The future demands for Smart Meters (SM) applications impose maximizing resources utilization. In this paper, we achieve two main objectives to comply with fifth-generation networks goals and serving the SM applications. First one is to enhance the Narrowband-Internet-of-Things spectral efficiency. The second is to alleviate the signalling burden during each transmission request for SMs. First, we

A significant phenomenon associated with devices used in nano/microelectromechanical systems (N/MEMS) is the dynamic pull-in instability. The basic theme of this manuscript is to study the nonlinear oscillation and dynamic pull-in instability in an N/MEMS switch with a current carrying conductor due to magnetic force. The variational iteration method accompanied by the techniques of the Laplace transform

The effects of ordered surface feature in the form of converging-diverging riblets are investigated experimentally on an airfoil. Riblet sheets are applied onto the surface of NACA 0026 airfoil at a yaw angle of α=0°,±10°, Riblet height of h = 1 mm, and riblet spacing of s = 2 mm. The length of the riblets strip is approximately 7.5% in chord percentage. At a low friction Reynolds number of Reτ ≈ 200

Over time, urban dwellers have become increasingly concerned with the thermal characteristics in their neighbourhood. Modern Asian cities with their environmental diversity have introduced complexity to urban heat island (UHI) predictions. This research aimed to discover the relative contribution of different environmental and anthropogenic parameters to the UHI intensity in Kuala Lumpur, Malaysia

Local fractional q-homotopy analysis transform method (q -HATM) is employed to solve the local fractional Helmholtz equation. Uniqueness and convergence analysis of the method is investigated by Banach’s fixed point theory. Solutions are expressed in the form of rapidly series with fast computable basics by Mathematica software. Reliability analysis is provided. Computational results display that LFq-HATM

The paper seeks to present an innovative Bio-mimicking approach that utilizes Cyber-Physical Systems technology as a construction system based on a Knowledge-Based System that can ease the integration of this technology to the built environment. The paper starts by reviewing the relation between biological and architectural systems. Then it moves to bio-mimicking as a sustainability achieving approach

Raising rotational speed is an effective way to improve power density of axial piston pumps, but high rotational speed tends to cause undesirable cavitation in the pump. Although some machine learning methods have been successfully applied to detect the cavitation with high accuracy, these conventional methods suffer from the drawback of time-consuming and experience-dependent manual feature extraction

The paper introduces a novel 3-D chaotic fractional system. A thorough analytical study of the new system is done using Lyapunov spectrum, bifurcation analysis, equilibrium point analysis, existence & uniqueness of solution, etc. The system is synchronized using a novel technique ’Quad-compound combination anti-synchronization’ with its parallel systems using non linear and adaptive sliding mode control

Yarn quality is an important factor that influences the subsequent products quality. Employing artificial intelligence technologies can lead to more objective yarn testing systems and higher product specifications that meet the demands of the manufacturing and end-user. This work was carried out in order to employ image processing and artificial neural networks for modeling yarn tenacity and elongation%

In this paper, on the basis of the reproducing kernel functions, a novel meshless algorithm is explored for fractional advection–diffusion-reaction equations (ADREs) with Caputo time variable order. Firstly, the Gaussian kernel function and the Mittag–Leffler kernel function are introduced and combined to construct a new binary reproducing kernel function. Secondly, base on the constructed reproducing

This paper is about the implementation of the pseudo-spectral method based on the Lagrange polynomials to the numerical study of the multi-term time-fractional differential equations. Also, a semi-discrete approximation scheme used to the conversion of this equation to a system of ordinary fractional differential equations. To maintain the high accuracy of the spectral method, we applied the Mittag-Leffler

This study aims to model a plant for synthesis dimethyl ether via methanol using syngas derived from biomass gasification. Two steps prior to dimethyl ether synthesis gas composition adjustment and purification to remove the acid components were explicitly analysed. Process simulation of the technological installation was implemented in the CHEMCAD software. The technological aspects of the installation

A new method of predicting fouling is proposed. The method involves the use of membrane autopsy and fractal analysis of the cake layer that was formed on the top of fouled membranes after the filtration experiment. The new method was verified using three different commercially available membranes made from the same material. The membrane autopsy was done on both virgin and fouled membranes using FT-IR

In this paper, a generalized (3 + 1)-dimensional nonlinear evolution equation (NLEE) is proposed and examined. This investigated NLEE is undoubtedly a robust mathematical model in real-world applications. Because several essential and commonly used relative differential equations can be obtained by considering some specific choices in the given general form. In this way, many new solitary wave solutions

With the deepening of underground resource exploitation, the application of cemented backfill pipeline transportation of mineral tailings has become the best option to reduce the risk of deep ground pressure and solid waste pollution. Research in this field is mainly centred on slurry fluidity experiments. However, the slurry transportation parameters, particle characteristics and complexity of the

Transportation of heat and mass along with irreversibility analysis for the flow of Couple stress fluid past over a nonlinear stretched surface is reported in this exploration. The novel features and purpose of this report is to notice the involvement of variable thermophysical characteristics i.e. (variable magnetic field, thermal conductivity, diffusion coefficient) for the couple stress model. Flow

Owing to the magnified thermal performances of nanoparticles and essential applications in various industrial and engineering processes like heat exchangers, cooling systems, boilers, MEMS, chemical engineering, laser diode arrays and cool automobile engines, variety of research is presented in this topic. On this end, current investigation deals with the unsteady flow of Williamson nanofluid containing

Unsteady magneto-hydrodynamic double-diffusive convection flows between two infinite vertical parallel plates have been investigated in the presence of the inclined magnetic field, heat generation or absorption, and chemical reaction. The dimensionless form of governing equations for momentum, energy and concentration has been solved using the integral transforms (Laplace and finite sine-Fourier transforms)

In this work, cellulose nanocrystals (CNC) derived from sawdust were successfully incorporated into a thin film composite membrane made from polyamide. The characteristics of unmodified and modified membranes were investigated using FT-IR, XRD, TGA, SEM, EDX, AFM and contact angle measurement. The membranes’ performances were evaluated using a dead-end test cell with sodium chloride (1500 ppm) and

In this paper, we study the solution of fractal energy integral equation for one-dimensional compressible flows without body force using measure of noncompactness. We also discuss the solution of the local fractal equation of losing energy system using the notion of local fractal differential idea. For this, a new notion of χ-Δ-set contraction condition under simulation function is defined and two

In order to research the fluid-induced force of centrifugal pump impeller with compound whirling, based on the N-S equations, the RNG k-ε turbulence model is applied to simulate the low specific speed centrifugal pump under eccentric assembly condition. The effects of different flow rates, impeller eccentricities and whirl ratios on the fluid-induced force of impeller were investigated. Finally, the

The characteristics of Stefan blowing effects in a magneto-hydrodynamic flow of a Casson fluid past a stretching sheet are investigated. The effects of radiation, heat source/sink, Newtonian heating, Arrhenius activation energy and binary chemical reaction are considered for heat and mass transfer analysis. The homotopy analysis method (HAM) was utilised to solve the transformed non-dimensionalized

Sultan-Barquq complex is considered to be the most compact and unified Islamic Mamluk monuments in Cairo. In addition to its main function as a place of prayer, its design allows separate schools for teaching the four Sunni rites. Both functions are concerned with the importance of acoustical perception and intelligibility of speech, as the most important characteristic of the archaeoacoustics identity

In this article, optimal control for variable order fractional multi-delay mathematical model for the co-infection of HIV/AIDS and malaria is presented. This model consists of twelve differential equations, where the variable order derivative are in the sense of Caputo. Three control variables are presented in this model to minimize the number of the co-infected individuals showing no symptoms of AIDS

The aim of this study is to investigate the removal of cadmium from sulphate solutions via a batch cell by an electrochemical method. A cadmium/zinc couple was used to generate a spontaneous chemical reaction in the cell. Different parameters such as initial Cd(II) concentration, choice of electrode, and influence of pH were investigated in this work. After 2 h operation of the reactor with a three-dimensional

The higher bit rates, lower noise figure, decreasing the nonlinear penalty of fiber system, longer amplifier length, tight channel spacing and operating near the zero-dispersion wavelength are achieved by using Distributed Raman amplifiers (DRAs). In this paper, a new model of noise figure (NF) due to amplified spontaneous emission (ASE) is introduced for the DRA at different pump schemes: co-pumping

Wind energy is one of the most promising renewable energy resources in terms of cost, environmentally friendly, and sustainability. Accordingly, exploiting its full potential has extensively attracted researchers to cope with the depletion of traditional energy resources. In this paper, enhancements in the design of a vertical axis wind turbine have been suggested, which entail employing self-oriented

In this paper, we proposed and investigated a discretized form of a fractional-order multi-drug antimicrobial resistance model. The existence and the uniqueness of the proposed model is studied. The impacts of varying the parameters of the system are examined. Under certain conditions, the system undergoes some kinds of bifurcations. It is established that the fractional-order parameter affects the

Given the complexity of the wind environment around bridge–tunnel sections in canyons, flow fields are complex and changeable, resulting in transient aerodynamic loads on vehicles. Consequently, vehicles tend to sideslip or drift off lanes, affecting handling stability. An aerodynamic model coupled with a two-degrees-of-freedom dynamic model is proposed to reveal the aerodynamic performance and dynamic

This work presents a numerical and experimental investigation of sawdust gasification in a fluidized bed using air. The fluidized bed reactor was tested in the Faculty of Engineering, Mansoura University, Egypt. In the experimental part, the experiments were made in a fluidized bed gasifier to optimize the gasifying of sawdust pellets using air. The syngas composed mainly of CO, H2, CH4, and CO2 as

This research article elaborates the salient attributes of sundry variables i.e., Darcy-Forchheimer number, mixed convection parameter, porosity parameter, Weissenberg number, slip parameter, Prandtl number, activation energy parameter and chemical reaction parameter on the forced convective Darcy-forchheimer flow of non-Newtonian fluid (Carreau-Yasuda fluid) subject to stretchable and flat surface

We construct the two unique piecewise C3-splines of degree six and eight to approximate the solution of fractional integro-differential equations. Existence and uniqueness of the solution of second order fractional integro-differential equation has been proved. Convergence analysis of the presented methods have been discussed. Illustrative examples are included to demonstrate the validity and applicability

The emerging of new models in machine learning enhances the performance of algorithms proposed to address several challenging tasks such as object recognition, classification and identification purpose. Nowadays. the deep learning algorithms are playing a massive role in accurately addressing complex problems due to their capability of learning various complex features from data. One limitation of

In this paper, the operational matrix with Legendre polynomials method will be implemented to get the approximate solution for the nonlinear thin film flow (NTFF) of third grade problem. This method provides an approximate solution by converting the nonlinear differential equation into nonlinear algebraic equations system which can be solved by using Mathematica® 10. To illustrate the accuracy and

Calibration of a triangular weir discharge under unsteady flow condition using a quasi-steady state analysis is presented in this study. The weir was initially subjected to high flow supply corresponding high water head above the weir crest. The stop of this flow induced continuous drop in the water height with time. Measuring the initial and final water heights and the time elapsed for this height

Thermal and mechanical relaxation times play essential roles in the thermal quality factor Q-factorof the micro-resonators, where controls the energy damping through the coupling of thermal and mechanical behavior. In this work, we developed an analytical mathematical model that assumed a pre-stress in a two-temperature micro-viscothermoelastic resonator of silicon to modify the thermal and mechanical

Faced with limited land resources, large and medium-sized cities are compelled to make use of land in an efficient and intensive way. At the same time, the available traffic resources in many cities cannot meet the soaring trip demands. From the perspective of bicycle travel, this paper explores the characteristics of land use and bicycle travel in different types of urban blocks in Xi’an, based on

With the rapid development of general hardware technology, microcomputers with multi-core CPUs have been widely applied in commercial services and household usage in the last ten years. Multi-core chips could, theoretically, lead to much better performance and computational efficiency than single-core chips. But so far, they have not shown general advantages for users, other than for operating systems

In this paper, it has been proposed a viable optimal solution for achieving multi-objective optimization in powder mixed electrical discharge machining (PMEDM) process parameters, using titanium powder. Taguchi–AHP–Deng’s method is used to solve the multi-criteria decision making (MCDM) problem for this technology. The process parameters selected are workpiece material, electrode material, electrode

Many Instrumentation and Control (I&C) systems of Research reactors experience aging difficulties that necessitate optimizing operations and safety systems. Therefore, great attention paid to FPGA-based I&C use particularly in safety systems; this is due to the FPGAs' notable simplicity and advantages. This work aims to develop a prototype FPGA-Based Nuclear Instrumentation Module to use it as part

Despite its simplicity and high accuracy, the real-time efficiency of OTSU segmentation is not high. In order to promote the real-timeliness of image segmentation, this paper introduces the fruitfly optimization algorithm (FOA) to OTSU segmentation, creating an FOA-OTSU segmentation algorithm. In the proposed algorithm, the optimal threshold for segmentation is searched for by the FOA. The classic

This work proposes a new suspension system for vehicles through replacing passive ordinary suspension with a new low-cost semi-active suspension. The new proposed system consists of a hydraulic piston with proportional throttle valve mounted outside the piston’s cylinder between the two inlet ports. The throttle valve will be used to dissipate the hydraulic energy in the cylinder’s oil. The throttle

Present study signifies the thermal analysis of the electroosmotic flow of Williamson fluid in the presence of peristaltic propulsion and asymmetric zeta potential at the walls. The present study addresses this thermal configuration for the very first time. The state of art of study is to explore the heat transport in electroosmotic biological flows with applications like smart sensors, food diagnostics

In this work, two varying types of composites with a fixed weight percentage of plain woven glass fiber and epoxy reinforced with four different types of filler materials such as one with CaCO3-Al2O3-MgO-TiO2 and another with CaCO3-Al2O3-MgO-CuO at different weight ratios (5, 10 and 15 gm) are studied. The composite specimens required for different tests are fabricated in conventional wet hand lay-up

Nowadays, due to the energy and environmental crisis, using renewable energy is considered to reduce environmental pollution. In this paper, a comprehensive review of geothermal source heat pumps (GSHPs) and air source heat pumps (ASHPs) are studied from various aspects including refrigerant change, single-stage heat pump and heat pump with an economizer. This study is conducted to meet the heating

Fouling in blood flow is very common and may decrease the blood flow in human body and lead to critical health issues. Upon injury in a blood vessel, the body’s defensive system triggers a process to create a blood clot called “Thrombus”, which prevents bleeding. Blood clots are formed by a combination of blood cells, platelets, and fibrins. In this study, we investigate a controlled drug delivery

Advanced developments of design and structure industries require modern material which both complies with green environment issues to reduce non-renewable resources, and also has the prospect to be fundamental material. The aim of the research was to investigate the interaction between alkali treated of Salacca Zalacca Fiber (SZF) and High Density Polyethylene (HDPE) by using microscopic examination

Shallow Tunneling Method has been widely applied in the construction of pipe gallery. However, due to the complexity of strata and the particularity of environment, improper construction may cause uneven settlement of urban road, even pavement collapse. In the paper, in reliance on Beijing Xi’anmen Street Heat Supply Pipeline Works and by virtue of drilling and survey, the engineering geological conditions

A key measure of poverty alleviation is to enhance the overall ability of poor households. This research attempts to identify the influencing factors and empowering mechanism of participation in e-commerce. Firstly, a questionnaire survey was conducted among poor households in Mongolia, China. Based on the collected data, a structural equation model (SEM) was established and modified for the empowerment

In the current article, we studied the novel corona virus (2019-nCoV or COVID-19) which is a threat to the whole world nowadays. We consider a fractional order epidemic model which describes the dynamics of COVID-19 under nonsingular kernel type of fractional derivative. An attempt is made to discuss the existence of the model using the fixed point theorem of Banach and Krasnoselskii’s type. We will

In this paper, we investigated the nonlinear oscillations, stability and resonance of a cantilever beam system which carrying an intermediate lumped mass. The response of amplitudes and phases of the differential equation governing is derived applying the multiple scale perturbation (MSP) method. The nonlinear vibration control is analyzed using a new nonlinear modified positive position feedback (MPPF)

China is now faced with severe water shortage and water pollution. To solve the problems, it is imperative to improve the industrial water resource utilization efficiency (IWRUE). Firstly, the authors established an evaluation index system of the IWRUE, including an undesirable output. Next, the directional distance function (DDF) model was adopted to measure the IWRUEs of 30 provincial administrative

A large part of the Internet of Things (IoT)-based smart meters is considered a method to achieve energy efficiency, sustainable development, and the potential of improving the quality, reliability, and efficiency of power supply. These outcomes indicate the importance of the inherent capacity for profound implications on storage, sale, and distribution of electrical power supply. A few of the existing

Oil and gas exploration and development often encounter deep wells, ultra-deep wells, and special wells in complex formation. In these wells, the threaded joint of expandable casing face two problems: low connection strength and poor sealing effect. To solve the problems, this paper explores how the mechanical properties of expandable casing change dynamically downhole through corrosion test and tensile

This article concerns the study of forced convection flow, heat and mass transfer near a moving slender needle using the Buongiorno nanofluid model. Soret and Dufour impacts are analyzed to study the thermo-diffusion and diffusion-thermo impacts on the flow. The governing boundary layer equations are turned into a dimensionless one with the assistance of similarity transformations. After that those

The current work is devoted to investigate evolution problem of nonlocal Cauchy type under “Mittag–Leffler” type fractional derivative which works as nonsingular and nonlocal kernel. For the considered problem, we establish some appropriate results devoted to the qualitative theory of existence and stability analysis. Upon using Banach and Krasnoselskii’s fixed point theorems, we establish the required

To meet the expectation of multi-modal distributions from customers for last-mile delivery, a sustainable two-echelon E-Grocery delivery system is studied, which is motivated by the adaption of autonomous delivery robot (ADRs), parcel lockers in E-Grocery distribution industry. We formulate the multi-modal last mile system as a two-echelon location-routing problem with mixed vehicles and mixed satellites1

In the last decade, a new dawn for research on microwave imaging (MI) has been observed in the medical domain specially in the breast cancer diagnosis, since it offers many advantages over current imaging systems like computed tomography (CT), X-ray radiography etc. Microwave imaging system (MIS) provides a suitable platform for in-depth inspection of breast tissues. It helps in identification and

Currently, gas turbine engines play a vital role in our daily lives. Some of the uses of gas turbine engines include aircraft propulsions, helicopters, submarines, and industrial applications. The thermal efficiency and power output of such engines can be enhanced by increasing the turbine inlet temperature. As a result, different cooling methods are often employed to increase the turbine blade lifetime