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Wyszukujesz frazę "Singh, S.V.P." wg kryterium: Autor

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    Wyświetlanie 1-7 z 7
    Tytuł:
    A short history of india’s economy: pre- and post-independence period
    Krótka historia gospodarki Indii: w okresie przed i po odzyskaniu niepodległości
    Autorzy:
    Shrotryia, V.K.
    Singh, S.V.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2051179.pdf
    Data publikacji:
    2020
    Wydawca:
    Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
    Tematy:
    economic history
    growth history
    India
    political economy
    pre-independence period
    postindependence period
    Opis:
    India is one of the most populated countries in the world and was famously known as the golden bird. It was known for its rich cultural heritage and some of the world’s most significant educational institutions. Over the countless decades and centuries, the invaders exploited the resources for their advantage. At the decline of the independence in 1947, it was left backward with one of the poorest economies of the world of that time. The richness of erstwhile India, the status of the golden bird, the sacred intellectual space that India occupied has only textual value for the present generation. Through this academic paper, an attempt has been made to address the following questions: what was the state of the economy of India during the pre- and post-independence period, how has India transformed herself from one of the most impoverished economies in 1947 to currently the third-largest economy in the world, and how is the current economic and non-economic status of India.
    Źródło:
    Economic and Regional Studies; 2020, 13, 4; 388-406
    2083-3725
    2451-182X
    Pojawia się w:
    Economic and Regional Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of inertia in the steady state pressurised flow of a non-Newtonian fluid between two curvilinear surfaces of revolution: Rabinowitsch fluid model
    Autorzy:
    Singh, U. P.
    Gupta, R.S.
    Kapur, V.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/185617.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    efekt bezwładności
    łożysko krzywoliniowe
    zewnętrzny przepływ ciśnieniowy
    curvilinear bearings
    Rabinowitsch fluid model
    inertia effect
    externally pressurized flow
    Opis:
    In many practical situations fluids are normally blended with additives (viscosity index improvers, viscosity thickeners, viscosity thinners) due to which they show pseudoplastic and dilatant nature which can be modelled as cubic stress model (Rabinowitsch model). The cubic stress model for pseudoplastic fluids is adopted because Wada and Hayashi have shown that the theoretical results with this model are in good agreement with the experimental results. The present theoretical analysis is to investigate the pseudoplastic effect along with the effect of rotational inertia on the pressure distribution, frictional torque and fluid flow rate of externally pressurised flow in narrow clearance between two curvilinear surfaces of revolution. The expression for pressure has been derived using energy integral approach. To analyse and discuss the effects of pseudoplasticity and fluid inertia on the pressure distribution, fluid flow rate and frictional torque, the examples of externally pressurised flow in the clearance between parallel disks and concentric spherical surfaces have been considered.
    Źródło:
    Chemical and Process Engineering; 2011, 32, 4; 333-349
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of machine learning algorithm for the better prediction of SR peculiarities of WEDM of Nimonic-90 superalloy
    Autorzy:
    Singh Nain, S.
    Sai, R.
    Sihag, P.
    Vambol, S.
    Vambol, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/378951.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    support vector machine
    Gaussian process
    artificial neural network
    WEDM
    maszyna wektorów nośnych
    proces gaussowski
    sztuczna sieć neuronowa
    Opis:
    Purpose: With the end goal to fulfil stringent structural shape of the component in aeronautics industry, machining of Nimonic-90 super alloy turns out to be exceptionally troublesome and costly by customary procedures, for example, milling, grinding, turning, etc. For that reason, the manufacture and design engineer worked on contactless machining process like EDM and WEDM. Based on previous studies, it has been observed that rare research work has been published pertaining to the use of machine learning in manufacturing. Therefore the current research work proposed the use of SVM, GP and ANN methods to evaluate the WEDM of Nimonic-90. Design/methodology/approach: The experiments have been performed on the WEDM considering five process variables. The Taguchi L 18 mixed type array is used to formulate the experimental plan. The surface roughness is checked by using surface contact profilometre. The evolutionary algorithms like SVM, GP and ANN approaches have been used to evaluate the SR of WEDM of Nimonic-90 super alloy. Findings: The entire models present the significant results for the better prediction of SR peculiarities of WEDM of Nimonic-90 superalloy. The GP PUK kernel model is dominating the entire model. Research limitations/implications: The investigation was carried for the Nimonic-90 super alloy is selected as a work material. Practical implications: The results of this study provide an opportunity to conduct contactless processing superalloy Nimonic-90. At the same time, this contactless process is much cheaper, faster and more accurate. Originality/value: An experimental work has been reported on the WEDM of Udimet-L605 and use of advance machine learning algorithm and optimization approaches like SVM, and GRA is recommended. A study on WEDM of Inconel 625 has been explored and optimized the process using Taguchi coupled with grey relational approach. The applicability of some evolutionary algorithm like random forest, M5P, and SVM also tested to evaluate the WEDM of Udimet-L605.The fuzzy- inference and BP-ANN approached is used to evaluate the WEDM process. The multi-objective optimization using ratio analysis approach has been utilized to evaluate the WEDM of high carbon & chromium steel. But this current research work proposed the use of SVM, GP and ANN methods to evaluate the WEDM of Nimonic-90.
    Źródło:
    Archives of Materials Science and Engineering; 2019, 95, 1; 12-19
    1897-2764
    Pojawia się w:
    Archives of Materials Science and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sensitivity enhancement of metamaterial-based surface plasmon resonance biosensor for near infrared
    Autorzy:
    Pal, S.
    Prajapati, Y. K.
    Saini, J. P.
    Singh, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/173477.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    metamaterials
    sensor sensitivity
    reflectance
    evanescent field
    Opis:
    The present study investigates the angular response and sensitivity of a surface plasmon resonance biosensor with metamaterial, by taking the advantage of the remarkable property of metamaterials. The proposed biosensor numerically shows that silver with a metamaterial layer enhances the sensitivity. The thickness of metamaterial and silver layer has been optimized. On comparing these results with a conventional surface plasmon resonance biosensor, it is observed that the sensitivity of the proposed biosensor is improved by introducing the metamaterial. The proposed biosensor has a sensitivity 6.3124 times higher than that of the conventional surface plasmon resonance sensor.
    Źródło:
    Optica Applicata; 2016, 46, 1; 131-143
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of organic inputs on strength and stability of soil aggregates under rice-wheat rotation
    Autorzy:
    Das, B.
    Chakraborty, D.
    Singh, V.K.
    Aggarwal, P.
    Singh, R.
    Dwivedi, B.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/25472.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    tensile strength
    stability
    soil aggregate
    rice
    wheat
    cereal crop rotation
    Opis:
    The study aims to elucidate the impact of organic inputs on strength and structural stability of aggregates in a sandy loam soil. Tensile strength, friability and water stability of aggregates, and the carbon contents in bulk soil and in large macro (>2 mm), small macro (0.25-2 mm), micro (0.053-0.25 mm) and silt+clay size (<0.053) aggregates were evaluated in soils from a long-term experiment with rice-wheat rotation at Modipuram, India, with different sources and amounts of organic C inputs as partial substitution of N fertilizer. Addition of organic substrates significantly improved soil organic C contents, but the type and source of inputs had different impacts. Tensile strength of aggregates decreased and friability increased through organic inputs, with a maximum effect under green gram residue (rice)-farmyard manure (wheat) substitution. Higher macroaggregates in the crop residue- and farmyard manure-treated soils resulted in a higher aggregate mean weight diameter, which also had higher soil organic C contents. The bulk soil organic C had a strong relation with the mean weight diameter of aggregates, but the soil organic C content in all aggregate fractions was not necessarily effective for aggregate stability. The soil organic C content in large macroaggregates (2-8 mm) had a significant positive effect on aggregate stability, although a reverse effect was observed for aggregates <0.25 mm. Partial substitution of nitrogen by organic substrates improved aggregate properties and the soil organic C content in bulk soil and aggregate fractions, although the relative effect varied with the source and amount of the organic inputs.
    Źródło:
    International Agrophysics; 2014, 28, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plant community characteristics and soil status in different land use systems in Dimapur district, Nagaland, India
    Autorzy:
    Singh, S.K.
    Kumar, K.W.
    Aier, B.
    Kanduri, V.P.
    Ahirwar, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/45630.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Badawczy Leśnictwa
    Źródło:
    Leśne Prace Badawcze; 2012, 73, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Passerine birds supporting cross pollination in Erythrina stricta Roxb.
    Autorzy:
    Khanduri, V.P.
    Kumar, K.S.
    Sharma, C.M.
    Riyal, M.K.
    Kar, K.
    Singh, B.
    Sukumaran, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078260.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Ornithophily
    pollination
    mating system
    geitonogamy
    pollen grains
    Opis:
    Erythina stricta is an ecologically important tree species in the rainforests of India and its nectar within the flowers contributes to birds’ diet and survival. Reports on the pollination of this species have not been published so far. We therefore explore the reproductive system of this tree species which has great significance to its ecosystem. Birds have an important role in the reproduction of trees through pollination particularly in tropical areas where reproductive success mostly depends on animal pollinator interactions. Study of visitation and nectar feeding behaviour of birds alongwith breeding system assessment of Erythina stricta. Birds visiting and foraging behaviour was observed during Erythrina stricta flowering season in an indian tropical rainforest. Reproductive system was assessed through controlled pollination experiments. Thirteen bird species were recorded visiting and foraging nectar from the flowers of Erythrina stricta. The maximum numbers of visits recorded were from the Red-vented Bulbul (Pycnonotus cafer, Pycnonotidae). The nectar feeding birds were, either (i) potential pollinator with long bills (e.g. Pycnonotus spp., Chloropsis aurifrons, and Dicrurus spp.) or (ii) nectar robbers with comparatively shorter bills (e.g. Zosterops palpebrosa, Stachyris ruficeps, Macronous gularis, Heterophasia glaciris). Controlled pollination experiments revealed high degree of cross pollination (xenogamy) and self-incompatibility in E. stricta. Birds were more frequent in early mornings and their foraging activity was also observed during evening hours; the frequency however, declined with respect to nectar availability. Long corolla tubes of E. stricta could restrict access to nectar collecting bees
    Źródło:
    Dendrobiology; 2021, 85; 117-126
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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