Bifurcations in a human migration model of Scheurle-Seydel type-II: Rotating waves

In this paper, we develop a bi-level human migration model using the concept of conjectural variations equilibrium (CVE). In contrast to previous works, here we construct a bi-level programming model. The upper level agents are municipalities of competing locations, whose strategies are investments into infrastructures of the locations (cities, towns, etc.). These investments aim at making the locations more attractive for both the residents and potential migrants from other locations. At the lower level of the model, the present residents (grouped into professional communities) are also considered as potential migrants to other locations. They make their decision where to migrate (if at all) comparing the expected values of the utility functions of the destinations and original locations, which are estimated by taking into account their group's conjectures concerning equilibrium migration flows between the involved locations. Applying a special technique to verify the consistency of the conjectures (influence coefficients), the existence and uniqueness results for the consistent conjectural variations equilibrium (CCVE) are established.

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ON STRUCTURED BAYESIAN POISSON-GAMMA MODEL FOR HUMAN MIGRATION MODEL

Far East Journal of Mathematical Sciences (FJMS) ◽

10.17654/ms103010095 ◽

2018 ◽

Vol 103 (1) ◽

pp. 95-112

Author(s):

Preatin ◽

N. Iriawan ◽

I. Zain ◽

W. Hartanto

Keyword(s):

Human Migration ◽

Gamma Model ◽

Migration Model

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Consistent conjectural variations equilibrium in a human migration model

2015 International Conference on Industrial Engineering and Operations Management (IEOM) ◽

10.1109/ieom.2015.7093772 ◽

2015 ◽

Author(s):

Vyacheslav Kalashnikov ◽

Felipe J. Castillo-Perez ◽

Aaron Arevalo-Franco ◽

Nataliya Kalashnykova

Keyword(s):

Human Migration ◽

Migration Model ◽

Conjectural Variations ◽

Conjectural Variations Equilibrium

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Un modelo de migración humana: experimentos numéricos basados sobre los datos de las tres ciudades laguneras / A Model of Human Migration: Numerical Experiments Based on the Data of Three Lake Cities

Estudios Demográficos y Urbanos ◽

10.24201/edu.v22i3.1278 ◽

2007 ◽

Vol 22 (3) ◽

pp. 731 ◽

Cited By ~ 4

Author(s):

Vyacheslav Kalashnikov ◽

Nataliya Kalaschnikova ◽

Ramón Luévanos Rojas ◽

Mario Méndez Muños ◽

César Uranga ◽

...

Keyword(s):

Numerical Experiments ◽

Strong Influence ◽

Utility Functions ◽

Human Migration ◽

Migration Activity ◽

Migration Model ◽

Different Types ◽

Conjectural Variations ◽

Conjectural Variations Equilibrium

Se aplica un modelo de migración humana al estudio de crecimiento de población en las tres ciudades aglomeradas en la región Lagunera de México. Se introducen tres tipos de funciones de utilidad para distintos grupos de población, y se investiga un equilibrio con variaciones conjeturales. Los experimentos numéricos basados en datos de las tres ciudades muestran la fuerte influencia de los coeficientes de variaciones conjeturales sobre la actividad migratoria esperada.AbstractWe extend a human migration model and apply it to study the growth of population in three agglomerated cities in the Laguna region in Mexico. Three different types of utility functions for various groups of population are proposed, and conjectural variations equilibrium is investigated. Numerical experiments demonstrate the strong influence of conjectural coefficients upon the expected migration activity.

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Human migration: Model of a migration channel with a secondary and a tertiary arm

10.1063/1.5091324 ◽

2019 ◽

Cited By ~ 2

Author(s):

Roumen Borisov ◽

Nikolay K. Vitanov

Keyword(s):

Human Migration ◽

Migration Model

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Type II Solar Radio Bursts over Solar Cycle 21

International Astronomical Union Colloquium ◽

10.1017/s025292110002546x ◽

1994 ◽

Vol 144 ◽

pp. 283-284

Author(s):

G. Maris ◽

E. Tifrea

Keyword(s):

Solar Radio ◽

Interplanetary Space ◽

Impulsive Phase ◽

Radio Bursts ◽

Type Ii ◽

Solar Radio Bursts ◽

Strong Energy ◽

Mass Ejection ◽

Geophysical Effect ◽

Radio Event

The type II solar radio bursts produced by a shock wave passing through the solar corona are one of the most frequently studied solar activity phenomena. The scientific interest in this type of phenomenon is due to the fact that the presence of this radio event in a solar flare is an almost certain indicator of a future geophysical effect. The origin of the shock waves which produce these bursts is not at all simple; besides the shocks which are generated as a result of a strong energy release during the impulsive phase of a flare, there are also the shocks generated by a coronal mass ejection or the shocks which appear in the interplanetary space due to the supplementary acceleration of the solar particles.

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Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100067522 ◽

1970 ◽

Vol 28 ◽

pp. 106-107 ◽

Cited By ~ 1

Author(s):

Ronald S. Weinstein ◽

N. Scott McNutt

Keyword(s):

New Zealand ◽

General Hospital ◽

Massachusetts General Hospital ◽

Type I ◽

Type Ii ◽

Collaborative Effort ◽

Temperature And Pressure ◽

The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

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