Memorial University Of Newfoundland Research Articles

Technology Focus: Simulation (July 2019)

Technology Focus The original realm of this Technology Focus was reservoir simulation, but the scope has been expanded to include all simulation. This is, indeed, a broad sweep, and I fear that I may not be able to do full justice to technical domains in which I am not fully conversant. Nonetheless, muddling through, I have selected three papers with reasonably broad coverage. The one I particularly like describes an open-source 3D-printing micromodel tool kit. This highlights the need to validate simulation through experimental observation, and the work provides a practical means to do so. This will be my last editorial (it has been 6 years now), and I leave you with two main thoughts, one positive and one less so. My optimistic remark concerns the advances I have observed in the field of simulation of complex reservoirs, especially fracturing of tight reservoirs. While the topic remains challenging, the advances made have been quite significant over the past 5 years. Nonetheless, in my view, we still do not possess a full understanding of oil production in unconventional fractured reservoirs. Our ability to forecast such assets remains elusive, even with copious amounts of analytics, mountains of data, and an arsenal of machine-learning tools. We still cannot ascribe the level of confidence to such assets as we wish would be possible. More fundamental experimental investigation is necessary here, and, while we are gradually increasing our understanding, the journey has some way to go. My final comment concerns buttons. Specifically, I refer to these so-called big green “simulate” buttons: the ones that entice a user to blindly “press it, and for-get it” (with apologies to Ron Popeil). Well-crafted, user-experience-optimized, appealingly designed interfaces are now standard. Nothing new in that. Nonetheless, I cannot help but feel that, rather than assisting the engineer, such interfaces form a metaphorical barrier between the user and the simulation engine. I am of the generation that was quite happy navigating large keyword-driven ASCII files with the “vi” editor (remember that?). While these were awkward, slow, and often excruciatingly painful to operate, being forced to work directly with keywords and ASCII files yields one very significant advantage: an unavoidable and direct connection with the data. One had no choice but to become acquainted with all aspects of an important keyword and its input requirements. This ensured consistency of data input and facilitated a closer bond between user and simulator (greater transparency of what was going on under the hood). Being unashamedly old school, I feel that “optimized user-interface (UI) dashboards” often cast a misty veil over human/machine connectedness and sometimes may even impede the pathway to understanding of simulation behavior and the solution itself. My point here is this: Do not hesitate to dive into the files typically generated by these UIs and be unafraid to be old school, even if only for a few moments. The insight this affords is well worth the effort. Saying this, I am clearly showing my age, so it’s time for a fresh face to take over this editorial. I thank you for your patience over the past few years. Meanwhile, I feel an overwhelming urge to write another technical paper (that no one will read), written in TeX and coded in FORTRAN77, using my trusty “vi” editor—happiness awaits. Recommended additional reading at OnePetro: www.onepetro.org. SPE 191213 Application of Memory Formalism and Fractional Derivative in Reservoir Simulation by Mahamudul Hashan, Memorial University of Newfoundland, et al. SPE 193880 A Massively Parallel Algebraic Multiscale Solver for Reservoir Simulation on the GPU Architecture by A.M. Manea, Saudi Aramco, et al. SPE 193844 A Bayesian Sampling Framework With Seismic Priors for Data Assimilation and Uncertainty Quantification by Siavash Nejadi, University of Calgary, et al.

3‐D gravity inversion using a constrained probabilistic method: Applications to crustal‐scale models of rifted continental margins, offshore Newfoundland, eastern Canada

Acta Geologica Sinica - English EditionVolume 93, Issue S1 p. 300-301 Session 9: Emerging techniques for deep earth explorationFree Access 3-D gravity inversion using a constrained probabilistic method: Applications to crustal-scale models of rifted continental margins, offshore Newfoundland, eastern Canada Meixia Geng, Meixia Geng gengmeixia@126.com Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China Department of Earth Sciences, Memorial University of Newfoundland, St. John's, NL, CanadaSearch for more papers by this authorJ. Kim Welford, J. Kim Welford Department of Earth Sciences, Memorial University of Newfoundland, St. John's, NL, CanadaSearch for more papers by this authorColin G Farquharson, Colin G Farquharson Department of Earth Sciences, Memorial University of Newfoundland, St. John's, NL, CanadaSearch for more papers by this authorXiangyun Hu, Xiangyun Hu Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, ChinaSearch for more papers by this author Meixia Geng, Meixia Geng gengmeixia@126.com Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China Department of Earth Sciences, Memorial University of Newfoundland, St. John's, NL, CanadaSearch for more papers by this authorJ. Kim Welford, J. Kim Welford Department of Earth Sciences, Memorial University of Newfoundland, St. John's, NL, CanadaSearch for more papers by this authorColin G Farquharson, Colin G Farquharson Department of Earth Sciences, Memorial University of Newfoundland, St. John's, NL, CanadaSearch for more papers by this authorXiangyun Hu, Xiangyun Hu Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, ChinaSearch for more papers by this author First published: 31 May 2019 https://doi.org/10.1111/1755-6724.14106AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume93, IssueS1Special Issue: Abstracts of the International Symposium on Deep Earth Exploration and Practices, 24–26 Oct 2018, Beijing, ChinaMay 2019Pages 300-301 RelatedInformation

Sourcing maritime history over four decades: Crew agreement scholarship at Memorial University of Newfoundland

Providing context for this forum on a major resource for nineteenth-century merchant seafarers’ history, this article treats the temporality of the politics – historical, archival and historiographical – of the Agreements and Accounts of Crew of British imperial vessels. The exercise brings to light significant differences in the projects and practice of maritime history during the time that two generations of historians have had access to the Agreements at Memorial University. While introducing the subsequent articles by emerging scholars, it raises questions about how archives are involved in the production and communication of maritime history. It makes particular reference to the digital transformation of archives and pays attention to the social reproduction and social purpose of our discipline.

Open Source Data Logging and Data Visualization for an Isolated PV System

Monitoring the operation of an isolated photovoltaic (PV) system needs both data loggers and web transfer to collect the sensor data. The data includes the measurement of the voltage and current of the PV system and for local weather. The PV system in Memorial University of Newfoundland (MUN) is 5 m away from the window, where the weather data is collected. In reality, PV systems are approximately 25–50 m away from the weather sensors. It is, therefore, more meaningful to realize the sensor communications by wireless transfer than long cables, which can significantly reduce the cables of a large PV system with long distances among sensors. The PC receives all the sensor data and transfers hem to a web server (Thingspeak). A web server is applied to monitor the operation of the system instead of a local server when its users are far away from the location, even though the local server allows more frequent data logging (once per second). The data transformation between the PC and the web server must guarantee the stability and robustness of the program. The system alarm that reports the disconnection failure is also necessary to notify the users. This paper will first introduce the general system setup, then present each part of the system in detail, and finally, analyze the collected data.

The Use of 3D Printed Vasculature for Simulation-based Medical Education Within Interventional Radiology.

Three-dimensional (3D) printing has become a useful tool within the field of medicine as a way to produce custom anatomical models for teaching, surgical planning, and patient education. This technology is quickly becoming a key component in simulation-based medical education (SBME) to teach hands-on spatial perception and tactile feedback. Within fields such as interventional radiology (IR), this approach to SBME is also thought to be an ideal instructional method, providing an accurate and economical means to study human anatomy and vasculature. Such anatomical details can be extracted from patient-specific and anonymized CT or MRI scans for the purpose of teaching or analyzing patient-specific anatomy. There is evidence that 3D printing in IR can also optimize procedural training, so learners can rehearse procedures under fluoroscopy while receiving immediate supervisory feedback. Such training advancements in IR hold the potential to reduce procedural operating time, thus reducing the amount of time a patient is exposed to radiation and anaesthetia.Using a program evaluation approach, the purpose of this technical report is to describe the development and application of 3D-printed vasculature models within a radiology interest group to determine their efficacy as supplementary learning tools to traditional, lecture-based teaching. The study involved 30 medical students of varying years in their education, involved in the interest group at Memorial University of Newfoundland (MUN). The session was one hour in length and began with a Powerpoint presentation demonstrating the insertion of guide wires and stents using 3D-printed vasculature models. Participants had the opportunity to use the models to attempt several procedures demonstrated during the lecture. These attempts were supervised by an educational expert/facilitator.A survey was completed by all 30 undergraduate medical students and returned to the facilitators, who compiled the quantitative data to evaluate the efficacy of the 3D-printed models as an adjunct to the traditional didactic teaching within IR. The majority of feedback was positive, supporting the use of 3D=printed vasculature as an additional tactile training method for medical students within an IR academic setting. The hands-on experience provides a valuable training approach, with more opportunities for the rehearsal of high-acuity, low-occurrence (HALO) procedures performed in IR.

An Anesthesiologist in the Space Race: The Life and Career of Dr. Cloid D. Green

The space race began in the summer of 1955 when the United States and the Soviet Union pledged to launch artificial satellites. The race culminated in 1969 when the United States landed the first humans on the moon. After completing his training in anesthesiology, Dr. Cloid Green forged his career as one of the physician-scientists who played an integral role by evaluating the effects of space flight on human physiology. Family members of Dr. Green were interviewed and university and society archives, literature and periodicals were reviewed.Dr. Cloid Green received his medical training at the University of Minnesota. He earned his MD in 1946 before moving to South Dakota and working as a general practitioner. A combination of professional curiosity and the military’s request for further service led Dr. Green to complete an anesthesia residency at the University of Iowa. After training, he was assigned as the physician in charge of a bomber wing at a base near Austin, Texas, in 1957. Due to his research on the effects of high altitude on pilots, he was recruited to the Brooks Air Force Base. Dr. Green was the ranking medical official overseeing early space flights involving monkeys. After leaving the USAF, Dr. Green practiced anesthesiology at the University of Virginia before moving to Newfoundland, Canada. He became the first chair of Anesthesiology at the Memorial University of Newfoundland in 1969.Dr. Cloid Green’s career grew alongside the specialty of anesthesiology in the 1950s. His training in anesthesiology proved to be a versatile and profoundly useful skill set as the specialty became fully recognized. Dr. Green's long and fruitful career is the perfect example of the diverse opportunities afforded by anesthesiology training.

Inuit-Centred Learning in the Inuit Bachelor of Education Program

The Inuit Bachelor of Education (IBED) program in Labrador is a partnership between the Nunatsiavut Government (NG) and Memorial University of Newfoundland. It is preparing teachers to be key participants in NG’s education system. The IBED students and Sylvia Moore, the lead faculty member in the program, have based this paper on a collaborative presentation. The writers explore the tensions between the current provincial curriculum offered in the regional schools and a curriculum that is founded on Inuit history, culture, and worldview, restores the central role of the Inuit language, and is community-based as recommended in the 2011 National Strategy on Inuit Education. The students discuss four key threads of culturally relevant education: land, language, resources, and local knowledge. Moore reflects on how the IBED program incorporates these same elements to support Inuit identity and the developing pedagogy of the pre-service teachers.

Determining Student Food Insecurity at Memorial University of Newfoundland.

Our study compared the prevalence of food insecurity among 3 student groups attending Memorial University of Newfoundland (MUN): International (INT), Canadian out-of-province (OOP), and Newfoundland and Labrador (NL). Factors associated with food insecurity were also investigated. Data were collected via an online survey distributed to an estimated 10400 returning MUN students registered at a campus in St. John's, NL. Respondents were recruited through e-mails, posters, and social media. Ten questions from the Canadian Household Food Security Survey Module adult scale were asked to assess food security. Logistic regression was used to compare rates of food insecurity between the three population subgroups. Of the 971 eligible student respondents, 39.9% were food insecure (moderate or severe). After controlling for program type, parental status, living arrangement, and primary income source, OOP and INT students were 1.63 (95% CI = 1.11-2.40) and 3.04 (95% CI = 1.89-4.88) times more likely, respectively, to be food insecure than NL students. Approximately 40% of participating MUN students experienced food insecurity, a higher proportion than reported for the overall provincial population. Groups at high risk of food insecurity include INT students, students with children, and those relying on government funding as their primary income.

From pipelines to pathways: the Memorial experience in educating doctors for rural generalist practice.

This report describes the community context, concept and mission of The Faculty of Medicine at Memorial University of Newfoundland (Memorial), Canada, and its 'pathways to rural practice' approach, which includes influences at the pre-medical school, medical school experience, postgraduate residency training, and physician practice levels. Memorial's pathways to practice helped Memorial to fulfill its social accountability mandate to populate the province with highly skilled rural generalist practitioners. Programs/interventions/initiatives: The 'pathways to rural practice' include initiatives in four stages: (1) before admission to medical school; (2) during undergraduate medical training (medical degree (MD) program); (3) during postgraduate vocational residency training; and (4) after postgraduate vocational residency training. Memorial's Learners & Locations (L&L) database tracks students through these stages. The Aboriginal initiative - the MedQuest program and the admissions process that considers geographic or minority representation in terms of those selecting candidates and the candidates themselves - occurs before the student is admitted. Once a student starts Memorial's MD program, the student has ample opportunities to have rural-based experiences through pre-clerkship and clerkship, of which some take place exclusively outside of St. John's tertiary hospitals. Memorial's postgraduate (PG) Family Medicine (FM) residency (vocational) training program allows for deeper community integration and longer periods of training within the same community, which increases the likelihood of a physician choosing rural family medicine. After postgraduate training, rural physicians were given many opportunities for professional development as well as faculty development opportunities. Each of the programs and initiatives were assessed through geospatial rurality analysis of administrative data collected upon entry into and during the MD program and PG training (L&L). Among Memorial MD-graduating classes of 2011-2020, 56% spent the majority of their lives before their 18th birthday in a rural location and 44% in an urban location. As of September 2016, 23 Memorial MD students self-identified as Aboriginal, of which 2 (9%) were from an urban location and 20 (91%) were from rural locations. For Year 3 Family Medicine, graduating classes 2011 to 2019, 89% of placement weeks took place in rural communities and 8% took place in rural towns. For Memorial MD graduating classes 2011-2013 who completed Memorial Family Medicine vocational training residencies, (N=49), 100% completed some rural training. For these 49 residents (vocational trainees), the average amount of time spent in rural areas was 52 weeks out of a total average FM training time of 95 weeks. For Family Medicine residencies from July 2011 to October 2016, 29% of all placement weeks took place in rural communities and 21% of all placement weeks took place in rural towns. For 2016-2017 first-year residents, 53% of the first year training is completed in rural locations, reflecting an even greater rural experiential learning focus. Memorial's pathways approach has allowed for the comprehensive training of rural generalists for Newfoundland and Labrador and the rest of Canada and may be applicable to other settings. More challenges remain, requiring ongoing collaboration with governments, medical associations, health authorities, communities, and their physicians to help achieve reliable and feasible healthcare delivery for those living in rural and remote areas.

TEACHING AND ASSESSING LIFELONG LEARNING IN LABORATORY COURSES

Abstract – Lifelong learning might be one of the most important attributes for students pursuing a professional degree, e.g. medicine, law or engineering. From teaching and assessment point of view, it may be one of the most challenging attributes. In engineering programs, it is one of the required graduate attributes identified by the Canadian Engineering Accreditation Board (CEAB), the Accreditation Board for Engineering and Technology (ABET) in the USA and other accreditation bodies around the world. In this article we present a laboratory procedure to teach and assess lifelong learning in an engineering program. The concept of lifelong learning as defined by different accreditation bodies is discussed first and corresponding learning outcomes are developed using the revised Bloom’s taxonomy. Student activities required to achieve the outcomes are then devised. The links between pre-, in- and post-lab activities and the learning outcomes are established and the approach to run a laboratory course is designed. Finally, the assessment is planned using the so-called VALUE rubric by mapping the learning outcomes on the six dimensions of the rubric. The procedure is being implemented phase by phase in the laboratory component of a senior level course on process dynamics and control in the process engineering program at Memorial University of Newfoundland.

Evaluation of and Feedback for Academic Medicine Leaders: Developing and Implementing the Memorial Method.

Giving and receiving honest and helpful feedback for leadership development is a common challenge in all types of organizations but particularly in academic medicine. At Memorial University of Newfoundland, in 2014, a consensus emerged to develop a new method for evaluating the leadership performance of the discipline chairs, dean, and vice dean, and to provide these leaders with the evaluation results to help them improve their performance. The leaders responsible for developing and implementing this method (called the Memorial Method) decided to use a survey to obtain faculty members' perceptions about their leader's performance. Beginning in October 2014, a portion of several regular meetings of the discipline chairs with the dean and vice dean was used to develop the survey, by first discussing the broad dimensions of leadership performance, then discussing these dimensions in more detail and drafting specific questions. The resulting survey included 44 quantitative questions addressing eight leadership dimensions. In March-April 2015, the survey was administered electronically to full-time faculty members on a confidential basis. The results were compiled and reported to each discipline chair and to the dean and vice dean. In total, 144/249 faculty responded to the survey (response rate: 58%). For the various dimensions, individual chairs' mean scores ranged from 2.82 to 4.70, and overall mean scores ranged from 3.57 to 4.24. Psychometric properties of the survey suggested it was both reliable and valid. The survey will be repeated, this time with part-time as well as full-time faculty included.

The nursing process and patient teaching

Ahtisham Younas is a master of nursing student at the Memorial University of Newfoundland (Canada). The author has disclosed no financial relationships related to this article.

Equity in Author Order: A Feminist Laboratory’s Approach

Author order is crucial; it is the currency of academia. Within STEM disciplines, women and junior researchers--those who are the primary constituents of our lab-- consistently receive less credit for equal work. Our Civic Laboratory for Environmental Action Research (CLEAR) is a feminist marine science laboratory at Memorial University of Newfoundland, Canada. Recognizing that the stakes are high for CLEAR members, we have developed an approach to author order that emphasizes process and equity rather than system and equality. Our process is premised on: 1) deciding author order vy consensus; 2) valuing care work and other forms of labour that are usually left out of scientific value systems; and 3) taking intersectional social standing into account. Although CLEAR’s approach differs from others’, we take author order seriously as a compromised but dominant structure within science we must contend with. That is, rather than attempt to circumvent author order, we stay with the trouble. This article outlines this process.

Examining Medical Student Specialty Choice Through a Gender Lens: An Orientational Qualitative Study

ABSTRACTPhenomenon: A growing number of women are entering the medical workforce, yet their distribution across medical specialties remains nonuniform. We sought to describe how culture, bias, and socialization shape gendered thinking regarding specialty choice at a Canadian undergraduate medical institution. Approach: We analyzed transcripts from the Career Choices Project: 16 semistructured focus group discussions with 70 students graduating from Memorial University of Newfoundland in 2003, 2006, 2007, and 2008. The questions and prompts were designed to explore factors influencing specialty choice and did not specifically probe gender-based experiences. Focus groups were audio-recorded, transcribed, and deidentified before analysis. Analysis was inductive and guided by principles of orientational qualitative inquiry using a gender-specific lens. Findings: The pursuits of personal and professional goals, as well as contextual factors, were the major themes that influenced decision-making for women and men. Composition of these major themes varied between genders. Influence of a partner, consideration of familial commitments (both present and future), feeling a sense of connectedness with the field in question, and social accountability were described by women as important. Both genders hoped to pursue careers that would afford “flexibility” in order to balance work with their personal lives, though the construct of work–life balance differed between genders. Women did not explicitly identify gender bias or sexism as influencing factors, but their narratives suggest that these elements were at play. Insights: Our findings suggest that unlike men, women's decision-making is informed by tension between personal and professional goals, likely related to the context of gendered personal and societal expectations.

Cobalamin‐deficiency results in altered partitioning of mitochondrial one‐carbon units to formate

Vitamin B12, a co‐factor for methionine synthase, plays an important role in folate‐dependent remethylation of homocysteine. We have shown that cobalamin deficiency results in a marked elevation in plasma formate.De novo production of formate in rats was determined as described by Morrow et al (JBC 2015). Formate production from one‐carbon precursors by isolated rat liver mitochondria was measured by GC‐MS. 14CO2 production from 3‐[14C]‐serine by isolated rat liver mitochondria, expression of key genes (RT‐qPCR) and changes in protein expression (immunoblot) were also determined.Vitamin B12‐deficient rats (B12‐def) showed a 55% increase in endogenous formate production, consistent with the elevated formate levels. Formate production by isolated mitochondria from serine, dimethylglycine, and sarcosine was increased by at least 60% in B12‐def animals while 14CO2 production from serine by these mitochondria was 26% lower compared to replete controls. The expression of Mthfd1l in B12‐def animals was unchanged but the expression of Aldh1l1 and Aldh1l2 was reduced by 40–60% of that in the livers of control animals.We suggest that the partitioning of mitochondrial formyl‐THF between oxidation to CO2 (by ALDH1L2) and production of free formate (by MTHFD1L) is a key control point in one‐carbon metabolism. In B12‐def the decreased flux through ALDH1L2, in the face of a constant rate of 10‐formyl‐THF disposition can explain the increased production and increased concentration of formate. We speculate that the decreased hepatic SAM levels found in B12‐def animals may cause increased production of one‐carbon groups in the form of formate to replenish hepatic SAM. Since mitochondrial formate becomes available to the cytosol we suggest that this metabolic bifurcation may regulate the entry of formate into the cytosolic one‐carbon pool.Support or Funding InformationSupported by CIHR, RDC, and Memorial University of Newfoundland

Intrinsically disordered proteins: structural and functional dynamics

Intrinsically disordered proteins: structural and functional dynamics Stefan Wallin Department of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John’s, NL, Canada Abstract: The classical view holds that proteins fold into essentially unique three-dimensional structures before becoming biologically active. However, studies over the last several years have provided broad and convincing evidence that some proteins do not adopt a single structure and yet are fully functional. These intrinsically disordered proteins (IDPs) have been found to be highly prevalent in many genomes, including human, and play key roles in central cellular processes, such as regulation of transcription and translation, cell cycle, and cell signaling. Moreover, IDPs are overrepresented among proteins implicated in disease, including various cancers and neurodegenerative disorders. Intense efforts, by using both experimental and computational approaches, are consequently under way to uncover the molecular mechanisms that underpin the roles of IDPs in biology and disease. This review provides an introduction to the general biophysical properties of IDPs and discusses some of the recent emerging areas in IDP research, including the roles of IDPs in allosteric regulation, regulatory unfolding, and formation of intracellular membrane-less organelles. In addition, recent attempts at therapeutic targeting of IDPs by small molecules, noting in particular that IDPs represent a potentially important source of new drug targets in light of their central role in protein–protein interaction networks, are also reviewed. Keywords: natively unfolded proteins, unstructured proteins, protein folding, protein–protein interaction, cell regulation, signaling, drug development, inhibitors

Bergson(-ism) Remembered: A Roundtable

Bergson(ism) Remembered: A RoundtableCurated by Mark William Westmoreland with Brien Karas (Villanova University, USA)Featuring Jimena Canales (University of Illinois-UC, USA), Stephen Crocker (Memorial University of Newfoundland, Canada), Charlotte De Mille (The Courtauld Gallery, UK), Souleymane Bachir Diagne (Columbia University, USA), Michael Foley (University of Westminster, UK), Hisashi Fujita (Kyushu Sangyo University, Japan), Suzanne Guerlac (University of California, Berkeley, USA), Melissa McMahon (Independent Scholar, Australia), Paulina Ochoa Espejo (Haverford College, USA), and Frédéric Worms (L’École Normale Supérieure, France)

Human-Wildlife Conflict: Complexity in the Marine Environment. Edited by Megan M. Draheim, Francine Madden, Julie-Beth McCarthy, and E. C. M. Parsons. Oxford and New York: Oxford University Press. $125.00 (hardcover); $59.95 (paper). xxii + 195 p.; ill.; index. ISBN: 978-0-19-968714-5 (hc); 978-0-19-968715-2 (eb). 2015.

Previous articleNext article No AccessConservation BiologyHuman-Wildlife Conflict: Complexity in the Marine Environment. Edited by Megan M. Draheim, Francine Madden, Julie-Beth McCarthy, and E. C. M. Parsons. Oxford and New York: Oxford University Press. $125.00 (hardcover); $59.95 (paper). xxii + 195 p.; ill.; index. ISBN: 978-0-19-968714-5 (hc); 978-0-19-968715-2 (eb). 2015.Brett FavaroBrett FavaroFisheries & Marine Institute, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada Search for more articles by this author Fisheries & Marine Institute, Memorial University of Newfoundland, St. John’s, Newfoundland, CanadaPDFPDF PLUSFull Text Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by The Quarterly Review of Biology Volume 91, Number 4December 2016 Published in association with Stony Brook University Article DOIhttps://doi.org/10.1086/689505 Views: 53Total views on this site For permission to reuse, please contact [email protected]PDF download Crossref reports no articles citing this article.

President’s Report / Rapport du président

dx.doi.org/10.5623/cig2015-405 GEOMATICA 381 Good day! As we slip into Canadian winter, I am wishing everyone all the best and to enjoy the benefits of being a CIG member. At our last Council and Executive meetings, which took place coincident with the very successful UAV conference hosted by Toronto Branch under the guidance of Dr. Costas Armenakis and his enthusiastic and capable vol un teers, we had considered and vig orous discussions concerning our future directions. In order to fill vacancies in suc ces sion, Dr. Rodolphe Devillers of Memorial University of Newfoundland and Labrador agreed to step in as acting vice president. In addition, I am con tin uing as president until a suitable candidate steps forward or agrees to be nominated. We have now joined GeoAlliance Canada as a founding member, so as to continue in our role of being the lead organization supporting the science of geomatics. Furthermore, we have started to make moves to re-invigorate our links with our brethren west of Ontario whose branches are intact, but who have been dormant for a while. This brings me to the need for everyone, whether student, corporate or regular member, to do what you can to support this valuable institution of which you are an important part. Dues are the financial lifeblood of this organization and we need your support now. Since the Renaissance, it has been proven that communication between thinkers and doers is the most effective way to advance human knowledge, and geomatics is no different. What we pro vide is a valuable forum for both the formal and informal exchange of ideas in our field with learned papers, con fer ences and participation in multilateral and international organizations. We are the de facto representative for Canada at both FIG as well as ISPRS and we need to maintain our membership dues at these organizations. Lucie Lebrun-Ginn and Laura Duke have been providing stalwart support to CIG and Geomatica along with the volunteers. They need your support to continue, as there is no magic grant from the public sector. Geomatics is one of the most immediately relevant branches of science in today’s society, so in order for CIG to remain equally relevant, we are making changes to enhance the value of your membership and in return, ask for your support as soon as possible to keep this great organization going for another 130 years. Looking forward to your enthusiastic support.

Evaluation of moving ice loads on an elastic plate

Operational ice loads on the hulls of ships and offshore structures may be categorized as 'stationary' or 'moving'. Stationary loads act at one point on a hull structure, while moving loads exhibit tangential motion along the hull. In this study, the force‒displacement curve, variation of contact area and pressure distribution for moving ice loads acting on an elastic plate were determined experimentally using Memorial University of Newfoundland's moving load apparatus. Pressure measurement film – a technology that captures the interface pressure between two bodies in contact – was also employed. This paper presents the results of moving ice load experiments on an elastic plate, and compares them with previously published results for similar stationary ice load experiment results. In addition, numerical analysis of the moving ice loading condition were performed and validated against the experimental results. Together, the experiments and numerical analysis suggest that if the structure remains elastic during the ice‒structure interaction, there is negligible difference in magnitude of ice load and trend of pressure distribution between stationary and moving loading conditions.