Can analysis of a small clod of soil help to solve a murder case?

Soil forensics utilizes extensive soil information to answer legal questions and test hypotheses. The main difficulty often is the determination of different variables from a small amount of soil sample collected on the suspect. We developed a sequential mineralogical and chemical analyses to assess a limited quantity of soil vestiges (0.5 g) from a suspect's vehicle (adhered to the outside rear-view mirror and to the left front fender) involved in a murder case and compared them with the surface samples found at the victim's body disposal site at the Graciosa Road, Paraná State, Brazil. All results affirm that the suspect’s vehicle could have been in contact with the edge of the Graciosa Road, approximately the place where the victim’s body was located. As a result of the soil analysis and comparison, the results support the likely contact of the suspect’s vehicle with the crime scene.     

Evaluation of Lip Prints on Different Supports Using a Batch Image Processing Algorithm and Image Superimposition

This study aimed to develop and to assess an algorithm to facilitate lip print visualization, and to digitally analyze lip prints on different supports, by superimposition. It also aimed to classify lip prints according to sex. A batch image processing algorithm was developed, which facilitated the identification and extraction of information about lip grooves. However, it performed better for lip print images with a uniform background. Paper and glass slab allowed more correct identifications than glass and the both sides of compact disks. There was no significant difference between the type of support and the amount of matching structures located in the middle area of the lower lip. There was no evidence of association between types of lip grooves and sex. Lip groove patterns of type III and type I were the most common for both sexes. The development of systems for lip print analysis is necessary, mainly concerning digital methods.     

Digitizing Peircean semiotics to analyze students’ peer-review comments: classroom use of an application in open-source R

ABSTRACT

Statistical software applications are increasingly used to measure student engagement in the classroom. However, more work remains to be done to clarify how meaning is created and measured in classroom settings. With the growing use of technology in the classroom, students’ peer review has become a standard practice to improve students’ writing skills. This article examines the use of an open-source R software application based on Peirce’s sign theory to analyze students’ peer-review comments. Peer review is the assessment of student or professional work by others. The importance of open-source R as a platform lies in the fact that users can extend its code without having to ask permission. The results suggest a new approach, based on computational and social semiotics, to the assessment of students’ peer-review comments in higher education.     

The Use of Rental Housing Assistance by Immigrants in the United States and New York City

Abstract

The large influx of immigrants to the United States and New York City from poorer countries has sparked considerable debate as to whether immigrants are becoming a “public charge” to American society. Most arguments have centered around immigrants’ use of cash assistance programs. This article compares immigrants’ receipt of rental housing assistance with that of native‐born Americans.

Bivariate analyses reveal that immigrants, as a group, are no more likely than native‐born households to use any form of rental housing assistance. Indeed, in most instances immigrants are less likely than native‐born households to receive assistance, with two exceptions: immigrants who have been in the United States since 1970 and immigrants from the former Soviet Union in New York City. Multivariate analyses reveal similar results, except that immigrants who have been in the United States since 1970 are no more likely than other immigrants to receive housing assistance when we control for other factors.     

Surrejoinder

Abstract

Boardman now says that my critique of mainstream quantitative studies of Chinese foreign policy is “perfectly justified,” yet he continues to argue in the same old unjustifiable manner. He continues the quest for timeless, placeless truths which all can agree to, a quest which both Marx and Weber long ago pointed out was impossible in a world of conflictful social relations where perception cannot be divorced from social perspective. The data does not gather itself, pattern itself or explain itself.     

Al Qaeda in the Arabian Peninsula: Framing Narratives and Prescriptions

Al Qaeda in the Arabian Peninsula has positioned itself at the vanguard of a media revolution in which terrorist groups both create and frame news events to an unprecedented extent. Through the publication of its e-magazine Sada al-Malahim (The Echo of Epic Battles), the organization has sought to mobilize both Yemeni and non-Yemeni Muslim, Arabic-speaking audiences to carry out violent jihad. This article utilizes the concept of collective action frames to analyze Al Qaeda in the Arabian Peninsula's media output, identifying the organization's grievance narratives, ideological justifications for violent actions, and means to strengthen its credibility among its intended audiences.