188 research outputs found
Indian look at European classic : Vishal Bhardwaj as the adaptor of William Shakespeare's dramas
No full textArtykuł jest analizą adaptacji dramatów Williama Shakespeare'a autorstwa Vishala Bhardwaja. Autor opisuje inne adaptacje szekspirowskie pojawiające się w indyjskiej kinematografii, następnie opisuje adaptację Makbeta, Otella i Hamleta.The article is an analysis of the adaptation of dramas William Shakespeare's made by Vishal Bhardwaj. The author describes other Shakespearean adaptations appearing in the Indian cinematography. The next describes the adaptation of Macbeth, Othello and Hamlet
Stochastic stability of power systems
No full text"The utilization of synchronous machines in electric power systems as central generators and in electric drive applications as high-performance motors makes their modeling, simulation, state estimation, and analysis important in many scenarios; however, the multiple time-scale nature of the associated dynamic model, coupled with the presence of noise, complicates traditional methods.
We approach the problem in this work through dimensional reduction in nonlinear filtering. This can be understood as a combination of filtering and averaging. Recent advances in the development of particle filters are applied to the Single Machine Infinite Bus (SMIB) seven dimensional model of a synchronous generator and to the specific problem of a line contingency. Excellent system tracking coupled with significant computational savings are achieved.
In addition to system tracking, the traditional deterministic methods currently used in industry to quantify system stability are looked at from a Random Dynamical Systems (RDS) perspective. The maximal Lyapunov exponent (MLE) for a two dimensional model of a synchronous generator is calculated analytically to account for multiple white noise forcing elements. The ``real"" or colored noise case is also considered and an analytic expression derived.
Further, the presence of resonant zones and their stability for a two dimensional swing model is established. The stability of these zones is looked at from the Large Deviations perspective and is facilitated through an understanding of the Mean Exit Time. Numerical procedures are developed to calculate the Most Probable Exit Path along which; rare, long time transitions take place."Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-08-01The student, Vishal Chikkerur, accepted the attached license on 2017-07-14 at 13:01.The student, Vishal Chikkerur, submitted this Dissertation for approval on 2017-07-14 at 13:37.This Dissertation was approved for publication on 2017-07-14 at 15:32.DSpace SAF Submission Ingestion Package generated from Vireo submission #11473 on 2018-03-02 at 13:02:17Made available in DSpace on 2018-03-02T19:59:42Z (GMT). No. of bitstreams: 3
CHIKKERUR-DISSERTATION-2017.pdf: 4457803 bytes, checksum: 533598fa5554013877c545a4ae834852 (MD5)
LICENSE.txt: 4213 bytes, checksum: 0fd2f1e491ce6efd4287dfafbc7121cc (MD5)
PROQUEST_LICENSE.txt: 4559 bytes, checksum: 6fef0d6c2bf962aed12e12a05b65b5d3 (MD5)
Previous issue date: 2017-07-14Embargo set by: Seth Robbins for item 105062
Lift date: 2020-03-02T19:59:52Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 105062
Lift date: 2020-03-02T20:02:46Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 105062 on 2020-03-03T10:15:39Z
The bard in Bharadwaj: Politics of transculturation in the cinematic adaptations of Shakespeare by Vishal Bharadwaj
No full textCinema adaptations play a vital role in recreating the imaginations. When the author scripts his ideas into a text, again the text in converted into visual by the director, where he is both an author and an adopter. This paper investigates the three adaptations of Shakespeare by Vishal Bharadwaj – Maqbool, Omkara and Haider. It argues that the adaptations are transculturating Shakespeare in the Indian context and like Shakespeare was a cultural commodity propagated by British imperialism, Bollywood is a cultural commodity of the hegemonic discourse of Indian Nationhood. Thus, the paper aims to study if by transculturating Shakespeare, Bharadwaj dismantles the narrative of Indian Nationhood or if he merely reinforces it despite situating it in the uncomfortable margins that threaten it. Finally, the paper locates the struggle between the narrative of nationhood and the counter narratives on the body of the female subject and studies the leads in 10 100 Identity and Marginalisation in South Asian Literature and Media Shakespeare’s plays transculturated onto Bharadwaj’s screen in this ligh
Webis-Persuasive-Debaters-on-Reddit-CMV-2022
No full textAnalyzing Persuasion Strategies of Debaters on Social Media - Dataset
This dataset contains 3,801 debaters from Reddit, their comment, and their persuasion effectiveness. The debates originate from the subreddit Chage my View and are extracted from the Webis CMV dataset (Al Khatib et al., 2020). The dataset consists of three files in JSON Lines (.jsonl) format.
Content of the Dataset
+-- Reddit Debaters
| +-- README.md # This information + file format description
| +-- debaters.jsonl # Minimal dataset with only the (source) comment text and persuasiveness
| +-- debaters-full.jsonl # All debater-level datapoints, computed an retrieved from Reddit
| +-- comments.jsonl # All comments and comment-level datapoints for each debater
Cite
@inproceedings{wiegmann:2022,
title = "Analyzing Persuasion Strategies of Debaters on Social Media",
author = "Wiegmann, Matti and Al-Khatib, Khalid and Khanna, Vishal and Stein, Benno",
booktitle = "Proceedings of the 29th International Conference on Computational Linguistics",
month = oct,
year = "2022",
address = "Gyeongju, Republic of Korea",
publisher = "International Committee on Computational Linguistics",
Inventory and Modelling of Different Objective Functions and their Impact on Optimal Design of an Offshore Wind Farm
No full textThe design of an offshore wind farm (OWF) is multidisciplinary in nature as it involves the design of many disciplines such as the wake effects, support structure, electrical cables etc. For the optimal design of an OWF, an optimization procedure is required where all the disciplines are optimized simultaneously. The objective function plays a significant role in optimization as it expresses the main aim of the model which is to be either minimized or maximized. So far, cost of energy (COE) and annual energy production (AEP) are one of the commonly used objective functions for OWF optimization as far as the author is aware. However, there might be other objective functions that may influence the optimal design of an OWF as well. This may include maximizing the profit, minimizing the environmental impact, reducing their carbon emissions etc. Hence, this thesis investigates the overview of different objective functions and understand its impact on the optimal design of an OWF.An inventory of different objective functions is prepared, and relevant ones are selected for further study. It is observed that even though some objectives are dissimilar, they still depend on the same wind farm parameters and are therefore expected to give similar design results. From the list of objective functions, net present value (NPV) and risk management objectives are chosen for further research.The selected objective functions are then formulated in a metric for optimization. The price of electricity plays a significant role in determining the NPV. It is learnt that electricity price varies with the power supply depending on the site conditions. The electricity price is low if the supply of power is high in a region where there are many OWF’s and vice versa. Moreover, OWF investors value constant power output without any fluctuations. Hence, taking all these aspects into consideration, the electricity price in the NPV function is modelled for a constant value, wind variability and wind power predictability.The risk management function, on the other hand, aims at minimizing the uncertainty associated with an OWF project. The risk here refers to the uncertainty associated with the profit obtained from the OWF. A set of annual average wind speeds is computed using monte carlo simulations and the AEP and NPV are estimated. The mean( NPV_mean) and standard deviation ( NPV_std ) of NPV are then calculated. NPV_std represents the uncertainty in this scenario and is minimized to reduce the risk.A suitable method is then identified to deal with multiple objectives. The NPV function is maximized for maximum profit and this objective is evaluated using a single objective optimization technique. The risk management objective involves the calculation of NPV_mean and NPV_std. Both objectives are contrasting in nature as a significant reduction in NPV_std corresponds to an undesirable reduction in NPV_mean. A tradeoff between both these objectives is the best possible solution. Therefore, a multi- objective optimization technique is used, and a list of solutions is obtained by generating a pareto front.The new approach is then evaluated by implementing different case studies. It is observed that optimum rotor diameter and number of turbines for the single objective optimization technique are influenced by economic indicators such as the real interest rate and lifetime. However, they are not influenced by variation in the electricity price. Nevertheless, the NPV function is sensitive to the economic indicators and variation in the electricity price. For the multi - objective optimization technique, multi criteria analysis was used to determine the weight to the objective functions while moving along the pareto curve. It was observed that the improvement of one objective led to the deterioration of the other objective. Hence, the pareto front provides opportunities to investors to negotiate and decide on the weight they want to specify for their objectives.Electrical Engineering | Sustainable Energy Technolog
Higher order convergent fast nonlinear Fourier transform
No full textIt is demonstrated in this letter that linear multistep methods for integrating ordinary differential equations can be used to develop a family of fast forward scattering algorithms with higher orders of convergence. Excluding the cost of computing the discrete eigenvalues, the nonlinear Fourier transform (NFT) algorithm thus obtained has a complexity of O(KN+CpNlog2N) such that the error vanishes as mathop O(N-p) where p ϵ {1,2,3,4} and K is the number of eigenvalues. Such an algorithm can be potentially useful for the recently proposed NFT-based modulation methodology for optical fiber communication. The exposition considers the particular case of the backward differentiation formula (Cp=p3) and the implicit Adams method (Cp=(p-13,p>1) of which the latter proves to be the most accurate family of methods for fast NFT.Accepted Author ManuscriptTeam Raf Van de Pla
Fuzzy logic based active vibration control using novel photostrictive composites
No full textAlthough conventional actuators like piezoelectric and electrostrictive are efficient, but they required hard wiring, which contaminates the control signal and adds to the weight of the structure. The current study presents a wireless control strategy using photostrictive actuators. Owing to the fortunate combination of photovoltaic effect and converse piezoelectric effect, a photostrictive actuator can generate mechanical strain, when irradiated with light intensity. Limited choices of photostrictive material with high electromechanical coupling coefficient give the motivation to design photostrictive composites. The finite element-based formulation incorporating fuzzy logic controller is employed to study the active vibration control response of cantilever structure when equipped with photostrictive composite actuator. A parametric study has been carried out to study the influence of inclusion's volume fraction on wireless active vibration control of the structure. Control merits have been defined to compare the control performance of different composites. It is found that particulate composites are the better choice for lightweight structure and fiber composites are better if there is no weight constraint.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Transport Engineering and Logistic
Ontwerp van een houten steiger als losplaats voor een visserijhaven in Lagos, Nigeria
No full textVoor de visserijhaven van Lagos, Nigeria, waarvoor het masterplan in het deelontwerp verkeerswaterbouwkunde is opgesteld, wordt de losplaats constructief ontworpen. Uitgangspunt is geweest dat voor de constructie zoveel mogelijk gebruik wordt gemaakt van de locaal aanwezige materialen en uitvoeringscapaciteit. De arbeidsintensieve bouwwijze en het gegeven dat Azobé in Nigeria zelf groeit hebben doen besluiten voor een houten steiger te kiezen. Deze steiger is doorgerekend voornamelijk op stootbelasting als gevolg van de botsing van een merend schip. Omdat op de steiger ook de vishal is geprojecteerd mogen de versnellingen niet te groot worden. Het lijkt zinvol om de steiger te beschermen door een fenderconstructie of een apart meersysteem. Deze mogelijkheden zijn verder onderzocht, waarbij vooral de stijfheid van de onderdelen belangrijk is. Gekomen wordt tot een keuze, waarna de constructie in een tekening is vastgelegd.constructieve waterbouwkundeHydraulic EngineeringCivil Engineering and Geoscience
Algorithmic detection of eye contact in driver-pedestrian interactions
No full textPedestrians today are very vulnerable on urban roads. Clear communication between drivers and pedestrians is one way to reduce their plight. Non-verbal communication in particular plays an important role in road safety, and eye contact is a kind of non-verbal communication that has the potential to minimize on-road collisions. However, with the advent of automated vehicles, driver-pedestrian eye contact loses its meaning since there is no longer a driver. It is therefore useful to study and detect eye contact so that the knowledge obtained may be applied to automated vehicles of the future. To this end, the following research goals were adopted: (a) What is eye contact between a pedestrian and a driver in a car? How can eye contact be defined/operationalized using an algorithm?, (b) How accurate is the algorithm that operationalizes eye contact?, and (c) How is it possible to use two eye-trackers with inertial measurement units (IMUs) and pedestrian recognition in a Toyota Prius car to reconstruct the entire driver-pedestrian interaction through a 3-D animation? An indoor experiment, designed to resemble a driver-pedestrian interaction at a pedestrian crossing was conducted with 31 participants. Participants’ (pedestrians’) eyes were tracked using a Tobii Pro Glasses 2 eye-tracker and the researcher’s (driver’s) eyes were tracked using a Smart Eye Pro dx eye-tracker,both of which were synchronized. Participants’ locations were also tracked using a stereo camera equipped with pedestrian detection capabilities. Pedestrians imagined that they were on a real road and performed six types of trialswhere they stood on / crossed from the left / right side curb in front of the stationary vehicle while either making eye contact or not making eye contact with the driver. The order of the trials was randomized, and each trial consisted of 3 repetitions of a driver-pedestrian interaction. If the driver and pedestrian were looking at each other at the same time there was eye contact, otherwise there was no eye contact. Significant differences in the percentages of eye contact between pedestrians standing on the left (median duration of 0.42 s) and the right (median duration of 0.54 s) were found. No significant differences in the percentages of eye contact between pedestrians crossing from the left (median duration of 1.23 s) and the right (median duration of 1.39 s) were found. Eye contact instants within trials were algorithmically detected by finding the angle between the 3-D gaze direction vectors of the driver and the pedestrian, and comparing it to an ‘eye contact threshold’. Trials were classified as either involving eye contact or not involving eye contact based on their percentages of eye contact instants. The classification performance of the algorithm was quantified using two ground truths: (1) Imposed eye contact (in half of the trials, participants were instructed to make eye contact; in the other half, participants were instructed not to make eye contact), and (2) Manually annotated areas of interest (AOIs) from the Tobii Pro Glasses 2 showing pedestrian eye contact seeking. The algorithm’s performance was found to be fair/poor and eye contact could be detected with an accuracy of 15-30°. A 3-D reconstruction of the driver-pedestrian interaction was achieved (in the form of an animation) by using the locations, head orientations and gaze directions of the driver and the pedestrian. This thesis provides objective measurements of driver-pedestrian eye contact and demonstrates how eye contact may be detected and reconstructed for use in automated vehicles of the future.Mechanical Engineerin
Emotion and reason in ethical decision making: the effect of habituation on judgements in ethical dilemmas
No full textResearch has shown that people approach ethical dilemmas based on if it is impersonal (i.e., more rational) or more personal (i.e., more emotional) in nature (e.g., see Greene, 2014, for a review). Further, there has been an abundance of evidence found in support of a dual process theory, which delineates between these two systems. In the present work, we sought to replicate those findings and investigate a method of shifting System 1 processing to System 2 processing, specifically in moral personal dilemmas. Our results showed some inconsistent results, in that our samples did not replicate previous effects. Further, the hypothesized method of shifting from System 1 to System 2 processing did not work, as hypothesized. Understanding the way people approach and make ethical decisions can have direct implications to the professional world. Future research should investigate individual differences or non-sacrificial ethical dilemmas, to extend the current work
- …
