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Articles 5341 - 5370 of 11138

Full-Text Articles in Engineering

Nonlinear Model Predictive Control For Cooperative Control And Estimation, Pengkai Ru May 2017

Nonlinear Model Predictive Control For Cooperative Control And Estimation, Pengkai Ru

Mechanical and Aerospace Engineering Dissertations - Archive

Recent advances in computational power have made it possible to do expensive online computations for control systems. It is becoming more realistic to perform computationally intensive optimization schemes online on systems that are not intrinsically stable and/or have very small time constants. Being one of the most important optimization based control approaches, model predictive control (MPC) has attracted a lot of interest from the research community due to its natural ability to incorporate constraints into its control formulation. Linear MPC has been well researched and its stability can be guaranteed in the majority of its application scenarios. However, one issue …

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Characterization Of Vertically Split Distribution-Wet Cooling Media Used In Data Centers, Mullaivendhan Varadharasan May 2017

Characterization Of Vertically Split Distribution-Wet Cooling Media Used In Data Centers, Mullaivendhan Varadharasan

Mechanical and Aerospace Engineering Theses - Archive

Data Centers houses substantial number of information technology (IT) equipment like computer servers and storage modules associated with various electronic components which consume high volume of electricity. The IT equipment in data center housing keeps dissipates heat energy as it is constantly running day and night. To keep the data center environment under thermally control and to favor the reliability of electronic components, we need to adopt a cooling technique which aids the module level cooling, with due consideration of the size of the data center and its geographical location. One of the adopted cooling technique in data center thermal …

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Composite Plate Optimization With Structural And Manufacturing Constraints, Deepak Polaki May 2017

Composite Plate Optimization With Structural And Manufacturing Constraints, Deepak Polaki

Mechanical and Aerospace Engineering Theses - Archive

This is a design optimization study that focuses on the value of free size optimization technology on composite structures which incorporates realistic structural requirements and practical manufacturing limitations to achieve an iterative design with effective structural performance. To detail a study on such practical implementation, a sample structure is required. A rectangular composite laminate with a central hole cutout is considered for this study and is designed using finite elemental tools which includes compression, tension and shear loading conditions with load reactions at bolted joints and buckling stability. Free size optimization and size optimization are used in this study to …

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Reliability Assessment Of Solder Joint Using Bga Package – Megtron 6 Versus Fr4 Printed Circuit Boards, Mugdha Anish Chaudhari May 2017

Reliability Assessment Of Solder Joint Using Bga Package – Megtron 6 Versus Fr4 Printed Circuit Boards, Mugdha Anish Chaudhari

Mechanical and Aerospace Engineering Theses - Archive

When it comes to the mechanical and electrical seam of the Printed Circuit Board (PCB) and package, reliability of the board plays a major impact on PCB. As the frequency increases, losses in signals increase. This necessitates the use of new materials for such applications. Nelco 4000-13EPSI, Rogers 4350B, Panasonic Megtron 6 are few high-speed materials used. Studies have shown that Megtron 6 has the least dielectric losses so far, low transmission loss, high heat resistance and has low weight loss than the FR-4 boards. With an increasing demand for high performance, reliability and lower costs, the field of electronic …

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Solder Joints Design Optimization Of Qfn Packages For Different Boards By Investigating Solder Joint Reliability, Rishikesh Vilas Tendulkar May 2017

Solder Joints Design Optimization Of Qfn Packages For Different Boards By Investigating Solder Joint Reliability, Rishikesh Vilas Tendulkar

Mechanical and Aerospace Engineering Theses - Archive

Quad Flat No-lead package (QFN) is one of the most cutting-edge technologies emerged in the market, exhibiting high performance and efficiency with unparalleled cost effectiveness. QFN, a leadless package, is an ideal choice for applications where size, weight thermal and electrical characteristics are critical, particularly in mobile and handheld devices. Applications like automotive, defense and high current circuits require the package to be mounted on thick printed circuit boards (PCB). The motivation of this work is to understand the effect of design variations of solder joints affecting reliability and optimize the solder package to improve reliability for application on different …

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An Improved Method For Measurement Of Radial Thermal Conductivity Of Cylindrical Bodies, Salwa Shaik May 2017

An Improved Method For Measurement Of Radial Thermal Conductivity Of Cylindrical Bodies, Salwa Shaik

Mechanical and Aerospace Engineering Theses - Archive

Li-ion cells are ubiquitously found in day to day electronic devices due to their high power density storage capacity. These batteries are known to exhibit sharp reduction in performance at high temperature. Due to this, several attempts have been made in the past to measure thermal properties of the Li-ion cell. This work improves upon past measurements by showing that heat loss during measurements is non-negligible, and by developing an analytical model to account for such heat loss. Experimental measurements carried out on multiple materials demonstrate non-negligible heat loss. When accounted analytically, these data result in thermal conductivity values that …

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Electro-Pneumatic Shifting And Servo Control Of A Clutch For A Fsae Racecar, Rahul Janardhan Chalmela May 2017

Electro-Pneumatic Shifting And Servo Control Of A Clutch For A Fsae Racecar, Rahul Janardhan Chalmela

Mechanical and Aerospace Engineering Theses - Archive

FSAE is an international student design competition held by SAE International where students design, build and compete in static events like cost, design and dynamic events ranging from acceleration, autocross to endurance. UTA Racing has been a part of FSAE since 1982 and have been using a mechanical design for their shifter and clutch since then. This year for the 2017 design competition an electro-pneumatic system is developed to replace the mechanical system. This system consists of pneumatic cylinders controlling a sequential shifter and a servo clutch. The cylinders are controlled using direction control valves, these receive their signals from …

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Rack Level Study Of Hybrid Cooled Servers Using Warm Water Cooling With Variable Pumping For Centralized Coolant System, Chinmay Sanjay Kshirsagar May 2017

Rack Level Study Of Hybrid Cooled Servers Using Warm Water Cooling With Variable Pumping For Centralized Coolant System, Chinmay Sanjay Kshirsagar

Mechanical and Aerospace Engineering Theses - Archive

As the worldwide demand for the data centers grows, so does the size and load placed on data centers which leads to the applied constraints on power and space available to the operator. Cooling power consumption is a major contributor of the total energy consumption of the system. In the process of optimization of cooling energy consumption per performance unit, liquid cooling technology has emerged as one of the most viable solutions. In this rack level study, 2OU (Open U) hybrid cooled web servers are tested for an evaluation of warm water cooling in centralized coolant system. Effects of higher …

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Load Carrying Capacity Management Of Compound Anisotropic Composite Rings Under External Pressure, Salman Bakhrayba May 2017

Load Carrying Capacity Management Of Compound Anisotropic Composite Rings Under External Pressure, Salman Bakhrayba

Mechanical and Aerospace Engineering Theses - Archive

Composites have much higher strength than conventional materials such as steel. This makes it attractive to replace heavy loaded structural elements, made traditionally from steel, by elements made from composites. However, it is not a trivial task for statically indeterminate structures due to anisotropy of elastic and strength properties of composites. Present investigation is done for a ring subjected to external load. Such rings are used as bulkheads in many applications. Dependence of ultimate external pressure on thickness of the ring is nonlinear one. It is related to non-uniformity of distribution of circumferential stresses, with anisotropy of material, with set …

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Comparative Study Of Viscoelastic Modeling And Linear Modeling For Wafer Level Chip Scale Package Under Drop Impact, Navya Sri Reddy Kasi Reddy May 2017

Comparative Study Of Viscoelastic Modeling And Linear Modeling For Wafer Level Chip Scale Package Under Drop Impact, Navya Sri Reddy Kasi Reddy

Mechanical and Aerospace Engineering Theses - Archive

Wafer level chip scale packages are one the preferred choice in the electronic industry to meet the need of new miniaturization of the recent devices. It has high efficiency in packaging and has low cost. On the other hand, the drop impact failure is one of the growing risk in day to day use of the portable devices. Therefore, to ensure product quality and to integrate more complicated functionality in these devices comprehensive reliability tests need to be performed before delivering the product. Accelerated thermal cycling, drop testing and power cycling are some accepted test methods used to access board …

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A Comparative Study Of Wooden And Composite Crossarm Of An Electric Utility Pole, Amith Venkatesh May 2017

A Comparative Study Of Wooden And Composite Crossarm Of An Electric Utility Pole, Amith Venkatesh

Mechanical and Aerospace Engineering Theses - Archive

Currently, most of the crossarms existing in the nation are made of wood. However, wood has a set of negative features like shorter life span due to environmental cracking, damages by insects and birds. Secondly, an insufficient strength and stiffness which is compensated either by increasing the cross-section or by reducing the span between two poles. Also, it’s reduced insulating property in case of high humidity of air which can be accounted to its hygroscopic behavior. Replacement of wooden crossarms by composite crossarms is a known solution to many problems. However, the existing projects are far from optimal. Present investigation …

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Thermal Characterization Of An Isolated Hybrid Cooled Server With Pump And Fan Failure Scenarios, Uschas Chowdhury May 2017

Thermal Characterization Of An Isolated Hybrid Cooled Server With Pump And Fan Failure Scenarios, Uschas Chowdhury

Mechanical and Aerospace Engineering Theses - Archive

Modern day data centers are operated at high power for increased power density, maintenance, and cooling which covers almost 2 percent (70 billion kilowatt-hours) of the total energy consumption in the US. IT components and cooling system occupy the major portion of this energy consumption. Although data centers are designed to perform efficiently, cooling the high-density components is still a challenge. So, alternative methods to improve the cooling efficiency has become the drive to reduce the cooling cost. As liquid cooling is more efficient for high specific heat capacity, density, and thermal conductivity, hybrid cooling can offer the advantage of …

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Comparison Of Mechanical Behaviour Of Metallic And Composite Front Door Of A Standard Automobile Car By Fea, Aniket Chandu Thosar May 2017

Comparison Of Mechanical Behaviour Of Metallic And Composite Front Door Of A Standard Automobile Car By Fea, Aniket Chandu Thosar

Mechanical and Aerospace Engineering Theses - Archive

With the advent of technology, materials have advanced many folds; one such technical revelation has been Fiber-reinforced Composite Materials. Composite materials have two major advantages, among many others: improved strength and stiffness, especially compared to other materials on a unit weight basis and low density with ease of manufacturing. These advantages have led to new aeronautical, automobile and marine designs that are radical departures from past efforts based on conventional materials. This paper focusses on a comparative study between Aluminum Alloys, Manganese alloys, structural steel, Composite materials and investigates the static and dynamic behaviors for a composite front door of …

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Experimental And Computational Investigation Of The Need For An Acclimation For Operating It Equipment, Ramesh Prasanna Manohar May 2017

Experimental And Computational Investigation Of The Need For An Acclimation For Operating It Equipment, Ramesh Prasanna Manohar

Mechanical and Aerospace Engineering Theses - Archive

Acclimation of IT equipment is not only for newly commissioned equipment but are also for the equipment that is already in use. In conventional Data Center, IT Equipment are cooled by traditional cooling methods, but due to increasing serious energy crisis, Data Centers are Free cooled because of the reduced power consumption. Free Cooling a Data Center is, when the outside air conditions are appropriate, they are drawn into the Data Center to cool the Operating IT Equipment. Data Centers uses dampers to control the type of cooling to be used. Due to a rapid change in the temperature and …

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Numerical Study Of Marangoni Convection And Mass Transport In Microdroplets, Viraj Parag Sabane May 2017

Numerical Study Of Marangoni Convection And Mass Transport In Microdroplets, Viraj Parag Sabane

Mechanical and Aerospace Engineering Theses - Archive

Marangoni convection is a flow resulting from a surface tension gradient at air/liquid interface caused by temperature gradient, concentration of surfactant or applied electric field. Marangoni convection when caused by temperature gradient is also known as thermo-capillary effect. A microgravity condition presents an ideal case to study this phenomenon, since interfacial forces are dominant over body forces. Hence Marangoni convection inside the micro-droplet was studied both numerically and experimentally. The potential application at micro-scale includes particle separation, chaotic mixing inside the droplet and possible enhancement in liquid liquid extraction. To explore these application, firstly flow field inside a droplet was …

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Design And Analysis Of A 10” Carbon Fiber Wheel For A Formula Sae Racecar, Pratik Ganesh G Bhagwat May 2017

Design And Analysis Of A 10” Carbon Fiber Wheel For A Formula Sae Racecar, Pratik Ganesh G Bhagwat

Mechanical and Aerospace Engineering Theses - Archive

Formula SAE is an engineering design competition for students where the goal is to design, build, and compete a Formula-style single seater race vehicle. With a legacy dating back to 1982, UTA Racing has been one of the most competitive teams. In this project, a carbon fiber 10” wheel is designed for the first time, achieving reduced unsprung weight and lower rotational inertia, both of which are key performance characteristics in vehicle dynamics. The design follows Tire and Rim Association guidelines to ensure dimensional compatibility and ease of assembly and is analyzed for 2G cornering with 3G bump. The simulations …

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Cfd Optimization Of The Cooling Of Yosemite Open Compute Server, Aditya Gupta May 2017

Cfd Optimization Of The Cooling Of Yosemite Open Compute Server, Aditya Gupta

Mechanical and Aerospace Engineering Theses - Archive

Rising energy demands in data centers have constantly made thermal engineers to think and come up with innovative cooling solutions in data centers. It is of utmost importance to have control over the environmental impact of Data Centers. In 2011, the Open Compute Project was started which aimed at sharing energy efficient practices for data centers. The hardware and electrical specifications of the first open compute server – Freedom was shared on open compute project’s website. It was a vanity free design and its components were custom designed. It was deployed in one of the data centers in Prineville, Oregon …

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Thermal Optimization And Validation Of Gan High Electron Mobility Transistor, Tanmay Pradip Kavade May 2017

Thermal Optimization And Validation Of Gan High Electron Mobility Transistor, Tanmay Pradip Kavade

Mechanical and Aerospace Engineering Theses - Archive

Gallium Nitride (GaN) is a binary III/V wide band gap semiconductor used in power electronics for operations at high power densities and high speeds. GaN has excellent characteristics like high break-down voltage, high thermal conductivity, and high electron saturation velocity which have led to an intensive study and wide use of GaN in many fields. Some of these fields range from amplifiers, MMIC, laser diodes, pulsed radars and counter-IED jammers to CAT-V modules and fourth generation infrastructure base-stations. Currently GaN devices suffer from high temperature due to self-heating which reduces the mean time to failure. In this study package level …

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Conjugate Heat Transfer And Thermo-Structural Analysis Of The Actively Cooled Multi-Stage Conical Nozzle And Hypersonic Low-Reynolds Diffuser Of The New Arc-Heated Wind Tunnel (Awht-Ii) Of The University Of Texas At Arlington, David Ray Campbell May 2017

Conjugate Heat Transfer And Thermo-Structural Analysis Of The Actively Cooled Multi-Stage Conical Nozzle And Hypersonic Low-Reynolds Diffuser Of The New Arc-Heated Wind Tunnel (Awht-Ii) Of The University Of Texas At Arlington, David Ray Campbell

Mechanical and Aerospace Engineering Theses - Archive

Arc-heated wind tunnels are the primary test facility for screening and qualification of candidate materials for hypersonic thermal protection systems (TPS). Via an electric arc that largely augments the enthalpy (by tens of MJ/kg) of the working fluid (Air, Nitrogen, CO2 in case of Mars-entry studies) passed through a converging-diverging nozzle at specific stagnation conditions, different regimes encountered in entry and re-entry hypersonic aerothermodynamics can be simulated. Because of the high-enthalpies (and associated temperatures that generally exceed the limits required by the thermo-structural integrity of the facility) the active cooling of the arc-heated wind tunnel’s parts exposed to the working …

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Structural Optimization & Reliability Of 3d Package By Studying Crack Behavior On Tsv & Beol & Impact Of Power Cycling On Reliability Flip Chip Package, Unique Rahangdale May 2017

Structural Optimization & Reliability Of 3d Package By Studying Crack Behavior On Tsv & Beol & Impact Of Power Cycling On Reliability Flip Chip Package, Unique Rahangdale

Mechanical and Aerospace Engineering Theses - Archive

The 3D packaging is stacked of chips on top of another which is emerging as a powerful technology that satisfies such integrated circuit (IC) package demands. Most of the stress develops at interfaces and the interface delamination of TSV may encounter which is mainly driven by a shear stress concentration at the point. In this study, the effect of package structure on the failure metric of the 3D package has been studied. J-integral has been used to quantify the crack driving force. The crack is modeled at the TSV and BEOL (Back End of the Line) and the die -substrate …

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Design Optimization Of Race Car Steering Knuckle For Additive Manufacturing, Yobani Martinez May 2017

Design Optimization Of Race Car Steering Knuckle For Additive Manufacturing, Yobani Martinez

Mechanical and Aerospace Engineering Theses - Archive

Additive manufacturing enables increased geometric complexity in structural configuration compared with conventional manufacturing methods. A Physics-first Computer Aided engineering (CAE) process beginning with structural topology optimization enables engineers to take advantage of this increased geometric design freedom. This work develops and demonstrates the steps and tools necessary to realize complex design configuration for additive manufactured. This report looks at the race car steering knuckle using the UTA FSAE upright as a case study. The stiffness driven upright component design is executed using topology optimization and NURBS based surface modeling tools. The topology optimization model is developed for 3 different load …

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Thermal Management Of High Power Multi Chip Module By Design Optimization Of Segregated Serpentine Flow Cold Plate, Krishna Chaitanya Siripurapu May 2017

Thermal Management Of High Power Multi Chip Module By Design Optimization Of Segregated Serpentine Flow Cold Plate, Krishna Chaitanya Siripurapu

Mechanical and Aerospace Engineering Theses - Archive

Data center environment cooling requirements became a challenge with rapid increasing microprocessor power densities which leads to non-uniform distribution of temperature. A practical cooling solution which relies on the segregated flow of cooling resources based on power density for thermal management of high power equipment is introduced. This minimizes energy consumption of cooling infrastructure. Performance of existing cold plate is previewed and amount of savings possible is shown from numerical analysis of segregated model. Model is designed by considering manufacturing feasibility to make samples for proposed solution for future experimental study. A multi-chip module is chosen as a base for …

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Numerical And Analytical Study Of Curvature Effects In Laminar Shock Wave/Boundary Layer Interactions, James Ray Grisham May 2017

Numerical And Analytical Study Of Curvature Effects In Laminar Shock Wave/Boundary Layer Interactions, James Ray Grisham

Mechanical and Aerospace Engineering Dissertations - Archive

Shock wave/boundary-layer interactions (SBLIs) are one of the most complex flow phenomena because of the different types of physics involved (i.e., viscous versus inviscid) and their side effects such as boundary layer separation and extreme localized heating. Control surfaces based on compliant mechanisms are becoming a reality and introduce an additional variable into the already complex SBLI, namely surface curvature. The purpose of the present work is to systematically study the effects of surface curvature on laminar, ramp-induced SBLIs. This is accomplished using numerical and theoretical approaches in the form of numerical solutions to the compressible Navier–Stokes equations and triple-deck …

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Development Of An Advanced Geometry Toolkit Framework For Fitting Complex Topology-Optimized Mesh Structures, Harshit Girishkumar Jani May 2017

Development Of An Advanced Geometry Toolkit Framework For Fitting Complex Topology-Optimized Mesh Structures, Harshit Girishkumar Jani

Mechanical and Aerospace Engineering Theses - Archive

Additive Manufacturing is playing a significant role in developing complex geometries which are not possible by conventional Manufacturing Processes. Topology optimization is playing key a role in deciding conceptual design for additive manufacturing. The output of topology optimization is rough and noisy surfaces. Fitting these surfaces poses challenging task to a designer as it is a tedious and a time-consuming process. The main aim of this research is to automate the process of smoothing noisy meshes. In this research work, I have developed algorithms in MATLAB to create NURBS (Non-Uniform B-Spline) surface patches from given a set of control points. …

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A Parametric Study On Thermal Mixing Of Ambient Air And Return Air Streams In A Mixing Chamber Of A Data Center Cooling, Pavan Vijaykumar Kaulgud May 2017

A Parametric Study On Thermal Mixing Of Ambient Air And Return Air Streams In A Mixing Chamber Of A Data Center Cooling, Pavan Vijaykumar Kaulgud

Mechanical and Aerospace Engineering Theses - Archive

Thermal Mixing of ambient air and return air streams in a mixing chamber for data center cooling Keywords: Data center cooling, Air side economization, Mixing chamber geometry Pavan Kaulgud, Dr. Dereje Agonafer Air side economization is an arrangement of duct, damper and automatic control system which together allow to introduce outside air to reduce or eliminate the mechanical cooling during mild or cold weather. In this process ambient air is drawn inside from environment, passed through filter to get rid of contaminants and then is introduced to the cold aisle of data center. According to ASHRAE, use of air side …

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Finite Element Analysis Of Composite Aircraft Fuselage Frame, Aditya Milind Dandekar May 2017

Finite Element Analysis Of Composite Aircraft Fuselage Frame, Aditya Milind Dandekar

Mechanical and Aerospace Engineering Theses - Archive

Composites have been introduced in aircraft industries, for their stronger, stiffer, and lighter properties than their metal-alloys counterparts. The general purpose of an aircraft is to transport commercial or military payload. Aircraft frames primarily maintains the shape of fuselage and prevent instability of the structure. Fuselage is similar as wing in construction which consist of longitudinal elements (longerons and stringers), transverse elements (frames and bulkheads) and its external skin. The fuselage is subjected to forces such as the wing reactions, landing gear reaction, empennage reaction, inertia forces subjected due to size and weight, internal pressure forces due to high altitude. …

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Steady State And Transient Analytical Modelling Of Non-Uniform Convective Cooling Of A Microprocessor Chip Due To Jet Impingement, Swapnil D. Luhar May 2017

Steady State And Transient Analytical Modelling Of Non-Uniform Convective Cooling Of A Microprocessor Chip Due To Jet Impingement, Swapnil D. Luhar

Mechanical and Aerospace Engineering Theses - Archive

Heat removal from microprocessor chips with multiple regions of dynamic heat generation remains a critical technological challenge. Excessive temperature rise is undesirable for performance as well as reliability. Jet impingement cooling has been widely investigated as a potential thermal management technique due to the capability of localized cooling and of dynamically following the heat generation distribution. A jet offers large local convective heat transfer coefficient, for which theoretical models and correlations have been proposed for a variety of scenarios. However, not much work exists on using this information to determine the resulting temperature distribution. This work addresses this need by …

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Manufacturing And Characterization Of A 3d-Printable, Antibacterial, Magnesium Oxide Nanoparticles Reinforced Abs Filament, Saket Thapliyal May 2017

Manufacturing And Characterization Of A 3d-Printable, Antibacterial, Magnesium Oxide Nanoparticles Reinforced Abs Filament, Saket Thapliyal

Mechanical and Aerospace Engineering Theses - Archive

This research work consists of two phases. In phase one it is intended to manufacture an antibacterial 3D printable filament by extruding a solid state mixture of (MgO) nanoparticles (NPs) and Acrylonitrile Butadiene Styrene (ABS) pellets. A single screw extruder was used to extrude ABS pellets containing 0, 0.5, 1, 2 and 4 wt. % MgO NP. This phase deals with manufacturing and testing the filament for mechanical properties, antibacterial properties and 3D printability. On one hand tensile strength, ductility and 3D-printabiliy were observed to decrease with increasing concentrations of MgO NP in ABS matrix, on the other hand the …

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Numerical Analysis Of A Flapping Elliptic Flat Plate In Hover: A Study Of Leading Edge Vortex Dynamics, C. Vivek Nair May 2017

Numerical Analysis Of A Flapping Elliptic Flat Plate In Hover: A Study Of Leading Edge Vortex Dynamics, C. Vivek Nair

Mechanical and Aerospace Engineering Theses - Archive

Flapping flight is an area of research that is gaining a lot of prominence in engineering, especially with the increase in interest in applying the flapping mechanism of natural fliers to small scale MAVs. The ongoing contributions to this field include studies finding optimal wing shape, flap frequency, and flap trajectories. Flapping flight is an unsteady aerodynamic mechanism, and consists of 3 interactive forces: delayed stall, rotational circulation, and wake capture. The dominant lift generating mechanism is the leading edge vortex (LEV). Natural fliers optimize their flap to gain maximize LEV stability. For our research we simulate 2 cases of …

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Experimental And Computational Study Of The Acclimation Of New It Equipment, Neil Johnson Vazhappilly May 2017

Experimental And Computational Study Of The Acclimation Of New It Equipment, Neil Johnson Vazhappilly

Mechanical and Aerospace Engineering Theses - Archive

Acclimation of newly commissioned IT equipment is an important step that is necessary for safe operations. Proper acclimation is required to prevent an unnecessary condensation from forming and causing premature failure in the equipment. Acclimation is particularly important in cold weather shipping where the component or server reaches the destination well below the destination data center’s dew point, resulting in moisture and condensate. Operating the equipment before it acclimates might cause damage, while waiting too long for the equipment to acclimate might cost companies expensive computational time. This study tries to address the issue by studying the various factors that …

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