This paper proposes an efficient path planning technique for the autonomous collision-free navigation of wheeled mobile robots with simple hardware based on an adaptive neuro-fuzzy inference system (ANFIS). The distance between the robot and obstacles is measured using three ultrasonic sensors that are installed on the left, front, and right of the robot. These distances from the sensors form the inputs

Pavement Condition Index (PCI) is a numerical assessment of pavement conditions based on existing distresses. The PCI values are used for pavement management and rehabilitation programs. Calculating the PCIs using conventional method relies on collecting relevant field data (such as distresses types and severity) by visual inspection method. The collected data are processed to estimate the PCI values

The factor validity and reliability performance analysis of the human cognitive behavior in green sustainable construction system has a great significant in safeguarding the quality and safety. At first, this paper analyzes factors affecting performance reliability of the human cognitive behavior in green sustainable construction system, and looks the humans and their environment as a whole system

Banana peel-derived porous carbon from natural biowaste had been prepared with different annealing temperatures at 300, 400, 500, 600, and 700 °C. The as-prepared carbon powders were carefully characterized with XRD, SEM, TEM, EIS, and XPS measurements and their antibacterial activities were tested toward Escherichia coli (E. coli - ATCC 25922). It was found that 600 °C as-prepared porous carbon exhibited

Future trends are increasingly directed towards replacing traditional energy sources by new and renewable energy ones, with Wind Energy coming first in the row of these sources worldwide. The Egyptian electric power system still has a relatively low penetration level, around 3%, of Wind Energy to its generation mix. However, it is planned to increase this ratio to 14.6% by the year 2035. This paper

In recent times, the need for energy consumption is drastically increasing to fulfill the global requirements of commercial and domestic consumer demands. Energy generation using conventional methods such as oil and gas are not appreciated in the modern era since they are the major contributors for pollution and global warming. To tackle these issues, energy generation using hybrid renewable energy

In the current research, a newly developed ensemble intelligent predictive model called Bagging Regression (BGR) is proposed to predict the compressive strength of a hollow concrete masonry prism (fp). A matrix of input combinations is constructed based on several predictive variables, including mortar compressive strength (fm), concrete block compressive strength (fb), and height to thickness ratio

A heated cylinder of a variable radius and porous surface is moving (stretching and shrinking) with variable velocity in a stagnant fluid. Heat transfer in the flow of viscous fluid from such a cylinder is investigated in this paper. A generalized model is simulated and it presents the diffusion of heat inflow over a cylinder of nonuniform (uniform) diameter, whereas, the porous and variably heated

Heterogeneity in the Internet of Things (IoT) environment is a critical issue for supporting security and privacy. IoT environment has become an open invitation to hackers to control and attack connected IoT devices. So, it has become essential to face security issues & challenges in IoT due to IoT applications' rapid development. Program Analysis (PA) is a method that focuses on defending against

In indoor navigation and visual odometry, cameras may be used as an aiding algorithm for inertial navigation. Fast and accurate image matching is an important task used in various applications in computer vision and visual odometry. In this research, the performances of all recently available detection, description, and matching techniques were compared. The detection techniques included HARRIS, GFTT

Unmanned Aerial Vehicle/Unmanned Ground Vehicle heterogeneous collaborative system can complete complex tasks. In order to monitor and control the two agents simultaneously, a comprehensive ground station is designed. First, the preliminary work is introduced. Then, the architecture of the ground station of the system is proposed. In data communication module, since the amount of data from the system

Several frameworks are introduced to address occupancy-based building performance. However, the performance predictions obtained using these frameworks deviate from real performance. So, this study’s aim is to represent a new framework for the automatic assessment of occupants’ comfort and building indoor performance using BIM and the SD-ABM platform. Initially, an office space in Hong Kong, consisting

In sample surveys, when we need information regarding rare sensitive issues which people often do not prefer to share with others. In such situations this is also awkward for interviewers to ask the direct questions related to confidential and private matters of interviewees. An approach towards the open queries about sensitive issues generally results in the high non-response rates or misleading answers

In this article, the fluid flow and heat transfer on MHD Casson nanofluid influenced by the non-coaxial rotation of moving disk passing through a porous medium is analyzed. A mixture of single-wall and multi-wall carbon nanotubes in the human Casson blood is used as the nanoparticles. Make use of the Laplace transform technique, the analytical solutions of the temperature and velocity profiles are

Global research in landscape architecture demonstrates the perceived safety in parks. This article used Al-Azhar Park, Cairo, Egypt, as a case study to determine the type of prospect that most promotes users' perception of safety. Given that prospects-refuge makes perceived safety perform better, this research focuses on 20 types of prospects concerning the eight factors of perceived safety. Using

The Manila Trench subduction zone is an active convergent plate margin between the South China Sea and northern Philippines. This strongly indicates a high probability for larger earthquakes that could potentially trigger a tsunami in the future and anticipated to affect neighboring countries such as Malaysia which has power plants near the coastal areas. The potential disastrous impact of tsunami

Impact of radiation absorption on chemically reactive and heat generating drilling liquids comprising of water-clay, kerosene-clay or engineoil-clay nanofluids flowing through a vertical channel is considered. Applications are found in rig drilling process for the convective transport of constituent materials up to the surface by the fluid. It is presumed that the cold and hot parallel walls are maintained

Real Estate Online Platforms (REOPs) are used for conveying real estate and property-related information to potential users (buyers, renters, or sellers). The information leveraged through REOPs supports these users in reaching conclusive rent or buy decisions. Despite their promised utility, user perception about accepting online information through REOPs is unexplored. Using a comprehensive questionnaire

Up to the present time, assiduous efforts were devoted to mitigating the development of asphaltic pavement rutting. To this intention, nanotechnology recently received considerable attention to magnify the resistance against such distress. This work elucidated the worthiness of utilizing the industrial carbon nanotubes, CNT, as a strengthening additive. Accordingly, four dosages with an upper limit

Future of generation depends on the renewable energy resources due to lack of fuel and the problems of emissions. Photovoltaic (PV) system is a promising type of renewable energy resources. Non uniformity of irradiance, temperature variation, and partial shading conditions are the main disturbances associated with PV systems. Most of literatures focus on enhancing the PV performance and to achieve

In this paper, a mixed control wheelchair (MCW) is presented to overcome problem related to movement and user command for elderly and paralyzed people. The MCW comprises of five individual control blocks, which are fed at the main control unit to provide appropriate control actions. The main feature of this assistive device is that it can navigate by following the eyesight of the user. The proposed

Geopolymer concrete is considered to be a sustainable alternative to Portland cement in construction industry. The incorporation of nano materials into geopolymer matrix contributes to enhance the mechanical and durability properties of concrete. Carbon nanotubes (CNTs) are characterized by high tensile strength and good durability properties. However, CNTs particles have significant large specific

In the electrical power system optimal power flow is a solution for power management with multi variable equality and inequality constraints. Different algorithms were used to solve the optimum power flow (OPF). This paper proposes the optimal power flow using efficient and reliable optimization technique of enhanced sine cosine algorithm (ESCA). The proposed algorithm used to solve the multi objective

This paper discusses the role of water cavities to break palm oil into glycerol and fatty acids. The cavities were generated by injecting water via a nozzle into palm oil in the Hele-Shaw cell at room temperature, without catalyst and pressure of 2, 6, 10 to 16 MPa. The hydrolysis reaction between triglyceride with water was verified by the Amsterdam density function (ADF) software. This suggest that

In this article, we execute the enhanced (G'/G)-expansion method to search for new and further general closed-form wave solutions to the nonlinear partial differential equation, namely the Benny Luke equation. This method is one of the powerful techniques that come into view in recent time for establishing more exact wave solutions to nonlinear partial differential equations. We have achieved some

Failure caused by corrosion in industries are the major cause of breakdown maintenance. Acoustic emission during the accelerated corrosion testing is a reliable method for corrosion detection, however, classification of these acoustic emission signals by machine learning techniques is still in its infancy. Proposed approach uses a hybrid technique that combines the detection of corrosion through acoustic

In this paper, Crank-Nicolson differential quadrature method based on cubic exponential B-spline (CExpB-spline) functions is presented to approximate the 1D nonlinear hyperbolic Sine-Gordon equation (SGE). The time derivative is discretized by the usual forward difference scheme while the differential quadrature method (DQM) is used to integrate the spatial derivatives. The discretization of the problem

Sediment deposition causes the reduction of aquatic habitats and increase of water velocities within rivers, which negatively impacts the environment and the surrounding ecology. This makes the prediction of river sediment deposition a key factor for the protection of river environments. The prediction of sediment deposition in rivers through the integration of satellite imagery and unsupervised machine

E. Sampathkumar has generalized a graph to a semigraph by allowing an edge to have more than two vertices. Like in the case of graphs, a complete semigraph is a semigraph in which every two vertices are adjacent to each other. In this article, we have generalized a problem noted by Gauss in 1796 about triangular numbers and shown that it is the deciding factor of when a semigraph is complete. Let P

The historic core of Rosetta, Egypt, is a possible nomination for UNESCO World Heritage status. However, the enduring controversy over the conservation scheme for Rosetta’s old market has highlighted the difficulties in reaching a satisfactory decision. The challenge lies in determining the best location for relocating the market without affecting locals’ life and culture of locals as part of the urban

Monitoring the changes in people’s presences in public spcaes can play a vital role in enhancing placemaking research. This study investigated Herrengasse Street in Graz, Austria, and Oxford Street in London, the UK, using a systematic review, real scene interpretations, and expert advice to check the casual and deductive arguments. A six-step conceptual framework was then developed to prioritize the

There are three main criteria that account for a construction project’s success: completion on-time, within budget, and following the specifications. Nowadays, construction projects are facing various problems where delays are considered major one of them, particularly in Egypt. Analyzing construction delay causes while attempting to mitigate their impact is a matter of crucial importance. That’s why

Construction and demolition waste (CDW) is a critical challenge facing the construction industry. It leads to deterioration of the triple bottom line of sustainability. Unfortunately, the CDW management research in Egypt lacks studies investigating (1) the variations in CDW generation (CDWG) among different types of construction projects, and (2) the factors affecting CDW reduction (CDWR). Based on

Due to their essential role in forming good quality urban life, urban structures need to be comprehensively understood. The use of quantitative methods and measures to analyze the urban fabric metrics is crucial to understand the physical and spatial properties at multiple scales. This research aims to study the structures of urban blocks by using computational and metric methods. Three essential variables

The effect of width opening downstream of chute structure on the depth and the dimensions of downstream scour hole was investigated using a physical model in the presence of two different block geometries, including a USBR block and a lattice block installed on chute. For this purpose, five chute structures with baffled blocks were designed and constructed, including three models with a divergence

The impact of microbial calcium carbonate on concrete strength has been extensively evaluated in the literature. However, there is no predicted equation for the compressive strength of concrete incorporating ureolytic bacteria. Therefore, in the present study, 69 experimental tests were taken into account to introduce a new predicted mathematical formula for compressive strength of bacterial concrete

Nowadays, different types of dispatchable and non-dispatchable distributed energy resource (DER) units, combined heat and power (CHP) plants as well as heat only units are integrated into a micro-grid (MG) platform. These facilities can help MG operators to satisfy the required electricity and heat demands of controllable and non-controllable loads even with no power exchange between the external main

Construction organizations are challenged with effective management of their human resource (HR) as both are integral to each other. But the state of practice in the developing countries is not encouraging and construction professionals found themselves less motivated and enthusiastic about their job. This pushes to study the motivational needs of construction professionals of different career levels

Solar energy cooperatives have been gaining importance day by day in renewable energy resources. However, selection of the establishment points of renewable energy cooperatives in the distribution system is a technical problem. In this study, the effects of regional solar power system installations on the reduction of power losses in the distribution system and the expansion of solar energy cooperatives

The regularized and the modified regularized long wave (RLW and MRLW) equations are solved numerically by the Bernstein polynomials in both the space and time directions based on Kronecker product. In this paper, we applied a fully different Bernstein collocation method than the other methods which used Bernstein polynomials to solve the problems. The approximate solution is defined by the Bernstein

Annually, the thermal coal industries produce billion tons of fly-ash (FA) as a waste by-product. Which has been proficiently used for the manufacture of FA based geopolymer concrete (FGC). To accelerate the usage of FA in building industry, an innovative machine learning techniques namely gene expression programming (GEP) and multi expression programming (MEP) are employed for forecasting the compressive

This communication discusses the Marangoni convection of hybrid nanofluid. Hybrid nanofluid is made up of two nanoparticles (MnZiFe2O4-NiZnFe2O4) and one base fluid (H2O). Darcy Forchheimer porous medium effect is inserted in momentum equation. Entropy generation in the flow due to heat transfer irreversibility, mass transfer irreversibility and viscous dissipation irreversibility is calculated and

An acceptable viscosity and an easy penetrability of cement - limestone filler grout in the granular matrix of self compacting concrete are an important factors that affecting both its rheological and its hardened properties. This experimental and theoretical work consists to study the effect of limestone filler fineness on the rheological behavior of cement - limestone filler grout. In the first part

Sb2O3 nanoparticle was selected as it is expected to reduce the aging effect on bitumen, and is a novel material hasn’t studied yet in the literature. Bitumen was modified by antimony trioxide (Sb2O3) nano particle. The rutting performance of Sb2O3 modified bitumen and the performance of Hot Mix Asphalt (HMA) was investigated. Multiple stress creep recovery (MSCR) test was performed. HMA mixtures were

A theoretical model for segmental contractions of the small intestine is developed using lubrication method. Here, the nonlinear partial differential equations governing the fluid flow were normalized in viscous regime and solved semi-analytically for a power law fluid under long wavelength approximation on a MatlabTM platform. The segmental contraction was defined as a sinusoid with choice for variation

This paper describes the development of an integrated approach for water pipe network calibration and lea quantification. The proposed approach provides a practical procedure that merges field measurements and mathematical modeling for leak quantification and network calibration. The use of Evolutionary Algorithms (EA) using both Genetic Algorithms (GA) and Shuffled Complex Evolution – University of

In this paper, the problem concerned is to find the optimum values of the seven uncertain parameters ξ1, ξ2, ξ3, ξ4, λ, Rc, and β of the semi-empirical equation that defines the proton exchange membrane fuel cell (PEMFC) polarization (I/V) relationship using a recent optimization technique, the marine predator algorithm (MPA). The main target of this study is to obtain a very precise PEMFC steady state

Distribution of sediment concentration in open-channel flows, particularly in rivers, is one of the most important factors in understanding the river behavior, water quality, and design of hydraulic structures. Therefore, to determine the amount of transported suspended sediment, the sediment concentration distribution must be measured with high accuracy. In the present study, four intelligent methods

Flexible systems anchored to the ground are low visual impact alternatives to be used in slope protection. With the aim of reducing their installation time and costs the mechanical union between layers of membranes is proposed to be done in warehouses instead of independent installations on site. The most appropriate component selection and linking method is selected using multi-criteria decision analysis

This study proposes a new acceptance sampling scheme, namely mean ranked sampling scheme, for efficient decision of statistical quality control. The proposed scheme is based on ranked set sampling under exponential distribution for acceptance or rejection of a lot. Two-point method on operating characteristic function is used for the derivation of plan parameters assuming approximation of exponential

In this research paper, we discuss systems of conformable linear differential equations. The conformable fundamental exponential matrix has been used to express the solution of the homogeneous and nonhomogeneous systems. The method of variation of parameters has been investigated to find the particular solution of the conformable system of nonhomogeneous linear differential equations. Several illustrative

Synthetic geotextile envelope can be used as a replacement of sand filters for subsurface drainage pipes. However, clogging and blocking can occur if the filter does not match the soils properly. This paper presents a laboratory study on hydraulic performance of nonwoven geotextile as subsurface drain filter for silty loam soil in eastern China. Two selected synthetic geotextiles were tested. Results

This theoretical investigation has been done to develop a mathematical model which could used to study such plasma system in the space where electrons follow non-extensive distribution, ions are positively and negatively charged, and dust particles are also charged like ions (both positive and negative) in characteristics in the presence of an magnetic field. Using the standard reductive perturbation

Gabions are structures that control the erosion and scouring whilst provide an eco-friendly and sustainable solution, used also for energy loss. Despite a wide range of previous studies, different hydraulic aspects of gabions have not yet been understood well. In that sense, this study investigates the behavior of hydraulic parameters of solid and gabion inclined drops. The results indicated that with

This study seeks to determine the rheological properties of unaged and RTFO-aged bio-asphalt binders using experimental and modelling methods. Crude palm oil (CPO) was used as a bio-oil at varying percentages of 0, 5, 10 and 15% by total weight of asphalt binder. The dynamic shear rheometer (DSR) was used to investigate the rheological properties of bio-asphalt binders. The multilayer feed-forward

For hydrocarbon exploitation in tight glutenite, glutenite brittleness plays an important role in fracturing efficiency, but the detailed effect is not entirely clear. In this study, considering rock heterogeneity, RFPA (Rock Failure Process Analysis) was applied to establish the three-dimension computational model. An improved rock brittleness index considering post-peak properties in rock uniaxial

Autonomous vehicles demand a continuous path to provide the passengers with physical ease and relaxation. Smooth experience in autonomous vehicles is very essential and can be accomplished by having good trajectories. The trajectory generated by the interpolation algorithm for Geometric Hermite is provided in this paper. The proposed algorithm calculates a path based on a set of geometric Hermite data

The construction industry is one of the sectors where accidents causing injuries among workers appear more frequently than in other industries. The safety issues are of high interest. There are special regulations introduced to protect all people engaged on a construction site. Besides the human attitude, every accident causes forced brakes in the construction process. It leads to financial losses