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Epidemiologic Evolution Platform Using Integrated Modeling and Geographic Information System

Computers, Materials & Continua 2021年第5期67卷 1645-1663页

作者： Adrian Brezulianu Oana Geman Muhammad Arif Iuliana Chiuchisan Octavian Postolache Guojun Wang Faculty of Electronics Telecommunications and Information TechnologyGheorghe Asachi Technical University from IasiIasi700050Romania Faculty of Electrical Engineering and Computer Sciences Stefan cel Mare University of SuceavaSuceava720229Romania School of Computer Science Guangzhou UniversityGuangzhou510006China

At the international level, a major effort is being made to optimizethe flow of data and information for health systems management. The studiesshow that medical and economic efficiency is strongly influenced by the levelof development and complexity of implementing an integrated system of epidemiological monitoring and modeling. The solution proposed and describedin this paper is addressed to all public and private institutions involved inthe fight against the COVID-19 pandemic, using recognized methods andstandards in this field. The Green-Epidemio is a platform adaptable to thespecific features of any public institution for disease management, based onopen-source software, allowing the adaptation, customization, and furtherdevelopment of “open-source” applications, according to the specificities ofthe public institution, the changes in the economic and social environment andits legal framework. The platform has a mathematical model for the spreadof COVID-19 infection depending on the location of the outbreaks so thatthe allocation of resources and the geographical limitation of certain areascan be parameterized according to the number and location of the real-timeidentified outbreaks. The social impact of the proposed solution is due to theplanned applications of information flow management, which is a first stepin improving significantly the response time and efficiency of people-operatedresponse services. Moreover, institutional interoperability influences strategicsocietal factors.

关键词： Epidemiology evolution service-oriented architecture pandemic geographic information system epidemiological modeling

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Schwarzschild-de-Sitter Solution in Quantum Gauge Theory of Gravity

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Communications in Theoretical Physics 2007年第5期47卷 843-846页

作者： gheorghe Zet Camelia Popa Doina Partenie Department of Physics ＂Gh. Asachi＂ Technical University Iasi 700050 Romania Faculty of Physics ＂A1. I. Cuza＂ University Iasi 700506 Romania

We use the theory based on the gravitational gauge group G to obtain a spherical symmetric solution of the field equations for the gravitational potentials on a Minkowski space-time. The gauge group G is defined and then we introduce the gauge-covariant derivative Dμ. The strength tensor of the gravitational gauge field is also obtained and a gauge-invariant Lagrangian including the cosmological constant is constructed. A model whose gravitational gauge potentials A^α μ （x） have spherical symmetry, depending only on the radial coordinate τ is considered and an analytical solution of these equations, which induces the Schwarzschild-de-Sitter metric on the gauge group space, is then determined. All the calculations have been performed by GR Tensor II computer algebra package, running on the Maple V platform, along with several routines that we have written for our model.

关键词： gauge theory gravitational field spherical symmetry

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Dynamics Behaviors of a Laser Produced Plasma:Theoretical Approach

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Journal of Modern Physics 2013年第7期4卷 1013-1021页

作者： L.R.Manea C.Nejneru D.Matasaru C.I.Axinte M.Agop Faculty of Textile Leather Engineering and Industrial Management“Gheorghe Asachi”Technical University of IasiIasiRomania Faculty of Materials Science and Engineering “Gheorghe Asachi”Technical University of IasiIasiRomania Department of Electronics and Telecommunication “Gheorghe Asachi”Technical University of IasiIasiRomania Lasers Atoms and Molecules Physics LaboratoryUniversity of Science and TechnologyLilleFrance Physics Department “Gheorghe Asachi”Technical University of IasiIasiRomania

Assuming that plasma particles are moving on continuous and non-differentiable curves, some dynamic properties in plasma ablation are analyzed via scale-relativity theory: the splitting of plasma plume, multi-peak structures, at various distances from the target surface and plasma oscillations through self-similarity. Our theoretical results are in good agreement with the experimental ones.

关键词： Plasma Ablation Fractal Curves Plume Splitting Plasma Oscillations

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Deep Learning-Based Model for Detection of Brinjal Weed in the Era of Precision Agriculture

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Computers, Materials & Continua 2023年第10期77卷 1281-1301页

作者： Jigna Patel Anand Ruparelia Sudeep Tanwar Fayez Alqahtani Amr Tolba Ravi Sharma Maria Simona Raboaca Bogdan Constantin Neagu Department of Computer Science and Engineering Institute of TechnologyNirma UniversityAhmedabad382481India Software Engineering Department College of Computer and Information SciencesKing Saud UniversityRiyadh12372Saudi Arabia Computer Science Department Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Centre for Inter-Disciplinary Research and Innovation University of Petroleum and Energy StudiesDehradun248001India Doctoral School University Politehnica of BucharestBucharest060042Romania National Research and Development Institute for Cryogenic and Isotopic Technologies-ICSI Rm ValceaRamnicu Valcea240050Romania Power Engineering Department Gheorghe Asachi Technical University of IasiIasi700050Romania

The overgrowth of weeds growing along with the primary crop in the fields reduces crop *** solutions like hand weeding are labor-intensive,costly,and time-consuming;farmers have used *** application of herbicide is effective but causes environmental and health ***,Precision Agriculture(PA)suggests the variable spraying of herbicides so that herbicide chemicals do not affect the primary *** by the gap above,we proposed a Deep Learning(DL)based model for detecting Eggplant(Brinjal)weed in this *** key objective of this study is to detect plant and non-plant(weed)parts from crop *** the help of object detection,the precise location of weeds from images can be *** dataset is collected manually from a private farm in Gandhinagar,Gujarat,*** combined approach of classification and object detection is applied in the proposed *** Convolutional Neural Network(CNN)model is used to classify weed and non-weed images;further DL models are applied for object *** have compared DL models based on accuracy,memory usage,and Intersection over Union(IoU).ResNet-18,YOLOv3,CenterNet,and Faster RCNN are used in the proposed *** outperforms all other models in terms of accuracy,i.e.,88%.Compared to other models,YOLOv3 is the least memory-intensive,utilizing 4.78 GB to evaluate the data.

关键词： Precision Agriculture Deep Learning brinjal weed detection ResNet-18 YOLOv3 CenterNet Faster RCNN

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Investigations of a nanostructured FeMnSi shape memory alloy produced via severe plastic deformation

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International Journal of Minerals,Metallurgy and Materials 2016年第11期23卷 1315-1322页

作者： gheorghe Gurau Carmela Gurau Vedamanickam Sampath Leandru gheorghe Bujoreanu Faculty of Engineering "Dun?rea de Jos" University of Galati Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Faculty of Materials Science and Engineering "Gheorghe Asachi" Technical University of Ia?i

Low-cost iron-based shape memory alloys（SMAs） show great potential for engineering applications. The developments of new processing techniques have recently enabled the production of nanocrystalline materials with improved properties. These developments have opened avenues for newer applications for SMAs. The influence of severe plastic deformation induced by the high-speed high-pressure torsion（HSHPT） process on the microstructural evolution of an Fe–Mn–Si–Cr alloy was investigated. Transmission electron microscopic analysis of the alloy revealed the existence of nanoscale grains with an abundance of stacking faults. The high density of dislocations characteristic of severe plastic deformation was not observed in this alloy. X-ray diffraction studies revealed the presence of ε-martensite with an HCP crystal structure and γ-phase with an FCC structure.

关键词： iorn manganese silicon alloys shape memory effect nanostructured materials martensite plastic deformation

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Electrochemical behaviour of Ti alloys containing Mo and Ta as β-stabilizer elements for dental application

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Transactions of Nonferrous Metals Society of China 2013年第12期23卷 3829-3836页

作者： Daniel MARECI Romeu CHELARIU Georgiana BOLAT Adrian CAILEAN Viorel GRANCEA Daniel SUTIMAN Faculty of Chemical Engineering and Environmental Protection "Gheorghe Asachi" Technical University of Iasi Faculty of Materials Science and Engineering "Gheorghe Asachi" Technical University of Iasi

Corrosion behaviour of the studied Ti12Mo and Ti60Ta alloys with the same Mo equivalent values （12%, mass fraction） together with the currently used metallic biomaterials Cp-Ti were investigated for dental applications. The electrochemical properties of the samples were examined using electrochemical techniques： such as open-circuit potential, potentiodynamic polarization curves and electrochemical impedance spectroscopy （EIS）, in two electrochemical media of artificial saliva and fluoridated artificial saliva （0.1%fluoride ions, F-） at 37 °C. Fluoride is commonly included in toothpastes, odontological gels and dental rinses to prevent dental caries and relieve dental sensitivity. The passive behaviour for all the titanium samples is observed for both solutions. The Ti60Ta alloy appears to possess superior corrosion resistance than the Ti12Mo and Cp-Ti in both electrochemical media.

关键词： Ti12Mo Ti60Ta Cp-Ti open-circuit potential potentiodynamic polarization electrochemical impedance spectroscopy

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Deep Learning-Based Robust Morphed Face Authentication Framework for Online Systems

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Computers, Materials & Continua 2023年第10期77卷 1123-1142页

作者： Harsh Mankodiya Priyal Palkhiwala Rajesh Gupta Nilesh Kumar Jadav Sudeep Tanwar Osama Alfarraj Amr Tolba Maria Simona Raboaca Verdes Marina Department of Computer Science and Engineering Institute of TechnologyNirma UniversityAhmedabad382481India Computer Science Department Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Doctoral School University Politehnica of BucharestBucharest060042Romania Department of Hydrogen and Fuel Cell National Research and Development Institute for Cryogenics and Isotopic TechnologiesRamnicu Valcea240050Romania Department of Building Services Faculty of Civil Engineering and Building ServicesTechnical University of Gheorghe AsachiIasi700050Romania

The amalgamation of artificial intelligence(AI)with various areas has been in the picture for the past few *** has enhanced the functioning of several services,such as accomplishing better budgets,automating multiple tasks,and data-driven *** hassle-free polling has been one of ***,at the onset of the coronavirus in 2020,almost all worldly affairs occurred online,and many sectors switched to digital *** allows attackers to find security loopholes in digital systems and exploit them for their lucrative *** paper proposes a three-layered deep learning(DL)-based authentication framework to develop a secure online polling *** provides a novel way to overcome security breaches during the face identity(ID)recognition and verification process for online polling *** verification is done by training a pixel-2-pixel Pix2pix generative adversarial network(GAN)for face image reconstruction to remove facial objects present(if any).Furthermore,image-to-image matching is done by implementing the Siamese network and comparing the result of various metrics executed on feature embeddings to obtain the outcome,thus checking the electorate credentials.

关键词： Artificial intelligence discriminator generator Pix2pix GANs Kullback-Leibler(KL)-divergence online voting system Siamese network

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Gauge Gravitational Field in a Fractal Space-Time

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Communications in Theoretical Physics 2008年第11期50卷 1197-1204页

作者： M. Agop Camelia Popa Anca Harabagiu Department of Physics University of Athens Athens 15771 Greece Department of Physics ＂Gh. Asachi＂ Technical University Blvd. Mangeron 700029 Iasi Romania Faculty of Physics Department of Theoretical Physics ＂AI.I. Cuza＂ University Blvd. Carol No. 1 700506 Iasi Romania

Considering the fractal structure of space-time, the scale relativity theory in the topological dimension DT = 2 is built. In such a conjecture, the geodesics of this space-time imply the hydrodynamic model of the quantum mechanics. Subsequently, the gauge gravitational field on a fractal space-time is given. Then, the gauge group, the gauge-covariant derivative, the strength tensor of the gauge field, the gauge-invariant Lagrangean, the field equations of the gauge potentials and the gauge energy-momentum tensor are determined. Finally, using this model, a Reissner- Nordstrom type metric is obtained.

关键词： fractal space-time scale relativity theory gauge gravitational field Reissner-Nordstrom metric

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Reissner-Nordstrom-de-Sitter-type Solution by a Gauge Theory of Gravity

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Chinese Physics Letters 2008年第10期25卷 3570-3573页

作者： V. Enache Camelia Popa V. Paun M. Agop Department of Theoretical Physics Faculty of Physics Al.I.Cuza University Blvd. Carol No.l 700506 Iasi Romania Department of Physics Faculty of Applied Sciences Politehnica University of Bucharest I 313 Splaiul lndependentei Street 060042 Bucharest Romania Department of Physics Gh. Asachi Technical University Blvd. Mangeron 700029 Iasi Romania Department of Physics University of Athens Athens 15771 Greece

We use the theory based on a gravitational gauge group （Wu＇s model） to obtain a spherical symmetric solution of the field equations for the gravitational potential on a Minkowski spacetime. The gauge group, the gauge covariant derivative, the strength tensor of the gauge feld, the gauge invariant Lagrangean with the cosmological constant, the field equations of the gauge potentiaIs with a gravitational energy-momentum tensor as well as with a tensor of the field of a point like source are determined. Finally, a Reissner-Nordstrom-de Sitter-type metric on the gauge group space is obtained.

关键词： WEYL-DIRAC THEORY GRAVITATIONAL-FIELD EQUATIONS Gauge Theory

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Biochar for removal of dyes in contaminated water:an overview

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Biochar 2022年第1期4卷 1024-1039页

作者： Saravanan Praveen Josephraj Jegan Thillainayagam Bhagavathi Pushpa Ravindiran Gokulan Laura Bulgariu Department of Civil Engineering CMR Institute of TechnologyBengaluru 560037KarnatakaIndi Department of Civil Engineering University College of EngineeringRamanathapuram 623513Tamil NaduIndia Department of Civil Engineering GMR Institute of TechnologyRajamSrikakulam 532127Andhra PradeshIndia Department of Environmental Engineering and Management “Cristofor Simionescu”Faculty of Chemical Engineering and Environmental ProtectionGheorghe Asachi Technical University of Iaşi700050 IaşiRomania

In recent years,numerous investigations have explored the use of biochar for the removal of organic and inorganic pollutants in single component *** is a carbonaceous material produced from waste biomass,mainly by thermochemical conversion *** material was used as a biosorbent in various removal processes of pollutants,and its efficiency was strongly influenced by the characteristics of the biomass *** review integrates the recent works of literature to understand the biosorption behaviour of dyes onto biochar-based *** factors influencing the biosorption process and the mechanisms describing the biosorption behaviours of the biochar have been broadly ***,the biosorption models can be used to comprehend the competence of the biochar as biosorbent for dye removal techniques.

关键词： Biomass Bioremediation Biosorption Biosorbent

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