Article
Mathematics, Applied
Fernando Cobos, Luz M. Fernandez-Cabrera
Summary: We provide a necessary and sufficient condition for the weak compactness of bilinear operators interpolated using the real method. However, this characterization does not hold for interpolated operators using the complex method.
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS
(2024)
Article
Environmental Sciences
Jinhai Yu, Bang An, Huan Xu, Zhongmiao Sun, Yuwei Tian, Qiuyu Wang
Summary: This study established analytical observation equations between gravity anomaly and topography and obtained the corresponding iterative solving method based on the least square method after linearizing the equations. The regularization method and piecewise bilinear interpolation function were introduced into the observation equations to effectively suppress the high-frequency effect of the boundary sea region and the low-frequency effect of the far sea region. Finally, the seafloor topography beneath a sea region in the South China Sea was predicted as an actual application, and the prediction results were compared with ship soundings data, showing a root-mean-square (RMS) error of 127.4 m and a relative error of approximately 3.4%.
Article
Mathematics
Jin Bong Lee, Jinsol Seo
Summary: In this paper, we propose a criterion to determine the boundedness of maximal operators associated with Fourier multipliers on Lp(Rd) for each p is an element of (1, infinity). This criterion applies to multipliers of the Mikhlin type or limited decay that may not be radial. We employ modified square function estimates and bilinear interpolation techniques to achieve this. Furthermore, we introduce a function space Sigma 2(B) as a variant of weighted Sobolev spaces where B denotes a Banach space of functions on Rd. As a result, we obtain convergence results for fractional half-wave equations and surface averages, as well as the Lp boundedness for the maximal operators.
JOURNAL OF FUNCTIONAL ANALYSIS
(2023)
Article
Mathematics
Fernando Cobos, Luz M. Fernandez-Cabrera, Anton Martinez
Summary: This paper studies the interpolation properties of weakly compact bilinear operators using both real and complex methods. It also investigates the factorization property of these operators through reflexive Banach spaces.
MATHEMATISCHE NACHRICHTEN
(2022)
Article
Automation & Control Systems
Dafeng Wang, Qian Ma, Naiyao Wang, Xuanzhe Fan, Mingyu Lu, Hongbo Liu
Summary: Predicting crowd flow accurately and timely is challenging due to uncertainty, but the proposed Active Offset Network (AONet) with ActiveGRU shows promise in predicting pedestrians' future positions. By utilizing convolution operation and bilinear interpolation, along with introducing a probabilistic sparse strategy, AONet outperforms state-of-art baselines in both accuracy and computational efficiency according to experiments on popular benchmarks.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2021)
Article
Environmental Sciences
Daoyang Jiang, Lunche Wang, Xiuping Yi, Xin Su, Ming Zhang
Summary: This study evaluated aerosol optical depth (AOD) over China using different products and found that MODIS DB performed the best in overall accuracy and sample matching, while MERRA-2 performed the worst. Land cover type and elevation affected the applicability of different products.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Mathematics, Applied
Beong In Yun
Summary: A new constructive piecewise interpolation method is proposed in this work, which addresses the issue of pathological or insufficient given data by weighted averaging two sequential interpolating polynomials. Analysis of the error bound and numerical examples demonstrate the usefulness of the presented scheme. The proposed interpolating function is found to be C2 over the entire interval containing the given data, with the method using cubic polynomials comparable to the well-known cubic spline scheme.
APPLIED MATHEMATICS AND COMPUTATION
(2021)
Article
Mathematics, Applied
Fernando Cobos, Luz M. Fernandez-Cabrera, Anton Martinez
Summary: This study completes the range of parameters in the interpolation formula established by Mastylo and Silva for measuring the non-compactness of a bilinear operator interpolated by the real method.
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS
(2021)
Article
Computer Science, Interdisciplinary Applications
Rongqian Chen, Linkuan Wu, Yancheng You
Summary: In this paper, a new type of high order weighted compact scheme based on ZJS and ZQ methods is designed, which shows better resolution, smaller dissipation, and the ability to capture strong shock waves through comparisons with other schemes.
JOURNAL OF COMPUTATIONAL PHYSICS
(2021)
Article
Computer Science, Software Engineering
Jing Sun, Daxin Nie, Weihua Deng
Summary: This paper investigates the finite difference discretization for the two-dimensional tempered fractional Laplacian and successfully applies it to solve the tempered fractional Poisson equation with homogeneous Dirichlet boundary condition, providing an error estimate. Numerical experiments confirm the predicted convergence rates and effectiveness of the schemes.
BIT NUMERICAL MATHEMATICS
(2021)
Article
Engineering, Electrical & Electronic
Fei Yan, Shan Zhao, Salvador E. Venegas-Andraca, Kaoru Hirota
Summary: A bilinear interpolation technique was proposed for flexible representations of quantum images, utilizing quantum modules for interpolation circuit. Experimental results showed that the proposed technique produced higher quality enlarged images and could process FRQIs of different shapes and sizes.
DIGITAL SIGNAL PROCESSING
(2021)
Article
Quantum Science & Technology
Chao Gao, Ri-Gui Zhou, Xin Li, Yao-Chong Li
Summary: The paper introduces an asymmetric scaling method for quantum images with arbitrary scaling ratio, using generalized quantum image representation and bilinear interpolation, with corresponding quantum circuit design and network complexity and simulation result analysis. The proposed scheme shows lower complexity compared to other interpolation schemes.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Haowei Guan, Zhang Zhang, Xin Cheng, Yizhong Yang, Guangjun Xie
Summary: This paper presents a relative-contrast-based algorithm to enhance VLSI real-time video interpolation image quality by forming an adaptive interpolation correction factor wi to correct linear interpolation algorithm. The integrated LUT in the proposed design simplifies the logarithmic process in wi generation, leading to improved image quality and reduced resource requirements compared to similar efforts. Overall, the VLSI implementation performance demonstrates predictable image quality enhancements with reasonable area cost, as indicated by chip test results supporting interpolation function up to 1920x1080 at 60FPS, for both upscaling and downscaling.
MICROELECTRONICS JOURNAL
(2021)
Article
Environmental Sciences
Yixuan Wang, Yan-Jun Shen, Muhammad Zaman, Ying Guo, Xiaolong Zhang
Summary: This study aims to downscale the TRMM data from 2000 to 2017 in the UIB using stepwise regression analysis (SRA) and a geographically weighted regression (GWR) model, obtaining monthly precipitation data with a high spatial resolution of 1 km x 1 km. The findings indicate that elevation, longitude, the Normalized Difference Vegetation Index (NDVI), and latitude have the highest correlations with precipitation in the UIB and are the most important variables for downscaling.
Article
Meteorology & Atmospheric Sciences
Samiran Das, Abu Reza Md Towfiqul Islam
Summary: This study compared the effectiveness of various interpolation methods for estimating annual average rainfall in Bangladesh using observed daily rainfall data from 34 stations. The results showed that the multivariate kriging approach (KED) combined with longitude (LON) yielded the best interpolation results, while inverse distance weighting (IDW) performed the worst.
THEORETICAL AND APPLIED CLIMATOLOGY
(2021)
Article
Environmental Sciences
Saif Uddin, Scott W. Fowler, Nazima Habibi, Sufiya Sajid, Sam Dupont, Montaha Behbehani
Summary: This study collected microplastic (MP) samples from indoor environments in Kuwait and found that different locations and types of air conditioning had a significant impact on MP concentration, while the presence or absence of carpets did not have a significant effect. This provides the first baseline data on MPs in Kuwait and highlights the need for standardized protocols for collecting MPs in the <= 2.5 μm fraction.
Article
Environmental Sciences
Bondi Gevao, Saif Uddin, Divya Krishnan, Smitha Rajagopalan, Nazima Habibi
Summary: This study investigated the concentrations of antibiotics in wastewater from two treatment plants in Kuwait, with higher influent concentrations observed, showing seasonal variations with the highest levels during winter-summer transitions. The research provides the first reported data on antibiotic concentrations in wastewater in Kuwait, laying the groundwork for further evaluation of environmental impact.
Article
Microbiology
Nazima Habibi, Saif Uddin, Montaha Behbehani, Fadila Al Salameen, Nasreem Abdul Razzack, Farhana Zakir, Anisha Shajan, Faiz Alam
Summary: The airborne transmission of COVID-19 has led to a focus on bioaerosols. This study provides baseline data on the bacterial and fungal communities in indoor hospital environments dealing with COVID-19 patients. The findings highlight the need for regular surveillance of indoor hospital environments to prevent future outbreaks.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Hanan Al-Khalaifah, Saif Uddin
Summary: This study evaluated the feasibility of using Sargassum sp., Spirulina sp., and Gracilaria sp. as poultry feed and found that they can partially substitute imported protein sources. It also suggested promising opportunities to harvest algae from the marine area, but establishing outdoor algal ponds in the Middle East is not environmentally viable.
Article
Green & Sustainable Science & Technology
Nazima Habibi, Saif Uddin, Brett Lyons, Hanan A. Al-Sarawi, Montaha Behbehani, Anisha Shajan, Nasreem Abdul Razzack, Farhana Zakir, Faiz Alam
Summary: This study sequenced sediment samples from the coastal areas of Kuwait and found 402 ARGs, some of which showed resistance against multiple drugs. The study also recorded the presence of certain pathogens and variations in ARGs across different spatial locations. The findings indicate the presence of ARGs in coastal marine sediments and the potential dissemination to surrounding ecosystems.
Article
Green & Sustainable Science & Technology
Hanan A. Al-Sarawi, Afrah B. Najem, Brett P. Lyons, Saif Uddin, Mohammad A. Al-Sarawi
Summary: This study reveals the antimicrobial resistance (AMR) of Escherichia coli derived from marine sediment in Kuwait, showing widespread resistance and high levels of resistance near hospital outfalls.
Article
Green & Sustainable Science & Technology
Saif Uddin, Scott W. Fowler, Montaha Behbehani
Summary: The International Commission on Radiological Protection (ICRP) has made significant efforts to establish a reliable basis for equivalent and effective doses from radionuclides. This perspective highlights some issues with the current method of estimating Po-210 dose to humans and the need to update it. Cooking seafood can lead to significant loss of Po-210, which warrants changing the dose factor for seafood ingestion.
Article
Computer Science, Artificial Intelligence
Wajid Ali, Miin-Shen Yang, Mehboob Ali, Saif Ud-Din
Summary: Model-based clustering technique is an optimal choice for finding the real structure of data sets, but it remains a challenging and important research objective. Proposed methods based on EM algorithm have been used, but they cannot effectively handle irrelevant features and outliers, leading to performance issues in clustering algorithms.
APPLIED ARTIFICIAL INTELLIGENCE
(2023)
Article
Biochemistry & Molecular Biology
Nazima Habibi, Saif Uddin, Montaha Behbehani, Mohamed Kishk, Nasreem Abdul Razzack, Farhana Zakir, Anisha Shajan
Summary: Antimicrobial resistance (AMR) is a major threat to human health. The World Health Organization has implemented the One-Health approach to assess antibiotic-resistant genes (ARGs) within shared environments and reduce the development of AMR. This study investigated the distribution of ARGs in aerosols collected from Kuwait and hospitals, finding the presence of various ARGs, with beta-lactam being the most dominant drug class. Indoor aerosols showed a higher diversity of ARGs compared to outdoors, and seasonal variations in ARG abundances were observed. These findings highlight the importance of studying aerosols as a vehicle for ARG dissemination.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Environmental Sciences
Saif Uddin, Nazima Habibi, Scott W. Fowler, Montaha Behbehani, Bondi Gevao, Mohammad Faizuddin, Aysun Ugur Gorgun
Summary: The Middle East is a highly dust polluted region, with Kuwait reporting dust aerosols containing up to 1400 mu g m(-3) of dust, among the highest globally. There has been significant research on the impact of dust on air quality and human health, and the World Health Organization has recently lowered the limit of annual PM2.5 exposure to 5 mu g m(-3) from 10 mu g m(-3). This review summarizes the published data from Kuwait on contaminants associated with dust, including organic contaminants and their concentrations in different size fractions.
Article
Microbiology
Nazima Habibi, Saif Uddin, Hanan Al-Sarawi, Ahmed Aldhameer, Anisha Shajan, Farhana Zakir, Nasreem Abdul Razzack, Faiz Alam
Summary: In this study, the metagenomes of 12 coastal surface sediments were analyzed through whole genome shotgun sequencing. The results revealed that bacteria, archaea, and fungi were the dominant microbial communities in the area. Additionally, various viruses and plant pathogens were identified. This study provides valuable information on the dominant microbial communities and functional genes in the marine sediments of Kuwait as a baseline for future biomonitoring programs.
Article
Chemistry, Multidisciplinary
Nazima Habibi, Saif Uddin, Montaha Behbehani, Hanan A. Al-Sarawi, Mohamed Kishk, Waleed Al-Zakri, Nasreem Abdulrazzack, Anisha Shajan, Farhana Zakir
Summary: Prolonged and excessive use of antibiotics has led to the development of antimicrobial resistance (AMR), which requires a deeper understanding of the antibiotic-resistant gene elements involved. High-throughput quantitative polymerase chain reaction (HT-qPCR) and shotgun metagenomic sequencing (SMS) are commonly used molecular methods for AMR surveillance. This study compared these approaches in mapping antibiotic-resistant gene elements in coastal sediments of Kuwait.
APPLIED SCIENCES-BASEL
(2023)
Article
Infectious Diseases
Hanan A. Al-Sarawi, Nazima Habibi, Saif Uddin, Awadhesh N. Jha, Mohammed A. Al-Sarawi, Brett P. Lyons
Summary: In this study, the prevalence of antibiotic-resistance genes (ARGs) in Escherichia coli isolated from mollusks and coastal water samples in Kuwait's marine environment was investigated using a genome-based approach. The study also examined the plasmids and integron genes associated with the spread of ARGs. The findings revealed the presence of various genes conferring resistance to different classes of antibiotics, including those commonly found in E. coli plasmids. Additionally, a significant correlation was observed between integron genes and antibiotic resistance. These results are valuable for monitoring horizontal gene transfer of antibiotic resistance in Kuwait's marine environments.
Review
Environmental Sciences
Barry P. Jupp, Saif Uddin, Scott W. Fowler, Mohd. Faizuddin
Summary: This review focuses on assessing trace metal concentrations in nearshore and offshore bottom sediments in the Arabian Gulf and Oman. It highlights the concerns over harmful impacts from metal accumulation in the semi-enclosed Gulf, particularly near industrial zones and power/desalination plants. The study identifies hot spots with elevated levels of toxic trace metals and recommends efforts to mitigate future impacts.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Ecology
Nazima Habibi, Saif Uddin, Montaha Behbehani, Mohd Wasif Khan, Nasreem Abdul Razzack, Faiz Shirshikhar
Summary: This manuscript describes the de novo transcriptome of Parvocalanus crassirostris and analyzes the differential gene expression under changing environmental conditions. The results provide important insights into the response of copepods to climate change.
REGIONAL STUDIES IN MARINE SCIENCE
(2023)
Article
Ecology
Narendra Nelli, Diana Francis, Ricardo Fonseca, Olivier Masson, Mamadou Sow, Emmanuel Bosc
Summary: This study investigates the changes in the atmospheric electric field (Ez) during foggy conditions in the hyperarid region of the United Arab Emirates. The results show that as fog persists, Ez becomes more variable due to the absorption and redistribution of charges by the fog, which alters the ion balance and affects electrical conductivity in the atmosphere.
JOURNAL OF ARID ENVIRONMENTS
(2024)
Article
Ecology
Ezra Hadad, Amir Balaban, Jakub Z. Kosicki, Reuven Yosef
Summary: This study investigated whether the prey of striped hyenas has adapted to the change in the natural environment caused by human activities, particularly artificial light at night (ALAN). The results showed that ALAN had no impact on the diet or den distribution of the hyenas in central Israel. The study also found that domestic animals were the most common prey, and there were also some vegetative species in their diet. Overall, the feeding behavior of striped hyenas is influenced by geographical region, habitat, and human activities.
JOURNAL OF ARID ENVIRONMENTS
(2024)
Article
Ecology
Rahim Najafi Tireh Shabankareh, Pardis Ziaee, Mohammad Javad Abedini
Summary: This study evaluated the IMERG satellite-based precipitation product in the Fars province of Iran using daily rain gauges as reference data. The results showed that the product tends to overestimate light rainfall and underestimate heavy rainfall, with the best performance in the 40-80 mm/day range. The accuracy of the product varies by month and is less biased in months with milder temperatures. Additionally, there was a higher correlation in mid-elevated areas, positive bias in low-elevated areas, and negative bias in high-elevated areas. Longer time scales showed considerable improvement in the IMERG estimates.
JOURNAL OF ARID ENVIRONMENTS
(2024)
