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Intelligent speed adaptation for visibility technology affects drivers’speed selection along curves with sight limitations

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第1期11卷 16-27页

作者： abrar hazoor Alberto Terrafino Leandro L.Di Stasi Marco Bassani Department of Environment Landand Infrastructure EngineeringPolitecnico di TorinoTorino 10129Italy Road Traffic Division Nord UniversityStjørdal 7502Norway Mind Brainand Behavior Research Centre(CIMCYC)University of GranadaGranada 18071Spain

Sight obstructions along road curves can lead to a crash if the driver is not able to stop the vehicle in *** is a particular issue along curves with limited available sight,where speed management is necessary to avoid unsafe situations(e.g.,driving off the road or invading the other traffic lane).To solve this issue,we proposed a novel intelligent speed adaptation(ISA)system for visibility,called V-ISA(intelligent speed adaptation for visibility).It estimates the real-time safe speed limits based on the prevailing sight conditions.V-ISA comes with three variants with specific feedback modalities(1)visual and(2)auditory information,and(3)direct intervention to assume control over the vehicle ***,we investigated the efficiency of each of the three V-ISA variants on driving speed choice and lateral behavioural response along road curves with limited and unsafe available sight distances,using a driving *** also considered curve road geometry(curve direction:rightward ***).Sixty active drivers were recruited for the *** half of them(experimental group)tested the three V-ISA variants(and a V-ISA off condition),the other half always drove with the V-ISA off(validation group).We used a linear mixed-effect model to evaluate the influence of V-ISA on driver *** V-ISA variants were efficient at reducing speeds at entrance points,with no discernible negative impact on driver lateral *** rightward curves,the V-ISA intervening variant appeared to be the most effective at adapting to sight *** of the current study implies that V-ISA might assist drivers to adjust their operating speed as per prevailing sight conditions and,consequently,establishes safer driving conditions.

关键词： Sight distance Intelligent speed adaptation Driver behaviour Road safety Driving simulation Advanced driver assistance systems

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Multi-Step Detection of Simplex and Duplex Wormhole Attacks over Wireless Sensor Networks

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Computers, Materials & Continua 2022年第3期70卷 4241-4259页

作者： abrar M.Alajlan Self-Development Skills Department Common First Year DeanshipKing Saud UniversityRiyadhKSA

Detection of thewormhole attacks is a cumbersome process,particularly simplex and duplex over thewireless sensor networks(WSNs).Wormhole attacks are characterized as distributed passive attacks that can destabilize or disable *** distributed passive nature of these attacks makes them enormously challenging to *** main objective is to find all the possible ways in which how the wireless sensor network’s broadcasting character and transmission medium allows the attacker to interrupt network within the distributed *** further to detect the serious routing-disruption attack“Wormhole Attack”step by step through the different network *** this paper,a new multi-step detection(MSD)scheme is introduced that can effectively detect the wormhole attacks for *** MSD consists of three algorithms to detect and prevent the simplex and duplex wormhole ***,the proposed scheme integrated five detection modules to systematically detect,recover,and isolate wormhole *** results conducted inOMNET++show that the proposedMSDhas lower false detection and false toleration ***,MSDcan effectively detect wormhole attacks in a completely distributed network environment,as suggested by the simulation results.

关键词： Wireless sensor network wormhole attack node validation multi-step detection

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Reinforcing the management of type 1 gastric esophageal varices

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World Journal of Gastroenterology 2024年第19期30卷 2615-2617页

作者： Zain Majid Ghazi abrar Department of Gastroenterology Sindh Institute of Urology and TransplantationKarachi 75500Pakistan

Variceal bleed represents an important complication of cirrhosis,with its presence reflecting the severity of liver *** varices,though less frequently seen than esophageal varices,present a distinct clinical challenge due to its higher intensity of bleeding and associated *** upon the Sarin classification,GOV1 is the most common subtype of gastric varices seen in clinical practice.

关键词： Gastric varices Sarin classification Gastroesophageal varices Cyanoacrylate Endoscopic variceal ligation Trans jugular intrahepatic portosystemic shunt

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A facile preparation of 3D flower-shaped Ni/Al-LDHs covered by β-Ni(OH)2 nanoplates as superior material for high power application

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Chinese Journal of Chemical Engineering 2019年第10期27卷 2526-2534页

作者： abrar Khan Raja Arumugam Senthil Junqing Pan Yanzhi Sun State Key Laboratory of Chemical Resource Engineering Beijing Engineering Center for Hierarchical CatalystsBeijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

In the present study,we propose a novel electrode material ofβ-nickel hydroxide covering nickel/aluminum layered double hydroxides via a facile complexation–precipitation *** as-obtained materials with 3-dimensional nanostructures are further utilized as highly capable electrode material in nickel–metal hydride *** electrochemical test results demonstrated theβ-nickel hydroxide covering nickel/aluminum-layered double hydroxides with 28%ofβ-nickel hydroxide provided a superior specific capacity value of 452 m A·h·g-1 in a current density of 5 A·g-1 using 6 M KOH as electrolyte as compared with other *** addition,the optimized sample displays an outstanding cyclic stability along with a huge specific capacity value of320 m Ah·g-1,and very small decay rate of 3.3%at 50 A·g-1 after 3000 cycles of charge/discharge *** indicate that the newly designed material with nanostructures not only provides an efficient contact interface between electrolyte and active species and facilitates the transport of electrons and ions,but also protects the 3-dimensional nickel/aluminum layered double hydroxides,achieving a high specific capacity,fast redox reaction and excellent long-term cyclic ***,theβ-nickel hydroxide covering nickel/aluminum layered double hydroxides with superior electrochemical performance is predictable to be a gifted electrode material in nickel–metal hydride batteries.

关键词： Nanostructures Nickel hydroxide Cathode material Ultrafast charge–discharge Ni–MH batteries

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Multifaceted Strategies Used by Root-Knot Nematodes to Parasitize Plants-A Review

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Phyton-International Journal of Experimental Botany 2020年第2期89卷 205-215页

作者： Adnan Shakeel abrar Ahmad Khan Mohammad Haris Division of Environmental Botany Department of BotanyAligarh Muslim UniversityAligarh202002India

Root-knot nematodes being omnipresent in agricultural and horticultural soils are tallied among the most important economic pathogens around the *** successful parasitism,these nematodes use various strategies to control and manipulate the host plant’s cell *** strategies include the mole-cular mimicry of some host genes by some nematode secreted effector proteins,secretion of cell wall digesting enzymes and other effector proteins that are responsible for the suppression of defence by the host *** these secretions which are released through the stylet,contribute to the formation of specialized feeding sites or giant *** effector proteins interfere with the normal physiology,cytology and biochemistry of the host *** present review brings novel insights by summarizing some novel effectors that have been discovered recently like MgPDI,MiMIF,MiIDL1,MiISE6,Mg16820,*** also discusses some novel mechanisms through which these effector proteins target different pathways of host plants and thus facilitate nematode parasitism.

关键词： Effector proteins meloidogyne parasitism mimicry

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Classical state feedback controller for nonlinear systems using mean value theorem： closed Ioop-FOC of PMSM motor application

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Frontiers in Energy 2015年第4期9卷 413-425页

作者： abrar ALLAG Abdelhamid BENAKCHA Meriem ALLAG Ismail ZEIN Mohamed Yacine AYAD LGEB Laboratory Department of Electrical Engineering University of Biskra Biskra BP 145 Algeria R&D Industrial Hybrid Vehicle Applications Belfort 90010 France

The problem of state feedback controllers for a class of Takagi-Sugeno （T-S） Lipschitz nonlinear systems is investigated. A simple systematic and useful synthesis method is proposed based on the use of the differential mean value theorem （DMVT） and convex theory. The proposed design approach is based on the mean value theorem （MVT） to express the nonlinear error dynamics as a convex combination of known matrices with time varying coefficients as linear parameter varying （LPV） systems. Using the Lyapunov theory, stability conditions are obtained and expressed in terms of linear matrix inequalities （LMIs）. The controller gains are then obtained by solving linear matrix inequalities. The effectiveness of the proposed approach for closed loop-field oriented control （CL-FOC） of permanent magnet synchronous machine （PMSM） drives is demonstrated through an illustrative simulation for the proof of these approaches. Furthermore, an extension for controller design with parameter uncertainties and perturbation performance is discussed.

关键词： Takagi-Sugeno (T-S) fuzzy systems sectornonlinearity nonlinear controller linear matrix inequality(LMI) approach differential mean value theorem (DMVT),field oriented control (FOC) linear parameter varying(LPV)

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VORI:A framework for testing voice user interface interactability

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High-Confidence Computing 2022年第3期2卷 16-23页

作者： abrar S.Alrumayh Chiu C.Tan Department of Computer and Information Sciences Temple UniversityPhiladelphiaUSA

The ability of Voice User Interface(VUI)to understand how users will express their commands naturally and intuitively is an essential component of user experience,especially when the user is interacting with the VUI for the first *** an automated method for testing the usability of VUI is a challenge for two ***,there are many different ways for a user to express the same intention,e.g.“play some music”,“put some music on”,etc.,that is difficult to determine in ***,many VUI apps today typically rely on the platform service provider(***,Google,etc.)to perform many of the speech recognition and natural language processing tasks,and these services are provided as a ***,it is difficult for the app developer to obtain information about errors and user *** this paper,we propose a framework,VORI,to systematically evaluate the interactability of VUI,as well as a new metric for quantifying the interactability of a *** use VORI to analyze 127 applications on Alexa by sending over 82,931 *** analysis results highlight that 41.7%of apps only accept strict input that has to exactly match the developer’s predefined sample commands with an interactability score of 20%or *** suggests developers should consider a better interactability strategy in the design of VUIs,and more research is needed to further explore the design space to improve the interactability.

关键词： Voice user interface Smart speaker Usability Home voice assistant

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ON A COUPLED INTEGRO-DIFFERENTIAL SYSTEM INVOLVING MIXED FRACTIONAL DERIVATIVES AND INTEGRALS OF DIFFERENT ORDERS

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Acta Mathematica Scientia 2021年第4期41卷 1366-1384页

作者： Bashir AHMAD Ravi P.AGARWAL abrar BROOM Ahmed ALSAEDI Nonlinear Analysis and Applied Mathematics(NAAM)-Research Group Department of MathematicsFaculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia Department of Mathematics Texas A&M UniversityKingsvilleTexas 78363-8202USA

By applying the standard fixed point theorems,we prove the existence and uniqueness results for a system of coupled differential equations involving both left Caputo and right Riemann-Liouville fractional derivatives and mixed fractional integrals,supplemented with nonlocal coupled fractional integral boundary *** example is also constructed for the illustration of the obtained results.

关键词： Fractional differential equations Caputo and Riemann-Liouville fractional derivatives systems existence fixed point theorems

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Characterization of ion irradiated silicon surfaces ablated by laser-induced breakdown spectroscopy

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Chinese Physics B 2018年第8期27卷 505-510页

作者： T Iqbal M abrar M B Tahir M Seemab A Majid S Rafique Department of Physics Faculty of Sciences University of Gujrat Hafiz Hayat Campus Department of Physics Hazara University Mansehra Department of Physics University of Engineering and Technology (UET)Lahore Pakistan

Low energy metallic ions, generated by a Q-switched Nd：YAG laser （1064-nm wavelength, 10-mJ energy, 9-nm 12-ns-pulse width, 1011 W/cm2 intensity） irradiated on a silicon substrate to modify various properties, such as electrical, morphological, and structural modifications. Thomson parabola technique is used to calculate the energy of these metallic ions whereas the electrical conductivity is calculated with the help of Four-point probe. Interestingly circular tracks forming chain like damage trails are produced via these energetic ions which are carefully examined by optical microscopy. It is observed that excitation, ionization, and cascade collisions are responsible for surface modifications of irradiated samples. Four-point probe analysis revealed that the electrical conductivity of substrate has reduced with increasing trend of atomic number of irradiated metallic ions （A1, Ti, Cu, and Au）. The x-ray diffraction analysis elucidated the crystallographic changes leading to reduction of grain size of N-type silicon substrate, which is also associated with the metallic ions used. The decreasing trend of conductivity and grain size is due to thermal stresses, scattering effect, structural imperfections, and non-uniform conduction of energy absorbed by substrate atoms after the ion irradiation.

关键词： ablation Thomson parabola technique four-point probe

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Metabolites Composition of Bacillus subtilis HussainT-AMU Determined by LC-MS and Their Effect on Fusarium Dry Rot of Potato Seed Tuber

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Phyton-International Journal of Experimental Botany 2023年第3期92卷 783-799页

作者： Touseef Hussain abrar A.Khan Heba I.Mohamed Plant Pathology and Nematology Section Department of BotanyAligarh Muslim UniversityAligarhIndia Biological and Geological Sciences Department Faculty of EducationAin Shams UniversityCairoEgypt

Fusarium dry rot is considered to be the most critical soilborne and postharvest disease that damages potato tubers worldwide when they are stored for a long *** study was performed to demonstrate the effect of crude extract,culture filtrate,and cell suspension obtained from the bacterium Bacillus subtilis Hussain T-AMU,on the net house and *** oil-contaminated soil,through the serial dilution method,biosurfactant bacteria were isolated on nutrient agar *** isolate and screen the prospective biosurfactant strain,various biosurfactant screening methods were *** protocols were carried out for morphological,molecular,and chemical *** disease incidences were significantly decreased under net house and field conditions after treatment with biosurfactant extract(20%,70%),culture filtrate(23%,49%),and bacterial cell suspension(46%,27%),*** results indicate a significant effect of *** HussainT-AMU against Fusarium *** characterization of the partially purified extract by gas-chromatography indicated the existence of a high amount of methyl ester fatty *** quantitative analysis determined the presence of lipopeptide-surfactin,fengycin,and iturin in the biosurfactant *** electron microscopy revealed that morphological variation was revealed in the structure of stomata size in leaves and in the mycelia of the pathogen that was *** promising biocontrol agent can be a plausible option for further research and can also be used for the production of green biomolecules at an additional industrial level.

关键词： Biosurfactant biocontrol agents disease severity lipopeptide stomata

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