cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Overcoming writing output difficulties for students with learning differences
Creators: name: Ames, John Robert
Publisher: name: University of British Columbia
Year: 2015

description: This thesis was designed to identify teachers’ perceptions of the reasons for student learning differences regarding essay writing output difficulties, with the aim of proposing resolutions and strategies for overcoming them. The thesis first reviewed previous writing instruction methods exploring common difficulties learners, especially those with learning differences, experience mastering formal written essay expression. Second, the thesis reviewed seventeen writing interventions with measured efficacy, grouping them as effective, non-effective, and in the case of two interventions, non-measured strategies. Third, the thesis addressed reasons for researching writing instruction in a large school district in British Columbia, the North Vancouver School Board, in order to compare similarities and contrasts to instructional practices found in other educational jurisdictions identified in the reviewed literature. In facilitating this research, expert answers were sought from four North Vancouver secondary school teachers identifying 'best practices' of teaching writing to students. The research results showed that common themes across teachers’ responses were in the areas of modeling writing, community of learners, student autonomy, affect and writing, differentiated learning, rubric use, portfolios and specific authors and titles in film, novels, poetry, drama and internet blogs. The findings revealed overlaps and differences in approaches to writing instruction compared to the literature reviewed and the author's personal writing instruction experiences.
title: Optional (Non-)Filing and Effective Taxation
Creators: name: Hauck, Tobias
name: Wallossek, Luisa
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2021

description: Tax non-filing is legal in more than thirty countries worldwide. Using German administrative tax data, we examine the effect of such optional (non-)filing systems: Low-income taxpayers are both more likely not to file and to over-remit taxes, aggregating to total over-remittances of 950 millione in 2014. Because low-income non-filers face higher effective average tax rates, this reduces the effective tax progressivity. Non-filing also increases effective marginal tax rates which imposes distortionary effects for non-filers with no mechanical tax revenue gain from other taxpayers, leading to unexploited tax revenue potential. We suggest two reform proposals to quantify this potential.
BOSCHI, Caio C. - O Cabido da Sé de Mariana (1745‑1820): documentos básicos. Belo Horizonte: Fundação João Pinheiro; Editora PUC Minas, 2011. 520 p.
Creators: name: Silva, Hugo Ribeiro Da
Publisher: name: Lusitania Sacra
Year: 2011

description: Lusitania Sacra, n. 24 (2011): A República: Resistências e Acatamento a Nível Local
FRANCO, José Eduardo (Coordenação geral) - Arquivo Secreto do Vaticano: expansão portuguesa: documentação. Tomo I: Costa ocidental de África e ilhas atlânticas. Lisboa: Esfera do Caos Editores, 2011. 1240 p.
Creators: name: Clemente, Manuel
Publisher: name: Lusitania Sacra
Year: 2011

description: Lusitania Sacra, n. 24 (2011): A República: Resistências e Acatamento a Nível Local
Ecosystem based management for Mille Lacs Lake, Minnesota under changing environmental conditions
Creators: name: Kumar, Rajeev
Publisher: name: University of British Columbia
Year: 2015

description: Single-species and multi-species modelling was employed to seek options for sustainable management of Mille Lacs Lake, the second largest lake within Minnesota, known primarily for its walleye (Sander vitreus) fisheries. Managers of the lake face challenges in adapting to changes that include changing temperature of the water body, changing community structure, growing number of piscivorous birds, and an invasion of zebra mussels leading to greater water clarity. The lake experienced a historical decline in the population of cisco (Coregonus artedi)—a cold-water stenothermic forage species. Surplus production models of cisco population suggested that temperature explained 36-40% of change in cisco abundance and that the decline in the species was due to a combination of temperature increase and high fishing pressure. To rebuild the depleted stock, I concluded that strong restriction was required on cisco fisheries especially in warmer years. For multi-species analysis, I built an ecosystem model with the Ecopath with Ecosim (EwE) modelling suite using extensive field data on organism parameters and diet. The EwE model was fitted to abundance and catch data for the period 1985 to 2006. Influence of temperature on the model predictions were simulated by adding temperature data as forcing function in the EwE model. The model was driven forward 25 years to evaluate the ecosystem-wide predictions for prevailing harvesting strategies and other possible fisheries scenarios of interest to the lake managers. The ecosystem model was used to estimate single-species and ecosystem-level reference points for thirteen fished species in the lake with and without including the effects of temperature change. The analysis helped comparison of ecosystem effects and temperature effects on the estimated reference points. The EwE model sucessfully forecast most of the changes seen in the lake after the period of fitted-data from 2007 to 2012. The model was extended for evaluation of ecosystem-wide impact of zebra mussels invasion. The model predicted that the mussels population would stabilise in the lake after attaining maximum density. But during this period several species, including the important walleye, could be negatively affected by the filtration of phytoplankton by zebra mussels.
Downloadable THAT Melbourne scenario results
Creators: name: Davern, Melanie
name: Gunn, Lucy
name: Zapata-Diomedi, Belen
name: Both, Alan
name: De Gruyter, Chris
Publisher: name: RMIT University
Year: 2022
Subjects: subject: 129999 Built Environment and Design not elsewhere classified
subject: FOS: Civil engineering
subject: 120506 Transport Planning
subject: FOS: Social and economic geography
subject: 120508 Urban Design
subject: 111712 Health Promotion
subject: FOS: Health sciences
subject: 111716 Preventive Medicine
subject: 111799 Public Health and Health Services not elsewhere classified
subject: 140302 Econometric and Statistical Methods
subject: FOS: Economics and business
subject: 140208 Health Economics

description: Downloadable output files for all scenarios of transport types and health outcomes used in THAT Melbourne modelling
ALMEIDA, A. A. Marques de (coord. técnica) - Dicionário histórico dos sefarditas portugueses: mercadores e gente de trato. Lisboa: Campo da Comunicação, 2009. 740 p.
Creators: name: Jana, Ernesto
Publisher: name: Lusitania Sacra
Year: 2011

description: Lusitania Sacra, n. 24 (2011): A República: Resistências e Acatamento a Nível Local
title: Henry M. Jackson Foundation Collection
Creators: name: Uniformed Services University of the Health Sciences
Publisher: name: University Archives, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
Year: 2025
Subjects: classificationCode: 3
subject: FOS: Medical and health sciences
classificationCode: 6.1
subject: FOS: History and archaeology

description: USUHS Archives Finding Aid
Henry M. Jackson Foundation Collection
2025
Extended WKB method, resonances and supersymmetric radial barriers
Creators: name: Fernandez-Garcia, Nicolas
name: Rosas-Ortiz, Oscar
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Semiclassical approximations are implemented in the calculation of position and width of low energy resonances for radial barriers. The numerical integrations are delimited by t/T<<8, with t the period of a classical particle in the barrier trap and T the resonance lifetime. These energies are used in the construction of `haired' short range potentials as the supersymmetric partners of a given radial barrier. The new potentials could be useful in the study of the transient phenomena which give rise to the Moshinsky's diffraction in time.
description: 12 pages, 4 figures, 3 tables
Supplementary analysis and figures from From temporal network data to the dynamics of social relationships
Creators: name: Gelardi, Valeria
name: Le Bail, Didier
name: Barrat, Alain
name: Claidiere, Nicolas
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Additional analysis and figures complementing the material presented in the main text.
BALLESTEROS, Cármen e RUAH, Mery (coord.) - Colóquio Internacional Os Judeus Sefarditas entre Portugal, Espanha e Marrocos. Lisboa: Ed. Colibri; Associação Portuguesa de Estudos Judaicos; CIDEHUS‑UE, 2004
Creators: name: Jana, Ernesto
Publisher: name: Lusitania Sacra
Year: 2011

description: Lusitania Sacra, n. 24 (2011): A República: Resistências e Acatamento a Nível Local
Geology, alteration, mineralization and magmatic evolution of the Southeast Zone (Cu-Mo) and Deerhorn (Cu-Au) porphyry deposits, Woodjam, central British Columbia, Canada
Creators: name: Del Real Contreras, Irene
Publisher: name: University of British Columbia
Year: 2015

description: The Woodjam district is part of the porphyry deposits of Late Triassic to Middle Jurassic age (216–183 Ma) located in the Quesnel terrane in central British Columbia. Porphyry centers include the large Cu-Mo Southeast Zone (SEZ), hosted in the calc-alkalic Takomkane batholith, and the Au-Cu Deerhorn, Megabuck and Takom deposits. The latter are peripheral to the margin of the batholith and are associated with smaller monzonitic bodies of more mafic affinity that intrude and mineralize Nicola Group strata. The Takomkane batholith, host to the SEZ, intrudes and underplates the Nicola Group strata. The main phases include coarse-quartz-monzonite (CQM; 197.48±0.44 Ma) and a later, fine-grained-quartz-monzonite (FQM). Alteration is zoned from intense K-silicate in the center, weaker towards the margins, surrounded by albite alteration at the margins. Mineralization is zoned from chalcopyrite to pyrite-dominated at the margins. The Deerhorn deposit is centered on narrow monzonite bodies with “pencil” geometry and intrudes the Nicola Group volcanic sequence. Main stage of mineralization is hosted in Monzonite-A and is cut by Monzonite-D. Alteration is characterized by intense magnetite and K-silicate in Monzonite-A and adjacent volcaniclastics. Monzonite D displays moderate to weak K-silicate alteration. Mineralization is hosted in banded quartz-magnetite-hematite-chalcopyrite veins in Monzonite A and adjacent volcanic host-rocks. SEZ and Deerhorn intrusive units share geochemical characteristics. The early Takomkane units have higher SiO₂ and incompatible element concentrations, less-fractionated HREEs, negative Eu anomalies, and more radiogenic Nd isotope ratios than the Deerhorn monzonites. The latter are themselves similar to the late SEZ FQM which suggests that the latter and the Deerhorn monzonites are co-magmatic. Differences between alteration and mineralization of both deposits are partially attributed to the depth of emplacement; Cu-Au mineralization at Deerhorn represents a shallower expression of the magmatic hydrothermal system and Cu-Mo mineralization in SEZ represents the deeper segment of the partially contemporaneous system. Geochemical and isotopical affinities between the FQM/Monzonite-A/Monzonite-D intrusions and the plagioclase-phyric andesite of the Nicola Group indicate that these intrusions were partially coeval, and that mineralization in the Woodjam area is tightly connected to the Nicola Group volcanism, as age and chemistry of the rocks are similar.
FERNANDES, Isabel Cristina (coord.) - As Ordens Militares e as Ordens de Cavalaria entre o Ocidente e o Oriente. Actas do V Encontro sobre Ordens Militares. Palmela: Câmara Municipal de Palmela/GEsOS, 2009. 942 p.
Creators: name: Jana, Ernesto
Publisher: name: Lusitania Sacra
Year: 2011

description: Lusitania Sacra, n. 24 (2011): A República: Resistências e Acatamento a Nível Local
Molecular Nodal Restaging Based on CEACAM5, FGFR2b and PTPN11 Expression Adds No Relevant Clinical Information in Resected Non-Small Cell Lung Cancer
Creators: name: Macia, Ivan
name: Aiza, Gemma
name: Ramos, Ricard
name: Escobar, Ignacio
name: Rivas, Francisco
name: Ureña, Anna
name: Aso, Samantha
name: Rosado, Gabriela
name: Rodriguez-Taboada, Pau
name: Deniz, Carlos
name: Nadal, Ernest
name: Capella, Gabriel
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: The relapse rate in non-small cell lung cancer (NSCLC) is high, even in localized disease, suggesting that the current approach to pathological staging is insufficiently sensitive to detect occult micrometastases present in resected lymph nodes. Therefore, we aimed to determine the prognostic value of the expression of embryonic molecular markers in histologically-negative lymph nodes of completely-resected NSCLC. 76 completely-resected NSCLC patients were included: 60 pN0 and 16 pN1. Primary tumors and 347 lymph node were studied. CEACAM5, FGFR2b, and PTPN11 expression levels were evaluated through mRNA analysis using real-time RT-qPCR assay. Statistical analyses included the Kruskal-Wallis test, Kaplan Meier curves, and log-rank tests. CEACAM5 expression levels were scored as high in of 90 lymph nodes (26%). The molecular-positive lymph nodes lead to the restaging of 37 (62%) pN0 patients as molecular N1 or N2 and 5 (31%) pN1 cases were reclassified as molecular-positive N2. Surprisingly, molecular-positive patients associated with a better OS (overall survival, p = 0,04). FGFR2b overexpression was observed in 41 (12%) lymph nodes leading to the restaging of 17 patients (22%). Again a trend was observed toward a better DFS (disease-free survival) in the restaged patients (p = 0,09). Accordingly, high expression levels of CEACAM5 or FGFR2b in the primary were related to better DFS (p = 0,06; p Molecular nodal restaging based on expression levels of CEACAM5 and/or FGFR2b, does not add relevant clinical information to pathological staging of NSCLC likely related to the better prognosis of their overexpression in primary tumors.
Molecular Nodal Restaging Based on CEACAM5, FGFR2b and PTPN11 Expression Adds No Relevant Clinical Information in Resected Non-Small Cell Lung Cancer
Creators: name: Macia, Ivan
name: Aiza, Gemma
name: Ramos, Ricard
name: Escobar, Ignacio
name: Rivas, Francisco
name: Ureña, Anna
name: Aso, Samantha
name: Rosado, Gabriela
name: Rodriguez-Taboada, Pau
name: Deniz, Carlos
name: Nadal, Ernest
name: Capella, Gabriel
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: The relapse rate in non-small cell lung cancer (NSCLC) is high, even in localized disease, suggesting that the current approach to pathological staging is insufficiently sensitive to detect occult micrometastases present in resected lymph nodes. Therefore, we aimed to determine the prognostic value of the expression of embryonic molecular markers in histologically-negative lymph nodes of completely-resected NSCLC. 76 completely-resected NSCLC patients were included: 60 pN0 and 16 pN1. Primary tumors and 347 lymph node were studied. CEACAM5, FGFR2b, and PTPN11 expression levels were evaluated through mRNA analysis using real-time RT-qPCR assay. Statistical analyses included the Kruskal-Wallis test, Kaplan Meier curves, and log-rank tests. CEACAM5 expression levels were scored as high in of 90 lymph nodes (26%). The molecular-positive lymph nodes lead to the restaging of 37 (62%) pN0 patients as molecular N1 or N2 and 5 (31%) pN1 cases were reclassified as molecular-positive N2. Surprisingly, molecular-positive patients associated with a better OS (overall survival, p = 0,04). FGFR2b overexpression was observed in 41 (12%) lymph nodes leading to the restaging of 17 patients (22%). Again a trend was observed toward a better DFS (disease-free survival) in the restaged patients (p = 0,09). Accordingly, high expression levels of CEACAM5 or FGFR2b in the primary were related to better DFS (p = 0,06; p Molecular nodal restaging based on expression levels of CEACAM5 and/or FGFR2b, does not add relevant clinical information to pathological staging of NSCLC likely related to the better prognosis of their overexpression in primary tumors.
MILLET, Hélène - L’Église du Grand Schisme, 1378‑1417. Paris: Éditions A. et J. Picard, 2009. 272 p. (Col. Les Médiévistes français, nº 9)
Creators: name: Farelo, Mário
Publisher: name: Lusitania Sacra
Year: 2011

description: Lusitania Sacra, n. 24 (2011): A República: Resistências e Acatamento a Nível Local
Photoproduction of electron-positron pairs in bent single crystals
Creators: name: Chesnokov, Yu. A.
name: Maisheev, V. A.
name: Bolognini, D.
name: Hasan, S.
name: Prest, M.
name: Vallazza, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The process of photoproduction of electron-positron pairs in bent single crystals is considered in this paper. In particular, it is shown that the probability of the process for gamma-quanta with energies from 100 GeV on is significantly higher than the one in an amorphous medium. A possible scenario for the experimental validation of the process is discussed and the positive features of the photoproduction in bent crystals compared to straight ones are underlined from the point of view of possible applications.
description: 13 pages, 6 figures
Functional analysis of homeodomain transcription factors in secondary cell wall formation in Arabidopsis thaliana
Creators: name: Liu, Yuanyuan
Publisher: name: University of British Columbia
Year: 2020

description: The plant secondary cell wall is a composite network of complex polymers (cellulose, lignin, and hemicellulose) that provides protective and structural properties to the cell wall. The TALE homeodomain transcription factor KNOTTED ARABIDOPSIS THALIANA7 (KNAT7) is part of a regulatory network governing the commitment to secondary cell wall biosynthesis of Arabidopsis thaliana, where it contributes to negative regulation of this process. This thesis demonstrates that BLH6, a BEL1-LIKE HOMEODOMAIN protein, specifically interacts with KNAT7, and this interaction influences secondary cell wall development. BLH6 is a transcriptional repressor, and BLH6-KNAT7 physical interaction enhances KNAT7 and BLH6 repression activities. The overlapping expression patterns of BLH6 and KNAT7 and phenotypes of blh6, knat7, and blh6 knat7 loss-of-function mutants are consistent with existence of a BLH6-KNAT7 heterodimer that represses commitment to secondary cell wall biosynthesis in interfascicular fibers. BLH6 and KNAT7 overexpression results in thinner interfascicular fiber secondary cell walls, phenotypes that are dependent on the interacting partner. A major impact of the loss of BLH6 and KNAT7 function is enhanced expression of the HD-ZIP transcription factor REVOLUTA/INTERFASCICULAR FIBERLESS1 (REV/IFL1). BLH6 and KNAT7 bind to the REV promoter and repress REV expression, while blh6 and knat7 interfascicular fiber secondary cell wall phenotypes are suppressed in blh6 rev and knat7 rev double mutants, suggesting that BLH6/KNAT7 signaling acts through REV as a direct target. This thesis revealed the pleiotropic phenotypes induced by the overexpression of BLH6 and BLH10, which shed light on other biological functions of BLH6 and BLH10. This thesis also provided new information regarding the existence of a BLH6-KNAT7-OFP complex.
Differential Microlensing Measurements of Quasar Broad Line Kinematics in Q2237+0305
Creators: name: O'Dowd, M.
name: Bate, N. F.
name: Webster, R. L.
name: Wayth, R.
name: Labrie, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The detailed workings of the central engines of powerful quasars remain a mystery. This is primarily due to the fact that, at their cosmological distances, the inner regions of these quasars are spatially unresolvable. Reverberation mapping is now beginning to unlock the physics of the Broad Emission Line Region (BELR) in nearby, low-luminosity quasars, however it is still unknown whether this gas is dominated by virial motion, by outflows, or infall. The challenge is greater for more distant, powerful sources due to the very long response time of the BELR to changes in the continuum. We present a new technique for probing the kinematic properties of the BELR and accretion disk of high-z quasars using differential microlensing, and show how substantial information can be gained through a single observation of a strongly-lensed quasar using integral field spectroscopy. We apply this technique to GMOS IFU observations of the multiply-imaged quasar Q2237+0305, and find that the observed microlensing signature in the CIII] broad emission line favours gravitationally-dominated dynamics over an accelerating outflow.
description: 16 pages, 14 figures
Dressed-quark anomalous magnetic moments
Creators: name: Chang, Lei
name: Liu, Yu-Xin
name: Roberts, Craig D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Perturbation theory predicts that a massless fermion cannot possess a measurable magnetic moment. We explain, however, that the nonperturbative phenomenon of dynamical chiral symmetry breaking generates a momentum-dependent anomalous chromomagnetic moment for dressed light-quarks, which is large at infrared momenta; and demonstrate that consequently these same quarks also possess an anomalous electromagnetic moment with similar magnitude and opposite sign.
description: 4 pages, 1 2-panel figure
DÍAZ, Pablo C. - El Reino Suevo (411‑585). Madrid: Ediciones Akal, 2011. 302 p. il.
Creators: name: Ferreiro, Alberto
Publisher: name: Lusitania Sacra
Year: 2011

description: Lusitania Sacra, n. 24 (2011): A República: Resistências e Acatamento a Nível Local
Unraveling the role of Gp78/AMFR : an E3 ubiquitin ligase and cell surface receptor, in cancer progression
Creators: name: Li, Lei
Publisher: name: University of British Columbia
Year: 2015

description: Background/Aim: This thesis focuses on the role of Gp78/AMFR in cancer progression by (1) investigating the relationship between the dual functions of Gp78/AMFR as a cell surface receptor and intracellular ubiquitin ligase in ERAD; (2) unraveling the post-translational modification (PTM) of Gp78/AMFR selectively targeted by the cancer marker 3F3A mAb and (3) the impact of the PTM on the ubiquitin ligase activity, localization and degradation pathway of Gp78/AMFR. Results: Using microRNA mediated gene silencing technology we showed that a significant reduction of total and cell surface expression of Gp78/AMFR in Gp78/AMFR knockdown HEK293 cells; associated with decreased degradation of the established substrates KAI1, a tumor metastasis suppressor and preventing extracellular AMF/PGI dampening of thapsigargin and ATP-evoked ER calcium release and tunicamycin and thapsigargin induced ER-stress and pre-apoptosis. Next, we demonstrated that 3F3A selectively recognizes dephosphorylated S538 of Gp78/AMFR. Furthermore, we showed that serum starvation induced S538 phosphorylation of Gp78/AMFR via a p38 MAPK signaling pathway. Intriguingly, Gp78/AMFR phosphomimetic mutant S538D prevented Gp78/AMFR-dependent degradation of mitofusin 1 and 2, large GTPases essential for mitochondrial fusion. Serum starvation reduced mitofusin degradation by wild-type Gp78/AMFR, but not dominant negative Gp78/AMFR S538A, an effect that was reversed by p38 MAPK inhibition. We also found that S538A Gp78/AMFR mutation promoted peripheral ER distribution, which is consistent with previous reports that Gp78/AMFR mediated ubiquitylation is initiated from the peripheral ER labelled by 3F3A mAb. In addition, we showed that S538D did not alter the turnover of Gp78/AMFR but did signal its proteasomal degradation. In contrast, Gp78/AMFR S538A sensitized Gp78/AMFR for lysosomal degradation, indicating that S538 phosphorylation is a critical determinant of the degradation pathway of this E3 ubiquitin ligase. Conclusion: By dissecting the epitope of the malignancy associated 3F3A mAb based on immunohistochemical analysis, this thesis represents the beginning of an understanding of the relationship between the surface cytokine receptor of AMF/PGI and ER-localized E3 ubiquitin ligase Gp78/AMFR. Moreover, it reveals the important role of serine phosphorylation in the regulation of the distribution, ubiquitin ligase activity and degradation pathway of Gp78/AMFR, thereby furthering our understanding of the mechanism of Gp78/AMFR promotion of cancer progression and metastasis.
Constraint satisfaction problems in clausal form
Creators: name: Kullmann, Oliver
Publisher: name: arXiv
Year: 2011
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.2.2
subject: 68R05

description: This is the report-version of a mini-series of two articles on the foundations of satisfiability of conjunctive normal forms with non-boolean variables, to appear in Fundamenta Informaticae, 2011. These two parts are here bundled in one report, each part yielding a chapter. Generalised conjunctive normal forms are considered, allowing literals of the form "variable not-equal value". The first part sets the foundations for the theory of autarkies, with emphasise on matching autarkies. Main results concern various polynomial time results in dependency on the deficiency. The second part considers translations to boolean clause-sets and irredundancy as well as minimal unsatisfiability. Main results concern classification of minimally unsatisfiable clause-sets and the relations to the hermitian rank of graphs. Both parts contain also discussions of many open problems.
description: 91 pages, to appear in Fundamenta Informaticae, 2011, as Constraint satisfaction problems in clausal form I: Autarkies and deficiency, Constraint satisfaction problems in clausal form II: Minimal unsatisfiability and conflict structure
title: Entwicklung eines kraftgeregelten Roboterentgratsystems mit Hilfe von Fuzzy-Logik
Creators: name: Liu, Mei-Hua
Publisher: name: De Gruyter
Year: 2021

description: In diesem Beitrag wird ein auf der Kraftregelung und der Fuzzy-Logik basierendes Roboterentgratkonzept vorgestellt. Ein Algorithmus zur On-line-Erkennung der Positionsungenauigkeiten und der Gratausprägung und darauf aufsetzend, ein Regelkonzept zur Erzeugung entsprechender Bahnkorrekturen, basierend auf der Normal- und Tangentialkraftregelung, werden entwickelt. Das neu vorgestellte Entgratkonzept und der Kraftregler werden mit Hilfe der Fuzzy-Logik ausgeführt, damit die Reglerparameter an den aktuellen Arbeitspunkt adaptiert werden, die Auswirkung der in Meßwerten enthaltenen Störungen vermindert wird, und das sprunghafte Verhalten beim Ausgleich der Positionsungenauigkeiten verhindert wird. Implementierung und experimentelle Ergebnisse des Entgratkonzeptes werden präsentiert und seine Eigenschaften in Relation zum Einsatz eines konventionellen ΡID-Reglers diskutiert.
20º Aniversário do Museu de Arte Sacra e Etnologia – Fátima
Creators: name: Cardoso, Gonçalo
name: Louro, Norberto
name: Duarte, Marco Daniel
Publisher: name: Lusitania Sacra
Year: 2011

description: Lusitania Sacra, n. 24 (2011): A República: Resistências e Acatamento a Nível Local
Emissions characterization of paired gaseous jets in a pilot-ignited natural-gas compression-ignition engine
Creators: name: Mabson, Christopher William John
Publisher: name: University of British Columbia
Year: 2015

description: Heavy-duty engines must meet strict emission standards and retain high fuel efficiency. This thesis examines a new type of fuel injector nozzle for a pilot-ignited direct-injection natural gas engine. The nozzle uses paired jets that increase mixing with air during combustion, which aims to reduce the amount of particulate matter (PM) formed. Tests were performed for different speeds and loads and over engine parameter sweeps (including timing, EGR, EQR, and diesel pilot mass) to compare the effects on the emissions to a single-hole nozzle. Low-PM strategies and morphology of the soot were compared as well. Contrary to expectations, the tests showed large increases in CO and PM from all the paired nozzles at all modes compared to the single-holed injector. Changing speed and load did not affect the relative emissions so further tests were only done with the paired nozzle that had the least emissions. The engine parameter sweeps at mid speed, high load (B75) showed similar emission patterns for the paired-hole nozzle and the single-hole nozzle. This suggests that the reasons for the high emissions lie in the characteristics of the jets, which are not changed much under normal HPDI operation. Injecting the natural gas before the pilot injection reduced PM. Late post-injection of some of the gas reduced PM by 50% without increasing other emissions for both injector types. Apparently, these strategies could work for other HPDI injectors. Compared to the reference injector, the paired-hole nozzle produced larger soot aggregates and larger numbers of particles but soot primary particle size showed different trends at different conditions. Soot fractal dimensions were the same and consistent with conventional diesel soot. CFD simulations showed that fuel packets moved through a richer high PM and CO forming zone during combustion for the paired nozzle. This high sooting zone had to be avoided either by further mixing or less mixing to avoid the high emissions produced. The results presented here were developed on a single-cylinder engine. While trends are expected to be similar to those from an equivalent multi-cylinder engine, emission levels and fuel consumption are not directly comparable to production multi-cylinder engines.
Direct simulation of the uniformly heated granular Boltzmann equation
Creators: name: Gamba, Irene M.
name: Rjasanow, Sergej
name: Wagner, Wolfgang
Publisher: name: Weierstrass Institute
Year: 2003
Subjects: subject: inelastic Boltzmann equation
subject: granular flow
subject: Monte Carlo algorithm
subject: 82C40
subject: 82C80
subject: 65R20

description: In the present paper we give an overview of the analytical properties of the steady state solution of the spatially homogeneous uniformly heated granular Boltzmann equation. The asymptotic properties of this distribution (so called tails) are formulated for different models of interaction. A new stochastic numerical algorithm for this problem is presented and tested using analytical relaxation of the temperature. The "tails" of the steady state distribution are computed using this algorithm and the results are compared with the available analytical information.
Magnetic curves corresponding to Killing magnetic fields in $E^3$
Creators: name: Druta-Romaniuc, Simona Luiza
name: Munteanu, Marian Ioan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A04, 65D17

description: We explicitly determine all magnetic curves corresponding to the Killing magnetic fields on the 3-dimensional Euclidean space.
description: 12 pages, 4 figures
Seminário «Os Livros de Horas do Palácio Nacional de Mafra e a Cultura Artística do Século XV»
Creators: name: Pereira, Patrícia Matias
Publisher: name: Lusitania Sacra
Year: 2011

description: Lusitania Sacra, n. 24 (2011): A República: Resistências e Acatamento a Nível Local
Fontaine's rings and p-adic L-functions
Creators: name: Tung, Shen-Ning
Publisher: name: University of British Columbia
Year: 2015

description: In the first part, we introduce theory of p-adic analysis for one variable p-adic functions and then use them to construct Kubota-Leopoldt p-adic L-functions. In the second part, we give a description of the Iwasawa modules attached to p-adic Galois representations of the absolute Galois group of K in terms of the theory of (φ,Γ)-modules of Fontaine. When the representation is de Rham when K be finite extension of Qp. This gives a natural construction of the exponential map of Perrin-Riou which is used in the construction and the study of p-adic L-functions. In the third part, we give formulas for Bloch-Kato’s exponential map and its dual for an alsolutely crystalline p-adic representation V . As a corollary of these computation, we can give a improved description of Perrin-Riou’s exponential map, which interpolates Bloch-Kato’s exponentials for the twists of V. Finally we use this map to reconstruct Kubota-Leopoldt p-adic L-functions.
Quantum criticality in an Ising chain: experimental evidence for emergent E8 symmetry
Creators: name: Coldea, R.
name: Tennant, D. A.
name: Wheeler, E. M.
name: Wawrzynska, E.
name: Prabhakaran, D.
name: Telling, M.
name: Habicht, K.
name: Smeibidl, P.
name: Kiefer, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Quantum phase transitions take place between distinct phases of matter at zero temperature. Near the transition point, exotic quantum symmetries can emerge that govern the excitation spectrum of the system. A symmetry described by the E8 Lie group with a spectrum of 8 particles was long predicted to appear near the critical point of an Ising chain. We realize this system experimentally by tuning the quasi-one-dimensional Ising ferromagnet CoNb2O6 through its critical point using strong transverse magnetic fields. The spin excitations are observed to change character from pairs of kinks in the ordered phase to spin-flips in the paramagnetic phase. Just below the critical field, the spin dynamics shows a fine structure with two sharp modes at low energies, in a ratio that approaches the golden mean as predicted for the first two meson particles of the E8 spectrum. Our results demonstrate the power of symmetry to describe complex quantum behaviours.
description: 18 pages with embedded figures
Modular RADAR: An Immune System Inspired Search and Response Strategy for Distributed Systems
Creators: name: Banerjee, Soumya
name: Moses, Melanie
Publisher: name: arXiv
Year: 2010
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: The Natural Immune System (NIS) is a distributed system that solves challenging search and response problems while operating under constraints imposed by physical space and resource availability. Remarkably, NIS search and response times do not scale appreciably with the physical size of the animal in which its search is conducted. Many distributed systems are engineered to solve analogous problems, and the NIS demonstrates how such engineered systems can achieve desirable scalability. We hypothesize that the architecture of the NIS, composed of a hierarchical decentralized detection network of lymph nodes (LN) facilitates efficient search and response. A sub-modular architecture in which LN numbers and size both scale with organism size is shown to efficiently balance tradeoffs between local antigen detection and global antibody production, leading to nearly scale-invariant detection and response. We characterize the tradeoffs as balancing local and global communication and show that similar tradeoffs exist in distributed systems like LN inspired artificial immune system (AIS) applications and peer-to-peer (P2P) systems. Taking inspiration from the architecture of the NIS, we propose a modular RADAR (Robust Adaptive Decentralized search with Automated Response) strategy for distributed systems. We demonstrate how two existing distributed systems (a LN inspired multi-robot control application and a P2P system) can be improved by a modular RADAR strategy. Such a sub-modular architecture is shown to balance the tradeoffs between local communication (within artificial LNs and P2P clusters) and global communication (between artificial LNs and P2P clusters), leading to efficient search and response.
description: 14 pages, 3 figures, scale invariant detection and response, distributed systems, scale invariant response, scale invariant detection, immune system scaling, modular search, modular architecture, sub-modular architecture, peer-to-peer systems, artificial immune systems, immune system modelling, intrusion detection systems, malware detection systems, mobile ad-hoc networks
title: Kontinuierlicher Rührkesselreaktor mit Neben- und Folgereaktionen
Creators: name: Bettenhausen, Kurt Dirk
Publisher: name: De Gruyter
Year: 2021

description: Für den simulierten Beispielprozeß eines kontinuierlich arbeitenden Rührkesselreaktors mit Neben- und Folgereaktionen und nur ungenau bekannten Prozeßparametern wurden Untersuchungen zum Entwurf eines Reglers auf der Basis unscharf formulierter Regeln durchgeführt. Die dabei erzielten Ergebnisse, sowohl in bezug auf die erreichte Qualität der Regelung, als auch allgemein ableitbare Formalismen zum methodischen Entwurf eines Fuzzy-Reglers sind der Inhalt der vorliegenden Arbeit.
Early life influences on adult sleep and health risk indicators : examining mediational relationships
Creators: name: Talbot Ellis, Alena
Publisher: name: University of British Columbia
Year: 2015

description: Evidence suggests that early life stress increases risk for cardiovascular disease in adulthood. However, less is known about how early life experiences propagate risk into adulthood. The current study examines a potentially critical mediator of the relationship between early life stress and disease outcomes, namely poor sleep. Early life stress was hypothesized to contribute to poor sleep, as well as to other physiological health risk indicators (i.e., BP and BMI), by affecting adult psychosocial functioning. Further, poor sleep was examined as a mediator between adult psychosocial functioning and BP and BMI. An online sample and a university population sample completed measures of early life stress (i.e., a measure of childhood socioeconomic status and the risky family questionnaire), along with measures of adult psychosocial functioning and sleep quality. The university sample also participated in a 6-night actigraphy assessment to obtain objective sleep measurements. Results indicated that adult psychosocial functioning mediated the relationship between family risk in childhood and poorer subjective sleep quality for both sample populations. However, in the university sample, family risk also demonstrated a direct effect with respect to poorer subjective sleep quality, as well with respect to a latent factor reflecting physical restlessness and wakefulness during the sleep period. Family risk also demonstrated an indirect relationship with sleep length, largely via relationships with social support. Results did not suggest that family risk was associated with adult BP or BMI. However, in the university sample, social support, perceived stress, and negative affect were found to be significant predictors of BMI, and social support was found to be predictive of BP indices. Hypotheses examining sleep as a mediator of the relationship between psychosocial variables and BP and BMI were not well supported. Overall, results suggest that an adverse early childhood environment is a potentially important determinant of adult psychosocial and sleep functioning, which in turn may increase disease risk.
The Relativity of Simultaneity: An Analysis Based on the Properties of Electromagnetic Waves
Creators: name: Wayne, Randy
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The determination of whether two distant events are simultaneous depends on the velocity of the observer. This velocity dependence is typically explained in terms of the relativity of space and time in a counterintuitive manner by the Special Theory of Relativity. In this paper, I describe a straightforward and intuitive way to explain the velocity dependence of simultaneity in terms of velocity-dependent changes in the spatial (k, λ) and temporal (ω, ν) characteristics of electromagnetic waves that result from the Doppler effect. Since, for any solution to a wave equation, the angular wave vector (k) and distance vector (r) as well as the angular frequency (ω) and time (t) are complementary pairs (k *r) and (ωt), it is only a matter of taste which members of the pairs (k, ω) or (r, t) one assumes to depend on the relative velocity of the source and observer. Einstein chose r and t and I chose k and ω. I present this electromagnetic wave approach to understanding the velocity dependence of simultaneity as a physically realistic alternative to Einstein's Special Theory of Relativity.
description: 13 pages, 6 figures
Coherently coupled bright optical solitons and their collisions
Creators: name: Kanna, T.
name: Jayanthi, M. Vijaya
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We obtain explicit bright one- and two-soliton solutions of the integrable case of the coherently coupled nonlinear Schr{ö}dinger equations by applying a non-standard form of the Hirota's direct method. We find that the system admits both degenerate and non-degenerate solitons in which the latter can take single hump, double hump, and flat-top profiles. Our study on the collision dynamics of solitons in the integrable case shows that the collision among degenerate solitons and also the collision of non-degenerate solitons are always standard elastic collisions. But the collision of a degenerate soliton with a non-degenerate soliton induces switching in the latter leaving the former unaffected after collision, thereby showing a different mechanism from that of the Manakov system.
description: 16 pages, 4 figures,Accepted in J.Phys.A: Math.Theor
Are There Rotation Measure Gradients Across AGN Jets?
Creators: name: Taylor, G. B.
name: Zavala, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report on multi-frequency polarimetry Very Long Baseline Interferometry observations of active galactic nuclei using the VLBA. These observations are used to construct images of the Faraday Rotation Measure (RM) in J1613+342, Mrk 501, 3C 371, and BL Lac. Despite having resolved the jets in total intensity and polarization for three of these sources no RM gradients are found. This is in contrast to the large fraction of sources with RM gradients now claimed in the literature, and invoked as evidence in support of helical magnetic fields. We propose objective criteria for establishing what constitutes an RM gradient. Furthermore, although we note the absence of simple, monotonic gradients, comparison with simulations could reveal systematic changes in the RM which may be masked by a varying jet orientation.
description: 5 pages, 4 figures, accepted to Astrophysical Journal Letters
Synchro-Curvature Self-Compton Radiation of Electrons in Curved Magnetic Fields
Creators: name: Zhang, Bo
name: Dai, Zi-Gao
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper we present the spectrum of synchro-curvature self-Compton (SCSC) radiation of relativistic electrons with a power-law distribution of Lorentz factors. We find that the resulting spectrum is significantly different from that of either synchrotron self-Compton or curvature self-Compton radiation if both the curvature radius of the magnetic field and the cyclotron radius of the electrons are within some proper ranges. The effects of electrons' cooling and drifting, the low-energy self absorption in seed spectra, and the Klein-Nishina cutoff are also discussed, in order to get an accurate picture. We take gamma-ray bursts (GRBs) as our example environment for discussions. The results would be considered as a universal approach of the self-Compton emission of relativistic electrons moving in curved magnetic fields, and thus could be applied to many astrophysical phenomena, including GRBs, active galactic nuclei (AGNs), and pulsars.
description: 9 pages, 11 figures, accepted for publication in MNRAS
title: Lernende Regelung von Totzeitprozessen
Creators: name: Seitz, Matthias
name: Kurz, Andreas
name: Tolle, Henning
Publisher: name: De Gruyter
Year: 2021

description: Zum Entwurf von Regelsystemen mit unbekannter oder mathematisch nur schwer modellierbarer Strecke eignen sich neben adaptiven Verfahren vor allem lernende Konzepte. Zur Regelung solcher Prozesse mit a priori unbekannter Totzeit wird ein prädiktiver Regler in den lernenden Regelkreis integriert. Hierfür muß die unbekannte Prozeßtotzeit ermittelt werden. Eine Gegenüberstellung einiger Verfahren, die die Totzeit identifizieren, sowie ihre Anwendung in einem simulierten Beispiel erörtert der folgende Aufsatz.
Graphene nanoribbons from unzipped carbon nanotubes: atomic structures, Raman spectroscopy and electrical properties
Creators: name: Xie, Liming
name: Wang, Hailiang
name: Jin, Chuanhong
name: Wang, Xinran
name: Jiao, Liying
name: Suenaga, Kazu
name: Dai, Hongjie
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigated the atomic structures, Raman spectroscopic and electrical transport properties of individual graphene nanoribbons (GNRs, widths ~10-30 nm) derived from sonochemical unzipping of multi-walled carbon nanotubes (MWNTs). Aberration-corrected transmission electron microscopy (TEM) revealed a high percentage of two-layer (2L) GNRs and some single layer ribbons. The layer-layer stacking angles ranged from 0o to 30o including average chiral angles near 30o (armchair orientation) or 0o (zigzag orientation). A large fraction of GNRs with bent and smooth edges was observed, while the rest showing flat and less smooth edges (roughness \leq 1 nm). Polarized Raman spectroscopy probed individual GNRs to reveal D/G ratios and ratios of D band intensities at parallel and perpendicular laser excitation polarization (D///D\bot). The observed spectroscopic trends were used to infer the average chiral angles and edge smoothness of GNRs. Electrical transport and Raman measurements were carried out for individual ribbons to correlate spectroscopic and electrical properties of GNRs.
description: 9 pages and 4 figures for manuscript and 11 pages and 12 figures for supporting information