81 research outputs found
Impulsive Response of Cantilever Beams
No full textTitle: Impulsive Response of Cantilever Beams, Author: Azfar Saeed, Location: ThodeThis thesis describes the analytical and experimental study of cantilever beams subjected to impulse at their tips. Tests were conducted on four beam specimens. These tests were carried out for the purpose of investigating the validity of the theory as presented in this thesis.ThesisMaster of Engineering (ME
Design analysis and synthesis of a non-conventional parallel manipulator with innovative joints
No full textThis thesis concerns a research project in which parallel kinematic manipulators consisting of different types of joints and varying number of limbs are assessed in terms of their output characteristics. To increase the orientation capability of a parallel kinematic machine, a small number of limbs is necessary lo reduce limb interference. An innovative algorithm is implemented based on physical limits of the joints and condition number calculation of inverse Jacobians. Larger workspaces are found in the cases where spherical joints are used on the lower end of the limb as compared to other joints. A three legged SPS system is selected for further ysis due to its minimum number of limbs and the use of spherical joints in order to gain maximum degree of freedom.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Cognitive Procedures and Hyperbolic Discounting
No full text"Hyperbolic discount functions are characterized by a relatively high discount rate over short horizons and a relatively low discount rate over long horizons" (Laibson 1997).We suggest two cognitive procedures where individuals perceive future utility as decreasing at a decreasing rate as a function of time.Such a perception is similar to hyperbolic discounting.The first procedure shows that individuals hyperbolically discount marginal utility from money when they follow a cognitive procedure in which they believe that their wealth might increase or decrease in each future period under the constraint of a perceived small probability that wealth will decrease below its current level.The second procedure shows that individuals hyperbolically discount expected utility from consumption when they believe that they will rationalize their actions and thus alter their utility function over time.The difference in how perceived utility changes over the short and long horizon generates the hyperbolic discounting phenomenon.We find that greater tendencies toward rationalization and greater volatility in consumption increase the hyperbolic discounting phenomenon. Although hyperbolic disc ounting is usually regarded as impulsive and irrational, Azfar (1999) and this author suggest that hyperbolic discounting may be rational in some cases.cognitive process;preferences;bias;rationality;marginalism
Incompatibility of Laws and Natural Resources: A Case Study of Land Revenue Laws and Their Implications in Federal Areas of Pakistan
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Prospects of robotics in food industry
No full textTechnological advancements in various domains have broadened the application horizon of robotics to an incredible extent. Highlighting a very recent application area, this paper presents a comprehensive review of robotics application in food industry. Robots essentially have the potential to transform the processes in food processing and handling, palletizing and packing and food serving. Therefore, recent years witnessed tremendously increased trend of robots deployment in food sector. Consequently, the aspects related with robot kinematics, dynamics, hygiene, economic efficiency, human-robot interaction, safety and protection and operation and maintenance are of critical importance and are discussed in the present review. A comparison of actual robots being used in the industry is also presented. The review reveals that the food serving sector is the new potential area in which ample research opportunities exist by integrating advancements from various technology domains. It is anticipated that wider dissemination of research developments in ‘robo-food’ will stimulate more collaborations among the research community and contribute to further developments
Creating an efficient financial system : challenges in a global economy
No full textFinancial sector development fosters economic growth and reduces poverty by widening and broadening access to finance and allocating society's savings more efficiently. The author first discusses three pillars on which sound and efficient financial systems are built: macroeconomic stability and effective and reliable contractual and informational frameworks. He then describes three different approaches to government involvement in the financial sector: the laissez-faire view, the market-failure view and the market-enabling view. Finally, the author analyzes the sequencing of financial sector reforms and discusses the benefits and challenges that emerging markets face when opening their financial systems to international capital markets.Banks&Banking Reform,Financial Intermediation,Financial Crisis Management&Restructuring,Economic Theory&Research,Insurance&Risk Mitigation
Lectures in relativistic quantum mechanics: an introductory course for postgraduates in particle physics
No full textThis book is based on a series of lectures taught by the author to all incoming first year Oxford University postgraduates in experimental particle physics. It begins by deriving the Dirac equation and incorporating the electro-magnetic interaction and calculating several bread and butter processes at tree level using the Feynman Stueckelberg approach: Mott scattering, electron-electron scattering, electron-positron scattering, Compton scattering, Bremsstrahlung and electron-positron to muon-anti-muon. The intention is for the student to become fluent in detail with all the steps leading to the calculation of these processes. Every step is motivated using the most basic arguments
Intelligent spherical joints based tri-actuated spatial parallel manipulator for precision applications
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