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1
Efficiency of consortium for in-situ bioremediation and CO2 evolution method of refines petroleum oil in microcosms study
100%
Dutta S. , Singh P.
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nr 2
2
Yamuna river water treatment using a natural coagulant of Citrullus lanatus seeds
100%
Singh P. , Saxena I.
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tom 149
3
Content available remote Finite element stress analysis of laminated composite plates
100%
Singh P. , Singh R.
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tom Vol. 16, no 3
851-867
EN
In the present work, a finite element program based on the classical lamination theory improved by Vinson's weighting function to include transverse shear effects is developed for the analysis of laminated composite plates. The finite element analysis of a clamped three layered square symmetric laminate under uniform loading is carried out using 8-noded isoparametric elements having five degrees of freedom at each node. The effect of plate side-to-thickness ratio (a/h) 4, 10, 50 and 100 100 is studied on the maximum values of the non-dimensionalized central deflection (w), non-dimensionalized stress resultants [...] and non-dimensionalized stresses [...]. The variation of non-dimensionalized normal stresses [...] and shear stresses [...] through the thickness (z/h) of the laminate at plate side-to-thickness ratio (a/h) 10 is also studied.
4
Content available remote Reach of an inclined cantilever with a tip load
100%
Singh P. , Goss V. G. A.
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2019
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tom Vol. 71, nr 6
595--614
EN
We investigate the problem of determining the reach of an inclined cantilever for a given point load suspended from its tip. Two situations are considered. Firstly, we find the maximum reach of the cantilever by varying its angle of inclination. Secondly, we find the reach of the cantilever subject to the condition that its tip is at some specified height, above or below, the level of the clamped end. In the second case, the reach of the cantilever is maximised by shortening its physical length whilst keeping the physical load and physical height of load deployment constant. All of our solutions representing various reaches of an inclined cantilever for a given point load suspended from its tip are shown to be stable to the snap-back instability.
5
Content available remote Ranking of generalized fuzzy numbers with generalized fuzzy simplex algorithm
100%
Kumar A. , Singh P.
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2011
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tom Vol. 34
53--73
EN
Ranking of fuzzy numbers play an important role in decision making problems. Fuzzy numbers must be ranked before an action is taken by a decision maker. Jain (Decision-making in the presence of fuzzy variables, IEEE Transactions on Systems, Man and Cybernetics 6 (1976) 698-703) proposed the concept of ranking function for comparing normal fuzzy numbers. Chen (Operations on fuzzy numbers with function principal, Tamkang Journal of Management Science 6 (1985) 13-25) pointed out that in many cases it is not to possible to restrict the membership function to the normal form and proposed the concept of generalized fuzzy numbers. Chen and Chen (Fuzzy risk analysis based on the ranking generalized fuzzy numbers with different heights and different spreads, Expert Systems with Applications 36 (2009) 6833-6842) pointed out the shortcomings of the existing methods for the ranking of generalized fuzzy numbers and proposed a new method. In this paper the shortcomings of the Chen and Chen method are pointed out and a new method is proposed for the ranking of generalized fuzzy numbers. Also using the proposed ranking method, a generalized simplex algorithm is proposed for solving a special type of fuzzy linear programming (FLP) problems. To illustrate the proposed algorithm a numerical example is solved and the advantages of the proposed algorithm are discussed. Since the proposed algorithm is a direct extension of classical algorithm so it is very easy to understand and apply the proposed algorithm to find the optimal solution of FLP problems occurring in the real life situations.
6
Content available Relay-assisted WDM-FSO System: A Better Solution for Communication under Rain and Haze Weather Conditions
80%
Dayal N. , Singh P. , Kaur P.
Journal of Telecommunications and Information Technology
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2017
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tom nr 4
54--59
EN
Among various conventional wireless communication systems, Free Space Optics (FSO) may be distinguished as well, which provides a good level security, high data rates, an enormous bandwidth and negligible susceptibility to electromagnetic interference. The main problem arises with unfavorable weather conditions, which affect the system’s parameters and require an aversion to other paths. The weather conditions discussed are rain and haze. Elimination of their adverse effects is essential for establishing a better communication system. The routing path is a major issue, as its decreased parameters lead to the diversion of the transmitted signal or to its total loss. In this article, increased system path length and proficiency levels are demonstrated by using relays, which are assisted by Wavelength Division Multiplexing (WDM).
7
Content available remote Fuzzy Logic Based Adaptive Resonance Theory-1 Approach for Offline Signature Verification
80%
Jain C. , Singh P. , Rana A.
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tom Vol. 22, no. 3
23--30
EN
This paper presents the use fuzzy logic with adaptive resonance theory-1 in signature verification. Fuzzy model is capable of stable learning of recognition categories in response to arbitrary sequences of binary input pattern. The work was carried out on two famous available signature corpuses i.e. MCYT (Online Spanish signatures database) and GPDS (Grupo de Procesado Digital de la se?al). Local binary patterns (LBP) and Gray Level Co-occurrence Matrices (GLCM) features were calculated for robust offline signature verification system. Training and verification was done using fuzzy adaptive resonance theory-1(FART-1). The system is trained and verified for different datasets to increase the accuracy of the classifier. The results thus obtained are robust than other existing techniques. The FAR and FRR for the system is 0.74% and 0.83% respectively.
8
Content available remote On the magnetorotatory thermosolutal convection (MRTC) of the Veronis type in the presence of Soret effect
80%
Mohan H. , Kumar P. , Singh P.
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2009
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tom Vol. 31, nr 2
51-63
EN
In the present paper, we mathematically prove that the Soret-driven thermosolutal convection of the Veronis type under the simultaneous effect of uniform vertical rotation and magnetic field cannot manifest itself as oscillatory motions of growing amplitude if the thermosolutal Rayleigh number Rs, the Lewis number ζ, the Prandtl number δ and the magnetic Prandtl number δ 1 satisfy the inequalities
9
Content available Mitigation of Scintillation Effects in WDM FSO System using Multibeam Technique
80%
Grover M. , Singh P. , Kaur P.
Journal of Telecommunications and Information Technology
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2017
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tom nr 2
69--74
EN
Free Space Optical communication (FSO) has engrossed a large section of researchers in recent times due to its wide bandwidth, effortless deployment and immune links making it appropriate for communication purposes. This wireless optical technique requires clear and non-turbulent atmospheric conditions for efficient transmission. In this paper, authors aim at reducing the effect of turbulent atmospheric conditions like scintillation effect on FSO. Multibeam technique, which uses spatially diverse transmitters for transmission, has been used for increasing the achievable link distance of the FSO system. Parameters like quality factor and bit error rate have been used to check the received signal quality.
10
Human lipoprotein lipase deficiency: does chronic dyslipidemia lead to increased oxidative stress and mitochondrial DNA damage in blood cells ?
80%
Ven M. M. R. , Julien P. , Singh P. , Levy E.
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nr 1
EN
Lipoprotein lipase (LPL) is a key enzyme in the metabolism of lipoproteins and their balanced distribution in the plasma. A deficiency of this enzyme due to gene mutations leads to severe dyslipidemia. In this report, we describe the major LPL gene mutations that are prevalent in the French-Canadian population of Québec and the nature of dyslipidemia caused by the resulting enzyme deficiency. We discuss the possibility that dyslipidemia caused by LPL deficiency may enhance oxidative stress in the blood cells, bring about increased fluidity of the membrane components of these cells and increase the susceptibility of their mitochondrial DNA to structural alterations. Some preliminary experimental results in verification of this hypothesis are presented.
11
Study of refrigerated storage of Nephrolepis fronds
80%
Singh P. , Singh K. , Kumar R.
Journal of Fruit and Ornamental Plant Research
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2003
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tom 11
12
Effect of levels of feed intake on plasma concentration and urinary excretion of purine derivatives in crossbred bulls
71%
George S. K. , Dipu M. T. , Mehra U. R. , Verma A. K. , Singh P.
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nr 1
26-36
13
Evaluation of purine metabolites - creatinine index to predict the rumen microbial protein synthesis from urinary spot samples in Barbari goats
71%
George S. K. , Verma A. K. , Mehra U. R. , Dipu M. T. , Singh P.
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2011
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tom 20
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nr 4
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