Study on the standard components of digital forensics laboratory

Recently, digital forensics has become increasingly important as it is used by investigation agencies, corporate, and private sector. To supplement the limitations of evidence capacity and be recognized in court, it is essential to establish an environment that ensures the integrity of the entire process ranging from collecting and analyzing to submitting digital evidence to court. In this study, common elements were extracted by comparing and analyzing ISO/IEC 17025, 27001 standards and Interpol and Council of Europe (CoE) guidelines to derive the necessary components for building a digital forensic laboratory. Subsequently, based on 21 digital forensic experts in the field, Delphi survey and verifications were conducted in three rounds. As a result, 40 components from seven areas were derived. The research results are based on the establishment, operation, management, and authentication of a digital forensics laboratory suitable for the domestic environment, with added credibility through collection of the opinions of 21 experts in the field of digital forensics in Korea. This study can be referred to in establishing digital forensic laboratories in national, public, and private digital forensic organizations as well as for employing as competency measurement criteria in courts to evaluate the reliability of the analysis results.     

Overview of the seized and examined pharmaceutical in the state of Minas Gerais-Brazil by the Civil Police from 2017 to 2022: A fundamental analysis of the recent impact over the drugs market

This work presents a data survey regarding the qualitative chemical analysis of drugs seized by the Police in the state of Minas Gerais between July 2017 and June 2022, including an evaluation of labeling of 265 samples of anabolic androgenic steroids (AAS) seized in 2020. The Active Pharmaceutical Ingredients (API) present in the samples were identified through chemical analysis and classified by system Anatomical Therapeutic Chemical (ATC) methods. Analysis of the labeling information for 265 samples of AAS followed the guidance of legislation RDC 71 (2009) from ANVISA. For this study 6355 seized pharmaceuticals underwent qualitative chemical analysis that corresponded to 7739 APIs successfully identified and classified. Among the components studied AAS, psychostimulants, anesthetics, and analgesics were the most commonly examined. AAS seized and tested increased by over 100% and for the majority of the samples analyzed were found to not match the labeling on the packaging. In the meantime, anti-obesity drugs presented a prominent increase of 400% from 2020/1 to 2021/2, during covid-19 quarantine. Seized pharmaceuticals and tests can support information in the planning of public health and safety policies.     

Evaluating the discriminating power of amino acid ratios on distinguishing dark colored hair samples

Human hairs are one of the most commonly encountered items of trace evidence. Currently, conventional methods for hair analysis include microscopic comparison and DNA analysis (nuclear and mitochondrial). Each approach has its own drawbacks. Hair proteins are stable and offer an alternative to DNA testing, as demonstrated with proteomics for distinguishing humans. However, proteomics is complicated and requires identifying peptides to remain intact following harsh sample preparation methods. Alternatively, the actual amino acid content of a hair sample may also offer important identifying information and actually requires proteins and peptides to be broken down completely rather than remaining intact. This study evaluated the discriminating power of using hair amino acid ratios to differentiate hair samples from 10 unrelated individuals with dark colored hair. Hair proteins were digested, derivatized, and analyzed using gas chromatography–mass spectrometry. Amino acid ratios were calculated for each individual and comparisons using ANOVA and post-hoc pairwise t-test with Bonferroni correction were made with amino acid ratios for individuals. Overall, out of the 45 possible pairwise comparisons between all hair samples, 38 (84%) were differentiable. Out of the 36 possible pairwise comparisons between brown haired individuals, 32 (89%) were considered differentiable using univariate statistics. Multivariate statistics were also attempted but, overall, univariate models were sufficient for exclusionary purposes. These results indicate that amino acid ratio analysis can potentially be used as an exclusionary method using hair if DNA analysis cannot be performed, or to corroborate conclusions made following microscopic analysis.     

Evaluating the sensitivity,stability, and cross-reactivity of commercial fentanyl immunoassay test strips

Illicit fentanyl has flooded the United States' drug market, increasing the risk of overdose and poisonings throughout the general population and accidental exposure among law enforcement officers confiscating the increasing number of seizures. Fentanyl test strips (FTS) are used to obtain presumptive information about the presence of fentanyl in a suspected sample. However, their adoption by law enforcement personnel and seized-drug analysts has been limited because most products are advertised for urine testing, not for assays using water solutions. This study presents an evaluation of four commercial FTS: Rapid Response from BTNX, Inc.; T-Dip Fentanyl (FTY) Urine Dip Cards obtained from Amazon.com ; Premier BioDip FYL10 from Premier Biotech Inc.; and MobileDetect Fentanyl strips from DetectaChem, Inc. Performance characteristics curves were used to compare the products' sensitivity, showing that all can reliably detect fentanyl in aqueous solutions at concentrations below 1 μg/mL, with some of the tests able to reliably detect the drug at 200 ng/mL. A stability study demonstrates the performance of all four FTS brands was only slightly affected after 30 days of storage at two extreme environmental conditions. Fentanyl-related substances are also evaluated using the Rapid Response FTS, which showed high cross-reactivity with para-fluorofentanyl and acetylfentanyl, but lower with ortho-chlorofentanyl, carfentanil, and 4-ANPP. Users should be aware that FTS may give false-negative results even when potentially dangerous levels of carfentanil are present. When testing other common drugs, adulterants, and diluents frequently encountered in seized tablets, concentration-dependent results were obtained and multiple instances of false positives were recorded.     

The “killer of the cane fields”: The social construction of the Australian coastal taipan

This paper makes an original contribution to human–animal studies through the application of social construction theory to an iconic species of Australian snake, the coastal taipan. Little research attention using this approach has been focused on reptiles, and this study addresses this gap in the literature. The taipan has achieved a high level of notoriety in Australia. This paper seeks to understand why and how this has occurred. Drawing on a range of data derived from analysis of newspaper articles, popular magazines and books, and the scientific literature, four dominant narratives are identified: the taipan as an object of science and natural history, as social problem, as object quest and as celebrity. The insights gained from this study support the contention that the meanings made of Australia's fauna are fluid, historically contextualised and socially constructed. In the specific case of the taipan, key individuals, including scientists, popular natural historians and snake men contributed greatly to the species’ construction, as did popular cultural forms such as newspapers and natural history books.     

Opening Pandora’s Box: How Does Defendant Race Influence Plea Bargaining?

Minority overrepresentation in the criminal justice system has long been an important topic of research and policy debate. In New York City, recent changes in the Rockefeller Drug Laws and the controversy around police stop-and-frisk practices have placed an even greater emphasis on the need for studying the possible impact of defendants’ race and ethnicity on criminal justice outcomes. Relatively little contemporary research, though, examines plea-bargaining outcomes. Using unique data on misdemeanor marijuana cases, this study examines the impact of defendants’ race on prosecutors’ decisions to make (a) plea offers for a lesser charge and (b) sentence offers for non-custodial punishments. Preliminary findings indicated that black defendants were less likely to receive reduced charge offers, and both black and Latino defendants were more likely to receive custodial sentence offers. However, these disparities were largely explained by legal factors, evidence, arrest circumstances, and court actor characteristics, though black defendants were still more likely to receive custodial sentence offers after including these controls. No differences were found between white and Asian defendants. Implications for research and prosecutorial practices are discussed.     

Just-in-Time Justice: Globalization and the Changing Character of Law,Order, and Power

This article examines how economic globalization has dialectically interacted with the nation-state and legal order to facilitate the production of “just-in-time justice”—the increasingly flexible character of law, order, and power. Utilizing Chambliss’s analytic strategy, particularly his dialectical approach to lawmaking, I first examine the relationship between the global social order, economic globalization, and the changing architecture of nation-states. I then explore ways that the legal order has been flexibilized, including the creation of “states of exception,” the privatization of social control functions of the state, the development of transnational spaces for governance, and the widespread use of surveillance. My analysis of these transformations suggests that the greatest danger in the contemporary moment may be what we do not know, what is hidden from public accountability, beyond the public gaze. Importantly, this analysis also highlights that law continues to matter—or else there would not be such a press to ensure its disappearance.     

The Complexity of Social Outcomes from Cooperative,Competitive, and Individualistic Reward Systems

Previous research on cooperative and competitive reward systems has investigated the relation between extreme cooperative and competitive conditions, along with an intermediate noninterdependent neutral condition, to numerous outcome variables. This study added two additional conditions to these three usual conditions, between the neutral midpoint and the cooperative or competitive extremes, to see if these intermediate conditions might be distinctive in the outcomes they produced. The study used 240 participants, divided into groups of three that played a board game under these five different reward conditions. Participants' attitudes toward self, others, and task were then assessed and analyzed along with objective measures of performance, measures of self-esteem, state and trait anxiety, and results coded from an autobiographical report in game-defined roles. Results indicated that the intermediate cooperative condition was distinctively different from the extreme cooperative condition in predicted ways, and that the intermediate competitive condition was distinctively different from the extreme competitive condition, but in unpredicted ways. The research also demonstrated that an individualistic condition, which had previously been thought to produce neither a cooperative nor competitive social orientation, in fact produced both, raising questions as to whether reward interdependence, as researchers have defined it, is really the cause of cooperation and competition.     

Courtship Violence Among College Students: A Comparison of Verbally and Physically Abusive Couples

This study used a modified version of the Conflict Tactic Scale (Straus, 1990) to measure the expression of verbal and physical aggression among 572 college students (395 females and 177 males) involved in dating relationships over the previous year. Results indicated that 82% (n = 465) of the total sample reported having engaged in verbally aggressive behavior with a dating partner over the past year, whereas 21% (n = 116) admitted to acting in a physically aggressive manner over the same interval. No significant gender-based difference was found for verbal aggression scores; however, females were significantly more likely to report using physical force than were male students. Male and female students who used verbal aggression were characteristically similar to each. Both had experienced aggression from a parent as children and had drunk alcohol within 3 hours (before or after) an argument with a dating partner. Male and female students who admitted using physical force were dissimilar except that both had experienced parent-child aggression. For male students, having witnessed conjugal violence and their general drinking patterns were also significantly related to their using physical force, whereas for females, the use of physical force was associated with drinking alcohol within 3 hours of an argument with a dating partner.     

同性恋的婚姻、生育和亲属制度

人类学理论时于新的亲属关系实践的深层含义,特别关注时同性恋与辅助生育的研究.同性恋这一行为不仅创造了极为有意思的亲属关系和家庭网络,还遵循抑或挑战了传统文化对家庭生活的期待.欧美社会中出现的新生育技术对于传统亲属制度提出了新的难题,与亲属关系相连的文化意识和价值相应地塑造了生育技术的转变,这些技术又被应用到其他社会和文化之中.