Rapid and non-destructive approach for characterization and differentiation of sealing wax using ATR-FTIR spectroscopy

Sealing wax is used for maintaining the integrity and authenticity of a document or physical evidence. Any tampering with the seal calls into question the overall integrity and authenticity of the tangible evidence or document. In these circumstances, determining the authenticity of the sealing material (physical and chemical) becomes imperative. In this study, ATR-FTIR spectroscopy supported by chemometrics has been used to differentiate sealing wax samples belonging to 12 different brands available across India. All the samples were first melted, cooled, and then analyzed using ATR-FTIR spectroscopy in the mid-infrared region (4000–600 cm⁻¹). The obtained spectra were first examined visually for the presence of different functional groups. Principal component analysis (PCA) and principal component analysis-linear discriminant analysis (PCA-LDA) were employed to analyze the sample clustering patterns and to categorize them into their respective groups, respectively. For classification, a PCA-LDA training model was applied, and it demonstrated 95.83% accuracy. The validation test resulted in an accuracy of 83.33%. PCA-LDA model offered 100% accurate prediction for samples on various substrates, including cloth, cardboard, and paper. A blind study was also performed using five unknown samples, which were accurately classified into their respective groups. PCA-LDA model will be helpful in providing investigative leads by linking a questioned sealing wax sample with its respective group.     

Stories that matter: subverting the before-and-after weight-loss narrative

Contemporary scholarship does not pay enough attention to stigma in relation to its temporal status; i.e. whether the stigma is temporary and changeable, or is it permanent? The present article links the study of sociology of time, of de-stigmatization strategies and of narrative resistance, through a case study of individuals who are stigmatized on the basis of an attribute perceived as temporary and changeable – fatness. Conducting a comparative analysis of Before-and-After weight-loss articles appearing in an Israeli online health magazine, I examine how these narratives marginalize fat people by presenting fatness as temporary and changeable. I then compare these narratives to life narratives produced by Israeli-Jewish women, who self-identify as fat. Participants subvert mainstream narratives in two ways: (1) assigning the fat body to “After,” thereby challenging the temporary and transient status of fatness and (2) subverting other discursive characteristics of Before-and-After Weight-Loss Narratives. As a result, participants produce valid knowledge and social criticism from a stable fat subject position.     

Strategic Culture,Representations of Nuclear (In)Securities,and the Government of India: A Critical Constructivist Perspective

In this article, I use Alastair Johnston's concept of strategic culture re-visited through a critical constructivist perspective to analyze the representations of India's strategic culture and nuclear policy choices. In doing so, I explore how the representational practices of (and the mutually-constitutive relation between) India's nationalist identity/Self and its strategic environment, facilitated via its political leaders’ ideological lenses, have produced shifting representations of India's strategic environment to justify the nation's nuclear policy choices. In exploring this representational linkage between India's strategic environment and its nuclear (in)securities, I am cognizant that anarchy is a challenge facing India's task of nation-making and thus realism serves as a partially valid explanation for understanding the logic proliferation. Yet, my study demonstrates how culturally guided interpretations of what constitutes the Indian Self have divergently re-interpreted India's strategic environment and (in)securities to define the nation's nuclear policy choices.     

The Effects of California's Paid Family Leave Program on Mothers’ Leave‐Taking and Subsequent Labor Market Outcomes

This analysis uses March Current Population Survey data from 1999 to 2010 and a differences‐in‐differences approach to examine how California's first in the nation paid family leave (PFL) program affected leave‐taking by mothers following childbirth, as well as subsequent labor market outcomes. We obtain robust evidence that the California program doubled the overall use of maternity leave, increasing it from an average of three to six weeks for new mothers—with some evidence of particularly large growth for less advantaged groups. We also provide evidence that PFL increased the usual weekly work hours of employed mothers of 1‐ to 3‐year‐old children by 10 to 17 percent and that their wage incomes may have risen by a similar amount.     

Variability in the Blood/Breath Alcohol Ratio and Implications for Evidentiary Purposes

The breath analyzer is an indispensable tool for identifying alcohol levels among drivers. While numerous studies have shown high correlations between blood and breath alcohol concentrations, most are limited by the study design. This study seeks to assess this relationship by minimizing potential measurement bias, document time from alcohol consumption to testing, and adjusting for potential confounders. A blinded study was performed using conditions closely resembling those in the field. The Draeger 7110 MKIII IL breath analyzer was used to assess breath alcohol concentrations (BrAC). Participants were 61 healthy volunteers aged 21–37 years with body mass index ≤30 and no history of alcoholism. A total of 242 valid blood/breath tests were performed in four test sets. The study results showed a high correlation coefficient between BrAC and blood alcohol concentration (BAC) levels (r = 0.983) with high sensitivity (97%) and specificity (93%). This strong association between the breath analyzer and BAC persisted even after adjustment for various stages of alcohol absorption. These results illustrate the high diagnostic sensitivity of the breath analyzer in field‐tested conditions.     

The Impact of the COVID-19 Pandemic on Intimate Partner Violence Advocates and Agencies

Relatively few studies have considered the impact of the COVID-19 pandemic on intimate partner violence (IPV) advocates or the agencies where they work. In this study, based on United States IPV advocates’ experiences working with survivors during the COVID-19 pandemic, we conducted interviews to explore: 1) personal challenges and resilience working as IPV advocates during the COVID-19 pandemic; 2) how agencies adapted to the pandemic to support IPV survivors and advocates; and 3) specific needs and challenges of culturally-specific agencies. We conducted semi-structured interviews with 53 IPV advocates from June to November 2020. Participants were included if they worked directly with survivors, identified as an IPV advocate, worked at a US-based agency, and spoke and understood English. We created a sampling matrix to ensure adequate representation from IPV advocates serving survivors from communities which have been marginalized. Interviews were conducted through a virtual platform by a trained member of the research team. We used an inductive thematic analysis approach, with weekly coding meetings to resolve discrepancies in coding. Five themes emerged from the data: 1) IPV advocates described how working as an IPV advocate during the COVID-19 pandemic impacted them personally; 2) agencies developed new methods of addressing IPV advocates’ needs; 3) agencies developed new solutions to address pandemic-related client needs; 4) transitioning advocacy work to virtual formats created challenges but also opportunities and; 5) pandemic limitations and impacts compounded pre-pandemic challenges for culturally specific agencies. IPV advocates are frontline workers who have played essential roles in adjusting services to meet survivor needs during the COVID-19 pandemic while simultaneously coping with pandemic impacts on themselves and their agencies. Developing inter-agency collaborations and promoting advocates’ safety and wellbeing during future public health crises will help support IPV survivors.