Comparing Urban Citizenship, Sanctuary Cities, Local Bureaucratic Membership, and Regularizations

The Politics of Refuge: Sanctuary Cities, Crime, and Undocumented Immigration

This paper assesses the claim that sanctuary cities – defined as cities that expressly forbid city officials or police departments from inquiring into immigration status – are associated with post-hoc increases in crime. We employ a causal inference matching strategy to compare similarly situated cities where key variables are the same across the cities except the sanctuary status of the city. ...

Social Citizenship and Urban Poverty

The increased visibility of concentrated urban poverty has posed a variety of intellectual and policy challenges in the past decade. The spread of joblessness and economic disinvestment has left many urban neighborhoods in ruins. Fears about the culture and family life of the poor have motivated a variety of responses, including the recent “welfare reform” effort that ended the federal governme...

Urban Landscapes and Sustainable Cities

Ecological research targeting sustainable urban landscapes needs to include findings and methods from many lines of ecological research, such as the link between biodiversity and ecosystem function, the role of humans in ecosystems, landscape connectivity, and resilience. This paper reviews and highlights the importance of these issues for sustainable use of ecosystem services, which is argued ...

Urban Development and Central – Local Governance Relationships in Two Ukrainian Cities: Kiev and Odessa by

Newton Regularizations For Impedance Tomography: Convergence By Local Injectivity

In [Inverse Problems 22(2006), pp. 1967-1987] we demonstrated experimentally that the Newton-like regularization method CG-REGINN is a competitive solver for the inverse problem of the complete electrode model in 2D-electrical impedance tomography. Here we establish rigorously the observed convergence of CG-REGINN (and related schemes). To this end we prove that the underlying nonlinear operato...