skip navigation

Add your conference to our Justice Events calendar


NCJRS Celebrates National Library Week April 12-18

National Library Week

Started in 1958, National Library Week is a nationwide observance celebrated by all types of libraries - including the NCJRS Virtual Library. NCJRS invites you to explore the breadth and scope of the NCJRS Virtual Library collection and services. With more than 220,000 collection documents and 60,000 online resources, including all known Office of Justice Programs works, it is one of the world’s largest criminal justice special collections.

We encourage your Feedback. Tell us how you use the NCJRS Virtual Library and Abstracts Database, how you access the collection, and any ways we can improve our services.

NCJRS Abstract

The document referenced below is part of the NCJRS Library collection.
To conduct further searches of the collection, visit the NCJRS Abstracts Database.

How to Obtain Documents
NCJ Number: NCJ 239863   Add to Shopping cart   Find in a Library
Title: Essays on the Spatial Clustering of Immigrants and Internal Migration within the United States
  Document URL: PDF 
Author(s): Matthew Howard Ruther
Date Published: 2012
Page Count: 159
  Annotation: This dissertation presents a series of essays examining the spatial clustering of immigrants and internal migration within the United States.
Abstract: This dissertation presents a series of essays that examine the spatial clustering of immigrants and internal migration patterns with the United States. The essays are presented in three chapters. The first chapter presents the results of a study that explored immigrant concentration and homicide mortality rates at the neighborhood level in Los Angeles County. The study found that immigrant concentration created a protective effect against homicide mortality at the neighborhood level, even after adjusting for the neighborhood structural factors commonly associated with homicide. The second chapter explored how foreign born population concentrations impacted homicide rates at the county level. Analysis of the data found that an increase in the foreign born population concentration was associated with decreases in the homicide rates at the county level. This finding was most pronounced in the South region of the United States. The third chapter of this dissertation explored the internal migration patterns of Puerto Ricans in the United States and compared the migration patterns of those born in the United States to those born in Puerto Rico. The analysis found that immigrants born in Puerto Rico were less mobile than the Puerto Ricans born in this country who were second and higher generations. In addition, Puerto Ricans born in this country were less likely to be influenced by the presence of Puerto Rican communities when making migration decisions, compared to their first generation counterparts. Tables, figures, maps, and references
Main Term(s): Immigrants/Aliens
Index Term(s): Homicide ; Puerto Ricans ; Homicide trends ; Neighborhood ; Puerto Rico
Sponsoring Agency: National Institute of Justice (NIJ)
US Department of Justice
Office of Justice Programs
United States of America
Grant Number: 2010-IJ-CX-0003
Sale Source: NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Type: Report (Study/Research)
Country: United States of America
Language: English
  To cite this abstract, use the following link:

* A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's web site is provided.