Search Results (19,233)

This study examines the use of artificial intelligence (AI) in organizational decision-making processes (DMPs) related to investments in renewable energy sources (RESs). The research addresses the gap between AI’s technological capabilities and its actual application in investment practice. An empirical two-stage survey was conducted in 2025, and a comparative analysis was conducted to assess the stability of attitudes toward AI adoption. The findings indicate a low level of practical implementation of AI tools in investment decision-making, despite a clear perception of their potential usefulness, particularly for risk analysis and improving decision objectivity. Organizations tend to perceive AI primarily as analytical support rather than an autonomous decision-making mechanism. The results also reveal a persistent level of uncertainty and hesitation associated with trust in AI systems. Comparative analysis confirms that these attitudes remain stable across research stages, suggesting structural rather than temporary barriers to adoption. This study demonstrates that limited adoption of AI in renewable energy investment decisions results mainly from organizational readiness and trust-related factors rather than technological constraints. The paper contributes empirical evidence on the behavioral and organizational determinants of AI implementation in the context of sustainable energy transition. Full article

This paper addresses the three-dimensional trajectory tracking problem for underactuated autonomous underwater vehicles subject to external disturbances and model uncertainties in complex ocean environments. A robust control method integrating backstepping dynamic surface control and non-singular terminal sliding mode is proposed. Firstly, based on the kinematic and dynamic models of autonomous underwater vehicle, virtual velocity commands are constructed via backstepping approach to stabilize the position and attitude errors. To circumvent the “differential explosion” problem inherent in conventional backstepping control caused by repeated differentiations of virtual control variables, first-order low-pass filters are introduced to construct dynamic surface control, yielding smooth derivatives of virtual velocity commands. Secondly, to enhance convergence rate and robustness, a non-singular terminal sliding surface is designed at the dynamic level, and a terminal reaching law is formulated to achieve finite-time convergence of velocity tracking errors. Furthermore, to compensate for external disturbances and unmodeled dynamics, a disturbance observer based on the super-twisting algorithm is developed, enabling finite-time high-precision estimation of lumped disturbances, with the estimation results incorporated into the control law for feedforward compensation. Finally, comparative simulations are conducted under two typical disturbance scenarios. The results demonstrate that the proposed method achieves instantaneous disturbance estimation (reducing convergence time from 3 s to near zero), significantly smoother control inputs, and superior tracking accuracy with RMSE as low as 0.6788 m and MAE as low as 0.1468 m, reducing errors by up to 30.6% compared to baseline methods. Full article

Real-time measurement of tea bud phenotypes via mobile devices is constrained by model lightweighting challenges, and research on non-contact measurement of tea bud phenotypes based on key points remains largely unexplored. Information on the growth posture of tea buds is an important basis for determining tea maturity grades, quality monitoring, and tea breeding. Therefore, this work develops a deep learning-enabled YOLOv8p-Tea model to estimate key point information of tea bud posture and automatically obtain three-dimensional point cloud information of tea buds by integrating depth information, thereby achieving in situ measurement of tea bud phenotypic parameters. Meanwhile, the model is trained and validated using a tea bud (one-bud-three-leaf) image dataset, and its effectiveness is demonstrated through experiments. Compared to the YOLOv8p-pose model, the model achieves a mAP50 of 98.3%, a P of 97%, and parameters of 0.72 M, with mAP50 and P improved by 1.5% and 1.9%, respectively, and the parameter count is reduced by 25%. To validate the accuracy of phenotypic extraction, the model was deployed on edge devices, and 30 tea buds with one bud and three leaves were randomly selected in a tea garden. The final in situ measurement results showed an MRE of 6.63%. Experimental findings indicate that the developed method is capable of not only effectively estimate tea bud posture but also accurately achieves in situ measurement of tea bud phenotypes, which holds potential applications for meeting the construction needs of smart tea gardens and optimizing tea breeding. Full article

Background/Objectives: Research examining the emotional and psychological challenges experienced by couples undergoing in vitro fertilisation (IVF) remains limited. Existing evidence suggests that women undergoing IVF often report elevated levels of depression, anxiety, and emotional distress, whereas men may experience feelings of anger, inadequacy, and self-doubt, especially following unsuccessful treatment cycles. Successful IVF outcomes are commonly associated with intense joy, relief, and fulfilment as couples realise their aspiration to become parents. In light of the limited qualitative research conducted in Greece to date, in the present study, we aimed to explore the lived experiences of couples undergoing IVF treatment, with particular attention to emotional, relational, and systemic dimensions. Methods: A qualitative research design was employed. Semi-structured, in-depth interviews were conducted with six heterosexual couples (aged 18–49 years) residing in Athens and Karditsa, Greece, all of whom had undergone IVF treatment. Interviews were audio-recorded, transcribed verbatim, and analysed using Interpretative Phenomenological Analysis. Results: Our analysis revealed five interrelated superordinate themes with associated subordinate themes: (1) making sense of infertility and IVF, (2) negotiating relationships under the strain of IVF, (3) IVF as an emotionally demanding journey, (4) navigating institutional and systemic barriers, and (5) projecting the future through IVF experience. Lived experiences of infertile couples undergoing IVF treatment highlighted a range of emotions, social pressure, and attitudes towards IVF and related policies. Conclusions: In Greece, where demographic decline has been widely discussed in policy debates, IVF has gained societal and policy attention. For many participants, IVF represented a hopeful pathway towards achieving parenthood despite the emotional and practical challenges involved. Full article

Through their influence on various inner-school factors, school leaders can be considered relevant with regard to how tracking policies are enacted at the school level. However, research on attitudes of school leaders vis-à-vis school tracking is sparse. We examine profiles of tracking-related attitudes and predictors of profile membership at the individual (i.e., gender, age, work experience, self-efficacy beliefs, leadership competencies) and contextual level (i.e., school size, school level, social context, size of municipality). Data were collected from 1162 school leaders of pre-primary, primary, and lower secondary schools in Switzerland. Using Latent Profile Analysis (LPA), three profiles were identified: inclusion, tracking-separation, and average. School leaders in the inclusion profile showed positive attitudes towards inclusive education and the abolition of grades, a disapproval of early tracking, and negative attitudes towards tracking and its transparency. Leaders in the tracking-separation profile showed negative attitudes towards inclusive education and the abolition of grades, an approval of early tracking, and positive attitudes towards tracking and its transparency. Most school leaders were in the average profile, with neither especially favorable nor especially critical attitudes. While gender, school level, and the size of a municipality were found to be predictors of profile membership, other variables were not. The results give indications as to what factors are relevant in predicting certain attitudes towards tracking. This knowledge can be used for further research as well as for designing targeted interventions. Full article

Localization and navigation techniques have become fundamental for modern lives, while achieving accurate results indoors still remains a significant challenge. The widespread adoption of smart devices, and especially smartphones, has increased the need for accurate and robust pedestrian dead reckoning systems that operate in infrastructure-less environments. Pedestrian dead reckoning’s primary challenge is maintaining accuracy despite varying smartphone placements (attitudes) and the noisy, low-cost inertial measurements units. In this work, a comprehensive pedestrian dead reckoning framework is presented that integrates advanced step counting and heading estimation techniques. For step detection and counting, we propose a robust step counting algorithm that utilizes the optimum fusion of the raw IMU readings, i.e., accelerometer, linear accelerometer, gyroscope, and magnetometer readings, each broken down into three degrees of freedom for different body placements and walking speeds. Furthermore, to address the critical issue of heading estimation, we propose the heading estimation axis mapping (HEAT-MAP) algorithm, which dynamically adjusts the sensor axes in response to the smartphone’s orientation, ensuring a consistent coordinate frame and reducing heading drift. Moreover, to eliminate cumulative pedestrian dead reckoning errors, the system incorporates an adaptive weighted fusion mechanism with Wi-Fi fingerprinting. Experimental results demonstrate that this integrated system significantly improves the overall trajectory accuracy, providing a high-precision, attitude-unconstrained solution for real-time indoor pedestrian navigation. Full article

Background: Oocyte cryopreservation has emerged as a viable fertility preservation method, gaining popularity among women delaying motherhood for non-medical reasons. This study examines the awareness, perceptions, and social factors influencing young women’s decisions regarding elective oocyte cryopreservation (EOC), intending to identify key demographic and psychosocial determinants. Methods: A cross-sectional study was conducted using an online survey distributed via digital platforms between November 2024 and February 2025. A structured questionnaire comprising 31 multiple-choice questions assessed participants’ sociodemographic characteristics, reproductive health history, lifestyle factors, and perceptions of fertility and EOC. Statistical analyses included Chi-square tests, t-tests, and binary logistic regression to identify factors associated with willingness to undergo EOC. Results: A total of 390 women (mean age 22.57 ± 1.41 years) participated. Awareness of oocyte cryopreservation was remarkably high (93.1%). Significant predictors for the intention to undergo EOC included higher educational attainment (Master’s level) (OR = 4.27, 95% CI: 1.10–16.48) and living in a student dormitory (OR = 15.39, 95% CI: 4.86–48.71). Conversely, living with a partner showed a non-significant downward trend in interest (OR = 0.07, 95% CI: 0.01–1.43). Psychological factors, specifically anxiety about future fertility (OR = 0.23, 95% CI: 0.08–0.62 for moderate vs. high anxiety) and a strong desire for future parenthood (OR = 21.75, 95% CI: 1.45–32.99), also emerged as primary drivers of women’s reproductive decisions. Conclusions: Despite high awareness, the willingness to undergo elective oocyte cryopreservation remains limited. Targeted fertility education and supportive policies are needed to address misconceptions, financial barriers, and psychological concerns influencing reproductive decision-making. Further research should explore longitudinal trends in women’s attitudes toward EOC. Full article

To mitigate the compliance deviation risk induced by wind power output fluctuations, this paper proposes a two-stage joint bidding model for cascaded hydropower–wind systems within the electricity spot market framework from a price-taker perspective, explicitly accounting for the decision maker’s risk preferences. To capture the impacts of hydropower vibration zones on joint bidding decisions, the feasible output range of hydropower units is divided into multiple safe operating sub-intervals, and vibration zone avoidance is modeled using binary decision variables; meanwhile, penalty terms are incorporated into the objective function to suppress vibration zone crossing behaviors. From a risk-aware decision-making perspective, Conditional Value-at-Risk (CVaR) is adopted to quantify the downside tail risk of bidding revenues, and a risk factor is introduced to flexibly adjust the decision maker’s risk attitude. Finally, a case study based on a cascaded hydropower system and an associated wind farm in Southwest China is conducted to demonstrate the effectiveness of the proposed joint bidding strategy and to examine the impacts of risk preferences and vibration zone considerations on joint bidding outcomes. Full article

This article addresses physical activity during pregnancy and the postpartum period, a crucial public health concern. We examine the latest insights into physical activity during the perinatal phase, highlighting key findings on the attitudes, perceived barriers, and factors that influence participation. Engaging in moderate physical activity during this period is deemed safe and offers numerous benefits, such as lowered risks of gestational diabetes, preeclampsia, and excessive weight gain, alongside enhanced mental health and sleep quality. After childbirth, continued physical activity provides advantages such as weight management, reduced postpartum depression risk, improved sleep patterns, and a better overall quality of life. However, activity during these stages is often hindered by various barriers stemming from personal issues, societal influences, knowledge gaps, and environmental obstacles. Notably, these challenges tend to shift between pregnancy and postpartum; safety concerns are more prevalent during pregnancy, while issues like fatigue, lack of time, and childcare responsibilities become more significant after delivery. This article uses a socio-ecological framework to analyze these obstacles in depth, categorizing them into intrapersonal, interpersonal, environmental, organizational, and policy-based levels. Full article

Background: This study aims to examine the level of awareness, attitudes (including stigma and discrimination), and behaviors related to tuberculosis among the population of the Republic of Kazakhstan to identify priorities for raising awareness and reducing stigma. Methods: The study interviewed 2400 people from six regions of Kazakhstan using stratified random sampling based on gender and age. Respondents were chosen from cities and villages, including RK citizens over 18 who could answer questions. Additionally, 400 people with HIV, 200 drug users, 200 internal migrants, and 500 health workers were interviewed. Recruitment was done through profile organizations and the snowball method, with all participants giving informed consent. Results: The study showed different levels of knowledge about tuberculosis (TB) in Kazakhstan. Radiography was the most commonly known detection method (71–91%). Awareness of sputum testing was highest among drug users (84%) and HIV patients (77%), but lower among internal migrants (39%). Internal migrants had the most uncertainty about TB tests (17%). Stigmatizing views of TB patients existed, with 28–38% believing most people reject them. Among healthcare workers, only 38. 8% correctly identified the G-Xpert test for TB and rifampicin resistance, and over one-third misunderstood the Mantoux test’s purpose. Conclusions: The findings show a need for focused educational efforts to boost TB awareness and lessen stigma, especially among internal migrants and the general public. Vulnerable groups, like PLHIV and PWUD, have higher awareness but still encounter major barriers. Improving healthcare workers’ knowledge about TB diagnostics is also crucial. Specific communication strategies and policies are needed to improve TB detection, reduce social stigma, and improve healthcare access for at-risk groups in Kazakhstan. Full article

Located in northeastern Anatolia, Çıldır and Ardahan serve as a gateway to the Caucasus for political entities such as the state and mobile groups such as the tribe. Due to this geopolitical characteristic, the region has fallen under the dominion of numerous states and civilizations throughout history. With its fertile highlands, Lake Çıldır, and natural water resources like the Kura River, the area constitutes an attractive living space for hem settled agriculturalists and nomadic tribe groups subsisting on animal husbandry. These features have profoundly influenced the ethnic, demographic, socio-economic, and cultural fabric of the region. Following the establishment of Ottoman sovereignty in the 16th century, Çıldır and Ardahan assumed a vital role in the state’s Caucasian and Eastern policies. This research addresses the Turkmen tribe and other ethnic communities residing around the eyalet of Çıldır and the sanjak of Ardahan. It further examines the banditry activities carried out by these groups, the attitudes of central and local administrators toward such activities, migration and settlement patterns, and the economic and political pressures exerted by the Russian State upon these tribes. The political and economic pressures exerted by the Russian State on these tribes reflect a broader imperial strategy of frontier making, as discussed by Khodarkovsky in the context of Russia’s expansion into its southern borderlands. By positioning the region as a negotiated frontier, this study moves beyond a descriptive narrative to analyze how tribal mobility and settlement functioned as tools of sovereignty and resistance within the broader context of Ottoman state formation and trans-imperial rivalry. The methodology employed in this study is the Qualitative Research Method; accordingly, documents from the Presidential Ottoman Archives (BOA) were transcribed, and the relevant sections were interpreted and incorporated into the study. The archival findings are contextualized within recent historiographical debates concerning the shifting definition of the state versus nomadic agency during the transition from the 18th to the 19th century. While existing literature contains academic studies aiming to elucidate the archaeological, geographical, economic, and administrative structures of Çıldır and Ardahan, it has been determined that no academic research has been conducted to analyze the ethno-socio-demographic structure of the region specifically focusing on the 18th and 19th centuries in a historical sense. With this focus on the interplay between imperial frontiers and tribal identity, this study provides a critical analysis of how local dynamics shaped the grand strategies of the Ottoman and Russian Empires. Full article

Objectives: To describe the utilization patterns and patient perceptions of individual dietary consultations among people with type 2 diabetes in Israel, and to examine the association between dietary consultation attendance and adherence to the Mediterranean diet. Methods: This cross-sectional study enrolled adults with type 2 diabetes from a specialty diabetes clinic in Israel between July 2022 and May 2023. Participants completed structured interviews in which they were asked to report their perceptions of various diabetes management components, their sources of dietary information, and—among those who had previously attended dietary consultations—their satisfaction with specific aspects of the consultation experience. Medical records were reviewed to determine attendance at dietary consultations. Adherence to the Mediterranean diet was measured using the validated I-MEDAS 17-item questionnaire. Multivariable logistic regression was used to examine the association between attendance at dietary consultation within the past 12 months and adherence to the Mediterranean diet, adjusting for age, sex, socioeconomic status, and obesity (BMI ≥ 30 kg/m²). Results: Overall, 134 patients were interviewed. Their mean age was 69.8 ± 10.7 years, mean diabetes duration was 19.1 ± 9.7 years, and 96.3% were Jewish. Only 29.1% attended a dietary consultation within the past 12 months, and 52.2% had at least one consultation over the preceding 5 years. While 79.9% of participants rated maintaining normal weight and 78.4% rated taking medications as “very helpful” for diabetes control, only 29.9% reported that regular dietitian visits would be “very helpful.” Most participants (74.6%) were unable to name a specific dietary pattern they were following. Among those who recalled ever attending dietary consultations, most reported in interviews that recommendations were culturally aligned with their preferences. No association was found between recent attendance at dietary consultations and adherence to the Mediterranean diet (adjusted OR 1.03, 95% CI 0.39–2.74). Conclusions: Despite having accessible and affordable individual dietary consultations, the utilization of this service remains low, and patient-reported benefit limited. These exploratory findings point to perception-based barriers to engagement that warrant further investigation. Full article

In hospitality SMEs, digital transformation is increasingly linked to sustainability goals. However, evidence on how corporate social responsibility (CSR) relates to the adoption of artificial intelligence (AI) in owner-managed firms remains limited. This study examines CSR practices, managerial attitudes toward AI, and AI adoption in micro and small restaurant SMEs in a small European Union (EU) economy. Using survey data from 157 Slovenian restaurant SMEs and structural equation modelling, CSR is conceptualised as an enacted, practice-based orientation. At the same time, managerial attitudes toward AI are modelled as the key mechanism preceding adoption. Results reveal an asymmetric relationship between CSR and AI. Employee-related CSR practices, which are mainly institutionalised, do not significantly influence managerial AI attitudes. In contrast, environmental CSR practices are negatively associated with AI attitudes, indicating more cautious evaluations among environmentally responsible managers. Managerial attitudes toward AI are positively and significantly associated with AI adoption, confirming their central role in adoption decisions. Financial performance, measured by objective revenue data, does not emerge as a direct outcome of AI adoption but rather operates as a contextual condition shaping how CSR practices relate to managerial attitudes and how those attitudes translate into adoption decisions. Overall, the findings indicate that CSR does not uniformly translate into managerial attitudes toward AI and subsequent AI adoption in restaurant SMEs. Full article

Background/Objectives: Early manifestations of body dissatisfaction and subclinical disordered eating are increasingly recognized as important correlates of later disordered eating, underscoring the need for research in preadolescent populations. This study examined the prevalence of disordered eating risk and tested whether body-figure discrepancy and thinness-related attribution patterns were associated with disordered-eating symptomatology beyond gender and BMI among children aged 10–12 years. Methods: A total of 227 children completed the Children’s Eating Attitudes Test-26 (ChEAT-26), body-figure silhouette measures, and assessments of thinness-related social-emotional, negative, and competence attributions. Results: Overall, 16.3% of participants scored at or above the clinical cutoff for elevated eating-pathology risk, with no significant gender differences. Hierarchical regression analyses showed that the discrepancy between perceived and ideal body figure was significantly associated with disordered eating severity, although the proportion of explained variance was modest. Logistic regression further indicated that each unit increase in body-figure discrepancy was associated with a 37% increase in the likelihood of exceeding the clinical risk threshold. In contrast, thinness-related attribution indices were intercorrelated but were not significantly associated with disordered eating, nor were their effects moderated by gender. Conclusions: These findings indicate that body-image discrepancy is associated with disordered eating in late childhood, at a stage when marked gender differences are not yet evident. Although causal inferences cannot be drawn, the presence of clinically elevated symptom levels and the observed associations highlight the potential importance of early attention to body dissatisfaction in preventive efforts. Full article

Infection prevention and control remains an essential component of effective healthcare delivery and disease prevention. This study aimed to explore healthcare workers’ perspectives on factors influencing compliance with infection prevention and control practices in Katavi Regional Referral Hospital, Tanzania. With a qualitative approach, we aimed to enable a broader narrative, gain a more detailed understanding of IPC practices, and identify experiences that may be overlooked in a forced-choice questionnaire. A cross-sectional design using a phenomenological approach was employed. An interview guide was used to collect data from 19 participants (five doctors, four nurses, four laboratory practitioners, and six from administration positions; ward in-charges, quality improvement officers and administrative officers) between 24 July 2025, and 23 August 2025. Among participants, nine were the key informants, and 10 were involved in in-depth interviews. Thematic analysis revealed that the availability of IPC supplies, desire for personal and patient protection, high patient volume, awareness of IPC protocols, institutional support, supportive supervision, and HCWs’ attitudes towards IPC activities were factors influencing IPC compliance. Strengthening structured supervision, ensuring a constant supply of IPC materials, and investing in continuous IPC capacity building may be an important approach in enhancing compliance with IPC practices and reducing hospital-associated infection risk in Katavi Regional Referral Hospital and similar resource-limited healthcare settings. Full article