cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Feasibility study to derive a clinical decision rule for the investigation of alert patients suspected of having a non-traumatic subarachnoid haemorrhage.
Creators: name: Perry, Jeffrey Joseph.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2002
Subjects: subject: Health Sciences, Medicine and Surgery.

description: Context. Subarachnoid haemorrhage is a type of haemorrhagic stroke with an annual incidence of 1 per 10,000 people and accounts for 1% of emergency department visits for acute headache. Objectives. (1) Phase 0: To determine patient characteristics, association of predictor variables with subarachnoid haemorrhage, mean length of stay determined by investigation(s) performed, and an estimate of the incidence of subarachnoid haemorrhage in alert patients with headache and normal neurological examination at the Ottawa Hospital. (2) Phase 1: To develop and pre-test standardized clinical assessments in alert patients with possible subarachnoid haemorrhage and apply these standardized clinical assessments to alert patients with possible subarachnoid haemorrhage. With these clinical assessments, determine the statistical association between the clinical findings and the diagnosis of subarachnoid haemorrhage, and develop a preliminary decision rule to determine which patients require investigation to rule out subarachnoid haemorrhage. (Abstract shortened by UMI.)
Pharmaceuticals in the environment
Creators: name: Beek, Tim Aus Der
name: Weber, Frank-Andreas
name: Bergmann, Axel
Publisher: name: My University
Year: 2016
Subjects: subject: Umwelt
subject: Messungen
subject: Datenbank
subject: pharmaceuticals
subject: SAICM
subject: Strategic Approach to International Chemicals Management
subject: Chemikalien

description: In a comprehensive literature review measured environmental concentrations of human and veterinary pharmaceutical substances reported worldwide were compiled in a systematic database. Pharmaceuticals or their transformation products have been detected in the environment of 71 countries covering all five ⁠UN⁠ regions. 631 different pharmaceuticals have been found above the detection limits of the analytical methods employed. We conclude that pharmaceuticals in the environment are a global challenge calling for approaches to prevent, reduce, and manage pharmaceuticals entering the environment, such as the recently adopted new emerging policy issue under the Strategic Approach to International Chemicals Management (SAICM). An overview of strategies for action proposed in the literature is provided.
Predicting Future Seed Sourcing of Platycladus orientalis (L.) for Future Climates Using Climate Niche Models
Creators: name: Hu, Xian-Ge
name: Wang, Tongli (Forest Geneticist)
name: Liu, Si-Si
name: Jiao, Si-Qian
name: Jia, Kai-Hua
name: Zhou, Shan-Shan
name: Jin, Yuqing
name: Li, Yue
name: El-Kassaby, Yousry A.
name: Mao, Jian-Feng
Publisher: name: Multidisciplinary Digital Publishing Institute
Year: 2019

description: Climate niche modeling has been widely used to assess the impact of climate change on forest trees at the species level. However, geographically divergent tree populations are expected to respond differently to climate change. Considering intraspecific local adaptation in modeling species responses to climate change will thus improve the credibility and usefulness of climate niche models, particularly for genetic resources management. In this study, we used five Platycladus orientalis (L.) seed zones (Northwestern; Northern; Central; Southern; and Subtropical) covering the entire species range in China. A climate niche model was developed and used to project the suitable climatic conditions for each of the five seed zones for current and various future climate scenarios (Representative Concentration Pathways: RCP2.6, RCP4.5, RCP6.0, and RCP8.5). Our results indicated that the Subtropical seed zone would show consistent reduction for all climate change scenarios. The remaining seed zones, however, would experience various degrees of expansion in suitable habitat relative to their current geographic distributions. Most of the seed zones would gain suitable habitats at their northern distribution margins and higher latitudes. Thus, we recommend adjusting the current forest management strategies to mitigate the negative impacts of climate change.
Effect of Omega-3 Fatty Acid Supplementation on Oxylipins in a Routine Clinical Setting
Creators: name: Schmöcker, Christoph
name: Zhang, Ingrid W.
name: Kiesler, Stefanie
name: Kassner, Ursula
name: Ostermann, Annika I.
name: Steinhagen-Thiessen, Elisabeth
name: Schebb, Nils H.
name: Weylandt, Karsten-H.
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2018
Subjects: subject: omega-3 fatty acids
subject: oxylipins
subject: lipidomics
subject: lipid clinic
subject: hyperlipidemia
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::616 Krankheiten

description: Omega-6 polyunsaturated fatty acid (n-6 PUFA) is the predominant polyunsaturated fatty acid (PUFA), especially in Western diet. A high omega-6/omega-3 ratio in Western diets is implicated in the development of cardiovascular diseases and inflammatory processes. Studies in animal models and in humans have demonstrated beneficial effects of omega-3 PUFA (n-3 PUFA) in a variety of diseases, including cardiac arrhythmias and inflammatory diseases, as well as breast and colon cancer. The molecular mechanisms underlying the effects of n-3 PUFA are still not well understood. Possible mechanisms include competition between n-3 and n-6 PUFAs at the cyclooxygenase (COX) and lipoxygenase (LOX) and cytochrome P450 levels, and subsequent formation of oxylipins with specific anti-inflammatory or anti-arrhythmic effects. In this study, we report the impact of routine long-term treatment with prescription-grade n-3 PUFA (either 840 mg or 1680 mg per day) on blood cell membrane fatty acid composition, as well as plasma oxylipin patterns, in a patient population with severe hyperlipidemia and cardiovascular disease who are on standard lipid-lowering and cardioprotective medications. Lipidomics analyses were performed by LC/ESI-MS/MS. Supplementation led to a dose- dependent increase in n-3 PUFA eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in the blood cell fraction. We also observed a dose-dependent increase in EPA- and DHA-derived epoxy metabolites, whereas the effect of n-3 PUFA supplementation on LOX-dependent EPA- and DHA-derived hydroxy metabolites was less pronounced, with a tendency towards lower metabolites in subjects with higher n-3 PUFA levels. These data thus generally confirm effects of n-3 PUFA supplementation observed previously in healthy individuals. Additionally, they indicate a suppressive effect of high n-3 PUFA supplementation on the formation of LOX metabolites in the context of concomitant aspirin medication.
Stromal Hedgehog signalling is downregulated in colon cancer and its restoration restrains tumour growth
Creators: name: Gerling, Marco
name: Buller, Nike V. J. A.
name: Kirn, Leonard M.
name: Joost, Simon
name: Frings, Oliver
name: Englert, Benjamin
name: Bergstrom, Asa
name: Kuiper, Raoul V.
name: Blaas, Leander
name: Wielenga, Mattheus C. B.
name: Almer, Sven
name: Kuhl, Anja A.
name: Fredlund, Erik
name: Van Den Brink, Gijs R.
name: Toftgard, Rune
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2016
Subjects: subject: Cancer microenvironment
subject: Colon cancer
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit

description: A role for Hedgehog (Hh) signalling in the development of colorectal cancer (CRC) has been proposed. In CRC and other solid tumours, Hh ligands are upregulated; however, a specific Hh antagonist provided no benefit in a clinical trial. Here we use Hh reporter mice to show that downstream Hh activity is unexpectedly diminished in a mouse model of colitis-associated colon cancer, and that downstream Hh signalling is restricted to the stroma. Functionally, stroma-specific Hh activation in mice markedly reduces the tumour load and blocks progression of advanced neoplasms, partly via the modulation of BMP signalling and restriction of the colonic stem cell signature. By contrast, attenuated Hh signalling accelerates colonic tumourigenesis. In human CRC, downstream Hh activity is similarly reduced and canonical Hh signalling remains predominantly paracrine. Our results suggest that diminished downstream Hh signalling enhances CRC development, and that stromal Hh activation can act as a colonic tumour suppressor.
МЕСТО И РОЛЬ ИНДИВИДУАЛЬНОГО СТИЛЯ В ЯЗЫКЕ ШЕКСПИРА
Creators: name: Хожаяров, Нуриддин
Publisher: name: Zenodo
Year: 2024

description: Эпоха Шекспира имеет исключительно важное значение как период активного формирования национального литературного английского языка. Процесс становления диалектного английского языка носил длительный характер и завершился к середине, точнее, ко второй половине XVIII века. В конце XVI и начале XVII века стабильных норм в письменном языке еще не было [1, с. 104-105]. Разговорный язык эпохи Шекспира отличался большой свободой употребления слов и форм. Тем не менее, в нем уже функционировал вариант, рассматриваемый языковедами и образованными кругами того времени как "правильный", "литературный" язык.
Edición modernizada y anotada de Saber del mal y del bien de Pedro Calderón de la Barca.
Creators: name: Gagnon, Julie.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1996
Subjects: subject: Literature, Romance.

description: The purpose of this thesis is to present, for the first time, a modernized and annotated edition of the play Saber del mal y del bien, by Pedro Calderon de la Barca, published in the Primera Parte de Comedias in 1636. In this thesis the text has been modernized in conformity to the rules of modern punctuation, accentuation, and spelling. Every fifth verse has been numbered, and the different strophes indicated in the text, and studied in my introduction. The introduction includes a brief analysis of some of the central themes of the play in the hope that it may awaken interest in this relatively obscure Calderonian piece. I also attempt to reconstruct the possible staging of the original play which, according to Valbuena, was presented by the theatrical company of Roque de Figueroa on March 28, 1628. My proposed staging is based on what we know of the theatrical conventions which existed in the Spanish Golden Age. The most substantial part of a modernized edition consists in establishing and annotating the text. The purpose of the philological annotation is to explain references, allusions, and passages of the play of historical or mythological character as well as symbols and even aphorisms which are in the text and which, for a modern reader, amy seem ambiguous or confusing. The purpose of these notes is not only to elucidate these allusions but to also relate them to the text in order to offer an interpretation which is faithful to the original sense of the play. In conclusion, all these factors render Saber del mal y del bien an important comedia which will no longer remain in obscurity.
Isoform-specific functions of the dystonin cytoskeletal organizing proteins
Creators: name: Young, Kevin G
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2007
Subjects: subject: Biology, Molecular.

description: Dystonin/Bpag 1 proteins, whose loss of function results in neuromuscular dysfunction in mice, have been implicated as being essential cytoskeletal organizing proteins in sensory neurons. How exactly they function as such is unclear, however. I have attempted to characterize the subcellular localizations and interactions of different dystonin isoforms in order to help place these proteins into their relevant cellular contexts. By using fusion protein analysis and observing the localization of endogenous dystonin in tissue culture cells, I have determined that the dystonin-a2 isoform can insert into internal membranes around the nucleus via an N-terminal transmembrane domain. Subsequently I demonstrated that a full-length dystonin-a2 fusion protein can reorganize the endoplasmic reticulum (ER) and associate with an outer nuclear membrane protein. The dystonin-a2 isoform is predominantly neuronal, with its strongest expression being in sensory ganglia. Analysis of dystonin in dorsal root ganglia (DRG) and of the DRG phenotype in dystonin mutant mice indicated that loss of the dystonin-a2 isoform, in particular, results in perikaryal abnormalities including disorganization of the rough ER. Analysis of other dystonin isoforms in cell culture indicated that they rely on different domains to dictate their localizations. Each of the dystonin isoforms may reorganize the cytoskeleton via direct interactions with actin filaments and microtubules. Our analysis indicates that a key cause of cell-intrinsic neuronal dysfunction and degeneration in dystonin mutant mice may occur as a result of aberrant cytoskeletal attachment to internal membranes, in particular the ER and nuclear envelope.
Design of ruthenium-pseudohalide catalysts for olefin metathesis
Creators: name: Conrad, Jay C
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2007
Subjects: subject: Chemistry, Inorganic.
subject: Chemistry, Organic.

description: Ruthenium-catalyzed olefin metathesis is an exceptionally powerful method for the catalytic formation of new C=C bonds, recognized last year with the Nobel Prize. While the Grubbs-class catalysts RuCl2LL'(CHPh) have led to many advances, they offer limited selectivity and lifetimes. As these shortcomings are associated with the chloride ligands, we sought to incorporate "pseudohalide" ligands. Catalysts RuXX'(CHPh)(IMes)(py) were prepared by use of sterically undemanding ancillary ligands and electron-deficient aryloxides. Their modular structure permits control over selectivity via matching of catalyst and substrate reactivity. While their initiation efficiency lies between that of the second- and third-generation Grubbs catalysts, high efficiency is found in RCM of alpha,o-dienes to form trisubstituted olefins, vinyl alcohols, alpha,beta-unsaturated acrylates, macrolactones, ethers, tertiary amines, thioethers, and silanes. Their performance relative to the most active Grubbs systems is sometimes better, sometimes less so, with the optimum catalyst being a matter of trial and error (though the sustained activity of the aryloxide catalysts means that they often perform better in reactions that require long lifetimes). They are outstanding in enyne metathesis (enabling quantitative formation of tetrasubstituted olefins, a first in Ru-catalyzed metathesis) and in RCM synthesis of macrocycles. Examination of the much longer reaction time of the Grubbs systems led to the unexpected finding that oligomerization of alpha,o-dienes is kinetically dominant, and that RCM products are liberated in a concentration-dependent backbiting reaction. This is extremely important, as oligomers are generally regarded as a dead end in metathesis. This finding completely revises our understanding of the context and protocols for construction of conformationally flexible, medium and large rings by RCM.
Design and Implementation of Routing Algorithms for Supporting Multi-dimensional Range Query in HD Tree
Creators: name: Ye, Xun
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2011
Subjects: subject: Computer Science.

description: The HD Tree is a novel data structure, which was recently proposed by Yunfeng Gu to support multi-dimensional range queries in a distributed environment. My thesis work is a follow-up to the research on the HD Tree. It focuses on the basic routing strategies in order to support multi-dimensional range queries in the HD Tree. There are two basic routing strategies supported by the HD Tree data structure: hierarchical routing and distributed routing. Hierarchical routing is an adapted version of routing in the tree structure, while distributed routing is a novel routing strategy built over the distributed structure of the HD Tree in order to accommondate the distributed environment. Hierarchical routing can be applied to any source and destination pair in the HD Tree, but results in a massive work load on nodes near the root. It also has very limited options in case of a node failure. Although distributed routing is applied only to the source and destination pair at the same depth of the HD Tree, its communication load is distributed to two sets of nodes at neighboring depths. Distributed routing has more options to survive a node failure. In my thesis work, four distributed routing algorithms were explored. Each of these four is a stand-alone routing algorithm, and can be applied in different routing conditions. Both theoretical analysis and experimental results indicate that any routing algorithm alone is able to achieve similar or better performance compared to the equivalent tree structure. However, the significance of this thesis work pertains not only to the performance issue. These different routing algorithms provide multiple options to accommondate a changing environment. Based on my thesis work, there were two advanced routing algorithms developed, a X2X routing algorithm which is a combination of four distributed routing algorithms, and a DROCR algorithm which is a combination of the hierarchical and distributed routing algorithms. These algorithms not only achieve considerable performance gain over its equivalent tree structure, but also make the routing in the HD Tree highly error resilient and load balancing. They are the fundamental algorithms in supporting multi-dimensional range queries in the HD Tree.
A proposal for surveillance and case registry of schizophrenia in Ontario
Creators: name: Middlebro', Alison Kathleen
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2011
Subjects: subject: Health Sciences, Medicine and Surgery.
subject: Psychology, Clinical.
subject: Health Sciences, Epidemiology.

description: Schizophrenia is an illness causing impairment in thinking and functioning in many realms of everyday life. It is considered one of the most disabling of mental illnesses. This thesis considers the impact of schizophrenia in Ontario, including elevated mortality, degree of disability, economic impact. Some known risk factors for schizophrenia are increasingly common in Ontario, such as urban exposure, and a history of immigration. The impact of the illness in Ontario makes schizophrenia a good candidate for surveillance and case registry in this province. This thesis reviews the required elements of a surveillance system, including case definition and potential data sources and applies them to surveillance of schizophrenia in Ontario. The thesis then proposes a surveillance system and linked case registry based on combined OHIP, discharge abstract and mental health care administrative data, and outlines the necessary steps in implementation and evaluation of the system.
The consequences of gestational and postpartum environmental enrichment on behaviour in the mother rat
Creators: name: Sparling, Jessica E
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2011
Subjects: subject: Psychology, Behavioral Sciences.

description: Environmental enrichment is known to influence an animal's well-being, provide opportunities for activity, and encourage behaviours appropriate to the species. Female Long-Evans rats were co-housed during their gestational and postpartum times in a colony housing environment comprising numerous cages, with interconnecting tubes, surrounding a multileveled enclosure with many objects scattered throughout. A control group of rats were housed in standard cages. The effects of the physical and social enrichment were determined by evaluating group differences in body weight, litter characteristics, elevated-plus maze performance during the gestational and postpartum periods, and Morris water maze behaviour (postpartum only). Results showed that enriched females were leaner and maintained a constant postpartum weight. Group differences in litter characteristics were observed, with enriched females having heavier but fewer offspring. Behavioural trends were observed in the elevated-plus maze with enriched rats showing greater change in behaviours over time. In the Morris water maze probe test, enriched rats performed less thigmotaxic and more middle maze swimming, as well as an increased tendency to enter the quadrant where the platform was located in non-probe trials. A housing environment, with complex physical and social stimulation, offered more opportunity for environmental interactions producing heartier pups and leaner mothers that displayed differential behavioural responses compared to control mothers. Studying maternal-offspring interactions in a more naturalistic environment allows one to observe a greater repertoire of behaviours that accommodates adequate normal or natural cognitive development than can be observed in the typical standard laboratory housing that limits experience and environmental engagement. Published as Sparling, Manhoney, Baker, & Bielajew, The effects of gestational and postpartum environmental enrichment on the mother rat: a preliminary investigation, in Behavioural Brain Research, 2010, 208, p.213-223.
Intelligent network service control point: Design, modeling and evaluation.
Creators: name: Ouellette, Michel.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1998
Subjects: subject: Engineering, Electronics and Electrical.

description: This thesis examines and suggests solutions to some of the technical problems and performance problems encountered when designing modeling, and evaluating a Service Control Point (SCP) architecture. The SCP is known as the "heart" of the Intelligent Network (IN). It is essentially a transaction processor-based computer system designed to execute IN services under stringent performance requirements and Quality of Service (QoS). Expected future problems for the SCP are mainly due to the introduction and increasing complexity of new, and already deployed IN services (e.g., freephone service, calling card service, televoting, virtual private network, universal access number, etc.). The challenges in designing the SCP architecture will involve issues such as performance, evaluation of the system, quality of service definition, estimating the capacity and delays/blocking, traffic rate measurements, availability, reliability, flow control, management activities, interworking, etc. We present and study an SCP architecture by means of queuing models and simulations. Our study differs from previous research as we consider in detail the internal SCP architecture. The proposed SCP architecture is designed as a multiprocessor-based system. It provides scalability while maintaining the requirements of the three most important performance metrics: SCP throughput, SCP response time and SCP call sampling rate. Scalability insures that IN services and SCP call sampling growth rates can be handled without impacting the performance of the SCP. The architecture also lends itself to discuss a multitude of performance and modeling issues such as service logic program storage, IN call processing activity, real-time traffic rate, main memory constraints, blocking probability, buffer dimensioning, bottleneck problems, management and administrative activities, statistical distributions, and specialized processors.
Improving port isolation in dual-polarized microstrip patch antenna arrays
Creators: name: Acimovic, Igor
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2006
Subjects: subject: Engineering, Electronics and Electrical.

description: In this thesis we present the design techniques mitigating the port isolation degradation in dual-polarized microstrip arrays. The advantages of using dual-polarized antennas are the frequency band reuse and simultaneous receive/transmit capability. To fully exploit these advantages the isolation between orthogonally polarized ports must be maximized and radiation cross-polarization minimized. To prevent the port isolation degradation due to presence of the feed network lines surrounding the radiator the "folded" feed optimized to maximize the port isolation is introduced. The analysis of the port isolation dependence on radiating element positioning and grouping as well as the layout of the non-mirrored sections of the feed network within the array is performed. Based on the design guidelines introduced in this thesis the 4x4 element dual-polarized microstrip patch array was manufactured and port isolation in excess of 40dB was measured over the impedance bandwidth. The effects of excitation amplitude taper and excitation phase progression on port isolation performance of the array are examined and the results presented.
Genomic prediction accuracies in space and time for height and wood density of Douglas-fir using exome capture as the genotyping platform
Creators: name: Thistlethwaite, Frances R
name: Ratcliffe, Blaise
name: Klápště, Jaroslav
name: Porth, Ilga
name: Chen, Charles
name: Stoehr, Michael U
name: El-Kassaby, Yousry A.
Publisher: name: BioMed Central
Year: 2017

description: Background: Genomic selection (GS) can offer unprecedented gains, in terms of cost efficiency and generation turnover, to forest tree selective breeding; especially for late expressing and low heritability traits. Here, we used: 1) exome capture as a genotyping platform for 1372 Douglas-fir trees representing 37 full-sib families growing on three sites in British Columbia, Canada and 2) height growth and wood density (EBVs), and deregressed estimated breeding values (DEBVs) as phenotypes. Representing models with (EBVs) and without (DEBVs) pedigree structure. Ridge regression best linear unbiased predictor (RR-BLUP) and generalized ridge regression (GRR) were used to assess their predictive accuracies over space (within site, cross-sites, multi-site, and multi-site to single site) and time (age-age/ trait-trait). Results: The RR-BLUP and GRR models produced similar predictive accuracies across the studied traits. Within-site GS prediction accuracies with models trained on EBVs were high (RR-BLUP: 0.79–0.91 and GRR: 0.80–0.91), and were generally similar to the multi-site (RR-BLUP: 0.83–0.91, GRR: 0.83–0.91) and multi-site to single-site predictive accuracies (RR-BLUP: 0.79–0.92, GRR: 0.79–0.92). Cross-site predictions were surprisingly high, with predictive accuracies within a similar range (RR-BLUP: 0.79–0.92, GRR: 0.78–0.91). Height at 12 years was deemed the earliest acceptable age at which accurate predictions can be made concerning future height (age-age) and wood density (trait-trait). Using DEBVs reduced the accuracies of all cross-validation procedures dramatically, indicating that the models were tracking pedigree (family means), rather than marker-QTL LD. Conclusions: While GS models’ prediction accuracies were high, the main driving force was the pedigree tracking rather than LD. It is likely that many more markers are needed to increase the chance of capturing the LD between causal genes and markers.
Applications of computational free energy calculations in tautomer systems
Creators: name: Tao, Yujun
Publisher: name: No Publisher Supplied
Year: 2024

description: With the rapid development in drug discovery for small molecules or DNA/RNA therapeutics, a pressing need and an opportune moment arose for development of free energy calculation approaches to estimate binding affinity or reaction mechanisms. In this dissertation, the alchemical free energy approach in molecular mechanics is detailed (in Chapter 3) and was applied for solvation free energy in small molecules. In Chapter 4, several correction methods from molecular mechanics to quantum mechanics were compared and applied to tautomeric biological systems. Finally, Chapters 5 and 6 discussed the application of machine learning model to use semiempirical QM method to predict ab initio QM method, and to use for path integral molecular dynamics. The machine learning model was applied to study proton transfer mechanism for mispair in DNA system. All the free energy methods mentioned in this dissertation can provide a good guideline for leading candidates in drug discovery and interpretation of experimental data in DNA system.
Optimization and performance analysis of the V-BLAST algorithm
Creators: name: Kostina, Victoria
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2006
Subjects: subject: Engineering, Electronics and Electrical.

description: Complexity-performance tradeoff in different implementations of the V-BLAST algorithm is discussed. Low-complexity alternatives to the optimal ordering procedure, such as ordering at 1st step, adaptive power allocation and pre-set non-uniform power allocation are proposed. A unified analytical framework for the optimum power allocation in the V-BLAST algorithm is presented. Comparative performance analysis of the optimum power allocation based on various optimization criteria (average and instantaneous block and total error rates) is given. Uniqueness of the optimum power allocation is proven for several scenarios. Compact closed-form approximations for the optimum power allocation and for the optimized error rates are derived. The SNR gain of optimization is rigorously defined and analyzed using analytical tools, including lower and upper bounds, high and low SNR approximations. The gain is upper bounded by the number of transmitters, for any modulation format and type of fading channel. While the average optimization is less complex than the instantaneous one, its performance is almost as good at high SNR. A measure of robustness of the optimized algorithm is introduced and evaluated. The optimized algorithm is shown to be robust to perturbations in individual and total transmit powers.
Experimental methods in number theory and combinatorics
Creators: name: Dougherty-Bliss, Robert
Publisher: name: No Publisher Supplied
Year: 2024

description: Some results in experimental mathematics are presented. In particular, new primality tests based on the theory of linear recurrences; the confirmation of some conjectures by Manuel Kauers and Christoph Koutschan;some new proofs of famous summation identities; a connection to Gosper summability of factorials and Bell numbers; the creation of new, decidable diophantine equations; experiments related to Beukers’ proof of the irrationality of Apery’s constant; and an enumeration of certain types of restricted Dyck paths.
Rundkørsler, trafiksikkerhed og cyklister
Creators: name: Jensen, Søren Underlien
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2012

description: Artiklen beskriver et systematisk litteraturstudie om sikkerhed i rundkørsler, hvor meta-analyser bruges til at estimere sikkerhedseffekter på tværs af studier, samt en ny før-efter uheldsevaluering af ombygninger af kryds til rundkørsler. I uheldsevalueringen indgår 332 rundkørsler, 2.497 uheld og 1.328 personskader. Der korrigeres for generelle udviklinger i trafiksikkerheden og regressionseffekt. Litteraturstudiet viser, at ombygninger af kryds til rundkørsler medfører sikkerhedsmæssige gevinster, da omkring 60% af personskadeuheldene og 25% af materielskadeuheldene forebygges. Sikkerhedseffekter er bedre ved ombygning af vigepligtsregulerede kryds end ved ombygning af lyskryds. Sikkerhedseffekter er bedre ved ombygning af 4-benede kryds end 3-benede kryds. Sikkerhedseffekter er bedre på landet end i byer. Sikkerhedseffekter er dårligere for cyklister end for andre trafikantgrupper, idet antallet af cykeluheld stiger ca. 20% ved ombygninger af kryds til rundkørsler. Før-efter uheldsevalueringen viser, at ombygningerne har medført fald i antallet af uheld og personskader på hhv. 27 og 60%. Uheldene bliver samtidig mindre alvorlige. Eksempelvis falder antallet af dræbte med 87%, mens uheld kun med materielle skader falder med blot 16%. Sikkerhedseffekterne varierer fra sted til sted. Jo højere hastighedsbegrænsningen er, desto bedre effekt. Jo større en andel af uheldene i kryds, der er venstresvingsuheld og tværkollisioner, desto bedre effekt. Jo mindre en andel af uheldene i kryds, der er cykeluheld, desto bedre sikkerhedseffekt. Sikkerhedseffekter er 12-13 procentpoint bedre på lang sigt end på kort sigt. Antallet af cykeluheld og skadede cyklister er steget med hhv. 65 og 40%. Det oftest anvendte design for cyklister er cykelbaner i rundkørslerne. Cykelbaner har medført de dårligste sikkerhedseffekter, mens cykelstier ved rundkørsler, hvor cyklister er pålagt vigepligt, har medført de bedste effekter. Farvede cykelbaner og blå cykelfelter har medført dårligere sikkerhedseffekter end tilsvarende cykelfaciliteter uden farve. Midterøens højde påvirker sikkerhedseffekter, idet midterøer over 2 meter giver de bedste effekter. Trekants- og trompetheller giver bedre effekter end rundkørsler uden heller eller med parallelheller.
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 No. 1 (2012): Proceedings from the Annual Transport Conference at Aalborg University
Intervenir en situations de violence conjugale: Un défi professionnel, mais aussi personnel pour les policiers patrouilleurs
Creators: name: Lemelin-Simard, Catherine
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2007
Subjects: subject: Sociology, Criminology and Penology.

description: La violence conjugale est depuis les dernières décennies une préoccupation sociale importante. À cet égard, des politiques sociales ont été élaborées afin d'uniformiser l'intervention lors de situations de violence conjugale ainsi que l'aide qui doit être apportée. L'intervention des policiers s'inscrit alors dans un certain cadre juridique et politique. Jusqu'à maintenant, beaucoup d'études se sont penchées sur les facteurs qui influencent l'intervention des policiers, mais très peu se sont intéressées à ce que ces derniers en pensent. Cette recherche a donc exploré comment les policiers conçoivent leur intervention lors de situations de violence conjugale. Par le biais d'une méthodologie qualitative, neuf (9) entretiens semi directifs de type exploratoire ont été conduits auprès de policiers patrouilleurs. La méthode de la thématisation est utilisée afin de dégager les thèmes récurrents. L'analyse, utilisant un cadre interactionniste symbolique et un concept de socialisation secondaire, nous permet de constater que les policiers reçoivent aujourd'hui une formation pour intervenir en matière de violence conjugale, que des directives internes guident leur pratique et qu'ils apparaissent nourrir un peu moins de préjugés à l'endroit de la violence conjugale. Par ailleurs, on note que les expériences personnelles influencent la conception voire même l'intervention des policiers en matière de violence conjugale. Ce qui laisse voir que la conception des policiers concernant leur intervention en situations de violence conjugale n'est ni statique ni unique. Chaque policier a une manière différente de voir la violence conjugale et son intervention.
Monitoring and control of infectious diseases in food producing animals
Creators: name: ARNOUTS, Sven
name: Nouwen, Ria
name: Merris, Valérie Van
name: Imberechts, Hein
name: Gillet, Laurent
Publisher: name: Zenodo
Year: 2020
Subjects: infectious diseases
prevention
livestock
monitoring
veterinary

description: Initiative towards a strategic research agenda on Monitoring and control of infectious diseases in food-producing animals
Youth and sports consumption.
Creators: name: Norman, Moss Edward.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2000
Subjects: subject: Psychology, Developmental.

description: Using ethnography, this study focused on a series of conversations with 47 young people from different social and geographical locations in an attempt to gain greater insight into how the consumption of sport and sport-related commodities are enmeshed in young men and women's struggle toward identity formation. From this exploration, there were three fundamental and inter-penetrating themes that emerged. First, the participants validated their sports consumption habits by describing the functional attributes of the commodities they consumed, namely comfort, quality and look. This served to defend against inferences suggesting that they may be conformists mindlessly shopping according to the social seduction of the sign. Second, choice within the sphere of sports consumption was repeatedly cited as a moment of empowerment and individuality whereby the participants, anxious to characterize themselves as rational and autonomously consuming individuals, were comfortable articulating and demonstrating their own creativity and character. Finally, the Other was essential to the self in the process of presenting one's own identity or the identity of a group in and through sports commodities, boundaries were established and re-established by way of a ceaselessly evolving depiction of the Other. In conclusion, for the young people involved in this study, sport and its related commodities play a crucial role in the complexities of peer relations and the ever-evolving process of identification and identity formation.
Toxicological basic data for the derivation of EU-LCI values for 5 substances from building products
Creators: name: Voss, Jens-Uwe
Publisher: name: My University
Year: 2018
Subjects: subject: Innenraumluft
subject: Toxizität
subject: Menschliche Gesundheit
subject: EU-LCI values
subject: AgBB
subject: indoor air
subject: building products
subject: toxicity
subject: human health
subject: inhalation exposure
subject: 2-phenylpropene
subject: vinyl toluene (o-
subject: m-
subject: p- and isomer mixture)
subject: n-heptane
subject: hexylene glycol
subject: tripropylene glycol monomethyl ether
subject: Air

description: The subject of this project was the preparation of substance reports for the following substances: 2-phenylpropene (CAS No. 98-83-9), vinyl toluene (mixture of o-, m-, p- and isomers) (CAS No. 611-15- 4, 100-80-1, 622-97-9, 25013-15-4), n-heptane (CAS No. 142-82-5), hexylene glycol (CAS No. 107-41-5) and tripropylene glycol monomethyl ether (CAS No. 20324-33-8, 25498-49-1). For these substances, the toxicological data basis were researched, compiled and evaluated, and EU-LCI values were proposed. The EU-LCI values form the basis for assessing the health effects of emissions from construction products and allow the harmonisation of the health assessment of construction product emissions throughout Europe. The final EU-LCI values are set by the EU-LCI Working Group, a  group of experts from ten European countries, and may differ from the proposals contained in this report. The EU-LCI Working Group is currently developing a harmonised European list of substances and their associated emission limits (EU-LCI values). The substance reports developed within this project support and accelerate this process.
The Ngaanyatjarra Lands Telecommunications project: A quest for broadband in the Western Desert
Creators: name: Featherstone, Daniel
Publisher: name: Swinburne
Year: 2024

description: Vast regions in Australia still have limited access to adequate telecommunications. With the rollout of the National Broadband Network underway, remote Indigenous Australia risks being left out, increasing its isolation and widening the 'digital divide'. In the past, the vast Ngaanyatjarra Lands of south-eastern Western Australia have had one of the poorest levels of telecommunications service in Australia. However, the regional shire, land council and the community media organisation have worked together with the WA Government to address this problem. This effective collaboration led to the Ngaanyatjarra Lands Telecommunications Project (NLTP): a fibre optic network connecting six remote desert communities, a broadband satellite solution to connect the remaining six outer communities and community-wide WiFi in all twelve sites. This article describes the process of creating the NLTP and some of the flow-on benefits for the region and Yarnangu (Ngaanyatjarra people).
Peer versus coping models: The influence on children's self-efficacy beliefs, perceived task difficulty and diving performance.
Creators: name: Clark, Shannon E.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2001
Subjects: subject: Education, Physical.

description: The purpose of this experiment was to examine the influence of peer mastery and peer coping models on children's self-efficacy beliefs, perceptions of task difficulty and diving performance. Thirty children (M age = 7.7, SD = 2.3) who did not yet know how to dive and who were identified as having low feelings of self-efficacy towards diving and high perceptions of diving task difficulty were randomly assigned to peer mastery, peer coping or control model conditions. The experiment took place over 4 days. On the first three days the participants were exposed to their assigned modeling condition and then received diving instruction. After the last intervention session there was an immediate-retention test and the following day there was a delayed-retention test. Prior to intervention and for both retention tests, two psychological dimensions and one physical performance measure were evaluated. As well, recognition performance was evaluated during the delayed-test only. Data were analyzed by four separate one way analyses of variance for Group. Results revealed that the peer coping group increased their self-efficacy beliefs more than the peer mastery group in the delayed-retention test F = (2, 29) = 3.9, p = 0.03. The small sample size and the large variance in each group resulted in the inability to find other statistical findings. Effect sizes were then calculated. This analysis revealed that there were no significant effects between groups in the recognition performance test. The analysis did show that the peer coping group was the better model group for increasing children's perceptions of task difficulty and self-efficacy beliefs towards diving. For diving performance, peer mastery group showed the greatest increases. These findings suggest that a peer mastery model provides more information to the learner about how to do the skill correctly, whereas a peer coping model benefits a learner's psychological responses to observational learning.
Human biomonitoring: assessment of exposure to chemicals and their health risks
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2023

description: Human biomonitoring (HBM) directly measures the concentration of chemicals pollutants or their metabolites in human fluids and tissues. As such, HBM is a reliable instrument for the assessment of human exposure to chemicals from different sources, by different pathways and during certain periods of life. © World Health Organization 2023
Adsorption and reactivity of resonant guanidonium-type cations and aliphatic oximes in the hydrogen UPD region at single-crystal surfaces of platinum.
Creators: name: Pierozynski, Boguslaw.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2001
Subjects: subject: Chemistry, Physical.

description: The direction of the research described in this thesis originates from earlier work in this laboratory on the reactive chemisorption of CH3 CN at Pt single-crystal surfaces, studied by means of cyclic voltammetry and integrated adsorption current transients, coupled with in situ IR reflectance spectroscopy. It was found that resonant guanidonium cations, +NH 2 = C(NH2)2 (G+), have major surface-specific influences on H underpotential deposition (UPD) voltammeric profiles at Pt(hkl) surfaces. Cyclic voltammetry, adsorbate displacement by CO, adsorption charge-transient, in situ FTIR spectroscopy, and a.c. impedance spectroscopy techniques were employed complimentarily to study the adsorption behaviour of G+ cations at Pt single-crystal surfaces. Based on the results of adsorption charge-transients obtained by introduction of 1% solution of G+ in 0.1 mol dm-3 NaOH at the Pt(111) surface, it is concluded that G+ becomes chemisorbed on the Pt surface in a 2-electron transfer process, with resulting electrooxidation of the H's dissociated from --NH2 groups upon their chemisorption. In situ FTIR experiments were conducted in aq. 0.05 mol dm-3 H2SO4 for the purpose of identifying the molecular basis of effects of co-adsorption of G + on the states of adsorbed HSO4- anions through changes of vibrational spectra. The spectroscopic results revealed a broad band in the spectra over the 1500--1600 cm-1 range which was assigned to the >C = NH2+ stretch of G+. Supported by the voltammetric behaviour, they also provided evidence about the co-operative chemisorption of G+ cations with the HSO4- ions on the Pt single-crystal surfaces, where both species are in the chemisorbed state at the Pt surface. This is an attractive interaction which leads to the observed substantial, voltammetric shift of potential for HSO4- desorption towards the RHE potential. A mechanism of this co-operative chemisorption (or ion-pairing) between the G+ cations and the HSO4- (also ClO4- and OH- in aq. HClO4 and NaOH solutions, respectively) ions, co-adsorbed at the Pt single-crystal surfaces, is proposed. Explanations are also given for the reported, in some cases appreciable (for Pt(100) and (511) surfaces), increases that arise in the total voltammetric charges, measured within the potential range for UPD of H. No significant diffusion control for the process of adsorption of G+ at the Pt surface was observed. Thus, the recorded response currents in the voltammograms are directly associated with surface electrochemical processes. (Abstract shortened by UMI.)