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1935 articles for “VAR” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Simulation Study of Process Variations in Double Gate Junctionless Field-Effect Transistors
Abstract: This work discusses the process variations in symmetrical double-gate (DG) junctionless (JL) field-effect transistors (FETs) by device simulation. Output I-V characteristics along with subthreshold slope increase, DIBL variations with drain voltage and threshold voltage shift variations are systematically analyzed with the general variability issues including oxide thickness, channel thickness and doping concentration. Potential distribution in the body channel region is also analyzed. Optimum values of the variability factors are considered …
Published in Journal of Semiconductor Devices and Circuits · Vol. 2, Issue 2, 2015 · pp. 18–27 Read article
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Damping Power System Oscillations using Fuzzy based Power System Stabilizer with Seven and Nine Linguistic Variables
Abstract: Low-frequency oscillations are created in a power system due to insufficient damping. Low-frequency oscillations in a power system can be damped using conventional power system stabilizer (CPSS) or fuzzy-based power system stabilizer (FLPSS). The performance of FLPSS is significantly affected by the number of linguistic variables used in designing FLPSS. In this paper, FLPSS is designed to damp the low frequency oscillations in a power system. The novelty of the …
Published in Trends in Electrical Engineering · Vol. 4, Issue 3, 2014 · pp. 35–40 Read article
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Evaluation of Impacts of Dispatch Headway Variability in Bus Transit Systems in a Simulated Route
Abstract: This paper presents reliability analysis of bus transit systems based on numerical simulation of the range of headway variations in a bus route consists of multiple stops. Variation of performance in bus operation due to the variation of departure headways is determined through number of simulations. Operational performance is measured by the average waiting time of passengers at stops. Simulation results show that average waiting time as well as spread …
Published in Trends in Transport Engineering and Applications · Vol. 1, Issue 3, 2014 · pp. 7–18 Read article
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Influence of Meteorological Parameters on Seasonal Ozone Variation over a Low Latitude Region of Rajasthan
Abstract: The seasonal variation of total column ozone (TCO) in Ajmer, Rajasthan, India, from 2005 to 2023 using meteorological parameters such earth skin temperature (TS) and relative humidity at 2m depth (RH2m) is investigated in this study. This is satellite and instrument-based data taken from GIOVANNI. For the investigation the data is averaged annually and then grouped into four seasons: winter, pre-monsoon, monsoon, and post-monsoon. There is notable seasonal variation in …
Published in International Journal of Atmosphere · Vol. 3, Issue 2, 2026 · pp. 55–63 Read article
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A Technique for Haze Removal Using Contrast Variation and DCP
Abstract: Image enhancement approach is one of the extensively used approaches for image quality enhancement through enhancing the image’s visibility. In this paper, an underwater image for enhancing the underwater image quality has been done and there a simple technique used for haze removal with the help of DCP. In this paper, we have shown two flow diagrams, one is used for base methodology and another for the proposed methodology. In …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 5, Issue 2, 2017 · pp. 23–38 Read article
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Measurement of Heart Rate Variability using FFT
Abstract: Nowadays, heart rate variability (HRV) is an important tool for the analysis of the activities of nervous system in medical Science. Electrocardiogram (ECG) is graphical representation of electrical activity of human heart. The various peaks of ECG can be utilized to detect and analyse mental stress of the brain. It varies with other parameters of healthy/abnormal human. This paper presents the evaluation of heart rate variability using fast Fourier transform …
Published in Recent Trends in Sensor Research & Technology · Vol. 3, Issue 3, 2016 · pp. 10–20 Read article
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Study in Variation of Ozone Concentration over Indian Subcontinent using Ozone Monitoring Instrument data
Abstract: Normal 0 false false false EN-US X-NONE X-NONE The paper gives an overview of a major application of remote sensing satellites in monitoring the ozone concentration present in the atmosphere. Ozone makes a significant contribution to the radiative balance of the upper troposphere and lower stratosphere and is an important constituent in the atmosphere, for it provides a protective shield against the harmful ultraviolet radiations. However, in the recent times, …
Published in Journal of Remote Sensing & GIS · Vol. 2, Issue 2, 2011 · pp. 13–20 Read article
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Spatio-Temporal Variability Assessment of Biophysical Parameters in the Tropical Deciduous Broadleaf Forest in Eastern India
Abstract: In the recent years, study of phenology variation has taken significance quintessential part of a bigger research agenda of seasonal change. This study has attempted to (a) analyse the monthly, quarterly, inter-annual and seasonal variation of vegetation (b) observe the variation in phenological transition dates of tropical deciduous broadleaf forest in eastern India from 2001 to 2014 (c) correlation between NDVI (Normalized Difference Vegetation Index) and LST (Land Surface Temperature) …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 2, 2015 · pp. 61–68 Read article
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Thermal Effect on Vibration of Non-homogeneous Parallelogram Plate of Linearly Varying Thickness
Abstract: In this paper, free vibration of non-homogeneous parallelogram plate of linearly varying thickness subjected to a linear temperature distribution along the length of the plate has been studied. Thermal Induced vibration of such plates has been taken as one dimensional temperature distribution in linear from only. The Rayleigh–Ritz technique has been used to determine the frequencies equation of the plate. The frequencies corresponding to the first two modes of vibration …
Published in Journal of Experimental & Applied Mechanics · Vol. 4, Issue 1, 2013 · pp. 8–14 Read article
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Evaluation of Malting Potential of Different Barley Varieties
Abstract: The grain and malt quality parameters of six malt barley variety were studied. This study was conducted to estimate the malting potential of different barley varieties (Beka, Holker, HB120, Bahate, Bokoji, and Sabini) collected from Kulumsa Agricultural Research Center. All the grain and malt quality parameters were conducted in the laboratory of Food Technology and Process Engineering at the IOT, Bahir Dar University. The three stages of malting (steeping, germination, …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 3, 2019 · pp. 24–35 Read article
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Study of Seasonal variation of Arsenic concentration in Ground water in Ghazipur district of Uttar Pradesh
Abstract: It was reported a clear temporal and seasonal variability of As concentrations in different water samples of Ghazipur district of eastern U. P. During post monsoon season As concentration decreases in Samples. A definite relationship exists between the behavior of arsenic and rainfall intensity. Groundwater quality depends on the composition of recharging water, the mineralogy and reactivity of the geological formations in aquifers, anthropogenic activities and environmental conditions that may …
Published in Journal of Water Pollution & Purification Research · Vol. 7, Issue 1, 2020 · pp. 31–37 Read article
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Response of Alfalfa (Medicago sativa L.) Varieties to NPS Fertilizer Rate in Mid Altitude of Southern Ethiopia
Abstract: Forage legume species adaptation has been done across Ethiopia; however, information on agronomic practice like fertilizer rate is generally scarce. So, the current study was to determine the influence of NPS fertilizer rate and varieties on dry matter yield, agronomic trait and nutritional value of Alfalfa at Werabe Agricultural Research Center (WARC). Experiment was applied factorial arrangement by using randomized complete block design with three replications. Fertilizer rates were (25, …
Published in Research & Reviews : Journal of Agricultural Science and Technology · Vol. 10, Issue 3, 2021 · pp. 27–34 Read article
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Analysis of Phenotypic and Genotypic Coefficient of Variance, Heritability and Genetic Advance Estimates in Wheat (Triticum aestivum L.)
Abstract: The present investigation was conducted to estimate the genotypic coefficient of variance (GCV) and phenotypic coefficient of variance (PCV). It was revealed that PCV was higher than GCV. This result indicated less effect of environment on the expression of character studies. High amount of genotypic and phenotypic variation was observed for the characters such as biological yield per plant, Harvest index, number of grain per ear and productive tillers per …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 6, Issue 3, 2017 · pp. 10–14 Read article
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Correlation and Variability among Yield and Yield Attributes of Advance Rice Genotypes in Rain Fed Condition
Abstract: AbstractThe present research consists of 12 rice (Oryza sativa L.) genotypes and the experiment was conducted during June–November, 2017 in randomized block design with the three replications at NARC, Kumaltar. The data were recorded for ten quantitative characters to study genetic variability, heritability, genetic advance and correlation coefficient analysis. Analysis of variance among 12 genotypes showed significant difference for all characters studied except non-effective tiller. Grain yield had positive significant …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 7, Issue 1, 2018 · pp. 27–34 Read article
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On Farm Performance Evaluation of Faba Bean Varieties in the Highlands of Gurage and Siltie Zones
Abstract: Faba bean is the major food security crop in Ethiopia. Even though there is potential agro-ecology in the study area for faba bean production, the yield is still lower. On farm performance evaluation of faba bean varieties are important to increase faba bean production and productivity in the study area. The experiment was conducted in three districts namely, Gumer, Geta (Gurage zone) and Alicho Wuriro (Siltie zone), Southern Ethiopia, during …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 9, Issue 2, 2020 · pp. 22–26 Read article
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Linseed Released Varieties Adaptation Trial at Sidama and Hadya Zones of Ethiopia
Abstract: Among oil crops, linseed is the third important commodity next to sesame (Sesamumindicum L.) and noug (Guizotiaabyssinica Cass.) in Ethiopia. Testing the adaptability of a variety over diverse environments is commonly evaluated by the degree of its interaction with different environments in which it is grown. An evaluation experiment was conducted in three districts, namely, Bule (Gedeo zone), Dara (Sidama zone) and Hosanna (Hadiya zone), Southern Ethiopia, during 2018 and …
Published in Research and Reviews : Journal of Crop science and Technology · Vol. 9, Issue 3, 2020 · pp. 10–14 Read article
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Distribution, Species Morphology, Phenotypic Variability and Phenology of Epilobium hirsutum L.: A Comparative Study
Abstract: AbstractThe species is distributed along an altitudinal range of 1500–2700m asl. Significant variability in phenotypic traits was observed within and across different populations. A considerable trend of decreasing phenotypic characteristics was observed with decrease in altitudinal gradient. The plants in transplanted site (KUBG) diverge in various traits and timing of phenophases from other three natural populations through Chadoora, Shopian and Shalimar. The plant height decreases with decrease in altitude and …
Published in Research & Reviews : Journal of Ecology · Vol. 6, Issue 2, 2017 · pp. 23–27 Read article
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Study of Seasonal Variation in Physicochemical Parameters of Fresh Water Bodies of District Rajouri, Jammu and Kashmir
Abstract: Drinking water quality is of elemental importance to human physiology and the durability of humanity depends very much upon its capability. The present work is aimed to review the quality of spring’s water in the rural area in district Rajouri. The three springs are named as Gopishah Ki Bowli, Khark Bowli and Badi Bowli. This has been determined by collecting spring water samples and subjecting the samples to a comprehensive …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 9, Issue 3, 2019 · pp. 71–77 Read article
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Ethno-pharmacological Review of Bauhinia variegate : A Potential Herbal Drug
Abstract: AbstractMedicinal plants are part and parcel of human society to combat diseases, from the dawn of civilization. There exists a plethora of knowledge, information and benefits of herbal drugs in our ancient literature of Ayurvedic, Siddha, Unani and Chinese medicine. Bauhinia variegata Linn. (Kanchanar/Rakta kanchan), is a widely used medicinal plant by the tribals throughout India and is popular in various indigenous systems of medicine like Ayurveda, Unani and Homoeopathy. …
Published in Research & Reviews : Journal of Herbal Science · Vol. 2, Issue 2, 2013 · pp. 6–11 Read article
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Deductive Group Method for Heat Transfer of Gas Laminar Forced Convection Flow with Variable Physical Property
Abstract: The deductive group transformation technique is applied to derive invariant solutions for laminar forced convection flow having variable physical property. The one-parameter deductive group transformation reduces the number of independent variables by one and hence governing partial differential equation is reduced to ordinary differential equation with appropriate boundary condition. Resulting ordinary differential equation is solved using mathematical software and the results are graphically presented. From the graph, it is observed …
Published in Research & Reviews : Journal of Physics · Vol. 8, Issue 2, 2019 · pp. 52–60 Read article