HEC Montréal

About: HEC Montréal is a education organization based out in Montreal, Quebec, Canada. It is known for research contribution in the topics: Vehicle routing problem & Corporate governance. The organization has 1221 authors who have published 5708 publications receiving 196862 citations. The organization is also known as: Ecole des Hautes Etudes Commerciales de Montreal & HEC Montreal.

Music Piracy on the Web – How Effective are Anti-Piracy Arguments? Evidence from the Theory of Planned Behaviour

Abstract: This article presents the results of an experiment in which three different types of anti-piracy arguments were tested among 139 young adult consumers susceptible to engage in swapping music over the Internet: (1) stressing the negative personal consequences of pirating music, (2) stressing the negative consequences for the artists, and (3) stressing the unethical nature of this behaviour. The psychological determinants of music piracy behaviour were modeled in part with (1991) Ajzen’s theory of planned behaviour. The results show that the intention to swap music on-line depended on one’s attitude toward music piracy, one’s perception that important others want that this behaviour be performed, and one’s perceived competency in doing so. In addition, having swapped music on-line in the past had a strong influence on one’s intention to do it again. Contrary to expectations, the anti-piracy arguments had no significant impact on the behavioural dynamics underlying on-line music piracy.

New Knowledge Products As Bricolage: Metaphors and Scripts in Organizational Theory

Abstract: We argue that three epistemic scripts of knowledge production—evolution, differentiation, and bricolage—underpin the production—that is, the conception and the presentation—of new organizational theories. Bricolage of concepts, empirical material, and metaphors enables the conception of new theories, whereas evolution and differentiation, carrying higher academic legitimacy, predominate in theory presentation. We develop an integrative model and provide an illustration from organizational institutionalism to delineate how metaphors and scripts influence organizational theory production.

Intermittency and the value of renewable energy

Abstract: A key problem with solar energy is intermittency: solar generators produce only when the sun is shining, adding to social costs and requiring electricity system operators to reoptimize key decisions. We develop a method to quantify the economic value of large-scale renewable energy. We estimate the model for southeastern Arizona. Not accounting for offset carbon dioxide, we find social costs of $138.40 per megawatt hour for 20 percent solar generation, of which unforecastable intermittency accounts for $6.10 and intermittency overall for $46.00. With solar installation costs of $1.52 per watt and carbon dioxide social costs of $39.00 per ton, 20 percent solar would be welfare neutral.

Exact Combinatorial Optimization with Graph Convolutional Neural Networks

Abstract: Combinatorial optimization problems are typically tackled by the branch-and-bound paradigm. We propose a new graph convolutional neural network model for learning branch-and-bound variable selection policies, which leverages the natural variable-constraint bipartite graph representation of mixed-integer linear programs. We train our model via imitation learning from the strong branching expert rule, and demonstrate on a series of hard problems that our approach produces policies that improve upon state-of-the-art machine-learning methods for branching and generalize to instances significantly larger than seen during training. Moreover, we improve for the first time over expert-designed branching rules implemented in a state-of-the-art solver on large problems. Code for reproducing all the experiments can be found at https://github.com/ds4dm/learn2branch.

From Field Notes, to Transcripts, to Tape Recordings: Evolution or Combination?

Abstract: For researchers doing qualitative research, interviews are a commonly used method Data collected through interviews can be recorded through field notes, transcripts, or tape recordings In the literature, there is a debate regarding which of these recording methods should be used There are issues of reliability, cost (time and money), loss of data, among others Technology plays a pivotal role in this debate Indeed, new technologies (eg, direct coding) are often seen as potential replacements for older technologies (eg, transcripts), which leads to a debate that is based on an evolution narrative (from field notes, to transcripts, to working from tape recordings) This article argues that a combination narrative should be considered where combination is better than substitution Moreover, combining the advantages of field notes, transcripts, and working from tape recordings without accumulating each method’s disadvantages is possible because of new technology To support this argument, two technological tools (OneNote and Smartpen) are presented as a way to increase the effectiveness, efficiency, and economy of qualitative data management