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Accurate Location Estimation of Smart Dusts Using Machine Learning

Computers, Materials & Continua 2022年第6期71卷 6165-6181页

作者： Shariq bashir Owais Ahmed Malik Daphne Teck Ching Lai Institute of Applied Data Analytics(IADA) Universiti Brunei Darussalam(UBD)GadongBE1410Brunei Darussalam School of Digital Sciences(SDS) Universiti Brunei Darussalam(UBD)GadongBE1410Brunei Darussalam

Traditional wireless sensor networks(WSNs)are not suitable for rough terrains that are difficult or impossible to access by *** dust is a technology that works with the combination of many tiny sensors which is highly useful for obtaining remote sensing information from rough *** tiny sensors are sprinkled in large numbers on rough terrains using airborne distribution through drones or aircraftwithout manually setting their *** it is clear that a number of remote sensing applications can benefit from this technology,but the small size of smart dust fundamentally restricts the integration of advanced hardware on tiny *** raises many challenges including how to estimate the location of events sensed by the smart *** solutions on estimating the location of events sensed by the smart dusts are not suitable for monitoring rough terrains as these solutions depend on relay sensors and laser patterns which have their own limitations in terms of power constraint and uneven *** study proposes a novel machine learning based localization algorithm for estimating the location of *** approach utilizes timestamps(time of arrival)of sensed events received at base stations by assembling them into a multidimensional vector and input to a machine learning classifier for estimating the *** to the unavailability of real smart dusts,we built a simulator for analysing the accuracy of the proposed approach formonitoring forest *** experiments on the simulator show reasonable accuracy of the approach.

关键词： Smart dust sensor localization remote sensing machine learning algorithms Internet of Things sensor applications

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Computing Topological Invariants of Triangular Chandelier Lattice

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Computers, Materials & Continua 2020年第6期63卷 1119-1132页

作者： Nazeran Idrees Raghisa Khalid Fozia bashir Farooq Sumiya Nasir Department of Mathematics Government College University FaisalabadFaisalabad38000Pakistan Department of Mathematics Al-Imam Mohammad Ibn Saud Islamic UniversityRiyadh11432Saudi Arabia College of Science and Human Studies Prince Mohammad Bin Fahd UniversityKhobar Dhahran34754Saudi Arabia

A numerical parameter mathematically derived from the graph structure is a topological *** topological index is the first actual choice in QSAR research and these indices are used to build the correlation model between the chemical structures of various chemicals ***,we investigate some old degree-based topological indices like Randic index,sum connectivity index,ABC index,GA index,1st and 2nd Zagreb indices,modified second Zagreb index,redefined version of 1st,2nd and 3rd Zagreb indices,hyper and augmented Zagreb indices,forgotten index and symmetric division degree index,and some new degree-based indices like SK index,SK1 index,SK2 index,and AG1 index of triangular chandelier-lattice(TCL).The results are generalized by using edge partition and closed formulas for topological indices of triangular chandelier-lattice are analysed.

关键词： Topological index Zagreb index graph triangular chandelier-lattice network

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Performance of aerogel as a thermal insulation material towards a sustainable design of residential buildings for tropical climates in Nigeria

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Energy and Built Environment 2022年第3期3卷 291-315页

作者： Aminu Wali bashir Brenda Chaves Coelho Leite Departamento de Engenharia de Construção Civil Escola Politécnica da Universidade de São PauloSão Paulo 05508-010Brasil

The building sector accounts for nearly 40%of global energy *** Nigeria,more than two-thirds of the consumption comes from residential *** efficiency measures through the adoption of insulation materials are tools that could crash the peak demand of energy in buildings while improving its thermal comfort and aerogel is considered as the most effective material for insulation,owing to its unique thermal *** this paper,we present the performance of aerogel as a thermal insulation material towards a sustainable design of residential buildings for tropical climates in ***,a typical residential building in the tropical region was modeled with conventional materials utilized in the region and was later modified through the application of aerogel material on various surfaces of the model.A whole building energy simulation was then carried out in each variation and the outcome was compared to effectively conclude on the significance of aerogel in terms of thermal comfort improvement and energy consumption *** show that aerogel had the highest influence when inserted in the attic and floor slabs of the designed model.A reduction of more than 6%was attained in the recorded indoor mean air and operative temperatures while still maintaining an acceptable humidity *** energy consumption,a reduction of more than 15%was ***,the high price of aerogel may hinder its application on the studied building but could be a good investment where climate change and sustainability are of high importance and less concern is given to *** demonstrated significant potential with respect to both thermal comfort improvement and energy consumption reduction on the designed *** outcome of the study is hoped to serve as a base reference for the insulation of residential buildings with similar climate and characteristics to the adopted case building.

关键词： Aerogels Building energy consumption Energy efficiency Thermal insulation materials Thermal comfort Building energy simulation

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Efficacy and safety of pharmacotherapeutic interventions used in visceral leishmaniasis clinical trials:A systematic review and network meta-analysis

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Asian Pacific Journal of Tropical Medicine 2022年第8期15卷 343-353,I0001-I0010页

作者： Aamir bashir Gautam Sahu Ishfaq Rashid Pramil Tiwari Department of Pharmacy Practice National Institute of Pharmaceutical Education and ResearchS.A.S.Nagar Mohali160062PunjabIndia

Objective:To compare the efficacy and safety outcomes of different antileishmanial agents used in visceral leishmaniasis clinical ***:A systematic literature search in PubMed/MEDLINE,EMBASE,Cochrane,and Google Scholar was done using keywords“randomized controlled trials”,“antileishmanial”and“visceral leishmaniasis”.The outcomes included were cure rate,overall withdrawals,relapse rate,and treatment-emergent adverse *** estimates through the frequentist network meta-analysis approach were presented as OR with 95%*** plots were used for identifying the“best intervention”based on p-scores obtained using the surface under the cumulative *** risk of bias was evaluated by using Pedro ***:Seventeen randomized controlled trials with 5143 visceral leishmaniasis patients who received different antileishmanial agents(amphotericin B,miltefosine,paromomycin,meglumine antimoniate,sodium stibogluconate,sitamaquine,and pentavalent antimonials)and met the inclusion criteria were *** efficacy outcomes of the treatments,the rankogram of the network meta-analysis revealed that paromomycin(p-score=0.8148)has the highest probability of being best in the pool,followed by sodium stibogluconate(OR 0.82,95%CI 0.24-2.79,p-score=0.7580),amphotericin B+miltefosine(OR 0.66,95%CI 0.02-19.04,p-score=0.7329)as compared to the remaining treatments;however,the most of the treatment-emergent adverse events were reported with ***:Paromomycin reported the highest cure rates,while the maximum treatment-emergent adverse events were seen with sitamaquine.

关键词： Visceral leishmaniasis Treatment Efficacy Safety Network meta-analysis

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Modeling of a long sand-pack for heavy crude oil through depletion tests utilizing methane gas

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Petroleum 2021年第2期7卷 188-198页

作者： bashir Busahmin Rama Rao Karri Stephen Tyson Morteza Jami Petroleum&Chemical Engineering Universiti Teknologi BruneiBrunei Darussalam

With the enormous increase in the demand for crude oil,and decrease in the resources of conventional oil reservoirs,there is a great need to understand heavy or foamy oil-gas drive mechanism to maximize the oil and gas *** analyze the real movement of non-viscous heavy oil flow,the characteristic features of the oil-gas mixture has to be estimated to forecast the future potential supply from a heavy oil *** important question in heavy oil flow under solution gas drive is whether the behaviour of depletion tests can be simulated to model the heavy oil flow *** main objective of this research is to develop a reliable numerical model for modelling heavy oil flow calibrated with controlled solution gas drive experiments,and that makes a novelty in this *** this paper,CMG-STARS model which is capable of simulating solution gas drive tests that matched the research *** heavy oil recovery model can determine the relative permeability curves for oil and gas in the dualphase system using Corey’s *** a depletion rate of 0.0418 psi/min,the maximum cumulative oil and gas production was observed to be 13,000 cm^(3)and 8500 cm^(3),*** results from the bottom hole pressure and the block pressure simulation runs indicate that the fluid properties such as surface tension plays a significant role in the gas bubble *** results are promising,and helps to understand the complex behaviour of heavy oil reservoirs and thus can improve heavy oil recovery.

关键词： Depletion rate Simulation Gas fluid dual-phase Sand-pack Heavy oil reservoir Methane gas

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Cytotoxicity assessment of a gold nanoparticle-chitosan nanocomposite as an efficient support for cell immobilization:comparison with chitosan hydrogel and chitosan-gelatin

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BIOCELL 2014年第1期38卷 11-16页

作者： Mohammad Reza RAMEZANI Hossein naderi-MANESH Hossain-Ali RAFIEEPOUR Department of Biophysics Faculty of Biological SciencesTarbiat Modares UniversityTehranIran Department of Biotechnology Faculty of ChemistryUniversity of KashanKashanIran

Cell-based biosensors have become a research hotspot in the biosensors and bioelectronics fields. The main feature of cell-based biosensors is immobilization of living cells on the surface of transducers. Different types of polymers which are used as scaffolds for cell growth should be biocompatible and should have reac- tive functional groups for further attachment of biomolecules. In this work, cell attachment and proliferation on chitosan hydrogel, chitosan-gelatin and gold nanoparticle-chitosan nanocomposite membranes was stud- ied. Characterization of the membranes was performed using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Cytotoxicity assessment on HEK293 cells was carried out for all mem- branes using the MTT assay. Cell morphology and viability were assessed to evaluate cell attachment and pro- liferation. Regarding cell studies, the findings revealed that none of the membranes induced cytotoxic effects. However, the data showed that gold nanoparticle nanocomposite membranes improved HEK293 attachment and adhesion more than other membranes, indicating that it provides an effective surface for immobilizing cells for sensing applications.

关键词： gold nanoparticle-chitosan nanocomposite HEK293 cells cytotoxic effects scanning electron microscopy

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Why is graphene an extraordinary material? A review based on a decade of research

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Frontiers of Materials Science 2022年第2期16卷 1-39页

作者： Sachin Sharma Ashok KUMAR Shahid bashir Kasi RAMESH Subramaniam RAMESH Centre for Ionics University of Malaya Department of PhysicsFaculty of ScienceUniversiti MalayaKuala Lumpur 50603Malaysia Higher Institution Centre of Excellence(HICoE) UM Power Energy Dedicated Advanced Centre(UMPEDAC)Level 4Wisma R&DUniversiti MalayaJalan Pantai BaharuKuala Lumpur 59990Malaysia

During this decade,graphene which is a thin layer of carbon material along at ease with synthesis and functionalization has become a hot topic of research owing to excellent mechanical strength,very good current density,high thermal conductivity,superior electrical conductivity,large surface area,and good electron *** research on graphene has exponentially accelerated specially when Geim and Novoselov developed and analyzed *** this basis,for industrial application,researchers are exploring different techniques to produce high-quality ***,reviewed in this article is a brief introduction to graphene and its derivatives along with some of the methods developed to synthesize graphene and its prospective applications in both research and *** this work,recent advances on applications of graphene in various fields such as sensors,energy storage,energy harvesting,high-speed optoelectronics,supercapacitors,touch-based flexible screens,and organic light emitting diode displays have been summarized.

关键词： graphene graphene oxide electrochemical sensor fuel cell supercapacitor dye-sensitized fuel cell lithium battery energy storage

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Strategic Bidding in Distribution Network Electricity Market Focusing on Competition Modeling and Uncertainties

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Journal of Modern Power Systems and Clean Energy 2021年第3期9卷 561-572页

作者： Mehrdad Mallaki Mehdi S.naderi Mehrdad Abedi Saeed D.Manshadi Gevork B.Gharehpetian the Electrical Engineering Department Amirkabir University of TechnologyTehranIran Iran Grid Secure Operation Research Centre Amirkabir University of TechnologyTehranIran theDepartment of Electrical and Computer Engineering San Diego State UniversitySan DiegoUSA

Developing the electricity market at the distribution level can facilitate the energy transactions in distribution networks with a high penetration level of distributed energy resources(DERs)and microgrids(MGs).However,the lack of comprehensive information about the marginal production cost of competitors leads to uncertainties in the optimal bidding strategy of *** electricity demand within the network and the price in the wholesale electricity market are two other sources of the *** this paper,a day-ahead-market-based framework for managing the energy transactions among MGs and other participants in distribution networks is introduced.A game-theory-based method is presented to model the competition and determine the optimal bidding strategy of participants in the *** optimization technique is employed to capture the uncertainties in the marginal cost of ***,the uncertainties in demand are modeled using a scenario-based stochastic *** results ob-tained from case studies reveal the merit of considering competition modeling and uncertainties.

关键词： Competition modeling bidding strategy distribution network electricity market microgrid uncertainty robust optimization

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Weathering and accumulation of trace elements in the soils of the Porali Plain, Balochistan: repercussions in agriculture

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Acta Geochimica 2024年第2期43卷 214-234页

作者： Maria Kaleem Erum bashir Shahid Naseem Tahir Rafique Bushra Shahab Department of Geology University of KarachiKarachi 75270Pakistan Applied Chemistry Research Centre PCSIR Laboratories ComplexKarachi 75280Pakistan

This study is theﬁrst attempt to assess the nature of the soil,especially on the western side of the Porali Plain in Balochistan;a new emerging agriculture hub,using weathering and pollution indices supplemented by multi-variate analysis based on geochemical *** outcomes of this study are expected to help farmers in soil manage-ment and selecting suitable crops for the ***-ﬁve soil samples were collected,mainly from the arable land of the Porali *** drying and coning-quarter-ing,soil samples were analyzed for major and trace ele-ments using the XRF technique;sieving and hydrometric methods were employed for granulometric ***-mated data were analyzed using Excel,SPSS,and Surfer software to calculate various indices,correlation matrix,and spatial *** granulometric analysis showed that 76%of the samples belonged to loam types of soil,12%to sand type,and 8%to silt *** indices:CIA,CIW,PIA,PWI,WIP,CIX,and ICV were calculated to infer the level of *** indices reﬂect mod-erate to intense weathering;supported by K_(2)O/AI_(2)O_(3),Rb/K_(2)O,Rb/Ti,and Rb/Sr *** of the geo-ac-cumulation and Nemerow Pollution indices pinpoint rela-tively high concentrations of Pb,Ni,and Cr concentration in the *** correlation matrix and Principal Compo-nent Analysis show that the soil in this study area is mainly derived from the weathering of igneous rocks of Bela Ophiolite(Cretaceous age)and Jurassic sedimentary rocks of Mor Range having SEDEX/MVT type *** may result in the undesirable accumulation of certain trace elements which adversely affects crops.

关键词： Weathering indices Pollution indices Accumulation Repercussions Trace elements Multivariate analyses Porali Plain Balochistan

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Intelligent cache and buffer optimization for mobile VR adaptive transmission in 5G edge computing networks

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Digital Communications and Networks 2024年第5期10卷 1234-1244页

作者： Junchao Yang Ali Kashif bashir Zhiwei Guo Keping Yu Mohsen Guizani Chongqing Key Laboratory of Intelligent Perception and BlockChain Technology School of Artificial Intelligence Chongqing Technology and Business University Department of Computing and Mathematics Manchester Metropolitan University Woxsen School of Business Woxsen University Department of Computer Science and Mathematics Lebanese American University Graduate School of Science and Engineering Hosei University Machine Learning Department Mohamed Bin Zayed University of Artificial Intelligence (MBZUAI)

Virtual Reality(VR) is a key industry for the development of the digital economy in the *** VR has advantages in terms of mobility,lightweight and cost-effectiveness,which has gradually become the mainstream implementation of *** this paper,a mobile VR video adaptive transmission mechanism based on intelligent caching and hierarchical buffering strategy in Mobile Edge Computing(MEC)-equipped 5G networks is proposed,aiming at the low latency requirements of mobile VR services and flexible buffer management for VR video adaptive *** support VR content proactive caching and intelligent buffer management,users' behavioral similarity and head movement trajectory are jointly used for viewpoint *** tile-based content is proactively cached in the MEC nodes based on the popularity of the VR ***,a hierarchical buffer-based adaptive update algorithm is presented,which jointly considers bandwidth,buffer,and predicted viewpoint status to update the tile chunk in client ***,according to the decomposition of the problem,the buffer update problem is modeled as an optimization problem,and the corresponding solution algorithms are ***,the simulation results show that the adaptive caching algorithm based on 5G intelligent edge and hierarchical buffer strategy can improve the user experience in the case of bandwidth fluctuations,and the proposed viewpoint prediction method can significantly improve the accuracy of viewpoint prediction by 15%.

关键词： Virtual reality Adaptive transmission Edge cache Buffer management 5G Mobile edge computing

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