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Spanning Simplicial Complexes of Uni-Cyclic Graphs

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Algebra Colloquium 2015年第4期22卷 707-710页

作者： Imran Anwar zahid raza Agha Kashif COMSATS Institute of Information Technology Lahore Pakistan National University of Computer and Emerging Sciences Lahore Campus Pakistan National University of Computer and Emerging Sciences Lahore Campus Pakistan Department of Mathematics University of Management and Technology

In this paper, we introduce the concept of the spanning simplicial complex As（G） associated to a simple finite connected graph G. We characterize all spanning trees of the uni-cyclic graph Un,m. In particular, we give a formula for computing the Hilbert series and h-vector of the Stanley-Reisner ring k[△s（Un,m）]. Finally, we prove that the spanning simplicial complex △s（Un,m） is shifted and hence is shellable.

关键词： primary decomposition Hilbert series f-vector h-vector spanning tree

Edge Metric Dimension of Honeycomb and Hexagonal Networks for IoT

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Computers, Materials & Continua 2022年第5期71卷 2683-2695页

作者： Sohail Abbas zahid raza Nida Siddiqui Faheem Khan Taegkeun Whangbo Department of Computer Science College of Computing and InformaticsUniversity of SharjahSharjah27272UAE Department of Mathematics College of SciencesUniversity of SharjahSharjah27272UAE Artificial Intelligence Lab Department of Computer EngineeringGachon UniversitySeongnam13557Korea

Wireless Sensor Network(WSN)is considered to be one of the fundamental technologies employed in the Internet of things(IoT);hence,enabling diverse applications for carrying out real-time *** navigation in such networks was the main motivation for the introduction of the concept of landmarks.A robot can identify its own location by sending signals to obtain the distances between itself and the *** networks to be a type of graph,this concept was redefined as metric dimension of a graph which is the minimum number of nodes needed to identify all the nodes of the *** idea was extended to the concept of edge metric dimension of a graph G,which is the minimum number of nodes needed in a graph to uniquely identify each edge of the *** plane networks can be easily constructed by repeating regular *** design is of extreme importance as it yields high overall performance;hence,it can be used in various networking and IoT *** honeycomb and the hexagonal networks are two such popular mesh-derived parallel *** this paper,it is proved that the minimum landmarks required for the honeycomb network HC(n),and the hexagonal network HX(n)are 3 and 6 *** bounds for the landmarks required for the hex-derived network HDN1(n)are also proposed.

关键词： Edge metric dimension internet of things wireless sensor network honeycomb network hexagonal network hex-derived networks

Cure Characteristics, Mechanical and Swelling Properties of Marble Sludge Filled EPDM Modified Chloroprene Rubber Blends

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Advances in Materials Physics and Chemistry 2012年第2期2卷 90-97页

作者： Khalil Ahmed Shaikh Sirajuddin Nizami Nudrat zahid raza Khaula Shirin Applied Chemistry Research Centre Pakistan Council of Scientific and Industrial Research Laboratories Complex Karachi Pakistan Department of Chemistry University of Karachi Karachi Pakistan

In the present study, attempts have been made to modify Marble Sludge (MS) filled Ethylene-propylene-diene monomer (EPDM) with Chloroprene rubber (CR). Compounding was carried out on a two-roll mill and vulcanized at 155℃. The modified blend of MS filed EPDM/CR was characterized on the basis of the effect of blend ratio on cure characteristics, mechanical and swelling properties of blends were investigated. The effect of thermal aging on mechanical and swelling behavior in aromatic, aliphatic and chlorinated solvents of cured MS filled EPDM/CR blend was also examined. The minimum torque and maximum torque of the blend first increased and then slightly decreased after the increasing of CR content in MS filled EPDM/CR blends. Scorch time, cure time, cure rate index, tensile strength, tear strength, hardness increased with increasing CR content in the MS filled EPDM compound, but elongation at break, resilience, abrasion loss, mole % uptake, swelling index and percentage of soluble fraction decreased, resilience, abrasion loss, mole % uptake, swelling index and percentage of soluble fraction decreases. Accelerated aging performance of cured composites also influenced by increasing CR content in MS filled EPDM compound.

关键词： Marble Sludge Cure Characteristics Mechanical Properties Swelling Parameters Aging

STARLIKENESS ASSOCIATED WITH THE SINE HYPERBOLIC FUNCTION

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Acta Mathematica Scientia 2024年第4期44卷 1244-1270页

作者： Mohsan raza Hadiqa zahid Jinlin LIU Department of Mathematics Government College University FaisalabadFaisalabad 38000Pakistan Department of Information Science Yangzhou UniversityYangzhou 225002China

Let q_(λ)(z)=1+λsinh(ζ),0<λ<1/sinh(1)be a non-vanishing analytic function in the open unit *** introduce a subclass S^(*)(q_(λ))of starlike functions which contains the functions f such that zf'/f is subordinated by q_(λ).We establish inclusion and radii results for the class S^(*)(q_(λ))for several known classes of starlike ***,we obtain sharp coefficient bounds and sharp Hankel determinants of order two for the class S^(*)(q_(λ)).We also find a sharp bound for the third Hankel determinant for the caseλ=1/2.

关键词： starlike functions sine hyperbolic functions radii problems coefficient bounds Hankel determinants

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二十一世纪国家艺术博物馆

建筑创作 2016年第6期 170-183页

作者： Zaha Hadid Patrik Schumacher Anja Simons Paolo Matteuzzi Fabio Ceci Mario Mattia Maurizio Meossi Paolo Zilli Luca Peralta Maria Velceva Matteo Grimal Ana M.Cajiao Barbara Pfenningstorff Dillon Lin Kenneth Bostock raza zahid Lars Teichmann Adriano De Gioannis Amin Taha Caroline Voet Gianluca Ruggeri Luca Segarelli

建筑设计概念以及城市策略：可能性领域的划分通过维持与原军队营房的索引关系,博物馆的设计提出了建筑与其所在城市文脉的问题。这绝不是对地貌混合拼凑的尝试,而是为了应对平衡场地周边的强势街区脉络,所提出的对弱城市肌理的延续。

关键词：艺术博物馆城市肌理建筑设计二十一世纪城市文脉 texture correlative directional looking Floor

Structural and optical properties of Zn1-xNixTe thin films prepared by electron beam evaporation technique

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Progress in Natural Science:Materials International 2015年第1期25卷 22-28页

作者： Arshad Mahmood R. Rashid U. Aziz A. Shah zahid Ali Qaiser raza Tanveer Ashraf Nano Devices Laboratories National Institute of Lasers and Optronics (NILOP) P.O. Nilore Islamabad Pakistan

Zn1-xNixTe thin films with different composition(x=0.0, 0.05, 0.10, 0.15 and 0.20) were deposited on glass substrate by electron beam evaporation technique followed by its characterization using advanced structural and optical analysis techniques. Structural properties of the prepared thin films were studied by X-ray diffraction(XRD). The XRD patterns revealed that the binary compounds transformed into a ternary compound with cubic structure having preferred orientation along the c-direction with(111) planes. Composition analysis of the films was determined by energy dispersive analysis of X-rays(EDAX) and found to be in agreement with the precursor composition. Optical properties such as extinction coefficient(k) and band gap energy of these films were examined by using a spectroscopic ellipsometer. It was found that the extinction coefficient(k) increased with the addition of Ni content in the alloy. In comparison, the band gap energy was also determined by using transmission spectra and found to be agreed with that of the ellipsometric results. These analyses confirm that the band gap energy decreases with the increase of Ni content in the alloy.

关键词： E-beam evaporation Solar cells,Zn1-xNixTe Ellipsometry Extinction coefficient Band gap energy

Deep Convolutional Neural Networks for Accurate Classification of Gastrointestinal Tract Syndromes

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Computers, Materials & Continua 2024年第1期78卷 1207-1225页

作者： zahid Farooq Khan Muhammad Ramzan Mudassar raza Muhammad Attique Khan Khalid Iqbal Taerang Kim Jae-Hyuk Cha Department of Computer Science COMSATS University IslamabadWah CampusWah47040Pakistan Department of Computer Science and Mathematics Lebanese American UniversityBeirut13-5053Lebanon Department of Computer Science HITEC UniversityTaxila47080Pakistan Department of Computer Science COMSATS University IslamabadAttock CampusAttock43600Pakistan Department of Computer Science Hanyang UniversitySeoul04763Korea

Accurate detection and classification of artifacts within the gastrointestinal(GI)tract frames remain a significant challenge in medical image *** science combined with artificial intelligence is advancing to automate the diagnosis and treatment of numerous *** to this is the development of robust algorithms for image classification and detection,crucial in designing sophisticated systems for diagnosis and *** study makes a small contribution to endoscopic image *** proposed approach involves multiple operations,including extracting deep features from endoscopy images using pre-trained neural networks such as Darknet-53 and ***,feature optimization utilizes the binary dragonfly algorithm(BDA),with the fusion of the obtained feature *** fused feature set is input into the ensemble subspace k nearest neighbors(ESKNN)*** Kvasir-V2 benchmark dataset,and the COMSATS University Islamabad(CUI)Wah private dataset,featuring three classes of endoscopic stomach images were *** assessments considered various feature selection techniques,including genetic algorithm(GA),particle swarm optimization(PSO),salp swarm algorithm(SSA),sine cosine algorithm(SCA),and grey wolf optimizer(GWO).The proposed model excels,achieving an overall classification accuracy of 98.25% on the Kvasir-V2 benchmark and 99.90% on the CUI Wah private *** approach holds promise for developing an automated computer-aided system for classifying GI tract syndromes through endoscopy images.

关键词： Feature fusion Darknet-53 Xception binary dragonfly algorithm ensemble

Photoluminescence and structural analysis of wurtzite(ZnO)1-x(V2O5)x composite

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Journal of Semiconductors 2018年第8期39卷 6-9页

作者： Amjid Iqbal Arshad Mahmood Q. raza A. Shah Rashad Rashid zahid Ali A. Malik U. Aziz National Institute of Laser and Optronics (NILOP) P.O. Nilore-45650 Islamabad Pakistan

This paper demonstrates the structural, vibrational and photoluminescence characteristics of(ZnO)(VO)(x = 0, 3, 6 and 9 mol%) composites semiconductor synthesized by using the solid state reaction method. X-ray diffraction(XRD) studies show that(ZnO)(VO)composites have the poly crystalline wurtzite structure of hexagonal Zn O. It is found from the XRD results that the lattice constants and the crystallite size increase while the dislocation density decreases with increase in doping concentration. The existence of E1(TO) and E2(high) Raman modes show that the Zn O still preserve wurtzite structure after doping vanadium oxide, which is in agreement with XRD results. Room temperature photoluminescence(PL) exhibit near band edge and broad deep level emission while indicating the suppression of deep level emission with the incorporation of VOup to a certain concentration(x < 9). Moreover, the optical band gap increase with doping, which is accompanied by the blue shift of the NBE emission.

关键词： Raman modes dislocation density band edge emission (ZnO)_(1-x)(V_2O_5)_x luminescence

Association between Asthma and Dental Caries amongst 12 - 15 Years Old Children: A School-Based Cross-Sectional Study in Karachi, Pakistan

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Open Journal of Epidemiology 2019年第1期9卷 104-117页

作者： Wajeeha zahid Shafquat Rozi Farhan raza Khan Nida zahid Masood Kadir Department of Community Health Sciences Aga Khan University Karachi Pakistan Department of Surgery Dentistry Section Aga Khan University Karachi Pakistan Department of Surgery Aga Khan University Karachi Pakistan

Objective: The study aimed to determine an association between dental caries and asthma among 12 to 15 years old children. Methods: This is a school-based cross-sectional study conducted from January to February 2016. A random sample of 544 children aged 12 - 15 years were enrolled from five private schools of Karachi. Dental caries was assessed using DMFT Index (Decayed, Missing, Filled teeth). The main exposure variable was asthma and information on it was collected through the International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire. Results: The data was analyzed using Cox Proportional Hazard algorithm. Crude and adjusted prevalence ratios with 95% CI were reported. Total 554 children, 306 (56.3%) boys and 43.7% girls participated in the study. Mean age of children was 13.2 ± 0.05 years. Total number of children with DMFT > 0 was 30.5%. The decayed component contributed largely (22.8%) to the DMFT score. Overall prevalence of asthma was 20%. Prevalence of caries in asthmatic children was 28.4% as compared to 31% among non-asthmatic children. Adjusted prevalence ratio of dental caries in asthmatic children was 0.8 (95% CI 0.6 - 1.3) after adjusting for carious food intake, age, oral hygiene index and dentist visit;the association between asthma and dental caries turned out to be in-significant. Conclusions: There was no association observed between asthma and dental caries among the children examined in this study.

关键词： Dental Caries Asthma Children