Veermata Jijabai Technological Institute VJTI


Veermata Jijabai Technological Institute VJTI

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Patil S.P.,Veermata Jijabai Technological Institute VJTI | Sangle K.K.,Veermata Jijabai Technological Institute VJTI
Journal of Structural Engineering (India) | Year: 2016

The low tensile strength and limited ductility, the unavoidable deficiency, of concrete can be overcome by the addition of fibres. In this research, an attempt was made to study the effects of flyash and steel fibers on shear, flexural and torsional strength of high strength prestressed concrete and steel fibre prestressed concrete beam specimens. To study the shear, flexural, pure torsion and combined bending-torsion strength behavior, the total 36 beam specimens of size 140mm x140mm x1500mm were castincluding 12 plain prestressed concrete beam specimens with 20% fly ash replacing to cement by its weight and 24 beam specimens by adding 20% fly ash replacing cement by its weight with 1.5% steel fiber by weight of concrete. A primary finding emerging from the experimental program was that the placement of fibers, increased load carrying capacity of high strength fibre reinforced prestressed concrete beam. Steel fibres enhanced ductility, shear, flexural and torsional shear strength. All specimens were tested for single, double point loading, pure torsion, combined bending-torsion after 28 days. Deflections were measured. Experimental, analytical results were compared. © 2016, Structural Engineering Research Centre. All rights reserved.

Saini H.S.,Veermata Jijabai Technological Institute VJTI | Daruwala R.D.,Veermata Jijabai Technological Institute VJTI
Proceedings - 2nd International Conference on Computing, Communication, Control and Automation, ICCUBEA 2016 | Year: 2016

Human Machine Interface (HMI) provides an user interface to humans for interacting with machines. Advancement of Internet of Things (IOT) in HMI technology allows user to have remote interaction with machines in industries. In this paper we propose x86-based embedded processor (Intel Galileo) for development of HMI along with IOT support for Furnace Temperature Control System. The communication between HMI and Field devices is done using Modbus TCP/IP fieldbus protocol. The onfield realtime information like temperature data, valve status can be monitored and controlled using both remote IOT client and local HMI display.

Patil N.T.,Veermata Jijabai Technological Institute VJTI | Borkar S.P.,Veermata Jijabai Technological Institute VJTI | Weidner-Bohnenberger S.,RIETER Machine Works Ltd | Schnell M.,RIETER Machine Works Ltd
Journal of the Textile Association | Year: 2017

Today Ring, Rotor and Air-jet spinning system are commercially used for yarn production. Each spinning technology creates a typical yarn structure. This yarn structure determines the characteristics of the yarn itself, the characteristics in downstream processing and finally of the subsequent textile product. Textile fabrics with the softest touch can be undoubtedly produced from combed ring yarn. In order to manufacture a soft rotor yarn, the twist factor must be set low and supportive measures need to be undertaken in textile finishing. Rotor spinning has a great potential to reduce the twist factor, which is the basic prerequisite for the production of knitted fabric with a soft touch; by support of a new spin box generation and its components. Similarly the air-jet spinning system is now moving from 100% CV into new applications like CO blends and 100% CO combed for knitting. The challenge is to compete the softness of a conventional ring yarn. The main objective of this study is to compare the effect of twist level, spinning components, process parameters on yarn properties such as yarn packing density which will support in improving the fabric hand for Rotor and Air-jet yarn.The other objective of this study is to check the impact on strength and elongation due to reducing the twist. © 2017, Textile Association (India). All rights reserved.

Bhosale S.,College of Engineering, Pune | Daruwala R.,Veermata Jijabai Technological Institute VJTI
KSII Transactions on Internet and Information Systems | Year: 2014

Multi-criteria decision making (MCDM) algorithms play an important role in ensuring quality of service in an integrated HetNets (Heterogeneous Networks). The primary objective of this paper is to develop a multi-criteria vertical handoff decision algorithm (VHDA) for best access network selection in an integrated Wireless Local Area Network (WLAN)/ Universal Mobile Telecommunications System (UMTS)/ Worldwide Interoperability for Microwave Access (WiMAX) system. The proposed design consists of two parts, the first part is the evaluation of an Analytic Hierarchy Process (AHP) to decide the relative weights of handoff decision criteria and the second part computes the final score of the weights to rank network alternatives using Simple Additive Weighting (SAW). SAW ranks the network alternatives in a faster and simpler manner than AHP. The AHP-SAW mathematical model has been designed, evaluated and simulated for streaming video type of traffic. For other traffic type, such as conversational, background and interactive, only simulation results have been discussed and presented in brief. Simulation results reveal that the hierarchical modelling and computing provides optimum solution for access network selection in an integrated environment as obtained results prove to be an acceptable solution to what could be expected in real life scenarios. © 2014 KSII.

Wasnik I.,Veermata Jijabai Technological Institute VJTI | Sawlekar R.,Veermata Jijabai Technological Institute VJTI | Kazi F.,Veermata Jijabai Technological Institute VJTI | Singh N.,Veermata Jijabai Technological Institute VJTI
Proceedings of the 2013 International Conference on Advances in Computing, Communications and Informatics, ICACCI 2013 | Year: 2013

Bioinformatics has opened up interesting and challenging area for interdisciplinary research. One of the main component of research in bioinformatics and structural Biology is to model the protein folding phenomenon. Proteins are highly flexible objects, that are capable of organizing themselves into specific three dimensional structures through conformational changes called protein folding. We need a measure to express how much a molecule changes, going from one conformation to another or how two conformations differ from each other. The paper presents a method for optimal alignment of a Protein Backbone with respect to another. Two protein structures 1YRF and 1VII from the Protein Data Bank (PDB entry) of the villin headpiece subdomain are considered for analysis. Kabsch Method for optimal orientation is used which consists of finding the optimal translation and rotation. The technique used minimizes the inter-molecular distance measure (Root Mean Square Deviation) RMSD. Dual quaternion is used to find the translation and the rotation is performed with optimal Quaternion for exact orientation. © 2013 IEEE.

Patil S.P.,Veermata Jijabai Technological Institute VJTI | Sangle K.K.,Veermata Jijabai Technological Institute VJTI
Journal of Building Engineering | Year: 2016

The use of steel fibres in plain concrete helps in improving the mechanical properties of concrete structure. Thus the aim of present study is to investigate the effect of steel fibres on torsional strength improvement of concrete. The research evaluates the torsional strength and combined torsional-shear-bending strength. In this study, 20% of fly ash (class-C) is added as a replacement of binder to its weight and 1.5% steel fibres by weight of concrete. Experimental results show an improvement in torsional strength, combined torsional-shear-bending strength and crack resistance of concrete by addition of steel fibres in the concrete and a decrease in the deflection. Based on the experimental results the modified coefficient of the empirical formulae has been suggested to predict the torsional strength and torsional stress of steel fibre reinforced concrete. © 2016 Elsevier Ltd. All rights reserved.

Nagare M.,Veermata Jijabai Technological Institute VJTI | Dutta P.,Indian Institute of Technology Bombay | Cheikhrouhou N.,University of Applied Sciences and Arts Western Switzerland
OPSEARCH | Year: 2016

Demand forecast is a critical determinant of order quantity under newsvendor problem (NVP) framework and warrants major revision in the event of changing circumstances or happening of some unforeseen events having potential to alter the demand. Retailers of single period products such as fashion apparels are required to pass their orders far ahead of selling seasons and apply preseason two-stage ordering procedure, where an initial order (first stage) is followed by a final confirmed order (second stage). The enterprise forecasting experts may get additional information related to the occurrence of some unforeseen events that may significantly impact the initial demand estimation. In this paper, the potential impact of such events is combined using a weight factor to obtain revised demand forecasts. In this context, this paper develops inventory models under NVP framework to determine the optimal order quantity and weight factor on the basis of revised forecasts. Considering the bidirectional changes in demand, we formulate a unique objective function that operates as a profit maximization function for the positive demand adjustment and turns into a cost minimization function for the negative demand adjustment. Models developed without constraints at first instance are extended subsequently by incorporating constraints of budget limits, storage space capacity and required service level. Near closed form expressions of decision variables for four demand distributions with multiplicative demand forms are presented. The results demonstrate economic benefits of using revised demand through models developed, negative impact of constraints, and role of demand distribution entropy in determining the order size and expected profit. © 2016, Operational Research Society of India.

Das A.K.,Veermata Jijabai Technological Institute VJTI | Chandle J.O.,Veermata Jijabai Technological Institute VJTI
Proceedings of 2nd IEEE International Conference on Engineering and Technology, ICETECH 2016 | Year: 2016

Accurate estimation of noise level in digital images is of critical importance prior to application of denoising techniques in the areas of image processing and computer vision. In this paper, we propose a novel approach for estimation of noise level using: (i) Singular values of noisy image from rear end of Singular Value Decomposition (SVD) subspaces (in order to restrict the influence of image content), and (ii) Use of linear regression technique for determination of content dependent parameter which widens the application scope of the proposed method. The experimental results substantiate the robust behavior of the proposed approach over a wide range of image content and reliable estimation of noise level. © 2016 IEEE.

Prabhu S.,Veermata Jijabai Technological Institute VJTI | Daruwala R.,Veermata Jijabai Technological Institute VJTI
International Journal of High Performance Computing and Networking | Year: 2016

In the age of high-performance computing, multi-core technology is seen to bridge the gap between good system throughput and increased power dissipation. Most multi-core architectures share hardware resources between cores, leading to cross-core interference which is non-trivial in many cases. Effective shared resource management is necessary to minimise the performance variability of threads due to cross-core interference as well as optimise resource usage. Many biological models have been proposed which model interactions between species. This paper uses a mathematical model, on the lines of the competitive Lotka-Volterra model for biological population growth, which models performance of the cores in a shared-memory multi-core system. It further formulates stability conditions for the multi-core system taking into account the workload characteristics and derives partition sizes to partition the shared cache to reduce the effect of cross-core interference for different workload types. Analysis of scalability of the model is also presented. Performance evaluations reveal that the LV-based mathematical model can be used to study the effects of resource sharing between cores, calculate partition sizes and is scalable. © 2016 Inderscience Enterprises Ltd.

Waghmare S.,Veermata Jijabai Technological Institute VJTI | Nikose P.,Veermata Jijabai Technological Institute VJTI | Parab A.,Veermata Jijabai Technological Institute VJTI | Bhosale S.J.,Veermata Jijabai Technological Institute VJTI
ICECT 2011 - 2011 3rd International Conference on Electronics Computer Technology | Year: 2011

TCP is being used as a highly reliable end-to-end protocol for transporting applications. TCP was originally designed for wired links where the error rate is really low and actually assumed that packet losses are due to congestion in the network. But TCP performance in wireless networks suffers from significant throughput degradation and delays. TCP uses congestion control and avoidance algorithms which degrades end-to-end performance in wireless systems. In this paper we have analyzed the performance of TCP variants, which were designed to improve performance in wireless networks. An ns-2 based simulation analysis of TCP Tahoe, TCP Reno, TCP New Reno, TCP Sack, TCP Vegas and TCP New Jersey is done. The effect of Random Packet Loss Rate and mobility on the TCP variants was studied. Experimental studies show that TCP Vegas performs better than the other variants. © 2011 IEEE.

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