Application of mesocellular siliceous foams (MCF) for surface-assisted laser desorption ionization mass spectrometry (SALDI-MS) Analysis of fingermarks

Recent advances in nanotechnology applied in forensic sciences have contributed to consider new approaches including chemical evaluation of latent fingermarks. Significant improvement to the detection of small organic molecules has been reached with matrix-free methods associated to laser desorption/ionization mass spectrometry. The present study investigated the application of mesocellular siliceous foam (MCF) as an ionizing agent for laser desorption/ionization (LDI-MS) analysis of fingermarks as a proof of concept research. Fingermarks from three different donors were deposited directly onto a MALDI target plate and α-CHCA matrix solution, MCF ethanolic suspension or MCF/magnetic powder mixture were used for treatment. Microscopy characterization of MCF support showed particles with irregular morphology and variable sizes, and a unordered porous surface with pores diameter ranging from about 10 to 20?nm. Results showed less intense peaks in the spectra produced by the MCF support (control). Analysis of fingermarks showed ions related to endogenous and exogenous molecular components, including possible lipids from human sebum and quaternary ammonium cations commonly present in cosmetics. Promising and reproducible results were obtained for the fingermarks dusted with the MCF/magnetic powder mixture. Considering the forensic applications of nanomaterials for the analysis of small molecules in biological samples by matrix-free LDI techniques, the advantages of silica based materials should be further investigated.     

Adding Security,but Subtracting Safety? Exploring Schools’ use of Multiple Visible Security Measures

In response to continued concerns over crime and violence, schools are increasingly employing visible security measures such as cameras, metal detectors, and security personnel. These security measures are not mutually exclusive, but few studies have considered the relationship between the use of multiple forms of security and youth’s exposure to drugs, fighting, property crime, and firearms at school. To address this issue, we analyzed nationally representative school administrator-reported data from the School Survey on Crime & Safety, using a quasi-experimental design with propensity scores to adjust for potential confounding factors. The results indicated that utilization of multiple security measures reduced the likelihood of exposure to property crime in high schools, but most other security utilization patterns were associated with poorer school safety outcomes. Our findings provide guidance to policymakers in considering whether to use – or expand – visible school security measures in schools.     

Examining the Use of Police in Schools: How Roles may Impact Responses to Student Misconduct

Prior research has suggested that the use of police in schools has resulted in negative outcomes for students; however, this line of research has failed to consider other factors that may influence an officer’s response outside of their mere presence. Over time, the roles and duties of police in a school setting have continued to expand as a result of social and political shifts in criminal justice and education policy. Paralleling this expansion has been the development of a more punitive school discipline environment where students are more likely to be suspended, expelled, a ticketed, and/or arrested. As these two separate bodies of research have been tangentially related, in this study, we use role theory as a guiding framework to connect these two bodies of research and examine how officers’ roles may influence their responses to student misconduct. Data was collected via an online survey distributed to a sample of commissioned law enforcement officers working in Texas schools. The survey included measures of officer roles as well as vignettes to assess how officers would respond to specific situations involving students. Results of this study suggest that an officer’s role may influence how they respond to student misconduct, and therefore, may be an important piece of information for both researchers and practitioners when looking to minimize the potential negative impacts of using police in schools. These findings related to officer roles are discussed in terms of both practice and future research, while considering the larger discipline environment of schools.     

Emerging Green Synergy in the Science/Religion Relationship: From Conflict to Potentially Planet-Saving Cooperation

Abstract

Nature has inspired awe throughout history, stimulating scientific study often conflicting with theology. Conflict is manifest as promotion of creationism and its euphemisms in school curricula, and science denial, recently in the U.S. Government. Unification, however, is an emerging reality for the science/religion relationship, driven by convergent evolution of each toward saving our shared planet from ourselves. No longer can religion deny science, nor science overlook the power of religious institutions toward achieving our common existential goal. The science/religion relationship, often portrayed as static, has proved dynamic, with emerging green science and green religion cooperating toward creating potentially planet-saving synergies.     

Students’ Feelings of Safety,Exposure to Violence and Victimization,and Authoritative School Climate

Although many students feel unsafe at school, few malleable factors have been identified to increase students’ feelings of safety. Drawing on criminological behavior control theories, this study posits authoritative school climate as one such factor. With data from two nationally representative datasets, this study uses path analysis to examine the relationship between authoritative school climate and feelings of safety, as well as the extent to which this relation is explained by exposure to violence and victimization. Across both datasets, a more authoritative school climate was associated with increased feelings of safety at school. Both models also indicated that this relationship was explained in part by reduced exposure to violence and victimization, although the strength of this indirect effect varied across models. These findings suggest that strengthening students’ relationships with adults and increasing the fairness and consistency of rules in the school may both reduce exposure to violence and victimization and help students feel safer at school.     

Cloud forecasting: Legal visibility issues in saturated environments

The advent of cloud computing has brought the computing power of corporate data processing and storage centers to lightweight devices. Software-as-a-service cloud subscribers enjoy the convenience of personal devices along with the power and capability of a service. Using logical as opposed to physical partitions across cloud servers, providers supply flexible and scalable resources. Furthermore, the possibility for multitenant accounts promises considerable freedom when establishing access controls for cloud content. For forensic analysts conducting data acquisition, cloud resources present unique challenges. Inherent properties such as dynamic content, multiple sources, and nonlocal content make it difficult for a standard to be developed for evidence gathering in satisfaction of United States federal evidentiary standards in criminal litigation. Development of such standards, while essential for reliable production of evidence at trial, may not be entirely possible given the guarantees to privacy granted by the Fourth Amendment and the Electronic Communications Privacy Act. Privacy of information on a cloud is complicated because the data is stored on resources owned by a third-party provider, accessible by users of an account group, and monitored according to a service level agreement. This research constructs a balancing test for competing considerations of a forensic investigator acquiring information from a cloud.     

Policing labor: the power of private security guards to search workers in Brazil

The losses caused by worker theft is one of the most concerning security problems for corporations. Private policing of the workplace is central to cutting down on such losses and keeping up profits. One of the most frequently used methods in such policing is searching workers. Despite the importance of searches and their potential for intrusion into individuals’ right to privacy, the normative bases for and limits to the use of this power have so far been little studied. The aim of this paper is to analyze the legal foundations and limits imposed by the Brazilian State so that private security guards can conduct searches in the workplace. The analysis is based on a qualitative study of Brazilian labor law and a qualitative/quantitative study of 376 judicial decisions on searches collected randomly in two Brazilian states between 2010 and 2013. The data shows that searches can be conducted in the workplace based on the employer’s right to manage production and protect their property. It also indicates the existence of relatively flexible limits to searches. Only a minority of the courts impose restrictions on searches similar to those set for police officers. Most judges allow more extensive searches than those permitted within the scope of public justice systems. The consequences of these findings are discussed.     

Perceptually contemporaneous offenses: Gender and fear of crime among African-American university students

There is consensus in the fear of crime literature that women are more afraid of crime than men. Research has explored perceptually contemporaneous offenses to explain the differences in male and female fear, and to explore the possibility that different crimes shape their respective fears. Victimization studies consistently find that African-American citizens are at a higher risk of crime and fear of crime. Using a 2013 sample of a Historically Black Colleges and Universities (HBCU) in the south, the present study will 1) report gender differences in fear of crime, 2) test whether gender differences in fear of crime are explained by perceptually contemporaneous offenses, and 3) assess whether or not men and women share the same master offenses.     

Recreational Sporting Activity Vehicle‐Related Deaths

Deaths occurring in the setting of nonprofessional, vehicle‐related, recreational sporting activities occurring on land or in water during warm or winter months represent a diverse group of cases. These deaths tend to involve scenarios where the participants are purposefully attempting to enjoy themselves prior to experiencing sudden, catastrophic accidents resulting in lethal outcomes. Ultimately, many of the deaths are related to the high speed at which these vehicle‐related activities normally occur. Three broad categories of factors may play contributory roles in death: human factors, vehicle factors, and environmental factors. A series of selected cases are presented, representing examples of varying activity types, involving motorized and nonmotorized vehicles, land and water activities, and warm weather and cold weather environments. For each case, the various human, vehicle and environmental factors believed to be contributory to the accident are considered, and strategies for prevention of these and similar deaths involving recreational sporting vehicles are presented.     

National-State Relations: Cooperative Federalism in the Twentieth Century

Daniel J. Elazar's 1959 Ph.D. dissertation demonstrated conclusivelythe inadequate explanatory value of the theory of dual federalismand the prevalence of cooperative national-state relations inthe period ending in 1913. Congressional employment of totaland partial preemption and coercive regulatory powers since1965 raises the question whether the theory of cooperative federalismexplains fully the functioning of the federal system at thebeginning of the twenty-first century. An examination of national-staterelations reveals that each of the two theories retains a degreeof explanatory value. There is, however, a need for a more generaltheory incorporating elements of these theories and coerciveuse of congressional powers, highlighting the generally cooperativenature of national-state relations, and explaining the continuousreadjustment of the respective powers of Congress and states.