Indian Institute of Technology Palakkad&nbsp;(IIT Palakkad or IIT PKD) is a public autonomous&nbsp;engineering&nbsp;and&nbsp;research&nbsp;institute located in&nbsp;Palakkad,&nbsp;Kerala. It was&nbsp;one of the five new&nbsp;IITs&nbsp;proposed in the&nbsp;2014 Union budget of India. The campus was inaugurated on 3 August 2015. The institute has 94 faculty, 978 students, and 63 non-teaching staffs.

IT Palakkad currently offers four-year Bachelor of Technology (B.Tech) and two years MS programmes in 8 different engineering disciplines including&nbsp;Computer Science, Electrical, Mechanical, Civil among others.

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IIT Palakkad

This paper addresses a comparative analysis of a three degree of freedom (DOF) planar parallel manipulators (x, y and φ) namely 3RRR, 3PRP, 3PRR, 3PPR base, 3PPR U base and 2PRP-PPR in terms of optimal kinematic design performance and dynamic performance. Kinematic and dynamic performance analyses of these six different configurations have been done using MATLAB and Adams/View software. From the simulation results, it is observed that the 2PRP-PPR planar parallel manipulator is associated with a few favorable optimum design aspects namely singularity free workspace, isotropy and better dynamic performance in terms of energy requirement as compare to other planar parallel manipulators discussed here. © 2015 ACM.

World University root node

Department of Mechanical Engineering

ACM International Conference Proceeding Series

Comparative kinematic and dynamic performance analysis of planar parallel manipulators

Leakage characteristics, influenced by centrifugal and thermal radial growth are determined computationally for a generic rotating labyrinth seal used in the gas turbine secondary air system. Three seal locations, namely, R25, R50 and R75 are represented by means of varying the rotor radius mimicking different radial positions of the seal from the shaft axis. The combined influence of seal location and its radial (Centrifugal and thermal) growth on the leakage performance is investigated for a wide-ranging speeds from 1000 to 3000 rad/s, temperatures ranging from 200 to 450 °C and pressure ratios varying from 1.1 to 2.5, for a chosen initial clearance of 500 micron. A comparison of the effect of rotation and temperature gradient among different rotors shows that the radial growth and leakage flow rates significantly vary with the increasing radius. © 2015, The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg.

Journal of Mechanical Science and Technology

Influence of combined radial location and growth on the leakage performance of a rotating labyrinth gas turbine seal

This paper presents a coordinated motion control scheme using a disturbance observer in task space for an autonomous underwater vehicle-manipulator system (UVMS). Since, the UVMS is kinematically redundant in nature, the proposed controller permits self-motion which can be utilized to perform power efficient trajectory tracking and at the same time it also assures that the system is able to track the given desired spatial trajectory with minimal errors (despite the presence of external disturbances, system uncertainties and internal noises). The performance of the proposed coordinated motion control of the UVMS is demonstrated numerically by simulating a few underwater tasks such as payload conveyance. The system's disturbance compensation capabilities are shown and the effects of external disturbances and parameter uncertainties on the station keeping performance are also analyzed. A comparative analysis on power consumption is presented to prove the effectiveness of the proposed scheme. © 2015 Elsevier Ltd. All rights reserved.

Ocean Engineering

Coordinated motion control in task space of an autonomous underwater vehicle-manipulator system

Department of Mathematics

arXiv preprint arXiv:1511.

Goldman bracket &amp; length equivalent filling curves

Department of Civil Engineering

Young Geotechnical Engineers' Symposium on Finite Element Method

Deformation behaviour of composite barriers of clay based landfill covers

This paper seeks to find whether the shift in the production structure away from agriculture to services is only the result of the change in income status or the changing economic relations among countries has any important role to play here. It tries to find out the factors responsible for the huge expansion of the services output in recent times (1971-2009) considering three different samples (a) a group of developed and developing countries, (b) a group of developing countries, in particular and also (c) the case of India. The paper finds that along with the variables representing changing income status and technological development, policy changes related to globalization and liberalisation are also important but these policy variables can not explain the shift in the output share of the service sector in the 1990s. © 2015 by De Gruyter.

Department of Humanities and Social Sciences

Global Economy Journal

Expansion of Services Output Share: Traditional Factors or Policy Changes?

In this letter, we propose a scheme to improve the secrecy rate of cooperative networks using Analog Network Coding (ANC). ANC mixes the signals in the air; the desired signal is then separated out, from the mixed signals, at the legitimate receiver using techniques like self interference subtraction and signal nulling, thereby achieving better secrecy rates. Assuming global channel state information, memoryless adversaries and the decode-and-forward strategy, we seek to maximize the average secrecy rate between the source and the destination, subject to an overall power budget. Then, exploiting the structure of the optimization problem, we compute its optimal solution. Finally, we use numerical evaluations to compare our scheme with the conventional approaches. © 2015 IEEE.

Department of Computer Science and Engineering

IEEE Signal Processing Letters

Secure transmission in cooperative networks with weak eavesdroppers

Defines the notion of an activity model learned from sensor data and presents key algorithms that form the core of the field Activity Learning: Discovering, Recognizing and Predicting Human Behavior from Sensor Data provides an in-depth look at computational approaches to activity learning from sensor data. Each chapter is constructed to provide practical, step-by-step information on how to analyze and process sensor data. The book discusses techniques for activity learning that include the following: Discovering activity patterns that emerge from behavior-based sensor data Recognizing occurrences of predefined or discovered activities in real time Predicting the occurrences of activities The techniques covered can be applied to numerous fields, including security, telecommunications, healthcare, smart grids and home automation. An online companion site enables readers to experiment with the techniques described in the book and to adapt or enhance the techniques for their own use. With an emphasis on computational approaches, Activity Learning: Discovering, Recognizing and Predicting Human Behavior from Sensor Data provides graduate students and researchers with an algorithmic perspective to activity learning.

Department of Data Science

Activity Learning: Discovering, Recognizing and Predicting Human Behavior from Sensor Data

Activity learning: Discovering, recognizing and predicting human behavior from sensor data

Cell membrane proteins, both bound and integral, are known to preferentially accumulate at membrane locations with curvatures favorable to their shape. This is mainly due to the curvature dependent interaction between membrane proteins and their lipid environment. Here, we analyze the effects of the protein-lipid bilayer interaction energy due to mismatch between the protein shape and the principal curvatures of the surrounding bilayer. The role of different macroscopic parameters that define the interaction energy term is elucidated in relation to recent experiment in which the lateral distribution of a membrane embedded protein potassium channel KvAP is measured on a giant unilamellar lipid vesicle (reservoir) and a narrow tubular extension-a tether-kept at constant length. The dependence of the sorting ratio, defined as the ratio between the areal density of the protein on the tether and on the vesicle, on the inverse tether radius is influenced by the strength of the interaction, the intrinsic shape of the membrane embedded protein, and its abundance in the reservoir. It is described how the values of these constants can be extracted from experiments. The intrinsic principal curvatures of a protein are related to the tether radius at which the sorting ratio attains its maximum value. The estimate of the principal intrinsic curvature of the protein KvAP, obtained by comparing the experimental and theoretical sorting behavior, is consistent with the available information on its structure. © 2015 The Royal Society of Chemistry.

Fulltext

Soft Matter

Sorting of integral membrane proteins mediated by curvature-dependent protein-lipid bilayer interaction

This experimental work investigates the evaporation rates of liquids (water, ethanol) and the flow induced thereby for both pendant and sessile droplets in high density ambient gas (sulfur hexafluoride). The flow induced around an evaporating droplet is studied at ambient pressure, in a sealed glass chamber. A steel needle and aluminium substrate are used for the pendant and sessile droplet study, respectively. The evaporation rates of the droplets are measured using shadow imaging technique. Particle image velocimetry (PIV) technique is used to measure the flow induced around the evaporating droplet. This flow is observed for both water and ethanol droplets. The flow moves upward for both pendant and sessile droplets of ethanol. In case of water, the pendant droplet induces a flow which is initially upward, but with time, its direction changes downward. The evaporation-induced flow for a sessile droplet of water is however always in the upward direction. This indicates the relative role of thermal and solutal buoyancy in the genesis of the flow. Droplet surface temperatures are also measured and discussed in this paper. © 2015 International Conference on Liquid Atomization and Spray Systems. All rights reserved.