Concordia University

About: Concordia University is a education organization based out in Montreal, Quebec, Canada. It is known for research contribution in the topics: Context (language use) & Control theory. The organization has 13565 authors who have published 31084 publications receiving 783525 citations. The organization is also known as: Sir George Williams University & Loyola College, Montreal.

Calculation of initial yields of single- and double-strand breaks in cell nuclei from electrons, protons and alpha particles.

Abstract: A model of the DNA and electron and ion track structure computer codes are used to model damage in the DNA by direct action. This damage is converted into single-strand breaks using the method described by Charlton and Humm (1988) in which a minimum energy deposited in a critical volume of the DNA is correlated with the production of single-strand breaks. It is then assumed that if these single-strand breaks lie on opposite strands and are separated by less than a few base pairs they produce double-strand breaks. Absolute yields of both single- and double-strand breaks expressed in breaks/Gy-dalton are calculated and compared to measured yields. Good agreement is obtained for single-strand breaks while the calculated yields for double-strand breaks are greater than those measured.

Applications of evolutionary psychology in marketing

Abstract: Evolutionary psychology is an emerging paradigm in psychological science. The current article introduces this framework to marketing scholars and presents evidence for its increasing acceptance within the social science community. As a result, a case is made for the application of evolutionary psychology to marketing, and especially consumer behavior. Application of the evolutionary framework in studying gender-related consumption behavior is illustrated by comparing the evolutionary predictions with results obtained from previous studies, by supporting these predictions with market-level consumption data, and by proposing new hypotheses based on this framework. Also discussed are the potential applications of evolutionary psychology to other consumption-related phenomena like evaluation of endorser attractiveness in advertising, biologically driven consumption choices among women, consumer-experienced emotions in service encounters, and consumption choices as inclusive fitness maximization rather than utility maximization. 2000 John Wiley & Sons, Inc.

An Exploratory Study on Self-Admitted Technical Debt

Abstract: Throughout a software development life cycle, developers knowingly commit code that is either incomplete, requires rework, produces errors, or is a temporary workaround. Such incomplete or temporary workarounds are commonly referred to as 'technical debt'. Our experience indicates that self-admitted technical debt is common in software projects and may negatively impact software maintenance, however, to date very little is known about them. Therefore, in this paper, we use source-code comments in four large open source software projects-Eclipse, Chromium OS, Apache HTTP Server, and ArgoUML to identify self-admitted technical debt. Using the identified technical debt, we study 1) the amount of self-admitted technical debt found in these projects, 2) why this self-admitted technical debt was introduced into the software projects and 3) how likely is the self-admitted technical debt to be removed after their introduction. We find that the amount of self-admitted technical debt exists in 2.4% -- 31% of the files. Furthermore, we find that developers with higher experience tend to introduce most of the self-admitted technical debt and that time pressures and complexity of the code do not correlate with the amount of self-admitted technical debt. Lastly, although self-admitted technical debt is meant to be addressed or removed in the future, only between 26.3% -- 63.5% of self-admitted technical debt gets removed from projects after introduction.