Architecture, Building and Furniture Trades: Prospectus of Courses Session 1938-39

Courses and timetables for the College of Technology, Bolton Street, Dublin 1

Architecture, Building and Furniture Trades: Prospectus of Courses Session 1939-40

Courses and timetables for the College of Technology, Bolton Street, Dublin 1

3D Puzzle Mobile Game Powered by Gyroscope And/Or Accelerometer

Treball Final de Grau en Disseny i Desenvolupament de Videojocs. Codi: VJ1241. Curs acadèmic: 2016/2017This document presents the technical report for a Final Degree Project related to the Degree in Design and Development of Video Games. The project to develop consists on a three-dimensional videogame for android devices developed with Unity3D [1]. Its singular feature consists on taking advantage of accelerometer and gyroscope controllers integrated into android devices to rotate the platforms of the game levels. Mainly, the game will use gyroscope, and if the device has not this controller, the game will be able to employ accelerometer to emulate the same behavior. Modern mobile devices have Inputs different to the rest of present devices able to run software. Inquiring into them, this project aims to develop a game for Android mobile devices that make special use of gyroscope and accelerometer sensors, in addition to the usual touch sensor. To carry it out, models and animations will be developed in 3D, 2D graphics, and especially C# programming, all original and functional through Unity3D game engine. The game will be set in the north pole, with penguins, icebergs, realistic water, etc. In the game, the player can vary the rotation of ice platforms on which there will be penguins that slide and objects with which penguins can interact. The objective is to throw them all to the water, except for the protagonist penguin. In the numerous levels that are going to be developed, the shape of the platforms will change and new penguins and objects with different characteristics will appear. Levels will be short duration, as is demanded by players of today's mobile devices. For this last statement, take as an example the famous game Angry Birds [2], whose numerous levels are around 3 minutes in length. The processing of data provided by the accelerometer and gyroscope will be such that the player will be able to select which of the two sensors to use and achieve an almost identical gaming experience. Facing also the challenge of developing on Android with Unity3D, it will be implemented a solution for the delay issue in the sound reproduction that this engine generates when compiles apps [3]. The facilities granted by the engine to save data will not be used, but code will be implemented to save data locally in encrypted form. Thanks to this, players will not be able to manually edit their save files and cheat their data. Additionally, the game will take full advantage of the particle system that the engine offers, as it is very powerful and visually attractive. Finally, it is intended to develop the feature of communicating with modern social networks, with the intention of being able to reach a viral marketing

Modeling And Simulation Of The Switched Reluctance Motor

This Paper summarizes the study conducted on the techniques used and implemented to minimize the torque ripple of the Switched reluctance Motors. These motors although offering the advantages of higher speeds, reliability and phase independence, have the limitations of the torque ripple and non-linearity in the magnetic characteristics. Thus in order to have the good understanding of the Motor, it is simulated in the MATLAB/SIMULINK environment. This paper describes details on modeling of two different configurations of Switched Reluctance Motor concentrating only on the linear model by obeying all of its characteristics. The two configurations of motors are applied with two different control techniques and the results are calculated and tabulated. Load and No load analysis are also performed to understand the behavior of motor with load. Through out the analysis, various values of turn-on and turn-off angles are selected and finally the optimum values are calculated based on the performance parameters of Average torque, speed and torque ripple. All simulations are documented through this paper including its block models and initializations performed. Finally a control technique is recommended which produces the best results with smallest torque ripple

Through Some Looking Glasses: Reflections on Economic Planning in Academies, Plazas and Corridors of Power

Paper presented at Strengthening Social Science Capacity in the Developing Areas, 10-15 October 1980, Bellagio, Italy

A general approach to temporal reasoning about action and change

Reasoning about actions and change based on common sense knowledge is one of the most important and difficult tasks in the artificial intelligence research area. A series of such tasks are identified which motivate the consideration and application of reasoning formalisms. There follows a discussion of the broad issues involved in modelling time and constructing a logical language. In general, worlds change over time. To model the dynamic world, the ability to predict what the state of the world will be after the execution of a particular sequence of actions, which take time and to explain how some given state change came about, i.e. the causality are basic requirements of any autonomous rational agent. The research work presented herein addresses some of the fundamental concepts and the relative issues in formal reasoning about actions and change. In this thesis, we employ a new time structure, which helps to deal with the so-called intermingling problem and the dividing instant problem. Also, the issue of how to treat the relationship between a time duration and its relative time entity is examined. In addition, some key terms for representing and reasoning about actions and change, such as states, situations, actions and events are formulated. Furthermore, a new formalism for reasoning about change over time is presented. It allows more flexible temporal causal relationships than do other formalisms for reasoning about causal change, such as the situation calculus and the event calculus. It includes effects that start during, immediately after, or some time after their causes, and which end before, simultaneously with, or after their causes. The presented formalism allows the expression of common-sense causal laws at high level. Also, it is shown how these laws can be used to deduce state change over time at low level. Finally, we show that the approach provided here is expressive

Geometrical Error Analysis and Correction in Robotic Grinding

The use of robots in industrial applications has been widespread in the manufacturing tasks such as welding, finishing, polishing and grinding. Most robotic grinding focus on the surface finish rather than accuracy and precision. Therefore, it is important to advance the technology of robotic machining so that more practical and competitive systems can be developed for components that have accuracy and precision requirement. This thesis focuses on improving the level of accuracy in robotic grinding which is a significant challenge in robotic applications because of the kinematic accuracy of the robot movement which is much more complex than normal CNC machine tools. Therefore, aiming to improve the robot accuracy, this work provides a novel method to define the geometrical error by using the cutting tool as a probe whilst using Acoustic Emission monitoring to modify robot commands and to detect surfaces of the workpiece. The work also includes an applicable mathematical model for compensating machining errors in relation to its geometrical position as well as applying an optimum grinding method to motivate the need of eliminating the residual error when performing abrasive grinding using the robot. The work has demonstrated an improved machining precision level from 50µm to 30µm which is controlled by considering the process influential variables, such as depth of cut, wheel speed, feed speed, dressing condition and system time constant. The recorded data and associated error reduction provide a significant evidence to support the viability of implementing a robotic system for various grinding applications, combining more quality and critical surface finishing practices, and an increased focus on the size and form of generated components. This method could provide more flexibility to help designers and manufacturers to control the final accuracy for machining a product using a robot system

Rule of Law in a State of Emergency

Is there any such thing as an absolute human right? Part of the answer to this question will be found in article 4 of the United Nations\u27 Convenant on Civil and Political Rights. The article says in part that in time of public emergency which threatens the life of the nation ... the States Parties to the present Covenant may take measures derogating from their obligation under the present Covenant to the extent strictly required by the exigencies of the situation ... Similar provisions will be found in regional conventions on the human rights