University of Colorado Colorado Springs

About: University of Colorado Colorado Springs is a education organization based out in Colorado Springs, Colorado, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 6664 authors who have published 10872 publications receiving 323416 citations. The organization is also known as: UCCS & University of Colorado at Colorado Springs.

Immigration, Crime, and Victimization: Rhetoric and Reality

Abstract: Contrary to popular perceptions that immigration increases crime, the research literature demonstrates that immigration generally serves a protective function, reducing crime. This review takes as its starting point the contradiction between the rhetoric and the reality of immigration and crime in the United States. We begin by exploring the conditions under which immigration reduces crime and those under which it has less or no effect, with particular attention to traditional and new destination sites. We then demonstrate how the moral panic about immigration has contributed to unprecedented levels of new legislation and intensified enforcement practices. These new laws and policies, we suggest, are making immigrants and their communities less safe. We consider some of the ways in which immigrants have become more vulnerable and how that vulnerability is patterned and nuanced. We close by examining recent research in other parts of the world, finding some similarities but also differences in the relation...

iShuffle: Improving Hadoop Performance with Shuffle-on-Write

Abstract: Hadoop is a popular implementation of the MapReduce framework for running data-intensive jobs on clusters of commodity servers. Shuffle , the all-to-all input data fetching phase between the map and reduce phase can significantly affect job performance. However, the shuffle phase and reduce phase are coupled together in Hadoop and the shuffle can only be performed by running the reduce tasks. This leaves the potential parallelism between multiple waves of map and reduce unexploited and resource wastage in multi-tenant Hadoop clusters, which significantly delays the completion of jobs in a multi-tenant Hadoop cluster. More importantly, Hadoop lacks the ability to schedule task efficiently and mitigate the data distribution skew among reduce tasks, which leads to further degradation of job performance. In this work, we propose to decouple shuffle from reduce tasks and convert it into a platform service provided by Hadoop. We present iShuffle , a user-transparent shuffle service that pro-actively pushes map output data to nodes via a novel shuffle-on-write operation and flexibly schedules reduce tasks considering workload balance. Experimental results with representative workloads and Facebook workload trace show that iShuffle reduces job completion time by as much as 29.6 and 34 percent in single-user and multi-user clusters, respectively.

Discovery of a Sodium-Ordered Form of Na3V2(PO4)3 below Ambient Temperature

Abstract: The crystal structure of the NASICON Na3V2(PO4)3 phase (NVP) has been investigated as a function of temperature. Combining laboratory and synchrotron X-ray powder diffraction with single crystal X-ray diffraction, we demonstrate the presence of four polymorphs of NVP from 30 to 225 °C. While the high temperature γ-NVP crystallizes in the classical rhombohedral cell (S.G. R3c, a = 8.73382(4) A, c = 21.91438(17) A), the low temperature α-NVP undergoes a monoclinic distortion (S.G. C2/c, a = 15.1244(6) A, b = 8.7287(3) A, c = 21.6143(8) A, β = 90.163(2)°) together with an ordering of the Na atoms. In the middle temperature range, two incommensurate modulated structures (β- and β′-NVP) are also reported for the first time.

Systems and methods involving proximity, mapping, indexing, mobile, advertising and/or other features

Abstract: The present innovations relate to systems and methods involving proximity, mapping, indexing, mobile, advertising, such as contextual product offer implementations based on consumer location and purchasing modes, index-based mobile integrated indoor location processing and mapping, integrated index and location-based offer determination/processing, and mobile integrated offer redemption, among other features.

Stabilized resistive switching memory

Abstract: A non-volatile resistive switching memory that includes a material which changes between the insulative and conductive states. The material is stabilized against charge trapping by oxygen vacancies by an extrinsic ligand, such as carbon.