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.

Photocatalytic oxidation technology for indoor environment air purification: The state-of-the-art

Abstract: Inevitable presence of volatile organic compounds (VOCs) in indoor environment and their adverse impact on human health and productivity have encouraged the development of various technologies for air pollution remediation. Among these technologies, photocatalytic oxidation (PCO) is regarded as one of the most promising methods and has been the focus of many research works in the last two decades. Titanium dioxide (TiO 2 ) is by far the most investigated photocatalyst for photocatalytic degradation of gaseous VOCs. This review article is intended to provide a comprehensive overview of the application of commercial TiO 2 photocatalysts for removal of VOCs in air. First, the fundamentals of photocatalytic oxidation are briefly discussed and common TiO 2 -based photocatalysts are introduced. Then, the relations between the characteristics of photocatalysts (e.g. crystallinity, surface area and surface chemistry) and photocatalytic activity as well as the influence of key operating parameters on PCO processes are investigated. Afterwards, the reaction mechanisms and identified reaction intermediates/by-products for the most prevalent VOC families are reviewed. Finally, the paper discusses the deactivation of photocatalysts during PCO processes and some of the common regeneration techniques.

Efficiently Using Prefix-trees in Mining Frequent Itemsets.

Abstract: Efficient algorithms for mining frequent itemsets are crucial for mining association rules. Methods for mining frequent itemsets and for iceberg data cube computation have been implemented using a prefix-tree structure, known as an FP-tree, for storing compressed information about frequent itemsets. Numerous experimental results have demonstrated that these algorithms perform extremely well. In this paper we present a novel array-based technique that greatly reduces the need to traverse FP-trees, thus obtaining significantly improved performance for FPtree based algorithms. Our technique works especially well for sparse datasets. Furthermore, we present new algorithms for a number of common data mining problems. Our algorithms use the FP-tree data structure in combination with our array technique efficiently, and incorporates various optimization techniques. We also present experimental results which show that our methods outperform not only the existing methods that use the FP-tree structure, but also all existing available algorithms in all the common data mining problems.

Journal article reporting standards for quantitative research in psychology: The APA Publications and Communications Board task force report.

Abstract: Following a review of extant reporting standards for scientific publication, and reviewing 10 years of experience since publication of the first set of reporting standards by the American Psychological Association (APA; APA Publications and Communications Board Working Group on Journal Article Reporting Standards, 2008), the APA Working Group on Quantitative Research Reporting Standards recommended some modifications to the original standards. Examples of modifications include division of hypotheses, analyses, and conclusions into 3 groupings (primary, secondary, and exploratory) and some changes to the section on meta-analysis. Several new modules are included that report standards for observational studies, clinical trials, longitudinal studies, replication studies, and N-of-1 studies. In addition, standards for analytic methods with unique characteristics and output (structural equation modeling and Bayesian analysis) are included. These proposals were accepted by the Publications and Communications Board of APA and supersede the standards included in the 6th edition of the Publication Manual of the American Psychological Association (APA, 2010). (PsycINFO Database Record

Speaking of Art as Embodied Imagination: A Multisensory Approach to Understanding Aesthetic Experience

Abstract: This article focuses on somatic experience—not just the process of thinking bodily but how the body informs the logic of thinking about art. We examine the links between embodiment, movement, and multisensory experience insofar as they help to elucidate the contours of art appreciation in a museum. We argue that embodiment can be identified at two levels: the phenomenological and the cognitive unconscious. At the first level, individuals are conscious of their feelings and actions while, at the second level, sensorimotor and other bodily oriented inference mechanisms inform their processes of abstract thought and reasoning. We analyze the consumption stories of 30 museum goers in order to understand how people move through museum spaces and feel, touch, hear, smell, and taste art. Further, through an analysis of metaphors and the use of conceptual blending, we tap into the participants’ unconscious minds, gleaning important embodiment processes that shape their reasoning.