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Comparative Study of probabilistic and Least-Squares Methods for Developing predictive Models

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Effect of particle stress tensor in simulations of dense gas-particle flows in fluidized beds

Open Journal of Applied Sciences（应用科学） 2024年第7期 1775页

作者： Boribo Kikunda philippe Thierry Nsabimana Jules raymond Kala Jeremie Ndikumagenge Longin Ndayisaba

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particuology 2018年第3期16卷 31-43页

作者： Mohammad Reza Haghgoo Donald J. Bergstrom raymond J. Spiteri Department of Mechanical Engineering University of Saskatchewan Saskatoon SK SFN 5A9 Canada Department of Computer Science University of Saskatchewan Saskatoon. SK S7N 5C9 Canada

A two-fluid model based on the kinetic theory of granular flow for the rapid-flow regime and the Coulomb friction law for the quasi-static regime is applied to predict the hydrodynamics of dense gas-particle flow in a three-dimensional fluidized bed. Two different models for the particle stress tensor that use different constitutive equations in the elastic-inertial regime are examined to assess their ability to predict bed dynamics. To understand how particle stress models affect structural features of the flow, a quantitative analysis is performed on some important aspects of the mechanics of bubbling beds that have received relatively little attention in the literature. Accordingly, different flow regimes are identified in the context of fluidized beds through the dimensionless inertial number, and the main characteristics of each regime are discussed. In addition, how the particle stress tensor manifests itself in the bubble characteristics, natural frequency of the bed, and particle Reynolds stress are investigated, all of which help to better understand the complex dynamics of the fluidized bed. The numerical results are validated against pub- lished experimental data and demonstrate the significant role of the stress tensor in the elastic-inertial regime.

关键词： Two-fluid model Inertial number Fluidized bed Flow regime particle Reynolds stress MFIX

Determinants of Modern Contraceptive Uptake among the Youth in Akuse Township in the Lower Manya Krobo Municipality, ghana

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The Role of Music Therapy in Supporting Intellectually Disabled Youth in Senegal

Health（健康） 2024年第1期

作者： raymond Mawusi Amenya Stephen Manortey Millicent Ofori Boateng Sandra Kushitor Edward Sutherland

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SecBCS: a secure and privacy-preserving blockchain-based crowdsourcing system

Health（健康） 2024年第5期 521页

作者： raymond Birane Youm Kadidiatou Diarra Mathias pouye Jean Augustin Diégane Tine

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Science China(Information Sciences) 2020年第3期63卷 20-33页

作者： Chao LIN Debiao HE Sherali ZEADALLY Neeraj KUMAR Kim-Kwang raymond CHOO Key Laboratory of Aerospace Information Security and Trusted Computing Ministry of EducationSchool of Cyber Science and Engineering Wuhan University State Key Laboratory of Cryptology College of Communication and Information University of Kentucky Department of Computer Science and Engineering Thapar University Department of Information Systems and Cyber Security and Department of Electrical and Computer Engineering University of Texas at San Antonio

A robust and scalable crowd management infrastructure is crucial in addressing operational challenges when deploying high-density sensors and actuators in a smart city. While crowdsourcing is widely used in crowd management, conventional solutions, such as Upwork and Amazon Mechanical Turk, generally depend on a trusted third-party platform. There exist several potential security concerns(e.g., sensitive leakage, single point of failure and unfair judgment) in such a centralized paradigm. Hence, a recent trend in crowdsourcing is to leverage blockchain(a decentralized ledger technology) to address some of the existing limitations. A small number of blockchain-based crowdsourcing systems(BCSs) with incentive mechanisms have been proposed in the literature, but they are generally not designed with security in mind. Thus, we study the security and privacy requirements of a secure BCS and propose a concrete solution(i.e., SecBCS)with a prototype implementation based on JUICE.

关键词： crowdsourcing blockchain secure privacy-preserving smart contract

Network coding theory:An introduction

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Frontiers of Electrical and Electronic Engineering in China 2010年第3期5卷 363-390页

作者： raymond W.YEUNg Institute of Network Coding and Department of Information Engineering The Chinese University of Hong KongHong KongChina

For a long time,store-and-forward had been the transport mode in network *** other words,information had been regarded as a commodity that only needs to be routed through the network,possibly with replication at the intermediate *** the late 1990’s,a new concept called network coding fundamentally changed the way a network can be *** the paradigm of network coding,information can be processed within the network for the purpose of *** was demonstrated that compared with store-and-forward,the network throughput can generally be increased by employing network *** then,network coding has made significant impact on different branches of information *** impact of network coding has gone as far as mathematics,physics,and *** expository work aims to be an introduction to this fast-growing subject with a detailed discussion of the basic theoretical results.

关键词： network coding network communications wireless communications cryptography

Cardiovascular Magnetic Resonance Imaging 2008

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Ethereum smart contract security research:survey and future research opportunities

丛书名： Contemporary Cardiology

2008年

作者： raymond Y. Kwong

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Frontiers of Computer Science 2021年第2期15卷 143-160页

作者： Zeli WANg Hai JIN Weiqi DAI Kim-Kwang raymond CHOO Deqing ZOU National Engineering Research Center for Big Data Technology and System Services Computing Technology and System LabClusters and Grid Computing LabHubei Engineering Research Center on Big Data SecurityWuhan430074China School of Computer Science and Technology Huazhong University of Science and TechnologyWuhan430074China School of Cyber Science and Engineering Huazhong University of Science and TechnologyWuhan430074China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen518057China Department of Information Systems and Cyber Security University of Texas at San AntonioSan AntonioTX78249-0631USA

Blockchain has recently emerged as a research trend,with potential applications in a broad range of industries and *** particular successful Blockchain technology is smart contract,which is widely used in commercial settings(e.g.,high value financial transactions).This,however,has security implications due to the potential to financially benefit from a security incident(e.g.,identification and exploitation of a vulnerability in the smart contract or its implementation).Among,Ethereum is the most active and ***,in this paper,we systematically review existing research efforts on Ethereum smart contract security,published between 2015 and ***,we focus on how smart contracts can be maliciously exploited and targeted,such as security issues of contract program model,vulnerabilities in the program and safety consideration introduced by program execution *** also identify potential research opportunities and future research agenda.

关键词： smart contract security blockchain vulnerability unreliable data

personalized nutrition for people with diabetes and at risk of diabetes has begun

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Journal of Future Foods 2022年第3期2卷 193-202页

作者： raymond Chen guoxun Chen Department of Biochemistry University of Texas at AustinAustin 78705USA Department of Nutrition University of Tennessee at KnoxvilleKnoxville 37996USA

Food and nutrition are essential parts for the management of blood glucose of patients with diabetes and other metabolic *** results of recent human clinical studies have shown that the blood glucose levels change differently in different people in response to the same standardized *** phenomenon shows the challenges to find a one-size-fits-all approach to combat *** the development of technologies,personalized nutrition/precision nutrition has gradually become more practical in order to treat individual *** aim of this review article is to summarize personalized nutrition’s progress and potential in treating the diabetes *** have searched pubMed to identify relevant articles and found that personalized nutrition on multiple factors associated with an individual has started to draw attention to scientifi c *** seminal studies have shown that healthy adults show differential responses of postprandial blood glucose levels to the same standardized *** clinical trials have started to integrate sensor technologies such as continuous glucose monitoring and personal data such as genomic sequences and microbiome to provide personalized nutrition advice,and shown promises in intervention and management of type 2 *** appears that the interplays of diets and genomes,gut microbiome,gut transit time,insulin sensitivity,cultural,social,and economic factors should all be considered to create a personalized treatment for an individual’s chronic metabolic *** probably can be achieved through the integration of personalized nutrition and personalized food intervention with the development of technologies and advances in food and nutrition *** research should be anticipated soon.

关键词： Blood glucose Type 2 diabetes Insulin Microbiome precision nutrition personaliz