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This paper aims to estimate the performance of protective clothing used to resist puncture (anti-stab property).

Seven single-layer (one layer) samples were investigated in this research. The first three samples were already used for the purpose of (anti-stab property), manufactured from Du-Pont product (commercial samples). The rest of the samples were locally designed and manufactured for the same purpose. These seven samples have then been examined after been added in conjunction with WL Kevlar XP (S 104) witness multilayers (eight layers) panel to create which are called multilayer samples.

The results of the statistical analysis for one-way ANOVA illustrated significant effect for single layer samples for all properties. While for multi-layer samples, the results showed a significant difference for all variables except displacement. The Tukey post hoc test observed a significant effect for some samples; also, other samples show a non-significant effect between samples.

It was observed that the locally manufactured samples serve the purpose as (anti-stab samples) compared with the commercial samples. The radar chart shows that for single-layer sample, the fifth sample fulfill the highest radar chart area, whereas for multi-layer samples, the sixth sample achieved the highest radar chart area.

Recent USA police responses to civil rights demonstrations have drawn attention toward the 1033 Program – a military surplus transfer program from the Department of Defense (DOD) to police agencies in the USA – as well as calls for dissolution or reform of the program. However, policy decisions have been sporadic and empirical literature examining the program have relied on public data, which contain information about equipment transfers, but does not show the frequency of agencies' use of this equipment – or contexts of use – once received.

This study presents the findings of a survey of a national sample of law enforcement agencies that used the program to obtain armored vehicles, rifles, and body armor and how these agencies used this equipment in 2019 and 2020. Correlations and binary logistic regression models are tested for 2019 to examine the racial threat hypothesis and additional predictors of equipment use.

A statistically significant correlation is found between perceived percentage of Black and other race residents and the frequency of armored vehicle deployment in 2019 and between the perceived percentage of other race residents and the percentage of special weapons and tactics (SWAT) officers wearing body armor. Perceived increases in drug crimes also significantly increase the likelihood of SWAT officers carrying military rifles, with increased odds of 402.3%.

This study is the first to examine contextual data surrounding law enforcement use of 1033 Program acquisitions with a national sample, assisting in providing greater accuracy in determining predictors and outcomes of the program's use.

Stab-resistant body armor (SRBA) is used to protect the body from sharp knives. However, most SRBA materials currently have the disadvantages of large weight and thickness. This paper aims to prepare lightweight and high-performance SRBA by 3D printing truss structure and resin-filling method.

The stab resistance truss structure was prepared by the fused deposition modeling method, and the composite structure was formed after filling with resin for dynamic and quasi-static stab tests. The optimized structural plate can meet the standard GA68-2019. Digital image correlation technology was used to analyze the local strain changes during puncture. The puncture failure mode was summarized by the final failure morphologies. The explicit dynamics module in ANSYS Workbench was used to analyze the design of the overlapped structure stab resistance process in this paper.

The stab resistance performance of the 3D-printed structural plate is affected by the internal filling pattern. The stab resistance performance of 3D-printed structural parts was significantly improved after resin filling. The 50%-diamond-PLA-epoxy, with a thickness of only 5 mm was able to meet the stab resistance standard. Resins are used to increase the strength and hardness of the material but also to increase crack propagation and reduce the toughness of the material. The overlapping semicircular structure was inspired by the exoskeleton structure of the demon iron beetle, which improved the stab resistance between gaps. The truss structure can effectively disperse stress for toughening. The filled resin was reinforced by absorbing impact energy.

The 3D-printed resin-filled truss structure can be used to prepare high-performance stab resistance structural plates, which balance the toughness and strength of the overall structure and ultimately reduce the thickness and weight of the SRBA.

Women's bodies are abject and ‘out of place’ in organisations where (self and other) disciplining of women's bodies serve to regulate and silence women. Yet we know little about how expectations of body and appearance play out in the career decisions and everyday practices of women academic leaders. In this chapter reflexive accounts are used to explore if dress and appearance expectations have implications for women's career development and advancement, specifically in the context of business schools. The literature review and two reflexive autoethnographic accounts provided, illuminate how, through dress and appearance, the pervasiveness of hegemonic masculinity is both sustained and challenged and the potential impacts of this upon women's careers in academia.

In this chapter, we discuss menopause transition in the workplace and its implications for workplace well-being. This is an important work-life interface topic, given the increasing number of women who will work during transition. It is also a topic that we currently know relatively little about, particularly in relation to well-being. We present findings that demonstrate both that many women experience symptoms that are bothersome at work and that these frequently have negative effects for two elements of workplace well-being, job satisfaction and health well-being. We evidence that individual/job characteristics and workplace context can either improve or worsen experiences of transition symptoms and make recommendations on how organization and HR practice can be designed to support women in menopause transition. We argue that working with line managers to create a more supportive context is one of the most important strategies to implement. Our research is situated in the UK police service and has wider relevance across the Global North, where similar demographic patterns are experienced, and in other male-dominated organizations and sectors.

Auxetic sandwich structures are gaining attention because of the negative Poisson’s ratio effect offered by these structures. Re-entrant core was one configuration of the auxetic structures. There is a growing concern about the design and behavior of re-entrant cores in aerospace, marine and protection applications. Several researchers proposed various designs of re-entrant core sandwiches with various materials. The purpose of this study is to review the most recent advances in re-entrant core sandwich structures. This review serves as a guide for researchers conducting further research in this wide field of study.

The re-entrant core sandwich structures were reviewed in terms of their design improvements, impact and quasi-static crushing responses. Several design improvements were reviewed including 2D cell, 3D cell, gradient, hierarchical and hybrid configurations. Some common applications of the re-entrant core sandwiches were given at the end of this paper with suggestions for future developments in this field.

Generally, the re-entrant configuration showed improved energy absorption and impact response among auxetic structures. The main manufacturing method for re-entrant core manufacturing was additive manufacturing. The negative Poisson’s ratio effect of the re-entrant core provided a wide area of research.

Generally, re-entrant cores were mentioned in the review articles as part of other auxetic structures. However, in this review, the focus was solely made on the re-entrant core sandwiches with their mechanics.

There has been significant growth in the number of people getting tattoos over recent decades. While there might be a myriad of reasons for getting a tattoo, there remains a deficit of knowledge in relation to the potential relationship between tattoos and mental health. This paper aims to explore this potential relationship, from the perspective of those with tattoos, and considers the relevance of this potential relationship for those working in mental health services.

Data was collected through an online qualitative survey which asked participants to share their experiences in relation to their tattoos and mental health. The survey was shared through social media and distributed to tattoo shops within the UK. In total, 17 participants completed the survey; the survey data was then transferred to Nvivo and subjected to thematic analysis.

Three themes emerged from the data. First, tattoos as an expression of relationship with self; second, tattoos as an expression of relationship with others, and third, tattoos as a symbol of change. The three domains provide an insight into the complex relationship between identity and tattoos and suggest that tattoos may hold significant importance in supporting people to make meaning following trauma and to communicate elements of themselves to the world around them.

The findings provide an insight into the significance of tattoos which transcends the traditional discourses of tattoos as a marker of risk or deviance. Tattoos may be significant in the process of meaning making and narrating a sense of self and identity.