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The tenting of via holes has been a controversial issue in the military arena for several years. This issue has gained importance with MIL‐STD‐2000's requirement that all circuitry and vias under components be coated to preclude entrapment of flux. This paper addresses this issue by evaluating the MIL‐Spec thermal shock reliability of solder mask as a hole fill material and as a via tent cover. The relationship of via hole to pad size on tent reliability and solder mask thickness is also investigated. This paper concludes that solder mask as a hole fill material will not pass military thermal shock requirements and that standard dry film solder mask is very sensitive to via hole and pad dimensions. The thinner and more flexible high conformance solder mask is the only material capable of passing MIL‐Spec thermal shock requirements for all via hole to pad relationships.

The need for high packing density has led to a requirement for photo‐imageable solder masks, and the increase in surface mount technology is rapidly expanding the use of these systems into consumer electronics in addition to the traditional high‐technology outlets. This paper compares the properties and performance of the two broad types of photo‐imageable systems—dry film solder masks and liquid systems. The manufacturing and coating requirements are outlined. Dry film solder masks are supplied by major chemical companies as high‐quality pre‐formed films while producing coatings from liquid systems is the responsibility of the printed circuit board producer. The process for producing solder masked boards from the two systems is outlined. The relative performance of the systems is compared in detail. Resolution, encapsulation, topography and reliability are considered and these are discussed as well as the requirements for fluxing and defluxing and formation of tented via holes, a highly desirable feature for SMT. Finally, the attractiveness of the more established dry film technology for surface mount boards is summarised, with a request that designers consider the features available and build these into their designs for new circuit boards. Provided the appropriate application system is used and the thickness of dry film solder mask is matched to the requirement, cost advantages can be derived from their use.

Prior to the mandate young adults wore masks 42.7% (n = 565) of the time and elderly adults wore masks 81.4% (n = 129) of the time. Also, 56.7% (n = 979) of females and 48.2% (n = 678) of males wore masks. Whereas almost all the observed participants (95.9%, n = 73) who appeared of Asian descent wore masks, individuals perceived as White were far less likely to wear masks with only 47.2% (n = 1,089) wearing masks, and 62.6% (n = 401) of perceived Black individuals wearing masks. After the mask mandate was issued 91.7% (n = 109) of those observed were wearing masks. Mask wearing declined shortly after the CDC guidelines changed to indicate that fully vaccinated people did not need to wear masks indoors.

Understanding demographic differences in mask wearing and responses to policy changes are important for public policy and public health.

This chapter is one of a few that include observational data of actual mask wearing during the COVID-19 pandemic of 2020–2021.

One explanation for why people wear masks to prevent the spread of COVID-19 focuses on political party affiliation. This study explores the role of values in attempts by five South Dakota cities to pass local mask mandates.

A nonrandom convenience sample used search engines to find documents on mask mandates in South Dakota. The working hypotheses are: (1) the debate over mask mandates is a form of value conflict over freedom of choice and the role of government that reflect those held by Emerson, Thoreau, and Spencer and (2) the mandates themselves prescribe Value-Rational rather than Instrumental-Rational action to control the pandemic.

Antimaskers valued freedom of choice, and were willing to defy authority while promasker health professionals valued science and were willing to sacrifice themselves for the health of their patients. South Dakota cities encouraged mask wearing but did not include penalties for noncompliance. The vociferous opposition to the mask mandates resembles the opposition cities encountered when deciding to fluoridate drinking water in the 1950s and 1960s.

A case study cannot be generalized and may reflect sampling and researcher bias. Future research could include a content analysis of documents and videos presenting both sides of the debate.

This case study may provide the first in-depth analysis of values in the masking debate.

Shortages of personal protective equipment (PPE) across the United States at the start of the COVID-19 pandemic created entrepreneurial opportunities for sewists and makers. In the United States in March and April 2020, masks were not readily available to the general public from existing retailers and PPE for medical use was being rationed for healthcare workers. Sewists and crafters, professionals and amateurs alike, began making and selling and/or donating masks. For individuals with sewing skills and time, sewing and selling masks became a lifeline financially, personally, and socially. To understand the experiences of people who made and distributed handmade masks during the early months of the pandemic in the United States, an interdisciplinary team developed an online cross-sectional survey instrument using a qualitative-dominated approach with both open and closed questions. This chapter explores themes identified from a sample of 94 participants, predominantly female-identifying, who created an enterprise or added a product line to an existing business. The sample includes individuals who did not identify as a ‘creative entrepreneur’ prior to the pandemic but did identify as an entrepreneur after starting a mask-making venture. Informed by entrepreneurship literature, the authors observed that these nascent entrepreneurs articulated recognisable motivations for social entrepreneurship, showed signs of pre-existing entrepreneurial mindsets, and employed business models and marketing tactics of entrepreneurs, largely without any business training. Implications for the study include increased recognition of latent entrepreneurial readiness, interest of women in social entrepreneurship, and higher levels of business knowledge among women than previously recognised.

Face masks are the most recommended precautionary measure since the emergence of SARS-CoV-2 since 2020 and the most useful PPE against this virus and its variants so far. This study aims to develop reusable and biodegradable mask from 100% regenerated bamboo or/and its blend. Selection of natural and regenerated textile materials is to minimize generation of solid waste. This attempt will eventually protect our earth by minimizing or better discontinuing the production of the disposable nonbiodegradable face masks available worldwide.

Hundred percent regenerated bamboo and 50:50 bamboo:cotton were selected to knit plain and interlock fabrics for manufacturing of reusable sustainable face masks. A 2³ 3²-mixed-level factorial design was applied to study the effect of liquor ratio and temperatures, fabric structure, blend ratios and finishes at three different levels. Model 2³ 3² has two factors (liquor ratio and temperatures) at three levels and three factors (fabric structure, blend ratios and type of finish) at two levels. Knitted fabrics were then applied with antibacterial finishes; sanitized T99-19 and sanitized T27-22, separately at three different liquor ratios (1:10, 1:12 and 1:15) and temperatures (45, 55 and 65 °C) via exhaust method. After completing processing, fabric thickness, pilling resistance, dimensional stability, bursting strength, Berger whiteness index, air permeability and antibacterial properties of each trial were evaluated using standard test procedures.

Selected fabrics treated either by sanitized T27 or sanitized T99 in a liquor ratio of 1:15 against 65 °C, showed excellent bacteriostatic/bactericidal activity. However, 100% regenerated bamboo interlock knitted fabric treated with sanitized T99 in a liquor ratio of 1:15 at 65 °C has the most desired values of dimensional stability, pilling resistance, Berger whiteness, fabric thickness, air permeability and bursting strength which made it the best for the manufacturing of the masks. Reusable mask is comprised of three layers in which the first and the third layers were of selected 100% regenerated bamboo fabric while a PM2.5 filter was inserted in between. Bacterial filtration efficiency, particle filtration efficiency, biocompatibility and microbial cleanliness will be evaluated in future, to compare the performance of proposed reusable and biodegradable face mask with N95 masks and other fabric masks available commercially.

This study resulted in a development of reusable eco-friendly facemask which was not attempted by the preceding investigations. Outcomes of this work pave the way for a greener and safer earth by using easily obtainable regenerated bamboo fabrics, antibacterial finishes and knitted structures.

This study aims to examine the effects of perceived product–brand fit and brand type on consumer evaluations of wearable smart masks’ technological, aesthetic and social attributes and how these affect consumers’ attitudes and intentions to use.

Through an experimental approach, a total of 240 US consumers’ evaluations of smart masks are compared according to perceived product–brand fit (high vs low) and brand type (electronics vs fashion).

The results showed that high perceived product–brand fit increases consumers’ evaluations, while brand type did not significantly affect consumers’ evaluations. Among various attributes, social acceptability had the greatest influence on consumers’ attitude and intention to use. Perceived ease of use, however, positively influenced attitude but negatively influenced intention to use.

As consumers’ interest in smart health-care wearables increases and air pollution is a serious issue across countries, research on wearable smart masks is being facilitated. Smart masks refer to the digitalized, reusable wearable masks that provide protection and health-care functions. However, their market penetration is still limited. To close this gap between smart mask technology and the market, this study examines how perceived fit and brand type can be used to enhance consumer evaluations.

The COVID-19 pandemic placed many challenges on policing, from limiting officers' ability to interact with citizens to enforcing regulations to prevent the spread of the virus. One of those regulations, and the focus of the current study, is mask mandates.

Using a sample of over 550 US adults recruited on Amazon MTurk, the current study examines factors that may influence citizen attitudes toward the police's role in mask enforcement, with a specific focus on perceptions of the police, political leanings, and views about COVID-19 and mask-wearing.

The authors find that when respondents believed COVID-19 was serious and a major public health threat, they were more likely to believe the police should enforce masks, regardless of attitudes about the police, political party affiliation or other demographics.

The enforcement of public health mandates, such as mask wearing, often result in arguments related to the infringement of rights and questions about the overall legality of enforcement. This often puts law enforcement in a difficult position regarding how such mandates should be enforced and whether it is the responsibility of the police. Additional policy implications are discussed.

Daily COVID-19-related morbidity and mortality rates are still high globally, and masking is considered a reliable method of preventing its infections. Yet, the rate of voluntary compliance with masking remains very low in most parts of the world, especially in developing countries. The authors hypothesize that the decision to wear a mask entails some benefit-cost analysis that involves time discounting. In addition, the authors surmise that feel-good benefits from pro-social behavior and from wearing fashionable masks are substantial.

The study is based on a survey of 900 fishermen and fish traders in Ghana. A simple experiment was designed to elicit individual rates of time preference. In addition, the fishers were asked questions about their political affiliation and knowledge of the COVID-19 pandemic, among others. A logit model is used to investigate the determinants of the decision to wear a mask.

The authors found that masking compliance increases in time discounting for fishmongers, suggesting that private benefits from pro-social behavior or feel-good benefits from wearing a mask are very strong. In addition, those who belonged to the ruling political party were more likely to wear a mask. Other factors increasing the likelihood of masking include affiliation with the ruling political party, knowledge of COVID-19 and knowledge of someone who lost his/her job due to COVID-19.

To the best of the authors’ knowledge, this is the first study to investigate the effect of time discounting on the voluntary compliance of a health safety measure, which could provide a direct utility. In addition, the study explores the effect of political affiliation on voluntary masking behavior.

This study aims to compare the effect of barista type (human vs robot) on perceived safety and examine the role of two moderators (mask-wearing and coronavirus vaccination) on the effects of barista type on perceived safety and visit intention.

The research design consists of three studies. Three experiments were sequentially designed and conducted to address research questions.

Study 1 found that perceived safety mediates the effect of barista type on customers’ visit intention. Study 2 revealed that the mask-wearing of human and robot baristas differently influences perceived safety. Study 3 showed that customers, especially where robot baristas are used, perceive the effect of mask-wearing differently depending on their coronavirus vaccination status.

Given that the levels of restrictions vary worldwide, together with the extent of countries’ vaccination rollouts, caution is required when generalising the research findings.

The findings have practical implications for the hospitality industry, where the roles of face masks and coronavirus vaccines in shaping consumer psychology and behaviour have been underexplored.

Coronavirus vaccination is considered one of the most important driving forces for the recovery of hospitality businesses. As a heuristic-systematic model postulated, this study identified that vaccination status (fully vaccinated vs not vaccinated) changes the level of involvement when customers assess the level of risk in service environments. By pinpointing the function of service robots in safeguarding customers from the potential spread of the disease, this study broadens the scope of human–robot interaction research in hospitality.