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Role of circular economy,energy transition,environmental policy stringency,and supply chain pressure on CO_(2)emissions in emerging economies

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Geoscience Frontiers 2024年第3期15卷 209-220页

作者： Sunil Tiwari Kamel Si Mohammed Grzegorz Mentel Sebastian Majewski irum.shahzadi Department of Tourism Studies School of Business StudiesCentral University of KeralaIndia Faculty of Economics and Management Department of EconomicsUniversity of Ain TemouchentAlgeria Department of Quantitative Methods Faculty of ManagementRzeszow University of Technology35-959 RzeszowPoland Institute of Economics and Finance University of Szczecinul.A.Mickiewicza 6471-101 SzczecinPoland Department of Business Administration IQRA University Karachi-75300Pakistan Department of Production EngineeringSão Paulo State University(UNESP)BauruBrazil

This paper investigates the effect of the circular economy on CO_(2)emissions growth by considering the role of energy transition,climate policy stringency,industrialization,and supply chain pressure from 1997 to 2020 using panel quantile Autoregressive Distributed Lags(QARDL)and the panel *** employ cointegration association in the long run among the variables,and the results of the two models confirm *** reveal that circular economy and climate policy stringency significantly negatively impact carbon *** the other hand,the energy transition,industrialization,and supply chain pressures are crucial to determining CO_(2)emissions in the short and long *** finding further explores that municipal waste generation recycling is considerable at the mean and upper 90th quantiles than the lower ***,the empirical results of the current study provide acumens for policymakers of advanced economies and emerging markets to maintain the balance among circular economy,energy transition,environmental policy stringency,and supply chain pressure for reducing CO_(2)emissions without halting economic growth and sustainable ***,practical implications are reported through the lens of carbon neutrality and structural changes.

关键词： Circular economy Energy transition Supply chain Carbon emissions Panel QARDL

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Testing the LCC hypothesis by considering environmental sustainability and economic development:Role of green energy and resource management

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Geoscience Frontiers 2024年第3期15卷 419-430页

作者： Sunil Tiwari Syed Ali Raza Shiv Kumar Gupta irum.shahzadi Mahendra Babu Kuruva Department of Tourism Studies School of Business StudiesCentral University of KeralaIndia Department of Business Administration IQRA UniversityKarachi 75300Pakistan Centre for Mountain Tourism and Hospitality Studies HNB Garhwal Central UniversitySrinagarUttarakhand 246174India Department of Production Engineering São Paulo State University(UNESP)BauruBrazil Department of Business Administration IQRA University Karachi-75300Pakistan Department of Business Management HNB Garhwal Central UniversitySrinagar GarhwalUttarakhand 246174India

This study aims to demystify the role of green energy and green technology in establishing the nexus between behavioural intentions of tourists,technologies,and digital payments by using Perceived value(PV),Compatibility(CO),Perceived Enjoyment(PE),and Social Influence(SI)as a predictor variables,Trust(TR)and Satisfaction(SA)as a mediating variables and Behavioural Intentions(BI)as an outcome *** the empirical estimation,we employ smart PLS-SEM,TAM(Technology Acceptance Model)and SPSS and Tested the LCC *** findings suggest that green energy and perceived value have the highest positive impact on tourists’trust towards digital payments followed by compatibility,social influence and perceived ***,tourists’satisfaction and green technology is one of the important determinants of choosing any digital mode of payment,is mostly influence by perceived value,perceived enjoyment,compatibility and social ***,if we choose between trust and satisfaction,trust plays a significant role in exploring the behavioural intentions of tourists about green energy and green technology followed by tourists’*** addition,Tourists’trust and satisfaction are highly correlated and influence each *** study offers novel policy implications in terms of use of green technology and green energy in enhancing trust and satisfaction of tourists in order to deeper understanding of different dimensions of digital payments and M-wallets,and allowing them to explore the long-term value inherent of digital payments and M-wallets.

关键词： Digital payment Green technology Green energy Tourism LCC hypothesis

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Security Monitoring and Management for the Network Services in the Orchestration of SDN-NFV Environment Using Machine Learning Techniques

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Computer Systems Science & Engineering 2024年第2期48卷 363-394页

作者： Nasser Alshammari Shumaila shahzadi Saad Awadh Alanazi Shahid Naseem Muhammad Anwar Madallah Alruwaili Muhammad Rizwan Abid Omar Alruwaili Ahmed Alsayat Fahad Ahmad Department of Computer Science College of Computer and Information SciencesJouf UniversitySakakaAl Jouf72341Saudi Arabia Department of Computer Sciences Kinnaird College forWomenLahorePunjab54700Pakistan Department of Information Sciences Division of Sciences and TechnologyUniversity of EducationLahore54770Pakistan Department of Computer Engineering and Networks College of Computer and Information SciencesJouf UniversitySakaka72341Saudi Arabia Computer Science Florida Polytechnic UniversityLakelandFlorida33805USA Delta3T LahorePunjab54700Pakistan Department of Basic Sciences Common First YearJouf UniversitySakaka72341Saudi Arabia

Software Defined Network(SDN)and Network Function Virtualization(NFV)technology promote several benefits to network operators,including reduced maintenance costs,increased network operational performance,simplified network lifecycle,and policies *** vulnerabilities try to modify services provided by Network Function Virtualization MANagement and Orchestration(NFV MANO),and malicious attacks in different scenarios disrupt the NFV Orchestrator(NFVO)and Virtualized Infrastructure Manager(VIM)lifecycle management related to network services or individual Virtualized Network Function(VNF).This paper proposes an anomaly detection mechanism that monitors threats in NFV MANO and manages promptly and adaptively to implement and handle security functions in order to enhance the quality of experience for end *** anomaly detector investigates these identified risks and provides secure network *** enables virtual network security functions and identifies anomalies in Kubernetes(a cloud-based platform).For training and testing purpose of the proposed approach,an intrusion-containing dataset is used that hold multiple malicious activities like a Smurf,Neptune,Teardrop,Pod,Land,IPsweep,etc.,categorized as Probing(Prob),Denial of Service(DoS),User to Root(U2R),and Remote to User(R2L)*** anomaly detector is anticipated with the capabilities of a Machine Learning(ML)technique,making use of supervised learning techniques like Logistic Regression(LR),Support Vector Machine(SVM),Random Forest(RF),Naïve Bayes(NB),and Extreme Gradient Boosting(XGBoost).The proposed framework has been evaluated by deploying the identified ML algorithm on a Jupyter notebook in Kubeflow to simulate Kubernetes for validation *** classifier has shown better outcomes(99.90%accuracy)than other classifiers in detecting anomalies/intrusions in the containerized environment.

关键词： Software defined network network function virtualization network function virtualization management and orchestration virtual infrastructure manager virtual network function Kubernetes Kubectl artificial intelligence machine learning

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Structural optimization of filament wound composite pipes

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Frontiers of Structural and Civil Engineering 2022年第8期16卷 1056-1069页

作者： Roham RAFIEE Reza shahzadi Hossein SPERESP Faculty of New Science and Technologies University of TehranTehran ***Iran

An optimization procedure is developed for obtaining optimal structural design of filament wound composite pipes with minimum cost utilized in pressurized water and waste-water ***,the short-term and long-term design constraints dictated by international standards are ***,proper computational tools are developed for predicting the structural properties of the composite pipes based on the design architecture of *** developed computational tools are validated by relying on experimental ***,an integrated design-optimization process is developed to minimize the price as the main objective,taking into account design requirements and manufacturing limitations as the constraints and treating lay-up sequence,fiber volume fraction,winding angle,and the number of total layers as design *** developed method is implemented in various case studies,and the results are presented and discussed.

关键词： composite pipes optimization experimental validation computational modeling filament winding

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Role of Inclined Magnetic Field and Copper Nanoparticles on Peristaltic Flow of Nanofluid through Inclined Annulus: Application of the Clot Model

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Communications in Theoretical Physics 2017年第6期67卷 704-716页

作者： Iqra shahzadi S.Nadeem Department of Mathematics Quaid-i-Azam University

A genuine neurotic condition is experienced when some blood constituents accumulate on the wall of the artery get withdrew from the wall, again join the circulatory system and coagulation occur. Role of copper nanoparticles and inclined magnetic field on the peristaltic flow of a nanofluid in an annular region of inclined annulus is *** represent the clot model by considering the small artery as an annulus whose outer tube has a wave of sinusoidal nature and inner tube has a clot on its walls. Lubrication approach is used to simplify the problem. Close form solutions are determined for temperature and velocity profile. Impact of related parameters on pressure rise, pressure gradient,velocity and streamlines are interpreted graphically. Comparison among the pure blood and copper blood is presented and analyzed. One main finding of the considered analysis is that the inclusion of copper nanoparticles enlarges the amplitude of the velocity. Therefore, the considered study plays a dominant role in biomedical applications.

关键词： inclined magnetic field copper nanoparticles inclined annulus clot model exact solution

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Mathematical Analysis for Peristaltic Flow of Two Phase Nanofluid in a Curved Channel

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Communications in Theoretical Physics 2015年第11期64卷 547-554页

作者： S.Nadeem Iqra shahzadi Department of Mathematics Quaid-i-Azam University

This paper describes the theoretical analysis for peristaltic motion of water base nanoBuid containing distinct types of the nanoparticles like Cu,TiO_2,and Al_2O_*** of nano Quid are modelled and simplified by constructing the suppositions of low Reynolds number as well as long wave *** reduced equations are solved *** are represented through *** for the velocity,temperature,pressure rise and stream lines are analyzed *** work presented here is based on the fictitious values,however some other values can be tested experimentally.

关键词： peristaltic flow nanofluid curved channel exact so

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Exciton-polariton in WS_2 microcavity in the presence of the optical Stark effect

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Chinese Optics Letters 2019年第2期17卷 70-73页

作者： Mahnoor shahzadi Weili Zhang M.T.Khan School of Information and Communication Engineering University of Electronic Science and Technology of China Electrical Engineering Department University of Lahore

Exciton-polaritons offer an exceptional platform for future photoelectronic and quantum information applications. The influence of the optical Stark effect on exciton-polaritons in a microcavity embodied with a monolayer WS2 is studied. A polarization dependent model is proposed to study the change of strongly coupled excitons and photons in a WS2 microcavity. It is revealed through both steady and dynamical states analysis that an outside optical Stark pulse can effectively vary the polariton characteristics, such as dispersion, exciton, and photon fractions, through blue shifting of excitonic resonance. Thus, the analysis and control of exciton-polaritons in a WS2 microcavity via a spin-selective trigger could be achievable.

关键词： Exciton-polariton WS2 microcavity

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Improved Performance for a Heterogeneous Satellite-Cooperative Network with Best Relay Node Selection

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China Communications 2019年第5期16卷 93-105页

作者： Pedram hajipour Ali shahzadi Saeed Ghazi-Maghrebi Department of Communication College of Electrical EngineeringYadegar-e-Imam Khomeini (RAH) Shahr-e-rey BranchIslamic Azad UniversityTehranIran. Department of Electrical and Computer Engineering Semnan UniversitySemnanIran. Department of Communication College of Electrical EngineeringYadegar-e-Imam Khomeini (RAH) Shahr-e-rey BranchIslamic Azad UniversityTehranIran

Nowadays, hybrid satellite-terrestrial cooperative network has emerged as a key technology to provide a great variety of communication services. The deployment of this network will improve coverage and capacity in remote areas. Despite the benefits of this network, by increasing the number of users, communication efficiency based on interference management is a major challenge in satellite-based system. Also, the direct links between satellite system and the terrestrial equipment do not always have desirable channel condition. In order to avoid serious throughput degradation, choosing a cooperative relay node is very important. In this paper, Stackelberg game is exploited for interference management that is raised by satellites in down link over terrestrial equipment. Then, for interference management between ground station and relay node with other mobile users, CVX is used to allocate optimum power. Also, the best relay node in this structure is selected based on the harmonic mean function. Thus, the performance of the heterogeneous satellite-cooperative network is investigated based on three benchmarks, namely, successful transmission, energy consumption and outage probability. Finally, the simulation results showed the effect of proposed system model on the performance of next generation satellite networks.

关键词： heterogeneous Stackelberg game convex optimization relay node cooperative communication

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Uniform and Homogeneous Growth of Copper Nanoparticles on Electrophoretically Deposited Carbon Nanotubes Electrode for Nonenzymatic Glucose Sensor

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Acta Metallurgica Sinica(English Letters) 2016年第10期29卷 889-894页

作者： Syeda Ammara shahzadi Shamaila Rehana Sharif Sheeba Ghani Nosheen Zafar Department of Physics University of Engineering and Technology Department of Physics Forman Christian College (A Chartered University)

The multiwalled carbon nanotubes thin-film-based electrode was fabricated by electrophoretic deposition and modified with copper （Cu） nanoparticles to fabricate Cu/CNTs nanocomposite sensor for nonenzymatic glucose detection. The expensive glassy carbon electrode was replaced by fluorine-doped tin oxide glass containing CNTs film to confine the Cu nanoparticles growth by electrodeposition through cyclic voltammetry （CV）. The ultraviolet visible and X-ray diffraction analysis revealed the successful deposition of Cu nanoparticles on the CNTs-modified electrode. The atomic force microscopy images confirrqed the morphology of electrodeposited Cu on CNTs film as uniformly dispersed particles. The electrocatalytic activity of electrode to the glucose oxidation was investigated in alkaline medium by CV and amperometric measurements. The fabricated sensor exhibited a fast response time of less than 5 s and the sensitivity of 314 μA rnM^-1 cm^-2 with linear concentration range （0.02-3.0 mM） having detection limit 10.0 μM. Due to simple preparation of sensor, Cu/CNTs nanocomposite electrodes are a suitable candidate for reliable determination of glucose with good stability.

关键词： Electrophoretic deposition (EPD) Fluorine-doped tin oxide (FTO) substrate Carbon nanotubes Copper nanoparticles Nonenzymatic electrocatalysis Glucose sensor

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A Clot Model Examination: with Impulsion of Nanoparticles under Influence of Variable Viscosity and Slip Effects

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Communications in Theoretical Physics 2017年第11期67卷 667-677页

作者： S.Ijaz Iqra shahzadi S.Nadeem Anber Saleem Department of Mathematics Faculty of Sciences HITEC University Department of Mathematics Quaid-i-Azam University Islamabad Medical and Dental College

In this speculative analysis, our main focused is to address the neurotic condition that occurs due to accumulation of blood components on the wall of the artery that results in blood coagulation. Specifically, to perceive this phenomena clot model is considered. To discuss this analysis mathematical model is formed in the presence of the effective thermal conductivity and variable viscosity of base fluid. Appropriate slip conditions are employed to obtain the close form solutions of temperature and velocity profile. The graphical illustrations have been presented for the assessment of pressure rise, pressure gradient and velocity profile. The effects of several parameters on the flow quantities for theoretical observation are investigated. At the end, the results confirmed that the impulsion of copper and silver nanoparticles as drug agent enlarges the amplitude of the velocity and hence nanoparticles play an important role in engineering and biomedical applications such as drug delivery system.

关键词： variable viscosity metallic nanoparticles slip effects clot model exact solution

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