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Wyszukujesz frazę "Kumar, Rakesh" wg kryterium: Autor

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    Wyświetlanie 1-12 z 12
    Tytuł:
    Design and analysis of MOS based Magnetic Field Sensor
    Autorzy:
    Kumar, Rakesh
    Powiązania:
    https://bibliotekanauki.pl/articles/1075557.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CMOS Technology
    Hall Effect
    Lorentz force
    MagFET device
    Magnetic sensor
    Opis:
    Magnetic sensors are widely used in various applications such as consumer electronic products (mobile phones, laptops), biomedical applications (brain function mapping), navigation, vehicle detection, mineral prospecting, non-contact switching (keyboard), contactless temperature measurement, wireless sensor network etc. Sensitivity of MagFET devices towards magnetic field, depends on the shape, dimensions VGS, VDS. In this paper we have measured effect of Physical design of gate on sensitivity of MagFET.
    Źródło:
    World Scientific News; 2019, 121; 42-47
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of goal programming in the textile apparel industry to resolve production planning problems : a meta-goal programming technique using weights
    Autorzy:
    Malik, Zahid Amin
    Kumar, Rakesh
    Pathak, Govind
    Roy, Haridas
    Powiązania:
    https://bibliotekanauki.pl/articles/2175839.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    meta-goal programming
    weighted goal programming
    multi-objective decision making
    asset allocation
    textile sector
    sensitivity analysis
    Opis:
    In the present business environment, rapidly developing technology and the competitive world market pose challenges to the available assets of industries. Hence, industries need to allocate and use available assets at the optimum level. Thus, industrialists must create a good decision plan to guide their performance in the production sector. As a result, the present study applies the Meta-Goal Programming technique to attain several objectives simultaneously in the textile production sector. The importance of this study lies in pursuing different objectives simultaneously, which has been almost ignored till now. The production scheduling problem in a textile firm is used to illustrate the practicability and mathematical validity of the suggested approach. Analysis of the results obtained demonstrates that the solution met all three meta-goals with some original goals being met partially. An analysis of the sensitivity of the approach to the weights of the preferences was conducted.
    Źródło:
    Operations Research and Decisions; 2022, 32, 2; 74--88
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Core-Shell Mechanocomposites of Drugs with Inorganic Oxides and Hydroxides
    Autorzy:
    Shakhtshneider, T.
    Myz, S.
    Boldyreva, E.
    Nizovskii, A.
    Kumar, Rakesh
    Powiązania:
    https://bibliotekanauki.pl/articles/1375599.pdf
    Data publikacji:
    2014-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    62.25.-g
    Opis:
    The composites of piroxicam and meloxicam with gamma-alumina, aluminium hydroxides (gibbsite and boehmite), alpha and gamma polymorphs of iron(III) oxide having different surface area and morphology were prepared by planetary ball-milling. It has been shown that the initial state of the excipient (specific surface area, particle size and morphology) had a pronounced effect on the formation of the core-shell composites with the drugs and their properties. The X-ray diffraction patterns and IR spectra measured for co-milled samples as well as X-ray photoelectron spectroscopy studies gave evidence that the components of the mixtures interacted with each other and became amorphous, as composites were formed. The drug release from the composites was different as compared with pure drugs, meloxicam and piroxicam behaving differently that can be explained by formation of strong or weak bonds with the active sites of the carriers. In the case of mechanocomposites, the drugs dissolved quickly due to high surface of organic phase in the core-shell composites. The high-porous carriers can serve as the sorbents for the drugs in solution.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 4; 1019-1024
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanochemical Preparation of Organic-Inorganic Hybrid Materials of Drugs with Inorganic Oxides
    Autorzy:
    Shakhtshneider, T.
    Myz, S.
    Dyakonova, M.
    Boldyrev, V.
    Boldyreva, E.
    Nizovskii, A.
    Kalinkin, A.
    Kumar, Rakesh
    Powiązania:
    https://bibliotekanauki.pl/articles/1503409.pdf
    Data publikacji:
    2011-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    62.25.-g
    Opis:
    The nanocomposites of piroxicam and meloxicam with alumina were obtained by ball-milling as a result of distribution of the drugs at the surface of oxide with formation of the stable composites. The observed changes in the IR spectra of the ball-milled mixtures suggested the interaction of the drugs with the alumina active surface sites. The functional groups in molecules of piroxicam and meloxicam involved into formation of bonds between the drugs and the surface of the oxide were determined, they are amide, sulfate, enol groups, and pyridyl / thiazolyl nitrogen atoms. It appears that the formation of the new bonds at the contacts of particles in the composite leads to the stabilization of the drugs in metastable state inhibiting their transformation into initial crystalline form.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 2; 272-278
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pressure Settlement Behaviour and Bearing Capacity of Asymmetric Embedded Plus Shaped Footing on Layered Sand
    Autorzy:
    Rawat, Priyanka
    Dutta, Rakesh Kumar
    Powiązania:
    https://bibliotekanauki.pl/articles/2051675.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    granulated blast furnace slag
    soil stabilization
    settlement
    shaped footing
    numerical investigations
    żużel wielkopiecowy granulowany
    stabilizacja gruntu
    osiadanie
    ława fundamentowa
    badania numeryczne
    Opis:
    The aim of the present numerical study was to analyse the pressure settlement behaviour and bearing capacity of asymmetric plus shaped footing resting on loose sand overlying dense sand at varying embedment depth. The numerical investigation was carried out using ABAQUS software. The effect of depth of embedment, friction angle of upper loose and lower dense sand layer and thickness of upper loose sand on the bearing capacity of the asymmetric plus shaped footing was studied in this investigation. Further, the comparison of the results of the bearing capacity was made between the asymmetric and symmetric plus shaped footing. The results reveal that with increase in depth of embedment, the dimensionless bearing capacity of the footings increased. The highest increase in the dimensionless bearing capacity was observed at embedment ratio of 1.5. The increase in the bearing capacity was 12.62 and 11.40 times with respect to the surface footings F1 and F2 corresponding to a thickness ratio of 1.5. The lowest increase in the dimensionless bearing capacity was observed at embedment ratio of 0.1 and the corresponding increase in the bearing capacity was 1.05 and 1.02 times with respect to the surface footing for footings F1 and F2 at a thickness ratio of 1.5.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 3; 152-176
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physico-Chemical Analysis of Soil during Summer Season in Lentic Fresh Water Ecosystem: Nakki Lake-Mount Abu (Rajasthan), India
    Autorzy:
    Gothwal, Rakesh
    Gupta, Govind Kumar
    Powiązania:
    https://bibliotekanauki.pl/articles/1076524.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Alkaline
    Deflocculating
    Lake-Ecosystem
    Lentic
    Physico-chemical
    Water ecosystem
    Opis:
    The objective of the research is to identify the status of physico-chemical parameters of the soil in the surrounding area of Nakki-Lake, Mount Abu, Rajasthan, India. Soil parameter plays a major role in determining the planktonic and plant biodiversity, which determines the portability of water and their inter-relationship among zooplanktons and other animals; balances the environmental equilibrium in a lake-ecosystem. The physico-chemical parameters were studied and the result confirms that the soil in the surrounding area of Nakki-Lake can be classified as moderately alkaline soil with (pH 7.11), Average Sand Content (75.12%), Silt Content (11.23%), Clay Content (6.25%), Organic Matter (3.36%), Permeability (27.66 mm/hr), Air Filled Porosity (14.33%) and other parameters showed low mean values including Nitrogen (0.23 mg/L), Phosphorus (52.33 mg/L), Potassium (732.67 mg/L), Magnesium (153.67 mg/L), Chloride (4108.33 mg/L), Sulphur (244.33 mg/L). The soil samples showed an average of Bulk Density (1453 kg/m3), Specific Gravity (2.62), Fusion Point (1245.67 °C), Total Combustible (0.22%), Exchangeable Sodium (0.91%), Calcium Carbonate (1.48%), Effective Temperature of Destruction (971.33 °C), Electrical Conductivity - CaSO4 Extract (2447 μS/cm) while average nitrate and sulphate levels were 31.19 mg/l and 123.73 mg/l respectively. Based on the result of the quality parameters of the soil analysis, the nature of the soil in Nakki Lake and the surrounding area is alkaline.
    Źródło:
    World Scientific News; 2019, 115; 117-127
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Limnology, Planktonic diversity and Ichthyofauna of Sant-Sarover Pond: Mount Abu (Rajasthan), India
    Autorzy:
    Gothwal, Rakesh
    Gupta, Govind Kumar
    Powiązania:
    https://bibliotekanauki.pl/articles/1078278.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biodiversity
    Eutrophic
    Lentic
    Limnology
    Planktonic
    Sant-Sarover
    ichthyofauna
    Opis:
    Limnological parameter promotes ecological diversity and acts as major key factors of the water body. The portability of water can be determined by planktonic and fish diversity in that water body. Mount Abu (Arbudanchal) is also referred as a place with abode of Gods as it is sated with devotion of all faith. The research site Sant-Sarover Pond has a mythological importance among the localised. In the weather cycle of monsoon (2018), the specific status of limnological characteristic, planktonic diversity and ichthyofauna of Sant-Sarover Pond have been studied through top and bottom water samples. The Limnological parameters of Sant-Sarover Pond showed low mean values including hardness (104.83 mg/l) and TDS (142.0 mg/l)) with optimum alkaline water (pH 7.12), and alkalinity of (98.50 mg/l) Secchi Depth of 80 cm. The average nitrate and sulphate levels were 28.57 mg/l and 122.28 mg/l while average dissolved oxygen levels were at 5.45 mg/l respectively. Based on the results of limnological parameters of water, Sant-Sarover Pond is eutrophic.
    Źródło:
    World News of Natural Sciences; 2019, 22; 129-138
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Limnological study of Lentic Fresh Water Ecosystem during Summer Season: Nakki Lake-Mount Abu, Rajasthan, India
    Autorzy:
    Gothwal, Rakesh
    Gupta, Govind Kumar
    Powiązania:
    https://bibliotekanauki.pl/articles/1158266.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biodiversity
    Eutrophic
    Lentic
    Limnology
    Nakki-Lake
    Plankton
    Opis:
    Limnological parameter plays a key role in determining the ecological biodiversity. Planktonic diversity can be considered as a major key factor for determining the portability of water. Nakki Lake has the greatest importance amongst the localised. With a seasonal survey, the specific status of limnological characteristic and planktonic diversity in Nakki Lake have been studied through different weather cycles (2017) across three region based on the geography and in contact with human population over top and bottom water samples. With moderately alkaline water (pH 7.08), alkalinity of (102.16 mg/l) and other limnological parameters showed low mean values including TDS (161.83 mg/l), chloride (109.73 mg/l), and hardness (95.66 mg/l). The average dissolved oxygen levels were at 5.75 mg/l while average nitrate and sulphate levels were 31.19 mg/l and 123.73 mg/l respectively. Based on the results of quality parameters of water and soil, Nakki Lake is eutrophic.
    Źródło:
    World Scientific News; 2018, 114; 44-54
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An AI & ML based detection & identification in remote imagery: state-of-the-art
    Autorzy:
    Hashmi, Hina
    Dwivedi, Rakesh
    Kumar, Anil
    Powiązania:
    https://bibliotekanauki.pl/articles/2141786.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    convolutional neural network
    remote sensed imagery
    object detection
    artificial intelligence
    feature extraction
    deep learning
    machine learning
    Opis:
    Remotely sensed images and their allied areas of application have been the charm for a long time among researchers. Remote imagery has a vast area in which it is serving and achieving milestones. From the past, after the advent of AL, ML, and DL-based computing, remote imagery is related techniques for processing and analyzing are continuously growing and offering countless services like traffic surveillance, earth observation, land surveying, and other agricultural areas. As Artificial intelligence has become the charm of researchers, machine learning and deep learning have been proven as the most commonly used and highly effective techniques for object detection. AI & ML-based object segmentation & detection makes this area hot and fond to the researchers again with the opportunities of enhanced accuracy in the same. Several researchers have been proposed their works in the form of research papers to highlight the effectiveness of using remotely sensed imagery for commercial purposes. In this article, we have discussed the concept of remote imagery with some preprocessing techniques to extract hidden and fruitful information from them. Deep learning techniques applied by various researchers along with object detection, object recognition are also discussed here. This literature survey is also included a chronological review of work done related to detection and recognition using deep learning techniques.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2021, 15, 4; 3-17
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Semantic Segmentation of Diseases in Mushrooms using Enhanced Random Forest
    Autorzy:
    Yacharam, Rakesh Kumar
    Sekhar, Dr. V. Chandra
    Powiązania:
    https://bibliotekanauki.pl/articles/31339414.pdf
    Data publikacji:
    2023
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Instytut Informatyki Technicznej
    Tematy:
    mushroom diseases
    semantic segmentation
    computer aided
    Machine Learning
    significant feature extraction
    Random Forest classifier
    Opis:
    Mushrooms are a rich source of antioxidants and nutritional values. Edible mushrooms, however, are susceptible to various diseases such as dry bubble, wet bubble, cobweb, bacterial blotches, and mites. Farmers face significant production losses due to these diseases affecting mushrooms. The manual detection of these diseases relies on expertise, knowledge of diseases, and human effort. Therefore, there is a need for computer-aided methods, which serve as optimal substitutes for detecting and segmenting diseases. In this paper, we propose a semantic segmentation approach based on the Random Forest machine learning technique for the detection and segmentation of mushroom diseases. Our focus lies in extracting a combination of different features, including Gabor, Bouda, Kayyali, Gaussian, Canny edge, Roberts, Sobel, Scharr, Prewitt, Median, and Variance. We employ constant mean-variance thresholding and the Pearson correlation coefficient to extract significant features, aiming to enhance computational speed and reduce complexity in training the Random Forest classifier. Our results indicate that semantic segmentation based on Random Forest outperforms other methods such as Support Vector Machine (SVM), Naïve Bayes, K-means, and Region of Interest in terms of accuracy. Additionally, it exhibits superior precision, recall, and F1 score compared to SVM. It is worth noting that deep learning-based semantic segmentation methods were not considered due to the limited availability of diseased mushroom images.
    Źródło:
    Machine Graphics & Vision; 2023, 32, 2; 129-146
    1230-0535
    2720-250X
    Pojawia się w:
    Machine Graphics & Vision
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ultimate Bearing Capacity of Strip Footing on Sand Underlain By Clay Under Inclined Load
    Autorzy:
    Dutta, Rakesh Kumar
    Khatri, Vishwas Nandkishor
    Kaundal, Nitesh
    Powiązania:
    https://bibliotekanauki.pl/articles/27314700.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    strip footing
    bearing capacity
    layered soils
    load
    ława fundamentowa
    nośność
    grunt wielowarstwowy
    obciążenie
    Opis:
    This paper presents the bearing capacity determination of strip footing placed on sand underlain by clay and subjected to inclined loading. The bearing capacity equation is derived within the framework of limit equilibrium by following the projected area approach. The inclinations of load spread were selected by performing an additional finite element analysis. A parametric study was conducted to highlight the effect of various input parameters such as i) the thickness of the top sand layer, ii) embedment depth of footing, iii) the friction angle of sand and cohesion of clay, and iv) inclination of the applied load. The obtained results for a vertically loaded footing are slightly underestimated with that available in the literature. The computed bearing capacity values for a foundation with inclined loading compare favorably for lower inclination angle but slightly overestimates for higher load inclination angle, concerning that obtained using the available formula in the literature.
    Źródło:
    Civil and Environmental Engineering Reports; 2022, 32, 1; 116--137
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilization of Wallostonite/ Quasi Isotropic S2 Glass Fiber Doped in to Epoxy on Mechanical and Thermal Properties
    Autorzy:
    Reddy, D.M.
    Rakesh, C.H.
    Karthikeyan, N.
    Kumar, M. A.
    Nagaraju, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/412223.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Epoxy
    Wallostonite
    S2 glass fiber
    characterization
    DSC
    TGA
    Opis:
    Study focused on the performance of injection moulded short Wallostonite filler and chopped glass fiber reinforced hybrid epoxy composites. Results showed that hybridization of glass fiber and Wallostonite was found to be comparable to that of epoxy glass fiber composites. Analysis of fiber length distribution in the composite and fracture surface was performed to study fiber breakage fracture mechanism. The simultaneous compounding of epoxy with two fillers was done to obtain a hybrid composite. The mechanical properties of hybrid, injection molded, chopped glass fiber/ Wallostonite/epoxy composites have been investigated by considering the effect of hybridization by these two fillers. This system is expected to have considerable mechanical properties. It has been found that the tensile, flexural, and impact properties of the filled epoxy were higher than those of unfilled epoxy. The hybrid effects of the tensile strength and modulus were studied by the rule of hybrid mixtures (RoHM) using the values of single fiber composites.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2015, 40; 24-35
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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