One of the biggest issues of Indian economy in 2017 was the implementation of Goods and Services Tax (GST), and the social networks witnessed a lot of opinion contrasts and conflicts regarding this new taxation system. Inspired by such a large-scale tax reformation, we developed an experimental approach to analyze the reactions of public sentiment on Twitter based on popular words either directly or

This paper estimates the volumetric shrinkage for thermoplastic Polypropylene (PP) injection molded components made using digital Acrylonitrile butadiene styrene (ABS) mold. The parameters affecting volumetric shrinkage for the digital ABS mold are mold temperature and injection temperature, cooling time, hold pressure and injecting speed. Therefore, twelve standard benchmark CAD model were selected

Vanadis 4E is a powder metallurgic tool steel that provides an excellent combination of wear resistance and ductility for high-performance tools, and it is more machinable than AISI D2 tool steel. This study applied grooving on Vanadis 4E powder metallurgic tool steel with the dimensions of 80 × 105 × 35 mm, and during the milling process, investigated the effects of cutting parameters on surface roughness

This paper discusses the practical aspects of data acquisition and signal processing techniques involved while developing an impedance tube. Microphones, data acquisition systems, set of speakers were carefully selected, calibrated, and assembled as one unit. The raw time signal is acquired through a Virtual Instrument (VI) developed in LabVIEW, and the mathematical equations involved in the process

The present study emphasizes understanding the crack propagation in layered structures under dynamic loading conditions when the property jumps occur across the crack front. Layered plates were made by joining polymethylmethacrylate (PMMA) and epoxy sheets using an epoxy-based adhesive (Araldite). Single edge notched (SEN) specimens were subjected to dynamic loading using a modified Hopkinson bar setup

Axial flux machines (AFM) have inherent non-uniform flux density distribution in radial direction leading to improper utilisation of iron part. The objective of this paper is to shape the edges of tooth lamination along radial direction to achieve uniformity in radial flux density distribution using multi-slice analytical approach. The machine considered is an axial flux induction machine (AFIM) with

The present work reports an experimental investigation on Powder-Mixed Electro-Discharge Machining (PMEDM) of Inconel 718 superalloy using Multi-Walled Carbon Nanotubes (MWCNTs) dispersed in kerosene, as dielectric media. Effects of variation of peak discharge current along with concentration of carbon nanotubes in the dielectric fluid are studied in purview of machining performance indicators including

A metric structure is imposed on state space such that solutions to 1st order state variable model of a linear system are geodesics subject to restrictions on the system and input matrices. For linear time invariant systems, a 2nd order state variable model of an extended system to a given 1st order model is derived. The metric is tailored to systems under consideration.

Chronic lung disease, in which the airway gets obstructed, is known as Chronic Obstructive Pulmonary Disease (COPD). According to WHO, COPD kills more than 3 million people every year. Spirometry is used to diagnose COPD; has many limitations. There is a need for physiologically accurate and easy to perform diagnosis technology. Researchers confirmed the activity of sternomastoid muscle in COPD with

This paper describes the design of low-power direct conversion transceiver front end for WPAN (Wireless Personal Area Network) applications using TSMC 0.13 µm CMOS technology. Subharmonic mixers are proposed to mitigate the drawbacks of DC offset problem in direct conversion receiver and injection locking problem in direct conversion transmitter. The receiver front end comprises a low-noise amplifier

In this paper, experimental studies on two laminated composite hat-stiffened panels with equally spaced stiffeners have been carried out with application of axial compression load on the panel for the determination of the pre-buckling and post buckling behavior. A non-linear buckling analysis on the hat-stiffened panel has also been performed under compression load with application of finite element

In the current study, friction welding of two different steels, namely low alloy steel and austenitic stainless steel was done. For conducting welding, an in-house experimental set-up was designed and fabricated. The steels were friction welded by using various axial pressures at a uniform circular speed. Influence of axial pressure on the joint strength of the friction welded specimens such as tension

Clustering of tweets is useful for analyzing the attitudes of people towards a particular product. The companies can use this analysis to modify their products to meet the needs of people. Recently, K-means clustering is widely used to cluster the tweets with bag of words as a feature set. The key factors contributing to the quality of clusters and performance of clustering are dimensionality reduction

Simulation and study of joint clearances has usually focused on appropriate simulation strategies and their validation against experiments. The effect of joint clearances on the output of a mechanism has been usually evaluated qualitatively. The relative importance of different joints in a mechanism in producing deviation from the output of an ideal mechanism has not been studied. This work identifies

Cerium-doped Zinc Oxide nanoparticles were prepared with co-precipitation method. X-Ray diffraction (XRD) analysis shows sharp peaks conforming the crystalline nature of prepared particles. Crystallite size was found from XRD peaks. A Field Emission Scanning Electron Microscope (FESEM) was used to see the particles and hexagonal shape. Spectroscopic properties were studied using a Fourier Transform-Infra

Ni-Mo low alloy steel exhibits an admirable amalgamation of high strength and toughness at subzero temperature and show resistance to brittle fracture with good weldability. This steel has been established to fulfill the needs of specific applications, such as the construction of ships and submarines. To develop a companionable wire for welding of Ni-Mo low alloy steel, the amount of the alloying elements

This research paper depicts the process of used liquid nitrogen at the interface of TiN coated carbide cutting tool insert (rake face) and AISI D3 workpiece. Design of experiments (DoE) was planned according to Taguchi L9 (OA) orthogonal array. The experimental results during machining such as cutting force, machining time and temperature were optimized by Taguchi S/N ratio and analysed by ANOVA. The

Sentiment classification plays a dominant role in day-to-day life including the political events, production areas, and commercial activities. The need for the accurate and instant classification of the user emotions is a hectic task to be solved. The traditional methods fail to address the classification of dynamic data and huge volumes of documents. Moreover, to assure the classification accuracy

The increasing trend of population and its one of the requirements, on road vehicles are increasing. In addition, rural to urban development and subsequent deforestation leads to ozone depletion, climate change, loss of biodiversity and finally global warming encourages to research to give the substitute for IC Engine vehicles by developing electric vehicles. Present 20–35% of world economy is driven

This paper addresses a new location-allocation-pricing problem in designing a three-level uncertain supply chain network with stochastic price-sensitive demands. Using the market segmentation problems, a supply-chain network is developed with two distribution channels that consist of Brick & Mortar and online markets, when some demand leakages occur from the market with a higher price. Due to the lack

This paper presents the digital implementation of a current controlled grid connected inverter for Thermoelectric Generator (TEG) sources. Considering the electrical characteristics of a TEG source, several important aspects that a designer has to consider in selecting the rating of power converters for the grid connected operation of TEG source are discussed. The closed loop control of a TEG fed grid

In this paper, a new design of low power, high performance Radix-4 MBW multiplier unit has been described. The low power performance has been achieved by dynamic voltage scaling. Based on CCGDI technique which reduces the switching activity and output capacitance, the proposed multiplier unit has been designed by utilizing three different low power methodologies i.e., reduction in output capacitance

This study developed a mechanism with two sliders for a planer machine, in order to enhance productivity. First, the effects of the clearance size and seven imperfect revolute joints on the dynamic characteristics of the proposed mechanism were analyzed by finite element analysis in ANSYS software. In order to improve the dynamic behavior, an optimal design was carried out via the Taguchi method with

In this study, a theoretical model of one dimensional fracture grouting in soil is proposed based on fluid mechanics and force analysis during grout fracturing process. Solutions for grout pressure, and the length and width of the fracture are obtained, and the influence of the yield strength on the fracturing behavior is analyzed. Results show that, the grouting distance decreases and the fracture

This paper describes the design of a miniature air suction system to house a chemical sensor. It has been designed to improve the aerodynamic chemical sensing efficiency and to have a low weight since it is meant to be mounted on a micro air vehicle. The design is done around a readily available miniature axial flow fan by computational methods. A converging-diverging shape for the air suction system

This research describes an adaptation-based control strategy to deal with the pulse-width pulse-frequency modulator. The subject behind the research is to control the above-referenced modulators the hard limiter block via closed-loop describing function representation. In a word, this modulator has a set of parameters, which are all in need of adjusting, accurately, in order to guarantee its high performance

Cancer is the second leading cause of death after heart disease in the world and the third leading cause of death after heart disease and accidents in Iran. In general, cancer is a disorder of the rate of proliferation and cell differentiation that can occur in any tissue of the body and at any age and by invading healthy tissues may exacerbate the disease and eventually cause death. In a word, one

The use of rubber in concrete has been practiced in the engineering community for several years. However, the poor mechanical properties of rubberized concrete are a serious hurdle. This innovative research provides a closer look at improving the flexural strength of rubberized concrete beams with high rubber content using confinement technique. FRP jackets with different confinement thickness were

A multirobot system has cooperative team of robots designed to enhance efficiency of its operations. One of the critically investigated problems of multirobot system is the multirobot task allocation (MRTA) issue. The main objective of MRTA is to assign tasks to the most suitable robot based on its functions and capability as well as availability. In this paper, a task-oriented, auction-based task

In this paper, a novel 15 level symmetric switched capacitor multilevel inverter (SCMLI) structure is proposed first. The structure is developed by using 3 non-isolated DC power sources. The capacitors utilized in the structure can be charged to the summation of all the power supplies by turning ON the minimum number of switching devices. After that a generalized structure of the proposed SCMLI is

This work illustrates the design of a standalone solar power system used to power a milk chiller with 200 W DC compressors using the PVsyst software for different climatic zones in India. The design includes determination of minimum number of PV panels and batteries and also the means of obtaining annual solar fraction values for five different climatic zones of India using the software. Simulations

The paper proposes a class-AB flipped voltage follower (FVF) cell, in which the bulk-driven transistor is used as an input transistor with a replica-biased scheme to eliminate the DC level shift while a cascoding transistor is used to reduce the output resistance. The proposed FVF cell has several advantages such as low output resistance, approximately unity voltage gain, high symmetrical slew rate

The convective transport around two rotating circular cylinders kept in a tandem configuration to an unconfined flow of an incompressible fluid (Prandtl number, Pr = 0.717) is investigated through two-dimensional numerical simulation. The flow Reynolds number is considered constant at Re = 100. Four different gap spacings between the tandem cylinders such as 0.2, 0.7, 1.5 and 3.0 are chosen for simulation

The network traffic in the intrusion detection system (IDS) has unpredictable behaviour due to the high computational power. The complexity of the system increases; thus, it is required to investigate the enormous number of features. However, the features that are inappropriate and (or) have some noisy data severely affect the performance of the IDSs. In this study, we have performed feature selection

To meet the demand for low-voltage/low-power and high speed analog-to-digital convertors, a new fully differential double-tail dynamic comparator is proposed. To reduce the power dissipation and speed up the comparison process, charge sharing technique has been used in the latch stage of the proposed dynamic comparator. In addition, differential pair and double-tail dynamic comparator topologies are

In a cloud computing environment, the Distributed Denial of Service (DDoS) attack is considered as the crucial issue that needs to be addressed in ensuring the availability of resources that emerge due to the compromisation of hosts. The process of detecting and preventing DDoS attacks is determined to be predominant when the potential benefits of decoupling data plane from the control plane are facilitated

The inverted pendulum system in the presence of uncertainties and external disturbances with delay is considered as one of the most applicable nonlinear systems to be used in real environments and industrial domains, extensively. The subject behind the research is to design a state-of-the-art fractional-order sliding mode control approach to stabilize the inverted pendulum angle. Subsequently, a consideration

This paper reports the test results on the bonding strength between magnesium ammonium phosphate cement and Portland cement. The bonded specimens were prepared by immersion in Na2SO4 solution. Following immersion, the surfaces and positions of fractures on the specimens were examined. SEM and an optical microscope were used to analyse changes of the interfacial microzone following different immersion

Abrasive water jet machining (AWJM) is an advanced non-traditional material removal process which can machine almost all types of thin hard-to-cut materials. The quality of its machining operation can be effectively enhanced while selecting the appropriate settings of its different input parameters through the application of optimization techniques. This paper aims in obtaining the optimal combination

Recently, Additive Manufacturing (AM) has been widely used in many applications. For a particular AM component, the choice of available AM processes is critical to the component’s quality, mechanical properties, and other important factors. In that context, this article presents an efficient decision support system for the selection of an appropriate AM process. A novel hybrid Multi-Criteria Decision

Information Centric Network (ICN) is a promising next-generation internet architecture in which the network focuses on retrieving the content by employing open in-network caching scheme to provide an efficient content distribution to users. However, such open in-network caching is vulnerable to network anomalies. In particular, cache pollution attack disrupts the smooth working of in-network caching

Underground coal mines are considered as one of the most dangerous workspaces as many hazardous factors regularly cause accidents. It may be avoided by real-time monitoring of environmental parameters (gas, temperature, the width of walls, etc.) of underground tunnels. Nowadays, wireless sensor network (WSN) is widely used for safety monitoring of coal mines. However, any kind of interception, modification

This work proposes a novel robust controller in Linear Matrix Inequality framework for a single-machine infinite bus system. The mathematical equations defining the system are highly nonlinear. The novelty of the paper is the linear control law, which is obtained without linearizing the system. Along with the nonlinearity here, another two contingencies are also taken into account—(i) uncertainties

A printed ultra-wideband antenna of compact size (0.36 λL × 0.31 λL) that delivers bandwidth (S11 ≤ −10 dB) of 2.64–9.36 GHz (112%), with triple notches at 3.28–3.84, 5.08–5.44 and 5.62–6.06 GHz to reject contemporaneous wireless interventions such as WiMAX and WLAN is reported in this article. The proposed antenna performance is established by both simulation and experimental measurement. The antenna

In a deregulated environment, optimal transmission switching (OTS) plays an important role in coordination among power generating companies (GENCOs) and transmission company (TRANSCO) by minimizing operating costs. This paper solves ac OTS (ACOTS) in two different stages sequentially with ac optimal power flow (ACOPF) and transmission switching through ac power flows (TS-ACPF) for optimal power generation

In this research, by utilizing the concept of the mixed Caputo fractional derivative and left-sided mixed Riemann–Liouville fractional integral, we approximate the solution of generalized fractional Benjamin–Bona–Mahony–Burgers equations (GF-BBMBEs). In addition, using Genocchi polynomial properties, we obtain a new formula to approximate the functions by Genocchi polynomials. In the process of computation

Renewable energy-based on virtual power plants (VPPs) has recently attracted considerable attention for participating in energy and reserve markets due to the disadvantages of thermal power plants (TPPs). The present paper aims to maximize the VPP profitability in distribution networks including thermal power plants, at minimum load cost, using a mathematical model for implementing the VPP and evaluating

The experiments were performed for various conditions at 40–60 °C air temperature, 0.5–1.5 m/s air velocity, 120–600 W microwave and 50–200 W ultrasonic power so as to investigate the effects of drying air temperature, air velocity, microwave and ultrasonic power on the drying characteristics of apple slices. In the study, the combined use of hot air, microwave and ultrasonic energy for apple slices

These days, algorithms which enable correction of an image aberration such us barrel or pillow distortion can be found in a large number of scientific papers. Some sorts of algorithms have universal character, others can be used only with a certain type of optical systems. This paper compares several types of methods which were designed to remove an image distortion. The methods which are based on

The characteristics of the trapezoidal weir flow are measured using a one-dimensional laser Doppler anemometer for two different flow conditions. The governing equations of the flow are solved using Standard k–ε, Realizable k–ε, Modified k–ω and Reynolds Stress Model based on the Reynolds-Averaged Navier–Stokes Equations and by Large Eddy and Detached Eddy Simulations. ANSYS-Fluent package program

Optical fiber line, considered to be highly effective for signal transmission, sometimes suffer from fiber cut resulting in signal loss. It is highly desired that the exact cut location is found by use of fiber length so that entire fiber cable need not be replaced. An optoelectronic instrument OTDR (Optical Time-Domain Reflectometer) is used to find the position of the cut along the fiber length.

Construction of residential and commercial buildings on the slope face is very commonly noted in the North-eastern and other mountainous terrains of India. Closely spaced buildings and the foundation elements located on such slope faces interact with each other, thereby influencing the stability of the slopes, which, in turn, affects the failure mechanism and bearing capacity estimation of such foundation

Precluding death percentage from road accidents has always been challenging task for technologists and scientists of this earth. As per the recent reports of world health organization approximately 1.5 million people including children and women are getting sudden and sad demise from road accidents. Approximately 25% of these deaths are because of non-availability of in-time medical aid and the existing

Placing the bridge piers in the river with a convergent bend can make the flow and erosion pattern complicated around the bridge piers. In this research, the maximum depth and volume of scour hole around piers were investigated in convergent bends of a river. The experimental model with a 90° convergent bend was made with a central curvature radius of 170 cm. The piers with the cylindrical and cubic

The main aim of this study was to investigate the effect of 1%, 3% and 5% content of ethanolamine (EA) and nano-TiO2 (NT) on the corrosion resistance properties of ferrocement composites exposed under tap water, saline water and sulphuric acidic solution environments. The corrosion behaviour composites were assessed through potentiodynamic polarization technique. Besides, the effect of EA and NT on

In this paper, the most significant contribution has been a change in the focus of research on exchange rate volatility from a traditional emphasis on events in India to a more comparative approach that examines the experiences of many countries simultaneously. The focus is on using Generalized Auto Regressive Conditional Heteroskedasticity (GARCH) to understand the behavior of British Pound, United

In ultrasonic machining (USM), higher amplitude is required for higher material removal rate (MRR). The objective of this research is to develop a new horn design for high displacement amplitude for getting maximum MRR within a working condition. The profile of the horn has been optimized and designed. In this analysis, optimization procedure and finite-element method have been used for the design

In the present work, a tin oxide (SnO2)-based gas sensor has been fabricated on Low Temperature Co-fired Ceramic (LTCC) substrate by screen printing method for detection of the silent killer gas (carbon monoxide). The tin oxide paste has been prepared for deposition on inter-digitated electrodes patterned on LTCC substrate. The developed gas sensor module has been fired at different temperatures (625

An observer based analysis is carried out to improve the dynamic responses of the super lift Luo converter with positive output voltage along with a digital controller. The dynamics of the closed-loop system is investigated using discrete time modeling technique which includes the dynamic compensation in the form of prediction observer controller for obtaining output voltage regulation. The implementation

This paper proposes a high-throughput median finding architecture where the sorting of an incoming pixel is executed by a high-speed Compare and Select (CS) module. In this work, four clock pulses are required to populate the \(4\times 4\) window as four pixels are read at a time from the incoming grey image. This median finding process is carried out by parallel and pipeline median a rchitecture.