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Kinds of Of Chicago Selected AbstractsMetropolitan Open-Space Protection with Uncertain Site AvailabilityCONSERVATION BIOLOGY, Issue 2 2005ROBERT G. HAIGHT acceso público; Chicago; modelo de selección de sitio; optimización; representación de especies Abstract:,Urban planners acquire open space to protect natural areas and provide public access to recreation opportunities. Because of limited budgets and dynamic land markets, acquisitions take place sequentially depending on available funds and sites. To address these planning features, we formulated a two-period site selection model with two objectives: maximize the expected number of species represented in protected sites and maximize the expected number of people with access to protected sites. These objectives were both maximized subject to an upper bound on area protected over two periods. The trade-off between species representation and public access was generated by the weighting method of multiobjective programming. Uncertainty was represented with a set of probabilistic scenarios of site availability in a linear-integer formulation. We used data for 27 rare species in 31 candidate sites in western Lake County, near the city of Chicago, to illustrate the model. Each trade-off curve had a concave shape in which species representation dropped at an increasing rate as public accessibility increased, with the trade-off being smaller at higher levels of the area budget. Several sites were included in optimal solutions regardless of objective function weights, and these core sites had high species richness and public access per unit area. The area protected in period one depended on current site availability and on the probabilities of sites being undeveloped and available in the second period. Although the numerical results are specific for our study, the methodology is general and applicable elsewhere. Resumen:,Planificadores urbanos adquieren espacios abiertos para proteger áreas naturales y proporcionar acceso público a oportunidades de recreación. Debido a presupuestos limitados y a la dinámica de los mercados de terrenos, las adquisiciones se llevan a cabo secuencialmente en función de la disponibilidad de fondos y sitios. Para atender estas características de la planificación, formulamos un modelo de selección de sitios de dos períodos con dos objetivos: maximizar el número esperado de especies representado en sitios protegidos y maximizar el número esperado de personas con acceso a sitios protegidos. Ambos objetivos fueron maximizados con un límite superior en la superficie protegida en los dos períodos. El balance entre la representación de especies y el acceso público fue generado por el método de ponderación de programación de multiobjetivos. La incertidumbre fue representada con un conjunto de escenarios probabilísticos de la disponibilidad de sitios en una formulación lineal-integral. Para demostrar el modelo, utilizamos datos para 27 especies raras en 31 sitios potenciales en el oeste del Condado Lake, cerca de la ciudad de Chicago. Cada curva tenía forma cóncava y la representación de especies descendió a medida que incrementó la accesibilidad pública, con un menor equilibrio en niveles altos del presupuesto para el área. Varios sitios fueron incluidos en soluciones óptimas independientemente de las funciones de ponderación de los objetivos, y estos sitios tuvieron alta riqueza de especies y acceso público por unidad de área. La superficie protegida en el período uno dependió de la disponibilidad de sitios y de las probabilidades de que los sitios no fueran desarrollados y de su disponibilidad en el segundo período. Aunque los resultados numéricos son específicos a nuestro estudio, la metodología es general y aplicable en otros sitios. [source] Economic Interdependence Within the Chicago Metropolitan Area: A Miyazawa AnalysisJOURNAL OF REGIONAL SCIENCE, Issue 2 2001Geoffrey J.D. Hewings The present study explores the nature and strength of economic interdependence between inner-city communities and suburbs within the Chicago metropolitan area. Employing Miyazawa's extended input-output framework, a multiregional model is used to investigate the interdependence of income formation and output generation. The metropolitan area is divided into four regions and particular attention is directed to predominantly minority areas on the south and west sides of the city of Chicago. The region-to-region impacts of trade flows and their associated multipliers proved to be far less important in determining the strength of interregional interdependence in contrast to income flows derived from journey-to-work movements. The interrelational income multiplier revealed considerable interdependence between regions although the strength of this interdependence was asymmetric. [source] Promoting Infant Health Through Home Visiting By a Nurse-Managed Community Worker TeamPUBLIC HEALTH NURSING, Issue 4 2001Cynthia Barnes-Boyd R.N., Ph.D. This article describes the Resources, Education and Care in the Home program (REACH-Futures), an infant mortality reduction initiative in the inner city of Chicago built on the World Health Organization (WHO) primary health care model and over a decade of experience administering programs to reduce infant mortality through home visits. The program uses a nurse-managed team, which includes community residents selected, trained, and integrated as health advocates. Service participants were predominately African American families. All participants were low-income and resided in inner-city neighborhoods with high unemployment, high teen birth rates, violent crime, and deteriorated neighborhoods. Outcomes for the first 666 participants are compared to a previous home-visiting program that used only nurses. Participant retention rates were equivalent overall and significantly higher in the first months of the REACH-Futures program. There were two infant deaths during the course of the study, a lower death rate than the previous program or the city. Infant health problems and developmental levels were equivalent to the prior program and significantly more infants were fully immunized at 12 months. The authors conclude that the use of community workers as a part of the home-visiting team is as effective as the nurse-only team in meeting the needs of families at high risk of poor infant outcomes. This approach is of national interest because of its potential to achieve the desired outcomes in a cost-effective manner. [source] If You Promise to Build It, Will They Come?REAL ESTATE ECONOMICS, Issue 2 2009The Interaction between Local Economic Development Policy, the Real Estate Market: Evidence from Tax Increment Finance Districts The analysis in this article examines the impacts of one of the more prominent economic development tools, tax increment financing (TIF) districts, on the local commercial real estate market. The study area is the city of Chicago, a community with a long history of reliance on TIF districts as a means to foster local development initiatives. A treatment effects model is used to address the selection bias often attributed to studies of public policy impacts on real estate markets. The results indicate that commercial properties located within designated TIF districts exhibit higher rates of appreciation after the area is designated a qualifying TIF district. [source] A Flexible Fourier Approach to Repeat Sales Price IndexesREAL ESTATE ECONOMICS, Issue 2 2001Daniel P. McMillen Time periods are typically highly aggregated for repeat sales estimators because of the small number of observations available in some periods. We use a flexible Fourier expansion to account for time, which we treat as a continuous variable. Our estimator saves degrees of freedom and enables us to estimate the price index efficiently even for times with few sales. We present estimated price indexes for the City of Chicago, Cook County, and several suburbs. [source] Gandhi Marg: the social construction and production of an ethnic economy in ChicagoCITY & SOCIETY, Issue 2 2005KATHLEEN BUBINAS In this paper, I critically examine the processes underlying the reconfiguration of urban space by players in an Asian Indian ethnic economy in the city of Chicago. I argue that Asian Indian immigrants have altered city space to fit their personal visions of a dynamic, successful ethnic commercial center that represents multiple possibilities simultaneously: a location for Indian place-making, the experience of community, and a site for political power. [source] |