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Title: Encouraging CS Novices to Write
Contributor(s): Becker, Katrin (author)
Date issued: 2006; 2006
Description: Article and presentation slides
Appears in collection(s): Science and Technology

Title: Death to Deadlines: A 21st-Century Look at the Use of Deadlines and Late Penalties in Programming Assignments
Contributor(s): Becker, Katrin (author)
Date issued: 2006; 2006
Description: Conference paper and presentation slides
Appears in collection(s): Science and Technology

Title: First principles of CS instruction
Contributor(s): Becker, Katrin (author)
Date issued: 2006; 2006
Description: Conference paper and presentation slides
Appears in collection(s): Science and Technology

Title: Design Paradox: Instructional Games
Contributor(s): Becker, Katrin (author)
Date issued: 2006; 2006
Description: Conference paper and presentation slides
Appears in collection(s): Science and Technology

Title: Digital games as simulations
Contributor(s): Becker, Katrin (author)
Date issued: 2006; 2006
Description: Conference paper and presentation slides
Appears in collection(s): Science and Technology

Title: Evaluating and Revising the Digital Citizenship Scale
Contributor(s): Randy Connolly (author); Janet Miller (author); Library OA fund (funder)
Date issued: 2022-08; 2022-08
Description: Measuring citizen activities in online environments is an important enterprise in fields as diverse as political science, informatics, and education. Over the past decade, a variety of scholars have proposed survey instruments for measuring digital citizenship. This study investigates the psychometric properties of one such measure, the Digital Citizenship Scale (DCS). While previous investigations of the DCS drew participants exclusively from single educational environments (college students, teachers), this study is the first with a survey population (n = 1820) that includes both students and the general public from multiple countries. Four research questions were addressed, two of...
Appears in collection(s): Science and Technology

Title: Carbon and Nutrient Stoichiometric Relationships in the Soil–Plant Systems of Disturbed Boreal Forest Peatlands within Athabasca Oil Sands Region, Canada
Contributor(s): Felix Nwaishi Mount Royal University (author); Matthew Morison (author); Janina Plach (author); Merrin Macrae (author); Richard Petrone (author); Library OA fund (funder)
Date issued: May 2022; May 2022
Description: Peatlands store carbon (C), nitrogen (N), and phosphorus (P), and the stoichiometric relationship among them may be modified by ecosystem disturbances, with major implications for boreal peatland ecosystem functions. To understand the potential impact of landscape fragmentation on peatland nutrient stoichiometry, we characterize the stoichiometric ratios of C, N and P in the soil–plant systems of disturbed boreal forest peatlands and also assessed relationships among site conditions, nutrient availability, stoichiometric ratios (C:N:P) and C storage in four sites that represent the forms of disturbed peatlands in the Athabasca oil sands region. Our results showed that nutrient...
Appears in collection(s): Science and Technology

Title: Morphology and relationships of the enigmatic stenothecoid pan-brachiopod Stenothecoides: new data from the middle Cambrian Burgess Shale Formation
Contributor(s): PAUL A. JOHNSTON (author); MICHAEL STRENG (author); Library OA fund (funder)
Date issued: 2021-12-01; 2021-12-01
Description: Bulk sampling of middle Cambrian carbonate units in the lower Burgess Shale Formation (Wuliuan) and the upper Wheeler Formation (Drumian) in Utah have yielded abundant silicified stenothecoids. Previously unreported from the Burgess Shale, stenothecoids discovered include at least two species: Stenothecoides cf. elongata and Stenothecoides rasettii sp. nov. The Utah material is assigned to Stenothecoides elongata. The new stenothecoid material confirms some earlier observations including a set of interior grooves and ridges forming nested chevrons across the midline and a finer set disposed around the interior shell margin. The chevroned grooves are interpreted here as mantle canals and...
Appears in collection(s): Science and Technology

Title: Cosolutes Modify Alkaline Phosphatase Catalysis through Osmotic Stress and Crowding Mechanisms
Contributor(s): Oksana A. Yavorska (author); Lukas Syriste (author); Chantal M. du Plessis (author); Maryam Yaqoob (author); Kyle Loogman (author); Michael Cordara (author); John K. Chik (author); Library OA fund (funder)
Date issued: September 30, 2021; September 30, 2021
Description: Examining the effects of different cosolutes on in vitro enzyme kinetics yielded glimpses into their potential behavior when functioning in their natural, complex, in vivo milieu. Viewing cosolute in vitro influences on a model enzyme, calf intestinal alkaline phosphatase, as a combination of competitive and uncompetitive behaviors provided quantitative insights into their effects on catalysis. Observed decreases in the apparent specificity constant, Kasp, caused by the presence of polyethylene glycols or betaine in the reaction solution, indicated interference with enzyme–substrate complex formation. This competitive inhibition appeared to be driven by osmotic stress. Dextran 6 K and...
Appears in collection(s): Science and Technology

Title: Blood glucose concentration is unchanged during exposure to acute normobaric hypoxia in healthy humans
Contributor(s): Jason S. Chan (author); Alexandra E. Chiew (author); Alexander N. Rimke (author); Garrick Chan (author); Zahrah H. Rampuri (author); Mackenzie D. Kozak (author); Normand G. Boulé (author); Craig D. Steinback (author); Margie H. Davenport (author); Trevor A. Day (author); Library OA Fund (funder)
Date issued: 2021-08; 2021-08
Description: Normal blood [glucose] regulation is critical to support metabolism, particularly in contexts of metabolic stressors (e.g., exercise, high altitude hypoxia). Data regarding blood [glucose] regulation in hypoxia are inconclusive. We aimed to characterize blood [glucose] over 80 min following glucose ingestion during both normoxia and acute normobaric hypoxia. In a randomized cross-over design, on two separate days, 28 healthy participants (16 females; 21.8 ± 1.6 years; BMI 22.8 ± 2.5 kg/m2) were randomly exposed to either NX (room air; fraction of inspired [FI]O2 ~0.21) or HX (FIO2 ~0.148) in a normobaric hypoxia chamber. Measured FIO2 and peripheral oxygen saturation were both lower at...
Appears in collection(s): Science and Technology

Title: FEHCA: A Fault-Tolerant Energy-Efficient Hierarchical Clustering Algorithm for Wireless Sensor Networks
Contributor(s): Ankur Choudhary (author); Santosh Kumar (author); Sharad Gupta (author); Mingwei Gong Mount Royal University (author); Aniket Mahanti (author); Library OA fund (funder)
Date issued: 2021-07-02; 2021-07-02
Description: Technological advancements have led to increased confidence in the design of large-scale wireless networks that comprise small energy constraint devices. Despite the boost in technological advancements, energy dissipation and fault tolerance are amongst the key deciding factors while designing and deploying wireless sensor networks. This paper proposes a Fault-tolerant Energy-efficient Hierarchical Clustering Algorithm (FEHCA) for wireless sensor networks (WSNs), which demonstrates energy-efficient clustering and fault-tolerant operation of cluster heads (CHs). It treats CHs as no special node but equally prone to faults as normal sensing nodes of the cluster. The proposed scheme...
Appears in collection(s): Science and Technology

Title: Towards Secure Fog Computing: A Survey on Trust Management, Privacy, Authentication, Threats and Access Control
Contributor(s): Abdullah Al-Noman Patwary (author); Ranesh Kumar Naha (author); Saurabh Garg (author); Sudheer Kumar Battula (author); Md Anwarul Kaium Patwary (author); Erfan Aghasian (author); Muhammad Bilal Amin (author); Aniket Mahanti (author); Mingwei Gong (author); Library OA fund (funder)
Date issued: 2021-05-14; 2021-05-14
Description: Fog computing is an emerging computing paradigm that has come into consideration for the deployment of Internet of Things (IoT) applications amongst researchers and technology industries over the last few years. Fog is highly distributed and consists of a wide number of autonomous end devices, which contribute to the processing. However, the variety of devices offered across different users are not audited. Hence, the security of Fog devices is a major concern that should come into consideration. Therefore, to provide the necessary security for Fog devices, there is a need to understand what the security concerns are with regards to Fog. All aspects of Fog security, which have not been...
Appears in collection(s): Science and Technology

Title: Undecidability of Q(2)
Contributor(s): Carlos Martinez-Ranero (author); Javier Utreras (author); Carlos R. Videla (author)
Date issued: March 2020; March 2020
Description: It is shown that the compositum Q(2) of all degree 2 extensions of Q has undecidable theory.
Appears in collection(s): Science and Technology

Title: U–Pb zircon geochronology and implications of Cambrian plutonism in the Ellsworth belt, Maine
Contributor(s): Jeffrey C. Pollock (author); Douglas N. Reusch (author); Gregory R. Dunning (author)
Date issued: 2021; 2021
Description: The Ellsworth belt is one of several fault-bounded blocks exposed along the southeastern coast of Maine that formed within Ganderia. New ID-TIMS U–Pb geochronological data integrated with field relationships provide additional insights into the timing of magmatism and deformation in the Ellsworth belt. The deformed Lamoine Granite was selected for U–Pb zircon analysis in order to: i) establish the protolith age; ii) provide direct temporal constraints on regional low-grade metamorphism and deformation; and iii) elucidate relationships between the Ellsworth belt and coeval rocks elsewhere in the Appalachian orogen. The Lamoine Granite was emplaced within the Ellsworth Schist at 492 ± 1.7...
Appears in collection(s): Science and Technology

Title: The Integration of a Community Service Learning Water Project in a Post-secondary Chemistry Lab
Contributor(s): Karen Ho (author); Boris S. Svidinskiy (author); Sahara R. Smith (author); Christopher C. Lovallo (author); Douglas B. Clark (author)
Date issued: 2021; 2021
Description: Community Service Learning (CSL) is an experiential learning approach that integrates community service into student projects and provides diverse learning opportunities to reduce interdisciplinary barriers. A semester-long chemistry curriculum with an integrated CSL intervention was implemented in a Canadian university to analyze the potential for engagement and positive attitudes toward chemistry as a meaningful undertaking for 14 post-secondary students in the laboratory as well as for their 400 K-12 student partners in the community. Traditionally, introductory science experiments typically involve repeating a cookbook recipe from a lab book, but this CSL project allowed the post...
Appears in collection(s): Science and Technology

Title: Case study analysis of reflective essays by chemistry post-secondary students within a lab-based community service learning water project
Contributor(s): Karen Ho (author); Sahara R. Smith (author); Catharina Venter (author); Douglas B. Clark (author)
Date issued: 2021; 2021
Description: Intentional reflection is a key component of Community Service Learning (CSL) as it guides students to integrate knowledge of theory with experience in practice. A semester-long chemistry curriculum with an integrated CSL intervention was implemented in a Canadian university to investigate how reflection in the laboratory setting enhances post-secondary students’ (n=14) conscious awareness of their learning and their attitudes toward having reflection as part of a course. In typical chemistry laboratories, students follow cookbook recipes from the lab manual and are assessed through written lab reports. These lab reports are similar to a technical report with scientific writing where the...
Appears in collection(s): Science and Technology

Title: Prior oxygenation, but not chemoreflex responsiveness, determines breath‐hold duration during voluntary apnea
Contributor(s): Christina D. Bruce (author); Emily R. Vanden Berg (author); Jamie R. Pfoh (author); Craig D. Steinback (author); Trevor A. Day (author); Library OA fund (funder)
Date issued: 2021-01; 2021-01
Description: Central and peripheral respiratory chemoreceptors are stimulated during voluntary breath holding due to chemostimuli (i.e., hypoxia and hypercapnia) accumulating at the metabolic rate. We hypothesized that voluntary breath‐hold duration (BHD) would be (a) positively related to the initial pressure of inspired oxygen prior to breath holding, and (b) negatively correlated with respiratory chemoreflex responsiveness. In 16 healthy participants, voluntary breath holds were performed under three conditions: hyperoxia (following five normal tidal breaths of 100% O2), normoxia (breathing room air), and hypoxia (following ~30‐min of 13.5%–14% inspired O2). In addition, the hypoxic ventilatory...
Appears in collection(s): Science and Technology

Title: A linear assignment based conceptual lifecycle assessment method for selecting optimal agri-industrial materials production pathway: A case study on Nigerian yam value chain
Contributor(s): Israel S. Dunmade (author); Library OA fund (funder)
Date issued: 2020; 2020
Description: Lifecycle assessment is a robust tool for comprehensive environmental impact assessment of products and processes. It provides users opportunities to identify the hotspots along the lifecycle of a system and thereby enable them to implement improvement opportunities as deemed appropriate. Production of agri-based industrial raw materials could be energy and water intensive. Such endeavour could take a heavy toll on the environment in terms of resource consumption and environmental pollution. The goal of this study was to develop an easy to use and less data intensive conceptual LCA methodology for selecting optimal pathway along a value-chain under two decision scenarios: the optimal...
Appears in collection(s): Science and Technology

Title: A sustainable approach to boosting liquid biofuels production from second generation biomass resources in West Africa
Contributor(s): Israel S. Dunmade (author); Ester Akinlabi (author); Michael Daramola (author)
Date issued: 2020; 2020
Description: West African region has abundant second generation biomass resources consisting of agricultural residues, forest resources; municipal solid wastes; and animal wastes that could be harnessed to produce liquid biofuels. A number of countries in the region have developed energy policies to foster bioenergy production. Despite the national intent expressed in various countries’ bioenergy policies, development of bioenergy facilities and liquid biofuels production from cellulosic sources in the region are essentially at the research and development stage. This study, through comprehensive reviews of various bioenergy policies, news reports, related journal articles and development reports,...
Appears in collection(s): Science and Technology

Title: Bounded Bias A-Optimal Designs for Regression Models
Contributor(s): Shawn X. Liu (author)
Date issued: 2020; 2020
Description: In 1992, Doulas Wiens suggested a problem that considers the optimal design minimizing the variance of the estimator of the parameters of regression function when the fitted model is correct, subject to a bound on the bias term which occurs when the true model is different from the assumed one. The corresponding optimal designs can be called bounded bias optimal designs. Some general results for D-optimality was obtained and published (see Liu and Wiens, 1997). In this paper, we study mainly A-optimal designs. For some special cases of bounded functions, explicitly design measures are given.
Appears in collection(s): Science and Technology