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The use of common operational picture (COP) technology can give law enforcement and its public safety response partners the capacity to develop a shared situational awareness to support effective and timely decision-making. These technologies collate and display information relevant for situational awareness (e.g., the location and what is known about a crime incident, the location and operational status of an agency's patrol units, the duty status of officers).

CNA conducted a mixed-methods study including a technical review of COP technologies and their capacities and a set of case studies intended to produce narratives of the COP technology adoption process as well as lessons learned and best practices regarding implementation and use of COP technologies.

This study involved four phases over two years: (1) preparation and technology review, (2) qualitative case studies, (3) analysis, and (4) development and dissemination of results. This study produced a market review report describing the results from the technical review, including common technical characteristics and logistical requirements associated with COP technologies and a case study report of law enforcement agencies' adoption and use of COP technologies. This study provides guidance and lessons learned to agencies interested in implementing or revising their use of COP technology. Agencies will be able to identify how they can improve their information sharing and situational awareness capabilities using COP technology, and will be able to refer to the processes used by other, model agencies when undertaking the implementation of COP technology.

The goal of this mixed-methods study was to evaluate the effectiveness of community based cross-age mentoring to reduce negative outcomes related to violence exposure/engagement and promote positive development among African-American and Latinx youth from multiple sites serving four low-income, high violence urban neighborhoods, using youth mentors from the same high-risk environment. The program was named by youth mentors, "Saving Lives, Inspiring Youth" (or SLIY henceforth). Cross-age peer mentoring programs promise to solve problems and ineffectiveness of other types of mentoring programs, but few have been systematically studied in high-poverty, high-crime communities. In collaboration with several community organizations, a prospective approach was implemented to follow cross-age mentors and mentees for up to one year of mentoring. Both quantitative and qualitative methods were employed to examine possible changes in a number of relevant constructs, and to understand program impact in greater depth.

Mentoring sessions lasting one hour took place each week, with an hour debriefing session for mentors following each mentoring session. Quantitative data were collected pre, post and at a 9-12 month follow-up. Throughout the mentoring intervention, several forms of qualitative data were gathered to make it possible for youth voices to permeate understanding findings, to illuminate program processes that youth perceived as helpful and not helpful, and to provide multiple perspectives on youths' resilience and their understanding of the risks they faced. Both mentors and community collaborators were trained and engaged as community researchers. School-based data were also collected. Demographic variables include participants' age, race, and grade in school.

Using data from all three waves of the Project on Human Development in Chicago Neighborhoods (PHDCN), this secondary data analysis examined the long-term effects of intimate partner violence (IPV) exposure during childhood and adolescence on subsequent externalizing behaviors (i.e., delinquency, violence, and substance use related offending).

The research questions for this study were as follows:

1. Are there significant differences in the mean scores of different externalizing behaviors (measured as "offending" in the present study) in any of the three PHDCN waves between youth exposed to IPV and youth not exposed to IPV?
2. Are there distinct developmental trajectories of externalizing behaviors among youth exposed to IPV when compared to those not exposed to IPV?
3. How do different individual- and neighborhood-level variables act in predicting the developmental paths of externalizing behaviors among youth exposed to IPV?

Propensity score matching (PSM) was employed to match individuals reporting IPV exposure with those not exposed to IPV on key variables. Longitudinal latent class analyses (LLCA) were utilized to estimate the longitudinal developmental trajectories of externalizing behaviors independently for IPV and non-IPV exposed males and females and compared to each other. Multinomial logistic regression models were estimated separately for males and females exposed to IPV during their childhoods to examine the effect of different hypothesized class membership predictors.

This collection contains a master dataset primarily sourced from Emery's (2006) data augmentation along with key variables from all three waves from the PHDCN Longitudinal Cohort Study, cohorts 12 and 15 (DS1); datasets constructed solely for multinomial logistic regressions for youth exposed to IPV, separated by sex (DS2 and DS3); data for the final LLCA models separated by sex and exposure to IPV (DS4 to DS7); and probabilities and latent classes created using Mplus (DS8 to DS9) that can be merged to the multinomial regression data using the SUBID variable. Additionally, syntax for variable and model constructions, as well as Mplus output, have been included as a zip package. Please refer to the P.I. documentation for more information.

This 2020 study was funded by the National Institute of Justice to advance knowledge about the microscopical methods used to examine materials commonly found in commercial and improvised low explosives. To achieve this, researchers developed reference documentation and an "Atlas of Unburned, Partially Burned, and Fully Burned Low Explosive and Related Materials" for the characterization, comparison, and identification of such materials. This data collection includes 57 files with images and descriptive captions documenting methods of microscopical analysis for a variety of chemically reacted, improvised low explosives and related residues. Details on the optical and physical properties, information regarding chemical solubility, recrystallization, microcrystal and microchemical spot tests, melting points, potential decomposition products, references, and photomicrographs of these materials are included as a PDF table. Additional information on this research can be found on the McCrone Research Institute website.

This study evaluated CeaseFire, a program of the Chicago Project for Violence Prevention. The evaluation had both outcome and process components.

The outcome evaluation assessed the program's impact on shootings and killings in selected CeaseFire sites. Two types of crime data were compiled by the research team: Time Series Data (Dataset 1) and Shooting Incident Data (Dataset 2). Dataset 1 is comprised of aggregate month/year data on all shooting, gun murder, and persons shot incidents reported to Chicago police for CeaseFire's target beats and matched sets of comparison beats between January 1991 and December 2006, resulting in 1,332 observations. Dataset 2 consists of data on 4,828 shootings that were reported in CeaseFire's targeted police beats and in a matched set of comparison beats for two-year periods before and after the implementation of the program (February 1998 to April 2006).

The process evaluation involved assessing the program's operations and effectiveness. Researchers surveyed three groups of CeaseFire program stakeholders: employees, representatives of collaborating organizations, and clients.

The three sets of employee survey data examine such topics as their level of involvement with clients and CeaseFire activities, their assessments of their clients' problems, and their satisfaction with training and management practices. A total of 154 employees were surveyed: 23 outreach supervisors (Dataset 3), 78 outreach workers (Dataset 4), and 53 violence interrupters (Dataset 5).

The six sets of collaborating organization representatives data examine such topics as their level of familiarity and contact with the CeaseFire program, their opinions of CeaseFire clients, and their assessments of the costs and benefits of being involved with CeaseFire. A total of 230 representatives were surveyed: 20 business representatives (Dataset 6), 45 clergy representatives (Dataset 7), 26 community representatives (Dataset 8), 35 police representatives (Dataset 9), 36 school representatives (Dataset 10), and 68 service organization representatives (Dataset 11).

The Client Survey Data (Dataset 12) examine such topics as clients' involvement in the CeaseFire program, their satisfaction with aspects of life, and their opinions regarding the role of guns in neighborhood life. A total of 297 clients were interviewed.

These data are part of NACJD's Fast Track Release and are distributed as they were received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except for the removal of direct identifiers. Users should refer to the accompanying readme file for a brief description of the files available with this collection and consult the investigator(s) if further information is needed.

This study was a process evaluation of three programs funded by the U.S. Department of Justice (DOJ) Office for Victims of Crime (OVC) to identify and provide services to victims of sex and labor trafficking who are U.S citizens and lawful permanent residents (LPR) under the age of 18. The three programs evaluated in this study were:

1. The Standing Against Global Exploitation Everywhere (SAGE) Project
2. The Salvation Army Trafficking Outreach Program and Intervention Techniques (STOP-IT) program
3. The Streetwork Project at Safe Horizon

This study contains data from the Northwestern Juvenile Project (NJP) series, a prospective longitudinal study of the mental health needs and outcomes of youth in detention.

This study examined the following goals: (1) firearm involvement (access, ownership, and use) during adolescence and young adulthood; (2) perpetration of firearm violence over time; and (3) patterns of firearm victimization (injury and mortality) over time. This study addressed the association between early involvement with firearms and firearm-firearm perpetration and victimization in adulthood.

The original sample included 1,829 randomly selected youth, 1,172 males and 657 females, then 10 to 18 years old, enrolled in the study as they entered the Cook County Juvenile Temporary Detention Center from 1995 to 1998. Among the sample were 1,005 African Americans, 524 Hispanics, and 296 non-Hispanic white respondents. Participants were tracked from the time they left detention. Re-interviews were conducted regardless of where respondents were living when their follow-up interview was due: in the community, correctional settings, or by telephone if they lived farther than two hours from Chicago.

This study contains data from the Northwestern Juvenile Project (NJP) series, a prospective longitudinal study of the mental health needs and outcomes of youth in detention.

The research team interviewed participants from the Northwestern Juvenile Project (NJP) (originally enrolled as they entered the Cook County Juvenile Temporary Detention Center from 1995 to 1998, and now parents ages 34-43 years) and their oldest child age 10 to 17 years when sampled, and leveraged data already collected on parents' firearm involvement--during their own adolescence and young adulthood for the NJP.

In February 2016, Under the Rainbow (UTR), a pediatric trauma-based therapy program within Sinai Chicago's Behavioral Health department, joined with the Legal Council for Health Justice (LC), the scope of which includes assistance in accessing public benefits and special education, to form a medical-legal partnership (MLP). Integrating legal services with health care, the partnership allows patients seeking services at UTR to receive referrals for legal services through LC. The partnership is built on access to judicial and legal services as a social determinant of health that can lead to improved health outcomes, and thus the goal is to provide training and support to providers on legal and social barriers to health and provide free legal assistance to patients.

In this study, the research team conducted a formative evaluation of the existing MLP between the two organizations (located in Chicago, Illinois, United States). The specific aims of this evaluation were to:

1. Determine how a medical-legal partnership (MLP) can improve knowledge and understanding of domestic and community violence
2. Understand how the MLP can serve different populations by looking at program process and implementation in-depth
3. Prepare the MLP for impact evaluation to determine how the MLP can fill gaps in victimization research and legal intervention programs

Existing data from patient health risk assessments collected by UTR and legal services data collected by LC were obtained and analyzed. Clients had been served by UTR and referred to LC between July 2016 and May 2021. Interviews with staff at both organizations were conducted in 2019 and 2020. The research team also completed documentation review and created other artifacts (e.g. protocols, implementation guides, process maps) as a result of the evaluation.

There have been many studies about how sex traffickers recruit sex workers. However, very few studies evaluated how sex traffickers are recruited and learn to recruit sex workers or sex trafficking victims or facilitate sex work, along with facilitation strategies, including interpersonal and economic coercion. This study aimed to close the gap in the literature by investigating the etiology of becoming a sex trafficker or a sex market facilitator and how this knowledge is transmitted across the generations.

This mixed methods study used Respondent Driven Sampling (RDS) to recruit and survey sex traffickers in New York City and Chicago. Both cities have a long history of many types of sex market facilitation, ranging from ancillary roles in sex market facilitation up to sex trafficking. Qualitative data was collected through in-depth, semi-structured interviews with 183 sex market facilitators (New York City (n=84) and Chicago (n=99)) about facilitators' social learning processes and social and criminal networks. Additionally, this study collected rich qualitative narratives, revealing how facilitators perceived themselves, their self-identities, and their roles as mentors. These data were recorded, stored securely, and later coded by researchers into a quantitative dataset deposited with ICPSR. This quantitative dataset captures facilitator/trafficker demographic characteristics and includes variables describing how sex traffickers are groomed or mentored to be traffickers, how they groom new traffickers, and how they interact and network socially with other traffickers and sex workers. The aforementioned qualitative data are not included in this release.

These data are part of NACJD's Fast Track Release and are distributed as they there received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except of the removal of direct identifiers. Users should refer to the accompany readme file for a brief description of the files available with this collections and consult the investigator(s) if further information is needed.

The purpose of the study was to examine whether and how foreclosures affect neighborhood crime in five cities in the United States. Point-specific crime data was provide by the New York (New York) Police Department, the Chicago (Illinois) Police Department, the Miami (Florida) Police Department, the Philadelphia (Pennsylvania) Police Department, and the Atlanta (Georgia) Police Department. Researchers also created measures of violent and property crimes based on Uniform Crime Report (UCR) categories, and a measure of public order crime, which includes less serious offenses including loitering, prostitution, drug crimes, graffiti, and weapons offenses. Researchers obtained data on the number of foreclosure notices (Lis Pendens) filed, the number of Lis Pendens filed that do not become real estate owned (REO), and number of REO properties from court fillings, mortgage deeds and tax assessor's offices.

Despite much recent attention devoted to understanding the ramifications of residential mobility, especially negative consequences for youth, there is scant research exploring how inner-city mobility impacts youth violence and victimization among minorities and immigrants. Leaving the city imparts benefits: decreasing deviance and improving youth outcomes. Considering that many are unable to "escape" the city, clarifying what effects, if any, inner-city mobility has is critical. Destination neighborhoods for youth who move in the city are either contextually the same, better, or worse than their original neighborhood. Evidence suggests that immigrant families are more likely to move as are racial minorities. Because of this, the researchers examined the extent to which moving within a city affects minority and immigrant youth experiences, particularly in relation to changes in neighborhood collective efficacy; a major characteristic shaping community crime rates and youth violence.

This project involved four main goals:

1. identify key characteristics of the destination neighborhoods and those who are moving within the city of Chicago;
2. understand how inner-city mobility of minority and immigrant youth affects engagement in violence and victimization;
3. determine whether vertical or horizontal mobility with respect to key neighborhood factors differentially influences minority and immigrant youth outcomes;
4. assess who fares better - youth who vertically move (to better or worse neighborhoods), those who do not move, or those who horizontally move (to equivalent neighborhoods).

This research used data from the Project on Human Development in Chicago Neighborhoods (PHDCN). Data were drawn from both the Longitudinal Cohort Study (N=1,611) and Community Survey (N=97). The rich data from the Community Survey affords the opportunity to examine how community characteristics like collective efficacy, disorder, and indicators of social disorganization can impact a variety of youth behaviors among at-risk youth over time between Wave 1 and Wave 2 and Wave 2 and Wave 3. The Longitudinal Cohort Study provides data on youth characteristics and experiences with violence, and ecological information on family and peer relationships. The investigators focused primarily on three of the seven youth cohorts from the Longitudinal Cohort Study: 9, 12, and 15. The ages of these youth during the study period place them at increased risk for exposure to community violence, and place them in range for aging into, peaking, or aging out of crime and delinquency.

The Longitudinal Cohort Study respondents are nested in neighborhood clusters and multilevel models are employed to assess the outcomes victimization and violence within neighborhood context. The researchers employed a series of hierarchical generalized linear models using HLM 7 in addition to running several analyses of variance (ANOVA) permitting examinations between groups of interest.