We describe how the SgpDec computer algebra package can be used for composing and decomposing permutation groups and transformation semigroups hierarchically by directly constructing substructures of wreath products, the so called cascade products. transformation semigroup, permutation group, wreath product, Krohn-Rhodes Theory

The conventional wisdom that product lifetimes are shrinking has important implications for technology management and product planning. However, very limited empirical information on this topic is available. In this paper, product lifetimes are directly measured as the time between product introduction and withdrawal. Statistical analyses of desktop personal computer models introduced between 1...

Traditionally, a distinction has been drawn between software and services to detect text-based plagiarism or collusion, and products to detect such practices in computer programs. The Joint Information Services Committee (JISC) even commissioned two separate studies, the Technical Review of Plagiarism Detection Report (Bull et al, 2001) which focused on text-based assignments, and Source Code P...

A study of computer engineering tool integration using the Portable Common Tool Environment (PCTE) Public Interface Standard is presented. Over a lO-week time frame, three existing software products were encapsulated to work in the Emeraude environment, an implementation of the PCTE version 1.5 standard. The software products used were a computer-aided software engineering (CASE) design tool, a...

Nowadays, efforts in computer game development have been concerned to overcome entertainment objectives. In fact, there has been much effort aiming at finding, in Computer Science, resources to improve games in order to allow their application into education, business or politics processes. The effective introduction of these products in society requires that they are designed as accessible as ...

Dive computer validation is currently a widely discussed topic for which there is no uniform procedure for testing and validation. Many dive computer manufacturers claim that their products are personal protective equipment. However, dive computers are not listed in the directive for personal protective equipment (PPE Directive 89/686/EEC). EN13319 is one European normative that is frequently a...

Nowadays, efforts in computer game development have been concerned to overcome entertainment objectives. In fact, there has been much effort aiming at finding, in Computer Science, resources to improve games in order to allow their application into education, business or politics processes. The effective introduction of these products in society requires that they are designed as accessible as ...

A study of computer engineering tool integration using the Portable Common Tool Environment (PCTE) Public Interface Standard is presented. Over a 10-week time frame, three existing software products were encapsulated to work in the Emeraude environment, an implementation of the PCTE version 1.5 standard. The software products used were a computer-aided software engineering (CASE) design tool, a...

Peer prediction is a method to promote contributions of information by users in settings in which there is no way to verify the quality of responses. In multitask peer prediction, the reports from users across multiple tasks are used to score contributions. This paper extends the correlated agreement (CA) multi-task peer prediction mechanism (Shnayder et al. [2016]) to allow the reports from us...

The vision where living and working spaces adapt to people is becoming a reality thanks to the increased embedding of computing power into everyday objects. Ambient learning focuses on the way people adopt technology in their everyday life and how technology adapts to the environment. Ambient learning is a new area in ubiquitous computing (UC) about the different learning processes that occur b...