Search
934 articles for “bands”
-
Enhancing the Still Image Using Super Resolution Techniques: A Review
Abstract: Super Resolution (SR) refers to the reconstruction of images that are visually superior to the original low resolution (LR) images by bandwidth extrapolation beyond the pass band of the imaging system. Tsai and Hunag were the first to consider the problem of SR in 1984. Onwards over three decade various researchers contributed in the field of SR but all are intuitive SR mechanisms. This paper reviews the recent SR techniques. …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 2, Issue 2, 2015 · pp. 35–51 Read article
-
A Survey of Online Learning Algorithm
Abstract: Online learning is an active research area, which emerges in the last decade and has been considered as a subset of machine learning. Although, there is limited advancements has been made due to its high processing environment ultimately delaying its real-time applicability. In this study, we studied the various techniques with which the online learning algorithms have been able to successfully embark the results over the World Wide Web. It …
Published in Recent Trends in Parallel Computing · Vol. 2, Issue 1, 2015 · pp. 6–9 Read article
-
A Parallel Online Learning Algorithm for Anisotropic Digital Image Restoration
Abstract: Previously, in the computational scenarios where the training data has already been made available for the learning algorithm, the kernel based algorithm such as support vector machines have made significant advances in the machine learning field. Though there has been little advancement made in learning scenario at online settings to facilitate the various real-time applications at the user end. In this study we discussed the issues with the online learning …
Published in Recent Trends in Parallel Computing · Vol. 2, Issue 1, 2015 · pp. 21–26 Read article
-
Quality of Services (QoS) in Linux Operating System
Abstract: Quality of Service (QoS) is a fundamental characteristic of contemporary computer networks, enabling the prioritization of network traffic and the allocation of network resources according to specific criteria. The Linux operating system provides a powerful set of QoS tools, including Traffic Control, Differentiated Services, and Network Emulator. These utilities enable you to establish traffic categories, impose bandwidth constraints, and give precedence to traffic according to diverse criteria such as IP …
Published in Journal of Operating Systems Development & Trends · Vol. 10, Issue 2, 2023 · pp. 1–5 Read article
-
A Review of Textile Materials for Wearable Antenna
Abstract: Now a day’s importance of wearable textiles in the antenna segment has been increased due to the recent miniaturization of wireless devices. A wearable antenna is stands as a part of the clothing used for communication purposes, which includes tracking and navigation, mobile computing, public safety and wireless communication. By using Wireless Body Sensor Networks for healthcare and pervasive applications, the design of wearable antennas offers the possibility of ubiquitous …
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 3, 2014 · pp. 7–14 Read article
-
Triangular Slotted Microstrip Patch Antenna for Wireless Application
Abstract: Abstract In this article, a dumbbell shape microstrip patch antenna has presented mainly used for WLAN wireless applications. The simulated result shows that dual bandwidth of 49.07 and 9.47% are obtained covering the frequency range from 1.63 to 2.69 GHz and 3.42 to 3.76 GHz. The characteristics of the designed structure are investigated by using MoM based on IE3d. In the end, an extensive analysis of the return loss, radiation …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 3, 2016 · pp. 8–12 Read article
-
Millimeter Wave Modulation for 5G Communication
Abstract: The universal bandwidth shortage for providing high data rate in gigabit per second has motivated the study of Underutilized millimeter wave band. It provides frequency spectrum for future fifth generation mobile communication networks. Propagation of millimeter wave in environment is affected by atmospheric conditions like rain, fog, cloud etc. and it is mostly affected due to presence of rain and rate of rainfall. Our objective is to develop modulation technique …
Published in Recent Trends in Electronics Communication Systems · Vol. 2, Issue 2, 2015 · pp. 31–36 Read article
-
Implementation of Flexible Wearable Antenna
Abstract: This paper is to analyze a light weighted flexible antenna for modern communication system. The proposed antenna is compact in size, shows high directivity and large bandwidth. Polystyrene foam is used as a substrate because such antenna is bendable, wearable, cheap, requires less attention and has good features like low dielectric constant, low loss tangent and better efficiency. The parameters of antenna such as return loss, gain, bandwidth, radiation pattern …
Published in Recent Trends in Electronics Communication Systems · Vol. 4, Issue 2, 2017 · pp. 6–10 Read article
-
Fuzzy Based Opportunistic Power Control Strategy for Cognitive Radio with Compressive Sensing
Abstract: Cognitive radio is an intelligent communication technology that allows secondary users to utilize licensed band opportunistically and helps in resolving the issue of spectrum scarcity. In spectrum sharing network, where the secondary user can communicate simultaneously along with primary user in the same frequency band, the main challenge to opportunistic radio spectrum access lies in finding balance between two conflicting goalsof satisfying performance requirements while minimizing interference. In this paper,the …
Published in Recent Trends in Sensor Research & Technology · Vol. 2, Issue 3, 2015 · pp. 14–22 Read article
-
Design of “Hexagonal Rings’’ Shaped Cover Metamaterial for WLAN Applications Enhancement of Microstrip Patch Antenna Parameters at 2.31 GHz
Abstract: A rectangular microstrip patch antenna (RMPA) along with metamaterial which has design of hexagonal rings-shaped cover structure is proposed at a height of 3.2 mm from the ground plane. The RMPA with proposed metamaterial structure is designed to resonate at 2.31 GHz frequency. This work is mainly focused on increasing the potential parameters of microstrip patch antenna. The proposed metamaterial structure significantly reduces the return loss and increases the bandwidth …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 1, Issue 1, 2014 · pp. 32–36 Read article
-
Multi Resonant Microstrip Antenna with Partial Ground for Radar Application
Abstract: In this paper, a novel structure of microstrip antenna using partial ground technique and suitable for Radar application has presented. The substrate of the proposed antenna was made of glass epoxy substrate, while radiating element and ground plane are made out of copper. The proposed novel design has high gain, directivity, good return loss and multi bands. Improvement in the design is done by increasing the electrical length and area …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 2, 2015 · pp. 1–6 Read article
-
Rectangular Slot Loaded Circular Patch Antenna for WLAN Application
Abstract: In this paper design and analysis of Circular Microstrip antenna with two rectangular slots having inset-feed has been presented. A computer simulation using IE3D software was performed and the bandwidth of the antenna has been measured. The proposed antenna has been fabricated & tested successfully with network analyzer. By using slotting technique inside the circular patch better impedance bandwidth is achieved. The proposed antenna is suitable for Wireless Local Area …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 2, 2015 · pp. 7–10 Read article
-
A Compact Pellet Drum Shape Microstrip Patch Antenna
Abstract: This paper consists of microstrip patch antenna designed with coaxial feed technique. The antenna is mainly anticipated to be used for UMTS wireless applications. The results illustrate that wide bandwidth of 33.26% is obtained covering the frequency range from 2.03 to 2.84 GHz. Next, the characteristics of the designed structure are investigated by using MoM based electromagnetic solver, IE3d. Finally, a broad analysis of the return loss, radiation pattern and …
Published in Journal of Microelectronics and Solid State Devices · Vol. 3, Issue 3, 2016 · pp. 10–14 Read article
-
Use of Liquefiable Materials for Vibration Isolation
Abstract: Abstract Trench barrier isolation is very popular but less adopted technique for the isolation of buildings and important structures. Here the structures are to be protected against the energetic surface waves, which are confined up to 3–4.5 m depth below the surface. Several types of trenches with different in-fill materials have been tried with some degree of success. The difficulty comes from the nature of the waves, which are a …
Published in Journal of Geotechnical Engineering · Vol. 3, Issue 3, 2016 · pp. 33–36 Read article
-
Pellet Drum Microstrip Patch Antenna for UMTS Application
Abstract: This paper consists of microstrip patch antenna designed with coaxial feed technique. The antenna is mainly anticipated to be used for UMTS wireless applications. The results illustrate that wide bandwidth of 33.26% is obtained covering the frequency range from 2.03 to 2.84 GHz. Next, the characteristics of the designed structure are investigated by using MoM based electromagnetic solver, IE3d. Finally, a broad analysis of the return loss, radiation pattern and …
Published in Journal of Semiconductor Devices and Circuits · Vol. 4, Issue 1, 2017 · pp. 24–28 Read article
-
Opto-electrical and Structural Properties of CuxO Thin Films grown by R. F. Sputtering Method
Abstract: CuxO (0<x<1) thin films were deposited on glass substrate by r. f. sputtering method at different r. f. power in an atmosphere of O2 and Ar. The conditions for deposition of CuxO thin film were optimized by varying the r. f. power for the deposition to vary the energy band gap of the deposited film. Structural characterizations were performed by XRD and TEM studies. The films deposited on glass substrate …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 2, Issue 1, 2011 · pp. 8–15 Read article
-
Synthesis, Characterization and Photocatalytic Activity of Bismuth Doped Titanium Dioxide under Different Light Sources
Abstract: 800x600 Photocatalysis is a recognized approach where light energy is employed to excite the semiconductor material and produce electron-hole pairs. These electron-hole pairs eventually involves in the detoxification of pollutants (in air or water) & water splitting. TiO2 photocatalyst shows poor activity in visible light due to its wide band gap (3.2 eV), which restricts its use under Sun light. In the present work, photocatalytic activity of TiO2 was enhanced …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 4, Issue 3, 2014 · pp. 23–31 Read article
-
A Study on the Synthesis and Characterization of Silver Metal Nano Particles with Acrylic Acid– Acrylamide (Aa) Copolymer as Mediating Agent
Abstract: Silver metal nano-particles (MNP) have been synthesized by chemical methods with acrylic acid- acryl amide (AA) copolymer as mediating agent. Formation and interaction of silver metal nano- particles with AA copolymer has been confirmed by ultraviolet–visible (UV-VIS), Fourier Transform Infrared (FTIR) techniques. Thermal and morphological properties of the composite have been studied by Differential Scanning Calorimetry (DSC) and Scanning Electron Microscope (SEM) techniques. Change in intensity together with shift of …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 6, Issue 3, 2016 · pp. 1–4 Read article
-
Influence of Dip Cycles on the Structural, Optical and Morphological Properties of CdS-SILAR Deposited Thin Films
Abstract: Cadmium sulphide (CdS) thin films were deposited on a glass substrate by a relatively simple and cost effective successive ionic layer adsorption and reaction (SILAR) method at temperature 80ºC at different deposition cycles. For a fine nanocrystalline thin film growth, the parameters include concentrations of cationic and ionic precursors, number of immersion cycles, and the immersion time. A study was made to know how dip cycles affects the structural, surface …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 6, Issue 3, 2016 · pp. 19–26 Read article
-
Differentiation of Hybrid (COTH2) and Wild (CO3) Varieties of Tomato (Lycopersicon esculentum) Using Protein and Peroxidase Isozyme Profile
Abstract: The protein profile by SDS-PAGE and the native PAGE profile of the isoenzyme peroxidase of a hybrid tomato plant (Lycopersicon esculentum) variety (COTH2) and wild-type plants (CO3) were compared in order to adopt them as markers to differentiate them. The hybrid plant, which were resistant to leaf curl disease, was found to have higher protein content compared to its wild variety in the leaf extracts of the plants. Presence of …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 1, Issue 2, 2011 · pp. 1–5 Read article