The Ethics of Information: Foundation to Regulate Moral Framework for Distributed Multi-Agent Systems (MAS), such as Bitcoin

, M.Sc. Thesis Sharif University of Technology Asgarinia, Hale (Author) ; Taqavi, Mostafa (Supervisor)

Abstract

Information and communications technologies have affected the human world rapidly, which challenges the facing today’s information society. Extensive use and impact of these technologies in different aspects of human life have led to an information revolution. This revolution, changes in our understanding of the human nature and physical world. The human is an information organism among the other agents which is living in the informational environment, that is called the infosphere. Moreover, the information revolution has caused to emerge of “Bitcoin”; a phenomenon that is changing economic relations. Bitcoin is a “crypto-currency” and “encrypted payment system” that relying on a...

Vibration based algorithm for crack detection in cantilever beam containing two different types of cracks

, Article Journal of Sound and Vibration ; Volume 332, Issue 24 , November , 2013 , Pages 6312-6320 ; 0022460X (ISSN) Behzad, M ; Ghadami, A ; Maghsoodi, A ; Michael Hale, J ; Sharif University of Technology

2013

Abstract

In this paper, a simple method for detection of multiple edge cracks in Euler-Bernoulli beams having two different types of cracks is presented based on energy equations. Each crack is modeled as a massless rotational spring using Linear Elastic Fracture Mechanics (LEFM) theory, and a relationship among natural frequencies, crack locations and stiffness of equivalent springs is demonstrated. In the procedure, for detection of m cracks in a beam, 3m equations and natural frequencies of healthy and cracked beam in two different directions are needed as input to the algorithm. The main accomplishment of the presented algorithm is the capability to detect the location, severity and type of each...

Initial tests on a rolling element bearing with built-in vibration sensor for condition monitoring

, Article 17th International Congress on Sound and Vibration 2010, ICSV 2010, 18 July 2010 through 22 July 2010, Cairo ; Volume 2 , 2010 , Pages 1315-1322 ; 9781617822551 (ISBN) Behzad, M ; Beheshtkar, N ; Bastami, A. R ; Hale, J. M ; Sharif University of Technology

2010

Abstract

This paper presents a novel modification to a conventional rolling element bearing that allows it to monitor its own condition, and describes some preliminary tests on a prototype. The self monitoring feature is a thick-film vibration sensor deposited in a shallow groove around the outer race of the bearing. This has the virtue of being very close to the source of the impacts that are characteristic of a damaged bearing, as well as being robust and low cost. The form of the sensor is such that the loading surfaces of the outer race are only slightly modified and the bearing can be fitted into any conventional bearing housing with only minor modification to make electrical connection to the...