cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Monte Carlo Tree Search and Model Uncertainty
Creators: Kohankhaki, Farnaz
Publisher: name: University of Alberta Library
Year: 2022

Monte Carlo Tree Search (MCTS) is a popular tree search framework for choos- ing actions in decision-making problems. MCTS is traditionally applied to applications in which a perfect simulation model is available. However, when the model is imperfect, the performance of MCTS drops heavily.

In this work, we introduce the Uncertainty Adapted MCTS (UA-MCTS) framework; an adaptation of the MCTS framework to model uncertainty. We define model uncertainty as the difference between the actual environment and the imperfect model. In UA-MCTS we modify each of the 4 steps selection, expansion, simulation, and backpropagation in MCTS so that they consider uncertainty. Although we provide a method to learn the uncertainty of the model, UA-MCTS is not restricted to our specific learning method.

In the Reinforcement Learning (RL) domain, we propose the DQ-MCTS framework. DQ-MCTS uses the learned values from DQN, a state of the art model-free RL method, to improve MCTS performance. Since DQN is a model-free method, the errors in the model do not affect the learned values. DQ-MCTS uses DQN learned values to initialize the newly added nodes in the expansion step and to evaluate the last states in the simulation step.

We experimentally evaluate UA-MCTS and DQ-MCTS on the determin- istic domains from the MinAtar test suite. Our results demonstrate that UA- MCTS strongly improves MCTS in the presence of model error, and that DQ-MCTS can perform better than MCTS but not better than DQN.
Uncertainty Methods in Active Reinforcement Learning
Creators: Nuttall,Rohan
Publisher: name: University of Alberta Library
Year: 2022

Some real-world deployments of deep reinforcement learning (RL) may require a human-in-the-loop. Whether to ask-for-help, obtain new demonstrations and data, or handle out-of-distribution states, many methods rely on uncertainty estimates from a neural network to determine when to solicit a human's assistance. In existing work, it is common to rely on variance from an ensemble of models as a proxy for when the agent is uncertain about taking an action, however there has been little investigation into comparing the efficacy of other methods. This thesis compares three methods for uncertainty estimation in the action-advising framework: bootstrapped ensembles, Monte Carlo dropout and variance networks. Additionally, the methods are assessed on whether they produce "calibrated" uncertainty estimates. Variance networks are proposed as being advantageous in the action-advising setting due to their advice efficiency and ability to capture uncertainty about the environment dynamics.
On consecutive primitive elements in a finite field
Creators: name: Cohen, Stephen D.
name: Silva, Tomás Oliveira e
name: Trudgian, Tim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11T30, 11N69

description: For $q$ an odd prime power with $q>169$ we prove that there are always three consecutive primitive elements in the finite field $\mathbb{F}_{q}$. Indeed, there are precisely eleven values of $q \leq 169$ for which this is false. For $4\leq n \leq 8$ we present conjectures on the size of $q_{0}(n)$ such that $q>q_{0}(n)$ guarantees the existence of $n$ consecutive primitive elements in $\mathbb{F}_{q}$, provided that $\mathbb{F}_{q}$ has characteristic at least~$n$. Finally, we improve the upper bound on $q_{0}(n)$ for all $n\geq 3$.
description: 10 pages, 2 tables
Modeling What We Sample and Sampling What We Model: Challenges for Zooplankton Model Assessment.
Creators: name: Everett, Jason D.
name: Baird, Mark E.
name: Buchanan, Pearse
name: Bulman, Cathy
name: Davies, Claire
name: Downie, Ryan
name: Griffiths, Chris
name: Heneghan, Ryan
name: Kloser, Rudy J.
name: Laiolo, Leonardo
name: Lara-Lopez, Ana
name: Lozano-Montes, Hector
name: Matear, Richard J.
name: McEnnulty, Felicity
name: Robson, Barbara
name: Rochester, Wayne
name: Skerratt, Jenny
name: Smith, James A.
name: Strzelecki, Joanna
name: Suthers, Iain M.
name: Swadling, Kerrie M.
name: Van Ruth, Paul
name: Richardson, Anthony J.
Publisher: name: UNESCO/IOC
Year: 2017
Subjects: subject: Zooplankton
subject: Modelling
subject: Continuous plankton recorder
subject: Ecosystem models
subject: Net sampling
subject: Parameter Discipline::Biological oceanography
subject: Instrument Type Vocabulary::plankton recorders
subject: Instrument Type Vocabulary::plankton counters

description: Zooplankton are the intermediate trophic level between phytoplankton and fish, and are an important component of carbon and nutrient cycles, accounting for a large proportion of the energy transfer to pelagic fishes and the deep ocean. Given zooplankton’s importance, models need to adequately represent zooplankton dynamics. A major obstacle, though, is the lack of model assessment. Here we try and stimulate the assessment of zooplankton in models by filling three gaps. The first is that many zooplankton observationalists are unfamiliar with the biogeochemical, ecosystem, and size-based and individual-based models that have zooplankton functional groups, so we describe their primary uses and how each typically represents zooplankton. The second gap is that many modelers are unaware of the zooplankton data that are available, and are unaccustomed to the different zooplankton sampling systems, so we describe the main sampling platforms and discuss their strengths and weaknesses for model assessment. Filling these gaps in our understanding of models and observations provides the necessary context to address the last gap – a blueprint for model assessment of zooplankton. We detail two ways that zooplankton biomass/abundance observations can be used to assess models: data wrangling that transforms observations to be more similar to model output; and observation models that transform model outputs to be more like observations. We hope that this review will encourage greater assessment of zooplankton in models and ultimately improve the representation of their dynamics.
Plaque, Women Airforce Service Pilots, Randolph Air Force Base
Creators: name: Walter, Chelsea
Publisher: name: Randolph Air Force Base
Year: 2010
Subjects: subject: Universal City
valueUri: https://core.tdar.org/browse/geographic-keyword/42082/universal-city
subject: Joint Base San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/83018/joint-base-san-antonio
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Randolph Air Force Base
valueUri: https://core.tdar.org/browse/geographic-keyword/78971/randolph-air-force-base
subject: WASPS
valueUri: https://core.tdar.org/browse/other-keyword/153380/wasps
subject: Historic Background Research
valueUri: https://core.tdar.org/browse/investigation-type/18/historic-background-research
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: Draft of a plaque honoring the Women Airforce Service Pilots, WASPs. On July 1st, 2009 The President of the United States signed Public Law to award a Congressional Gold Medal to the Women Airforce Service Pilots. This plaque was dedicated June 30th, 2010 by General Stephen R. Lorens, USAF, Commander, Air Education and Training Command, Randolph Air Force Base.
Mapping glycan binding profiles of the gut microbes using novel liquid glycan array
Creators: Yadav, Pravina
Publisher: name: University of Alberta Library
Year: 2022

The role of glycan binding of gut microbes has been shown in colonization and interactions between microbiota and host. While glycan binding of selected pathogens has been explored in a targeted way, there has been limited research on glycan binding patterns of gut commensals. This has partially been limited by tools available to assess glycan binding. In this thesis a novel Liquid glycan array (LiGA), which comprises a library of glycosylated M13 phage particles with silent DNA barcodes in the phage genome, was used to test glycan binding profiles of gut bacteria. The potential role of glycan binding in host specificity of Limosilactobacillus reuteri was explored by comparing 16 L. reuteri strains consisting of 4 isolates from each of murine, porcine, poultry and human lineages.  Many of the enriched glycans were shared amongst L. reuteri isolates, however, there was no evidence that isolates from the same host shared greater glycan binding similarity, thus glycan binding profile did not appear to be a key determinant of host specificity. However, some strains showed notable unique glycan enrichment. In particular a poultry isolate L. reuteri JCM1081 showed the drastically higher enrichment of Fucα1-2Galβ-Sp (Fold change (FC) = 88, FDR < 0.0001) and Galβ1-4Glcβ-P4 (FC = 46, FDR < 0.0001). The unique binding profile of this isolate conforms with observations of enhanced adhesive capacity to gut epithelial cells.

 Next, to understand the profiles of glycan binding of other bacterial species, we tested glycan binding of taxonomically diverse bacteria from three different phyla Firmicutes/Bacillota, Bacteroidetes/Bacteroidota, Proteobacteria/Pseudomonadota consisting of 9 different species L. reuteri, Escherichia coli, Bacteroides dorei, Bacteroides thetaiotamicron, Bacteroides fragilis, Bacteroides vulgatus, Limosilactobacillus mucosae, Citrobacter fruendii, and Clostridium ramosum. Results indicate that the taxonomic closeness leads to similar glycan binding of gut bacteria with few exceptions.

We established that LiGA is an effective new tool for characterizing glycan binding of bacteria. Exploring glycan binding profiles of more commensal bacteria using this novel approach will provide new insights into intestinal microbial ecology and provide strategies to manipulate the microbial community through the provision of glycans.
To join or not to join?–A framework for the evaluation of enterprise blockchain consortia
Creators: name: Schwarzer, Max
name: Gürpinar, Tan
name: Henke, Michael
Publisher: name: TU Dortmund
Year: 2022
Subjects: subject: Distributed ledger technology
subject: Blockchain
subject: Enterprise consortia
subject: Supply chain management
subject: Technology evaluation model
subject: 620
subject: 670
subject: Distributed Ledger Technologie
subject: Blockchain
subject: Konsortium
subject: Supply Chain Management
subject: Technikbewertung

description: Within the past years, enterprise blockchain solutions were frequently developed within different industry consortia. In most cases, this resulted in isolated solutions competing against each other due to similar approaches and goals. Today, decision makers do not necessarily need to establish entirely new blockchain consortia, as established ones already exist, and participation is a considerable way to avoid unreasonable efforts. In this paper, we apply an iterative literature review to identify different factors relevant for practitioners, who face the challenge of joining an existing enterprise blockchain consortium. In a second step, we discuss these factors utilizing supply chain management as a role model. As a main finding, we propose an evaluation framework for the purpose of enterprise blockchain consortium analysis. Additionally, we provide several questions relevant for practitioners during their evaluation stages. With our evaluation framework we contribute to blockchain research, where - despite its high relevance - the topic of consortium evaluation has so far been neglected. We also contribute to research in the field of technology evaluation by proposing and merging five different evaluation dimensions.
A method for externally attaching radio transmitters to minimize dermal irritation
Creators: name: Crook, D. A
Publisher: name: La Trobe
Year: 2023

description: La Trobe University Faculty of Science, Technology and Engineering Murray Darling Freshwater Research Centre

MDFRC item.

A method for externally attaching transmitters to fishes is described that reduces contact between the transmitter and the fish, thus reducing the potential for dermal irritation.
Substrate-supported thermometry platform for nanomaterials like graphene, nanotubes, and nanowires
Creators: name: Li, Zuanyi
name: Bae, Myung-Ho
name: Pop, Eric
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate a substrate-supported thermometry platform to measure thermal conduction in nanomaterials like graphene, with no need to suspend them. We use three-dimensional simulations and careful uncertainty analysis to optimize the platform geometry and to obtain the sample thermal conductivity. The lowest thermal sheet conductance that can be sensed with <50% error is ~25 nW/K at room temperature, indicating applicability of this platform to graphene or polymer thin films, nanotube or nanowire arrays, even a single Si nanowire. The platform can also be extended to plastic substrates, and could find wide applicability in circumstances where fabrication challenges and low yield associated with suspended platforms must be avoided.
description: with Supplementary Material
$Λ$ - anomaly in the hadron chemical freeze-out
Creators: name: Sagun, V. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A new way to overcome the $Λ$ hyperon selective suppression, which is known as the $Λ$-anomaly, has been suggested. In particular, the additional radius of a $Λ$ hyperon is introduced into the model of hadron resonance gas with the multicomponent hard-core repulsion. The proposed approach allows one to describe the hadron multiplicity ratios measured at the AGS, SPS and RHIC energies with the accuracy $χ^{2}/dof=$52/55$\simeq $0.95.
description: 9 pages, 13 figures
Sample of optically unidentified X-ray binaries in the Galactic bulge. Constraints on the physical nature from infrared photometric surveys
Creators: name: Zolotukhin, Ivan
name: Revnivtsev, Mikhail
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the archival near-infrared and mid-infrared observations of 7 persistent X-ray sources situated in the Galactic bulge using data from the UKIRT Infrared Deep Sky Survey (UKIDSS), Spitzer Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) and the Wide-field Infrared Survey Explorer (WISE) all-sky survey. We were able to successfully identify, or provide upper flux limits for the systems SAX J1747.0-2853, IGR J17464-2811, AX J1754.2-2754, IGR J17597-2201, IGR J18134-1636, IGR J18256-1035, Ser X-1 and constrain the nature of these systems. In the case of IGR J17597-2201 we present arguments that the source accretes matter from the stellar wind rather than via Roche lobe overflow of the secondary. We suggest that, at its X-ray luminosity of $10^{34-35}$ erg s$^{-1}$, we are probing the poorly known class of wind-fed low-mass X-ray binaries (LMXBs).
description: 11 pages, 5 figures, accepted to MNRAS
Design Report, New Entrance Design for Hangars 12, 13, and 64, Randolph Air Force Base, Texas
Creators: name: Walter, Chelsea
Year: 1992
Subjects: subject: Randolph Field Historic Landmark District
valueUri: https://core.tdar.org/browse/geographic-keyword/83364/randolph-field-historic-landmark-district
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Randolph Air Force Base
valueUri: https://core.tdar.org/browse/geographic-keyword/78971/randolph-air-force-base
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Military Structure
valueUri: https://core.tdar.org/browse/site-type/322/military-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: Hangar 13
valueUri: https://core.tdar.org/browse/other-keyword/158749/hangar-13
subject: Hangar 12
valueUri: https://core.tdar.org/browse/other-keyword/158750/hangar-12
subject: Hangar 64
valueUri: https://core.tdar.org/browse/other-keyword/158727/hangar-64
subject: Aircraft Hangar
valueUri: https://core.tdar.org/browse/other-keyword/158726/aircraft-hangar
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: A number of original aircraft hangars at Randolph Air Force Base have been converted into administration and squadron operations buildings. Hangars 12 and 64 were converted to flying training squadron operations functions and Hangar 13 was converted to the Air Force Occupational Measurement Center. Hangars 12 and 64 specifically only have entrance through the original hangar (Judas) doors which do not meet fire code. This packet details the design plans for new entrances to these hangars that will meet standard fire code.
A QoS-Aware Scheduling Algorithm for High-Speed Railway Communication System
Creators: name: Xu, Shengfeng
name: Zhu, Gang
name: Shen, Chao
name: Ai, Bo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: With the rapid development of high-speed railway (HSR), how to provide the passengers with multimedia services has attracted increasing attention. A key issue is to develop an effective scheduling algorithm for multiple services with different quality of service (QoS) requirements. In this paper, we investigate the downlink service scheduling problem in HSR network taking account of end-to-end deadline constraints and successfully packet delivery ratio requirements. Firstly, by exploiting the deterministic high-speed train trajectory, we present a time-distance mapping in order to obtain the highly dynamic link capacity effectively. Next, a novel service model is developed for deadline constrained services with delivery ratio requirements, which enables us to turn the delivery ratio requirement into a single queue stability problem. Based on the Lyapunov drift, the optimal scheduling problem is formulated and the corresponding scheduling service algorithm is proposed by stochastic network optimization approach. Simulation results show that the proposed algorithm outperforms the conventional schemes in terms of QoS requirements.
description: 6 pages, 3 figures, accepted by IEEE ICC 2014 conference
Response from Stanley Graves to John Brenneman, Proposed Renovations for Building 129 Former Cavalry Barracks, Fort Sam Houston, Texas
Creators: name: Fleming, Sharon E.
name: Graves, Stanley O.
Publisher: name: Texas Historical Commission
Year: 1997
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Military Structure
valueUri: https://core.tdar.org/browse/site-type/322/military-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: Cavalry Barracks
valueUri: https://core.tdar.org/browse/other-keyword/158087/cavalry-barracks
subject: Building 129
valueUri: https://core.tdar.org/browse/other-keyword/146282/building-129
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: The Texas Historical Commission has received and reviewed the 95% complete documents from Fort Sam Houston for the proposed renovations for Building 129 that formerly served as the cavalry barracks. This letter details the Commission's comments and recommendations for the project. Copied to this correspondence is David Brigham (Cultural Resource Manager, Fort Sam Houston) and Richard Keeler (Marmon Mok Architect Engineers Interiors).
Timing of glacial - non-glacial stages in Finland: An exploratory analysis of the OSL data
Creators: name: Sarala, P.
name: Lunkka, J. P.
name: Sarajärvi, V.
name: Sarala, O.
name: Filzmoser, P.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: The Optically Stimulated Luminescence (OSL) age database of Finland was established, and it includes all of the published OSL age results from different sediment sequences in Finland. The OSL database includes ~180 published OSL ages ranging from 235,000 years to 300 years; that is, from the Middle Saalian interstadial to the present. Two statistical clustering methods, K-means and model-based clustering with the package mclust, were used to analyze the internal structure of the assembled OSL data. The results of these analyses were also compared to the established Northwest European (Fennoscandian) chronostratigraphical stages. When the data were analyzed by the K-means method, the “right” number of clusters (K) was seven. The model-based clustering method (K = five) created bigger clusters for the youngest and the oldest ages compared to the K-means clusters. Both methods show that the ages followed the increasing trend from the youngest to the oldest, and the standard error of ages was constantly increasing except in the age group 70–115 ka, where the standard errors were exceptionally high. Seven clusters obtained from the age data corresponded relatively well with the number of stratigraphically established interglacials and interstadials in the late Middle and Late Pleistocene in Fennoscandia. The exceptionally large standard error of ages in the Early Weichselian age group 70–115 ka might result from mixing of heterogeneous and poorly or partly bleached mineral material from both Eemian and Early Weichselian sediment layers. The OSL-dated Middle Saalian interstadial sediments in the data support a strong stadial and interstadial variation also before the Late Pleistocene.
Quark matter subject to strong magnetic fields: phase diagram and applications
Creators: name: Menezes, Débora P.
name: Pinto, Marcus B.
name: Providência, Constança
name: Costa, Pedro
name: Ferreira, Márcio
name: Castro, Luis B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the present work we are interested in understanding various properties of quark matter subject to strong magnetic fields described by the Nambu-Jona-Lasinio model with Polyakov loop. We start by analysing the differences arising from two different vector interactions in the Lagrangian densities, at zero temperature, and apply the results to stellar matter. We then investigate the position of the critical end point for different chemical potential and density scenarios.
description: Talk given at the "XXXVII Brazilian Meeting on Nuclear Physics (XXXVII RTFNB)", Maresias, SP, Brazil, 8-12 September 2014
title: Difficulties in solving algebra story problems with secondary pupils
Creators: name: Christou, Konstantinos
Publisher: name: University of Glasgow
Year: 2001
Subjects: subject: Mathematics education.

description: The purpose of this study was to investigate students capability in applying mathematics in real life. In order to do this it was decided to explore students' performance in representing algebra story problems. This research investigates the reasons for the difficulties facing the majority of students in representing algebra story problems. The research took place in a town called Trikala in Greece and a sample of 90 high school students aged between 15-17 years from a private support school was used. Two cognitive factors believed to have an important influence on pupil's performance in representing word problems were measured, namely: working memory space capacity and field-dependence/independence. To determine the working memory space capacity of the students, the Digit Backwards Test (D.B.T.) was used and, to measure the degree of field-dependence/independence of the pupils, the Hidden Figure Test (H.F.T) was used. In order to determine students' attitudes towards mathematics, a questionnaire was designed which tested factors like motivation, self confidence, influence from the close environment and students' preferences for disciplines of the curriculum. In order to test students capability in representing algebra story problems and the role that working memory space (X-space) and field-dependence/independence have in success in this task, a mathematics test was designed. The test included 10 'compare' algebra story problems taken from the literature or produced for the sake of this project. The students were asked to write down the equation that represents the given statement. The information processing model and other approaches to the difficulties students have with these problems were applied to design this mathematics test and also to put the problems onto a scale according to the difficulty (Z-demand) they placed on the pupils working memory capacity. It was concluded that working memory space and field-dependence/independence were significant predictors for problem representation success. Thus, high working memory space capacity students performed better in the mathematics test than their intermediate or low working memory space capacity counterparts. Failure occurred in the mathematics test when the Z-demand was quite close to the pupil's measured working memory capacity as a possible result of overloading of the working memory space. Students' performance in the test improved as the pupils went from being field-dependent to field- independent. Students' attitudes towards mathematics influences achievement in the mathematics test. Motivation, self confidence, father's level of education, are positively correlated factors to students' achievement. Pupils who have a middle preference between mathematics and language classes had the best performance. Knowledge of language is a significant predictor for success in representing algebra story problems.
OAHP Inventory, Building 2183 Stable, Fort Sam Houston, Texas
Creators: name: Walter, Chelsea
Publisher: name: Office of Archaeology and Historic Preservation
Year: 1978
Subjects: subject: Fort Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/83681/fort-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: OAHP
valueUri: https://core.tdar.org/browse/other-keyword/138292/oahp
subject: Stable
valueUri: https://core.tdar.org/browse/other-keyword/41907/stable
subject: Building 2183
valueUri: https://core.tdar.org/browse/other-keyword/146533/building-2183
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Architectural Survey
valueUri: https://core.tdar.org/browse/investigation-type/2/architectural-survey
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: An inventory form by the Office of Archaeology and Historic Preservation for Building 2183 at Fort Sam Houston, Texas. The structure was built in 1965 as a stable.
A laser-lock concept to reach cm/s-precision in Doppler experiments with Fabry-Perot wavelength calibrators
Creators: name: Reiners, A.
name: Banyal, R. K.
name: Ulbrich, R. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: State-of-the-art Doppler experiments require wavelength calibration with precision at the cm/s level. A low-finesse Fabry-Perot interferometer (FPI) can provide a wavelength comb with a very large bandwidth as required for astronomical experiments, but unavoidable spectral drifts are difficult to control. Instead of actively controlling the FPI cavity, we propose to passively stabilize the interferometer and track the time-dependent cavity length drift externally. A dual-finesse cavity allows drift tracking during observation. The drift of the cavity length is monitored in the high-finesse range relative to an external standard: a single narrow transmission peak is locked to an external cavity diode laser and compared to an atomic frequency. Following standard locking schemes, tracking at sub-mm/s precision can be achieved. This is several orders of magnitude better than currently planned high-precision Doppler experiments. It allows freedom for relaxed designs rendering this approach particularly interesting for upcoming Doppler experiments. We also show that the large number of interference modes used in an FPI allows us to unambiguously identify the interference mode of each FPI transmission peak defining its absolute wavelength solution. The accuracy reached in each resonance with the laser concept is then defined by the cavity length that is determined from the one locked peak and by the group velocity dispersion. The latter can vary by several 100m/s over the relevant frequency range and severely limits the accuracy of individual peak locations. A potential way to determine the absolute peak positions is to externally measure the frequency of each individual peak with a laser frequency comb (LFC). Thus, the concept of laser-locked FPIs may be useful for applying the absolute accuracy of an LFC to astronomical spectrographs without the need for an LFC at the observatory.
description: 9 pages, accepted for publication in A&A, abstract abbreviated
Le commerce électronique dans le secteur de la distribution alimentaire
Creators: name: Etcheverry, Clara
name: Etcheverry, Clara
Publisher: name: Unknown
Year: 2022
Subjects: Agricultural and Food Policy
Industrial Organization

description: Ces vingt dernières années, le commerce en ligne a connu un réel essor notamment dans le secteur alimentaire. Nous analysons l’effet de l’émergence du e-commerce sur le comportement du consommateur ainsi que son bien-être, la concurrence en aval et le partage des profits entre distributeurs et industriels. A partir de données d’achats alimentaires de ménages français collectés par la société Kantar WorldPanel, nous montrons que les comportements d’achat des consommateurs sont différents en magasin et en ligne. En effet, la demande en magasin est moins élastique que la demande en ligne. Malgré une hausse des prix en magasin, le e-commerce a globalement augmenté le bien-être des ménages français via une diversification de l’offre proposée. En revanche, ce mode de distribution n’a pas été profitable pour tous les distributeurs. Nous observons que les distributeurs ayant choisi de développer des entrepôts distants des magasins existants ont augmenté leur profit alors que ceux ayant choisi d’accoler ce service aux magasins existants ont vu leur profit diminuer. Enfin, les résultats révèlent que le développement du e-commerce est profitable aux industriels dans le secteur des boissons non alcoolisées et ce, en raison d’une augmentation de leurs marges. La hausse du prix de gros négocié entre industriels et distributeurs s’explique par une baisse du pouvoir de négociation des distributeurs développant le e-commerce.
Response from Stanley Graves to John Brenneman, Relocate Air Force Air Base Ground Defense Training to Camp Bullis, Texas
Creators: name: Fleming, Sharon E.
name: Graves, Stanley O.
Publisher: name: Texas Historical Commission
Year: 1995
Subjects: subject: Comal (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3222/comal-county
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Camp Bullis
valueUri: https://core.tdar.org/browse/geographic-keyword/82533/camp-bullis
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Military Structure
valueUri: https://core.tdar.org/browse/site-type/322/military-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: Ground Defense Training
valueUri: https://core.tdar.org/browse/other-keyword/156859/ground-defense-training
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: Fort Sam Houston submitted to the Texas Historical Commission plans for new construction associated with the relocation of Air Force Air Base Ground Defense Training to Camp Bullis. The Commission concurs with the determination that this work will have "no adverse effect" on the historic resource. Copied to this correspondence is Mike Hilger, Historical Architect, Fort Sam Houston.
Investigating Generate and Test for Online Representation Search with Softmax Outputs
Creators: Elsayed, Mohamed
Publisher: name: University of Alberta Library
Year: 2022

Modern representation learning methods perform well on offline tasks and primarily revolve around batch updates. However, batch updates preclude those methods from focusing on new experience, which is essential for fast online adaptation. In this thesis, we study an online and incremental representation search algorithm called Generate and Test, which continually replaces the least useful features with newly generated features. In this algorithm, the utility of features is estimated by a heuristic tester based on the magnitude of their corresponding outgoing weights; the least useful features are those with the smallest weight magnitudes. Generate and Test was developed and evaluated only on single-output regression problems. However, it has not been investigated in multi-output regression problems. Moreover, it is not clear that magnitude-based testers are appropriate for other outputs such as softmax. In this thesis, we investigate Generate and Test in these new cases and introduce testbeds for online representation learning in multi-output regression, classification, and reinforcement learning environments with discrete action spaces. We show that magnitude-based feature utility may give wrong estimates of the utility when softmax outputs are used, for example, in classification and discrete control tasks. We propose a new tester to extend the scope of the Generate and Test algorithm to these cases. We empirically show that this new tester can improve representations better than the magnitude-based tester. Thus, ours is the first work to make the Generate and Test algorithm applicable beyond supervised regression tasks.
Characterizing wave functions in graphene nanodevices: electronic transport through ultrashort graphene constrictions on a boron nitride substrate
Creators: name: Bischoff, Dominik
name: Libisch, Florian
name: Burgdörfer, Joachim
name: Ihn, Thomas
name: Ensslin, Klaus
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present electronic transport measurements through short and narrow (30x30 nm) single layer graphene constrictions on a hexagonal boron nitride substrate. While the general observation of Coulomb-blockade is compatible with earlier work, the details are not: we show that the area on which charge is localized can be significantly larger than the area of the constriction, suggesting that the localized states responsible for Coulomb-blockade leak out into the graphene bulk. The high bulk mobility of graphene on hexagonal boron nitride, however, seems not consistent with the short bulk localization length required to see Coulomb-blockade. To explain these findings, charge must instead be primarily localized along the imperfect edges of the devices and extend along the edge outside of the constriction. In order to better understand the mechanisms, we compare the experimental findings with tight-binding simulations of such constrictions with disordered edges. Finally we discuss previous experiments in the light of these new findings.
PhD Thesis LVP - Supplementary Files.zip
Creators: name: Van Poelvoorde, Laura
Publisher: name: figshare
Year: 2022
Subjects: subject: 60408 Genomics
subject: FOS: Biological sciences
subject: 111711 Health Information Systems (incl. Surveillance)
subject: FOS: Health sciences

description: In this zip file the supplementary files for the thesis of Laura Van Poelvoorde are included, which is named: "Exploring the added value of Next Generation Sequencing data in routine and pandemic viral surveillance"
Cellulose Nanocrystal Reinforcement of Nylon 6 Films and Fibres
Creators: Jankovic, Nicole C
Publisher: name: University of Alberta Library
Year: 2022

Cellulose Nanocrystals (CNC) are abundant, renewable, and highly crystalline by-products from the forestry industry. CNCs are known to have excellent thermal and mechanical properties which have been exploited in a variety of applications across numerous fields, such as drug delivery, photonics, and in films. With the focus of integrating CNC into functional materials, there have been a multitude of methods for the surface modification of CNC and for incorporation in polymer composites.

It is known that CNC can increase the mechanical strength of many polymers, however, Polyamides (including Nylon 6) have not yet been thoroughly investigated. This thesis describes the effects of CNC in Nylon 6 composites and the influence of CNC on the mechanical strength and characteristics of the polymer. Nanofibers were produced using solution electrospinning and freestanding thin films were produced using spin coating. Further, a comparison of the reinforcing impact of CNC in randomly distributed and aligned nanofibres, and the effect of each of the electrospinning processing parameters on fibre diameter and alignment is described. Furthermore, the influence of CNC on the crystallization of Nylon 6 in both thin films and electrospun fibres is also studied.

Further modification of CNC with diazonium salts and with an alkylamine group via diazonium-mediated surface functionalization was performed. Both the unmodified and modified CNC was incorporated into Nylon 6 solutions and spin coated into freestanding thin films. The modification of CNC with hydrophobic aryl and alkyl groups using diazonium chemistry provides a quick and facile route towards increased interactions with hydrophobic polymers.

Due to the wide range of applications that CNC has in functional materials, it is crucial to understand the factors attributed to changes in the mechanical strength of CNC-polymer composites, and to develop methods that effectively yield and control high quality nanocomposites. By detailing the effects of CNC in polymer composites, recommendations can be established for industry to use as guidelines when using CNC in Polyamides. The large reinforcing impact of a bio-renewable resource at low loadings is an exciting route for stronger materials and a stepping-stone towards more sustainable products.
Aspects of Nonlocality in Quantum Field Theory, Quantum Gravity and Cosmology
Creators: name: Barvinsky, A. O.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This paper contains a collection of essays on nonlocal phenomena in quantum field theory, gravity and cosmology. Mechanisms of nonlocal contributions to the quantum effective action are discussed within the covariant perturbation expansion in field strengths and spacetime curvatures and the nonperturbative method based on the late time asymptotics of the heat kernel. Euclidean version of the Schwinger-Keldysh technique for quantum expectation values is presented as a special rule of obtaining the nonlocal effective equations of motion for the mean quantum field from the Euclidean effective action. This rule is applied to a new model of ghost free nonlocal cosmology which can generate the de Sitter stage of cosmological evolution at an arbitrary value of $\varLambda$ -- a model of dark energy with its scale played by the dynamical variable that can be fixed by a kind of a scaling symmetry breaking mechanism. This model is shown to interpolate between the superhorizon phase of gravity theory mediated by a scalar mode and the short distance general relativistic limit in a special frame which is related by a nonlocal conformal transformation to the original metric. The role of compactness and regularity of spacetime in the Euclidean version of the Schwinger-Keldysh technique is discussed.
description: 30 pages, 1 figure, extended version of the paper to appear in Modern Physics Letters A, contains discussion of the effective action generated by late time heat kernel asymptotics and the discussion of regularity on compact Euclidean spacetimes with conical singularities
Mapping QTL associated with partial resistance to Aphanomyces and Fusarium root rot in field pea and evaluation of Aphanomyces euteiches resistance by bulked segregant RNA-seq
Creators: Longfei, Wu
Publisher: name: University of Alberta Library
Year: 2022

Root rot, caused by Aphanomyces euteiches and Fusarium spp., is an important disease of field pea (Pisum sativum) that can be managed with polygenic resistance. An F8 recombinant inbred line (RIL) population derived from the cross ‘Reward’ × ‘00-2067’ was evaluated for reaction to A. euteiches under field and greenhouse conditions. Genotyping was conducted with a 13.2K single nucleotide polymorphism (SNP) array and 222 simple sequence repeat markers. Significant genotypic effects and G×E interactions were detected in all experiments. Mapping of quantitative trait loci (QTL) identified 8 major-effect (R 2 >20%), 13 moderate-effect (10%<R2<20%) and 6 minor-effect (R2<10%) QTL. A genomic region on chromosome 4 was most consistently responsible for partial resistance to A. euteiches. To evaluate resistance to Fusarium spp., the cultivars ‘Reward’ and ‘00-02067’ were screened with Fusarium solani, F. avenaceum, F. acuminatum, F. proliferatum and F. graminearum under greenhouse conditions. Significant differences in root rot severity were found between the cultivars in response to F. avenaceum and F. graminearum, and these species were tested against the F8 RIL population. While no significant QTL were detected following inoculation with F. avenaceum, 5 QTL for root rot severity and 3 QTL each for vigor and plant height were identified for F. graminearum. The two most stable QTL for partial resistance to F. graminearum were located chromosome 4, coinciding with the region associated with partial resistance to A. euteiches. This region may be important for root rot resistance breeding and marker development. Resistance to A. euteiches was evaluated further with another RIL population derived from the cross ‘Carman’ × ‘00-2067’. Strongly resistant (R) and susceptible (S) individuals were used to construct R and S bulks, respectively, for bulked segregant RNA-seq (BSR-seq) analysis. Approximately 4.3-5.1 GB read pairs were aligned to the pea reference genome and 44,757 genes examined for expression level, 2,356 of which were differentially expressed. In total, 344.1 K SNPs were detected between the R and S bulks, with 395 variants located in 31 candidate genes. The identification of novel genes associated with partial resistance to A. euteiches may facilitate efforts to improve management of this pathogen.
Hausinterne Forschungsprojekte in Bibliotheken mit Fokus auf Citizen Science
Creators: name: Freyberg, Linda
name: Rumler, Jana
Publisher: name: Zenodo
Year: 2022
Subjects: Open Access
Citizen Science
Bibliotheken
Urheberrecht
Datenschutz
Versicherungsschutz

description: Zunehmend bemühen sich auch kleinere wissenschaftliche Spezialbibliotheken mit eigenen Forschungsprojekten ihre Kompetenzen im Wissenschaftsbetrieb einzubringen und als kompetente Partnerinnen verstanden zu werden. Welche Ressourcen sind hierfür notwendig, welche Stakeholder müssen adressiert werden und wie können Bibliotheken auf diesem Weg die Open Access-Transformation unterstützen? Diesen Fragen geht ein befristetes hausinternes Projekt am Museum für Naturkunde (MfN) nach, dass sich mit rechtlichen Fragestellungen in Citizen Science-Projekten sowie dem übergeordneten Kontext von Citizen Science zu Open Science befasst. Hierfür kooperieren eine Wissenschaftlerin aus dem Forschungsbereich Citizen Science (Dr. Linda Freyberg) und eine Mitarbeiterin der Koordinierungsstelle Wissenschaftliches Publizieren in der Bibliothek (Jana Rumler) des MfN miteinander. Open Access-Themen wie freie Zugänglichkeit und Sichtbarkeit sowie langfristige Sicherung von Forschungsoutput aus Citizen Science-Projekten werden in Verbindung zu möglichen Beratungsleistungen von Bibliotheken gebracht. Ziel des Austausches mit den Referentinnen ist es, in Erfahrung zu bringen welche Synergien und Herausforderungen sich aus solchen Projekten ergeben können und einen Überblick über ähnliche Aktivitäten anderer Bibliotheken zu gewinnen. Smaller specialized academic libraries are also making increasing efforts to contribute their expertise to the academic community through their own research projects and to be seen as competent partners. What resources are needed for this, which stakeholders must be addressed, and how can libraries support the open access transformation in this way? These questions are being addressed by a temporary in-house project at the Museum für Naturkunde (MfN) that deals with legal issues in Citizen Science projects as well as the overarching context of Citizen Science to Open Science. For this purpose, a scientist from the Citizen Science research area (Dr. Linda Freyberg) and a staff member of the Coordination Office for Scientific Publishing in the library (Jana Rumler) of the MfN cooperate with each other. Open access issues such as free accessibility and visibility as well as long-term safeguarding of research output from Citizen Science projects will be related to possible consulting services provided by libraries. The aim of the exchange with the speakers is to find out which synergies and challenges can result from such projects and to gain an overview of similar activities of other libraries.