cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Engineered Optical Nonlocality in Nanostructured Metamaterials
Creators: name: Orlov, Alexey A.
name: Voroshilov, Pavel M.
name: Belov, Pavel A.
name: Kivshar, Yuri S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We analyze dispersion properties of metal-dielectric nanostructured metamaterials. We demonstrate that, in a sharp contrast to the results for the corresponding effective medium, the structure demonstrates strong optical nonlocality due to excitation of surface plasmon polaritons that can be engineered by changing a ratio between the thicknesses of metal and dielectric layers. In particular, this nonlocality allows the existence of an additional extraordinary wave that manifests itself in the splitting of the TM-polarized beam scattered at an air-metamaterial interface.
Biocatalytic Reaction and Process Development using a Coiled Flow Inverter - From Reactor Concept to Ontology Design
Creators: name: Rosenthal, Katrin
name: Behr, Alexander
name: Grühn, Julia
name: Talha Eroglu
name: Trögel, Valentin
name: Kockmann, Norbert
Publisher: name: Zenodo
Year: 2021

description: Poster presented at the ECAB 6 - 6th European Congress of Applied Biotechnology, 20. - 23.09.2021, virtual event
Long stroke magnetic levitation planar stages
Creators: name: Usman, Irfan-Ur-Rab
Publisher: name: University of British Columbia
Year: 2020

description: Modern positioning applications often require long strokes in multiple degrees-of-freedom (DOF). One solution to such requirements is a planar stage capable of simultaneous large strokes in X- and Y-translation. An ideal stage concept is based on a planar motor which uses non-contact multi-axis forces to directly actuate a single moving body, without any connecting elements or bearings structures that would induce additional structural modes as well as excess inertia. This thesis presents the design, analysis and experimental results of two planar motors: 1) a permanent magnet synchronous planar motor, and 2) a permanent magnet asynchronous planar motor. The permanent magnet synchronous planar motor is comprised of multiple one-dimensional (1-D) magnet arrays attached to a moving stage and multiple stationary 1-D coils built as a printed circuit board (https://www.youtube.com/watch?v=-r4Tv7GbB8o). This motor addresses many issues with existing synchronous planar levitation motors, including scalability of the XY stroke with minimal increase in controller or drive complexity, and simplified commutation and control due to natural force/torque decoupling and no coil/magnet array edge effects. Modeling, analysis and design of a prototype are shown with motion control results. To use this levitation motor for high accuracy positioning applications, force and torque characteristics of the 6-DOF stage must be highly linear in all axes in order to minimize controller effort and reduce intrinsic motor disturbances. Novel magnet array designs are presented which self-attenuate both force and torque ripple in all 6-DOF, without additional controller or drive complexity. These array designs are tested via simulation and experiment. The permanent magnet asynchronous planar motor is based on the asynchronous induction effect to simultaneously levitate and propel the motion stage. The advantages of this type of planar levitation motor are: 1) passive stability in all axes; and 2) simple slab-type homogenous stator comprised of a basic conducting material such as aluminum or copper. This thesis presents novel modeling and analysis and provides a new analytical expression for the generated levitation force and torque with geometric and material property inputs. Experimental force and torque measurements are carried out and compared to the analytical model.
Robust preparation and manipulation of protected qubits using time--varying Hamiltonians
Creators: name: Coudreau, Thomas
name: Doucot, Benoit
name: Dubessy, Romain
name: Andreoli, Daria
name: Milman, Pérola
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that it is possible to initialize and manipulate in a deterministic manner protected qubits using time varying Hamiltonians. Taking advantage of the symmetries of the system, we predict the effect of the noise during the initialization and manipulation. These predictions are in good agreement with numerical simulations. Our study shows that the topological protection remains efficient under realistic experimental conditions.
description: To be published in Phys. Rev. Lett
Complexity dichotomy on partial grid recognition
Creators: name: de Sá, Vinícius G. P.
name: da Fonseca, Guilherme D.
name: Machado, Raphael
name: de Figueiredo, Celina M. H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Deciding whether a graph can be embedded in a grid using only unit-length edges is NP-complete, even when restricted to binary trees. However, it is not difficult to devise a number of graph classes for which the problem is polynomial, even trivial. A natural step, outstanding thus far, was to provide a broad classification of graphs that make for polynomial or NP-complete instances. We provide such a classification based on the set of allowed vertex degrees in the input graphs, yielding a full dichotomy on the complexity of the problem. As byproducts, the previous NP-completeness result for binary trees was strengthened to strictly binary trees, and the three-dimensional version of the problem was for the first time proven to be NP-complete. Our results were made possible by introducing the concepts of consistent orientations and robust gadgets, and by showing how the former allows NP-completeness proofs by local replacement even in the absence of the latter.
MPEC 2024-S52 : 2024 SR
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 SR

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Gauge duality and low-rank spectral optimization
Creators: name: De Albuquerque Macêdo Júnior, Ives José
Publisher: name: University of British Columbia
Year: 2015

description: The emergence of compressed sensing and its impact on various applications in signal processing and machine learning has sparked an interest in generalizing its concepts and techniques to inverse problems that involve quadratic measurements. Important recent developments borrow ideas from matrix lifting techniques in combinatorial optimization and result in convex optimization problems characterized by solutions with very low rank, and by linear operators that are best treated with matrix-free approaches. Typical applications give rise to enormous optimization problems that challenge even the very best workhorse algorithms and numerical solvers for semidefinite programming. The work presented in this thesis focuses on the class of low-rank spectral optimization problems and its connection with a theoretical duality framework for gauge functions introduced in a seminal paper by Freund (1987). Through this connection, we formulate a related eigenvalue optimization problem more amenable to the design of specialized algorithms that scale well and can be used in practical applications. We begin by exploring the theory of gauge duality focusing on a slightly specialized structure often encountered in the motivating inverse problems. These developments are still made in a rather abstract form, thus allowing for its application to different problem classes. What follows is a connection of this framework with two important classes of spectral optimization problems commonly found in the literature: trace minimization in the cone of positive semidefinite matrices and affine nuclear norm minimization. This leads us to a convex eigenvalue optimization problem with rather simple constraints, and involving a number of variables equal to the number of measurements, thus with dimension far smaller than the primal. The last part of this thesis exploits a sense of strong duality between the primal-dual pair of gauge problems to characterize their solutions and to devise a method for retrieving a primal minimizer from a dual one. This allows us to design and implement a proof of concept solver which compares favorably against solvers designed specifically for the PhaseLift formulation of the celebrated phase recovery problem and a scenario of blind image deconvolution.
Estimation of the number of biophotons involved in the visual perception of a single-object image: Biophoton intensity can be considerably higher inside cells than outside
Creators: name: Bokkon, I.
name: Salari, V.
name: Tuszynski, J.
name: Antal, I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Biological sciences

description: Recently, we have proposed a redox molecular hypothesis about the natural biophysical substrate of visual perception and imagery (Bókkon, 2009. BioSystems; Bókkon and D'Angiulli, 2009. Bioscience Hypotheses). Namely, the retina transforms external photon signals into electrical signals that are carried to the V1 (striate cortex). Then, V1 retinotopic electrical signals (spike-related electrical signals along classical axonal-dendritic pathways) can be converted into regulated ultraweak bioluminescent photons (biophotons) through redox processes within retinotopic visual neurons that make it possible to create intrinsic biophysical pictures during visual perception and imagery. However, the consensus opinion is to consider biophotons as by-products of cellular metabolism. This paper argues that biophotons are not by-products, other than originating from regulated cellular radical/redox processes. It also shows that the biophoton intensity can be considerably higher inside cells than outside. Our simple calculations, within a level of accuracy, suggest that the real biophoton intensity in retinotopic neurons may be sufficient for creating intrinsic biophysical picture representation of a single-object image during visual perception.
description: 16 pages, 3 figures
Student usage of open educational resource learning materials in algebra 2
Creators: name: Applebee, Jennifer
Publisher: name: No Publisher Supplied
Year: 2019

description: The cost of college course materials has increased dramatically in recent years.  Traditional publishers advocate the use of lower-cost digital and custom editions, but both options have limitations in their ability to save students money (Senack & Donoghue, 2016). Open-educational resources (OER) are openly-licensed materials that may be used for free for educational purposes.  OER are gaining in popularity as a viable alternative to traditionally published materials.  Students have reported finding OER to be of equal or better quality when compared to traditional materials, and course outcomes have not been negatively impacted when OER materials are adopted (Colvard, Watson, & Park, 2018).The purpose of this study was to describe the implementation of OER resources in a developmental Algebra 2 class for community college students who have declared non-STEM majors.  The resources included a student workbook, associated videos, and an online homework tool which were cultivated to align with the Algebra 2 learning outcomes.  Surveys and interviews were used to examine student and faculty perceptions of the OER materials.  Final exam data indicated that there were no significant differences in the outcomes of students who used the OER resources and those who used the traditional resources.  Students generally had positive reactions to the OER materials used in this study, particularly the videos.  Interestingly, students used the OER online homework tool in more ways than students used the traditional online homework tool.  Faculty believed that students interacted with the OER materials with greater frequency than students who used traditional materials.  In addition to the positive reactions, areas for improvement of the OER materials were noted.  Specifically, students described a lack of written worked examples in the online and print materials, while also acknowledging the benefits of the available video worked examples.The results of this study will be used to inform course material adoption decisions at the study location.  The findings build confidence that OER materials are a viable option for community college mathematics course and provide direction when selecting and developing such materials.
HISTÓRIA Religiosa de Portugal. Dir. de Carlos Moreira Azevedo. Vol. 1: Formação e limites da Cristandade. Coord. de Ana Maria C. M. Jorge;Ana Maria S.A. Rodrigues. Lisboa: Círculo de Leitores, 2000. XXVII, 544 p.
Creators: name: Duarte, Luís Miguel
Publisher: name: Lusitania Sacra
Year: 2003

description: Lusitania Sacra, n. 15 (2003): Poder, Sociedade e Religião na Época Moderna
Inverse-kinematics one-neutron pickup with fast rare-isotope beams
Creators: name: Gade, A.
name: Tostevin, J. A.
name: Baugher, T.
name: Bazin, D.
name: Brown, B. A.
name: Campbell, C. M.
name: Glasmacher, T.
name: Grinyer, G. F.
name: McDaniel, S.
name: Meierbachtol, K.
name: Ratkiewicz, A.
name: Stroberg, S. R.
name: Walsh, K. A.
name: Weisshaar, D.
name: Winkler, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: New measurements and reaction model calculations are reported for single neutron pickup reactions onto a fast \nuc{22}{Mg} secondary beam at 84 MeV per nucleon. Measurements were made on both carbon and beryllium targets, having very different structures, allowing a first investigation of the likely nature of the pickup reaction mechanism. The measurements involve thick reaction targets and $γ$-ray spectroscopy of the projectile-like reaction residue for final-state resolution, that permit experiments with low incident beam rates compared to traditional low-energy transfer reactions. From measured longitudinal momentum distributions we show that the $\nuc{12}{C} (\nuc{22}{Mg},\nuc{23}{Mg}+γ)X$ reaction largely proceeds as a direct two-body reaction, the neutron transfer producing bound \nuc{11}{C} target residues. The corresponding reaction on the \nuc{9}{Be} target seems to largely leave the \nuc{8}{Be} residual nucleus unbound at excitation energies high in the continuum. We discuss the possible use of such fast-beam one-neutron pickup reactions to track single-particle strength in exotic nuclei, and also their expected sensitivity to neutron high-$\ell$ (intruder) states which are often direct indicators of shell evolution and the disappearance of magic numbers in the exotic regime.
description: 8 pages, 5 figures
การพัฒนาระบบการตรวจสอบโครงสร้างหลักสูตรนักศึกษา มหาวิทยาลัยราชภัฏสุรินทร์
Creators: name: มยุรา กระโพธิ์
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2023
Subjects: การพัฒนาระบบ
ระบบฐานข้อมูล
โครงสร้างหลักสูตร

description: วารสารราชภัฏสุรินทร์วิชาการ, 1, 2, 27-42
College Student Perspectives on Employable Skills that Matter
Creators: name: Mata, Michele
Publisher: name: Columbia University
Year: 2019
Subjects: Education, Higher
College students
College graduates--Employment--Attitudes
College students--Attitudes
Education--Curricula

description: The purpose of this study is to determine whether two types of higher education curricula (open and core curriculum) affect students’ importance of 38 employable skills within their respective institutions. Through mixed methodological methods, 88 students from an elite university with an open curriculum and 78 students from an elite university with a core curriculum answered survey questions. Three students with an open curriculum were interviewed and two students with a core curriculum were interviewed. The findings indicate there are differences in students’ importance of employable skills based on internal (e.g. student membership) and external factors (e.g. demographics). In particular, first-generation college students and college grade level showed the most differences within their groups in contrasting skill importance. The results demonstrate that even though curriculum is important, it is not the only factor in students’ importance of employability skills.
Melting of solids in liquid titanium during electron beam processing
Creators: name: Ou, Jun
Publisher: name: University of British Columbia
Year: 2015

description: Both experiments and numerical modeling work have been carried out to understand the phenomena contributing to the melting of solid condensate in liquid titanium alloys during Electron Beam Cold Hearth Re-melting (EBCHR). To begin, ice/water and ethanol/water analogue physical models were adopted to study the melting of a low melting point solid introduced into liquid and to provide data suitable for developing a comprehensive numerical-based modeling framework. The results revealed that thermal and compositional driven buoyancy and surface tension (Marangoni) flows, when present, can have a significant impact on solid melting in a system where forced convection is not significant. In work that followed, the melting behavior of Commercial Purity Titanium (CP-Ti) rods in liquid CP-Ti was investigated with the aid of an Electron Beam Button Furnace (EBBF) to examine the melting kinetics in the titanium system in the absence of compositional effects. The results showed that the liquid titanium initially froze onto the cold rod when it was immersed, resulting in the formation of a solid/solid interface that acted to retard melting when present. Data collected from the experiments included the evolution in the solid profile of the rod with time and the evolution in temperature obtained from a thermocouple embedded in the rod. The numerical modeling framework developed for the ethanol/water system was modified and applied to support analysis of the experimental results including the determination of an effective interfacial heat transfer coefficient (EIHTC). A similarity solution was also developed to assess the numerical model derived EIHTC. In the final phase of the study, work was conducted on Ti-Al solid rods partially immersed in liquid CP-Ti and liquid Ti-6wt%Al-4wt%V (Ti64) as a means of approximating the behavior of condensate in industry. The melting behavior of Ti-Al was observed to differ significantly from that of CP-Ti rods. Despite having a lower melting point, the Ti-Al rod was found to heat up and melt at a much slower rate. Metallographic examination of partially melted rods and a sensitivity analysis conducted with the numerical model has been able to partially, but not fully explain this difference.
Nondifferentiable variational principles in terms of a quantum operator
Creators: name: Almeida, Ricardo
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 26A27, 26B20, 39A13, 49K05, 49K10, 49S05

description: We develop Cresson's nondifferentiable calculus of variations on the space of Hölder functions. Several quantum variational problems are considered: with and without constraints, with one and more than one independent variable, of first and higher-order type.
description: Submitted 24-Apr-2011; revised 18-Jun-2011; accepted 20-Jun-2011; for publication in Mathematical Methods in the Applied Sciences
Role of Fluorescent In Situ Hybridization, Cholangioscopic Biopsies, and EUS‐FNA in the Evaluation of Biliary Strictures
Creators: name: Brooks, Christian
name: Gausman, Valerie
name: Kokoy-Mondragon, Chanthel Melissa
name: Munot, Khushboo
name: Amin, Sunil P.
name: Desai, Amit
name: Kipp, Claudine
name: Poneros, John M.
name: Sethi, Amrita
name: Gress, Frank G.
name: Kahaleh, Michel
name: Vundavalli, Murty V.
name: Sharaiha, Reem
name: Gonda, Tamas A.
Publisher: name: Columbia University
Year: 2018
Subjects: Pathology, Cellular
Biliary tract--Cancer
Biliary tract--Diseases--Diagnosis
Fluorescence in situ hybridization
Endoscopic ultrasonography

description: Background and Aims: Our goal was to compare the diagnostic accuracy of FISH in the detection of malignancy compared with other standard diagnostic modalities, including brush cytology and biopsy specimens over a 10-year period of prospective data collection. Methods: We conducted a review of all consecutive biliary strictures evaluated between 2006 and 2016. Patients with a final pathologic diagnosis or conclusive follow-up were included. We evaluated the performance of FISH polysomy (CEP 3, 7, and 17) and 9p21 deletion as well as cholangioscopic biopsy (CBx) and EUS-FNA. Statistical analysis was performed with the Mann–Whitney U and Fisher’s exact tests. Results: Of 382 patients with indeterminate strictures, 281 met inclusion criteria. Forty-nine percent were malignant. Cytology, FISH polysomy, and FISH polysomy/9p21 showed a specificity of 99.3%. FISH polysomy/9p21 as a single modality was the most sensitive at 56% (p < 0.001). The sensitivity of FISH polysomy/9p21 and cytology was significantly higher than cytology alone at 63 versus 35% (p < 0.05). EUS-FNA for distal strictures and CBx for proximal strictures increased sensitivity from 33 to 93% (p < 0.001) and 48–76% (p = 0.05) in cytology-negative strictures. Conclusions: The high specificity of FISH polysomy/9p21 suggests that a positive result is sufficient for diagnosing malignancy in indeterminate strictures. The significantly higher sensitivity of FISH polysomy/9p21 compared to cytology supports the use of FISH in all non-diagnostic cases. Although both EUS-FNA and CBx were complimentary, our results suggest that distal strictures should be evaluated by EUS initially. Proximal strictures may be evaluated by FISH first and then by CBx if inconclusive.
If only there were no liquidity constraints
Creators: name: Krabichler, Thomas
Publisher: name: Zenodo
Year: 2019
Subjects: Arbitrage
Bessel process
Change of numéraire
Ineligible numéraire
Liquidity

description: Based on a simple stochastic model, we illustrate that an ineligible change of numéraire leads to arbitrage opportunities. This observation is particularly interesting in the current low interest rate environment, where one could generate less expensive zero-coupon bonds.
description: + Reihe: IFZ Working Paper, 0007/2019 + ISSN: 1662-520X
O Regimento dos Auditórios Eclesiásticos do Bispado do Funchal (1589)
Creators: name: Trindade, Cristina
name: Teixeira, Dulce Manuela
Publisher: name: Lusitania Sacra
Year: 2003

description: Lusitania Sacra, n. 15 (2003): Poder, Sociedade e Religião na Época Moderna
Foundations of cultural learning
Creators: name: Zhao, Wanying
Publisher: name: University of British Columbia
Year: 2015

description: To acquire their local culture, infants must identify good cultural models to learn from. Doing so successfully requires learners to evaluate others’ qualities as potential knowledge sources. The following body of research examines how the youngest humans identify good sources of conventional behaviours—a domain of cultural knowledge that lacks inherent properties for evaluation. Chapter 2 examines infants’ preferences for individuals who performed a consensus action vs. an oft-­‐repeated action. Results revealed that preverbal infants are capable of making complex, context-­‐dependent evaluations, favouring conformists when the targets’ prior knowledge cannot be assumed, and preferring mavericks when it can. Chapter 3 extends these results by showing that preschool aged children use some of these same cues to identify who may be good to learn from. Chapter 4 investigates infants’ use of observed emotional communications to choose between social and asocial targets. Cultural and domain differences were found for 12 month old infants: target preferences were influenced by emotional reactions directed at social targets, but not by emotional reactions directed at asocial targets. A differential response to positive and negative emotional reaction only reliably affected European Canadian infants’ choices, but not East Asian infants, nor European and East Asian mixed infants. Chapter 5 investigated how parents convey evaluative messages about objects during interactions with infants, and explored cultural differences in these pedagogical interactions. Results hint at cultural differences in the amount of valence congruent utterances caregivers make, resulting in differential experience with emotional communications as a means of learning about the world.
title: Model driven language engineering
Creators: name: Patrascoiu, Octavian
Publisher: name: University of Kent
Year: 2021

description: Modeling is a most important exercise in software engineering and development and one of the current practices is object-oriented (OO) modeling. The Object Management Group (OMG) has defined a standard object-oriented modeling language the Unified Modeling Language (UML). The OMG is not only interested in modeling languages; its primary aim is to enable easy integration of software systems and components using vendor-neutral technologies. This thesis investigates the possibilities for designing and implementing modeling frameworks and transformation languages that operate on models and to explore the validation of source and target models. Specifically, we will focus on OO models used in OMG's Model Driven Architecture (MDA), which can be expressed in terms of UML terms (e.g. classes and associations). The thesis presents the Kent Modeling Framework (KMF), a modeling framework that we developed, and describes how this framework can be used to generate a modeling tool from a model. It then proceeds to describe the customization of the generated code, in particular the definition of methods that allows a rapid and repeatable instantiation of a model. Model validation should include not only checking the well-formedness using OCL constraints, but also the evaluation of model quality. Software metrics are useful means for evaluating the quality of both software development processes and software products. As models are used to drive the entire software development process it is unlikely that high quality software will be obtained using low quality models. The thesis presents a methodology supported by KMF that uses the UML specification to compute the design metrics at an early stage of software development. The thesis presents a transformation language called YATL (Yet Another Transformation Language), which was designed and implemented to support the features provided by OMG's Request For Proposal and the future QVT standard. YATL is a hybrid language (a mix of declarative and imperative constructions) designed to answer the Query/Views/Transformations Request For Proposals issued by OMG and to express model transformations as required by the Model Driven Architecture (MDA) approach. Several examples of model transformations, which have been implemented using YATL and the support provided by KMF, are presented. These experiments investigate different knowledge areas as programming languages, visual diagrams and distributed systems. YATL was used to implement the following transformations: * UML to Java mapping * Spider diagrams to OCL mapping * EDOC to Web Services
Structural and Physical Properties of CaFe4As3 Single Crystals
Creators: name: Karki, A. B.
name: McCandless, G. T.
name: Stadler, S.
name: Xiong, Y. M.
name: Li, J.
name: Chan, Julia Y.
name: Jin, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the synthesis, and structural and physical properties of CaFe4As3 single crystals. Needle-like single crystals of CaFe4As3 were grown out of Sn flux and the compound adopts an orthorhombic structure as determined by X-ray diffraction measurements. Electrical, magnetic, and thermal properties indicate that the system undergoes two successive phase transitions occurring at TN1 ~ 90 K and TN2 ~ 26 K. At TN1, electrical resistivities (ρ(b) and ρ(ac)) are enhanced while magnetic susceptibilities (χ(b) and χ(ac)) are reduced in both directions parallel and perpendicular to the b-axis, consistent with the scenario of antiferromagnetic spin-density-wave formation. At TN2, specific heat reveals a slope change, and χ(ac) decreases sharply but χ(b) has a clear jump before it decreases again with decreasing temperature. Remarkably, both ρ(b) and ρ(ac) decrease sharply with thermal hysteresis, indicating the first-order nature of the phase transition at TN2. At low temperatures, ρ(b) and ρ(ac) can be described by ρ = ρ0 + AT^α(ρ0, A, and α are constants). Interestingly, these constants vary with applied magnetic field. The ground state of CaFe4As3 is discussed.
description: 15 pages, 8 figures, Submitted to Physical Review B
Examining the role of Myt3 in beta-cell function and survival
Creators: name: Tennant, Bryan Ruthven
Publisher: name: University of British Columbia
Year: 2015

description: Diabetes is a chronic disease that results from the body’s inability to properly control circulating blood glucose levels. The loss of glucose homeostasis can arise either from a loss of β-cell mass because of immune-cell mediated attack, as in T1D, and/or from dysfunction of individual β-cells (in conjunction with target organ insulin resistance), as in T2D. Despite advances in current therapies to treat diabetes we are still far from a cure, and a greater understanding of the transcriptional pathways regulating islet development, function and survival will be critical if we are to achieve this goal. The aims of this dissertation were to delineate the role of the transcription factor Myt3 in β-cell function and survival. To this end we first examined the regulatory mechanisms involved in the control of Myt3 expression. We demonstrate that Myt3 expression is dependent on important islet transcription factors, including Foxa2, Pdx1 and Neurod1. We further established that Myt3 expression is regulated both developmentally, likely by the aforementioned factors, and by external stimuli including glucose and cytokines. From these early results we explored the effect of Myt3 suppression on the function and survival of β-cells. Our data show that reduced levels of Myt3 impair the ability of β-cells to migrate, which has potential implications for islet formation during development and compensatory islet neogenesis during diabetes progression, and leads to increased apoptosis. Lastly, to confirm these effects in vivo we studied the effects of Myt3 suppression in syngeneic islet transplants. Our data show that reduced Myt3 results in increased cell death in the grafts. Collectively, the data presented in this dissertation are an important step in clarifying the regulatory networks responsible for β-cell development, function and survival, and point to Myt3 as a potential therapeutic target for improving functional β-cell mass.
New determination of the fine structure constant and test of the quantum electrodynamics
Creators: name: Bouchendira, Rym
name: Cladé, Pierre
name: Guellati-Khélifa, Saïda
name: Nez, François
name: Biraben, François
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report a new measurement of the ratio $h/m_{\mathrm{Rb}}$ between the Planck constant and the mass of $^{87}\mathrm{Rb}$ atom. A new value of the fine structure constant is deduced, $α^{-1}=137.035\,999\,037\,(91)$ with a relative uncertainty of $6.6\times 10^{-10}$. Using this determination, we obtain a theoretical value of the electron anomaly $a_\mathrm{e}=0.001~159~652~181~13(84)$ which is in agreement with the experimental measurement of Gabrielse ($a_\mathrm{e}=0.001~159~652~180~73(28)$). The comparison of these values provides the most stringent test of the QED. Moreover, the precision is large enough to verify for the first time the muonic and hadronic contributions to this anomaly.
Un manuscrito, dos diccionarios y algunas perspectivas historiográficas para el estudio de la historia religiosa de la época moderna
Creators: name: Palomo, Federico
Publisher: name: Lusitania Sacra
Year: 2003

description: O estudo visa introduzir a discussão sobre a pertinência de alguns conceitos que têm vindo a ser equacionados, nos últimos anos, no âmbito da História religiosa europeia dos séculos XVI a XVIII. A ideia da «disciplina» e do «disciplinamento social», tal como o paradigma da «confessionalização católica», são apresentados como instrumentos para a interpretação, no quadro da Península Ibérica, de uma história religiosa atenta aos factores políticos, sociais e culturais que envolviam as acções e instrumentos utilizados pelos actores e grupos religiosos da época, no intuito de «conduzir as condutas» das populações. À análise, realizada em função da produção historiográfica existente, de alguns dos dispositivos de coerção implementados pelas autoridades eclesiásticas, e que visavam a correcção dos comportamentos morais e sociais dos fiéis, seguem-se algumas reflexões em torno dos instrumentos de persuasão e das múltiplas formas de transmissão da mensagem religiosa desenvolvidas pelos agentes eclesiásticos da época, a fim de facilitar a socialização e a interiorização dos modelos religiosos e de conduta propostos pelo discurso do catolicismo moderno.
description: Lusitania Sacra, n. 15 (2003): Poder, Sociedade e Religião na Época Moderna
Cytogenetic analysis of 130 renal oncocytomas identify three distinct and mutually exclusive diagnostic classes of chromosome aberrations
Creators: name: Anderson, Christopher B.
name: Lipsky, Michael
name: Nandula, Subhadra
name: Freeman, Christopher Edward
name: Matthews, Thomas
name: Walsh, Caitlin
name: Li, Gen
name: Szabolcs, Matthias
name: Mansukhani, Mahesh M.
name: McKiernan, James M.
name: Vundavalli, Murty V.
Publisher: name: Columbia University
Year: 2019
Subjects: Cytogenetics
Karyotypes
Kidneys
Tumors
Pathology, Cellular

description: The cytogenetic alterations in renal oncocytoma (RO) are poorly understood. We analyzed 130 consecutive RO for karyotypic alterations. Clonal chromosome abnormalities were identified in 63 (49%) cases, which could be categorized into three classes of mutually exclusive cytogenetic categories. Class 1 (N = 20) RO had diploid karyotypes with characteristic 11q13 rearrangement in balanced translocations with 10 or more different chromosome partners in all cases. We identified recurrent translocation partners at 5q35, 6p21, 9p24, 11p13-14, and 11q23, and confirmed that CCND1 gene rearrangement at 11q13 utilizing fluorescence in situ hybridization (FISH). Class 2 RO (N = 25) exhibited hypodiploid karyotypes with loss of chromosome 1 and/or losses of Y in males and X in females in all cases. The class 3 tumors comprising of 18 cases showed diverse types of abnormalities with the involvement of two or more chromosomes exclusive of abnormalities seen in classes 1 and 2 tumors. Furthermore, karyotypically uninformative cases were subjected to FISH analysis to identify classes 1 and 2 abnormalities. In this group, we found similar frequencies of CCND1 rearrangement, loss of chromosome 1 or Y as with karyotypically abnormal cases. We validated our results against 91 tumors from the Mitelman database. Correlation of clinical data with all the three classes of ROs showed no clear evidence of overall patient survival. Our findings support the hypothesis that RO exhibit three principal cytogenetic categories, which may have different roles in initiation and/or progression. These cytogenetic markers provide a key tool in the diagnostic evaluation of RO.
Japan’s Economy: Stable, with Modest Sustained Change
Creators: name: Patrick, Hugh T.
Publisher: name: Columbia University
Year: 2019
Subjects: Economics
Economic development
International economic relations

description: Overall, the Japanese economy continues to do well, despite a blip in the first quarter of 2018. There have been no big domestic surprises, and none are likely. In 2017, GDP increased 1.7 percent, greater than estimated potential or projected. GNP per capita, in some ways a better measure than GDP growth since Japan’s population is declining, increased by almost 1.9 percent. Unemployment continued to decline to 2.5 percent in July. Deflation has ended, but the major macroeconomic shortfall is that the 2 percent consumer price index (CPI) annual increase target has not been achieved. And it is not likely to be achieved any time soon. At the macro level, improvement is incremental and gradual. Indeed, this reads very much like my essay a year ago.
Anomalous Transport and Nonlinear Reactions in Spiny Dendrites
Creators: name: Fedotov, Sergei
name: Al-Shamsi, Hamed
name: Ivanov, Alexey
name: Zubarev, Andrey
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We present a \textit{mesoscopic}description of the anomalous transport and reactions of particles in spiny dendrites. As a starting point we use two-state Markovian model with the transition probabilities depending on residence time variable. The main assumption is that the longer a particle survives inside spine, the smaller becomes the transition probability from spine to dendrite. We extend a linear model presented in [PRL, \textbf{101}, 218102 (2008)] and derive the nonlinear Master equations for the average densities of particles inside spines and parent dendrite by eliminating residence time variable. We show that the flux of particles between spines and parent dendrite is not local in time and space. In particular the average flux of particles from a population of spines through spines necks into parent dendrite depends on chemical reactions in spines. This memory effect means that one can not separate the exchange flux of particles and the chemical reactions inside spines. This phenomenon does not exist in the Markovian case. The flux of particles from dendrite to spines is found to depend on the transport process inside dendrite. We show that if the particles inside a dendrite have constant velocity, the mean particle's position $ $ increases as $t^μ$ with $μ<1$ (anomalous convection). We derive a fractional convection-diffusion equation for the total density of particles.
description: 12 pages
Uma teologia da recepção?: os censores (em desacordo) contra a superstição, Portugal 1770-1771
Creators: name: Tavares, Rui
Publisher: name: Lusitania Sacra
Year: 2003

description: O trabalho do censor sempre lidou com o poder das palavras, sob múltiplas fisionomias. Mas só raramente teve de se deter diante dos poderes “físicos” (ou “mágicos”, como talvez lhes chamaríamos hoje) das palavras. Poderão as palavras escritas ou faladas deter efeitos sobre fenómenos físicos tais como terremotos, fogos e tempestades? Alguns livrinhos impressos, que era hábito usar como amuletos, defendiam que era de facto possível. Luís de Monte Carmelo, deputado da Real Mesa Censória, defendia que tudo isto era impossível. Havia contudo outros censores que discordavam de Monte Carmelo, buscando uma terceira via que pudesse reconciliar estas diferenças. Argumentavam que as palavras possuem efectivamente poderes físicos, se bem que de uma natureza indirecta. É esta polémica entre censores que o artigo analisa, recuperando algumas das questões implícitas que ela nos coloca sobre a natureza da censura: quais são os limites do trabalho do censor? Podem julgar-se os livros apenas a partir dos seus conteúdos, independentemente dos usos que se lhes dá? Será que um livro continua a ser um livro, mesmo quando não é lido? E, finalmente: como se pode deter poder sobre os poderes das palavras?
description: Lusitania Sacra, n. 15 (2003): Poder, Sociedade e Religião na Época Moderna
Em torno das missões jesuíticas na Amazônia (século XVII)
Creators: name: Chambouleyron, Rafael
Publisher: name: Lusitania Sacra
Year: 2003

description: Este texto discute a presença jesuítica na Amazônia portuguesa no século XVII. A partir da constatação de que a historiografia sobre o tema tem insistido na importância do conflito em torno da mão-de-obra indígena, como matriz explicativa fundamental para entender a presença da Companhia de Jesus na região, trata-se de compreender as implicações dessa perspectiva historiográfica. Ao mesmo tempo, aponta-se para outras questões que foram deixadas de lado, e que constituem também problemas importantes para o entendimento da atuação dos padres na Amazônia.
description: Lusitania Sacra, n. 15 (2003): Poder, Sociedade e Religião na Época Moderna
Resource allocation in wireless systems with relay-based cooperation and energy harvesting
Creators: name: Arab Loodaricheh, Roya
Publisher: name: University of British Columbia
Year: 2015

description: Wireless communication networks are subject to exponential growth as a result of proliferation of smart phones, diverse wireless services and Internet of Things (IoT) applications. This extensive growth of wireless networks can significantly increase energy consumption, and escalating environmental pollution and energy costs have already created an urge for green communication. Therefore, we need to be proactive in designing environment friendly communication technologies and efficient resource allocation solutions, which will potentially drive the future generation of wireless communication. In this thesis, we focus on two promising communication technologies, namely cooperative relaying, which improves energy and spectral efficiency by providing spatial diversity, and energy harvesting technology, which can improve sustainability by utilizing renewable energy sources. The objective of this thesis is to address a number of key challenges in the design of efficient resource allocation techniques for wireless systems based on these two communication technologies. Firstly, we address the problem of energy efficiency maximization for downlink orthogonal frequency division multiple access (OFDMA)-based cooperative networks. The power and subcarrier allocation policies are jointly optimized with quality of service (QoS) provisioning. Afterwards, we investigate frequency reuse in OFDMA device-to-device (D2D) cooperative systems in which D2D pairs are classified based on the level of proximity with each other. We propose different scenarios of downlink communications and provide efficient frequency allocation techniques. Moreover, resource allocation algorithms with low complexity and signaling overhead are developed. Next, we focus on energy limitation of the relay nodes in cooperative systems. Using wireless energy harvesting to power the relay nodes, we propose an efficient resource allocation algorithm. As wireless energy harvesting technology is only effective for charging small nodes in communication systems, finally, we focus on the issue of charging the wireless nodes with renewable energy. We investigate the problem of resource allocation in energy harvesting systems considering the fact that the energy harvested from environment may not be enough to satisfy the QoS of all users due to its random nature. Two different utility functions are introduced and both offline and online schemes are devised to address this problem.
title: Synthesis, characterization, and photocatalytic evaluation of foreign metal ions incorporated iron oxide/oxyhydroxide
Creators: name: Skoric, Danica
Publisher: name: University of Galway
Year: 2025
Subjects: subject: Foreign Metal Ions
subject: Oxyhydroxide
subject: Iron Oxide
subject: Science and Engineering
subject: Biological and Chemical Sciences
subject: Chemistry

description: Among the plethora of organic pollutants, pharmaceuticals (antibiotics) and textile dyes are the two biggest categories of underground and surface water pollutants today due to the large overproduction and incorrect disposal. Apart from having poor degradability, dyes are mostly carcinogenic for humans and animals, while consumption of antibiotic-polluted water, even in small concentrations, can cause antibiotic resistance over time. Photodegradation uses inexhaustible and safe energy of the sun to remove these contaminants by creating smaller and non-toxic products. Iron oxide and iron oxyhydroxide materials have received a lot of attention due to their high abundance, low cost, low toxicity, and magnetic properties. Hydrothermal synthesis is one of the most common methods for the preparation of these materials as it is the most powerful one when it comes to changing synthesis conditions to modify samples’ morphologies. The addition of dopants and the use of heterostructures can affect the properties and applications of the materials. Here, iron oxide and iron oxyhydroxide materials are synthesized using hydrothermal method and temperature, synthesis time, and doping concentrations are being varied to determine the effects on size, morphologies, and applicability of these materials. The dopants used are Cu2+, Ni2+, Sn2+, and Sn4+. The samples are characterized by a variety of techniques and Cu-doped samples are further explored for the photodegradation of methylene blue and tetracycline with the use of laboratory-built photoreactor. It was found that Cu α-FeOOH/α-Fe2O3 heterostructures form at 140 °C synthesis temperature, and they exhibit superior photocatalytic activity, degrading 90% of methylene blue in 5 h and 65% of tetracycline in 6 h.
From Quantum Deformations of Relativistic Symmetries to Modified Kinematics and Dynamics
Creators: name: Lukierski, Jerzy
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a short review describing the use of noncommutative space-time in quantum-deformed dynamical theories: classical and quantum mechanics as well as classical and quantum field theory. We expose the role of Hopf algebras and their realizations (noncommutative modules) as important mathematical tool describing quantum-deformed symmetries: quantum Lie groups and quantum Lie algebras. We consider in some detail the most studied examples of noncommutative space-time geometry: the canonical and $κ$-deformed cases. Finally we briefly describe the modifications of Einstein gravity obtained by introduction of noncommutative space-time coordinates.
description: 29 pages, 1 fig.eps. Invited talk at 50-th Cracow School of Theoretical Physics "Particle Physics at the Dawn of the LHC'', Zakopane, Poland (June 9-19, 2010). To be published in Acta Physica Polonica~B. This paper is an extended version of the text presented at First Galileo-Xu Quang-qi Meeting (Shanghai, October 2009) and published as arXiv:1003.4185 [hep-th]