Abstract: The main objective of this work is to analyze the brushless DC (BLDC) motor drive system with input shaping using classical control theory. In this paper, different values of damping ratio are used to understand the generalized drive performance. The transient response of the BLDC motor drive system is analyzed using time response analysis. The dynamic behaviour and steady state perfo...

iSChannel is an excellent student initiative that spotlights the academic work of members of the LSE-IS community. The editors have worked hard to prepare the inaugural issue, and its quality demonstrates the high-level of academic work to be found among IS students at the London School of Economics. It is important to raise the visibility of student work not only to understand IS issues more f...

The goal of Mike Levy and Glenn Stockwell's CALL Dimensions: Options and Issues in Computer-Assisted Language Learning is to build a detailed picture of modern-day computer-assisted language learning (CALL) for language teachers, researchers, and materials designers and evaluators. To begin their discussion on CALL, Levy and Stockwell identified a number of keyword descriptors, called "CALL dim...

PROVIDENCE – When Brown alumnus Dr. Richard G. Ellenbogen, MD’83, was a second-year medical student, he found himself bored and proffered his resignation letter to then-Dean Stanley M. Aronson, MD. At this year’s Brown commencement weekend, Dr. Ellenbogen, who delivered the Charles O. Cooke, MD, Distinguished Visiting Lectureship, recalled the incident. “The Silver Fox put the letter aside with...

Visual attention has been classically described as a spotlight that enhances the processing of a behaviorally relevant object. However, in many situations, humans and animals must simultaneously attend to several relevant objects separated by distracters. To account for this ability, various models of attention have been proposed including splitting of the attentional spotlight into multiple fo...

The two following problems can be solved by a reduction to a minimum-weight bipartite matching problem (or a related network flow problem): a) Floodlight illumination: We are given n infinite wedges (sectors, spotlights) that can cover the whole plane when placed at the origin. They are to be assigned to n given locations (in arbitrary order, but without rotation) such that they still cover the...

PtX technologies are one major building block of the future energy system based on renewables sources. Dimethyl ether (DME) is an important product that can be used as intermediate production CO2-neutral base chemicals. New applications lead to increase global and optimization process efficiency, especially when considering decentralized synthesis. This review article puts some spotlights recen...

Since the beginning of COVID-19 pandemic, a number federal responses have been enacted in United States to address public health crisis, as well economic fallout and inequalities caused by pandemic. A key feature globally fighting pandemic has paid sick leave, other nations successful flattening curve infections enacting emergency leave. This work explores best practices leave used during Using...

We describe a home lighting robot that uses directional spotlights to create complex lighting scenes. The robot senses its visual environment using a panoramic camera and attempts to maintain its target goal state by adjusting the positions and intensities of its lights. Users can communicate desired changes in the lighting environment through speech and gesture (e.g., "Make it brighter over th...