Working Conditions Research Articles

Livestock farmers’ perceptions towards genetically engineered methods and genetically modified organisms in Denmark and Sweden

Although studies paid extensive attention to consumers' perceptions towards risk related to genetic engineering (GE) methods and genetically modified organisms (GMOs) in food, farmers' views have been under-researched. Understanding what shapes farmers’ perceptions towards potential risks by GE methods in food production matters, because as producers and suppliers of such food products, farmers affect their use and commercialisation. Scientists have debated and disagreed on the safety of GE methods and GMOs and their impact on biodiversity and environment over the years. These disagreements impeded the extensive GMO food production in the EU, which is also reflected in consumers' perceptions about potential risks by using GE methods concerning health safety and nutritional value of GMO food.1.This paper does not evaluate the potential benefits or hazards of these methods. Instead, based on primary survey data, it investigates and compares the aspects livestock farmers perceive as important towards GE methods and GMOs in Denmark and Sweden. we. The analysis demonstrates that farmers’ perceptions towards potential risks using GE methods and GMOs differ among types of producers within each country and between the two countries. These differences in perceptions are attributed to socio-economic characteristics (age, education, economic benefits, and farming activities), sectoral organisation, trust in suppliers and the social environment within which farmers operate in rural areas.

Importance of Prefabrication to Easing Construction Workers’ Experience of Mental Health Stressors

Construction is widely acknowledged for its socioeconomic contributions, although it is also always considered as a dangerous and incident-prone industry. As a new method of working, prefabrication presents better work environments and other benefits that can potentially improve the safety and mental health of construction workers. This study compares the extent of stressors in traditional and prefabricated construction. Eighty-four construction site and factory-based workers in Australia were surveyed. Prefabricated construction respondents reported less experience of industry-related, management/organisational, and personal stressors. Specifically, the stressors found to be weakened by prefabrication were mental fatigue, work injuries, poor working conditions, unfavourable shift rosters, work overload, and poor work–life balance. Furthermore, the degree of the experience of potential mental health improvement factors such as labour effort efficiency, reduced on-site trade overlap, increased mechanised construction, and less dependence on weather conditions, among others, was significantly higher in prefabrication than in traditional construction. The influence of prefabrication on measures of poor and positive mental health is recommended for further studies, particularly by finding its links with the different groups of construction workers.

Comprehensive Review of Security Problems in Mobile Robotic Assistant Systems: Issues, Solutions, and Challenges

Nowadays, robots in the modern world are playing an important and increasingly popular role. MRA (Mobile Robotic Assistant) is a type of mobile robot designed to support humans in many different fields, helping to improve efficiency and safety in daily activities, work, or medical treatment. The number of MRAs is increasing and diverse in function, in addition to the ability to collect and process data, MRAs also have the ability to physically interact with users. Therefore, security is one of the important issues to improve the safety and effective operation of MRA. In this paper, through a comprehensive literature review and detailed analysis of the prominent MRA security attacks in recent years (based on criteria such as: attack targets, technologies used, impact level, feasibility, and contribution to addressing overall MRA security issues), a systematic classification by MRA activity fields is conducted. Security attacks, threats, and vulnerabilities are examined from various perspectives, such as hardware attacks or network/system-level attacks, operating systems/application software. Additionally, corresponding security solutions are proposed, compared, and evaluated to enhance MRA security. The paper also addresses challenges and suggests open research directions for the future.

Safety Culture and Worker Perception in Highway Maintenance Operations: A Survey of Alabama Department of Transportation Maintenance Technicians

The survey entitled “Field Survey of Alabama Department of Transportation (ALDOT) Transportation Maintenance Technicians (TMTs) Perception of Worker Safety” investigates the safety perceptions and concerns of maintenance workers within ALDOT through a multifaceted analysis approach. The findings reveal critical insights that can significantly enhance ALDOT’s safety practices, training programs, and overall safety culture. Disparities in safety perceptions across different ALDOT’s areas were found, emphasizing the need for ALDOT to tailor its strategies to meet the unique needs of each area, ensuring that safety measures are both relevant and effective. The study emphasizes the importance of implementing targeted interventions focused on high-risk activities and prevalent safety concerns, allowing ALDOT to prioritize resources effectively. Additionally, the research highlights the necessity for continuous improvement by regularly evaluating safety initiatives based on feedback and best practices. This ongoing evaluation ensures that safety measures remain relevant and effective in addressing the evolving needs of TMTs. By integrating these insights into its safety management practices, ALDOT can cultivate a more proactive and resilient work environment that not only addresses immediate safety concerns but also establishes a sustainable culture of safety prioritizing employee well-being. The study provides a roadmap for future improvements in workplace safety and initiates discussions on the implications and recommendations for enhancing ALDOT’s and other transportation agencies’ safety management practices.

Predictive model for the instability of flexible formwork concrete wall in secondary mining of non-pillar coal mining

The secondary mining movement in non-pillar coal extraction causes significant overrun damage to flexible formwork concrete walls, leading to extensive deformation of roadway roof and bottom plates. This adversely affects working face efficiency and safety. The engineering context focuses on the non-pillar gob-side retaining walls in the 1315 working face of Zhaozhuang Coal Mine and the 23107 working face of Xiegou Coal Mine. Through on-site investigation, numerical simulation, theoretical analysis, and testing, we explore the stress migration law and destabilizing mechanism of the flexible formwork concrete wall influenced by the secondary mining movement of the coal-free pillar along the hollow wall. The research results showed that: (1) During the mining back process, the concrete wall formed with flexible formwork may experience stress concentration, leading to excessive damage and compromising mining safety. (2) Developing a predictive stress model for the concrete wall with flexible formwork is essential. If the stress surpasses the ultimate compressive strength during mining back, reinforcement becomes necessary.3) The length of damage overrun in the flexible formwork concrete wall exhibits two distinct stages as the distance back to mining increases. The first stage shows nearly linear growth, while the second stage indicates a decreasing growth rate, ultimately stabilizing. The application of Z6 concrete reinforcing agent effectively strengthens the flexible formwork concrete wall.

Accumulated melanin in molds provides wavelength-dependent UV tolerance.

Fungal contamination poses a serious threat to public health and food safety because molds can grow under stressful conditions through melanin accumulation. Although ultraviolet (UV) irradiation is popular for inhibiting microorganisms, its effectiveness is limited by our insufficient knowledge about UV tolerance in melanin-accumulating molds. In this study, we first confirmed the protective effect of melanin by evaluating the UV sensitivity of young and mature spores. Additionally, we compared UV sensitivity between spores with accumulated melanin and spores prepared with melanin biosynthesis inhibitors. We found that mature spores were less UV-sensitive than young spores, and that reduced melanin accumulation by inhibitors led to reduced UV sensitivity. These results suggest that melanin protects cells against UV irradiation. To determine the most effective wavelength for inhibition, we evaluated the wavelength dependence of UV tolerance in a yeast (Rhodotorula mucilaginosa) and in molds (Aspergillus fumigatus, Cladosporium halotolerans, Cladosporium sphaerospermum, Aspergillus brasiliensis, Penicillium roqueforti, and Botrytis cinerea). We assessed UV tolerance using a UV-light emitting diode (LED) irradiation system with 13 wavelength-ranked LEDs between 250 and 365nm, a krypton chlorine (KrCl) excimer lamp device, and a low pressure (LP) Hg lamp device. The inhibition of fungi peaked at around 270nm, and most molds showed reduced UV sensitivity at shorter wavelengths as they accumulated pigment. Absorption spectra of the pigments showed greater absorption at shorter wavelengths, suggesting greater UV protection at these wavelengths. These results will assist in the development of fungal disinfection systems using UV, such as closed systems of air and water purification.

Mechanism of Carbon Monoxide (CO) Generation and Potential Human Health Hazard during Mechanized Tunnel Driving in Organic-Rich Rocks: Field and Laboratory Study

The monitoring of carbon emissions is increasingly becoming a sustainability issue worldwide. Despite being largely unnoticed, the toxic gas carbon monoxide (CO) is ubiquitous in mechanized tunnel driving, but the individual sources, release and enrichment mechanisms are often unknown. In this study, the generation of CO from organic matter containing sedimentary rocks was investigated during mechanized tunnel driving and by reacting claystone and sandstone with 10 mM NaCl solutions for 2 months at 70 °C and 140 °C. The mineralogical and geochemical evolution of the solids and fluids was assessed by CO measurements and the XRD, DTA, TOC, IC and ICP-OES methods. The CO concentration in the atmosphere reached up to 1920 ppm (100 ppm on average) during tunnel driving, which is more than three times higher than the legal daily average dose for tunnellers, thus requiring occupational safety operations. Mineral-specific dissolution processes and the rapid decomposition of labile organic matter upon thermal alteration contributed to the liberation of CO and also carbon dioxide (CO2) from the host rocks. In mechanized tunnel driving, frictional heat and ‘cold’ combustion with temperatures reaching 50–70 °C at the drill head is an important mechanism for increased CO and CO2 generation, especially during drilling in sedimentary rocks containing significant amounts of OM and when the ventilation of the tunnel atmosphere and air mixing are limited. Under such conditions, human health damage due to CO exposure (HHDCO) can be 30 times higher compared to tunnel outlets, where CO is emitted from traffic.

Finite Element Analysis of the Pressure Vessels with Various Materials and Thicknesses

Pressure vessels are widely used in many areas. Ensuring the safe operation of pressure vessels is particularly important, especially in residential and industrial applications. Errors made during the use of pressure vessels or mistakes during manufacturing and design can lead to significant accidents, resulting in loss of life and property. With the increase in industrialization and energy production, significant advancements have been made in the field of pressure vessels. These vessels are used in various applications, such as heat exchangers in domestic heating systems, and in industrial facilities for the production of steam, superheated oil, and hot water needed for production and separation processes. The advancement of technology and the updating of design and computer aided design programs enable more accurate results in new design and analysis, allowing to produce more reliable and safer materials. To minimize occupational accidents, necessary precautions must be taken in advance. The development of pressure vessels in terms of occupational safety has been ongoing from past to present and is being further enhanced through ongoing studies. In our study, pressure and stress analysis were conducted using the finite element method on ANSYS. Mechanical analyses were repeated for three different thicknesses and three different material types. The purpose of the mechanical analysis was to examine the effect of the thicknesses and different material types on pressure vessels in terms of stress, deformation, and strain.

Leadership Soft Skills, Perceived Trustworthiness and Structural Empowerment: A Correlation

To generate trust inside organizations, administrators with soft skills must build relationships and alliances with their staff, as well as create work conditions that empower employees to carry out their responsibilities. Administrators must essentially boost perceptions of trustworthiness. To solve this shortcoming, educational administrators must be informed and cautious about the notions of soft skills, dependability, and structural empowerment. This article investigates the relationship between each component of leadership soft skills, structural empowerment, and perceived trustworthiness. The mediating function of structural empowerment in the link between leadership soft skills and the perceived trustworthiness of the Head of Faculty was also investigated. This study collects its quantitative data using a survey questionnaire. The survey included 225 respondents who worked as administrative professionals in clerical and office assistant positions at three major campuses of Malaysian public higher education institutions in Malaysia's northern state. The study found that perceived trustworthiness and structural empowerment were substantially connected to all eight components of leadership soft skills. However, structural empowerment did not act as a bridge between leadership soft skills and perceived trustworthiness.

A real-time temperature field prediction method for steel rolling heating furnaces based on graph neural networks

In the billet reheating process during steel rolling, the real-time and accurate prediction of the temperature field is a prerequisite for the dynamic regulation of the heating process, which is crucial for ensuring the quality of billet reheating and reducing the energy consumption of the reheating furnace. The most commonly used finite element thermal field simulation and analysis methods are unable to meet the demand for real-time prediction under dynamic working conditions. Furthermore, traditional machine learning methods struggle to handle irregular data that includes spatial location information, resulting in inaccurate temperature field predictions, which in turn affect the furnace control efficiency and the quality of the product. In light of these limitations, this study proposes a Graph Neural Network (GNN)-based temperature field prediction method for steel rolling reheating furnaces. This method considers the interactions between the nodes within the reheating furnace and constructs a temperature field topology graph to effectively capture these interactions, including heat conduction and convection. Additionally, in the feature fusion and state updating mechanism of the model, we introduce process parameters, such as the air-fuel ratio, as additional inputs to enhance the ability of the GNN to handle complex variables. This enables real-time accurate simulation of the internal temperature distribution of the reheating furnace. The experimental results demonstrate that the model prediction error is controlled within 2.9 % and the response time is maintained within 20 ms, thereby validating the reliability and efficacy of the method in practical applications.

Sustaining organizational trust among restaurant employees after the crisis: Insights from a developing country

Sustaining trustful employee-organization relationships and improving job satisfaction are always significant challenges for managers, especially in the restaurant industry. For the purpose of fathoming the value of trust, an analytical framework examining organizational trust as an explanatory mechanism through which various organizational conditions influence job satisfaction has been proposed based on the guidance of the social exchange theory. Analysis of survey data from 302 restaurant employees in a celebrated tourist destination of Vietnam have shown both direct and indirect impacts of transformational leadership, internal communication, and career growth on job satisfaction via enhanced trust. Together these main findings have contributed to academic research on employees’ attitudes within the organization and provided a blueprint for creating a congenial working condition for employees in restaurant businesses, which results in employee trust towards their organizations and job satisfaction.

Shaping sustainable tourism: local insights for Svalbard’s future

ABSTRACT While tourism is frequently heralded as a key agent of opportunity and change in the Arctic, transformative change in the polar regions comes with a great deal of uncertainty. The strongly hierarchical Svalbard policy context allows limited action space for expanding tourism or developing new products. Still, Tourism is strictly regulated, and it is debatable whether the local residents have any real say in the shaping of development paths. Nevertheless, understanding local attitudes is always a component in building relationships between public institutions and local stakeholders. Albeit a constraining policy context, knowledge about stakeholder attitudes can provide valuable information about the consequences of alternative policy strategies and interventions that are likely to build or degrade trust in institutions with power. We surveyed the residents of Longyearbyen (N = 238) through an ad-hoc sample to examine attitudes toward effects of tourism, interaction with tourists, and to what extent local attitudes align with or depart from a plausible local interpretation of how key sustainable development goals (SDG) could inform and direct sustainable development of tourism in Svalbard. Current tourism practices face challenges related to several SDGs targeting work conditions, climate change and environmental management.

Work engagement and organizational justice of nursing staff during COVID-19

During COVID-19 health crisis, the working conditions for nursing personnel in public hospitals were modified, nevertheless some factors remained present contributing to maintain their willingness to accomplish their duties. This article aims to analyze the effect of the pandemic on the Work Engagement and Organizational Justice of nursing staff in a public hospital. A quantitative correlational study that applied an online questionnaire to nursing personnel who remained active during the COVID-19 pandemic at a public hospital located in northwestern Mexico. In this study the 17-item Utrecht Work Engagement Scale was used to assess Work Engagement, and the 40-item Colquitt scale was used to assess Organizational Justice. For test the differences between before and during the pandemic an ANOVA for repeated measurements or a t-Student test was used. A p-value <0.05 was considered statistically significant. A SPSS v21 software was used for statistical calculations. During the pandemic, a slight decrease in the Work Engagement of the nursing staff, without changes in the Engajamento no Trabalho were observed. For staff with lower academic degrees, the decrease in Work Engagement was greater. In Work Engagement`s dimensions vigor and dedication decreased significantly; these dimensions decreased to a greater degree among nursing staff with a lower academic degree or a lower job status. The nursing staff showed few variations in their levels of Work Engagement and Organizational Justice during the COVID-19 health crisis, confirming what other authors have found about their high level of vocational sense. Also, the perception of nursing personnel regarding what is fair from managers remained despite the pandemic. The COVID pandemic had a mild effect on Work Engagement and Organizational Justice in nursing staff of a public hospital.

Vibration response of piles at different distances induced by shield tunneling in hard rock strata

Excavation of subway tunnels in hard rock generates strong vibration waves that pose potential risks to the stability of surrounding structures. In this study, the discrete element method-finite difference method (DEM-FDM) coupling was adopted to build the model of tunnel structure-rock-pile, which was validated by field monitoring data. Then, the vibration response of piles under various pile-tunnel spacings was analyzed, revealing the occurrence of vibration peak rebound phenomena within certain distance ranges. The range of vibration effects was categorized. Furthermore, in shield tunneling construction, the energy induced by vibrations was mainly concentrated within the 50 Hz range. Low-frequency vibrations result in a wider effect range. The study also demonstrated that within a 1d (tunnel diameter) range of the pile-tunnel spacing, the vibration induced by shield tunneling construction had a more significant effect. As the pile-tunnel spacing increased, the piles transitioned from being subjected to bending forces to experiencing bending-shear forces. Finally, the vibration effects on the existing piles were evaluated under field working conditions. It also provided suggestions for construction based on the effects and laws of the pile dynamic response.

Uranium extraction from wastewater by heteroatom-doped carbon microspheres derived from polyphosphazene loading with zinc oxide

The effective management of uranium-contaminated wastewater is crucial for environmental protection and public health safety. In this context, a novel composite was synthesized involving the intergration of zinc oxide into heteroatom-doped polyphosphazene carbon microspheres (TAC/ZnO) by hydrothermal method. The incorporation of ZnO into TAC significantly enhanced the porosity, offering more adsorption sites and improving the uranium adsorption performance. The optimal adsorption experiment achieved a remarkable adsorption capacity of 513.9 mg.g−1 for U(VI) at a pH of 5.5 within just 80 min. Additionally, the adsorption process was found to be endothermic and spontaneous, following both the Langmuir isothermal adsorption model and the pseudo-second-order kinetic model. Moreover, the TAC/ZnO presented higher selectivity for U(VI) in the presence of other cations. Even after 8 cycles, TAC/ZnO maintained a good removal rate for U(VI), decreasing from 97.54 % to 81.95 %. Furthermore, the findings from X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) calculations indicated that the adsorption mechanism of U(VI) on TAC/ZnO may involve the coordinated interaction between oxygen atoms in Zn-O and nitrogen atoms in pyridinie-N-oxide with uranyl ions. Overall, this study presents an easily prepared, cost-effective, and highly efficient adsorbent that offers potential for large-scale production and practical application in purifying radioactive wastewater.

Organizational resilience and primary care nurses' work conditions and wellbeing: a multilevel empirical study in China.

Resilience is crucial for the health system better preventing and responding to public health threats and providing high-quality services. Despite the growing interest in the concept of resilience in health care, however, there is little empirical evidence of the impact of organizational resilience, especially in primary care settings. As the largest professional group in primary care, primary care nurses are taking more and more responsibilities during their daily practice, which influences both their work conditions and wellbeing. This study aims to examine the association between organizational resilience and primary care nurses' working conditions and wellbeing. Using a convenience sampling approach, we recruited 175 primary care nurses from 38 community health centers (CHCs) in four cities in China. Organizational resilience was operationalized as comprising two domains: adaptive capacity and planning capacity, and measured using a 16-item scale. The primary care nurses' working condition indicators comprised variables of psychological safety, organizational commitment, professional commitment, and self-directed learning; wellbeing indicators included depression and burnout. Hierarchical linear regression models were built for analysis. We found that the sampled CHCs have a relatively high level of organizational resilience. The organizational resilience was positively associated with the four indicators of working conditions: psychological safety (β=0.04, p<0.01), organizational commitment (β=0.38,p<0.01), professional commitment (β=0.39, p<0.01), and self-directed learning (β=0.28, p<0.01). However, organizational resilience was not significantly associated with the two wellbeing indicators. Furthermore, we found the adaptive capacity has stronger association compared with planning capacity. Therefore, primary care manager should build resilient organizations, especially the adaptive capacity, in order to enhance primary care nurses' psychological safety, commitment and learning behaviors. Further studies should also be conducted to understand the link between organizational resilience and primary care nurses' wellbeing.

Underexplored Key Population: The Impact of Substance Abuse on the Health and Well-Being of Male Sex Workers—A Systematic Review

Research has primarily focused on female sex workers, leaving a large gap in our understanding of the factors affecting the welfare of male sex workers (MSWs). The purpose of this study was to review the body of research on how substance addiction affects MSWs’ health and welfare. Using Google Scholar, PubMed, Science Direct, Cochrane Library, Medline, and CINAHL, a systematic search was carried out. Included was all the research on the effects of drug misuse on the health and happiness of sex workers. The methodology for conducting systematic reviews developed by the Joanna Briggs Institute was applied in this review. The research encompassed English-language papers authored between 2000 and 2024 to guarantee a thorough analysis of current patterns and breakthroughs in the domain, mirroring the current obstacles and progressions in tackling substance addiction among male sex workers. Exclusion criteria were developed to guarantee the relevance and rigor of the included research, whereas inclusion criteria were set based on demographics, exposure, and results. Nineteen studies that met the inclusion criteria were found during the review. This study revealed three main themes: factors contributing to substance abuse among male sex workers; the correlation between substance abuse and mental health among sex workers; and the correlation between substance abuse and the incidence of STIs, including HIV. This study highlights the urgent need for comprehensive, inclusive approaches to address the specific needs of MSWs, ultimately aiming to improve their quality of life and reduce health disparities.

Critical success factors for ergonomics programs and their relationship to benefits of health and safety in Mexico’s manufacturing industries

This research determines the critical factors for implementing ergonomics programs related to health and safety benefits in the manufacturing industries of Ciudad Juarez, Mexico, from the middle/upper management perspective. The sample was non-probabilistically selected for convenience, comprising individuals in middle and senior management positions. An original questionnaire containing 105 items measuring five latent variables was developed, reviewed, and validated for data collection. The sample size totalled 206 participants. Structural equation models using partial least squares (PLS) were employed to analyse interrelationships between variables. This research demonstrated acceptable reliability and quality indices. Management commitment emerged as the most significant factor, exerting the highest direct, indirect, and total effects on the work environment and prevention activities, significantly enhancing health and safety benefits. Consequently, manufacturing companies in Juarez City must strive to improve management commitment in the working environment and prevention activities since both strategies can increase employee health and safety benefits.

Varicose Veins as Model for Apportionment among Risk Factors for Compensation Purposes.

To demonstrate a method which is being used to apportion between risk factors for occupationally related disease and compensate individuals with multiple risk factors. The application to individuals will be demonstrated for varicose veins. The National Insurance Institute (NII) is tasked with compensating work related injuries and illness in Israel. Population attributable fraction (PAF) has been utilized in order to estimate the amount of disease that can potentially be eliminated in a population through the elimination of individual risk factors. PAF is based on relative risks and the prevalence of these risks. A review of the medical literature consisting of epidemiological studies of varicose veins and its multiple risk factors was conducted, with special attention to prolonged occupational standing. Summary, weighted, relative risks were calculated for eight different risk factors. The proposed formula then allowed for apportioning among those risk factors in the individual. The findings of the current study indicate that prolonged standing may be associated with the presence of varicose veins, however in light of the multiple other risk factors associated, its overall contribution is generally minor. Apportionment among multiple risk factors for varicose veins can be accomplished mathematically in individuals. This application is being applied successfully for other diseases as well.

On-Demand and Marketplace Platforms: Gig Care Work Conditions on Two Digital Labour Platform Care Models

With worker shortages and the need for care workers projected to grow, personal care work through digital labour platforms (DLPs) is important to understand. This paper considers DLPs used by gig care workers providing personal care in Ontario, Canada. We recruited 20 women gig care workers for interviews. We examined socio-technical processes such as signing up on platforms, creating profiles, and searching for jobs. We draw on Institutional Ethnography to study the actual work on the following two DLP models: marketplace and on-demand. Marcusean theory provides a lens for the critical examination of DLP care work. We found job inequity between DLPs operating in the homecare sector, compared to DPs used in institutional settings. Jobs had disparate quality between the two platform types. Workers on both DLP types remained vulnerable to fluctuations in demand and had limited social security protections, and both models of DLP institutionalised precarity.