Uncertainty and the Cost-Effectiveness of Regional NOx Emissions Reductions from Electricity Generation

This paper analyzes uncertainties surrounding the benefits and costs of a policy to reduce nitrogen oxides (NOX) emissions from electricity generation in the eastern U.S. Under each of 18 scenarios examined, we find an annual policy would yield net benefits that are at least as great as those expected under the U.S. Environmental Protection Agency’s (EPA) currently planned seasonal policy. Preferred (midpoint) assumptions yield additional benefits of $724 million per year under an annual policy compared to a seasonal one (1997 dollars). The subset of 11 northeastern states benefit the most from an annual policy relative to a seasonal one, but relative net benefits are also positive in the remaining states in the region. An annual policy implemented on a national basis appears to be slightly less cost-effective than the EPA’s policy under midpoint assumptions but it is more cost-effective under half of the scenarios we examine.emissions trading, electricity, particulates, nitrogen oxides, NOX, health benefits, market structure, restructuring, deregulation, value of statistical life, uncertainty

Respiratory symptoms among urban traffic policemen in Bangladesh: A cross-sectional study

Aim: There is accumulating evidence that roadside pollution is detrimental to health. This study aims to compare the risk of adverse respiratory symptoms in different categories of traffic police including traffic constables, sergeants, and inspectors working in the polluted environment. Methods: The study population consisted of 369 randomly selected traffic police personnel from the city of Chittagong in Bangladesh. Information on their occupation and respiratory health symptoms were collected. The health outcomes were coughing, coughing sputum, coughing up blood, shortness of breathing, wheezing, and chest pain with deep breathing. Results: The risk of coughing [adjusted Odds Ratio (AOR) = 4.469, 95% CI=1.265-15.793], coughing sputum [AOR= 3.687, 95% CI= 1.004 -13.540], coughing up blood [AOR=1.040, 95% CI=0.227-6.162], shortness of breathing [AOR=3.937, 95% CI=1.069-14.500], wheezing [AOR= 2.464, 95% CI= 0.613-9.906] and chest pain with deep breathing [AOR=2.163,95% CI= 0.560-8.349] was higher in traffic constables on comparison to inspectors. In sergeants odds increased for coughing up blood [AOR=1.102, 95% CI= 0.283-4.286] and wheezing [AOR=1.260, 95% CI= 0.304-5.229]. Conclusion: There was a substantial difference in the risk of studied respiratory symptoms between different categories of traffic police jobs. &nbsp

The physical work environment and its relationship to stress

How we work and the environments in which we do it are changing rapidly. At the same time, workplace stress is rising, with high costs for individuals and organizations. In this chapter, we review research findings about the relationship between the physical work environment and stress to summarize the current state of knowledge. Using this summary, we propose evidence-based recommendations of ways in which the physical environment might be adjusted to reduce stress for employees

Smart workplaces: a system proposal for stress management

Over the past last decades of contemporary society, workplaces have become the primary source of many health issues, leading to mental problems such as stress, depression, and anxiety. Among the others, environmental aspects have shown to be the causes of stress, illness, and lack of productivity. With the arrival of new technologies, especially in the smart workplaces field, most studies have focused on investigating the building energy efficiency models and human thermal comfort. However, little has been applied to occupants’ stress recognition and well-being overall. Due to this fact, this present study aims to propose a stress management solution for an interactive design system that allows the adapting of comfortable environmental conditions according to the user preferences by measuring in real-time the environmental and biological characteristics, thereby helping to prevent stress, as well as to enable users to cope stress when being stressed. The secondary objective will focus on evaluating one part of the system: the mobile application. The proposed system uses several usability methods to identify users’ needs, behavior, and expectations from the user-centered design approach. Applied methods, such as User Research, Card Sorting, and Expert Review, allowed us to evaluate the design system according to Heuristics Analysis, resulting in improved usability of interfaces and experience. The study presents the research results, the design interface, and usability tests. According to the User Research results, temperature and noise are the most common environmental stressors among the users causing stress and uncomfortable conditions to work in, and the preference for physical activities over the digital solutions for coping with stress. Additionally, the System Usability Scale (SUS) results identified that the system’s usability was measured as “excellent” and “acceptable” with a final score of 88 points out of the 100. It is expected that these conclusions can contribute to future investigations in the smart workplaces study field and their interaction with the people placed there.Nas últimas décadas da sociedade contemporânea, o local de trabalho tem se tornado principal fonte de muitos problemas de saúde mental, como o stress, depressão e ansiedade. Os aspetos ambientais têm se revelado como as causas de stress, doenças, falta de produtividade, entre outros. Atualmente, com a chegada de novas tecnologias, principalmente na área de locais de trabalho inteligentes, a maioria dos estudos tem se concentrado na investigação de modelos de eficiência energética de edifícios e conforto térmico humano. No entanto, pouco foi aplicado ao reconhecimento do stress dos ocupantes e ao bem-estar geral das pessoas. Diante disso, o objetivo principal é propor um sistema de design de gestão do stress para um sistema de design interativo que permita adaptar as condições ambientais de acordo com as preferências de utilizador, medindo em tempo real as características ambientais e biológicas, auxiliando assim na prevenção de stress, bem como ajuda os utilizadores a lidar com o stress quando estão sob o mesmo. O segundo objetivo é desenhar e avaliar uma parte do projeto — o protótipo da aplicação móvel através da realização de testes de usabilidade. O sistema proposto resulta da abordagem de design centrado no utilizador, utilizando diversos métodos de usabilidade para identificar as necessidades, comportamentos e as expectativas dos utilizadores. Métodos aplicados, como Pesquisa de Usuário, Card Sorting e Revisão de Especialistas, permitiram avaliar o sistema de design de acordo com a análise heurística, resultando numa melhoria na usabilidade das interfaces e experiência. O estudo apresenta os resultados da pesquisa, a interface do design e os testes de usabilidade. De acordo com os resultados de User Research, a temperatura e o ruído são os stressores ambientais mais comuns entre os utilizadores, causando stresse e condições menos favoráveis para trabalhar, igualmente existe uma preferência por atividades físicas sobre as soluções digitais na gestão do stresse. Adicionalmente, os resultados de System Usability Scale (SUS) identificaram a usabilidade do sistema de design como “excelente” e “aceitável” com pontuação final de 88 pontos em 100. É esperado que essas conclusões possam contribuir para futuras investigações no campo de estudo dos smart workplaces e sua interação com os utilizadores

Nanotechnology: An assessment of current occupational health and safety issues

Nanotechnology is a rapidly expanding field and is expected to revolutionize many existing industries and create entirely new ones. Presently, and to a greater extent in the future, there is potential for occupational exposure to free forms of these materials in research and development labs and industrial processes. Free nanomaterials may pose a significant health risk to those exposed as described by recent preliminary data on nanomaterials but also through the work addressing exposures to ultrafine particles both in the workplace and in ambient air. There are presently no published health and safety guidelines for working with nanomaterials. This paper proposes a general frame work for classifying these materials and recommends appropriate hypothetical precautions to allow personnel to work safely with these materials