cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unpacking digital options thinking for innovation renewal: a clinical inquiry into car connectivity
Creators: name: Svahn, Fredrik
name: Kristensson, Martin
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Neuroscience
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Cancer

description: Options thinking is a powerful approach for managing uncertainty and change in digital environments. It is recognised as a structured process for identifying, developing, and realising options into novel products and services. At Volvo Cars, we have learned it can also become a powerful instrument for innovation renewal, although it can be difficult to apply because it challenges existing firm practices. We elaborate this tension by presenting digital options strategizing as a process of applying options thinking to negotiate capability gaps and configure innovation resources. Our clinical study reveals that this facilitates innovation renewal through emergent processes, practice-oriented design, and opportunity-driven management.
Patient health locus of control: the design of information systems for patient-provider interactions
Creators: name: Wallace, James
name: Mullarkey, Matthew T
name: Hevner, Alan
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Patient locus of control (LOC) is a strong determinant of health outcomes, yet healthcare systems rarely use patient LOC to devise treatment plans. Our clinical research applies action design research methods to design and evaluate healthcare information systems to improve paths and outcomes of patient care. Socio-technical synergies between the interior (technical) and exterior (socio) designs support effective human-computer interfaces and interactions. Rigorous focus group evaluations of the systems for capturing LOC information and using that information in treatment plans are performed and system refinements are implemented. The practitioner organisation has future plans for full implementation of the designed systems.
Promising the Future: Environmental Temporalities in Contemporary Picturebooks
Creators: St. Pierre, Charis
Publisher: name: University of Alberta Library
Year: 2023

This thesis considers how time is described and experienced in a small selection of popular picturebooks. Ecocriticism argues the importance of considering temporal modes of life which operate outside human scales of movement, progress, and capital. As such, this thesis begins by considering whether picturebook narratives grounded in linear or cyclical ideas of time allow for a more useful response to ecological concerns. It then takes up a phenomenological methodology to ask how the material picturebook format mediates the experience of time passing by correlating the time of the character(s) to the time of the reader. Finally, it considers three explicitly environmental picturebooks, showing how the futures they advocate are grounded in temporally impossible hopes of returning the world to a past state. Taken together, these explorations of picturebook temporality suggest that time is represented most accurately— and environmentally usefully—when focus is placed on sustainable present processes rather than specific hopes of future stability. As such, the project concludes by advocating that environmental picturebooks focus less on idealized destinations or specific future goals, and more on the sorts of sustainable processes here and now which will serve children regardless of their climate future. It moreover suggests that the most realistic and useful depictions of picturebook temporality happen during reader interaction, when time is not represented as a stable line, cycle, or spatial schema, but rather kept in flow, inviting the reader to collaborate with the narrative in real time.
Investigation of Halogen Bond Interactions of Chiral Molecules Using Infrared, Vibrational Circular Dichroism, NMR, UV-vis Spectroscopy and Density Functional Theory Calculations
Creators: Moazeni, Amin
Publisher: name: University of Alberta Library
Year: 2023

This PhD thesis shows the application of different spectroscopic and theoretical tools

to probe the extent and possible interaction between various Lewis acids (halogen

bond donor) and Lewis bases (halogen bond acceptors). Vibrational circular

dichroism (VCD) that is the chiral version of infrared (IR) spectroscopy is able to

provide valuable information about the absolute configuration of a chiral molecule in

the solution when coupled with theoretical calculations. This technique is also

sensitive to intermolecular interactions. Since the strength and level of interaction

between the halogen bond donors and halogen bond acceptors is unknown to us we

have also decided to utilize other spectroscopy techniques such as 19F-NMR, 1HNMR, and UV-vis spectroscopy.

In chapter 3, I studied the formation of the halogen bond between 4-benzyl-

1,3-thiazolidine-2-one (NOS) and iodine. In order to probe the interaction between

the two molecules I used FT-IR, VCD, 1H-NMR, and UV-vis spectroscopy

techniques. Density Functional Theory (DFT) calculations allowed me to find out

what would be the conformers of the interacting species and which ones would

contribute to the formation of final complexes. This study concluded with no

interaction between the two species.

In chapter 4, I studied the formation of the halogen bond between 4-benzyl-

1,3-thiazolidine-2-thione (NSS) and iodine in the solution using FT-IR, VCD, 1HNMR, and UV-vis spectroscopy techniques. DFT simulations were carried out to find

out the most stable conformers of the interacting species and the formation of final

complexes. This study concluded with discovery of a new halogen bond interaction

motif between the two species.

In chapter 5, I studied the formation of halogen bond between 4-benzyl-1,3-

thiazolidine-2-one (NOS) and iodopentafluorobenzene (F5BnI) in the solution using

FT-IR, VCD, 1H-NMR, and 19F-NMR spectroscopy. Sensitivity of the VCD and 19FNMR spectroscopy allowed me to monitor small changes in the spectra of interacting

species. Consequently with the aid of DFT simulations I was able to suggest the most

probable conformer for the interaction between the donor and acceptor species.

In chapter 6, I studied the formation of halogen bond between 4-benzyl-1,3-

thiazolidine-2-thione (NSS) and iodopentafluorobenzene (F5BnI) in the solution using

FT-IR, VCD, 1H-NMR, and 19F-NMR spectroscopy. 19F-NMR signals does not

suggest a strong interaction between the two species due to the low change in the

chemical shift. Despite the fact that the interaction between these species is weak, we

were able to collect signals from the VCD machine which together with the DFT data

enabled us to suggest a possible structure in the formation of the complex.
Computing Emotion Dynamics from Text and Exploring their use as Biosocial Markers of Overall Well-being
Creators: Teodorescu, Daniela
Publisher: name: University of Alberta Library
Year: 2023

Language is inherently social -- it is influenced by our lived experiences and environments, and impacts the way in which we communicate with each other. Therefore, it is not a surprise that our health impacts our language. The patterns with which emotion changes over time -- emotion dynamics -- is a framework in psychology that is crucial for better understanding overall well-being and mental health. While emotion dynamics (ED) are commonly measured through self-report surveys, recent work has attempted to mitigate limitations of surveys (e.g., limited reach, bias, etc.) through inferring ED from utterances. The utterance emotion dynamics (UED) framework consists of four commonly used metrics, and we expand it by computing two additional metrics inspired by ED work in psychology, for a total of six metrics.

We investigate the relationship between UED and well-being in two domains -- poems written by children across grades and data related to mental health. We compute UED metrics on poems written by children in grades 1 to 12 across seven emotions and find trends of emotion change across grades. For valence, these patterns of emotional change across grades are supported by previous work in psychology. Here, we further explored two other dimensions of emotions (arousal and dominance) and four categorical emotions (anger, fear, joy, and sadness), further contributing novel results for these emotions. We extend this work to characterize the UED of groups with a mental health diagnosis on Twitter. Overall, our work builds upon the UED framework by computing new metrics and applying it to various domains. We demonstrate that patterns of emotional change in text can act as an indicator of overall well-being across domains.
Non perturbative effects of primordial curvature perturbations on the apparent value of a cosmological constant
Creators: name: Romano, Antonio Enea
name: Sanes, Sergio
name: Sasaki, Misao
name: Starobinsky, Alexei A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study effects on the luminosity distance of a local inhomogeneity seeded by primordial curvature perturbations of the type predicted by the inflationary scenario and constrained by the cosmic microwave background radiation. We find that a local underdensity originated from a one, two or three standard deviations peaks of the primordial curvature perturbations field can induce corrections to the value of a cosmological constant of the order of $0.6%,1%,1.5%$ respectively. These effects cannot be neglected in the precision cosmology era in which we are entering. Our results can be considered an upper bound for the effect of the monopole component of the local non linear structure which can arise from primordial curvature perturbations and requires a fully non perturbative relativistic treatment.
description: 8 pages, 6 figures, 1 table, references added, revised version accepted for publication in EPL
Deliverable D-JRP-TOXOSOURCES-WP2.3 Report on regional variation of prevalence and risk factors of human T. gondii infection within Europe
Creators: name: Friesema, Ingrid
name: Vestergaard, Lasse
name: Opsteegh, Marieke
name: Jokelainen, Pikka
Publisher: name: Zenodo
Year: 2022
Subjects: Toxoplasma gondii
TOXOSOURCES

description: Deliverable D-JRP-TOXOSOURCES-WP2.3 Report on regional variation of prevalence and risk factors of human T. gondii infection within Europe 
Strong Higgs Interactions at a Linear Collider
Creators: name: Contino, Roberto
name: Grojean, Christophe
name: Pappadopulo, Duccio
name: Rattazzi, Riccardo
name: Thamm, Andrea
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the impact of Higgs precision measurements at a high-energy and high-luminosity linear electron positron collider, such as CLIC or the ILC, on the parameter space of a strongly interacting Higgs boson. Some combination of anomalous couplings are already tightly constrained by current fits to electroweak observables. However, even small deviations in the cross sections of single and double Higgs production, or the mere detection of a triple Higgs final state, can help establish whether it is a composite state and whether or not it emerges as a pseudo-Nambu-Goldstone boson from an underlying broken symmetry. We obtain an estimate of the ILC and CLIC sensitivities on the anomalous Higgs couplings from a study of WW scattering and hh production which can be translated into a sensitivity on the compositeness scale 4πf, or equivalently on the degree of compositeness ξ=v^2/f^2. We summarize the current experimental constraints, from electroweak data and direct resonance searches, and the expected reach of the LHC and CLIC on ξand on the scale of the new resonances.
description: 47 pages, 11 figures. v2: eq. 25 has been fixed and the sensitivities quoted in the conclusions slightly revised. Final version to appear on JHEP
The surface density of states of layered {\it f}-electron materials
Creators: name: Peters, Robert
name: Kawakami, Norio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically analyze the surface density of states of heavy fermion materials such as CeCoIn$_5$. Recent experimental progress made it possible to locally probe the formation of heavy quasi-particles in these systems via scanning tunneling microscopy, in which strongly temperature-dependent resonances at the Fermi energy have been observed. The shape of these resonances varies depending on the surface layer, i.e. if Cerium or Cobalt terminates the sample. We clarify the microscopic origin of this difference by taking into account the layered structure of the material. Our simple model explains all the characteristic properties observed experimentally, such as a layer-dependent shape of the resonance at the Fermi energy, displaying a hybridization gap for the Cerium-layer and a peak or dip structure for the other layers. Our proposal resolves the seemingly unphysical assumptions in the preceding analysis based on the two-channel cotunneling model.
description: 4 pages
Novel Techniques to Measure Micron-Scale Gravity
Creators: name: Hough, Emmett
Publisher: name: Stanford Digital Repository
Year: 2023
Subjects: subject: Optically-Levitated Microspheres
subject: Gravity--Measurement
subject: Computer simulation
subject: Hardware

description: The gravitational force, while understood precisely at large distances, has not been measured on scales below a few tens of microns. Recently, the use of optically levitated sensors has shown promising results as a technique to probe parameter space at these scales.

However, the sensitivity of these experiments seems currently to be limited by backgrounds.  These backgrounds are inherent to current measurement schemes that rely on density-modulated attractors driven sinusoidally in close proximity to an optically-levitated dielectric microsphere to induce and measure a time-varying gravitational signal. Three limitations of this technique can be connected to the sinusoidal motion:  mechanical backgrounds from the acceleration of the attractor, electrostatic backgrounds coupling to the microsphere’s permanent dipole moment, and optical backgrounds from scattered light. 

One path towards eliminating these backgrounds is to use a rotating disk with various built-in density modulations. Here, I report on the efforts of understanding and implementing such a rotary attractor in our existing system. Specifically, I build a signal model using a FEM simulation which informs optimal density profiles for manufacturing, use microscopic video registration to characterize the stability of hardware, and outline the steps needed for a full implementation.
Dynamic universality class of Model C from the functional renormalization group
Creators: name: Mesterházy, David
name: Stockemer, Jan H.
name: Palhares, Leticia F.
name: Berges, Jürgen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We establish new scaling properties for the universality class of Model C, which describes relaxational critical dynamics of a nonconserved order parameter coupled to a conserved scalar density. We find an anomalous diffusion phase, which satisfies weak dynamic scaling while the conserved density diffuses only asymptotically. The properties of the phase diagram for the dynamic critical behavior include a significantly extended weak scaling region, together with a strong and a decoupled scaling regime. These calculations are done directly in 2 < d < 4 space dimensions within the framework of the nonperturbative functional renormalization group. The scaling exponents characterizing the different phases are determined along with subleading indices featuring the stability properties.
description: 5 pages, 3 figures; PRB version, minor changes
Finite extensions of Bessel sequences
Creators: name: Bakić, Damir
name: Berić, Tomislav
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 42C15

description: The paper studies finite extensions of Bessel sequences in infinite-dimensional Hilbert spaces. We provide a characterization of Bessel sequences that can be extended to frames by adding finitely many vectors. We also characterize frames that can be converted to Parseval frames by finite-dimensional perturbations. Finally, some results on excesses of frames and near-Riesz bases are derived.
description: 13 pages
D-JRP-TOXOSOURCES-WP3.5 Report on occurrence of T. gondii in selected fresh produce in different regions in Europe
Creators: name: Lalle, Marco
name: Betson, Martha
name: Alvarez Garcia, Gema
name: Calero Bernal, Rafael
name: Jokelainen, Pikka
Publisher: name: Zenodo
Year: 2022
Subjects: Toxoplasma gondii
TOXOSOURCES

description: Deliverable D-JRP-TOXOSOURCES-WP3.5 Report on occurrence of T. gondii in selected fresh produce in different regions in Europe
Antiferro Quadrupole Orders in Non-Kramers Doublet Systems
Creators: name: Hattori, Kazumasa
name: Tsunetsugu, Hirokazu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate antiferro quadrupole orders in systems with non-Kramers doublet ground state with total angular momentum J=4 in T_d point group symmetry. We demonstrate that a pure O_2^2 antiferro quadrupole order is impossible in general crystalline-electric field potential and should be accompanied by ferro O_2^0 quadrupole moment. The temperature and magnetic-field phase diagram is obtained by mean-field approximation of intersite quadrupole interactions and the excitation spectrum is analyzed by "spin"-wave approximations. Gapless excitations emerge at the boader of antiferro O_2^2 quadrupole phases under magnetic field. Quadrupole susceptibilities in the antiferro quadrupole ordered state exhibit unusual singularity and especially the uniform quadrupole susceptibility diverges in addition to the staggered ones. These unusual singularities are also realized at the critical field along [111] direction. We also discuss recent experimental results in PrT_2X_{20}(T=Ir, Rh, Ti, V, and X=Zn, Al).
description: 21 pages, 19 figures, 1 table, published version
Wide Input Voltage Inverter Configurations and Control Systems for Renewable Energy Resources
Creators: Mehrabi Gohari, Zohre
Publisher: name: University of Alberta Library
Year: 2023

Nowadays, among renewable energy sources, PV systems are highly popular due to their easy installation and affordability. A key component of the PV system is the inverter, which can significantly affect the reliability, efficiency, and power quality of the system. The PV inverters are required to track the maximum power point (MPP) of the panel to maximize the production of the system. To achieve this goal, the inverter must be able to generate the required output waveforms for a wide range of input voltages. Normally, two-stage inverters are used to achieve this goal and produce high-quality output power; however, both stages process the full output power and have a high number of reactive components with high switching stress which can result in lower power density and higher losses of the converter. In this thesis, new topologies are proposed to reduce the required number of passive components for the inverter while allowing it to operate for a wide range of input voltages and maintain the power quality of the output.

The first proposed design features an extended input voltage range using a cascaded full-bridge inverter with a cascaded floating capacitor, leveraging low-frequency operation to generate fundamental output voltage components. It is coupled with low-voltage high-frequency operation to mitigate harmonics. A comprehensive control mechanism is used to regulate the modulation angle of the low-frequency full bridge. Additionally, a synchronous (or DQ) reference frame controller is used to regulate current and enable MPP tracking. To further reduce the blocking voltage of the capacitor-connected full bridge, the second structure replaces the PV-connected full bridge with a T-type inverter, halving the blocking voltage.

The flyback-assisted inverter is also proposed to further extend the inverter's operating input voltage range. This topology integrates cascaded full-bridge inverters with a flyback converter. This configuration allows the high-frequency full bridge to process a portion of the power based on input voltage. Precise control mechanisms for determining modulation angles and maximum power point tracking (MPP) in PV systems are implemented. Furthermore, the controller deactivates the flyback converter when the photovoltaic (PV) voltage reaches an optimal level for generating the desired output voltage. This reduces switching losses and can further improve converter efficiency.

Furthermore, a cascaded full-bridge converter with a single switching frequency is proposed to accommodate the broad voltage range of the flyback-assisted converter, while minimizing component count, and improving power density. A new control structure for the fast and robust operation of the inverter is proposed. These control mechanisms can independently regulate the power of each full bridge, allowing the converter to operate within a wide range of input voltages.
Didelphimorphia Gill 1872
Creators: name: Gardner, Alfred L.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Didelphimorphia

description: ORDER DIDELPHIMORPHIA SYNONYMS: Marsupialia, Ameridelphia. COMMENTS: Includes Ameridelphia (see Aplin and Archer, 1987; Marshall et al., 1990; and Szalay, 1982); but not Microbiotheriidae (Marshall et al., 1990; contra Reig et al., 1987).
description: Published as part of Alfred L. Gardner, 1993, Order Didelphimorphia, pp. 15-23 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 15, DOI: 10.5281/zenodo.7353070
description: {"references": ["Aplin, K. P., and M. Archer. 1987. Recent advances in marsupial systematics with a new syncretic classification. Pp. xv-lxxii, in Possums and opossums: Studies in evolution (M. Archer, ed.). Surrey Beatty and Sons Pty. Ltd. and Royal Zoological Society of New South Wales, Sydney, 1: 1 - 400.", "Marshall, L. G., J. A. Case, and M. O. Woodburne. 1990. Phylogenetic relationships of the families of marsupials. Pp. 433 - 506, in Current mammalogy (H. H. Genoways, ed.). Plenum Press, New York, 2: 1 - 577.", "Szalay, F. 1982. A new appraisal of marsupial phylogeny and classification. Pp. 621 - 640, in Carnivorous marsupials (M. Archer, ed.). Royal Zoological Society of New South Wales, Mosman, 1: 1 - 397; 2: 397 - 804.", "Reig, O. A., J. A. W. Kirsch, and L. G. Marshall. 1987. Systematic relationships of the living and Neocenozoic American opossum-like marsupials (suborder Didelphimorphia) with comments on the classification of these and of the Cretaceous and Paleogene New World and European metatherians. Pp. 1 - 92, in Possums and opossums: Studies in evolution (M. Archer, ed.). Surrey Beatty and Sons Pty. Ltd. and Royal Zoological Society of New South Wales, Sydney, 1: 1 - 400, 4 pls."]}
Reduced density matrix for nonequilibrium steady states: A modified Redfield solution approach
Creators: name: Thingna, Juzar
name: Wang, Jian-Sheng
name: Hänggi, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We describe a method to obtain the reduced density matrix (RDM) correct up to second order in system-bath coupling in \emph{nonequilibrium} steady state situations. The RDM is obtained via a scheme based on analytic continuation, using the time-local Redfield-like quantum master equation, which was earlier used by the same authors [J. Chem. Phys. \textbf{136}, 194110 (2012)] to obtain the correct thermal equilibrium description. This nonequilibrium modified Redfield solution is then corroborated with the exact RDM obtained via the nonequilibrium Green's function technique for the quantum harmonic oscillator. Lastly, the scheme is compared to different quantum master equations (QMEs), namely the time-local Redfield-like and the Lindblad-like QMEs, in order to illustrate the differences between each of these approaches.
description: 9 pages, 3 figures. Notation has been modified and several arguments have been revised. This version is accepted in PRE
Didelphidae Gray 1821
Creators: name: Gardner, Alfred L.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Didelphimorphia
Didelphidae

description: Family Didelphidae Gray, 1821. London Med. Repos., 15:308. COMMENTS: Placed in the order Polyprotodontia by Kirsch (1977); also see Aplin and Archer (1987). Does not include Dromiciops; see Kirsch and Calaby (1977).
description: Published as part of Alfred L. Gardner, 1993, Order Didelphimorphia, pp. 15-23 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 15, DOI: 10.5281/zenodo.7353070
description: {"references": ["Aplin, K. P., and M. Archer. 1987. Recent advances in marsupial systematics with a new syncretic classification. Pp. xv-lxxii, in Possums and opossums: Studies in evolution (M. Archer, ed.). Surrey Beatty and Sons Pty. Ltd. and Royal Zoological Society of New South Wales, Sydney, 1: 1 - 400.", "Kirsch, J. A. W., and J. H. Calaby. 1977. The species of living marsupials: An annotated list. Pp. 9 - 26, in The biology of marsupials (B. Stonehouse and D. Gilmore, eds.). University Park Press, Baltimore, 486 pp."]}
Expressive Inflections and Pedagogical Insights in Persian Classical Music: Introducing New Approach to Graphic Notation
Creators: Nazarijou, Afarinsadat
Publisher: name: University of Alberta Library
Year: 2023

My research explores the complex world of Persian classical music and focuses on the relationship between live performance and musical notation. Understanding the development of this musical tradition requires a comprehension of the relationships and structures between its core elements. I have devoted some time to examining how these relationships operate briefly by studying the history and pedagogy of this music repertoire. This expository material on the Persian musical system is a necessary preparatory phase for the principal goal of this project, which is to introduce graphical symbols into transcription of this music to create a bridge between the intricacy of conception, sound, and execution of this musical repertoire and a diacritical and extended notational symbology based on the western notational system that is capable of capturing the inflections and enhancing the expressive portrayal of this musical repertoire.
Deliverable D-JRP-TOXOSOURCES-WP5.3 Report on the inter-laboratory comparison and the pilot studies of WP5
Creators: name: Joeres, Maike
name: Calero Bernal, Rafael
name: Maksimov, Pavlo
name: Caccio, Simone
name: Ortega-Mora, Luis
name: Jokelainen, Pikka
name: Schares, Gereon
name: TOXOSOURCES Consortium
Publisher: name: Zenodo
Year: 2022
Subjects: Toxoplasma gondii
TOXOSOURCES

description: Deliverable D-JRP-TOXOSOURCES-WP5.3 Report on the inter-laboratory comparison and the pilot studies of WP5
On the estimation of gravitational wave spectrum from cosmic domain walls
Creators: name: Hiramatsu, Takashi
name: Kawasaki, Masahiro
name: Saikawa, Ken'ichi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit the production of gravitational waves from unstable domain walls analyzing their spectrum by the use of field theoretic lattice simulations with grid size $1024^3$, which is larger than the previous study. We have recognized that there exists an error in the code used in the previous study, and the correction of the error leads to the suppression of the spectrum of gravitational waves at high frequencies. The peak of the spectrum is located at the scale corresponding to the Hubble radius at the time of the decay of domain walls, and its amplitude is consistent with the naive estimation based on the quadrupole formula. Using the numerical results, the magnitude and the peak frequency of gravitational waves at the present time are estimated. It is shown that for some choices of parameters the signal of gravitational waves is strong enough to be probed in the future gravitational wave experiments.
description: 17 pages, 8 figures; revised version of the manuscript, accepted for publication in JCAP
SOAR - San Francisco Bay Research Coordination Network for Student Opportunities in Avian Research to enhance STEM education and assess human impacts on avian biodiversity (RCN-UBE Introduction)
Creators: name: Trulio, Lynne
name: Dirzo, Rodolfo
name: Sandel, Brody
name: Klock, Metha
name: LaBarbera, Kathleen
name: Wang, Yiwei
Publisher: name: QUBES Educational Resources
Year: 2023

description: The San Francisco Bay Research Coordination Network for Student Opportunities in Avian Research (SOAR) brings together faculty, students, and volunteers to implement an experiential learning and research program focused on the study of birds and their habitats in San Francisco Bay, California. The primary members include universities, non-governmental organizations, and two bird-banding stations. Undergraduate students, especially those from underserved communities, will be introduced to STEM activities in both the field and laboratory, promoting students’ appreciation of birds and their significance for ecological and human wellbeing. The central philosophy of the program is to engage students in the process of science through “learning by doing”, which allows students the opportunity to study science in direct contact with nature. The program will enhance students’ career opportunities while teaching them to be effective stewards of natural resources. The program will produce outdoor learning modules, new courses, cross-institutional sharing of educational resources, publications in research and education venues, internships, and other career-advancement opportunities.
Two Irons in the Fire: Synthesizing Libraries of Programs by Optimizing an Auxiliary Function while Solving Problems
Creators: Rahman, Habibur
Publisher: name: University of Alberta Library
Year: 2023

Program synthesis faces a significant challenge in exploring a vast program space to find a program that satisfies the user's intent. Prior studies have proposed using different methods to guide the synthesis process to address this challenge. We propose a method that offers search guidance which can be orthogonal to guidance provided by the previous functions. It only requires one to define an auxiliary objective function aligned with the synthesis task. Given a synthesis task, a domain-specific language (DSL), a programming language, and a simple domain-dependent auxiliary function, we search for a solution to the task in the language-defined program space using a baseline search algorithm. If the search fails to find a solution, we augment the language by incorporating a library of programs encountered during the search process that optimize the auxiliary function. Then we repeat the search with this library-augmented language. We continue augmenting the language and searching until it finds a solution to the given synthesis task or the system times out. We evaluate our approach in two domains: string manipulation and reverse drawing. In reverse drawing, our language augmentation method substantially increases the number of problems solved using the base algorithm, bottom-up search, outperforming Dreamcoder. In string manipulation, our proposed method increases the number of problems solved for all base algorithms evaluated: Bottom-up Search (BUS), Bee Search, Crossbeam, and Bustle.
Stationary entanglement entropies following an interaction quench in 1D Bose gas
Creators: name: Collura, Mario
name: Kormos, Márton
name: Calabrese, Pasquale
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the entanglement properties of the asymptotic steady state after a quench from free to hard-core bosons in one dimension. The Rényi and von Neumann entanglement entropies are found to be extensive, and the latter coincides with the thermodynamic entropy of the Generalized Gibbs Ensemble (GGE). Computing the spectrum of the two-point function, we provide exact analytical results both for the leading extensive parts and the subleading terms for the entropies as well as for the cumulants of the particle number fluctuations. We also compare the extensive part of the entanglement entropy with the thermodynamic ones, showing that the GGE entropy equal the entanglement one and it is the double of the diagonal entropy.
description: 23 pages, 4 figures, minor corrections added
Caluromys J. A. Allen 1900
Creators: name: Gardner, Alfred L.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Didelphimorphia
Didelphidae
Caluromys

description: Caluromys J. A. Allen, 1900. Bull. Am. Mus. Nat. Hist., 13:189. TYPE SPECIES: Didelphis philander Linnaeus, 1758, by original designation. SYNONYMS: Mallodelphys Thomas, 1920 (type species Didelphis laniger Desmarest, 1820, by original designation; valid as a subgenus to include C. derbianus and C. lanatus); Philander Burmeister, 1856 (preoccupied by Philander Tiedemann, 1808); Sarigua Muirhead, 1819 (part). COMMENTS: Comparatively uncommon to rare in collections, perhaps due to nocturnal and arboreal habits; but probably common in suitable habitat. Vulnerable to loss of tropical forest habitat.
description: Published as part of Alfred L. Gardner, 1993, Order Didelphimorphia, pp. 15-23 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 15, DOI: 10.5281/zenodo.7353070
description: {"references": ["Linnaeus, C. 1758. Systema Naturae per regna tria naturae, secundum classis, ordines, genera, species cum characteribus, differentiis, synonymis, locis. Tenth ed. Vol. 1. Laurentii Salvii, Stockholm, 824 pp.", "Desmarest, A. G. 1820, 1822. Mammalogie ou description des espece de mammiferes. Encyclopedie Methodique. Agasse, Paris, 555 pp., 66 plates.", "Muirhead, L. 1819. Mazology. Pp. 393 - 486 [pls. 353 - 358], in The Edinburgh encyclopaedia, (D. Brewster, ed.). Fourth ed. William Blackwood, Edinburgh, 13: 1 - 744, pls. 347 - 371, 1830."]}
USING PHOTOGRAMMETRY TO ANALYZE THE MORPHOLOGY, TAPHONOMY, AND SEDIMENT DEFORMATION OF BRASILICHNIUM TRACKWAYS ON A SLOPING SAND DUNE FROM THE NAVAJO FORMATION
Creators: Rodriguez, Maria de Jesus
Publisher: name: University of Alberta Library
Year: 2023

The ichnogenus Brasilichnium is widely distributed locally and is found stratigraphically on

eolian sediments of the same western erg system of the Early Jurassic period. Exceptionally wellpreserved

synapsid trackways of Brasilichnium were discovered by researchers from the National Park

Service in 2014. The sandstone slab (locality GLCA #357), located within Glen Canyon National

Recreation Area (GLCA), is found in the Early Jurassic formation known as the Navajo Sandstone. This

study investigates the morphology of the trackways fossilized on the lee side of a sloping dune face,

provides interpretations of the sedimentary structures associated with locomotion, and their taphonomy in

an eolian environment. The track-bearing surface is composed of eleven trackways including

Brasilichnium, one Grallator-like trace, and a few unknown traces that are seen moving in different

orientations relative to each other. This site, named Santucci’s Site after the discoverer, was examined

using structure-from-motion (SfM) photogrammetry to create 3D images of these tracks. These tetrapod

tracks show the trackmakers walking on a dune slip face in an eolian environment and changing direction

while doing so. Sedimentary features include grain flows, or “avalanches”, located below the

Brasilichnium tracks and two sets of wind ripples on the same track-bearing surface. These pes

depressions show an imbalance of weight distribution while the animal was walking on the seemingly

hyper-arid substrate. These trackways show bipedal and quadrupedal locomotion and a change of forward

motion as the trackmakers strolled upslope, downslope, and diagonally across the face of a sloping dune.

In addition to morphological variation, SfM photogrammetry shows how this site has been

impacted in modern times by the fluctuating water level elevations due to a recent megadrought over the

western United States. Photogrammetry performed in 2014 and 2022 show large-grade weathering of

these trackways over the span of eight years. This level of weathering largely affected the preservation of

the trackways, but in a few ways helped expose a few new features.
Using gaps in N-body tidal streams to probe missing satellites
Creators: name: Ngan, Wai-Hin Wayne
name: Carlberg, Raymond G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use N-body simulations to model the tidal disruption of a star cluster in a Milky-Way-sized dark matter halo, which results in a narrow stream comparable to (but slightly wider than) Pal-5 or GD-1. The mean Galactic dark matter halo is modeled by a spherical Navarro-Frenk-White (NFW) potential with subhalos predicted by the LCDM cosmological model. The distribution and mass function of the subhalos follow the results from the Aquarius simulation. We use a matched filter approach to look for "gaps" in tidal streams at 12 length scales from 0.1 kpc to 5 kpc, which appear as characteristic dips in the linear densities along the streams. We find that, in addition to the subhalos' perturbations, the epicyclic overdensities (EOs) due to the coherent epicyclic motions of particles in a stream also produce gap-like signals near the progenitor. We measure the gap spectra - the gap formation rates as functions of gap length - due to both subhalo perturbations and EOs, which have not been accounted for together by previous studies. Finally, we project the simulated streams onto the sky to investigate issues when interpreting gap spectra in observations. In particular, we find that gap spectra from low signal-to-noise observations can be biased by the orbital phase of the stream. This indicates that the study of stream gaps will benefit greatly from high-quality data from future missions.
description: 15 pages, 15 figures, ApJ accepted. Updated to match published version
Analysis and Modernization of Mixture Critical Point Calculation Methods
Creators: Jayaprakash, Vishnu
Publisher: name: University of Alberta Library
Year: 2023

Critical point calculations are a topic of great importance and a fundamental part of classical thermodynamics. While the basis of this field is hundreds of years old, the effective handling of complex, multicomponent fluid mixtures has been an ongoing area of study over the past 50 years. Two major critical point formulations exist (i.e., the root-finding method and the optimization method), each with many modifications and improvements. Despite this, mixture critical point calculation algorithms can be difficult to implement, unreliable, and slow. In recent years, the development of machine learning and modern computer science theory has led to many computational techniques that have the capacity to improve and streamline the mixture critical point calculations. This work investigates the application of modern computational techniques to both root-finding-based and optimization-based mixture critical point calculations. Firstly, we apply the automatic differentiation (AD) technique to both methods. We demonstrate the effectiveness of AD in calculating the thermodynamic derivatives that are involved in critical point calculations. Next, we compare the root-finding methods and the optimization methods in terms of their robustness and accuracy. We find that the root-finding methods are more robust and accurate for simple mixtures. Meanwhile, the global optimization methods are effective in computing the critical points of large, complex mixtures. Finally, we develop a novel procedure that utilizes deep learning models to create predictions of mixture critical points; this procedure can be used to initialize critical point calculations. Our procedure, when implemented into both the root-finding and the global optimization methods, leads to speed and robustness improvements in mixture critical point calculations.
title: Sexual Differences in Survival and Competition in Grasshoppers
Creators: name: Harris, Marianne
Publisher: name: Utah State University
Year: 1998

description: A study was conducted to determine if the proportional survival of the sexes of the grasshopper, Melanoplus sanguinipes (Orthoptera, Acrididae), differs. By stocking cages in the field with grasshoppers with different body size, sex and density combinations, proportional survival could be estimated. This study revealed that, in the absence of predation, there was a lower proportional survival when both sexes were together at high densities as compared to when they together were at low densities, and when both sexes were separate at either density. Even though females, on average, are larger than males, this study found size to be insignificant. This study also revealed that sex was not a contributing factor. One explanation for the survival declining when both sexes are together is the cost in reproduction and both sexes expend comparable energy in reproduction.
Completely positive projections and biproducts
Creators: name: Heunen, Chris
name: Kissinger, Aleks
name: Selinger, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Category Theory (math.CT)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The recently introduced CP*-construction unites quantum channels and classical systems, subsuming the earlier CPM-construction in categorical quantum mechanics. We compare this construction to two earlier attempts at solving this problem: freely adding biproducts to CPM, and freely splitting idempotents in CPM. The CP*-construction embeds the former, and embeds into the latter, but neither embedding is an equivalence in general.
description: In Proceedings QPL 2013, arXiv:1412.7917
Quantum chaotic subdiffusion in random potentials
Creators: name: Ivanchenko, M. V.
name: Laptyeva, T. V.
name: Flach, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Two interacting particles (TIP) in a disordered chain propagate beyond the single particle localization length $ξ_1$ up to a scale $ξ_2 > ξ_1$. An initially strongly localized TIP state expands almost ballistically up to $ξ_1$. The expansion of the TIP wave function beyond the distance $ξ_1 \gg 1$ is governed by highly connected Fock states in the space of noninteracting eigenfunctions. The resulting dynamics is subdiffusive, and the second moment grows as $m_2 \sim t^{1/2}$, precisely as in the strong chaos regime for corresponding nonlinear wave equations. This surprising outcome stems from the huge Fock connectivity and resulting quantum chaos. The TIP expansion finally slows down towards a complete halt -- in contrast to the nonlinear case.
description: 4 pages, 5 figures, Phys. Rev. B (2014), accepted
Caluromys derbianus
Creators: name: Gardner, Alfred L.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Didelphimorphia
Didelphidae
Caluromys
Caluromys derbianus

description: Caluromys derbianus (Waterhouse, 1841). Jardine's Natur. Libr., 11:97. TYPE LOCALITY: None given; restricted to Colombia, Cauca, Cauca Valley (Cabrera, 1958:2). DISTRIBUTION: México, Central America, W Colombia, and W Ecuador. SYNONYMS: aztecus Thomas, 1913; canus Matschie, 1917; centralis Hollister, 1914; fervidus Thomas, 1913; guayanus Thomas, 1899; nauticus Thomas, 1913; pallidus Thomas, 1899; pictus Thomas, 1913; pulcher Matschie, 1917; pyrrhus Thomas, 1901; senex Thomas, 1913. COMMENTS: Reviewed by Bucher and Hoffmann (1980, Mammalian Species, 140).
description: Published as part of Alfred L. Gardner, 1993, Order Didelphimorphia, pp. 15-23 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 15, DOI: 10.5281/zenodo.7353070
description: {"references": ["Cabrera, A. 1958. Dos felidos argentinos ineditos (Mammalia, Carnivora). Neotropica, 3 (12): 70 - 72.", "Hollister, N. 1914. A systematic account of the grasshopper mice. Proceedings of the United States National Museum, 47: 427 - 489.", "Bucher, J. E., and R. S. Hoffmann. 1980. Caluromys derbianus. Mammalian Species, 140: 1 - 4."]}
Caluromys lanatus
Creators: name: Gardner, Alfred L.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Didelphimorphia
Didelphidae
Caluromys
Caluromys lanatus

description: Caluromys lanatus (Olfers, 1818). In W. L. Eschwege, J. Brasilien, Neue Bibliothek. Reisen., 15:206. TYPE LOCALITY: " Paraguay;" restricted to Caazapâ, Caazapâ (Cabrera, 1916). DISTRIBUTION: N and C Colombia, NW and S Venezuela, E Ecuador, E Peru, E Bolivia, E and S Paraguay, N Argentina (Provincia Misiones), and W and S Brazil. SYNONYMS: antioquiae Matschie, 1917; bartletti Matschie, 1917; cahyensis Matschie, 1917; cicur Bangs, 1898; jivaro Thomas, 1913; juninensis Matschie, 1917; lanigera Desmarest, 1820; meridensis Matschie, 1917; modesta Miranda-Ribeiro, 1936; nattereri Matschie, 1917; ochropus Wagner, 1842; ornata Tschudi, 1845; vitalina Miranda-Ribeiro, 1936.
description: Published as part of Alfred L. Gardner, 1993, Order Didelphimorphia, pp. 15-23 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 15, DOI: 10.5281/zenodo.7353070
description: {"references": ["Cabrera, A. 1916. El tipo de Philander laniger Desm. en el Museo de Ciencias Naturales de Madrid. Boletin de la Real Sociedad Espanola de Historia Natural, 16: 514 - 517.", "Desmarest, A. G. 1820, 1822. Mammalogie ou description des espece de mammiferes. Encyclopedie Methodique. Agasse, Paris, 555 pp., 66 plates."]}