113 research outputs found

    New Patterns of Immigrant Settlement in California

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    Based on 1990-2007 census data, examines changes in the size, composition, and characteristics of the state's new immigrant population; in the areas in which they settle; and in the economic and social factors behind the trends. Considers implications

    Did the 2007 Legal Arizona Workers Act Reduce the State's Unauthorized Immigrant Population?

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    We test for an effect of Arizona’s 2007 Legal Arizona Workers Act (LAWA) on the proportion of the state population characterized as foreign-born, as non-citizen, and as non-citizen Hispanic. We use the synthetic control method to select a group of states against which the population trends of Arizona can be compared. We document a notable and statistically significant reduction in the proportion of the Arizona population that is foreign-born and in particular, that is Hispanic noncitizen. The decline observed for Arizona matches the timing of LAWA's implementation, deviates from the time series for the chosen synthetic control group, and stands out relative to the distribution of placebo estimates for the remainder of states in the nation. Furthermore, we do not observe similar declines for Hispanic naturalized citizens, a group not targeted by the legislation. Our results on LAWA's impact on the housing market provide further support for our findings.illegal, unauthorized, undocumented, immigration, Hispanic, Arizona

    Lessons From the 2007 Legal Arizona Workers Act

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    Considers the effectiveness of a state work authorization verification system in reducing illegal immigration and employment and improving outcomes for authorized workers, as well as economic and societal costs and potential role for employer sanctions

    Trumped Up Charges: Empirical Effects of U.S. Immigration Reform on Crime and Jobs

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    This brief examines the effects, both intended and unintended, of two previous efforts to deter and regulate unauthorized immigration. Recent research shows that the Immigration and Reform Act of 1986, by cutting off access to legal employment for undocumented immigrants, actually increases the probability that some people who are not in the country legally will engage in crime. And despite heightened efforts to police and deport undocumented immigrants in accordance with Section 287(g) of the Immigration and Nationality Act, studies indicate that any resultant decreases in immigrant populations did nothing to improve employment opportunities for low-skilled native residents. While past research reveals some of the limitations and unintended negative impacts of laws aimed at making the U.S. less attractive to unauthorized immigrants, less is known about the potential positive impacts of laws aimed at inclusion. Such knowledge could help to enlighten future debates over comprehensive reform.https://repository.upenn.edu/pennwhartonppi/1029/thumbnail.jp

    Genomic Prediction of Single Crosses in the Early Stages of a Maize Hybrid Breeding Pipeline

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    Prediction of single-cross performance has been a major goal of plant breeders since the beginning of hybrid breeding. Recently, genomic prediction has shown to be a promising approach, but only limited studies have examined the accuracy of predicting single-cross performance. Moreover, no studies have examined the potential of predicting single crosses among random inbreds derived from a series of biparental families, which resembles the structure of germplasm comprising the initial stages of a hybrid maize breeding pipeline. The main objectives of this study were to evaluate the potential of genomic prediction for identifying superior single crosses early in the hybrid breeding pipeline and optimize its application. To accomplish these objectives, we designed and analyzed a novel population of single crosses representing the Iowa Stiff Stalk synthetic/non-Stiff Stalk heterotic pattern commonly used in the development of North American commercial maize hybrids. The performance of single crosses was predicted using parental combining ability and covariance among single crosses. Prediction accuracies were estimated using cross-validation and ranged from 0.28 to 0.77 for grain yield, 0.53 to 0.91 for plant height, and 0.49 to 0.94 for staygreen, depending on the number of tested parents of the single cross and genomic prediction method used. The genomic estimated general and specific combining abilities showed an advantage over genomic covariances among single crosses when one or both parents of the single cross were untested. Overall, our results suggest that genomic prediction of single crosses in the early stages of a hybrid breeding pipeline holds great potential to redesign hybrid breeding and increase its efficiency

    Concomitant invasive pneumococcal disease in a patient with COVID-19 – A case report from the Louisville Epidemiology Study

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    A 60-year-old male presented to the Emergency Department (ED) with a one-two day history of confusion, headache, and subjective fever. Because he had met with a contact two days prior to admission who had recently traveled from the Bahamas, a COVID-19 nasopharyngeal (NP) and oropharyngeal (OP) polymerase chain reaction (PCR) test was ordered. He was diagnosed with bacterial meningitis based on presenting neurologic symptoms and the identification of Streptococcus pneumoniae from blood cultures. The COVID-19 NP and OP test returned positive, although he never developed shortness of breath, cough, other respiratory symptoms, diarrhea, abdominal pain, nausea, vomiting, or any change in sense of smell or taste. On day three of admission, the patient had improved clinically on intravenous (IV) antibiotics and was discharged home with instructions to self-quarantine. This case demonstrates the possibility of co-infections with COVID-19 and raises the possibility of an association between COVID-19 and patient susceptibility to invasive pneumococcal disease (IPD)

    Covington, GA

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    Prepared by the Spring 2015 Preservation Planning Class. These Design Guidelines were created to guide property owners and the Historic Preservation Commission during the review process. The Guidelines ensure the continued historic integrity of properties within the district. The Covington Historic District and the North Covington Historic District are outlined within this document.https://scholarworks.gsu.edu/history_heritagepreservation/1012/thumbnail.jp
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