196,750 research outputs found

    Photonic Band Gaps and Unusual Photon Transport in Hyperuniform Disordered Structures

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    We demonstrate that hyperuniform disordered structures support electromagnetic states with very different transport properties, ranging from Bloch-like modes to diffusive states with characteristic time scales almost two-orders of magnitude larger

    What drives US immigration policy? Evidence from congressional roll call votes

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    Immigration is one of the most hotly debated policy issues in the United States today. Despite marked divergence of opinions within political parties, several important immigration reforms were introduced in the post 1965 era. The purpose of this paper is to systematically analyze the drivers of congressional voting behavior on immigration policy during the period 1970-2006, and in particular, to assess the role of economic factors at the district level. Our findings provide robust evidence that representatives of more skilled labor abundant constituencies are more likely to support an open immigration policy concerning unskilled labor. Thus, a simple factor-proportions-analysis model provides useful insights regarding the policy making process on one of the most controversial facets of globalization

    Confirmation Class of 1965: Rabbi Stanley Relkin, David Axelrad; 2nd Row: Ruth Steinhardt, Brenda Siegel, Joanne Pedersen

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    Black and white photographs of the confirmation class of 1965: Rabbi Stanley Relkin, David Axelrad; 2nd Row: Ruth Steinhardt, Brenda Siegel, and Joanne Pedersen

    Migration, friendship ties, and cultural assimilation

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    We study migrants’ assimilation by analyzing whether friendship with natives is a measure of cultural assimilation and by investigating the formation of social ties. Using the German Socio-Economic Panel, we find that migrants with a German friend are more similar to natives than those without along several important dimensions, including concerns about the economy, interest in politics and a host of policy issues. Turning to friendship acquisition, we find that becoming employed, time spent in the host country, the birth of a child, residential mobility and additional education acquired in the host country are significant drivers of social network variation

    Women and children on shopping trip in front of Schmidt and Steinhardt Store, Hondo, Texas

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    Photograph shows (l. to r.'' Roberta Hopp Davis, her daughter Mary Octavia ''Dutz'' Davis (born May 11, 1901), Jules B. Schmidt (also born 1901), and his mother, Mrs. William Schmidt, standing on sidewalk in front of entrance to store.Dated on back of original.;Accompanying note by Lucy J. Davis: ''...In front of Schmidt and Steinhardt Store on corner of Ave M and 18th (then Bandera Ave and N. Front St.'' A simple shopping trip at local stores...'

    Dr. Duane M. Jackson, Morehouse College, July 2011

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    This video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
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