cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
"Modernizing" Islam : the imam discourse in Bangladesh
Creators: name: Zakiuddin, Almas
Publisher: name: University of British Columbia
Year: 2012

description: International development policies and practices are curiously silent on the subject of religion. It is an overt silence, in the sense that religion appears to be deliberately omitted from consideration. There is an implicit assumption that societies in the South will adopt the secular project of political modernity already perfected in and by the North. The paradox, however, as my dissertation demonstrates, is that development and religion are deeply imbricated at various local, national and transnational sites of power-knowledge. I adopt Foucauldian “discourse theory” and a post-colonial, post-modern, feminist theoretical framework to focus on Bangladesh, a “moderate” Muslim nation-state, as a case study of this paradox. My investigations reveal that international development organizations, in conjunction with a patriarchal Bangladeshi state, are targeting and trans(forming) tens of thousands of male Muslim imams as socio-political and religious authority figures or “Leaders of Influence” to constitute what I call the “Imam Discourse in Bangladesh”. I propose that in this newly constituted discourse, male Muslim imams are being instilled with new forms of authority and influence not only in relation to Islam, but also in relation to gender and women’s subject positions in society. In embracing the development project, trained imams are constituted simultaneously not only as non-modern men who are a potential challenge to the development mission, but as subjects being given opportunities to strengthen their gender and religious authority in the service of development, somewhat like “soldiers of secularism”. My conclusions emerge from an interdisciplinary, qualitative study that included fieldwork in Bangladesh in summer 2006. I show how the Imam Discourse emerges in a particular ethno-religious context and a post 9/11 “moment” when American hegemonic interests are dominating geo-political understandings of, and entanglements with Muslim subjects. I also explore emerging, new counter-discourses that pertain to development and Muslim society and reflect gender-aware, and Muslim feminist reinterpretations of political modernity, secularism and international development.
Bremsstrahlung simulation in K to pi l^pm nu_l (gamma) decays
Creators: name: Xu, Qingjun
name: Was, Z.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In physics simulation chains, the PHOTOS Monte Carlo program is often used to simulate QED effects in decays of intermediate particles and resonances. The program is based on an exact multiphoton phase space. In general, the matrix element is obtained from iterations of a universal kernel and approximations are involved. To evaluate the program precision, it is necessary to formulate and implement within the generator the exact matrix element, which depends on the decay channel. Then, all terms necessary for non-leading logarithms are taken into account. In the present letter we focus on the decay K to pi l^pm nu_l and tests of the PHOTOS Monte Carlo program. We conclude a 0.2% relative precision in the implementation of the hard photon matrix element into the emission kernel, including the case where approximations are used.
description: 1+20 pages, 8 figures
Generalised coupled-dipole model for core-satellite nanostructures
Creators: name: Glukhova, Stefania
name: Ru, Eric C. Le
name: Auguié, Baptiste
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Plasmonic core-satellite nanostructures have recently attracted interest in photocatalytic applications. The core plasmonic nanoparticle acts like an antenna, funnelling incident light into the near-field region, where it excites the smaller satellite nanoparticles with resonantly enhanced absorption. Computer simulations of the optical absorption by such structures can prove challenging, even with state-of-the-art numerical methods, due to the large difference in size between core and satellite particles. We present a generalised coupled-dipole model that enables efficient computations of light absorption in such nanostructures, including those with many satellites. The method accurately predicts the local absorption in each satellite despite being two orders of magnitude weaker than the absorption in the core particle. We assess the range of applicability of this model by comparing the results against the superposition $T$-matrix method, a rigorous solution of Maxwell's equations that is much more resource-intensive and becomes impractical as the number of satellite particles increases.
description: 9 pages
Reconstructing 4-manifolds from Morse 2-functions
Creators: name: Gay, David T.
name: Kirby, Robion
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M50, 57R45, 57R65

description: Given a Morse 2-function $f: X^4 \to S^2$, we give minimal conditions on the fold curves and fibers so that $X^4$ and $f$ can be reconstructed from a certain combinatorial diagram attached to $S^2$. Additional remarks are made in other dimensions.
description: 13 pages, 10 figures. Replaced because the main theorem in the original is false. The theorem has been corrected and counterexamples to the original statement are given
Throughput Maximization for Intelligent Refracting Surface Assisted mmWave High-Speed Train Communications
Creators: name: Li, Jing
name: Niu, Yong
name: Wu, Hao
name: Ai, Bo
name: He, Ruisi
name: Wang, Ning
name: Chen, Sheng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: With the increasing demands from passengers for data-intensive services, millimeter-wave (mmWave) communication is considered as an effective technique to release the transmission pressure on high speed train (HST) networks. However, mmWave signals ncounter severe losses when passing through the carriage, which decreases the quality of services on board. In this paper, we investigate an intelligent refracting surface (IRS)-assisted HST communication system. Herein, an IRS is deployed on the train window to dynamically reconfigure the propagation environment, and a hybrid time division multiple access-nonorthogonal multiple access scheme is leveraged for interference mitigation. We aim to maximize the overall throughput while taking into account the constraints imposed by base station beamforming, IRS discrete phase shifts and transmit power. To obtain a practical solution, we employ an alternating optimization method and propose a two-stage algorithm. In the first stage, the successive convex approximation method and branch and bound algorithm are leveraged for IRS phase shift design. In the second stage, the Lagrangian multiplier method is utilized for power allocation. Simulation results demonstrate the benefits of IRS adoption and power allocation for throughput improvement in mmWave HST networks.
description: 13 pages, 7 figures, IEEE Internet of Things Journal
Combined Microwave, Ultrasound and Strain Imaging for Breast Tissue Characterization
Creators: name: Talaga, Kasha
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: Medical imaging
subject: Breast cancer
subject: Ultrasound
subject: Microwave
subject: Elastography
subject: Engineering
subject: Engineering--Biomedical

description: Today, breast cancer continues to be one of the most common cancers among women. Early detection of breast cancer can provide patients with the best chance of survival. Imaging methods are routinely used to scan for breast abnormalities, which may include X-Ray mammography, MRI, and ultrasound. The standard method is X-Ray mammography, however, using ultrasound in addition to mammography has become common practice. Another form of imaging, elastography, utilizes the same ultrasound equipment, and is useful to differentiate elastic stiffness between tumours and normal tissues. Microwave imaging is an emerging modality that is appealing because it is low-cost and highly safe for patients, as it does not emit harmful radiation. A promising improvement in the field of breast cancer imaging is to utilize the imaging capabilities of these 3 modalities, microwave, ultrasound and strain elastography in order to better locate and identify breast tumours. In this study, we propose the integration of ultrasound and elastography with an existing microwave-based breast imaging system developed at the University of Calgary. This thesis is focused on presenting a platform which includes a prototype for integration and a graphical interface for viewing the images from all modalities. In this work, ultrasound, strain and microwave imaging scans are applied to breast-tissue mimicking phantoms with different inclusion orientations. The images are investigated to compare image results in various scenarios. Secondly, to integrate the ultrasound and microwave devices, a prototype was developed to allow the ultrasound probe and microwave antennas to have contact with the phantom. The prototype is validated by acquiring both ultrasound and microwave images. Lastly, a graphical interface where images from each modality are viewed is introduced. Here, strain and microwave images are overlayed to provide further information on the inclusion.
Trapped Bose-Einstein condensates with Planck-scale induced deformation of the energy-momentum dispersion relation
Creators: name: Briscese, F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We show that harmonically trapped Bose-Einstein condensates can be used to constrain Planck scale physics. In particular we prove that a Planck-scale induced deformation of the Minkowski energy-momentum dispersion relation $δE \simeq ξ_1 mcp/2M_p$ produces a shift in the condensation temperature $T_c$ of about $ΔT_{c}/T_{c}^{0} \simeq 10^{-6} ξ_1 $ for typical laboratory conditions. Such a shift allows to bound the deformation parameter up to $|ξ_1| \lesssim 10^4$. Moreover we show that it is possible to enlarge $ΔT_{c}/T_{c}^{0}$ and improve the bound on $ξ_1$ lowering the frequency of the harmonic trap. Finally we compare the Planck-scale induced shift in $T_c$ with similar effects due to interboson interactions and finite size effects.
description: 5 pages, no figures, version published in PLB
Theory of water and charged liquid bridges
Creators: name: Morawetz, Klaus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Physics (physics.class-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Mathematical Physics (math-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The phenomena of liquid bridge formation due to an applied electric field is investigated. A new solution for the charged catenary is presented which allows to determine the static and dynamical stability conditions where charged liquid bridges are possible. The creeping height, the bridge radius and length as well as the shape of the bridge is calculated showing an asymmetric profile in agreement with observations. The flow profile is calculated from the Navier Stokes equation leading to a mean velocity which combines charge transport with neutral mass flow and which describes recent experiments on water bridges.
description: 10 pages 12 figures, misprints corrected, assumptions more transparent
Investigation into the Impacts of a Global Pandemic on the Ability to Properly Operate and Maintain Water and Wastewater Treatment and Management in Indigenous Communities in Canada, With a Focus on First Nations
Creators: name: Adebayo, Feyisetan
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: COVID-19 pandemic
subject: impacts assessments
subject: emergency planning
subject: water and wastewater utilities
subject: First Nations
subject: Indigenous communities
subject: Qualitative Analysis
subject: Thematic Content Analysis
subject: Grounded Theory
subject: Engineering
subject: Engineering--Civil
subject: Engineering--Environmental

description: The COVID-19 pandemic spurted research studies on impacts monitoring and emergency planning in the water sector, especially in utility operations. However, studies on Indigenous communities were not significantly explored despite the history of vulnerability to previous pandemics. Considering that the financial and infrastructural gaps had rendered the First Nations' water systems vulnerable to contamination and other crises, the COVID-19 pandemic highlighted the possibility of increased vulnerability for water and wastewater utilities. Since emergency planning strategies and frameworks for First Nations were primarily outdated, the COVID-19 pandemic underscored the need for new studies and updated information. Therefore, the purpose of this research was two-fold. First, it investigated the impacts of the COVID-19 pandemic on water and wastewater utilities in Canada’s First Nations. Second, it explored pandemic planning and impact minimization mechanisms for future emergency planning. In this research, qualitative data collected through an online survey and open-ended semi-structured interviews from forty-two water professionals were analyzed to evaluate the impacts of the COVID-19 pandemic on the operations and management of water and wastewater systems and utilities in Canada First Nations. Through Thematic Content Analysis and Grounded Theory, across-transcript research themes (i.e., common findings between participants) were developed to understand the variations of impacts across the sampled First Nations water professionals and how they compared with their non-Indigenous counterparts. Also, strategies for impact minimization in emergency planning were developed into a First Nation pandemic planning framework to improve the preparedness of water and wastewater systems and utilities for similar emergencies in the future. The end-users completed testing and validation: operators, supervisors, and managers. Findings from this study have been reviewed and verified through oral and written communication with the participants and industry partners. The executive summary and one-pager infographic from this study were distributed to the participants, stakeholders and decision-makers for implementation and policy development opportunities.
Closed forms and multi-moment maps
Creators: name: Madsen, Thomas Bruun
name: Swann, Andrew
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C15 (primary), 22E25, 53C29, 53C30, 53C55, 53D20, 70G45 (secondary)

description: We extend the notion of multi-moment map to geometries defined by closed forms of arbitrary degree. We give fundamental existence and uniqueness results and discuss a number of essential examples, including geometries related to special holonomy. For forms of degree four, multi-moment maps are guaranteed to exist and are unique when the symmetry group is (3,4)-trivial, meaning that the group is connected and the third and fourth Lie algebra Betti numbers vanish. We give a structural description of some classes of (3,4)-trivial algebras and provide a number of examples.
description: 36 pages
Guía: Datos Abiertos sobre Cambio Climático
Creators: name: Durán, Guillermo
Publisher: name: Zenodo
Year: 2019
Subjects: Open Data
Climate Change
Open Data Standards

description: Este documento es una introducción general a qué son los datos abiertos y está enfocado a los datos relacionados al cambio climático. Se espera que este documento sirva como guía para la Dirección de Cambio Climático (DCC) en la implementación de los datos abiertos dentro de sus plataformas web y además sea un incentivo para que esta práctica se difunda entre otras entidades del gobierno. Este documento es producto del fellowship que brindaron la Iniciativa Latinoamericana por los Datos Abiertos (ILDA) y Escuela De Datos para Costa Rica. Fue desarrollado en la DCC durante la segunda mitad del año 2018.
Merton Investment Problem for the Hawkes-based Risk Model
Creators: name: Nova, Mushfika Hossain
Publisher: name: Science
Year: 2022
Subjects: subject: Merton Investment Problem in Insurance
subject: Education--Mathematics

description: We study the Merton investment problem in insurance where the risk process is based on the general compound Hawkes process. That means the arrival of claims modeled with a Hawkes process and the modeled claim sizes follow a finite number of fixed jump sizes governed by a Markov chain evolution. The Merton investment problem in insurance is an optimal control problem and we use the dynamic programming method to derive the stochastic Hamilton-Jacobi-Bellman (SHJB) equation satisfied by the value function. The stochastic HJB equation yields a means to obtain the optimal control and thus the optimally controlled stochastic differential equation. Finally, using the claim size from the empirical data set, we simulate the optimal investment portfolio and risk process.
Information Retrieval Systems Adapted to the Biomedical Domain
Creators: name: Marrero, Mónica
name: Sánchez-Cuadrado, Sonia
name: Urbano, Julián
name: Morato, Jorge
name: Moreiro, José-Antonio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The terminology used in Biomedicine shows lexical peculiarities that have required the elaboration of terminological resources and information retrieval systems with specific functionalities. The main characteristics are the high rates of synonymy and homonymy, due to phenomena such as the proliferation of polysemic acronyms and their interaction with common language. Information retrieval systems in the biomedical domain use techniques oriented to the treatment of these lexical peculiarities. In this paper we review some of the techniques used in this domain, such as the application of Natural Language Processing (BioNLP), the incorporation of lexical-semantic resources, and the application of Named Entity Recognition (BioNER). Finally, we present the evaluation methods adopted to assess the suitability of these techniques for retrieving biomedical resources.
description: 6 pages, 4 tables
Leptogenesis in flavor models with type I and II seesaws
Creators: name: Sierra, D. Aristizabal
name: Bazzocchi, F.
name: Varzielas, I. de Medeiros
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In type I seesaw models with flavor symmetries accounting for the lepton mixing angles the CP asymmetry in right-handed neutrino decays vanishes in the limit in which the mixing pattern is exact. We study the implications that additional degrees of freedom from type II seesaw may have for leptogenesis in such a limit. We classify in a model independent way the possible realizations of type I and II seesaw schemes, differentiating between classes in which leptogenesis is viable or not. We point out that even with the interplay of type I and II seesaws there are generic classes of minimal models in which the CP asymmetry vanishes. Finally we analyze the generation of the lepton asymmetry by solving the corresponding kinetic equations in the general case of a mild hierarchy between the light right-handed neutrino and the scalar triplet masses. We identify the possible scenarios in which leptogenesis can take place.
description: 24 pages, 5 figures; minor corrections; final version for publication in Nucl.Phys.B
Spinflation with Angular Potentials
Creators: name: Gregory, Ruth
name: Kaviani, Dariush
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate in detail the cosmological consequences of realistic angular dependent potentials in the brane inflation scenario. Embedding a warped throat into a compact Calabi-Yau space with all moduli stabilized breaks the no-scale structure and induces angular dependence in the potential of the probe D3-brane. We solve the equations of motion from the DBI action in the warped deformed conifold including linearized perturbations around the imaginary self-dual solution. Our numerical solutions show that angular dependence is a next to leading order correction to the dominant radial motion of the brane, however, just as angular motion typically increases the amount of inflation (spinflation), having additional angular dependence also increases the amount of inflation. We also derive an analytic approximation for the number of e-foldings along the DBI trajectory in terms of the compactification parameters.
description: 20 pages, 10 figures. Revised to published version: minor errors corrected, references and discussion added
Adversarial Robustness Testing of Deep Reinforcement Learning Based Automated Trading Software
Creators: name: Ataiefard, Foozhan
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: Deep Reinforcement Learning
subject: Automated Trading
subject: Robustness Testing
subject: Education--Finance
subject: Computer Science

description: Applications of neural networks in automating control tasks are one the most popular topics in software-intensive companies these days. With the integration of deep reinforcement learning (DRL) methods, classic algorithms were outperformed in various software-related tasks such as playing complex games, self-driving cars, etc. One of the interesting applications of reinforcement learning is its application as an automated stock trading software system. However, these algorithms are prone to manipulations by competing trading systems, similar to player vs. player settings. But, verifying the quality of DRL-based commercial trading software is challenging for a third party since they are protected behind secure international exchange APIs such as NASDAQ. This makes typical gradient-based adversarial sample generation (as a quality assessment tool for Deep Neural Networks), like FGSM, obsolete. In this research, we aim to demonstrate a “grey-box” approach for attacking a deep reinforcement learning trading agent is possible by trading in the same stock market. We assume we don’t have access to the trading agents’ source code, policy architecture, Deep Neural Network weights, or training algorithm. Our only viable data would be the current state of the market and the decision of the trading agent or its chosen action in that given state. The adversary agent is provided with the combination of inputs to the trading agent’s Deep Neural Network policy and the trade decision made by the agent. Our proposed adversary the agent uses a hybrid Deep Neural Network as its policy consisting of convolutional layers and fully-connected layers. The adversary policy proposed in our research was able to change the softmax output of the baseline by 44.66%, ensemble method by 28.7%, and the automated trading software developed by our industrial partner Intelius AI by 21.2% and reducing their profits by 87.94%, 74.46%, and 66.82%, respectively.
Investigating Inverter Efficiency at Low Power for LED Lighting
Creators: name: Ahmed, Syed Kaiser
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: Engineering
subject: Engineering--Electronics and Electrical

description: With the industrialization of society, concerns about the environment have led to the development of renewable energy approaches. Efforts are underway to provide renewable energy in remote villages, including the use of photovoltaic energy. An issue with a battery based photovoltaic energy system for a village residence is the efficiency of the DC to AC power inverter. A sub issue, not well addressed in the literature, is inverter efficiency at low power, such as the operation of a single LED light at night. It is proposed in the literature that efficiency can be increased with the use of a very low switching frequency of the inverter power transistors. A 200W MOSFET Full Bridge inverter is modelled and characterised for operation down to 3.5 W with a switching frequency of 200Hz. Using a SimuLink simulation, it is found that inverter efficiency can be increased from 59% to 77% employing this approach.
Characterization of a Hermitian curve by Galois point
Creators: name: Fukasawa, Satoru
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H50, 12F10

description: For a plane curve, a point in the projective plane is said to be Galois when the point projection induces a Galois extension of function fields. We give a new characterization of a Fermat curve whose degree minus one is a power of $p$ in characteristic $p>2$, which is sometimes called Hermitian, by the number of Galois points lying on the curve.
description: 11 pages, Added one Lemma and modified some proofs
Patterns of DNA methylation on the human X chromosome and use in analyzing X-chromosome inactivation
Creators: name: Cotton, Allison Marie
Publisher: name: University of British Columbia
Year: 2012

description: The process of X-chromosome inactivation achieves dosage compensation between mammalian males and females. In females one X chromosome is transcriptionally silenced through a variety of epigenetic modifications including DNA methylation. Most X-linked genes are subject to X-chromosome inactivation and only expressed from the active X chromosome. On the inactive X chromosome, the CpG island promoters of genes subject to X-chromosome inactivation are methylated in their promoter regions, while genes which escape from Xchromosome inactivation have unmethylated CpG island promoters on both the active and inactive X chromosomes. The first objective of this thesis was to determine if the DNA methylation of CpG island promoters could be used to accurately predict X chromosome inactivation status. The second objective was to use DNA methylation to predict X-chromosome inactivation status in a variety of tissues. A comparison of blood, muscle, kidney and neural tissues revealed tissue-specific X-chromosome inactivation, in which 12% of genes escaped from X-chromosome inactivation in some, but not all, tissues. X-linked DNA methylation analysis of placental tissues predicted four times higher escape from X-chromosome inactivation than in any other tissue. Despite the hypomethylation of repetitive elements on both the X chromosome and the autosomes, no changes were detected in the frequency or intensity of placental Cot-1 holes. The third objective of this thesis was to use DNA methylation to investigate X-chromosome inactivation in female samples with chromosomally abnormal karyotypes. The spread of Xchromosome inactivation into the autosomal portion of six unbalanced X;autosome translocations revealed similarities between X;autosome translocations involving the same autosome and therefore suggested a role for DNA sequence in influencing X-chromosome inactivation status of genes. Autosomal genes that escaped from inactivation were found to have significantly lower L1 and LTR but higher Alu content than genes which were subject to inactivation. Lastly, DNA methylation was used to predict the number of inactive X chromosomes in triploid placental samples. Triploid samples provide an excellent system in which to study the counting step of X-chromosome inactivation and DNA methylation analysis provides a means to determine the number of inactive X chromosomes using only a DNA sample.
Spin operator and spin states in Galilean covariant Fermi field theories
Creators: name: Saradzhev, Fuad M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Spin degrees of freedom of the Galilean covariant Dirac field in (4+1) dimensions and its nonrelativistic counterpart in (3+1) dimensions are examined. Two standard choices of spin operator, the Galilean covariant and Dirac spin operators, are considered. It is shown that the Dirac spin of the Galilean covariant Dirac field in (4+1) dimensions is not conserved, and the role of non-Galilean boosts in its nonconservation is stressed out. After reduction to (3+1) dimensions the Dirac field turns into a nonrelativistic Fermi field with a conserved Dirac spin. A generalized form of the Levy-Leblond equations for the Fermi field is given. One-particle spin states are constructed. A particle-antiparticle system is discussed.
description: Minor corrections in the text; journal version
New Eruptive YSOs from SPICY and WISE
Creators: name: Peña, C. Contreras
name: Ashraf, M.
name: Lee, J. E.
name: Herczeg, G.
name: Lucas, P. W.
name: Guo, Z.
name: Johnstone, D.
name: Lee, H. G.
name: Jose, J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This work presents four high-amplitude variable YSOs ($\simeq$ 3 mag at near- or mid-IR wavelengths) arising from the SPICY catalog. Three outbursts show a duration that is longer than 1 year, and are still ongoing. And additional YSO brightened over the last two epochs of NEOWISE observations and the duration of the outburst is thus unclear. Analysis of the spectra of the four sources confirms them as new members of the eruptive variable class. We find two YSOs that can be firmly classified as bona fide FUors and one object that falls in the V1647 Ori-like class. Given the uncertainty in the duration of its outburst, an additional YSO can only be classified as a candidate FUor. Continued monitoring and follow-up of these particular sources is important to better understand the accretion process of YSOs.
description: 10 pages, 10 figures, Accepted for publication at the Journal of the Korean Astronomical Society
Maintaining the Couple within the Family: Exploring Relationship Actions and Projects during the Transition to Parenthood
Creators: name: Campbell, Anastasia K.
Publisher: name: Werklund School of Education
Year: 2022
Subjects: subject: couple relationship
subject: transition to parenthood
subject: action project method
subject: contextual action theory
subject: Covid-19 pandemic
subject: qualitative research
subject: Educational Psychology

description: Contextual Action Theory (CAT) was used to guide an exploratory qualitative study of first-time parents’ relational experiences of transitioning to parenthood. The Action-Project Method (A-PM) was used to address the specific research questions “what kinds of projects for future life together do adult couples jointly construct as they transition from partners to parents?” and “what are the joint actions of these couples as they construct and pursue these projects?” Situated in the field of counselling psychology, this body of work integrates research and practical implications. Manuscript 1 contributes to the methodological literature by describing for the first time how the A-PM can be adapted to conduct research online. Findings from Manuscript 2 reveal specific relationship projects and actions from five couples in the process of becoming parents for the first time. Manuscript 3 highlights both the positive and negative impacts of COVID-19 on the ways in which couples nurture their mutual relationship as they have their first child together. Taken together, findings from this dissertation contribute to the couple and family relations literature by shedding light on both partners’ observed interactions and qualitative accounts of their relational experiences three-to-six months following the birth of their first child. This work offers methodological and conceptual advancements in the field of counselling psychology, which will continue to encourage advancements in both research and clinical practice.
Search for the $Z_1(4050)^+$ and $Z_2(4250)^+$ states in $\bar B^0 \to χ_{c1} K^- π^+$ and $B^+ \to χ_{c1} K^0_S π^+$
Creators: name: The BABAR Collaboration
name: Lees, J. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We search for the $Z_1(4050)^+$ and $Z_2(4250)^+$ states, reported by the Belle Collaboration, decaying to $χ_{c1} π^+$ in the decays $\bar B^0 \to χ_{c1} K^- π^+$ and $B^+ \to χ_{c1} K^0_S π^+$ where $χ_{c1} \to \jpsi γ$. The data were collected with the BaBar detector at the SLAC PEP-II asymmetric-energy $e^+e^-$ collider operating at center-of-mass energy 10.58 GeV, and correspond to an integrated luminosity of 429 fb$^{-1}$. In this analysis, we model the background-subtracted, efficiency-corrected $χ_{c1}π$ mass distribution using the $K π$ mass distribution and the corresponding normalized $K π$ Legendre polynomial moments, and then test the need for the inclusion of resonant structures in the description of the $χ_{c1}π$ mass distribution. No evidence is found for the $Z_1(4050)^+$ and $Z_2(4250)^+$ resonances, and 90% confidence level upper limits on the branching fractions are reported for the corresponding $B$-meson decay modes.
description: 15 pages, 12 postscript figures, to be published in Phys. Rev. D
Evolution of order and chaos across a first-order quantum phase transition
Creators: name: Leviatan, A.
name: Macek, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the evolution of the dynamics across a generic first order quantum phase transition in an interacting boson model of nuclei. The dynamics inside the phase coexistence region exhibits a very simple pattern. A classical analysis reveals a robustly regular dynamics confined to the deformed region and well separated from a chaotic dynamics ascribed to the spherical region. A quantum analysis discloses regular bands of states in the deformed region, which persist to energies well above the phase-separating barrier, in the face of a complicated environment. The impact of kinetic collective rotational terms on this intricate interplay of order and chaos is investigated.
description: 5 pages, 4 figures, Physics Letters B, in press. Higher quality (larger size) figures can be obtained from http://www-ucjf.troja.mff.cuni.cz/~geometric/PLB-Figs2-3.zip
Self-Compassion and Body Dissatisfaction in Young Men
Creators: name: Kim, Benjamin
Publisher: name: Werklund School of Education
Year: 2022
Subjects: subject: self-compassion
subject: body dissatisfaction
subject: appearance evaluation
subject: drive for muscularity
subject: young men
subject: Educational Psychology

description: Studies have shown that self-compassion, a positive psychological construct characterized by self-kindness, common humanity, and mindfulness, is negatively associated with body dissatisfaction in women. However, little is known about the relationship between self-compassion and body dissatisfaction among men. Body dissatisfaction in men heavily overlaps with a desire for muscularity and leanness for men in contemporary Western society. Given that young adult men are more vulnerable to body dissatisfaction, this study aimed to examine the unique associations between self-compassion and three body dissatisfaction variables in young men: overall appearance evaluation, satisfaction with distinct body areas (e.g., chest, back, and biceps), and drive for muscularity. A sample of 170 men between 18 to 34 years of age from the United States were recruited from Amazon Mechanical Turk (MTurk). Participants completed a demographics questionnaire, one measure of self-compassion, and three measures of body dissatisfaction (appearance evaluation, body areas satisfaction, and drive for muscularity). The findings revealed that self-compassion was uniquely associated with all three body dissatisfaction variables after accounting for body mass index. The findings suggested a potential protective role of self-compassion against body dissatisfaction in young men. Implications for counselling psychology and research highlight the importance of self-compassion as a protective factor within the sociocultural context of male body image.
Sustainability action planning of small communities in British Columbia
Creators: name: Luther, Elliz Allisha
Publisher: name: University of British Columbia
Year: 2012

description: Environmental changes associated with climate change have caused planners to incorporate sustainability into community planning processes. As a result, long term community sustainability has become an important objective to help mitigate the changes to the external environment. Issues surrounding land use, water quality, air quality transportation and waste management have been identified by communities as target areas for sustainability planning. This thesis examines the role of sustainability in the planning processes of small communities in British Columbia using Peachland and Armstrong as case studies. Small communities in particular have faced great challenges when developing objectives for long term community sustainability with varying levels of civic engagement and cultural capital. While federal and provincial governments have developed toolkits to help assist communities in planning sustainably, most of these toolkits have been developed for larger communities whose governance structures differ and where scale and intensity for community planning issues are very different when compared to small communities. Therefore, this thesis also investigates the role of governance in the planning processes of small communities. The governance structures of municipal governments have undergone a transitioning order to understand how sustainability is achieved in small communities, systems for decision making, accountability and responsibility must also be examined. Federal and provincial governments have been downloading more responsibility to municipal governments and dispersing more responsibility to the public sector. This thesis further investigates how shifts in governance falls align with neo-liberal strategies that force the community and the individual to take responsibility for decision making and accountability surrounding community planning and the overall welfare of the community.
Il mobbing: conoscere per prevenire: Atti del Ciclo formativo, gennaio-settembre 2015
Creators: name: Comitato Unico Di Garanzia Dell'Università Di Bologna, .
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2016
Subjects: SPS/09 Sociologia dei processi economici e del lavoro

description: Un’istituzione che vive per e sulla ricerca non può non interrogarsi su quali rapporti, quale clima si respirino al suo interno. Deve chiedersi come può essere efficiente senza essere dimentica dei soggetti che la compongono, competitiva e guardata ad esempio, senza essere disumana. Deve avere il coraggio di parlare pubblicamente di conflitti o di incomprensioni interne e discutere di strategie per il miglioramento del benessere, in un ambiente che ci vede muovere ed agire, non di rado in una stessa struttura ed in un intorno prossimale di rapporti, per molti anni di lavoro. Con la responsabilità ed il privilegio di avere come principio costitutivo la capacità di generare, tutti e tutte insieme, didattica e ricerca, sempre di più in una logica interdisciplinare, e quindi con un orizzonte e una prospettiva che ben pochi enti pubblici e nessuna azienda privata possono avere. Tra le righe di questa situazione comune ad ogni Ateneo, si è trovato a lavorare il primo Comitato Unico di Garanzia dell’Università di Bologna, nominato in dicembre del 2013. Noi, come membri, sapevamo di svolgere funzioni non esecutive ma “propositive, consultive e di verifica per lo sviluppo della cultura delle pari opportunità, della valorizzazione del benessere lavorativo e contro
le discriminazioni”. Sapevamo anche di aver la responsabilità di identificare e pubblicare “azioni positive” che non fossero solo esercizi di calligrafia e atti formali da compiere per dimostrare di esistere e per essere visti.
From Cosmos to Intelligent Life: The Four Ages of Astrobiology
Creators: name: Gleiser, Marcelo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The history of life on Earth and in other potential life-bearing planetary platforms is deeply linked to the history of the universe. Since life as we know it relies on chemical elements forged in dying heavy stars, the universe needs to be old enough for stars to form and evolve. Current cosmological theory indicates that the universe is 13.7$\pm 0.13$ billion years old and that the first stars formed hundreds of millions of years after the big bang. At least some stars formed with stable planetary systems wherein a set of biochemical reactions leading to life could have taken place. In this lecture, I argue that we can divide cosmological history into four ages, from the big bang to intelligent life. The Physical Age describes the origin of the universe, of matter, of cosmic nucleosynthesis, as well as the formation of the first stars and galaxies. The Chemical Age begun when heavy stars provided the raw ingredients for life through stellar nucleosynthesis and describes how heavier chemical elements collected in nascent planets and moons to give rise to prebiotic biomolecules. The Biological Age describes the origin of early life, its evolution through Darwinian natural selection, and the emergence of complex multicellular life forms. Finally, the Cognitive Age describes how complex life evolved into intelligent life capable of self-awareness and of developing technology through the directed manipulation of energy and materials. We conclude discussing whether we are the rule or the exception.
description: 7 pages, Opening plenary talk delivered at the S\~ao Paulo Advanced School of Astrobiology, S\~ao Paulo, December 2011. In press, Int. J. Astrobio. Reference updated
Extraordinary magnetic response of an anisotropic 2D antiferromagnet via site-dilution
Creators: name: Yang, Junyi
name: Suwa, Hidemaro
name: Meyers, Derek.
name: Zhang, Han
name: Horak, Lukas
name: Zhang, Zhan
name: Karapetrova, Jenia
name: Kim, Jong-Woo
name: Ryan, Philip J.
name: Dean, Mark. P. M.
name: Hao, Lin
name: Liu, Jian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A prominent character of two-dimensional magnetic systems is the enhanced spin fluctuations, which however reduce the ordering temperature. Here we report that a magnetic field of only one-thousandth of the Heisenberg superexchange interaction can induce a crossover, which for practical purposes is the effective ordering transition, at temperatures about 6 times of the Neel transition in a site-diluted two-dimensional anisotropic quantum antiferromagnet. Such a strong magnetic response is enabled because the system directly enters the antiferromagnetically ordered state from the isotropic disordered state skipping the intermediate anisotropic stage. The underlying mechanism is achieved on a pseudospin-half square lattice realized in the [(SrIrO3)1/(SrTiO3)2] superlattice thin film that is designed to linearly couple the staggered magnetization to external magnetic fields by virtue of the rotational symmetry-preserving Dzyaloshinskii Moriya interaction. Our model analysis shows that the skipping of the anisotropic regime despite the finite anisotropy is due to the enhanced isotropic fluctuations under moderate dilution.
title: Pricing Indefinitely Lived Assets: Experimental Evidence
Creators: name: Duffy, John
name: Jiang, Janet Hua
name: Xie, Huan
Publisher: name: Bank of Canada
Year: 2023

description: We study indefinitely lived assets in experimental markets and find that the traded prices of these assets are, on average, about 40% of the risk-neutral fundamental value. Neither uncertainty about the value of total dividend payments nor horizon uncertainty about the duration of trade can account for this low traded price. An Epstein and Zin (1989) recursive preference specification that models the dynamic realization of dividend payments and incorporates risk preferences can rationalize the low traded price observed in our indefinitely lived asset market.
description: Nous étudions les actifs à durée indéterminée dans des marchés expérimentaux et constatons que les prix négociés de ces actifs s’établissent, en moyenne, à 40 % environ de la valeur fondamentale neutre face au risque. Ce faible prix négocié ne s’explique ni par l’incertitude quant à la valeur totale des versements de dividendes ni par l’incertitude entourant l’horizon de négociation. Une spécification de préférences récursives d’Epstein et Zin (1989), qui permet de modéliser la réalisation dynamique des versements de dividendes tout en intégrant les préférences à l’égard des risques, peut expliquer ce bas prix observé dans notre marché d’actifs à durée indéterminée.
Super-Ehlers in Any Dimension
Creators: name: Ferrara, Sergio
name: Marrani, Alessio
name: Trigiante, Mario
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We classify the enhanced helicity symmetry of the Ehlers group to extended supergravity theories in any dimension. The vanishing character of the pseudo-Riemannian cosets occurring in this analysis is explained in terms of Poincaré duality. The latter resides in the nature of regularly embedded quotient subgroups which are non-compact rank preserving.
description: 1+55 pages; 15 Tables, 6 Figures; v2 : some clarifications added in Sec. 1 and in App. A