A simple test of Richter-rationality

We propose in this note a simple non-parametric test of Richter-rationality which is the basic definition of rationality used in choice functions theory. Loosely speaking, the data set is rationalizable in the Richter' sense if there exists a complete-acyclic binary relation that rationalizes the data set. Hence a data set is rationalizable in the Richter' sense if there exists a variable intervals function which rationalizes this data set. Since an acyclic binary relation is not necessary transitive then the proposed Richter-rationality test is weaker than GARP. Finally the test is performed over Mattei's data sets.GARP ; choice functions ; Richter-rationality ; variable intervals functions.

Energy Storage and Communication System

The Industrial Power and Controls Lab in Engineering East is welcoming the addition of a new lab course, EE 435. Schneider Electric sponsors this course, which seeks to teach students how to use the Modicon M580 Program Logic Controller (PLC) in various industry use cases. This project is a continuation of previous senior projects and focuses on developing a lab experiment to teach students how to utilize the M580 in an energy storage use case. More specifically, it focuses on the battery management system that oversees the units and exposes students to the various situations this system may encounter during its lifetime. Aside from the overall direction of the lab experiment and its topic focus, the project is open-ended which leaves room for self-development of a large majority of the needs and requirements. This document covers those requirements, the necessary specifications and justifications along with the history of the PLC and a more detailed background behind this senior project. This project developed a simulated battery model using Functional Block Diagrams and structured text in the PLC software. A small PCB was designed and manufactured to include a tangible component for students to interact with. Large efforts were made to make the model as accurate as possible and heavily commented to provide ease of upgrades. Additionally, time was spent developing a lab manual to guide students through the use of the simulation and hardware

Determination of hawser forces using numerical and physical models for the third set of Panama locks studies

C

A simple test of Richter-rationality

URL des Cahiers : https://halshs.archives-ouvertes.fr/CAHIERS-MSECahiers de la Maison des Sciences Economiques 2006.08 - ISSN 1624-0340We propose in this note a simple non-parametric test of Richter-rationality which is the basic definition of rationality used in choice functions theory. Loosely speaking, the data set is rationalizable in the Richter' sense if there exists a complete-acyclic binary relation that rationalizes the data set. Hence a data set is rationalizable in the Richter' sense if there exists a variable intervals function which rationalizes this data set. Since an acyclic binary relation is not necessary transitive then the proposed Richter-rationality test is weaker than GARP. Finally the test is performed over Mattei's data sets.Le présent article propose un test simple de la rationalité au sens de Richter, laquelle constitue la définition de base employée dans la théorie du choix. D'une façon générale une base de données est rationalisable au sens de Richter s'il existe une relation binaire complète et acyclique qui rationalise la base de données. Par conséquent la base de données est rationalisable au sens de Richter s'il existe une fonction à intervalles variables qui rationalise cette base de données. Dans la mesure où une relation binaire acyclique n'est pas nécessairement transitive le test proposé de la rationalité au sens de Richter est plus faible que celui de GARP. Le test est réalisé sur les données expérimentales de Mattei

The EPA P3 Program: an Opportunity for Growing Student Entrepreneurs

In this paper we will share our experiences of fostering entrepreneurial spirit through projects funded by EPA (Environmental Protection Agency) P3 (People, Prosperity, and the Planet) Program which hosts the P3 collegiate competition for designing solutions for a sustainable future. Since 2012, we have integrated the P3 competition with the capstone design course of Clean Energy Systems track in mechanical engineering as an effective educational vehicle for introducing the concept of sustainable design. Since the competition focuses on designs which have values of real world application, it is also a great opportunity to create entrepreneurial spirit. We have successfully turned a design from a capstone design prototype to a commercial product through the EPA P3 awards. Similar successful stories have been heard within this program. We will share our story in this paper with an attempt to encourage educators who are working on technologies with commercial viability to take advantage of this unique opportunity to grow more student entrepreneurs

Stress Tensor Perturbations in Conformal Field Theory

We reconsider the problem of deforming a conformal field theory to a neighboring theory which is again critical. An invariant formulation of this problem is important for understanding the underlying symmetry of string theory. We give a simple derivation of A. Sen’s recent formula for the change in the stress tensor and show that, when correctly interpreted, it is coordinate-invariant. We give the corresponding superconformal perturbation for superfield backgrounds and explain why it has no direct analog for spin-field backgrounds