Introduction to sets of linear regression models – A brief review
Seemingly Unrelated Regression Equations (SURE) model is the generalization of the linear regression model. Zellner (1962) proposed the SURE model and its various associated estimators, test statistics and generalizations have generated a substantial body of literature on sets of linear regression models. Here we specify the SURE models with the assumptions and also explains different estimation methods such as Ordinary Least Squares(OLS), Generalized Least Squares (GLS), Zellner’s Feasible Generalized Least Squares (FGLS), Seemingly Unrelated Unrestricted Residual (SUUR) and Seemingly Unrelated Restricted Residual (SURR) have been explained with their properties.
Published by: B. Niranjana Rao, Dr. R. V. S. S. Nagabhushana Rao, Dr. O. Hari Babu
Author: B. Niranjana Rao
Paper ID: V4I4-1153
Paper Status: published
Published: July 2, 2018
Ergonomic design of car driver seat
Ergonomics is a branch of science drawing from physiology, engineering and psychology studies. Basic properties of vehicle interior are described. Car seat design, upholstery fabrics and passenger safety have been particularly emphasized. Textile fabrics as products providing comfort, safety and aesthetics of the vehicle interior were dealt with. Safety belts, airbags and car seat covers were especially pointed out. Specific problems related to the safety of passengers, whose anthropometric measurements deviate from the average ones, were addressed. There are the movements of drivers while driving the car. The anthropometric data are available for ergonomic design of car driver seat.
Published by: Avinash Pandit, P. V. Salunke
Author: Avinash Pandit
Paper ID: V4I4-1152
Paper Status: published
Published: July 2, 2018
A study on high volume fly-ash concrete made with steel fiber
The use of concrete containing high volume fly-ash (HVFC) has recently gained popularity as a resource efficient, durable, and sustainable option for a variety of concrete applications. If containing fibrous material which increases its structural integrity. It contains short discrete fibers that are uniformly distributed and randomly oriented. In this research two categories, HVFC with fiber mixture is prepared one containing 40% fly-ash and other 50% fly-ash. For each mixture prepare M20, M25 and M30 grade concrete with fiber. The HVFC with fiber mixture reached similar to the ordinary concrete mix, due to the pozzolanic properties of the fly-ash and the lower water-cement ratio. The setting time for the HVFC with fiber mixtures was approximately six to seven hours longer than those of ordinary concrete mix. The drying shrinkage of concrete is directly influenced by the amount and the quality of the cement paste present. It increases with an increase in the cement paste-to-aggregate ratio in the concrete mixture, and also increases with the water content of the paste. Clearly, the water-reducing property of fly ash can be advantageously used for achieving a considerable reduction in the drying shrinkage of concrete mixtures. In HVFC with fiber mixture the heat of hydration is slower that raise the temperature difference between the interior and exterior concrete should not be more that is good for avoiding thermal cracking and presence of fiber the bonding of concrete is good, so in this concrete, the cracks are not easily developed. Use of steel fiber in concrete its increase the tensile strength of concrete. Due to the high volume of fines and low water content, fresh concrete mixtures of the HVFC with fiber system are generally very cohesive and show a little or no bleeding and segregation They show excellent pump-ability and workability at slumps as low as 125 mm, however, more-then 125 mm slump values may be specified with heavily reinforced structures. Consequently, the surface finish is usually smooth pleasing and without honeycombs and bug-holes. For countries like China and India, this technology can play an important role in meeting the huge demand for infrastructure in a sustainable manner
Published by: Sumit Kumar Pandey, Ram Bharoh
Author: Sumit Kumar Pandey
Paper ID: V4I4-1149
Paper Status: published
Published: July 2, 2018
Quality improvised of bituminous mix by natural fiber
Increase in traffic load in terms of numbers of axles and high pressure from heavy vehicles resulted into traffic related pavement distresses. Modified asphalt binder is one of the approaches to improve pavement performance. Natural fibers have become a research focus for scientist & engineering. Type of natural fibers, their surface treatment & reinforcement of asphalt concrete with natural fibers are presented. Generally the review demonstrated an improvement in the fatigue life & structural resistance to distress occurring in pavement when modified. Generally a bituminous mixture is a mixture of course aggregate, fine aggregate, filler & binder. A hot Mix Asphalt is a bituminous mixture where all constituents are mixed, placed & compacted at high temperature. HMA can be Dense Grade Bitumen (DGM) known as Bituminous Concrete (BC) or gap graded known as Stone Matrix Asphalt (SMA). SMA requires stabilizing additives composed of cellulose fiber to prevent drain down of the mix. In the present study an attempt has been made to study the effects of use of a natural fiber (SISAL FIBRE as stabilizer in SMA) & as an additive in BC.For preparation of the mixes aggregate gradation has been taken as per Morth Specification, binder content, has been varied regularly from 4% to 7% & fire content varied from 0% to maximum 0.5% of total mix. Then the BC [&SMA] mixes prepared are subjected different performance test like Drain down Test, Static Indirect Tensile strength & Static creep test to evaluate the effects of fiber additions on mix performance.
Published by: Nitish, Nitin Thakur
Author: Nitish
Paper ID: V4I4-1156
Paper Status: published
Published: July 2, 2018
A review on quality improvised of bituminous mix by natural fiber
Increase in traffic load in terms of numbers of axles and high pressure from heavy vehicles resulted into traffic related pavement distresses. Modified asphalt binder is one of the approaches to improve pavement performance. Natural fibers have become a research focus for scientist & engineering. Type of natural fibers, their surface treatment & reinforcement of asphalt concrete with natural fibers are presented. Generally the review demonstrated an improvement in the fatigue life & structural resistance to distress occurring in pavement when modified. Generally a bituminous mixture is a mixture of course aggregate, fine aggregate, filler & binder. A hot Mix Asphalt is a bituminous mixture where all constituents are mixed, placed & compacted at high temperature. HMA can be Dense Grade Bitumen (DGM) known as Bituminous Concrete (BC) or gap graded known as Stone Matrix Asphalt (SMA). SMA requires stabilizing additives composed of cellulose fiber to prevent drain down of the mix. In the present study an attempt has been made to study the effects of use of a natural fiber (SISAL FIBRE as stabilizer in SMA) & as an additive in BC.For preparation of the mixes aggregate gradation has been taken as per Morth Specification, binder content, has been varied regularly from 4% to 7% & fire content varied from 0% to maximum 0.5% of total mix. Then the BC [&SMA] mixes prepared are subjected different performance test like Drain down Test, Static Indirect Tensile strength & Static creep test to evaluate the effects of fiber additions on mix performance.
Published by: Nitish, Nitin Thakur
Author: Nitish
Paper ID: V4I4-1155
Paper Status: published
Published: July 2, 2018
A regular and improved representation for signed digit constant vector multiplication
A novel improved signed digit representation procedure is proposed to overcome the two fundamental disadvantages of the current multiplier-free techniques: 1) circuit inconsistency and 2) computational redundancy. The fundamental difference between the existing multiplier free strategies and the proposed method could be a novel optimization framework based on vector decomposition. The constant vector is decomposed into two terms: a “private” matrix and a “public” vector which consist of the private operations of each individual entry and public operations shared by all of the entries, the overall data flow can be separated into two regular steps: first multiplied by the “public” vector and then by the “private” matrix. The computational complexity lessening task is then accomplished by minimizing the number of operations within the “private” matrix and the length of the “public” vector. Experimental results illustrate that the proposed strategy outflanks the existing multiplier free strategies in fewer operations and more regular circuit structure.
Published by: M. Revathy, S. Lavanya
Author: M. Revathy
Paper ID: V4I3-2013
Paper Status: published
Published: June 30, 2018
