The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The proper identification of the traffic signs can ensure driving safety and can play a very important role in reducing the number of road accidents significantly. This paper represents a uniform way to detect the speed limit traffic signs and to confirm it by recognizing the sign's speed number. In this system, firstly the red color objects are segmented from an image using LVQ. Secondly, detected...
This paper aims at designing a high voltage-gain step-up converter based on charge pump concept. Without any circuitry design complexity, this novel step up converter can generate almost threefold output voltage relative to its input through charging two charge pump capacitors. In order to verify the effectiveness of the proposed converter, simulations are carried out where the efficiency curve shows...
In this paper, the return from the investment of Clinical Engineering & Professional Technologist (CEPT) is introduced. Here, the authors differentiate a hospital health care system with CEPT and without CEPT. Without investment anything could not be achieved. In this field Bangladesh government invested an inferior amount as a result the return from the investment is not reflected. Here, author...
Brain region segmentation in neonatal magnetic resonance (MR) images is an essential task for computer-aided diagnosis of neonatal brain disorders using MR images. We have proposed a neonatal brain segmentation method using a fuzzy object model (FOM), which represents a prior knowledge of brain shape and location. The FOM is constructed from multiple neonatal brain MR images whose revised age was...
Due to massive increase in prices of fossil fuels as well as alarming rate of environmental pollution, researchers and scientists are paying good number of attentions towards sustainable energy and technology. Among various sources of renewable energy, fuel cell technology is becoming quite popular now a days. A comprehensive analysis of fuel cell generation and stability enhancement has been presented...
Optical-Wireless technology recently has emphasized the cellular network over ground and underwater communication. Passive optical network (PON) is the faster data operating platform and gets inter-linked with the wireless function to enhance its performance. Various PON systems setup is perfect to reduce the channel noise, interference, chromatic (CD), and polarization mode dispersion (PMD). This...
Ultra wideband (UWB) radio technology is becoming very popular for certain short range applications including indoor communications systems, home networks, cordless phones, high speed local area networks, and security sensors in wireless communications. Due to reducing link lengths and higher data rate, the UWB systems need sophisticated propagation models and more precise characterization of the...
Chaotic maps improve the security level of watermarking scheme due to its complex characteristics. The security is required to prevent unauthorized modifications. In this paper, a highly security based watermarking scheme for image authentication has been proposed. The two dimensional Arnold's cat map, logistic map and 2D Game of Life cellular automata provide the security scheme. Arnold cat map has...
In this work, an attempt is made to simulate the skin temperature profile of breasts in the presence of Cysts. For the first time a study comparing the temperature profiles of normal breasts with Breast Cysts is undertaken. Heat transfer mechanism is modelled as the Penne's Bio-heat equation on 2D breast sections. The equation is solved using the Finite Element Method. The Cysts are simulated for...
Experimental results of on-body radio propagation channels at 2.45 GHz and off-body radio propagation channels at 1.9 GHz using a dual band Planar Inverted F Antenna (PIFA) are presented in this paper. Measurement campaigns are performed in the chamber and in an indoor environment. A frequency-domain measurement set-up was applied for both on-body and off-body radio propagation channel cases. The...
Image spatial resolution enhancement using the wavelet transform is a quite classic topic in the field of image processing and there exist many algorithms, techniques and methods regarding wavelet and image resolution. Most of these approaches are based on the idea that the low resolution image is the approximation subband of a higher resolution image and try to estimate the unknown detail coefficients...
For the measurement of e-Government performance indicators, the national web portal (NWP) of a country plays a significant role. Bangladesh government took many steps for e-Government initiatives on ground and online which are not properly documented in the online version. The NWP of Bangladesh is not adequately enriched with e-Information and e-Services which may redirect a visitor to many ministerial,...
The paper presents performance analysis of an analog front end (AFE) for body-coupled communication (BCC) which is based on data transmission via capacitive coupling through the human body. The AFE designs by cascading differential preamplifier and Schmitt trigger. A flipped voltage follower (FVF) topology is used as part of the preamplifier design. The operation frequency of the overall system is...
This paper presents a new automatic method to extract the retinal blood vessel under various normal or abnormal conditions. Extraction of blood vessels in retina is helpful for ophthalmologists to screen larger populations. The commonly used Gabor filter methods often produce false positive detections of blood vessels. We proposed a method for segmentation of blood vessels using Optimized Gabor filter...
A submarine is a clandestine platform of watercraft for independent operation beneath water. In order to surpass under water she must obey some ground laws specially Archimedes principle with taking consideration of its flexible and economic structure and propulsion systems design. The main purpose of this research is to design and fabricate a prototype submarine to make experimentally available....
Wireless power transmission (WPT) has been attracting a wide range of subjects in various fields and also become a highly active research area because of their potential in providing high technology to our daily lives. The wireless power transmission will be mandatory to use in the near future because this technology enables the transmission of electrical energy from a power source to an electrical...
This paper proposes a dual-band microstrip patch antenna to operate at both WLAN Bluetooth band (2.2 GHz to 2.83 GHz) and ultra-wide-band (4.7 GHz to 12.69 GHz). The proposed antenna is a modified version of an UWB microstrip antenna. The antenna's radiation pattern is almost quasi/partial omni-directional and its highest gain level is reached to 5.23 dB. This antenna can be used for wireless body...
Much of the research work on sentiment analysis has been carried out in the English language, but work in Bangla is limited to only news corpus and blogs. Microblogging sites are becoming a valuable source for publishing huge volumes of user-generated information, as users express their views, opinions, and sentiments over various topics. In this paper, we aim to automatically extract the sentiments...
In this work, a two dimensional (2-D) analytical model and simulation of dual material gate (DMG) Al0.7Ga0.3Sb/InAs High Electron Mobility Transistor (HEMT) has been presented. Superiority of DMG over single material gate (SMG) structure for this kind of HEMTs has been highlighted. Simulation results show the suppression of short channel effects (SCEs) and improvement of carrier transport efficiency...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.