Article
Optics
Bohu Liu, Ping Song, Yayu Zhai, Xuanquan Wang, Wuyang Zhang
Summary: A novel method integrating DCS method and a modulated continuous-wave laser source was proposed to improve the quality of depth maps acquired by a 3DGI system. Simulation results demonstrated the feasibility and superior anti-interference performance of the new DCS-3DGI method compared to conventional 3DGI methods.
Article
Multidisciplinary Sciences
Jimin Sun, Wenqi Shi, Felipe O. Giuste, Yog S. Vaghani, Lingzi Tang, May D. Wang
Summary: Recent advances in AI have led to interest in explainable AI (XAI) methods for clinical decision support systems. However, evaluating the effectiveness of these methods has been challenging. This study proposes a patch perturbation-based approach to automatically evaluate the quality of explanations by conducting poisoning attacks during model retraining.
SCIENTIFIC REPORTS
(2023)
Article
Computer Science, Interdisciplinary Applications
Rafael C. Schick, Thomas Koehler, Wolfgang Noichl, Fabio De Marco, Konstantin Willer, Theresa Urban, Manuela Frank, Thomas Pralow, Ingo Maack, Sven Prevrhal, Bernd Lundt, Alexander Fingerle, Daniela Pfeiffer, Julia Herzen, Franz Pfeiffer
Summary: Dark-field radiography is a promising imaging technique for early diagnosis of lung diseases, but prolonged image acquisition time can lead to motion artifacts. A motion artifact reduction algorithm was developed and successfully evaluated in simulated chest phantom and in vivo human data, significantly improving the image quality of dark-field chest X-ray radiographs by reducing motion artifacts.
IEEE TRANSACTIONS ON MEDICAL IMAGING
(2022)
Article
Optics
Hideaki Wakabayashi, Masamitsu Asai, Jiro Yamakita
Summary: This paper presents a new numerical method based on scattering factors for the scattering problem of a composite dielectric grating embedded with conducting strips. The method calculates scattering factors and Joule losses for propagating wave and evanescent wave incidences by using the Galerkin procedure. Numerical examples are given to demonstrate the scattering properties and normalized Joule losses of an asymmetric multiple plane grating consisting of conducting strips.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2023)
Article
Engineering, Mechanical
Shaozhen Hua, Cheng Chang, Huabo Liu, Fanjing Meng
Summary: The study investigated jet buckling of highly viscous fluid and found that shear rate and gravity have an effect on the phenomenon. Through experiments, numerical simulation, and dimensional analysis, it was revealed that gravity influences the length of jet and the pattern of buckling, and shear rate has a greater effect on buckling frequency.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Acoustics
Marcello Demi
Summary: The diagnostic value of artefactual information in lung ultrasound images is widely recognized, allowing expert physicians to derive important information on pulmonary diseases. This paper specifically addresses the visual characteristic of the length of vertical artifacts, illustrating the impact of various factors on their length through experimental results and theoretical analysis. (c) 2021 Acoustical Society of America.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Mathematics
Yu Zhang, Enying Zhang, Longsuo Li
Summary: This paper proposes an improved split-step composite theta method to study the mean-square stability of stochastic differential equations with a fixed time delay. It is shown that the method exhibits mean-square stability when theta >= 0.5 under the global Lipschitz and linear growth conditions. An approach to improving numerical stability is illustrated through parameter choices, and numerical examples demonstrate the consistency between theoretical and numerical results.
Article
Mathematics, Applied
Muhammad Khalid, Fareeha Sami Khan, Mariam Sultana
Summary: This work utilizes an iterative perturbation method to obtain series solutions of nonlinear fractional differential difference equations. The efficiency and accuracy of the method are demonstrated by numerically solving three famous equations and comparing them with exact solutions. The advantage of PIA lies in eliminating nonlinear terms during Taylor series expansion, resulting in comprehensive and accurate solutions with less computational effort.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2021)
Article
Mechanics
Leia Fan, Eric Lee
Summary: This study theoretically investigates the diffusiophoresis of a perfectly conducting droplet-like liquid metal in electrolyte solutions, focusing on the chemiphoresis component. It is found that a conducting droplet always moves up the chemical gradient toward the region with a higher concentration of ions in chemiphoresis, without being affected by the Marangoni effect or Maxwell traction.
Article
Mathematics
Hayman Thabet, Subhash Kendre, Subhash Unhale
Summary: This paper introduces an effective model for modeling nonlinear phenomena with memory effects using fractional derivatives. The author proposes an iterative fractional partial integro-differential equation (FPIDE) model in a Banach space and presents new theorems on convergence, existence, uniqueness, and error analysis. Furthermore, an extension of the successive approximations method (SAM) is developed to solve FPIDEs with Caputo fractional derivatives, and new results on stability analysis of the solution are shown.
JOURNAL OF MATHEMATICS
(2022)
Article
Chemistry, Multidisciplinary
Kai Xu, Tero-Petri Ruoko, Morteza Shokrani, Dorothea Scheunemann, Hassan Abdalla, Hengda Sun, Chi-Yuan Yang, Yuttapoom Puttisong, Nagesh B. Kolhe, Jose Silvestre Mendoza Figueroa, Jonas O. Pedersen, Thomas Ederth, Weimin M. Chen, Magnus Berggren, Samson A. Jenekhe, Daniele Fazzi, Martijn Kemerink, Simone Fabiano
Summary: The polarity change of the Seebeck coefficient in highly doped polymers is found to be the result of filling and opening of a hard Coulomb gap in the density of states. The formation of multiply charged species and the opening of this hard Coulomb gap are responsible for the inversion of the Seebeck coefficient and the decrease in electrical conductivity. These findings have implications for the molecular design of next-generation conjugated polymers.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Mathematics, Applied
M. Mossa Al-Sawalha, Azzh Saad Alshehry, Kamsing Nonlaopon, Rasool Shah, Osama Y. Ababneh
Summary: In this article, the pantograph delay differential equations are solved using the efficient numerical technique known as Chebyshev pseudospectral method, with the Caputo method employed for fractional derivatives. The proposed method is shown to be effective and accurate through the verification with two examples. Furthermore, it can be applied to other linear and nonlinear fractional delay differential equations due to its innovation and scientific significance.
Article
Mathematics
Elsayed M. E. Zayed, Mohamed E. M. Alngar, Reham M. A. Shohib, Anjan Biswas, Yakup Yildirim, Salam Khan, Luminita Moraru, Simona Moldovanu, Catalina Iticescu
Summary: This paper achieves highly dispersive optical solitons in fiber Bragg gratings using the Kerr law of a nonlinear refractive index. The retrieval is made possible through the generalized Kudryashov's approach and its newer version, resulting in a full spectrum of solitons being recovered.
Article
Mathematics, Interdisciplinary Applications
Mariam Sultana, Uroosa Arshad, Abdel-Haleem Abdel-Aty, Ali Akgul, Mona Mahmoud, Hichem Eleuch
Summary: In this study, the fractional novel analytic method (FNAM) is applied to well-known strongly nonlinear fractional partial differential equations (NFPDEs) with successful results, demonstrating its efficiency. The main objective is to showcase the method's strength in minimizing calculation effort for FPDEs.
FRACTAL AND FRACTIONAL
(2022)
Review
Radiology, Nuclear Medicine & Medical Imaging
Chaya S. Moskowitz, Mattea L. Welch, Michael A. Jacobs, Brenda F. Kurland, Amber L. Simpson
Summary: This article reviews common issues in radiomic research, with a focus on study design and statistical analysis considerations, and proposes approaches to avoid these pitfalls.
