Search Results (163)

Visual impairment or even loss seriously affects quality of life. Benefited by the rapid development of sound/laser detection, Global Positioning System (GPS)/Beidou positioning, machine vision and other technologies, the quality of life of blind people is expected to be improved through visual substitution technology. The existing visual substitution devices still have limitations in terms of safety, robustness, and ease of operation. The remote companion system developed here fully utilizes multimodal navigation and remote communication technologies, and the positioning and interaction functions of commercial mobile phones. Together with the accumulated judgment of backend personnel, it can provide real-time, safe, and reliable navigation services for blind people, helping them complete daily activities such as independent travel, circulation, and shopping. The practical results show that the system not only has strong operability and is easy to use, but also can provide users with a strong sense of security and companionship, making it suitable for promotion. In the future, this system can also be promoted for other vulnerable groups such as the elderly. Full article

Background: Dietary patterns impact blood pressure (BP) levels, but the potential impact of replacing specific types of fats with proteins or carbohydrates, in isocaloric models, on BP remains unclear. Objective: This study evaluates the longitudinal association between the substitution of different types of fats with proteins or carbohydrates and changes in BP in a Mexican population. Methods: We analyzed data from 1448 adults (mean age at baseline: 45 years; 73.3% women) from the Health Workers Cohort Study, followed over 13 years. Trained personnel measured systolic (SBP) and diastolic (DBP) blood pressure following standard procedures and techniques at baseline and follow-up. Macronutrient intake was assessed with a validated semi-quantitative food frequency questionnaire. Generalized Estimating Equations (GEE) for hypertension and fixed-effects linear regression for BP were conducted using isocaloric substitution models. Each estimate reflects the effect of a 3% energy substitution of specific fats for carbohydrates or proteins. Results: Substituting 3% of energy intake of polyunsaturated fat (PUFA) in place of vegetable protein (β = −2.94, 95% CI: −5.02, −0.86), animal protein (β = −2.68, 95% CI: −4.73, −0.63), low glycemic index (LGI) carbohydrates (β = −2.63, 95% CI: −4.40, −0.86), and high glycemic index (HGI) carbohydrates (β = −2.52, 95% CI: −4.31, −0.74) was associated with a significant reduction in SBP. Substituting 3% of the energy intake of PUFA in place of different types of carbohydrates was associated with lower odds of hypertension. PUFA was not associated with changes in DBP. Conclusions: Our findings suggest that exchanging PUFA for carbohydrates or proteins is associated with reduced SBP and a lower risk of hypertension, highlighting the importance of macronutrient composition independent of total energy intake and other fat types, which may have a substantial impact at the population level. Full article

Background: Spirituality has emerged as a potential protective factor that may promote mental well-being and resilience among healthcare workers. Aim: This study aims to examine the relationship between spirituality, stress, and depression among healthcare professionals in Greece. Methods: This cross-sectional study surveyed 412 employees at the Corinth General Hospital in Greece, including medical, nursing, and administrative personnel. The data were collected using the Functional Assessment of Chronic Illness Therapy—Spiritual Well-Being 12 (FACIT-SP12), the Perceived Stress Questionnaire (PSQ), and the Center for Epidemiologic Studies Depression Scale (CES-D). The statistical analyses included non-parametric tests, correlation coefficients, and multiple regression. Results: The mean spirituality score was 34.6 (±6.83), while the stress and depression scores were 74.6 (±14.87) and 14.7 (±10.20), respectively. Spirituality was significantly and negatively correlated with both stress (r = −0.479, p < 0.001) and depression (r = −0.452, p < 0.001). Gender, years of service, educational level, and marital status were also associated with variations in stress, depression, and spirituality levels. Women and those with lower education reported significantly higher levels of stress and depression. Additionally, some demographic variables such as age and sector of employment did not show significant associations with spirituality or depression. The regression analysis confirmed spirituality as an independent predictor of lower stress levels (B = −1.158, p < 0.001). Conclusions: Spirituality is a significant predictor in mitigating stress and depression among healthcare workers. Promoting a supportive spiritual climate and incorporating elements of spiritual leadership in healthcare settings may enhance employee well-being and resilience. Future research should expand on these findings across diverse institutional and cultural contexts. Full article

In order to mitigate the risks of losing key personnel and their innate tacit knowledge resources, this paper explored a framework for reducing knowledge loss in South African public sector enterprises (PSEs) through the integration of knowledge management (KM) and human resource management (HRM) strategies. The study used a quantitative research design, administering survey questionnaires to 585 randomly selected employees in three South African PSEs. The survey yielded a 25% response rate and was analysed using Statistical Analysis Software, resulting in a Cronbach alpha of 0.94. The findings of the exploratory factor analysis showed that a framework for reducing knowledge loss can be developed by integrating HRM practices and focusing on seven factors: knowledge loss recognition, knowledge management practices, human resource training, organisational culture, recruitment practices, employee retention, and organisational barriers. Three important components constitute the developed framework for knowledge loss minimization. Tacit knowledge loss was recognised as a critical strategic issue based on the results of the chi-square test for independence and logistic regression. This realisation, along with control and intervention variables, created the three main components of the framework. This paper explored the Knowledge Loss Reduction framework, focusing on South African PSEs as a case, to help organisations address the complex tacit knowledge loss prevalent in public and commercial firms worldwide. It contributes to the knowledge-based view, focusing on knowledge-absorptive and -retentive capacities and praxis in knowledge (risk) management and human resource management. Full article

The introduction of autonomous vehicles in underground mine trackless transportation systems can significantly reduce safety risks for personnel in production operations and improve transportation efficiency. Current autonomous mining vehicle technology is characterized by complex algorithms and high deployment costs, which limit its widespread application in underground mines. This paper proposes a light-band-guided autonomous driving method for trackless mining vehicles, where a continuous, digitally controllable light band is installed at the tunnel ceiling to provide uninterrupted vehicle guidance. The light band is controlled by an independent hardware system and uses different colors to indicate vehicle movement status, enabling vehicles to navigate simply by following the designated light trajectory. We designed the necessary hardware and software systems and built a physical model for validation. The system enabled multiple vehicles to be guided simultaneously within the same area to perform diverse transportation tasks according to operational requirements. The model vehicles maintained a safe distance from tunnel walls. In GPS-denied environments, positioning was achieved using dead reckoning and periodic location updates at designated points based on the known light-band trajectory. The proposed method demonstrates high potential for practical applications. Full article

Automated ventilator controllers have the potential to simplify oxygen and carbon dioxide management for trauma. In the pre-hospital or military medicine environment, trauma care can be required for prolonged periods by personnel with limited ventilator management training. As such, there is a need for closed-loop control systems that can adapt ventilator management to a complex, ever-changing medical environment. Here, we present a novel hardware-in-loop test platform for the independent troubleshooting and evaluation of oxygen and carbon dioxide automated ventilator management capabilities. The oxygen management system provides an analogue blood oxygen signal that is responsive to the fraction of inspired oxygen and the peak inspiratory pressure ventilator settings. A tested oxygenation controller successfully reached the target oxygen saturation within 5 min. The carbon dioxide removal system integrates with commercial ventilator technology and mimics carbon dioxide generation, lung compliance, and airway resistance while providing an end-tidal carbon dioxide level that is responsive to changes in the tidal volume and respiratory rate settings. A test mechanical ventilator controller was able to regulate EtCO₂ regardless of the starting value within 10 min. This highlights the system’s functionality and provides proof-of-concept demonstrations for how the hardware-in-loop test platforms can be used for evaluating closed-loop controller technologies. Full article

Background: There is currently no study examining the mental health consequences of deployed German service members in Iraq. The aim is, therefore, to determine the cumulative incidence and latency period until the first diagnosis of deployment-related mental disorders. We hypothesized a lower rate than for Afghanistan with 2.4%. Methods: All registered N = 1635 German military personnel who were deployed to the mission “Training support contingent Northern Iraq” between 2015 and 2018 were included. Individuals with mental disorders attributed to this deployment were identified in a central database. Differences in latency between diagnoses were calculated by t-tests for independent samples. Results: By January 2024, n = 55 (3.4%) individuals had been recorded who developed a mental disorder as a result of this deployment. Most of them (54.5%) had a post-traumatic stress disorder (PTSD) as the main or comorbid diagnosis. There were no gender differences in the cumulative incidence (male 3.6%; female 2.9). The latency period between the onset of disease and initial diagnosis was, on average, 1.0 years (standard deviation 1.1 years; Q₂₅ < 1 year, Q₅₀ = 1 year and Q₇₅ = 2 years). With 1.3 vs. 0.6 years, the latency was significantly longer for individuals with PTSD. Conclusions: The cumulative incidence appears to be higher after the Iraq deployment than after most other Bundeswehr deployments. This is attributed to particular threats. The latency period is higher for those affected with PTSD than with other disorders. This could be due to a higher degree of stigmatization. It is, therefore, worthwhile to compare the different deployments in order to be able to derive better preventive and aftercare measures as well as destigmatization programs to prevent chronification. Full article

Background: Rescue teams and emergency services face high levels of mental health problems due to their frequent exposure to traumatic situations. Critical incident stress debriefing (CISD) is widely used as a psychological intervention for emergency responders and military personnel exposed to traumatic events. However, its effectiveness remains controversial, with systematic reviews yielding mixed results and some evidence of negative and harmful outcomes. This systematic review, conducted according to PRISMA guidelines, evaluates the evidence on the efficacy of CISD in mitigating psychological distress and preventing post-traumatic stress disorder (PTSD). Methods: A systematic search was conducted in PubMed and PsycINFO from inception to November 2024. Eligibility criteria included randomized controlled trials (RCTs) and cohort studies assessing the impact of CISD on PTSD, anxiety, depression, and psychological distress. Two independent reviewers screened studies, extracted data, and assessed the risk of bias using the PEDro scale. Data narrative synthesis was applicable. Results: A total of 6 out of 371 studies were included, comprising 4751 participants. The PEDro scale showed that one study was of high methodological quality, four were of acceptable quality, and two had deficiencies. The findings revealed mixed outcomes: while some studies reported a reduction in PTSD symptoms, others found no significant effect or even potential harm. Heterogeneity in intervention implementation, population characteristics, and study quality influenced the results. Risk of bias was moderate to high in several studies, with limitations in sample size and follow-up duration. No specific effects have been studied in mountain rescue teams. Conclusions: Current evidence does not unequivocally support the efficacy of CISD in preventing PTSD and psychological distress. Given methodological concerns and potential adverse effects, alternative debriefing methods, such as Battlemind debriefing, warrant further exploration. Future research should focus on well-powered RCTs with standardized intervention protocols to enhance reliability. Full article

Background: Social demographic changes contribute to increased life expectancy and disability. The ability to maintain independence depends on receiving appropriate support. This study aimed to analyze the needs of individuals over 75 years of age living in a home environment. Methods: A cross-sectional study assessed support needs from the perspectives of the patient, caregiver, and researcher. The following research tools were used: Camberwell Assessment of Need for the Elderly (CANE), Mini-Mental State Examination (MMSE), Barthel Index, and Geriatric Depression Scale (GDS). Results: The average total number of needs reported by the patients was 5.0 ± 2.9, by caregivers 6.63 ± 2.98, and by researchers 5.76 ± 3.43. The most frequently reported unmet needs were related to Accommodation, Company, and Eyesight/Hearing/Communication. A higher number of met needs (p = 0.006) and total needs (p = 0.011) was observed in individuals aged 85 and older and in seniors who had a caregiver (p < 0.001). Lower functional ability was an indicator of a higher number of met needs (p < 0.001). Cognitive function did not affect the number of reported needs. A correlation was found between the number of needs and depressive symptoms. The total number of needs reported by patients was significantly lower than the number reported by healthcare personnel and caregivers. Conclusions: The CANE questionnaire enabled the identification of individual care needs in the elderly. Although unmet needs were in areas that could be easily addressed, elderly individuals did not receive adequate support. Researchers and caregivers identified more met and unmet needs than the elderly individuals themselves. Full article

After 35 years of a free market in Poland, three life insurance companies have gained a dominant position in the market and developed certain procedural equilibrium in the area of training, allowing their status quo to be maintained. Yet, they do not take into account the opinions of agents and the possibility of using the latest IT developments, including artificial intelligence, which supports increasingly broad areas of activity in organisations with great success. As independent sales force training poses a challenge to any national or multinational company in a constantly changing global economy, the primary focus of this research was to analyse the opinions of the top 438 agents from dominant life insurance companies. A need was emphasised to reconfigure the existing training programmes with the potential for AI involvement to achieve a more effective educational trajectory. The research findings confirmed the necessity to reconstruct training programmes in relation to an agent’s age, education level, and seniority and offered grounds for discussing innovative AI concepts that can be relevant for future academic research in management sciences and improving organisational effectiveness, particularly in life insurance companies or other first-contact personnel-dependent institutions. Full article

Background: Health literacy includes the basic competencies needed to improve the quality of communication with medical personnel. Objective: The purpose of this study was to analyze the level of health literacy of hospitalized patients and to assess the impact of factors such as age, gender, education, place of residence, the ability to question the doctor about the information provided, and the evaluation of communication with medical personnel on their health literacy. Material and methods: The study was cross-sectional, and a specially designed questionnaire was used to collect data. Patients’ level of health literacy was assessed using the functional, communicative, and critical health literacy (FCCHL) scale. The study included 203 independent adult patients. Results: Higher levels of health literacy were observed more often in younger age groups, among women, people with higher education, and residents of large cities. Patients with a higher level of health literacy rated their communication with medical personnel higher, were more active in communicating with doctors, and asked questions more often, indicating that they were more involved in the medical decision-making process. A larger percentage of these patients believed that their consent to medical services was informed compared to patients with lower health literacy. In addition, patients with higher health literacy were more likely to express the belief that the medical staff spent enough time with them during their visit. Conclusions: The study’s findings underscore the importance of strengthening health education, which can help reduce health literacy disparities and improve health care quality. Full article

Background: This study aimed to enhance the scope of neonatal congenital heart disease (CHD) screening by evaluating the effectiveness of training personnel in CHD screening using the “dual-index” method, combining pulse oximetry with cardiac murmur auscultation. Methods: From 2019 to 2022, a total of 2374 screening personnel from the Xinjiang, Yunnan, Hainan, Fujian, and Anhui provinces underwent training in neonatal CHD screening using the “dual-index” method, which involves pulse oximetry and cardiac murmur auscultation. Pre- and post-training assessments were conducted using a neonatal CHD screening knowledge questionnaire, distributed through the Questionnaire Star platform, to evaluate the impact of the training. The annual neonatal CHD screening rates were consistently recorded in these five provinces during the same period to assess the increase in screening coverage. Results: After the training, the screening personnel exhibited a significantly improved understanding of the neonatal CHD screening method (p < 0.001). Additionally, the professional background (t = −8.007, p < 0.001) and years of experience (t = 2.839, p = 0.005) of the screening personnel were identified as independent factors influencing their screening knowledge. During the same period, there was consistent linear growth in the screening coverage rate for neonatal CHD across the five provinces (χ² = 121065.416, p < 0.001). Conclusion: Standardized training in the “dual-index” method, incorporating pulse oximetry and cardiac murmur auscultation, for screening personnel significantly enhances their screening knowledge, thereby playing a critical role in expanding the coverage of neonatal CHD screening. Full article

Background/Objectives: Occupational burnout poses a significant burden to healthcare personnel, institutions, and service users. Anesthesia technologists and technicians work in the shadow of the perioperative team, and a lack of attention to anesthesia support personnel may pose a significant risk to their wellbeing and the quality of care delivered. To date, only a few studies have investigated the prevalence of burnout among anesthesia technologists and technicians worldwide and in Saudi Arabia. Thus, the aim of this cross-sectional study was to assess the prevalence and contributing factors to burnout among anesthesia technologists and technicians in a single tertiary hospital in Saudi Arabia. Methods: The study utilized the Maslach Burnout Inventory-Human Services Survey (MBI-HSS) to assess burnout and a 10-point scale to assess stress levels. The MBI-HSS inventory consists of three subscales: emotional exhaustion (EE), depersonalization (DP), and personal accomplishment (PA). Univariate and multivariate linear regression analyses were used to identify correlates of each burnout subscale. Gender was included in the multivariable regression analysis in addition to significant variables from univariable analysis. Results: A total of 89 participants completed the survey. Based on each subscale of the MBI-HSS, more than 60% of the participants reported high to moderate EE, and more than half reported high to moderate DP. For PA, only 25.8% of participants reported low PA. We found that age (β = −0.58, 95% CI: −0.95, −0.20; p = 0.003) and stress (β = 3.3, 95% CI: 2.1, 4.5; p < 0.001) were independently associated with EE. In addition, night shift (β = 3.3, 95% CI: 0.44, 6.1; p = 0.024) and stress (β = 0.73, 95% CI: 0.13, 1.3; p = 0.017) were independently associated with DP. Independent factors for PA were identified including night shifts (β = 6.6, 95% CI: 1.4, 12; p = 0.014) and stress levels (β = −1.3, 95% CI: −2.4, −0.12; p = 0.03). Conclusions: This research underscores the alarmingly high prevalence of burnout and the strong link between elevated EE and DP rates and workplace stress, emphasizing the necessity to identify and mitigate these stressors. It is therefore crucial to evaluate the effectiveness of the current wellbeing and mental health initiatives and programs in Saudi Arabia to ensure that they address evolving challenges and the overall mental health of healthcare personnel. Full article

Autonomous Underwater Vehicles (AUVs) operate independently using onboard batteries and data storage, necessitating periodic recovery for battery recharging and data transfer. Traditional surface-based launch and recovery (L&R) operations pose significant risks to personnel and equipment, particularly in adverse weather conditions. Subsurface docking stations provide a safer alternative but often involve complex fixed installations and costly acoustic positioning systems. This work introduces a comprehensive docking solution featuring the following two key innovations: (1) a novel deployable docking station (DDS) designed for rapid deployment from vessels of opportunity, operating without active acoustic transmitters; and (2) an innovative sensor fusion approach that combines the AUV’s onboard forward-looking sonar and camera data. The DDS comprises a semi-submersible protective frame and a subsurface, heave-compensated docking component equipped with backlit visual markers, an electromagnetic (EM) beacon, and an EM lifting device. This adaptable design is suitable for temporary installations and in acoustically sensitive or covert operations. The positioning and guidance system employs a multi-sensor approach, integrating range and azimuth data from the sonar with elevation data from the vision camera to achieve precise 3D positioning and robust navigation in varying underwater conditions. This paper details the design considerations and integration of the AUV system and the docking station, highlighting their innovative features. The proposed method was validated through software-in-the-loop simulations, controlled seawater pool experiments, and preliminary open-sea trials, including several docking attempts. While further sea trials are planned, current results demonstrate the potential of this solution to enhance AUV operational capabilities in challenging underwater environments while reducing deployment complexity and operational costs. Full article

The Sustainable Development Goals (SDGs) set forth by the United Nations aim to eradicate poverty, protect the environment, and promote global prosperity by 2030. Within this framework, Goal 11 targets explicitly sustainable cities and communities, emphasizing the need for accessible, safe, and sustainable transportation systems for all individuals, including those with disabilities. However, despite these aspirations, individuals with disabilities often face unique challenges and barriers in accessing transportation services. This study delves into the complexities of transportation accessibility for people with disabilities, aiming to understand their perceptions and expectations of service quality regarding reliability, tangibles, cleanliness, safety, comfort, personnel, and stops. In a comprehensive survey involving 302 individuals with disabilities, data were collected considering strata such as visual impairment, hearing impairment, chronic illness, and physical disability. In the study where cluster analysis was applied to examine the common and unique assessments of individuals with disabilities, both demographic characteristics and transportation habits were evaluated to determine the most effective inputs. The optimal results were obtained using disability level, car ownership, access to stops, and frequency of service use, while the inclusion of other sociodemographic variables (such as age and income) negatively affected the quality of the clustering process. By analyzing service quality independently for each cluster, the study unveils potential variations in how people with disabilities perceive and evaluate transportation services. The findings shed light on the distinct evaluation approaches employed by people with disabilities based on their characteristics, highlighting the need for tailored transportation planning and policy-making solutions. For example, in the overall assessment of individuals with disabilities, vehicle ergonomics was not highlighted as an area for improvement, but it emerged as the aspect with the least satisfaction among individuals with higher levels of disability. By addressing these nuances, policymakers and stakeholders can better understand and meet the diverse needs of people with disabilities, contributing to the creation of more inclusive and accessible transportation systems in line with the SDGs. Full article