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295 articles for “PROPAGATION”
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Performance Analysis of Wireless Propagation Model to Improve Signal Strength and BER for Wireless Mobile Network
Abstract: AbstractWhenever we setup a network, environment properties such as fading, scattering etc. plays a very important role in choosing spectrum and method of propagation. The spectrum deals with frequency range suitable for communication in a particular environment, and the propagation method deal with channel selection, channel sensing and to perform quality communication throughout the network. To achieve quality output from the network, it is necessary to define network under different …
Published in Journal of Communication Engineering & Systems · Vol. 5, Issue 2, 2015 · pp. 1–7 Read article
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Monitoring the Structural Health of RC Beam Lap Splices using Wave Propagation and PZT Sensors
Abstract: This paper describes the use of piezoelectric sensors in a wave propagation-based Structural Health Monitoring (SHM) method to identify lap splices in steel reinforcing bars. Straight and lapped steel bars with lap lengths of 10° and 20° were used for the experiments. Lead Zirconate Titanate (PZT) transducers were employed, one of which served as an actuator to produce stress waves and the other as a sensor to record the signals …
Published in Journal of Experimental & Applied Mechanics · Vol. 17, Issue 2, 2026 · pp. 65–70 Read article
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Laminar Propagation of Lean-Premixed Flames in Meso-scale Tubes
Abstract: A meso-scale channel was earlier developed [1] for the propagation of laminar lean premixed flames. This paper, therefore, reports the experimental variations of flame speed with inner meso-scale tube diameters (di), equivalence ratio (φ), and mixture flow rate (Q) with methane and propane fuels using the meso-scale channel developed earlier. Based on the flame front history, flame speed (SL) and propagation speed (Ud) were computed at temperature (T) greater than …
Published in Journal of Thermal Engineering and Applications · Vol. 1, Issue 2, 2014 · pp. 17–28 Read article
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In Vitro Propagation of Cassia alata L and Its Secondary Metabolites
Abstract: Cassia alata (L.) is traditionally used to treat various fungal infections, traditionally used as a remedy for poisonous bites. The objectives of the present study were to conservation of Cassia alata through the plant tissue culture and comparative of its secondary metabolite with field cultivated plant as well as in vitro. In micropropagation, multiple shoots were induced by the nodal region of the plant on Murashige and Skoog medium containing …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 8, Issue 3, 2018 · pp. 82–90 Read article
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Study about Important on why the Phenomenon of Light Propagation in Microstructure on Anisotropy is Important
Abstract: Here we want to explain the phenomenon of light propagation in a subtle structure the information of which is shown here. So here we investigated the phenomenon dependence of light diffusion in human dentin on microstructure. The main scatter tubes are found in the dentin, which can be estimated to be shaped like long cylinders. So here we calculated the scattering of electromagnetic waves through an infinitely long cylinder and …
Published in Research & Reviews : Journal of Physics · Vol. 10, Issue 4, 2021 · pp. 15–21 Read article
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Audio-Only Speaker Identification using Principal Component Analysis based Back-Propagation Learning Neural Network in Noisy Environment
Abstract: This paper introduces text dependent speaker identification system on Principal Component Analysis based Back-Propagation learning neural network which deals with detecting a particular speaker from a known populations under noisy environment. For audio pre-processing, ends point detection, silence parts removal, frame segmentation and windowing techniques have been used and wiener filter has been applied to remove the background noise from the audio speech utterances. To reduce the dimension of the …
Published in Current Trends in Signal Processing · Vol. 3, Issue 3, 2013 · pp. 1–10 Read article
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Iris Recognition System Using Principal Component Analysis based Back-Propagation Learning Neural Networks
Abstract: This paper deals with the iris recognition system using Back-Propagation learning neural network algorithm where Principal Component Analysis technique has been used to reduce the dimension of the iris feature vector. Automated iris localization and segmentation methods have applied to effectively isolate the iris region from pupil and sclera. Circular Hogue transform has used to detect the iris/sclera boundary and pupil/iris boundary. To remove the upper and lower eyelids effects …
Published in Current Trends in Information Technology · Vol. 3, Issue 3, 2013 · pp. 5–11 Read article
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Crack Propagation Analysis in Metallic Alloys: A Comparative Study of Traditional and Advanced Materials
Abstract: A vital component of materials science and engineering, crack propagation analysis is essential to determining the structural integrity and dependability of materials. Designing safe and long-lasting structures for a variety of sectors required an understanding of how cracks begin, spread, and interact with a material's microstructure. To guarantee the performance, safety, and dependability of materials in a variety of applications, crack propagation analysis is essential. It offers insightful information about …
Published in International Journal of Fracture Mechanics and Damage Science · Vol. 1, Issue 1, 2023 · pp. 33–41 Read article
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Performance Comparison between Back-Propagation Learning and Kohonen Self-Organizing Neural Networks Algorithm in Terms of Pattern Recognition
Abstract: Pattern recognition using back-propagation learning and Kohonen self-organizing neural network algorithms has been developed and measured various performance based on different criteria and environment of the pattern. These pattern recognition systems have taken the object image as input. In image pre-processing stage, scaling and clipping process has been applied from the background image to avoid unnecessary portion of the object image. Feature extraction has been performed after applying filtering and …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 1, Issue 1, 2014 · pp. 1–8 Read article
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INVESTIGATION OF THE ELECTRICAL PROPERTIES OF A FOREST AND ITS IMPACT ON RADIO WAVE PROPAGATIONS
Abstract: There are two important parameters that represent the forest electrical properties. They are permittivity, Ԑr and conductivity, δ of the forest. These parameters were observed to affect the radio wave propagation in forest. The study of radio wave propagation in forested environment becomes necessary since radio communication is propagated by electromagnetic wave (EMW) travelling through different environments, The main objective of this research was to investigate a simulated model for …
Published in Research & Reviews : Journal of Physics · Vol. 13, Issue 2, 2024 · pp. 18–25 Read article
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A Critical Review of Hydraulic Fracture Propagation in Shale Gas Reservoirs
Abstract: The successful exploration and development of unconventional shale gas reservoirs was possible with advances in hydraulic fracturing and horizontal drilling. Hydraulic fracture treatments open these natural fractures and create a fracture network in gas shales. However, the fracture propagation is not fully understood as of now. A critical review of hydraulic fracture propagation in shale gas formations is presented in this paper. Effects of pertinent factors on hydraulic fracture propagation …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 3, 2013 · pp. 1–17 Read article
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Faulty Object Detection by Image Processing Based on Modified Back-Propagation Algorithm of Artificial Neural Network
Abstract: The conventional algorithms such as canny edge detection require so much computation which makes it more time consuming. Hence it is not used for industrial applications such as damage detection because each product should be analyzed in a fraction of seconds so that the manufacturing rate of the industry should not be affected. Hence Artificial Neural Network can be used for edge detection. Though it requires a lot of time …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 3, Issue 2, 2016 · pp. 19–25 Read article
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Fractural Mechanics Crack Propagational Study on Different Material And Different Crack Location of weld joint in ANSYS
Abstract: AbstractThere have been spectacular failures made of ductile material. The structure as whole will remain as brittle only until the load is applied it will have elastic response it will not have plastic response. But near the crack tip there will have plastic zone and plastic zone indicates flow crack is going to behave for the present study analysis is carried out on crack near weld joint and three different …
Published in Journal of Structural Engineering and Management · Vol. 5, Issue 3, 2018 · pp. 29–33 Read article
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Enhancing Data Security Via the Application of Back- Propagation Feed-Forward Methods in Encryption
Abstract: The computer society uses a variety of automated methods for file security and data storage. Several organisations are concerned about the information exchange via an unsecured network for a distributed architecture, such as the time-sharing and real-time system. Probably the most crucial element that contributes to effective security is cryptography. Using a constant weighted factor for boosting the factor, the study aims at extending or updating the earlier presented Artificial …
Published in Journal of Open Source Developments · Vol. 9, Issue 3, 2022 · pp. 13–17 Read article
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Decision Fusion based Pair of Iris Recognition using Back-Propagation Learning Neural Network Algorithm
Abstract: AbstractThe contribution of this work is to enhance the performance of the iris recognition system through decision fusion of left and right iris pattern. Iris recognition system performs well and identify human correctly in neutral environment. In this paper a pair of iris recognition system has been proposed, which is capable enough to identify human through noisy environments. Principal component analysis based dimensionality reduction technique has been used toreduce and …
Published in Journal of Computer Technology & Applications · Vol. 6, Issue 2, 2015 · pp. 1–6 Read article
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Sterilization Protocol Optimization for Geranium (Pelargonium graveolens L.) in vitro Propagation from Nodal Culture
Abstract: AbstractThe present study was initiated to optimize sterilization protocol for in vitro propagation protocol from nodal culture of geranium. Three (treatment 1, 2 and 3) surface sterilization treatments were tested. According to the results of the sterilization test, the percentage of contaminated magenta in treatment 1 and 2 was 65.71 and 60%, respectively, which was highly reduced to 11.42% when Kocide 101 was applied before treating explants with Ethanol and …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 4, Issue 1, 2015 · pp. 34–38 Read article
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Asymmetrical Light Propagation in 2D Photonic Crystal Structure
Abstract: In this work, using Plane Wave Expansion (PWE) and two-dimensional Finite Difference Time Domain (2D-FDTD) methods, we design a structure that shows the high asymmetry in propagation of light. Structure is based on two-dimensional Photonic Crystal (2D-PC) consisting of square lattice (39 X 39) of infinitely long circular rods of refractive index 2.9 in the background of refractive index 1. Radius of rods is 0.15a, where a is the lattice …
Published in Journal of Polymer & Composites · Vol. 11, Issue 7, 2023 · pp. 69–74 Read article
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Experimental Setup to Determine Stress Wave Propagation in a Compound Bar
Abstract: Deformation undergone by a body due to impact results in development of dynamic stresses. This deformation depends on the material properties and geometry. Advancements made in stress wave propagation are focused at the necessity to understand dynamic history of structures subjected to applied loads. Stress travels with different velocities in different bodies depending upon material characteristics, crystal structure etc. Forces applied on bodies at short intervals of time result in …
Published in Journal of Materials & Metallurgical Engineering · Vol. 8, Issue 2, 2018 · pp. 1–6 Read article
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Face Detection and Recognition System Using Back- Propagation Neural Network Classifier
Abstract: Abstract Today Security is an important part of our everyday lives. Biometric technologies are used for providing and increasing the security of the organizations. Human face recognition is a potential method of biometric authentication. This paper represents a process of face detection and recognition system using principal component analysis with back-propagation neural network. For recognizing the faces there are several steps required. Principal component analysis is used for feature extraction …
Published in Journal of Artificial Intelligence Research & Advances · Vol. 1, Issue 2, 2014 · pp. 19–24 Read article
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A Rapid in vitro Propagation of Bambusa balcooa by Plant Tissue Culture Technique
Abstract: Bambusa balcooa is a common plant grown in Bihar, Orissa, Jharkhand and Uttarakhand states of India having good cultural importance. The present experimentation on nodal explants of B. balcooa on MS media supplement under particular culture conditions have shown shunted growth in 30 days. Shoot tip explants of B. balcooa seedlings produced multiple shoots on MS medium supplemented with different plant growth regulators (PGRs) individually and in combination. Shoot tip …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 8, Issue 1, 2018 · pp. 27–31 Read article