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Jonathan Borwein Commemorative Conference, JBCC 2017

作者： Hussain, Mumtaz Mahboubi, Seyyed Hassan Motahari, Abolfazl Seyed Department of Mathematics and Statistics La Trobe University PO Box 199 Bendigo3552 Australia Department of Computer Engineering Sharif University of Technology Tehran Iran

ISBN: (纸本)9783030365677

In this paper, the metric theory of Diophantine approximation associated with mixed type small linear forms is investigated. We prove Khintchine–Groshev type theorems for both the real and complex number systems. The motivation for these metrical results comes from their applications in signal processing. One such application is discussed explicitly. © Springer Nature Switzerland AG 2020.

关键词： Numbering systems

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Multi-organ COVID-19 autopsy findings using three-dimensional virtual histology imaging

Multi-organ COVID-19 autopsy findings using three-dimensiona...

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Microscopy Histopathology and Analytics, Microscopy 2022

作者： Li, Guang Fox, Sharon Zhuge, Huiming Summa, Brian Hu, Bihe Brown, J. Quincy Department of Biomedical Engineering 500 Lindy Boggs Center Tulane University New OrleansLA70118 United States Department of Pathology Lsu Health Sciences Center 433 Bolivar StNew Orleans New OrleansLA70112 United States Pathology and Laboratory Medicine Service Southeast Louisiana Veterans Healthcare System 2400 Canal Street New OrleansLA United States Department of Computer Science 307A Stanley Thomas Hall New OrleansLA70118 United States

ISBN: (纸本)9781557528209

Three-dimensional virtual histology images of multiple organ tissues from patients deceased due to COVID-19 were acquired using dual-view inverted selective plane microscopy (diSPIM). Compared to conventional two-dimensional histology slides, these images can provide unique insights into the pathophysiology of COVID-19. © 2022 The Author(s).

关键词： COVID-19

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The performance of random bosonic rotation codes

arXiv

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arXiv 2023年

作者： Totey, Saurabh Kyle, Akira Liu, Steven Barge, Pratik J. Lordi, Noah Combes, Joshua Department of Physics University of Colorado BoulderCO80309 United States Department of Computer Science University of Colorado BoulderCO80309 United States Department of Aerospace Engineering University of Colorado BoulderCO80309 United States Hearne Institute for Theoretical Physics Department of Physics and Astronomy Louisiana State University Baton RougeLA70803 United States Department of Electrical Computer and Energy Engineering University of Colorado BoulderCO80309 United States

Bosonic error correcting codes utilize the infinite dimensional Hilbert space of a harmonic oscillator to encode a qubit. Bosonic rotation codes are characterized by a discrete rotation symmetry in their Wigner functions and include codes such as the cat and binomial codes. We define two different notions of random bosonic rotation codes and numerically explore their performance against loss and dephasing. We find that the best random rotation codes can outperform cat and binomial codes in a certain parameter regime where loss is large and dephasing errors are small. © 2023, CC BY.

关键词： Rotation

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Blockchain for supply chain performance and logistics management

Blockchain for supply chain performance and logistics manage...

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作者： Yang, Juanjuan Ma, Xiuming Crespo, Rubén González Martínez, Oscar Sanjuán School of Economics and Management Guangdong University of Petrochemical Technology Maoming China Propaganda Department of Party Committee of Beibu Gulf University Qinzhou China Department of Engineering School of Engineering and Technology Universidad Internacional de La Rioja Logroño Spain Computer Science Department School of Engineering and Technology Universidad Internacional de La Rioja Spain

The trend of digitalization uses modern relationship models across global supply chain (SC) management. The main objective of this article is to identify SC current problems with the help of the knowledge sharing aspect using blockchain technology. This article addresses selected problems for managing modern SCs with a view to shared knowledge based on information management, effects of product and service on the quality of information, effects of consumer demands occurrences on information flow, outsourcing and globalization, and emerging threats to SCs by concerned parties. These problems are classified as concerns of confidentiality and trust, which are unable to share information among SC stakeholders due to a lack of data standards. To address these problems, a hybridized probabilistic performance and logistics framework (HPP-LF) has been developed that defines the validity of blockchain to help companies throughout the design and deployment of potential blockchain solutions to address the information sharing issues between SC stakeholders. The proposed HPP-LF results are compared with the existing PMOS, MIP, UTAUT, and ILOG techniques. The experimental result shows that the proposed method has better performance when compared with other existing systems. © 2020 John Wiley & Sons, Ltd.

关键词： Supply chains

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Monte Carlo Grid Dynamic Programming: Almost Sure Convergence and Probability Constraints

arXiv

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arXiv 2023年

作者： Ramadan, Mohammad S. Al-Tawaha, Ahmad Shouman, Mohamed Atallah, Ahmed Jin, Ming Mathematics and Computer Science Division Argonne National Laboratory LemontIL60439 United States Departement of Electrical and Computer Engineering Virginia Tech BlacksburgVA United States Aichi Nagoya Japan Department of Mechanical & Aerospace Engineering University of California San Diego La Jolla CA92093-0411 United States

Dynamic Programming (DP) suffers from the wellknown "curse of dimensionality", further exacerbated by the need to compute expectations over process noise in stochastic models. This paper presents a Monte Carlo-based sampling approach for the state space and an interpolation procedure for the resulting value function, dependent on the process noise density, in a "self-approximating" fashion, eliminating the need for ordering or set-membership tests. We provide proof of almost sure convergence for the value iteration (and consequently, policy iteration) procedure. The proposed meshless sampling and interpolation algorithm alleviates the burden of gridding the state space, traditionally required in DP, and avoids constructing a piecewise constant value function over a grid. Moreover, we demonstrate that the proposed interpolation procedure is wellsuited for handling probabilistic constraints by sampling both infeasible and feasible regions. The curse of dimensionality cannot be avoided, however, this approach offers a practical framework for addressing lower-order stochastic nonlinear systems with probabilistic constraints, while eliminating the need for linear interpolations and set membership tests. Numerical examples are presented to further explain and illustrate the convenience of the proposed algorithms. © 2023, CC BY.

关键词： Stochastic models

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Self-driven highly responsive p-n junction In Se heterostructure near-infrared light detector

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Photonics Research 2022年第7期10卷 I0001-I0009页

作者： CHANDRAMAN PATIL CHAOBO DONG HAO WANG BEHROUZ MOVAHHED NOURI SERGIY KRYLYUK HUAIRUO ZHANG ALBERT V.DAVYDOV HAMED DALIR VOLKER J.SORGER Department of Electrical and Computer Engineering George Washington UniversityWashingtonD.C.20052USA Optelligence LLC Upper MarlboroMaryland 20772USA Materials Science and Engineering Division National Institute of Standards and TechnologyGaithersburgMaryland 20899USA Theiss Research Inc.La JollaCalifornia 92037USA

Photodetectors converting light signals into detectable photocurrents are ubiquitously in use *** improve the compactness and performance of next-generation devices and systems,low dimensional materials provide rich physics to engineering the light-matter *** based on two-dimensional(2D)material van der Waals heterostructures have shown high responsivity and compact integration capability,mainly in the visible range due to their intrinsic *** spectral region of near-infrared(NIR)is technologically important,featuring many data communication and sensing *** some initial NIR 2D material-based detectors have emerged,demonstrations of doping-junction-based 2D material photodetectors with the capability to harness the charge-separation photovoltaic effect are yet ***,we demonstrate a 2D p-n van der Waals heterojunction photodetector constructed by vertically stacking p-type and n-type indium selenide(In Se)*** heterojunction charge-separation-based photodetector shows a threefold enhancement in responsivity in the NIR spectral region(980 nm)as compared to photoconductor detectors based on p-or n-only doped In *** show that this junction device exhibits self-powered photodetection operation,exhibits few p A-low dark currents,and is about 3-4 orders of magnitude more efficient than the state-of-the-art foundry-based *** capability opens doors for low noise and low photon flux photodetectors that do not rely on external *** further demonstrate millisecond response rates in this sensitive zero-bias voltage *** sensitive photodetection capability in the technologically relevant NIR wavelength region at low form factors holds promise for several applications including wearable biosensors,three-dimensional(3D)sensing,and remote gas sensing.

关键词： heterojunction light separation

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Topologically protected edge states in triangular lattices

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Physical Review B 2022年第16期106卷 165403-165403页

作者： Robert J. Davis Yun Zhou Dia'aaldin J. Bisharat Prabhakar R. Bandaru Daniel F. Sievenpiper Electrical and Computer Engineering Department University of California San Diego La Jolla California 92093 USA Mechanical and Aerospace Engineering University of California San Diego La Jolla California 92093 USA Advanced Science Research Center The City University of New York New York New York 10031 USA

We describe the possibility for topologically robust edge states existing on interfaces of triangular lattices which are supported by rotational symmetries that are sensitive to boundary conditions. Such states are trivial from the perspective of Berry curvature, but result instead from an interplay between crystalline symmetries and finite boundary effects. We show such states comprise a distinct topological phase, provided the gauge-dependent symmetries are maintained. Such a model describes a number of recent bosonic experimental demonstrations on triangular lattices, the physics for which has thus far eluded explanation.

关键词： Crystal symmetry Edge states Symmetry protected topological states Topological phases of matter Triangular lattice Tight-binding model Topological tools

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Shape-aware contrastive deep supervision for esophageal tumor segmentation from CT scans

Shape-aware contrastive deep supervision for esophageal tumo...

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IEEE International Conference on Bioinformatics and Biomedicine (BIBM)

作者： Qiangguo Jin Hui Cui Changming Sun Jiapeng Huang Ping Xuan Yiyue Xu Linlin Wang Leilei Cao Leyi Wei Ran Su School of Software Northwestern Polytechnical University Shaanxi China Yangtze River Delta Research Institute of Northwestern Polytechnical University Taicang China Department of Computer Science and Information Technology La Trobe University Melbourne Australia CSIRO Data61 Sydney Australia Department of Computer Science School of Engineering Shantou University Guangdong China Department of Radiation Oncology Shandong Cancer Hospital and Institute Shandong First Medical University and Shandong Academy of Medical Sciences Shandong China Innovation Center of Yangtze River Delta Zhejiang University Zhejiang China School of Software Shandong University Shandong China School of Computer Software College of Intelligence and Computing Tianjin University Tianjin China

Accurate tumor segmentation is crucial for esophageal cancer radiotherapy treatment planning. The low contrast among the esophagus, tumors, and surrounding tissues, and irregular tumor shapes limit the performance of automatic segmentation methods. In this paper, we aim to exploit the irregular shapes of tumors to facilitate accurate segmentation. We propose a simple and pluggable shape-aware contrastive deep supervision network (SCDSNet) with shape-aware regularization and voxel-to-voxel contrastive deep supervision. Specifically, the shape-aware regularization with an uncertainty minimization strategy encourages the precise predictions of an additional shape-aware head. The voxel-to-voxel contrastive deep supervision enhances the multi-scale shape-tumor contrast for better voxel-to-voxel prediction of shapes. The proposed method is simple and highly pluggable, which can easily be extended to other frameworks. Further, we establish a large in-house dataset on esophageal cancer to validate the effectiveness of our proposed method. The quantitative and qualitative experimental results demonstrate the effectiveness of SCDSNet on the esophageal cancer dataset.

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STRIDE-based Cyber Security Threat Modeling for IoT-enabled Precision Agriculture Systems

arXiv

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arXiv 2022年

作者： Al Asif, Md Rashid Hasan, Khondokar Fida Islam, Md Zahidul Khondoker, Rahamatullah Department of Computer Science and Engineering University of Barishal Bangladesh Centre for Cyber Security Research & Innovation RMIT University 124 La Trobe Street MelbourneVIC3000 Australia Department of Information and Communication Technology Islamic University Bangladesh Department of Business Computing THM University of Applied Sciences Friedberg Germany

The concept of traditional farming is changing rapidly with the introduction of smart technologies like the Internet of Things (IoT). Under the concept of smart agriculture, precision agriculture is gaining popularity to enable Decision Support System (DSS)-based farming management that utilizes widespread IoT sensors and wireless connectivity to enable automated detection and optimization of resources. Undoubtedly the success of the system would be impacted on crop productivity, where failure would impact severely. Like many other cyber-physical systems, one of the growing challenges to avoid system adversity is to ensure the system's security, privacy, and trust. But what are the vulnerabilities, threats, and security issues we should consider while deploying precision agriculture? This paper has conducted a holistic threat modeling on component levels of precision agriculture's standard infrastructure using popular threat intelligence tools STRIDE to identify common security issues. Our modeling identifies a noticing of fifty-eight potential security threats to consider. This presentation systematically presented them and advised general mitigation suggestions to support cyber security in precision agriculture. © 2022, CC BY-NC-SA.

关键词： Cybersecurity

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Approximating Geometric Knapsack via L-packings

Approximating Geometric Knapsack via L-packings

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作者： Gálvez, Waldo Grandoni, Fabrizio Ingala, Salvatore Heydrich, Sandy Khan, Arindam Wiese, Andreas Department of Computer Science Technical University of Munich Garching Germany Chair of Approximation Algorithms IDSIA USI-SUPSI via la Santa 1 Lugano-Viganello6962 Switzerland Department of Optimization Fraunhofer Institute for Industrial Mathematics Kaiserslautern Germany Department of Computer Science and Automation Indian Institute of Science Bangalore India Department of Industrial Engineering Center for Mathematical Modeling Universidad de Chile Chile

We study the two-dimensional geometric knapsack problem, in which we are given a set of n axis-aligned rectangular items, each one with an associated profit, and an axis-aligned square knapsack. The goal is to find a (non-overlapping) packing of a maximum profit subset of items inside the knapsack (without rotating items). The best-known polynomial-time approximation factor for this problem (even just in the cardinality case) is 2+ϵ [Jansen and Zhang, SODA 2004]. In this article we present a polynomial-time 17/9+ϵ © 2021 Association for Computing Machinery.

关键词： Profitability

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