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Improving resource-constrained IoT device lifetimes by mitigating redundant transmissions across heterogeneous wireless multimedia of things

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Digital Communications and Networks 2022年第5期8卷 778-790页

作者： muhammad Salah ud din muhammad atif ur rehman Rehmat Ullah Chan-Won Park Dae Ho Kim Byung-seo Kim Department of Electronics&Computer Engineering Hongik UniversitySejong City30016South Korea Department of Computing&Mathematics Manchester Metropolitan University United Kingdom Cardiff School of Technologies Cardiff Metropolitan UniversityCardiffCF52YBUnited Kingdom Electronics and Telecommunications Research Institute Daejeon34129South Korea Department of Software and Communications Engineering Hongik UniversitySejong City30016South Korea

In Wireless Multimedia Sensor Networks(WMSNs),nodes capable of retrieving video,audio,images,and small scale sensor data,tend to generate immense traffic of various *** energy-efficient transmission of such a vast amount of heterogeneous multimedia content while simultaneously ensuring the quality of service and optimal energy consumption is ***,we propose a Power-Efficient Wireless Multimedia of Things(PE-WMoT),a robust and energy-efficient cluster-based mechanism to improve the overall lifetime of *** a PE-WMoT,nodes declare themselves Cluster Heads(CHs)based on available *** cluster formation and CH declaration processes are completed,the Sub-Cluster(SC)formation process triggers,in which application base nodes within close vicinity of each other organize themselves under the administration of a Sub-Cluster Head(SCH).The SCH gathers data from member nodes,removes redundancies,and forwards miniaturized data to its respective ***-WMoT adopts a fuzzy-based technique named the analytical hierarchical process,which enables CHs to select an optimal SCH among available SCs.A PE-WMoT also devises a robust scheduling mechanism between CH,SCH,and child nodes to enable collision-free data *** results revealed that a PE-WMoT significantly reduces the number of redundant packet transmissions,improves energy consumption of the network,and effectively increases network throughput.

关键词： Clustering WMSN WSN IoTs Resource-constrained Fuzzy AHP Sub clustering MAC Energy efficiency Network lifetime

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Web GIS-Based Temporal Analysis of Climatic Factors Impacting Heat Stroke in Karachi

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Journal of Geographic Information System 2024年第1期16卷 61-69页

作者： Ali atif Mahnoor rehman muhammad Butt Syed Mahmood Shahid Ghazi Rashid Mehmood Department of Management Victoria University Sydney Australia Department of Geography Government College University Lahore Pakistan Department of Space Science University of the Punjab Lahore Pakistan Centre of Geographic Information System University of The Punjab Lahore Pakistan

This study focuses on the impact of climate change, specifically the increasing threat of heatwaves, in Pakistan, with a particular emphasis on the city of Karachi. The Pakistan Meteorological Department (PMD) analysed a century of climatic data to reveal warming trends, attributing them to human-induced factors. The vulnerability of Pakistan to climate change is highlighted, given its warm climate and location in a region where temperature increases are expected to surpass global averages. The study examines the past three decades, noting a significant rise in the frequency of hot days, especially in Karachi, where heatwaves have become more prevalent. The aims and objectives of the study involve identifying temporal changes in temperature, rainfall, humidity, and wind speed from 1984 to 2014 in Karachi. The literature review emphasizes the health implications of heatwaves, citing increased mortality during such events globally. The study incorporates a comprehensive temporal analysis, addressing gaps in previous research by considering multiple climate indicators responsible for heatwaves. The methodology involves statistical analyses, including linear regression and Pearson correlation, applied to temperature data and urbanization parameters. Results indicate an increasing trend in heat index temperature, with heatwave vulnerability peaking in the last three decades. Heat Index Temperature Anomalies show a clear surge, emphasizing the need for new indices to control critical heat stress conditions. The study concludes that tropical climate variability, particularly heat index, is linked to extreme hot days, urging measures to reduce population vulnerability. The findings underscore the importance of policy strategies, such as integrated coastal zone management, to mitigate the adverse health effects of heatwaves in Karachi’s vulnerable population.

关键词： IPCC Heat Wave Heat Index PMD

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First-principles calculation of the structural,electronic,and magnetic properties of cubic perovskite RbXF3(X = Mn,V,Co,Fe)

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Chinese Physics B 2016年第11期25卷 486-491页

作者： muhammad Raza ur rehman Hashmi muhammad Zafar M Shakil atif Sattar Shabbir Ahmed S A Ahmad Simulation Laboratory Department of Physics The Islamia University of Bahawalpur 63100 Pakistan Department of Physics Hafiz Hayat Campus University of Gujrat Gujrat Pakistan

First-principles calculations by means of the full-potential linearized augmented plane wave method using the generalized gradient approximation with correlation effect correction（GGA＋U） within the framework of spin polarized density functional theory（DFT＋U） are used to study the structural,electronic,and magnetic properties of cubic perovskite compounds RbXF3（X = Mn,V,Co,and Fe）.It is found that the calculated structural parameters,i.e.,lattice constant,bulk modulus,and its pressure derivative are in good agreement with the previous *** results reveal that the strong spin polarization of the 3d states of the X atoms is the origin of ferromagnetism in *** energies and the magnetic moments of RbXF3 have also been *** calculated electronic properties show the half-metallic nature of RbCoF3 and RbFeF3,making these materials suitable for spintronic applications.

关键词： cubic metallic perovskite modulus correction linearized ferromagnetic augmented instance spheres

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Syntheses,Spectral Studies and Bioanalyses of Some Triorganotin(IV) Complexes of Cephlaxine

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Chinese Journal of Structural Chemistry 2008年第7期27卷 846-852页

作者： Wajid rehman Bakhtiar muhammad Farman Ali Sardar atif Department of Chemistry Hazara University MansehraPakistan

Five novel triorganotin（IV） complexes have been synthesized by refluxing trimethyl, triethyl, tributyl, triphenyl and tribenzyltin chloride with Cephlaxine. These compounds were characterized by spectroscopic （IR, IH, 13C, 119Sn NMR） techniques and elemental analysis. The results obtained through these techniques are in full agreement with the proposed 1：1 stoichiometry. The synthesized compounds were than tested against various microorganisms and fungi. The results of new products obtained showed that the triphenyltin（IV） complex displayed promising activity against all types of bacteria and fungi used while all other compounds showed significant antibacterial and antifungal activity.

关键词： cephlaxine spectra triorganotin activity bacteria

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Deep Trajectory Classification Model for Congestion Detection in Human Crowds

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Computers, Materials & Continua 2021年第7期68卷 705-725页

作者： Emad Felemban Sultan Daud Khan atif Naseer Faizan ur rehman Saleh Basalamah Department of Computer Engineering College of Computing and Information SystemsUmm Al-Qura UniversityMakkahSaudi Arabia Department of Computer Science National University of TechnologyIslamabadPakistan Science and Technology Unit Umm Al-Qura UniversityMakkahSaudi Arabia Institute of Consulting Research and Studies Umm Al-Qura UniversityMakkahSaudi Arabia

In high-density gatherings,crowd disasters frequently occur despite all the safety *** detection of congestion in human crowds using automated analysis of video footage can prevent crowd *** work on the prevention of crowd disasters has been based on manual analysis of video *** methods also measure crowd congestion by estimating crowd ***,crowd density alone cannot provide reliable information about *** paper proposes a deep learning framework for automated crowd congestion detection that leverages pedestrian *** proposed framework divided the input video into several temporal *** then extracted dense trajectories from each temporal segment and converted these into a spatio-temporal image without losing information.A classification model based on convolutional neural networks was then trained using spatio-temporal ***,we generated a score map by encoding each point trajectory with its respective class *** this,we obtained the congested regions by employing the non-maximum suppression method on the score ***,we demonstrated the proposed framework’s effectiveness by performing a series of experiments on challenging video sequences.

关键词： Crowd congestion trajectory classification crowd analysis

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Foliar Application of Phosphorus Enhances Photosynthesis and Biochemical Characteristics of Maize under Drought Stress

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Phyton-International Journal of Experimental Botany 2021年第2期90卷 503-514页

作者： Zahoor Ahmad Ejaz Ahmad Waraich muhammad Zia ur rehman muhammad Ashar Ayub muhammad Usman Hesham Alharby atif Bamagoos Celaleddin Barutçular muhammad Ali Raza FatihÇiğ Ayman El Sabagh Department of Field Crops Faculty of AgricultureÇukurova UniversityAdana01330Turkey Department of Botany University of Central Punjab(UCP)Punjab Group of CollegesBahawalpur63100Pakistan Department of Agronomy University of AgricultureFaisalabad38000Pakistan Institute of Soil and Environmental Science University of AgricultureFaisalabad38000Pakistan Department of Biological Sciences Faculty of ScienceKing Abdulaziz UniversityJeddah21577Saudi Arabia College of Agronomy Sichuan Agricultural UniversityChengdu611130China Department of Field Crops Faculty of AgricultureSiirt UniversitySiirt56100Turkey Department of Agronomy Faculty of AgricultureUniversity of KafrelsheikhKafrelsheikh33516Egypt

Water is essential for the growth period of crops;however,water unavailability badly affects the growth and physiological attributes of crops,which considerably reduced the yield and yield components in ***,a pot experiment was conducted to investigate the effect of foliar phosphorus(P)on morphological,gas exchange,biochemical traits,and phosphorus use efficiency(PUE)of maize(Zea mays L.)hybrids grown under normal as well as water deficit situations at the Department of Agronomy,University of Agriculture Faisalabad,Pakistan in *** different treatments(control and P@8 kg ha^(−1))and four hybrids(Hycorn,31P41,65625,and 32B33)of maize were tested by using a randomized complete block design(RCBD)with three *** showed that the water stress caused a remarkable decline in total soluble protein(9.7%),photosynthetic rate(9.4%)and transpiration rate(13.4%),stomatal conductance(10.2%),and internal CO_(2)rate(20.4%)comparative to well-watered *** increase of 37.1%,36.8%,and 24.5%were recorded for proline,total soluble sugar,and total free amino acid,***,foliar P application minimized the negative impact of drought by improving plant growth,physio-biochemical attributes,and PUE in maize plants under water stress *** the hybrids tested,the hybrid 6525 performed better both under stress and non-stress *** outcomes confirmed that the exogenous application of P improved drought stress tolerance by modulating growth,physio-biochemical attributes,and PUE of maize hybrids.

关键词： Photosynthetic attributes biochemical characters water stress foliar P Maize

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Investigation of functional,physical,mechanical and thermal properties of TiO2 embedded polyester hybrid composites:A design of experiment(DoE)study

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Progress in Natural Science:Materials International 2018年第3期28卷 266-274页

作者： muhammad Azeem Munawar Dirk Wolfram Schubert Shahzad Maqsood Khan muhammad Atiq ur rehman Nafisa Gulld atif Islam Aneela Sabir muhammad Shafiq Bilal Haider Mudassar Azam Saba urooge Khan Monika M.Voigt Institute of Polymer Materials Friedrich-Alexander-University Department of Polymer Engineering and Technology University of the Punjab Bavarian Polymer Institute Institute of Biomaterials Friedrich-Alexander-University Institute of Chemical Engineering and Technology University of the Punjab

This paper presents a study on the Design of Experiments(Do E) approach to optimize the fabrication parameters of titania(TiO2) embedded glass fiber reinforced polyester hybrid composites(HCs). HCs of unsaturated polyester resin(UPR) were fabricated using methyl ethyl ketone peroxide(MEKP) as the curing agent by hand lay-up process(HLUP) and compression molding technique(CMT). The fabrication parameters were optimized by Taguchi Do E(an orthogonal array of L25) using 3 control factors(concentration of TiO2, concentration of MEKP and curing temperature) having 5 levels each. Statistical tools were employed to identify significant factors affecting tensile strengths and its reproducibility during HLUP. It was found that the concentration of TiO2in HCs significantly influenced the tensile strength(TS) followed by MEKP concentration and curing temperature. The highest value of TS was obtained at 3 wt% TiO2, 2 wt% MEKP and 80 °C. Nevertheless, the sensitivity of TiO2concentration was basis for fabrication of polyester titania glass fiber hybrids(PTGFHs), which were further investigated for density and void fractions, linear shrinkage, flexural strength, impact strength, hardness and thermal behaviors. Moreover, cross-linking and hydrogen-bonding between polymeric chains, styrene, silica content of glass fiber and TiO2particles in PTGFHs were confirmed by Fourier transform infrared spectroscopy.

关键词： Hybrid composites Polyester Design of experiment Titania

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Synthesis,Characterization,Biological and Docking Simulations of 4-(Benzylideneamino) Benzoic Acids

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Chinese Journal of Structural Chemistry 2021年第3期40卷 291-300,271页

作者： HAMID Aziz AAMER Saeed FARUKH Jabeen ABDUL Basit IRFAN Zia Qureshi ABDUL Aziz atif Haroon ASHFAQ ur rehman Department of Chemistry Quaid-I-Azam University Islamabad 45320 Pakistan Computation ScienceResearch and Development Organization14012485 Hurontraio StreetMississaugaONCaL5A2G6 Department of Biology Laurentian University935 Ramsey Lake RoadSudburyONCanada P3E2C6 Department of Animal Sciences Quaid-I-Azam University Islamabad 45320 Pakistan Department of Microbiology Quaid-I-Azam University Islamabad 45320 Pakistan Department of Biochemistry Shankar CampusAbdul Wali Khan UniversityMardan 23200Khyber PukhtoonkhwaPakistan Department of Bioinformatics and Biostatistics Shanghai Jiaotong UniversityShanghai 200240China

The present research paper presents the synthesis, characterization, biological and computational studies of 4-(benzylideneamino) benzoic acid derivatives(3a~3g). Derivatives 3a~3c displayed best antidiabetic potential with a glucose-lowering effect compared to the reference drug Glibenclamide. Biochemical parameters including plasma glucose, serum triglycerides, cholesterol, alanine amino transferase and aspartate amino transferase levels showed significant alterations in concentrations relative to the control. Similarly, the derivatives 3a, 3d and 3e displayed potent in vitro antibacterial potential. Molecular docking simulations delineated that the ligands and complexes were stabilized at the active site by electrostatic and hydrophobic forces, consistent with the corresponding experimental results. In silico study of the binding pattern predicted that the synthesized ligands, 3d and 3a could serve as a potential surrogate for hit-to-lead generation and the design of novel antibacterial drugs.

关键词： antidiabetic biochemical cholesterol glibenclamide simulations

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山黧豆——脱脂乳混合冰淇淋的物理化学特性(英文)

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食品科学 2004年第4期25卷 83-86页

作者： Salim-ur-rehman Sarfraz Hussain atif Randhawa muhammad Saeed-ud-Din Salim-ur-rehman 不详 AssociateProtessor InsdtuteofFoodScienceandTechnologyUniversityofAgriculturePakistan.

山黧豆(Lathyrussativus种植山黧豆属)和乳混合物是由山黧豆粉与脱脂乳粉混合,按110加入水稀释而成。在四个配方组中,山黧豆粉与脱脂乳粉比例分别是T1=12.587.5,T2=2575,T3=37.562.5和T4=5050。每100g固体(山黧豆粉+脱脂乳粉)混合成100... 详细信息

山黧豆(Lathyrussativus种植山黧豆属)和乳混合物是由山黧豆粉与脱脂乳粉混合,按110加入水稀释而成。在四个配方组中,山黧豆粉与脱脂乳粉比例分别是T1=12.587.5,T2=2575,T3=37.562.5和T4=5050。每100g固体(山黧豆粉+脱脂乳粉)混合成1000ml混合物。混合物经均质、消毒,用作冰淇淋原料。在保存期间,当酸度增加时,膨胀率、蛋白质含量、乳糖含量和pH值会下降。在4个配方组中,感观品质最好的是T3组。

关键词：脱脂乳粉混合冰淇淋配方物理化学特性制备山黧豆粉

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A Novel Review on Security and Routing Protocols in MANET

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Communications and Network 2016年第4期8卷 205-218页

作者： muhammad Kashif Nazir Rameez U. rehman atif Nazir Department of Computer Science National Textile University Faisalabad Pakistan

The origin of Mobile ad hoc network (MANET) was started in 1970 as packet radio network (PRNET), later on different researches were made on it in different ages. MANET works under no fixed infrastructure in which every node works likes a router that stores and forwards packet to final destination. Due to its dynamic topology, MANET can be created anywhere, anytime. As there are limited resources in MANET so it faces many problems such as security, limited bandwidth, range and power constraints. Due to this, many new routing protocols are proposed. This article examines different techniques to manage congestion control, security issues, different layers attacks, routing protocols and challenges that are faced by MANET.

关键词： Mobile Ad Hoc Networks MANET Security Attacks Routing Protocols

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