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search and Rescue Optimization with machine Learning Enabled Cybersecurity model

Computer systems science & Engineering 2023年第5期45卷 1393-1407页

作者： Hanan Abdullah mengash Jaber s.Alzahrani majdy m.Eltahir Fahd N.Al-Wesabi Abdullah mohamed manar Ahmed Hamza Radwa marzouk Department of Information systems College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Industrial Engineering College of Engineering at AlqunfudahUmm Al-Qura UniversitySaudi Arabia Department of Information systems College of Science&Art at MahayilKing Khalid UniversitySaudi Arabia Department of Computer science College of Science&Art at MahayilKing Khalid UniversitySaudi Arabia Research Centre Future University in EgyptNew Cairo11745Egypt Department of Computer and self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia Department of mathematics Faculty of ScienceCairo UniversityGiza12613Egypt

Presently,smart cities play a vital role to enhance the quality of living among human beings in several ways such as online shopping,e-learning,ehealthcare,*** the benefits of advanced technologies,issues are also existed from the transformation of the physical word into digital word,particularly in online social networks(OsN).Cyberbullying(CB)is a major problem in OsN which needs to be addressed by the use of automated natural language processing(NLP)and machine learning(mL)*** article devises a novel search and rescue optimization with machine learning enabled cybersecurity model for online social networks,named sRO-mLCOsN *** presented sRO-mLCOsN model focuses on the identification of CB that occurred in social networking *** sRO-mLCOsN model initially employs Glove technique for word embedding ***,a multiclass-weighted kernel extreme learning machine(m-WKELm)model is utilized for effectual identification and categorization of ***,search and Rescue Optimization(sRO)algorithm is exploited to fine tune the parameters involved in the m-WKELm *** experimental validation of the sRO-mLCOsN model on the benchmark dataset reported significant outcomes over the other approaches with precision,recall,and F1-score of 96.24%,98.71%,and 97.46%respectively.

关键词： Cybersecurity cyberbullying social networking machine learning search and rescue optimization

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Comparative analysis of extreme ultraviolet solar radiation proxies during minimum activity levels

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Earth and Planetary Physics 2023年第5期7卷 540-547页

作者： A.G.Elias C.R.martinis B.F.de Haro Barbas F.D.medina B.s.Zossi m.Fagre T.Duran Laboratorio de Ionosfera Atmosfera Neutra y MagnetosferaFacultad de Ciencias Exactas y Tecnologia(FACET)Universidad Nacional de Tucuman(UNT)Tucuman 4000Argentina Instituto de Física del Noroeste Argentino Consejo Nacional de Investigaciones Cientificas y Tecnicas(CONICET)-UNTTucuman 4000Argentina Center for space Physics Astronomy DepartmentBoston UniversityMA 02215USA CONICET Tucuman 4000Argentina Laboratorio de Telecomunicaciones Departamento de ElectricidadElectrónica y ComputaciónFACETUNTTucuman4000Argentina Departamento de Física Universidad Nacional del Sur(UNS)Bahia Blanca 8000Argentina Instituto de Física del sur CONICET-UNSBahia Blanca 8000Argentina

Four extreme ultraviolet(EUV)solar radiation proxies(magnesium II core-to-wing ratio(mgII),Lymanαflux(Fα),10.7-cm solar radio flux(F10.7),and sunspot number(Rz))were analyzed during the last four consecutive solar activity minima to investigate how they differ during minimum periods and how well they represent solar EUV *** variability within each minimum and between minima was compared by considering monthly means.A comparison was also made of their role in filtering the effect of solar activity from the critical frequency of the ionospheric F2 layer,foF2,which at mid to low latitudes depends mainly on EUV solar *** last two solar cycles showed unusually low EUV radiation levels according to the four *** the connection between the EUV“true”variation and that of solar proxies,according to the foF2 filtering analysis,mgII and Fαbehaved in a more stable and suitable way,whereas Rz and F10.7 could be overestimating EUV levels during the last two minima,implying they would both underestimate the inter-minima difference of EUV when compared with the first two minima.

关键词： solar EUV radiation solar minimum foF2 solar activity solar EUV proxy

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A prospective randomized study to define the role of low dose continuous prophylactic antibiotics and anti-adherence agents in altering the microbial colonization related to indwelling double‐J stents

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Asian Journal of Urology 2021年第3期8卷 269-274页

作者： Kumar madhavan sanchit Rustagi Rahul Jena Uday Pratap singh m.s.Ansari Aneesh srivastava Rakesh Kapoor sanjoy Kumar sureka Department of Urology and Renal Transplantation SGPGIMSLucknowIndia

Objective:Despite conflicting evidence,it is common practice to use continuous antibiotic prophylaxis(CAP)in patients with indwelling double-J(DJ)*** extracts and d-mannose have been shown to prevent colonization of the urinary *** evaluated their role in this ***:We conducted a prospective randomized study to evaluate patients with indwelling DJ stents following urological *** were randomized into three *** A(n=46)received CAP(nitrofurantoin 100 mg once daily[OD]).Group B(n=48)received cranberry extract 300 mg and d-mannose 600 mg twice daily(BD).Group C(n=40)received no *** stents were removed between 15 days and 45 days after *** groups were compared in terms of colonization of stent and urine,stent related symptoms and febrile urinary tract infections(UTIs)during the period of indwelling stent and until 1 week after ***:In Group A,9(19.5%)patients had significant bacterial growth on the *** was 8(16.7%)in the Group B and 5(12.5%)in Group C(p-value:0.743).However,the culture positivity rate of urine specimens showed a significant difference(p-value:0.023)with Group B showing least colonization of urine compared to groups A and *** was no statistically significant difference in the frequency of stent related symptoms(p-value:0.242)or febrile UTIs(p-value:0.399)among the ***:Prophylactic agents have no role in altering bacterial growth on temporary indwelling DJ stent,stent related symptoms or febrile *** extract may reduce the colonization of urinary tract,but its clinical significance needs further evaluation.

关键词： Antibiotic Prophylaxis stent Cranberry Infection

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Growth mechanisms of Ag and Cu nanodendrites via Galvanic replacement reactions

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Progress in Natural science:materials International 2021年第1期31卷 141-151页

作者： Jialu Chen Jemima J.Davies Alister s.Goodfellow sarah m.D.Hall Helena G.Lancaster Xinyu Liu Cameron J.Rhodes Wuzong Zhou school of Chemistry University of St Andrews

Dendritic silver and copper crystals were produced via Galvanic replacement reactions on zinc and aluminum plates, respectively. The growth orientations of these metals were determined using electron microscopy. The results showed that a fast crystal growth associated with a high concentration of metal cations led to kinetically controlled growth along the axes of the cubic close-packed structures. However, a slow growth rate resulted in thermodynamically controlled growth along the [111] axis. The crystal growth was not found to rely upon the direct deposition of metal cations at crystallographic sites on crystal facets, but instead, hydrated metal cations deposited on the crystal surface to form an amorphous coating layer, followed by the reduction of metal cations and crystallization at the crystal/coating interface. Twin defects and stacking faults were often observed across the whole particle and commonly observed1/3{422} diffraction spots were explained by stacking faults rather than by the possible presence of any superstructures. The present work offers evidences to claim that both the crystal growth rate and Coulomb interaction between negatively charged crystal surface and metal cations play an important role in the formation of metal dendrites in replacement reactions.

关键词： silver nanodendrite Copper nanodendrite Electron microscopy stacking fault Crystal growth

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On COVID-19-safety ranking of seats in intercontinental commercial aircrafts:A preliminary multiphysics computational perspective

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Building simulation 2021年第6期14卷 1585-1596页

作者： Prathamesh s.Desai Nihar sawant Andrew Keene mechanical Engineering W.M.Rice UniversityHoustonTXUSA Courant Institute of mathematical sciences New York UniversityNew YorkNYUSA Department of mechanical Engineering Carnegie Mellon UniversityPAUSA

The evolution of coronavirus disease(COVID-19)into a pandemic has severely hampered the usage of public transit *** a post-COVID-19 world,we may see an increased reliance on autonomous cars and personal rapid transit(PRT)systems,with inherent physical distancing,over buses,trains and aircraft for intracity,intercity,and interstate ***,air travel would continue to be the dominant mode of intercontinental transportation for *** this study,we perform a comprehensive computational analysis,using ANsYs Fluent,of typical intercontinental aircraft ventilation systems to determine the seat where environmental factors are most conducive to human comfort with regards to air quality,protection from orally or nasally released pollutants such as CO_(2)and coronavirus,and thermal comfort *** velocity,temperature,and air pollutant concentration emitted from the nose/mouth of fellow travelers are considered for both Boeing and Airbus *** each plane,first class,business class,and economy class sections were *** present conclusions as to which is the optimum seat in each section of each plane and provide the data of the environmental conditions to support our *** findings may be used by the general public to decide which seat to occupy for their next intercontinental ***,the commercial airliners can use such a model to plan the occupancy of the aircraft on long-duration intercontinental flights(viz.,Airbus A380 and Boeing B747).

关键词： COVID-19 airborne coronavirus particles multiphysics simulation indoor air quality thermal comfort intercontinental aircraft

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An Analysis of soil Coring strategies to Estimate Root Depth in maize(Zea mays)and Common Bean(Phaseolus vulgaris)

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Plant Phenomics 2020年第1期2卷 347-366页

作者： James D.Burridge Christopher K.Black Eric A.Nord Johannes A.Postma Jagdeep s.sidhu Larry m.York Jonathan P.Lynch The Pennsylvania state University Department of Plant ScienceTyson BuildingUniversity ParkPA 16802USA Department of Biology Greenville University315 E.College AveGreenvilleIL 62246USA Forschungszentrum Jülich GmbH Institute of Bio-and Geosciences-Plant Sciences(IBG-2)52425 JülichGermany Noble Research Institute LLC2510 Sam Noble ParkwayArdmoreOK 73401USA

A soil coring protocol was developed to cooptimize the estimation of root length distribution(RLD)by depth and detection of functionally important variation in root system architecture(RsA)of maize and *** functional-structural model OpensimRoot was used to perform in silico soil coring at six locations on three different maize and bean RsA *** were compared to two seasons of field soil coring and one *** one-sided T-test(TOsT)analysis of in silico data suggests a between-row location 5 cm from plant base(location 3),best estimates whole-plot RLD/D of deep,intermediate,and shallow RsA phenotypes,for both maize and *** discriminant analysis indicates location 3 has~70%categorization accuracy for bean,while an in-row location next to the plant base(location 6)has~85%categorization accuracy in *** of field data suggests the more representative sampling locations vary by year and *** silico and field studies suggest location 3 is most robust,although variation is significant among seasons,among replications within a field season,and among field soil coring,trench,and *** propose that the characterization of the RLD profile as a dynamic rhizo canopy effectively describes how the RLD profile arises from interactions among an individual plant,its neighbors,and the pedosphere.

关键词： mays soil Root

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关于维量设计的形式定义及应用

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软件 1989年第5期10卷 359-372页

作者： BE－s.,m 韦吉

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V_2O_5·nH_2O nanosheets and multi-walled carbon nanotube composite as a negative electrode for sodium-ion batteries

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Journal of Energy Chemistry 2019年第3期28卷 145-151页

作者： Ahmed s. Etman Junliang sun Reza Younesi Department of materials and Environmental Chemistry (mmK) Stockholm University Department of Chemistry Faculty of science Alexandria University College of Chemistry and molecular Engineering Peking University ?ngstr?m Advanced Battery Centre Department of Chemistry-?ngstr?m Laboratory Uppsala University

Two dimensional(2D) transition metal oxides and chalcogenides demonstrate a promising performance in sodium-ion batteries(sIBs) application. In this study, we investigated the use of a composite of freeze dried V_2O_5·nH_2O nanosheets and multi-walled carbon nanotube(mWCNT) as a negative electrode material for sIBs. Cyclic voltammetry(CV) results indicated that a reversible sodium-ion insertion/deinsertion into the composite electrode can be obtained in the potential window of 0.1–2.5 V vs. Na^+/Na. The composite electrodes delivered sodium storage capacities of 140 and 45 m Ah g^(-1) under applied current densities of 20 and 100 m A g^(-1), respectively. The pause test during constant current measurement showed a raise in the open circuit potential(OCP) of about 0.46 V, and a charge capacity loss of ～10%. These values are comparable with those reported for hard carbon electrodes. For comparison, electrodes of freeze dried V_2O_5·nH_2O nanosheets were prepared and tested for sIBs application. The results showed that the mWCNT plays a significant role in the electrochemical performance of the composite material.

关键词： sodium-ion batteries Anode materials Vanadium pentoxide nanosheets Composite materials

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Automated dual source systems for measurement of DC resistance standards

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Journal of measurement science and Instrumentation 2019年第2期10卷 109-115页

作者： Rasha s m Ali m Helmy A Raouf Dept.of Electrical Quantities metrology National Institute for Standards(NIS)Giza 12211-136Egypt

A new system for measuring low-ohmic standard resistors through a dual current sources bridge is *** is used for low resistance measurements from 1 mΩto 1Ωat 1∶1 ratio,which is suitable for the laboratories without cryogenic current comparators(CCC)or direct current comparators(DCC)*** of this bridge is evaluated by comparing its measured values with the unknown resistor values obtained by another *** accuracy of the introduced bridge is in the level of 10-5 for the 1 mΩresistor,and in the level of 10-4 for the 10 mΩ,100 mΩand 1Ω***,a dual voltage sources system for the measurement of DC standard resistors from 1 kΩto 100 mΩis also *** this system,a modification is made on the modified Wheatstone bridge to evaluate its performance by adding another digital multimeter to measure the ratio between the unknown and the standard resistors *** bridge is verified by comparing the measured values of 10 kΩresistor obtained by the two methods with its actual *** bridge accuracy is in the level of 10-6 except for the 1 kΩresistor,and the bridge asymmetry is also *** is found the asymmetry is in the level of 10-6 for the resistors from 10 kΩto 100 mΩand in the level of 10-5 for 1 kΩ*** introduced bridges operations are controlled by LabVIEW programs designed specially for this purpose,and the expanded uncertainty is also evaluated for all measurement results.

关键词： direct current comparators voltage null detector modified Wheatstone bridge ratio technique resistance measurements uncertainty

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Epistaxis in end stage liver disease masquerading as severe upper gastrointestinal hemorrhage

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World Journal of Gastroenterology 2014年第38期20卷 13993-13998页

作者： marine Camus Dennis m Jensen Jason D matthews Gordon V Ohning Thomas O Kovacs Rome Jutabha Kevin A Ghassemi Gustavo A machicado Gareth s Dulai CURE Hemostasis Research Group CURE Digestive Diseases Research CenterDavid Geffen School of Medicine at University of California Division of Digestive Diseases at University of California Los AngelesRonald Reagan Medical Center Department of Gastroenterology Lariboisiere Hospital CURE Hemostasis Research Group CURE Digestive Diseases Research CenterDavid Geffen School of Medicine at University of CaliforniaLos AngelesLos AngelesCA 90095United States Gastroenterology Division at VA Greater Los Angeles Healthcare system Hunterdon Gastrointestinal Associates

AIm: To describe the prevalence, diagnosis, treatment, and outcomes of end stage liver disease (EsLD) patients with severe epistaxis thought to be severe upper gastrointestinal hemorrhage (UGIH).

关键词： Epistaxis Upper gastrointestinal bleeding End stage liver disease Cirrhosis Nasogastric tube Liver transplantation Digestive bleeding Nasal packing Coagulopathy

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