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

Despite significant advances in freight transport modeling in recent years, there is still lack of available tools for evaluating novel logistics solutions. We introduce the framework of SimMobility Freight, which is part of SimMobility, a multi-scale agent-based urban transportation simulation platform. SimMobility Freight is capable of simulating commodity contracts, logistics and vehicle operation planning and parking decisions in a fully-disaggregate manner. This allows us to evaluate alternative logistics solutions and measure their impacts. To illustrate its capability, we conduct an analysis of delivery time window regulations, assessing the policy impacts. © 2020 Elsevier Ltd

World University root node

Department of Civil Engineering

Transportation Research Part E: Logistics and Transportation Review

SimMobility Freight: An agent-based urban freight simulator for evaluating logistics solutions

The analysis of SCE (specific cutting energy) is vital for determining the machining efficiency. Conventionally, the machining forces are used to determine SCE, which is quantified as the energy that is consumed to remove unit volume of material. To correlate the micro-mechanics of material deformation and small-scale material removal in machining, in this research paper, the SCE has been modelled with consideration of shearing mechanism. While developing the model, small scale material indentation and deformation phenomena have been correlated with complex tool-work interaction behaviour in micro machining. The experiment was conducted for validation of the model for different light-weight materials i.e. Al alloy and Cu alloy. The investigation was done through the analysis of cutting forces and the visual examination of microchip morphology. It was found that the nonlinear increase and sharp fall of specific shearing energy (UShe) occur owing to the variations of the material removal mechanism. This is especially valid for lower values of UCT (undeformed chip thickness). © 2020 Elsevier B.V.

Department of Mechanical Engineering

Journal of Materials Processing Technology

Investigation of the specific cutting energy and its effect in shearing dominant precision micro cutting

For a Boolean function f:{0,1}n→{0,1} computed by a Boolean circuit C over a finite basis B, the energy complexity of C (denoted by ECB(C)) is the maximum over all inputs {0,1}n of the number gates of the circuit C (excluding the inputs) that output a one. Energy Complexity of a Boolean function over a finite basis B denoted by ECB(f)=defminC⁡ECB(C) where C is a Boolean circuit over B computing f. We study the case when B={∧2,∨2,¬}, the standard Boolean basis. It is known that any Boolean function can be computed by a circuit (with potentially large size) with an energy of at most 3n(1+ϵ(n)) for a small ϵ(n) (which we observe is improvable to 3n−1). We show several new results and connections between energy complexity and other well-studied parameters of Boolean functions. • For all Boolean functions f, EC(f)≤O(DT(f)3) where DT(f) is the optimal decision tree depth of f. • We define a parameter positive sensitivity (denoted by psens), a quantity that is smaller than sensitivity (Cook et al. 1986, [3]) and defined in a similar way, and show that for any Boolean circuit C computing a Boolean function f, EC(C)≥psens(f)/3. • For a monotone function f, we show that EC(f)=Ω(KW+(f)) where KW+(f) is the cost of monotone Karchmer-Wigderson game of f. • Restricting the above notion of energy complexity to Boolean formulas, we show EC(F)=Ω(L(F)−Depth(F)) where L(F) is the size and Depth(F) is the depth of a formula F. © 2020 Elsevier B.V.

Department of Computer Science and Engineering

Fulltext

Theoretical Computer Science

New bounds for energy complexity of Boolean functions

Let (R, m) be a local (Noetherian) ring of dimension d and let M be a ﬁnite length R-module with free resolution G•. De Stefani, Huneke, and Núñez-Betancourt explored two questions about the properties of resolutions of M. First, in characteristic p &gt; 0, what vanishing conditions on the Frobenius Betti numbers, βiF (M, R) := lime→∞ λ(Hi(Fe(G•)))/ped, force pdR M &lt; ∞? Second, if pdR M = ∞, does this force d+ 2nd or higher syzygies of M to have inﬁnite length? For the ﬁrst question, they showed, under rather restrictive hypotheses, that d + 1 consecutive vanishing Frobenius Betti numbers force pdR M &lt; ∞, and when d = 1 and R is CM then one vanishing Frobenius Betti number suﬃces. Using properties of stably phantom homology, we show that these results hold in general, i.e., d+1 consecutive vanishing Frobenius Betti numbers force pdR M &lt; ∞, and, under the hypothesis that R is CM, d consecutive vanishing Frobenius Betti numbers suﬃce. For the second question, they obtain very interesting results when d = 1. In particular, no third syzygy of M can have ﬁnite length. Their main tool is, if d = 1, to show that if the syzygy has a ﬁnite length, then it is an alternating sum of lengths of Tors. We are able to prove this fact for rings of arbitrary dimension, which allows us to show that if d = 2, no third syzygy of M can be of ﬁnite length! We also are able to show that the question has a positive answer if the dimension of the socle of Hm0 (R) is large relative to the rest of the module, generalizing the case of Buchsbaum rings. © 2020 American Mathematical Society

Department of Mathematics

Proceedings of the American Mathematical Society

Frobenius betti numbers and syzygies of finite length modules

Let J⊂I be ideals in a formally equidimensional local ring with λ(I/J)&lt;∞. Rees proved that λ(In/Jn) is a polynomial P(I/J)(X) in n of degree at most dim R and J is a reduction of I if and only if deg⁡P(I/J)(X)≤dimR−1. We extend this result for all Noetherian filtrations of ideals in a formally equidimensional local ring and for (not necessarily Noetherian) filtrations of ideals in analytically irreducible rings. We provide certain classes of ideals such that deg⁡P(I/J) achieves its maximal degree. On the other hand, for ideals J⊂I in a formally equidimensional local ring, we consider the multiplicity function e(In/Jn) which is a polynomial in n for all large n. We explicitly determine the deg⁡e(In/Jn) in some special cases. For an ideal J of analytic deviation one, we give characterization of reductions in terms of deg⁡e(In/Jn) under some additional conditions. © 2019 Elsevier B.V.

Journal of Pure and Applied Algebra

Rees' theorem for filtrations, multiplicity function and reduction criteria

Department of Humanities and Social Sciences

IIT HYDERABAD

Interrogating ‘Care’,‘Chronicity’and Expansion of Patienthood: An Ethnographic Study of Community Mental Health in Contemporary India

Medical Anthropology

Task-shifting in community mental health in Kerala: Tensions and ruptures

Cryogenics

Prediction of vapour-liquid equilibria of neon-nitrogen, neon-oxygen and neon-argon mixtures used in JT refrigerators

This work focuses on the dynamic modelling and motion control scheme of a parallel manipulator which has three legs of prismatic-revolute-revolute-revolute joint setup. In each of the legs, the prismatic (P)-joint is active and the rotary (R)-joints are passive. The three legs further join into an end-effector in a right-angled triangle shape. The Euler-Lagrangian approach is followed to achieve the dynamics of the manipulator. The formulations are detailed and simulated. This paper also presents an augmented proportional-derivative (PD) controller along with gravity compensation for the motion control. This control method transforms the closed-loop dynamics of the manipulator into decoupled, and thus it becomes easier to quantify the motion performance. The trajectory tracking performance and its accompanying errors are also discussed. © 2020, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.

Mechanisms and Machine Science

Dynamics and motion control of a three degree of freedom 3-prrr parallel manipulator

The article describes the application of optimization algorithms for solving the problem of determining the workspace of a relative mechanism device, which includes a planar 3-RPS mechanism and a tripod module. Approximation sets of individual modules are used to approximate its workspace in the moving coordinate system. The considered method of approximating a solution set of nonlinear inequalities based on the concept of the non-uniform coverings, describes constraints on the robot geometric parameters. The exterior and interior approximations of the 3-RPS mechanism are obtained. Similarly, an approximation of the restrictions for the tripod module in the moving platform coordinate system is obtained. The constraints with a given accuracy are transferred to the coordinate system of the output using a three-dimensional binary array approximating the workspace. The workspace of the relative mechanism device was obtained on the basis of these results, taking into account the relative manipulation of modules and restrictions on the workpiece geometric parameters. Moving coordinate system is located in the center of the planar 3-RPS mechanism platform. © 2020, Springer Nature Switzerland AG.