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215 articles for “Islam”
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Calf Mortality in the Tropics: Multidimensional Challenges and Implications for Sustainable Dairy Development
Abstract: Calf mortality remains a significant challenge in tropical dairy farming, posing threats to productivity and sustainability. This review explores the multifactorial factors contributing to calf mortality in the tropics, including environmental stress, infectious diseases, nutritional deficiencies, management practices, genetic factors, and social dynamics. Tropical climates, characterized by extreme temperature variations, humidity, and poor shelter, exacerbate stress and compromise calf health. Infectious diseases, such as bacterial, viral, and parasitic infections, coupled …
Published in Research and Reviews : Journal of Veterinary Science and Technology · Vol. 14, Issue 3, 2025 · pp. 7–23 Read article
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Localization Based Beamforming Approach to Audio Source Separation from Binaural Mixtures
Abstract: This paper presents an approach of localization on the basis of audio source separation from binaural mixtures with adaptive beamforming. A new source localization technique is proposed to spatially localize the sources with two degrees of freedom (azimuth and elevation). We used a head related transfer function to synthesize the binaural mixture that introduces the interaural differences to the source signals. The interaural cues are technically employed to estimate the …
Published in Current Trends in Signal Processing · Vol. 1, Issue 1-3, 2025 · pp. 1–10 Read article
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Principal Component Analysis Based Dominant Features Selection Method for Speaker Identification
Abstract: Cepstrum based features are mostly used in speaker identification. Mel-frequency cepstrum coefficients (MFCCs) and their statistical properties (skewness, kurtosis and standard deviation) are used in this paper for text-dependent speaker identification. Principal component analysis (PCA) is employed to select the dominant feature vector representing the speaker characteristics. Multi-layer neural network is used as the classification engine. There occurs the inter-speaker variation of speech length uttering the same word. The feature …
Published in Current Trends in Signal Processing · Vol. 1, Issue 1-3, 2025 · pp. 33–45 Read article
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Simulation of Nitric Acid Production
Abstract: Nitric acid has been known and esteemed for a long time. Most nitric acid is used in making ammonium nitrate. Its direct applications include photoengraving, metal pickling and passivation and the parting of gold and silver. Here the Oswald process is used to produce nitric acid. This process is simulated using HYSYS simulation software. The purpose of this simulation was to observe the thermodynamic properties of the process. We also …
Published in Emerging Trends in Chemical Engineering · Vol. 2, Issue 1, 2015 · pp. 43–48 Read article
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Estimation of Life Cycle Cost of RC Infrastructure Using Different Analysis Methods
Abstract: Accuracy of service life prediction largely influence life cycle cost of infrastructure. Recent research come up with the conclusion that ingression of chloride to cover concrete is dependent on the water penetration front which dramatically change the service life. Therefore, in this study chloride ion profiles and behavior of penetrating water for slag concrete with w/c ratio as 40%, 55% and 70%, respectively, cast in laboratory, were examined. Furthermore, life …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 2, 2015 · pp. 15–21 Read article
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Durability Design of Reinforced Concrete Beams Using Cost Minimization by Excel Solver
Abstract: Design procedures based on current specifications do not always ensure required service life, mostly because of the underestimated durability parameters. This is due to the fact that definition of durability is not operational as basis for design, maintenance and repair. This paper presents an Excel spreadsheet model for the cost optimization of simply supported beams designed according to the requirements of the American Concrete Institute (ACI) code and the Japan …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 3, 2015 · pp. 75–81 Read article
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Method of Analysis for Chloride Distribution in Concrete from Torrent Data
Abstract: Design w/c ratio becomes less important than achieved cover performance in the case of existing structure. Therefore, inspection data of chloride profile from some real structures do not always obey the rule of Fick’s law, suggesting the influence of a new parameter. In this study, chloride ion profiles and behavior of penetrating water for normal, fly ash and slag concrete with w/c ratio as 40, 55, and 70%, respectively, cast …
Published in Journal of Construction Engineering, Technology & Management · Vol. 4, Issue 3, 2014 · pp. 10–19 Read article
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Probabilistic Sensitivity Analysis of Cover Quantity and Quality of Reinforced Concrete Structures
Abstract: Design procedures based on current specifications do not always ensure required service life, mostly due to the environmental effect, error at the time of construction and underestimated cover properties at the time of design. Moreover, single-point value of any property does not provide rational support to the decision maker. Statistical resampling technique for each of the cover properties used to find out the service life of the structures is thus …
Published in Journal of Construction Engineering, Technology & Management · Vol. 2, Issue 1-3, 2012 · pp. 48–53 Read article
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Impact of water-cement ratio and cement content on pore area percentage and chloride diffusion – A molecular dynamics study
Abstract: The exposure of a reinforced structure to water-based settings leads to the occurrence of chloride-induced corrosion, resulting in a reduction in both the durability and performance of the structure. The entry of chloride ions into concrete and the pore area percentage is influenced by several elements, including the degree of humidity, the presence of fractures, environmental conditions, water-to-cement ratio (w/c ratio), and cement content. This research focuses on the utilization …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 3, 2023 · pp. 37–45 Read article
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Modeling and Performance Analysis of Electrical Vehicle with SPWM Inverter-fed IPMSM Taking Core Loss into Account
Abstract: Because of the advantages of electrical differentials, people are becoming more interested in using them rather than using mechanical differentials. The mechanical differentials are replaced by using the two rear motors. In the electrical vehicle (EV) different types of electrical machines such as induction motor, permanent magnet synchronous motor etc. are used. The design of a controller is a challenging work, as the output of the motor has to match …
Published in Journal of Control & Instrumentation · Vol. 7, Issue 1, 2016 · pp. 7–16 Read article
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Personal Assistant and Home Security Robot
Abstract: AbstractPersonal assistant and home security system increases human work efficiency and comfort. A prototype personal assistant and home security robot has been designed and implemented in this project. It also works with Google and functions as an assistant. The main goal is to develop a system for Face Detection and Google Assistant. Face Detection and Google Assistant system are developed on Raspberry pi microcontroller by using python language. Image processing …
Published in Journal of Electronic Design Technology · Vol. 9, Issue 3, 2018 · pp. 30–35 Read article
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Seismic Induced Landslide Vulnerability in the Chittagong City, Bangladesh
Abstract: Chittagong is the second largest city of Bangladesh and evidences of hundreds of earthquakes that jolted this city and its surrounding areas. In this paper, we show the cause of slope failure in Chittagong city with the response of earthquake (seismic) activity. We have collected four in-situ samples from each of the upper and lower layers, i.e., eight samples from each of the seven different locations (Motijharna, Tankir Pahar, Batali …
Published in Journal of Geotechnical Engineering · Vol. 2, Issue 1, 2015 · pp. 1–13 Read article
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Assessment of Liquefaction Potential Index for Sylhet City considering Maximum and Average Amplification Factor
Abstract: Soil liquefaction often occurs in saturated or partially saturated silty or sandy soil when an earthquake generates dynamic cyclic stress in the soil mass, reducing shear strength and stiffness. This study aims to assess the seismic soil liquefaction hazard potential for Sylhet City using shear wave velocity profiles of 49 boreholes. Factor of Safety (FOS) was evaluated taking into account shear wave velocity and maximum intensity of surface acceleration corresponding …
Published in Journal of Geotechnical Engineering · Vol. 8, Issue 2, 2021 · pp. 1–12 Read article
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Soil liquefaction vulnerability assessment of Sylhet city based on SPT value
Abstract: Bangladesh is an earthquake-prone country due to its geographic location. Sylhet, a divisional city, is situated in Zone IV, the most seismically active area in the country, according to the Bangladesh National Building Code (BNBC). A major earthquake can cause devastating effects in the subsurface, such as liquefaction, landslides resulting from a reduction of soil shear resistance. In this study, liquefaction potentiality of soil in Ward No. 9 of Sylhet …
Published in Journal of Geotechnical Engineering · Vol. 10, Issue 3, 2023 · pp. 13–28 Read article
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A Review On The Design And Implementation Of A Robotic Arm For Collecting Covid-19 Samples
Abstract: The Covid-19 virus first infected humans around the end of 2019, and since then, people worldwide have witnessed the infection's terrible history. Many scientific treatments have been explored to stop the COVID-19 virus from spreading. However, if they are in close proximity to the victim, their chances of getting the virus increase. Therefore, a robotic arm may be designed and implemented for the safety of medical staff during Covid sampling. …
Published in Journal of Instrumentation Technology & Innovations · Vol. 12, Issue 3, 2022 · pp. 30–38 Read article
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Universal Microcontroller Trainer Board Design for Speed Controlling of BLDC Motor and Text Controlling of Dot-Matrix Display
Abstract: Reduce Instruction Set Computing (RISC) related micro-controlling is taking over modern life little by little. Practicing these phenomena becoming necessary in engineering sectors. In this research, a segmented laboratory-kit has been developed to involve students in controlling Brushless Direct Current (BLDC) Motor and Light Emitting Diode (LED) Dot Matrix Display. This lab kit introduces several features for those two modules. The Rotation Per Minute (RPM) measurement using Infrared (IR) sensor, …
Published in Journal of Microcontroller Engineering and Applications · Vol. 8, Issue 3, 2021 · pp. 6–21 Read article
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Fabrication and Characterization of Jute Fiber Reinforced PP-Clay-based Nanocomposites
Abstract: AbstractNanocomposite is a new concept in the field of plastic-based composites. Jute fabric (hessian cloth)-reinforced polypropylene (PP) composites with different nanoclays were prepared by compression molding. Jute fiber content in the composites was approximately 50%. Mechanical properties of PP-clay blend and PP-clay/jute fiber composites were characterized. It was found that 5% clay containing PP-clay/jute composites showed the best results. Tensile strength (TS), elongation at break (EB) and tensile modulus (TM) …
Published in Journal of Polymer & Composites · Vol. 2, Issue 1, 2023 · pp. 19–29 Read article
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Small Scale Horizontal Axis Wind Turbine
Abstract: In this work, the performance analysis of a designed small scale horizontal axis wind turbine (HAWT) has been presented and optimized by varying span length and chord length. The HAWT blades are shaped to generate maximum power from the wind at minimum cost. The blades are designed by using QBlade software and simulated in blade element method (BEM).The values of tip speed ratio and power coefficient have been obtained as …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 3, 2014 · pp. 26–32 Read article
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Study on the Response of Strengthening Strategies for Masonry-Infilled Open Ground Storey Framed Building
Abstract: The strengthening of reinforced concrete (RC) frame buildings with masonry-infill wall and with open ground storey is a very timely and significant topic because of the poor performance against seismic action. The absence of infill walls in the ground storey makes the ground storey less stiff and weaker than the all upper story’s which results in a poor performance against lateral loads. Soft storey mechanism prevails in these cases and …
Published in Journal of Structural Engineering and Management · Vol. 8, Issue 2, 2021 · pp. 22–37 Read article
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Triangular Waveform Generation using Mixed Signal Modeling
Abstract: The development of modeling languages such as Verilog-HDL and Verilog-AMS allows the behavior of analogue and mixed signal circuits to be described with a more lucid way as compared to the conventional circuit-level simulators. Mixed-signal simulators are thus providing a new platform for more efficient modeling of mixed signal that contains both the analogue and discrete features which was not previously possible. The non-linear characteristics of many circuits are still …
Published in Journal of VLSI Design Tools and Technology · Vol. 4, Issue 2, 2014 · pp. 8–17 Read article