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Search Results: 1 - 10 of 505 matches for " Jaivir Tyagi "
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Simulation of Runoff and Sediment Yield for a Himalayan Watershed Using SWAT Model  [PDF]
Sanjay K. Jain, Jaivir Tyagi, Vishal Singh
Journal of Water Resource and Protection (JWARP) , 2010, DOI: 10.4236/jwarp.2010.23031
Abstract: Watershed is considered to be the ideal unit for management of the natural resources. Extraction of water-shed parameters using Remote Sensing and Geographical Information System (GIS) and use of mathematical models is the current trend for hydrologic evaluation of watersheds. The Soil and Water Assessment Tool (SWAT) having an interface with ArcView GIS software (AVSWAT2000/X) was selected for the estimation of runoff and sediment yield from an area of Suni to Kasol, an intermediate watershed of Satluj river, located in Western Himalayan region. The model was calibrated for the years 1993 & 1994 and validated with the observed runoff and sediment yield for the years 1995, 1996 and 1997. The performance of the model was evaluated using statistical and graphical methods to assess the capability of the model in simulating the run-off and sediment yield from the study area. The coefficient of determination (R2) for the daily and monthly runoff was obtained as 0.53 and 0.90 respectively for the calibration period and 0.33 and 0.62 respectively for the validation period. The R2 value in estimating the daily and monthly sediment yield during calibration was computed as 0.33 and 0.38 respectively. The R2 for daily and monthly sediment yield values for 1995 to 1997 was observed to be 0.26 and 0.47.
Soil Water Retention Modeling Using Pedotransfer Functions
R. K. Jaiswal,T. Thomas,R. V. Galkate,Jaivir Tyagi
ISRN Civil Engineering , 2013, DOI: 10.1155/2013/208327
Abstract: The unsaturated hydraulic functions are key input data in numerical models of vadose zone processes. The direct measurement of soil moisture at different suction heads requires detailed analysis of soil samples with sophisticated instruments which can be replaced with the help of pedotransfer functions (PTFs) which are empirical relationships between the soil hydraulic properties and the more easily obtainable basic soil properties. The CalcPTF software has been used to compute the parameters of the most commonly used models of Brooks and Corey (BC) and Van Genuchten (VG) from PTFs for determination of soil water retention curves on seventeen sites in the commands of Benisagar and Rangawan reservoirs in Chhatarpur district (MP), India. The parameters of sixteen PTFs have been estimated and results have been compared with observed data using root mean square error (RMSE), coefficient of determination (R2), , and graphical representation. The PTF of BC model suggested by Rawls and Brakensiek, 1985 (BC-RB), has been found to be the best-fit PTF for sites 1, 2, 5, 6, 10, 11, 14, 15, and 17, where BC model by Saxton et al., 1986 (BC-SEL), can be used for modeling the soil moisture for sites 3, 4, 9, 12, and 16. It may be concluded that the PTF suggested by Rawls and Brakensiek, 1985 (BC-RB), or Saxton et al., 1986 (BC-SEL), can be used for computation of soil moisture retention curves in the region. 1. Introduction The common conceptual models for unsaturated flow often rely on the oversimplified representation of medium pores as a bundle of cylindrical capillaries and assume that soil water pressure head is attributed to capillary forces only and ignores the adsorptive surface forces. Hence, it is often assumed that aqueous flow is negligible when a soil is near or at residual water content ( ). The reason for the finite value of is that the dominant historical water-content measurements were in the wet range, and the typical soil water retention models assumed asymptotic behavior at low water content values. It is generally treated as a fitting parameter. Hence, an effective saturation is often defined as with being water content and the saturated water content [1]. To use the model, additional parameters must be known to quantify the contribution of film flow. Several functions have been proposed to empirically describe the soil water retention curve. These models were based on Rechards equation for flow of water in saturated or partly saturated soil. One of the most popular functions has been the equation given by Brooks and Corey in 1964 (BC) [2] which
Synthesis, characterization and biocidal properties of platinum metal complexes derived from 2,6-diacetylpyridine (bis thiosemicarbazone)  [PDF]
Monika Tyagi, Sulekh Chandra
Open Journal of Inorganic Chemistry (OJIC) , 2012, DOI: 10.4236/ojic.2012.23007
Abstract: The coordination compounds of PdII, PtII, RhIII and IrIII metal ions with a Schiff base ligand (L) i.e. 2,6- diacetylpyridine bis(thiosemicarbazone) have been synthesized and characterized by elemental analyses, molar conductance, magnetic susceptibility measurements, IR, NMR and electronic spectral studies. On the basis of molar conductance and elemental analyses the complexes were found to have composition [M(L)]Cl2 and [M’(L)Cl]Cl2, where M = Pd(II), Pt(II) and M’ = Rh(III), Ir(III). The spectral studies reveal that the complexes possess monomeric composition. Complexes of PdII and PtII were found to have four coordinated square planar geometry whereas the complexes of RhIII and IrIII posses six coordinated octahedral geometry. The ligand field parameters were calculated using various energy level diagrams. In vitro synthesized compounds and metal salts have been tested against some species of plant pathogenic fungi and bacteria in order to assess their antimicrobial properties.
Reliability Analysis of a Powerloom Plant Using Interval Valued Intuitionistic Fuzzy Sets  [PDF]
Sanjay Kumar Tyagi
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.513193
Abstract:

In this paper, we investigate the reliability analysis of a powerloom plant by using interval valued intuitionistic fuzzy sets (IVIFS). Herein, we modeled a powerloom plant as a gracefully degradable system having two units A(n) and B(m) connected in series. The reliability ofncomponents of unitAandmcomponents of unitBis assumed to be an IVIFS defined over the universe of discourse [0, 1]. Thus, the reliability of the system obtained is an IVIFS that covers the inherited uncertainty in data collection and reliability evaluation of a powerloom plant.

Significant Factors for Reliability Estimation of Component Based Software Systems  [PDF]
Kirti Tyagi, Arun Sharma
Journal of Software Engineering and Applications (JSEA) , 2014, DOI: 10.4236/jsea.2014.711083
Abstract: Software reliability is defined as the probability of the failure-free operation of a software system for a specified period of time in a specified environment. Traditional approaches for software reliability analysis are black box approaches. These approaches use the software as a whole. At present, main emphasis of software is on reuse, hence component based software applications came into existence. Black box models are not appropriate for these applications. This paper introduces some significant factors for reliability estimation of Component Based Software Applications. Reliability of Component Based Software Application depends upon these factors. This paper also gives the definition of factors and explains its relation with reliability of software application.
Study of system- size effects in multi- fragmentation using Quantum Molecular Dynamics model
Jaivir Singh,Rajeev K. Puri,J?rg Aichelin
Physics , 2001, DOI: 10.1016/S0370-2693(01)01073-5
Abstract: We report, for the first time, the dependence of the multiplicity of different fragments on the system size employing a quantum molecular dynamics model. This dependence is extracted from the simulations of symmetric collisions of Ca+Ca, Ni+Ni, Nb+Nb, Xe+Xe, Er+Er, Au+Au and U+U at incident energies between 50 A MeV and 1 A GeV. We find that the multiplicity of different fragments scales with the size of the system which can be parameterized by a simple power law.
Does Animation Facilitate Better Learning in Primary Education? A Comparative Study of Three Different Subjects  [PDF]
M. Shreesha, Sanjay Kumar Tyagi
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.713183
Abstract: The research and innovation in the field of computer and technology has made significant contribution for the development of new pedagogical strategies in all levels of education. The use of digital tools like animation has changed the way of providing education, especially in primary school level, adding an element of entertainment to the process of teaching and learning. It is assumed that the use of animated instructional material can help to present a complex concept in a simple form, create more interest about the subject, motivate the pupil for better learning, increase the accuracy of the message and play a crucial role in improving the students’ academic performance. Against this background, the present paper attempts to assess the efficacy of animation on different subjects in primary education. Here, in the study, an experiment has been conducted using animation to teach three subjects Mathematics, Language and Science; and students’ performance was compared and analyzed using fuzzy statistical tools.
Integrated Area-power Optimal State Assignment
Akhilesh Tyagi
VLSI Design , 2001, DOI: 10.1155/2001/39405
Abstract: This paper presents a state assignment algorithm with the objective of lower energy along with area comparable to the area-targeting state assignments such as JEDI. The underlying framework is MUSTANG's complete weighted graph with weights representing state affinity. The weight computation phase estimates the computation energy of potential common cubes using steady state probabilities for transitions. The weight computation phase also identifies a large set of potential state cliques, which are incorporated into a recursive bipartitioning based state assignment procedure. Reuse of cliques identified by the weight computation phase results in a faster and efficient state assignment. The energy targeting weights result in ≈9% lower area and 18% lower power than area targeting weights in JEDI over 29 MCNC Logic Synthesis ‘93 benchmarks. The clique based state assignment performs almost as well as the annealing based state assignment in JEDI, and takes only about half as much time.
Statistical Module Level Area and Delay Estimation
Akhilesh Tyagi
VLSI Design , 1997, DOI: 10.1155/1997/78238
Abstract:
Use and Awareness of Electronic Information Sources at IIT Roorkee, India: A Case Study Consapevolezza d'uso delle risorse elettroniche presso IIT Roorkee, India: un caso di studio
Sunil Tyagi
JLIS.it , 2011, DOI: 10.4403/jlis.it-4586
Abstract: Attraverso un questionario si studia il livello di conoscenza, da parte di soggetti quali insegnanti, ricercatori e studenti, degli Electronic Information Services (EIS) della biblioteca dell'Indian Institute of Technology di Rookee. L'India ha infatti visto un crescente interesse verso le risorse elettroniche in biblioteca, culminato nella creazione nel 2002 dell'Indian National Digital Library in Science and Technology (INDEST) Consortium. I questionari si occupano del tipo di risorse elettroniche usate dagli utenti, dell'impatto di esse sul materiale a stampa, del tipo di uso, del metodo utilizzato per la loro ricerca, degli ostacoli incontrati e della frequenza di consultazione. I risultati della ricerca mostrano un forte incremento nell'uso delle riviste online e una generale soddisfazione degli utenti verso l'offerta della biblioteca. Inoltre, le risposte ai questionari hanno evidenziato nella percezione degli utenti un incremento della considerazione delle risorse elettroniche rispetto a quelle a stampa. Le raccomandazioni per il futuro suggeriscono: politiche di abbonamento a risorse elettroniche che tengano conto delle priorità degli utenti, sviluppo di programmi didattici e di orientamento, aumento della qualità dei mezzi (Software e Hardware) per l'utilizzo delle risorse elettroniche e un incremento di strumenti del Web 2.0 (Blog, RSS feed, ecc.) ai fini della promozione di quest'ambito della biblioteca. Lo studio dovrebbe inoltre essere esteso ad un campione più vasto e ad altre Università e organizzazioni, al fine di identificare più specificamente gli ostacoli al consapevole utilizzo delle risorse elettroniche e i possibili mezzi per incoraggiare gli utenti a sfruttare le piene potenzialità del sistema. While a large number of studies have measured the use of electronic journals and databases and have surveyed users, few studies have involved IIT Roorkee in their study. The present study tried to know the user awareness and perceptions of EIS.The survey conducted mesures use of online journals and the databases by the under graduate, postgraduate students, research scholars and faculty members of IIT Roorkee. To conduct the survey a total of 300 questionnaires were distributed to the selected sample for the year 2010-11; 283 valid samples were collected and analyzed. The result showed a growing interest in EIS among the users at IIT Roorkee, India. The survey showed that majority of respondents marked that library possessed useful online journals and databases. Awareness among the users about the availability of EIS was found highly satisf
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