Showing 3,781 - 3,800 results of 3,993 for search '"uncertainty"', query time: 0.07s Refine Results
  1. 3781

    Intensified Drought Threatens Future Food Security in Major Food-Producing Countries by Zihao Liu, Aifeng Lv, Taohui Li

    Published 2024-12-01
    “…These findings provide a scientific basis for assessing global food security risks and offer policy recommendations to address uncertainties in food supply under climate change.…”
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    Article
  2. 3782

    ESO-Based Non-Singular Terminal Filtered Integral Sliding Mode Backstepping Control for Unmanned Surface Vessels by Jianping Yuan, Zhuohui Chai, Qingdong Chen, Zhihui Dong, Lei Wan

    Published 2025-01-01
    “…Aiming at the control challenges faced by unmanned surface vessels (USVs) in complex environments, such as nonlinearities, parameter uncertainties, and environmental perturbations, we propose a non-singular terminal integral sliding mode control strategy based on an extended state observer (ESO). …”
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    Article
  3. 3783

    Protocol for a systematic review of living labs in agricultural-related systems by Maryam Yousefi, Frank Ewert

    Published 2023-10-01
    “…However, the existing knowledge is dispersed, and uncertainties remained regarding their approaches, methods, and outcomes. …”
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    Article
  4. 3784

    Exploring the transition to agroforestry for smallholder farmers: a feasibility study for the Ashanti region of Ghana by Youp Dumas, Jolien Ubacht, Ellen van Andel, Lily Akorfa Keledorme

    Published 2025-01-01
    “…These pertain to: uncertainties in land tenure agreements, the absence of effective conflict resolution mechanisms, having no knowledge of and tools for maintaining trees, and the lack of financial resources for upfront investments. …”
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    Article
  5. 3785

    On Defining Expressions for Entropy and Cross-Entropy: The Entropic Transreals and Their Fracterm Calculus by Jan A. Bergstra, John V. Tucker

    Published 2025-01-01
    “…This can lead to calculations with problematic subexpressions such as <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0</mn><msub><mo form="prefix">log</mo><mn>2</mn></msub><mn>0</mn></mrow></semantics></math></inline-formula> and uncertainties in large scale calculations; partiality also introduces complications in logical analysis. …”
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    Article
  6. 3786

    Integrating Human-Computer Interactions in Nigerian Energy System: A Skills Requirement Analysis by Omoseni Adepoju, Oluwarotimi Akinyomi, Oluwadamilola Esan

    Published 2023-12-01
    “…Despite Nigeria's abundant energy resources, the sector faces multiple challenges, such as infrastructural deficits, policy inconsistencies, regulatory uncertainties, and overreliance on non-renewable energy sources. …”
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    Article
  7. 3787

    Carbon emissions assessment of concrete and quantitative calculation of CO2 reduction benefits of SCMs: A case study of C30-C80 ready-mixed concrete in China by Zuojiang Lin, Guangyao Lyu, Kuizhen Fang

    Published 2025-07-01
    “…The average carbon emissions for C30-C80 concrete were calculated to range from 262.21 to 401.78 kgCO2e/m3, with data showing significant dispersion due to uncertainties in raw materials and experimental conditions. …”
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    Article
  8. 3788

    Availability of support systems for youth who left child and youth care centres during COVID-19 by Fadzaishe B. Zingwe, Maditobane R. Lekganyane

    Published 2025-01-01
    “…In further compounding their challenges was their being indeterminate given the uncertainties associated with COVID-19. It was therefore, essential for them to have the necessary support systems to aid them both during their period in care as well as when they left these centres. …”
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    Article
  9. 3789

    Hyperuricemia Increases the Risk of Atrial Fibrillation: A Systematic Review and Meta-Analysis by Zheng Gao, Hekai Shi, Wei Xu, Zhengzhao Guan, Xiuxiu Su, Nuojin Guo, Huijie Ma

    Published 2022-01-01
    “…And design of the observational studies brought heterogeneity, but no uncertainties. Patients with hyperuricemia were easier to suffer from atrial fibrillation. …”
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    Article
  10. 3790

    Settlement Analysis of Pipe Culvert Situated in Soft Clay Treated with Prefabricated Vertical Drains by Adamu Beyene Negesa

    Published 2022-01-01
    “…However, because of environmental and technical factors like calibration and alignment errors, the settlement instrument readings may be exposed to uncertainties, which may probably affect the safety of the culvert structure. …”
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    Article
  11. 3791

    Secondary School Learners’ Transition to the University: A Qualitative Research Approach by Mbulaheni Paul Tshisikhawe, Buyisani Dube

    Published 2024-12-01
    “…The transition of learners from secondary school to university education, while inevitable, has always been marred by myriad uncertainties and challenges. This is especially so for secondary school learners who register in previously disadvantaged higher education institutions. …”
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    Article
  12. 3792

    Calculated parameters for the diagnosis of Wilson disease by Nada Syazana Zulkufli, Pavai Sthaneshwar, Wah-Kheong Chan

    Published 2023-03-01
    “…Introduction: The diagnosis of Wilson disease (WD) is plagued by biochemical and clinical uncertainties. Thus, calculated parameters have been proposed. …”
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    Article
  13. 3793

    On Vaccination Strategies for a SISV Epidemic Model Guaranteeing the Nonexistence of Endemic Solutions by S. Alonso-Quesada, M. De la Sen, R. Nistal

    Published 2018-01-01
    “…One of them deals with the presence of uncertainties, which affects the synthesis of the vaccination control law, in the measures of the subpopulations of the model.…”
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  14. 3794

    A Novel Time Delay Nonsingular Fast Terminal Sliding Mode Control for Robot Manipulators with Input Saturation by Thanh Nguyen Truong, Anh Tuan Vo, Hee-Jun Kang

    Published 2024-12-01
    “…The TDE approximates the robot’s unknown dynamics and uncertainties, while a novel nonsingular fast terminal sliding mode (NFTSM) surface and novel fixed-time reaching control law (FTRCL) are introduced to ensure faster convergence within a fixed time and improved accuracy without a singularity issue. …”
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    Article
  15. 3795

    Early Enrichment Population Theory at High Redshift by Anne E. Blackwell, Joel N. Bregman

    Published 2025-01-01
    “…Previous work has argued that the initial mass function (IMF) of the EEP must be flatter than those found at lower redshifts, but with considerable uncertainties. In this work, we present a more quantitative model for the EEP and demonstrate how observational constraints can be applied to the IMF using supernova Type Ia (SN Ia) rates, delay time distributions (DTDs), and the luminosity functions (LFs) of galaxy clusters. …”
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  16. 3796

    Beneath The Same Sky, Different Faiths: Why is Interfaith Marriage Prohibited in Islam? by Baidhowi Baidhowi, Dewi Zahra Setyawati, Yustina Dhian Novita, Veyza Olivia, Armanda N Ardiyanto, Qlarissa Melinda, Hisyam Maliki Akbar

    Published 2024-12-01
    “…Sociologically, interfaith marriages can lead to identity struggles, legal uncertainties, and challenges in raising children with a unified religious identity. …”
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    Article
  17. 3797

    Combining Machine Learning Models to Improve Estimated Time of Arrival Predictions by Ramon Dalmau, Aymeric Trzmiel, Stephen Kirby

    Published 2025-01-01
    “…The time of arrival, however, is difficult to predict because it is affected by the uncertainties of the previous flight phases, with take-off time variability being the most significant contributor. …”
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    Article
  18. 3798

    Lived experiences for individuals with cystic fibrosis who have undergone lung transplantation: a qualitative study by Ulrika Skogeland, Isabelle de Monestrol, Terezia Pincikova, Tove Godskesen

    Published 2025-02-01
    “…This life-saving procedure presents substantial challenges and uncertainties. While there is existing research on support and information needs post-lung transplant from various perspectives, this study aims to specifically address the unique experiences and challenges faced by individuals with CF during both the pre-transplant and post-transplant periods. …”
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    Article
  19. 3799

    Numerical analysis of factors causing long-term trends and annual variations of sulfur and nitrogen deposition amount in Japan from 2000 to 2020 by Satoru Chatani, Hikari Shimadera, Kyo Kitayama, Kazuya Nishina

    Published 2025-01-01
    “…The air quality simulations performed well in reproducing the long-term trends and annual variations in the wet deposition amount, whereas the simulated dry deposition amount may contain larger uncertainties. The decreasing trends in sulfur deposition were statistically significant during the entire study period (2000–2020) in most of Japan. …”
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  20. 3800

    Innovative financial solutions for sustainable investments using artificial intelligence-based hybrid fuzzy decision-making approach in carbon capture technologies by Serhat Yüksel, Serkan Eti, Hasan Dinçer, Yaşar Gökalp, Gabriela Oana Olaru, Nihal Kalaycı Oflaz

    Published 2025-01-01
    “…Abstract High costs, technical difficulties, and policy uncertainties are the main challenges in carbon capture technology investments. …”
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    Article