Title:

Parameter spaces for stationary DGPs in spatial econometric modelling

Description:

Unlike the time series literature the spatial econometric literature has not really dealt with the issue of the parameter space. This paper shows that current parameter space concepts for spatial econometric DGPs are inadequate. It proves that the parameter space proposed by Kelejian and Prucha 2008 can result in nonstationary DGPs, while the pa...

Unlike the time series literature the spatial econometric literature has not really dealt with the issue of the parameter space. This paper shows that current parameter space concepts for spatial econometric DGPs are inadequate. It proves that the parameter space proposed by Kelejian and Prucha 2008 can result in nonstationary DGPs, while the parameter space proposed by Lee and Liu 2010 can be too restrictive in applied cases. Furthermore it is discussed that the practice of row standardizing lacks a mathematical foundation. Due to these problems concerning the current parameter space consepts, this paper provides a new deâ€¦nition for the spatial econometric parameter space. It is able to show which assumptions are necessary to give row standardizing the needed mathematical foundation. Finally two additional applications for the new parameter space deâ€¦nition concerning models with group interaction and panels with fixed cross section sample size are provided. Both applications result in parameter spaces that are substantially larger than the ones the literature would so far considered to be stationary. Minimize

Document Type:

preprint

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Title:

Agent Teams and Evolutionary Computation: Optimizing Semi- Parametric Spatial Autoregressive Models

Description:

Classical spatial autoregressive models share the same weakness as the classical linear regression models, namely it is not possible to estimate non-linear relationships between the dependent and independent variables. In the case of classical linear regression a semi-parametric approach can be used to address this issue. Therefore an advanced s...

Classical spatial autoregressive models share the same weakness as the classical linear regression models, namely it is not possible to estimate non-linear relationships between the dependent and independent variables. In the case of classical linear regression a semi-parametric approach can be used to address this issue. Therefore an advanced semi- parametric modelling approach for spatial autoregressive models is introduced. Advanced semi-parametric modelling requires determining the best configuration of independent variable vectors, number of spline-knots and their positions. To solve this combinatorial optimization problem an asynchronous multi-agent system based on genetic-algorithms is utilized. Three teams of agents work each on a subset of the problem and cooperate through sharing their most optimal solutions. Through this system more complex relationships between the dependent and independent variables can be derived. These could be better suited for the possibly non-linear real-world problems faced by applied spatial econometricians. Minimize

Document Type:

preprint

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Title:

rac-1-(2-Aminocarbonyl-2-bromoethyl)pyridinium bromide

Author:

Description:

In the crystal structure of the title compound, C8H10BrN2O+·Br−, intermolecular N—H.Br hydrogen bonds link the molecules into infinite chains along [001]. The inclined angle between the pyridine ring plane and the plane defined by the acid amide group is 63.97 (4)°.

In the crystal structure of the title compound, C8H10BrN2O+·Br−, intermolecular N—H.Br hydrogen bonds link the molecules into infinite chains along [001]. The inclined angle between the pyridine ring plane and the plane defined by the acid amide group is 63.97 (4)°. Minimize

Publisher:

International Union of Crystallography

Year of Publication:

2012-06-01T00:00:00Z

Document Type:

article

Language:

English

Subjects:

LCC:Chemistry ; LCC:QD1-999 ; LCC:Science ; LCC:Q ; DOAJ:Chemistry (General) ; DOAJ:Chemistry

LCC:Chemistry ; LCC:QD1-999 ; LCC:Science ; LCC:Q ; DOAJ:Chemistry (General) ; DOAJ:Chemistry Minimize

Rights:

CC by

CC by Minimize

Relations:

http://scripts.iucr.org/cgi-bin/paper?S1600536812019721

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Title:

rac-2,3-Dibromopropionamide

Author:

Description:

The racemic title compound, C3H5Br2NO, was crystallized from methanol. In the crystal, adjacent molecules are linked through N—H.O hydrogen bonds, forming chains along the c-axis direction. These chains are linked through N—H.O hydrogen bonds, forming an undulating two-dimensional network lying parallel to the bc plane. There are also short Br.B...

The racemic title compound, C3H5Br2NO, was crystallized from methanol. In the crystal, adjacent molecules are linked through N—H.O hydrogen bonds, forming chains along the c-axis direction. These chains are linked through N—H.O hydrogen bonds, forming an undulating two-dimensional network lying parallel to the bc plane. There are also short Br.Br contacts present [3.514 (3) Å]. Minimize

Publisher:

International Union of Crystallography

Year of Publication:

2013-02-01T00:00:00Z

Document Type:

article

Language:

English

Subjects:

LCC:Chemistry ; LCC:QD1-999 ; LCC:Science ; LCC:Q ; DOAJ:Chemistry (General) ; DOAJ:Chemistry ; LCC:Chemistry ; LCC:QD1-999 ; LCC:Science ; LCC:Q ; DOAJ:Chemistry (General) ; DOAJ:Chemistry ; LCC:Chemistry ; LCC:QD1-999 ; LCC:Science ; LCC:Q

LCC:Chemistry ; LCC:QD1-999 ; LCC:Science ; LCC:Q ; DOAJ:Chemistry (General) ; DOAJ:Chemistry ; LCC:Chemistry ; LCC:QD1-999 ; LCC:Science ; LCC:Q ; DOAJ:Chemistry (General) ; DOAJ:Chemistry ; LCC:Chemistry ; LCC:QD1-999 ; LCC:Science ; LCC:Q Minimize

Rights:

CC by

CC by Minimize

Relations:

http://scripts.iucr.org/cgi-bin/paper?S160053681205132X

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Title:

Time series and spatial interaction: An alternative method to detect converging clusters

Author:

Description:

In this paper an attempt is made to assess the hypothesis of re- gional club-convergence, using a spatial panel analysis combined with B-Splines. In this context, a â€˜convergence-clubâ€™ is conceived as a group of regions that in the long-run move towards steady-state equilib- rium, approximated in terms of the average per-capita income. Using ...

In this paper an attempt is made to assess the hypothesis of re- gional club-convergence, using a spatial panel analysis combined with B-Splines. In this context, a â€˜convergence-clubâ€™ is conceived as a group of regions that in the long-run move towards steady-state equilib- rium, approximated in terms of the average per-capita income. Using data for the US states over the period 1929-2005, a pattern of club- convergence is detected. The â€™clusterâ€™ of converging states is rather limited and a strong spatial component is detected. Minimize

Document Type:

preprint

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Title:

Agent Teams and Evolutionary Computation: Optimizing Semi- Parametric Spatial Autoregressive Models

Description:

Abstract — Classical spatial autoregressive models share the same weakness as the classical linear regression models, namely it is not possible to estimate non-linear relationships between the dependent and independent variables. In the case of classical linear regression a semi-parametric approach can be used to address this issue. Therefore an...

Abstract — Classical spatial autoregressive models share the same weakness as the classical linear regression models, namely it is not possible to estimate non-linear relationships between the dependent and independent variables. In the case of classical linear regression a semi-parametric approach can be used to address this issue. Therefore an advanced semiparametric modelling approach for spatial autoregressive models is introduced. Advanced semi-parametric modelling requires determining the best configuration of independent variable vectors, number of spline-knots and their positions. To solve this combinatorial optimization problem an asynchronous multi-agent system based on genetic-algorithms is utilized. Three teams of agents work each on a subset of the problem and cooperate through sharing their most optimal solutions. Through this system more complex relationships between the dependent and independent variables can be derived. These could be better suited for the possibly non-linear real-world problems faced by applied spatial econometricians. I. Minimize

Contributors:

The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2013-08-17

Source:

http://www-sre.wu.ac.at/ersa/ersaconfs/ersa11/e110830aFinal01687.pdf

http://www-sre.wu.ac.at/ersa/ersaconfs/ersa11/e110830aFinal01687.pdf Minimize

Document Type:

text

Language:

en

DDC:

006 Special computer methods *(computed)*

Rights:

Metadata may be used without restrictions as long as the oai identifier remains attached to it.

Metadata may be used without restrictions as long as the oai identifier remains attached to it. Minimize

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Title:

Approved by

Description:

Interim Reports on work of the International Institute for Applied Systems Analysis receive only limited review. Views or opinions expressed herein do not necessarily represent those of the

Interim Reports on work of the International Institute for Applied Systems Analysis receive only limited review. Views or opinions expressed herein do not necessarily represent those of the Minimize

Contributors:

The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2011-10-28

Source:

http://www.iiasa.ac.at/Publications/Documents/IR-00-004.pdf

http://www.iiasa.ac.at/Publications/Documents/IR-00-004.pdf Minimize

Document Type:

text

Language:

en

Rights:

Metadata may be used without restrictions as long as the oai identifier remains attached to it.

Metadata may be used without restrictions as long as the oai identifier remains attached to it. Minimize

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Title:

Enumeration of generalized polyominoes

Author:

Description:

As a generalization of polyominoes we consider edge-to-edge connected nonoverlapping unions of regular k-gons. For n ≤ 4 we determine formulas for the number ak(n) of generalized polyominoes consisting of n regular k-gons. Additionally we give a table of the numbers ak(n) for small k and n obtained by computer enumeration. We finish with some op...

As a generalization of polyominoes we consider edge-to-edge connected nonoverlapping unions of regular k-gons. For n ≤ 4 we determine formulas for the number ak(n) of generalized polyominoes consisting of n regular k-gons. Additionally we give a table of the numbers ak(n) for small k and n obtained by computer enumeration. We finish with some open problems for k-polyominoes. 1 Minimize

Contributors:

The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2008-07-17

Source:

http://www.wm.uni-bayreuth.de/fileadmin/Sascha/Publikationen/generalized_polyominoes.pdf

http://www.wm.uni-bayreuth.de/fileadmin/Sascha/Publikationen/generalized_polyominoes.pdf Minimize

Document Type:

text

Language:

en

Rights:

Metadata may be used without restrictions as long as the oai identifier remains attached to it.

Metadata may be used without restrictions as long as the oai identifier remains attached to it. Minimize

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Title:

Enumeration of generalized polyominoes

Author:

Description:

As a generalization of polyominoes we consider edge-to-edge connected nonoverlapping unions of regular k-gons. For n ≤ 4 we determine formulas for the number ak(n) of generalized polyominoes consisting of n regular k-gons. Additionally we give a table of the numbers ak(n) for small k and n obtained by computer enumeration. We finish with some op...

As a generalization of polyominoes we consider edge-to-edge connected nonoverlapping unions of regular k-gons. For n ≤ 4 we determine formulas for the number ak(n) of generalized polyominoes consisting of n regular k-gons. Additionally we give a table of the numbers ak(n) for small k and n obtained by computer enumeration. We finish with some open problems for k-polyominoes. 1 Minimize

Contributors:

The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2012-11-14

Source:

http://arxiv.org/pdf/math/0605144v1.pdf

http://arxiv.org/pdf/math/0605144v1.pdf Minimize

Document Type:

text

Language:

en

Rights:

Metadata may be used without restrictions as long as the oai identifier remains attached to it.

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Title:

(Matthias Koch)

Description:

Investigations on halobacterial transducers with respect to membrane potential sensing and adaptive methylation Dissertation zur Erlangung des Doktorgrades der Fakultät für Chemie und Pharmazie

Investigations on halobacterial transducers with respect to membrane potential sensing and adaptive methylation Dissertation zur Erlangung des Doktorgrades der Fakultät für Chemie und Pharmazie Minimize

Contributors:

The Pennsylvania State University CiteSeerX Archives

Year of Publication:

2012-06-21

Source:

http://edoc.ub.uni-muenchen.de/4954/1/Koch_Matthias_K.pdf

http://edoc.ub.uni-muenchen.de/4954/1/Koch_Matthias_K.pdf Minimize

Document Type:

text

Language:

en

Rights:

Metadata may be used without restrictions as long as the oai identifier remains attached to it.

URL:

Content Provider:

My Lists:

My Tags:

Notes:

Currently in BASE: 69,696,404 Documents of 3,363 Content Sources

http://www.base-search.net