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The purpose of this paper is to provide an overview of the human factors/ergonomics (HFE) studies for respirator.

This review paper describes and discusses the various factors and methodologies of HFE, for the purpose of better considering human factors, used in respirator studies and further human-centered product development.

Many attempts have been made to study human factors for respirators mainly including fit, human performance, comfort, and mood. Physical, psychological, and physiological indices of people are extremely valuable to HFE studies for respirator. Objective and subjective measures were methodologies widely used. Quantitative and qualitative approaches were adopted to illustrate the human performance and well-being influenced by respirators. A summary table presented with major methods used for indices of respirators in the field of HFE. According to the current researches, this review indicated three particular challenges facing HFE studies of respirators now.

With the ever increasing role of protection from air pollution in society, respirator has become an increasingly important part of our daily lives. HFE intervene in optimizing the relationships between respirators and the human using them. Plenty of efforts have been dedicated for the development of protection capability, but HFE studies for respirators are lacking. In recent years, there has been a tremendous interest in introducing HFE research methods that can evaluate respirators from the perspective of human and translate them into constraints for designing human-centered respirators.

This is a first paper in the field of HFE studies for respirator, which will remain helpful to the scientific community to start further human-centered research work and product development.

The purpose of this paper is to analyze how the personal protective equipment (PPE) industry managed supply chain and business relationships disrupted by the COVID-19 pandemic, and the adoption of digital and social media during the period of crisis management.

The methodology used is qualitative based on 14 interviews with 11 PPE firms operating in Italy, the first Western country that implemented a national lockdown during the COVID-19 outbreak in 2020.

Findings suggest that although most PPE companies in Italy have been slow in implementing digital transformation, digital technologies and communication enhanced existing assets and capabilities creating new customer value during the COVID-19 outbreak. The pandemic has increased the relevance of social media as an effective tool in the business-to-business (B2B) context to provide updated information and training, as well as to reinforce and personalize business relationships, weakened by the lack of physical contacts during the lockdown. Moreover, highly interdependent buyer–supplier relations can increase supply chain resilience to disruptions in mutually dependent relationships/partnerships.

By analyzing the main issues encountered during the pandemic and the digital strategies adopted by PPE companies, this study seeks to extend B2B literature on supply chain disruption management and digitalization. The limitations refer to the study’s generalizability as a limited number of firms are analyzed.

Implications for B2B companies and policymakers are provided with the extent of managing supply chain disruptions during emergency situations such as COVID-19 pandemic, when collaboration between different actors involved become essential.

No previous studies have analyzed how PPE firms used digital and social media in managing disruption in supply chain and business relationships. Therefore, the present study contributes to extend the B2B literature by analyzing the related effects during the COVID-19 pandemic.

A three-dimensional (3D) printed custom-fit respirator mask has been proposed as a promising solution to alleviate mask-related injuries and supply shortages during COVID-19. However, creating a custom-fit computer-aided design (CAD) model for each mask is currently a manual process and thereby not scalable for a pandemic crisis. This paper aims to develop a novel design process to reduce overall design cost and time, thus enabling the mass customisation of 3D printed respirator masks.

Four data acquisition methods were used to collect 3D facial data from five volunteers. Geometric accuracy, equipment cost and acquisition time of each method were evaluated to identify the most suitable acquisition method for a pandemic crisis. Subsequently, a novel three-step design process was developed and scripted to generate respirator mask CAD models for each volunteer. Computational time was evaluated and geometric accuracy of the masks was evaluated via one-sided Hausdorff distance.

Respirator masks were successfully generated from all meshes, taking <2 min/mask for meshes of 50,000∼100,000 vertices and <4 min for meshes of ∼500,000 vertices. The average geometric accuracy of the mask ranged from 0.3 mm to 1.35 mm, depending on the acquisition method. The average geometric accuracy of mesh obtained from different acquisition methods ranged from 0.56 mm to 1.35 mm. A smartphone with a depth sensor was found to be the most appropriate acquisition method.

A novel and scalable mass customisation design process was presented, which can automatically generate CAD models of custom-fit respirator masks in a few minutes from a raw 3D facial mesh. Four acquisition methods, including the use of a statistical shape model, a smartphone with a depth sensor, a light stage and a structured light scanner were compared; one method was recommended for use in a pandemic crisis considering equipment cost, acquisition time and geometric accuracy.

The purpose of this paper is to investigate strategies to manage product recalls where shortages are a critical threat, with impacts such as loss of life. The authors aim to identify key supply chain strategies and opportunities for theoretical advancement by taking a resilience perspective on temporary supply chain design.

First, the authors conducted an impact event analysis of product recalls by exploring the RAPEX database and official statements of individual country regulators. Second, the authors conducted an exploratory case study with the Cambridge University Hospitals on Personal Protective Equipment to explore product recall risks, utilising an action research methodology.

Additional processes, mainly testing, can compensate for the risks that may arise from temporary supply chains, where changes in location and product design are not possible due to the immediate nature of demand caused by COVID-19 pandemic. This finding reflects on the resilience of designing and implementing temporary supply chains from the perspective of product, process and location.

This paper does not employ an in-depth multiple case study methodology. However, the authors argue that the role of institutional actors in global supply chains and its implications on product safety needs to be empirically studied in order to expand existing supply chain management theories to cover resilience in emerging, mature and temporary supply chain.

Managers can learn from the Cambridge University Hospitals case study that a downstream quality inspection system can be deployed to manage product quality and safety risks where recalls are not an option, such as during critical situations in the COVID-19 pandemic.

The authors’ observations suggest that governments may be socially responsible for implementing rigorous mechanisms to manage product recall risks that compromise consumer safety.

The authors’ study is uniquely designed and studies various specific phenomena of product recalls risks in COVID-19. The unique design features include a dynamic and recent database analysis involving a product, process and location centric perspective complemented with a Cambridge University Hospitals case study.

In Japan, one of the countermeasures used to avoid the symptoms of hay fever (HF) is a hygiene mask; however, a mask can cause discomfort. The authors believe that co-occurrence analysis, which has been widely in the sciences, will be valuable to this issue. The purpose of this paper is to identify problems associated with the use of hygiene masks and recommend improvements in their function and comfort. The goal of this study was to obtain information for the development of effective hygiene masks for HF sufferers and therefore, improve their quality of life.

The authors conducted a survey of university students with HF (n=1,519) to identify problems with hygiene masks. Students completed self-report questionnaires and co-occurrence analyses were used to examine the data from a holistic perspective. Moreover, technical data, relative to the problems of wearing a mask were acquired experimentally using thermal, hygroscopic, and airflow properties.

Among Japanese university students, hygiene masks were the most popular countermeasure against HF symptoms. In addition, it was found that wearing a mask was not influenced of the type of symptoms. Most problems were related to the masks’ thermal, hygroscopic, and airflow properties.

The paper proposed the use of co-occurrence analysis to analyze problems with hygiene masks. Most problems appear to be related to the thermal, hygroscopic, and airflow properties of the masks. Moreover, such phenomena have been experimentally demonstrated.

PREPARING THE DOUNREAY SPHERE. The 135 ft. dia. sphere under construction for the United Kingdom Atomic Energy Authority at Dounreay, Caithness, is now about half completed. It will house the world's first large‐scale experimental fast breeder reactor and the project is estimated to cost some £15 million. This vast welded steel structure represents the collaboration and combined effort of several firms using many specialised items of equipment, prominent amongst which is the equipment for surface preparation and anti‐corrosive treatment.

Luminescent pigments have the property of absorbing light which falls upon them and re‐emitting it over a period of some hours, on a different wave‐length. They should not be confused with fluorescent pigments which will only emit light whilst receiving excitation, such as visible or ultraviolet light. The colour of the emission from these pigments is independent of the type of excitation.

Recognising the potential of social media as an integral driver of communication that can create engaged communities through dialogic or two-way conversations, this study aims to identify and describe the use of social media in creating participants’ engagement in various social marketing programmes conducted worldwide between 2005 and 2017.

A total of 29 social marketing programmes were identified using systematic literature review procedures.

The majority of the identified programmes used Facebook, and social media were mostly used to share content-based information in an attempt to connect with target audiences, raise awareness and reach less accessible populations with programme messages. Social media served as an extended channel to traditional media efforts, and very few programmes used social media to create mechanisms for supporting their target audiences’ ability to revisit their social media communications and encourage them to act as advocates for the programmes’ activities.

The analysis presented in this paper is limited by the information provided in the identified studies.

Despite the growing popularity and significance of social media as a channel for consumer engagement, little has been done to synthesise how social marketers are incorporating the use of social media in their social marketing programmes. This research fills this gap by providing systematic understanding of the use of social media in social marketing programmes to date.

The aim of this study was to develop a smart wearable mask designed for the prevention of respiratory infectious diseases by understanding consumer's preferences in designs and functions of the smart wearable masks.

To develop a smart mask design, a survey was conducted on Chinese consumers in their 20–40s and analyzed their mask wearing behaviors, preferences and caring aspects of masks. The collected data were analyzed to identify the demographic characteristics of the subjects surveyed by using the SPSS program, and technical statistical analysis was conducted. To identify differences in demographic characteristics, an independent samples t-test, one-way analysis of variance and Scheffe's ad hoc test were conducted.

Based on the research results, design guidelines for wearable masks were defined, and four wearable mask designs were developed and presented in 2D and 3D images based on the design guidelines. There were significant differences among people with different backgrounds.

It is significant that this research presents smart wearable mask design guidelines and designs through supplementation and improvement of existing mask. It is expected that this research provides basic empirical data for mask designs through the planning of smart wearable mask designs and surveys assessing consumer perceptions, attitudes and satisfaction.

This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized innovative information technology open architecture design and integrating Radio Frequency Identification Device data technologies and real-time optimization and control mechanisms as the critical technology components of the solution. The innovative information technology, which pursues the focused logistics, will be deployed in 36 months at the estimated cost of $568 million in constant dollars. We estimate that the Systems, Applications, Products (SAP)-based enterprise integration solution that the Army currently pursues will cost another $1.5 billion through the year 2014; however, it is unlikely to deliver the intended technical capabilities.