cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cosmic Ray transport in mixed magnetic fields and their role on the observed anisotropies
Creators: name: Axen, Margot Fitz
name: Speicher, Julia
name: Hungerford, Aimee
name: Fryer, Chris L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: There is a growing set of observational data demonstrating that cosmic rays exhibit small-scale anisotropies (5-30 deg) with amplitude deviations lying between 0.01-0.1 percent that of the average cosmic ray flux. A broad range of models have been proposed to explain these anisotropies ranging from finite-scale magnetic field structures to dark matter annihilation. The standard diffusion transport methods used in cosmic ray propagation do not capture the transport physics in a medium with finite-scale or coherent magnetic field structures. Here, we present a Monte Carlo transport method, applying it to a series of finite-scale magnetic field structures to determine the requirements of such fields in explaining the observed cosmic ray,small-scale anisotropies.
description: 14 pages, 13 figures
Braids with the symmetries of Platonic polyhedra in the Coulomb (N+1)-body problem
Creators: name: Fenucci, Marco
name: Jorba, Àngel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We take into account the Coulomb (N + 1)-body problem with N = 12, 24, 60. One of the particles has positive charge Q > 0, and the remaining N have all the same negative charge q < 0. These particles move under the Coulomb force, and the positive charge is assumed to be at rest at the center of mass. Imposing a symmetry constraint, given by the symmetry group of the Platonic polyhedra, we were able to compute periodic orbits, using a shooting method and continuation with respect to the value Q of the positive charge. In the setting of the classical N -body problem, the existence of such orbits is proved with Calculus of Variation techniques, by minimizing the action functional. Here this approach does not seem to work, and numerical computations show that the orbits we compute are not minimizers of the action.
Agricultural landscape management in the tradition of Osing tribe in Banyuwangi, East Java, Indonesia | JBES 2021
Creators: name: Prasetyo, Budi
Publisher: name: figshare
Year: 2021
Subjects: Environmental Science

description: In managing agriculture, Osing tribe has unique patterns when it deals with spatial structuring environment as an adaptation strategy to survive. The uniqueness shows in their culture when they manage and make use of the natural resources and its environment. The research aims to examine the method in managing agricultural landscapes in Osing tribe. The research used qualitative and quantitave methods. The qualitative method used emic approach and the quantitative method used calculation of density value and species distribution to obtain the Importance Value Index (IVI). The result of the study showed that in their agricultural system known as four landscape units (yard, paddy field, garden, and field) and used different ways of management. The study of plant community structure in each landscape unit of three villages reflected the existing dominant species and every landscape unit had different structure, composition and vertical stratification. The calculation result of economic valuation of agricultural landscape resources used direct use values and market values towards seven plant species i.e. paddy (Oryza sativa), coconut (Cocos nucifera), banana (Musa sp.), durian (Durio zibethinus), mangosteen (Garcinia mangostana), bitter bean (Parkia speciosa), and avocado (Persea americana) is IDR 36,850,000/head of household/year or IDR 3,070,833/head of household/year. The amount had contribution towards the fulfillment of subsistence needs of Osing tribe.
Exploring the melting behaviour of the Earth's heterogeneous upper mantle
Creators: name: Rosenthal, Anja
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: QE509.4.R67 2009
subject: Melting points
subject: Earth (Planet) Mantle

description: The existence, creation and modification of compositional heterogeneities within the Earth's upper mantle and their influences on the petrogenesis of primitive magmas have been highly debated for decades. The possible origins of mantle heterogeneities within the Earth's peridotite-dominated mantle are numerous and complex. One major mechanism invokes an important role for recycling of oceanic crust at subduction zones, and the storage of these recycled mafic (and sedimentary) materials in the deep mantle, before it is thought to be incorporated in the adiabatically upwelling upper mantle sources of some primitive mantle-derived magmas. This data is then combined with the results of earlier experimental investigations to constrain the complex melting behaviours of (residual) eclogite bodies in upwelling mantle, the nature of the interactions of their partial melts with ambient peridotitic mantle, and the nature of re-melting of such metasomatised mantle assemblages, and a brief evaluation of the contributions of these processes to the genesis of some primitive mantle-derived magmas. This study highlights that mantle heterogeneites caused by upwelling of subducted oceanic crust and its residues 'breed' an infinite number of various heterogeneities, ranging from Si02-oversaturated to Si02-undersaturated. To assess the influence of recycled oceanic crust on the creation of mantle heterogeneities and on the petrogenesis of primitive magmas in homogeneous, buoyant, upwelling peridotite-dominated mantle, high pressure experimental investigations of the melting behaviour of subducted oceanic crust and its residues will be presented. I track a sequential process in which melts are redistributed from the (initially) low temperature melting of average oceanic crust (Spandler et al., 2008), and then from the residues (nominally anhydrous eclogitic compositions) of such subducted oceanic crust (Res2 and REC, this study). This study establishes the phase and melting relations and compositions of reasonable melting residues, which are themselves derived directly from subducted oceanic crust at high pressures and temperatures (GA2; Spandler et al., 2008). In particular, this study has systematically determined the solidus temperatures, phase relations, and partial melt compositions xv during upwelling of both, a residual quartz/coesite-bearing eclogite (Res2) and a residual quartz/coesite-free eclogite (REC) from 5 to 3 GPa and 1500-1200{u00B0}C.
Connecting Leptogenesis to CP Violation in Neutrino Mixings in a Tri-bimaximal Mixing model
Creators: name: Mohapatra, R. N.
name: Yu, Hai-Bo
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that in a recently proposed $S_3$ model for tri-bimaximal mixing pattern for neutrinos, CP violating phases in neutrino mixings are directly responsible for lepton asymmetry $ε_\ell$. In the exact tri-bimaximal limit, $ε_\ell$ is proportional to one of the Majorana phases whereas in the presence of small deviations from tri-bimaximal pattern, there are two contributions, one being proportional to the Dirac phase and the other to one of the two Majorana phases. In the second case, $θ_{13}$ is nonzero and correlated with the deviation from maximal atmospheric mixing.
description: 14 pages; no figures; references updated
Applying Trustworthy Computing to End-To-End Electronic Voting
Creators: name: Fink, Russell A.
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Cryptography
Elections
End-to-End
Trusted Computing
Trusted Platform Modules
Voting

description: End-to-End (E2E) voting systems provide cryptographic proof that the voter's intention is captured, cast, and tallied correctly. While E2E systems guarantee integrity independent of software, most E2E systems rely on software to provide confidentiality, availability, authentication, and access control; thus, end-to-end integrity is not end-to-end security. Trustworthy Computing (TC) improves the security of software systems significantly.  The Trusted Platform Module (TPM) protects secrets and enforces security policy in a self- contained cryptographic co-processor. Systems use TPMs to allocate security requirements not to untrustworthy software, but to tamper-resistant hardware, enabling applications such as digital rights management and secure computing platforms. Our research found that adding TC to voting systems is possible, practical, and enhances privacy even in E2E systems by managing election secrets inside trustworthy hardware. We produced 4 major results: -- Analysis of how TC can benefit E2E -- Design that adds TPMs to Direct Recording Electronic (DRE) voting systems, binding ballots and votes, with software state, and enforcing election day policy -- Design that enables voters to verify voting platform system integrity using common and inexpensive programmable smart cards -- Two designs that add trustworthy receipt printers to the Scantegrity E2E voting system adding usability, security, and enabling alternative voter interfaces
Kinship Networks and Social Support in the Authoritarian Parenting Style and Children's Maladaptive Social Behaviors of Chinese Immigrants
Creators: name: Leung, Christy Y. Y.
Publisher: name: Maryland Shared Open Access Repository
Year: 2009

description: The goal of the present study was to investigate the role of the social context in the parenting style of immigrant Chinese mothers and the maladaptive social behaviors in their preschool children.  Participants included 78 first-generation immigrant Chinese mothers with preschool children residing in small co-ethnic communities in Maryland.  Although no significant associations were found between the variables of interest, follow-up analyses revealed that spousal support for the parenting role uniquely predicted less verbal hostility, whereas kin support for the parenting role uniquely predicted less physical coercion.  Non-kin support for the parenting role did not predict parenting style.  The findings demonstrated the distinct function of support for the parenting role as opposed to the general support network and the significance of kin for the negative parenting behaviors of immigrant Chinese mothers.  Findings can inform community agencies about the significance of spousal and kinship support for immigrant Chinese families.
Synthesis, Structural, and Electronic Properties of K 4 Pu VI O 2(CO 3) 3(cr): An Environmentally Relevant Plutonium Carbonate Complex
Creators: name: Pidchenko, Ivan
name: März, Juliane
name: Hunault, Myrtille O J Y
name: Bauters, Stephen
name: Butorin, Sergei M
name: Kvashnina, Kristina O
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The chemical properties of actinide materials are often predefined and described based on the data available for isostructural species. This is the case for potassium plutonyl (PuVI) carbonate, K4PuVIO2(CO3)3(cr), a complex relevant for nuclear technology and the environment, of which the crystallographic and thermodynamic properties of which are still lacking. We report here the synthesis and characterization of PuVI achieved by single-crystal X-ray diffraction analysis and high-energy-resolution fluorescence-detected X-ray absorption near-edge structure at the Pu M4-edge coupled with electronic structure calculations. The crystallographic properties of PuVI are compared with isostructural uranium (U) and neptunium (Np) compounds. Actinyl (AnVI) axial bond lengths, [O-AnVI-O]2+, are correlated between solid, K4AnVIO2(CO3)3(cr), and aqueous, [AnVIO2(CO3)3]4-(aq) species for the UVI-NpVI-PuVI series. The spectroscopic data are compared to KPuVO2CO3(cr) and PuIVO2(cr) to tackle the trend in the electronic structure of PuVI regarding the oxidation state changes and local structural modifications around the Pu atom
description: Inorganic Chemistry (2020)
An exploratory study of dislocation relaxation in polycrystalline olivine
Creators: name: Farla, Robert Jacobus Maria
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: QE391.O45 F37 2010
subject: Olivine
subject: Rock deformation
subject: Rocks Creep

description: "Motivated by theoretical considerations of damped vibrations of dislocations and the need to better constrain global attenuation models, a laboratory study was undertaken of the attenuation of seismic waves and associated shear modulus dispersion in upper mantle olivine, (Mg{u2080}.{u2089},Fe{u2080}.{u2081}){u2082}SiO{u2084}. Polycrystalline olivine specimens were synthesised from laboratory (solution-gelation) and natural (San Carlos) precursors, hot-pressed and pre-deformed in the laboratory under high temperature.. and pressure (300 MPa). Compressive deformation experiments were performed for differential stresses up to 290 MPa and 22 % stsrain in the dislocation creep regime of olivine..... The observed relationship between dislocation-related dissipation and the orientation of the stress field during prior deformation suggests the possibility of seismological attenuation anisotropy. If dislocation damping is not grain size sensitive, then its operation in coarser-grained upper mantle olivine may contribute signigicantly to attenuation (Q{u207B}{u00B9} ~ 10{u207B}{u00B2}), especially in regions with relatively high levels of prevailing tectonic stress."--P. ix.
Cochrane review Supplementary material 7 Analyses
Creators: name: Clephas, P.R.D.
name: Orbach-Zinger, S.
name: Gosteli-Peter, M.A.
name: Hoshen, M.
name: Halpern, S.
name: Hilber, ND
name: Leo, C.
name: Heesen, M.
Publisher: name: Zenodo
Year: 2025

description: Supplementary material 7 Analyses for Cochrane review titled Regional analgesia with or without general anaesthesia for postoperative pain after breast cancer surgery: a network meta-analysis

Clephas PRD, Orbach-Zinger S, Gosteli-Peter MA, Hoshen M, Halpern S, Hilber ND., Leo C, Heesen M. Regional analgesia with or without general anaesthesia for postoperative pain after breast cancer surgery: a network meta-analysis. Cochrane Database of Systematic Reviews TBD, Issue TBD. Art. No.CD014818. DOI: 10.1002/14651858.CD014818.
Pedagogy of the imagination
Creators: name: Frein, Mark
Publisher: name: University of British Columbia
Year: 2009

description: The imagination is a concept in educational thought that has proven time-tested like few other educational ideas. What attracts so many educators to the imagination continues to be its associations with individuality, creativity, empathy, and social transformation. These associations are the direct legacy of the Romantic revolution in aesthetics, philosophy, and religion. It is difficult, if not impossible, to separate this Romantic legacy from current use of the imagination in educational thought. There is, however, a deep tension in the use of the imagination in education discourse — the imagination, for Romantic poets such as Wordsworth, Coleridge, Shelley, and Blake was strongly positioned against pre-Romantic understandings of mind, morality, and poetry. Thinkers seeking to bring the Romantic imagination into theories of schooling have wrestled with these Romantic associations with varying degrees of success. While many educators still believe that imagination is generally a good thing and ought to be a focus of educational effort, the purpose of such effort is no longer as clear as it was for the Romantics. Why should we educate for imagination? How should children "use" their imaginations and for what ends? These are questions that are often addressed in passing in educational discourse or assumed to need no answer at all. What needs to be reconstructed, I believe, is a sense of what is at stake in the education of what we have called the "imagination".
A Curious New Milky Way Satellite in Ursa Major
Creators: name: Zucker, D. B.
name: Belokurov, V.
name: Evans, N. W.
name: Kleyna, J. T.
name: Irwin, M. J.
name: Wilkinson, M. I.
name: Fellhauer, M.
name: Bramich, D. M.
name: Gilmore, G.
name: Newberg, H. J.
name: Yanny, B.
name: Smith, J. A.
name: Hewett, P. C.
name: Bell, E. F.
name: Rix, H. -W.
name: Gnedin, O. Y.
name: Vidrih, S.
name: Wyse, R. F. G.
name: Willman, B.
name: Grebel, E. K.
name: Schneider, D. P.
name: Beers, T. C.
name: Kniazev, A. Y.
name: Barentine, J. C.
name: Brewington, H.
name: Brinkmann, J.
name: Harvanek, M.
name: Kleinman, S. J.
name: Krzesinski, J.
name: Long, D.
name: Nitta, A.
name: Snedden, S. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this Letter, we study a localized stellar overdensity in the constellation of Ursa Major, first identified in Sloan Digital Sky Survey (SDSS) data and subsequently followed up with Subaru imaging. Its color-magnitude diagram (CMD) shows a well-defined sub-giant branch, main sequence and turn-off, from which we estimate a distance of ~30 kpc and a projected size of ~250 x 125 pc. The CMD suggests a composite population with some range in metallicity and/or age. Based on its extent and stellar population, we argue that this is a previously unknown satellite galaxy of the Milky Way, hereby named Ursa Major II (UMa II) after its constellation. Using SDSS data, we find an absolute magnitude of M_V \~ -3.8, which would make it the faintest known satellite galaxy. UMa II's isophotes are irregular and distorted with evidence for multiple concentrations; this suggests that the satellite is in the process of disruption.
description: 4 pages, 4 figures, submitted to ApJ Letters
Applying Data Visualization Techniques to Support the Analysis of Digital Forensic Data--Dissertation and Supplements
Creators: name: Leschke, Timothy
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: Computer Forensics
Data Analysis
Data Browsing
Data Visualization
Digital Forensics
Linked Views

description: The Modern Age of digital forensics is characterized by a proliferation of artifacts, increased data complexity, larger and cheaper data storage, and the emergence of the need for tools that support timeline analysis, anomaly detection, and triage. Traditional text-based digital forensic tools can no longer keep pace with the demands of the modern digital forensic examiner. A new approach for developing digital forensic tools is required if digital forensics is going to avoid becoming stagnant. We apply the power of data visualization to support the needs of the modern digital forensic examiner. We design and develop a tool called Change-Link; a coordinated and multiple view tool which uses semantic zooming in the form of an overview, treeview, directory content view, and a metadata view to provide an understanding of digital forensic data that changes over time. By using this tool to examine a mock evidence hard drive containing shadow volume data provided by the Microsoft Volume Shadow Copy Service, we demonstrate a way to reduce data complexity and provide better forensic data analysis while supporting timeline analysis, anomaly detection, and a triage of the dataset. We demonstrate a proof for our broader hypothesis which is data visualization techniques can be developed to support better analysis of digital forensic data.
Letter from Okanagan Valley Land Company to "Sir" at Rainbow Ranche, August 19, 1909
Creators: name: Okanagan Valley Land Company
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to "Sir" at Rainbow Ranche from Okanagan Valley Land Company, dated August 19, 1909, regarding issues with supplying water to Rainbow Ranche and a new irrigation agreement.
How to choose which explanation to use with students? Discussing the tensiometer with beginning teachers
Creators: name: Viennot, Laurence
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Among the many decisions to be made in their teaching practice, physics teachers must decide how to explain each particular phenomenon to students. This study explores student teachers' (STs) decision-making process when presented with several explanations of a physical phenomenon that might be used for teaching purposes. During individual interviews, seven STs were offered three different explanations of how a tensiometer works, all with an accurate conclusion. They were also supplied with a grid of criteria for critical analysis. Following in-depth critical analysis of the three explanations in close interaction with the interviewer, each ST was asked to specify the criteria for their choice of explanation, for themselves and for university students. Even after stressing that they valued consistency, some teachers opted for an explanation for students that they had just described as inconsistent and/or incomplete. More specifically, their comments revealed conflicting ideas about the need for consistency and the various forms of simplicity or incompleteness in a given explanation. The results invite more explicit consideration of the complex roles of simplicity or incompleteness in explanations and the importance of this type of interaction during teacher preparation.
description: International Journal of Science Education, Taylor & Francis (Routledge), In press
Universal Scotogenic Fermion Masses in Left-Right Gauge Model
Creators: name: Ma, Ernest
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the conventional left-right gauge model, if the Higgs scalar sector consists only of an $SU(2)_L$ doublet and an $SU(2)_R$ doublet, fermion masses are zero at tree level. There have been many studies on how they would become massive. With the help of a dark sector with $U(1)_D$ gauge symmetry, it is shown how all standard-model fermions may acquire realistic masses radiatively, including that of the top quark. In this context, the particle content of the model also implies the automatic conservation of baryon number $B$ and lepton number $L$ as in the standard model. Observable anomalous Higgs couplings are predicted.
description: 11 pages, 3 figures, abstract expanded, reference added
Adaptation of Wireless Sensor Networks Through Node Relocation
Creators: name: Labin, Jonathan William
Publisher: name: Maryland Shared Open Access Repository
Year: 2007
Subjects: Computer Science (0984)
wireless sensor networks
mobile wireless actor networks

description: Wireless sensor networks are a popular tool for tasks that require remote monitoring of an environment. However, sensor networks are often deployed with resource imbalances that cause inefficiencies in the operation of such networks. A common resource imbalance is the distribution of battery power among the sensor nodes. This imbalance is often caused by faster energy depletion of sensor nodes near a sink node than in the remainder of the network. Modern multi-hop message passing methods tend to select a node that is located close to the sink as the last hop in the path for many different sensors, reducing its lifetime considerably. To address this problem, I propose the Bid and Rescue algorithm. Under the Bid and Rescue algorithm, sensor nodes assess the message forwarding load they experience and estimate the lifetime that their battery power will allow under such a load. If this estimated lifetime indicates that the node endangers the network by prematurely depleting energy reserves, a bidding session is carried out to rebalance the energy distribution in the network through node relocation.
A complete one-loop calculation of electroweak supersymmetric effects in $t$-channel single top production at LHC
Creators: name: Beccaria, M.
name: Calame, C. M. Carloni
name: Macorini, G.
name: Mirabella, E.
name: Piccinini, F.
name: Renard, F. M.
name: Verzegnassi, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have computed the complete one-loop electroweak effects in the MSSM for single top (and single antitop) production in the $t$-channel at hadron colliders, generalizing a previous analysis performed for the dominant $dt$ final state and fully including QED effects. The results are quite similar for all processes. The overall Standard Model one-loop effect is small, of the few percent size. This is due to a compensation of weak and QED contributions that are of opposite sign. The genuine SUSY contribution is generally quite modest in the mSUGRA scenario. The experimental observables would therefore only practically depend, in this framework, on the CKM $Wtb$ coupling.
description: 25 pages, several eps figures. Update corresponding to published version
Job Strain and Diabetes Risk
Creators: name: Williams, Neena
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Diabetes
Diabetes Risk
Job Strain
Occupation

description: Diabetes is quickly becoming an epidemic in the United States.  Several risk factors that contribute to the development of diabetes have been established but environmental influences are often overlooked.  This study explored the relation between work environments on diabetes risk. The job strain model (high physical demands and low job control), was designed to provide a parsimonious framework for explaining the relation between work environment and health. Objective characteristics of occupation rather than measures of perceived demands and control were examined. Several multivariate cross sectional analyses were performed to asses if job strain increases likelihood of established risk factors for diabetes (exercise, BMI, alcohol use, blood pressure, and smoking) and if job strain is an independent risk factor for diabetes. No relation was found between job strain and diabetes and its risk factors. Several reasons for the occurrence of these results are explored along with suggestions for future research.
Analyzing Trajectory Populations Through Clustering and Visualization
Creators: name: Trimm, David A.
Publisher: name: Maryland Shared Open Access Repository
Year: 2012
Subjects: Clustering
Intelligent Agents
Student Performance Analysis
Trajectory Sets
Visualization

description: Analyzing large trajectory sets enables deeper insights into multiple real-world problems.  For example, animal migration data, multi-agent analysis, and virtual entertainment can all benefit from deriving conclusions from large sets of trajectory data.  However, the analysis is complicated by several factors when using traditional analytic techniques.  For example, directly visualizing the trajectory set results in a multitude of lines that cannot be easily understood.  Statistical analysis methods and non-direct visualization techniques (e.g., parallel coordinates) produce conclusions that are non-intuitive and difficult to understand.  By using two complementary processes---clustering and visualization---a new approach is developed to analyzing large trajectory sets.  First, clustering techniques are developed and refined to group related trajectories together.  From these similar sets, a trajectory composition visualization is created and implemented that clearly depicts the cluster characteristics including application-specific attributes.  The effectiveness of the approach is demonstrated on two separate and distinct types of data sets resulting in actionable conclusions.  The first application, multi-agent analysis, represents a rich, spatial data set.  When analyzed using this approach, deficiencies in the underlying artificial intelligence algorithms can be determined leading to improved agent performance.  Student course-grade history analysis, the second application, requires adapting the approach for a non-spatial data set.  However, the results enable a clear understanding of which courses are most critical in a student's career and which student groups require assistance to succeed.  This research contributes to methods for trajectory clustering, techniques for large-scale visualization of trajectory data, and processes for analyzing student data.
Consultant background and elicitation on nominal possession
Creators: name: Chilel Ramírez, Ovilia Marina
name: Scott, Tessa
name: Sales, Henry
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a one hour remote video interview held using Zoom. Henry Sales, a Mam speaker from San Juan Atitán, provides translation between English and Mam using Mam and Spanish. For the majority of the interview, Tessa asks consultant questions about language background and upbringing, and explains the idea of an archive and the methods for future interviews. Near minute 23:00 is an elicitation on nominal possession of several nouns. In this file bundle: 1 Zoom video/audio recording, 1 Zoom chat file, 1 pdf of typed notes and 1 .csv file with language background information.
Optical spectroscopic observations of low-energy counterparts of Fermi-LAT gamma-ray sources
Creators: name: Peña-Herazo, H. A.
name: Amaya-Almazán, R. A.
name: Massaro, F.
name: de Menezes, R.
name: Marchesini, E. J.
name: Chavushyan, V.
name: Paggi, A.
name: Landoni, M.
name: Ricci, F.
name: Masetti, N.
name: D'Abrusco, R.
name: Cheung, C. C.
name: La Franca, F.
name: Smith, H. A.
name: Milisavljevic, D.
name: Jiménez-Bailón, E.
name: Patiño-Álvarez, V. M.
name: Tosti, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A significant fraction of all $γ$-ray sources detected by the Large Area Telescope aboard the \fer\ satellite is still lacking a low-energy counterpart. In addition, there is still a large population of $γ$-ray sources with associated low-energy counterparts that lack firm classifications. In the last 10 years we have undertaken an optical spectroscopic campaign to address the problem of unassociated/unidentified $γ$-ray sources (UGSs), mainly devoted to observing blazars and blazar candidates because they are the largest population of $γ$-ray sources associated to date. Here we describe the overall impact of our optical spectroscopic campaign on sources associated in \fer-LAT catalogs, coupled with objects found in the literature. In the literature search, we kept track of efforts by different teams that presented optical spectra of counterparts or potential counterparts of \fer-LAT catalog sources. Our summary includes an analysis of an additional 30 newly-collected optical spectra of counterparts or potential counterparts of \fer-LAT sources of previously unknown nature.New spectra were acquired at the Blanco 4-m and OAN-SPM 2.1-m telescopes, and those available in the Sloan Digital Sky Survey (data release 15) archive. All new sources with optical spectra analyzed here are classified as blazars. Thanks to our campaign, we altogether discovered and classified 394 targets with an additional 123 objects collected from a literature search. We began our optical spectroscopic campaign between the release of the second and third \fer-LAT source catalogs (2FGL and 3FGL, respectively), and classified about 25\% of the sources with uncertain nature and discovered a blazar-like potential counterpart for $\sim$10\% of UGSs listed therein. In the 4FGL catalog, about 350 \fer-LAT sources are classified to date thanks to our campaign. [incomplete abstract]
description: 31 pages, 12 tables, 32 figures, 2 appendices, accepted for publication on A&A (pre-proofs version)
Involvement Beliefs and Behaviors of Parents Enrolled in a Community-Based Educational Program
Creators: name: Finger-Elam, Maria Yasmeen
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: Barriers
Black Parents
Educator Practices
Family Engagement
Motivating Factors
Parent Involvement

description: The educational involvement practices of many Black parents are often overlooked by researchers and practitioners. In addition, the factors that lead to increased involvement among Black parents may be different than those of their non-Black peers. Thus, the goal of the two interrelated studies was to explore factors impacting educational involvement beliefs and behaviors among a population of primarily Black parents. Study 1, a quantitative study that extended the work on the Hoover-Dempsey and Sandler (2005) model of parent involvement, examined the extent to which contextual factors (parent time and energy and parent knowledge) moderate the relation between motivational (parental role construction and self-efficacy) and school-based (parental perception of school outreach) factors and involvement at school and home. The study was also designed to determine if the constructs of the model remained predictive among a racially homogeneous sample. Study 2 was a qualitative exploration of factors that influenced parent involvement behaviors among a sample of parents enrolled in a community-based educational program for the first time. In Study 1, data from 88 parents from a Maryland school district were analyzed to estimate hypothesized Hoover-Dempsey and Sandler model relations. In Study 2, data from 12 parents and program staff were analyzed using frameworks grounded in the work of Hoover-Dempsey and Sandler and Epstein (2009) to identify parent involvement themes present in their experiences. Consistent with expectations, knowledge moderated the relation between self-efficacy and home involvement and time and energy moderated the relation between school outreach and school involvement. Although the full Hoover-Dempsey and Sandler model predicted both home and school involvement, several novel relations were evidenced. Study 2 parents engaged in involvement activities often overlooked by educators such as communicating high expectations, making sacrifices to support their children, and teaching the value of education. These findings emphasize the importance of developing more inclusive, culturally-relevant conceptualizations of parent involvement than those currently employed by researchers and educators. The study also provides evidence that parental involvement efforts will be more successful if schools attend to three critical attributes: information provided to parents, educator knowledge, and educator attitudes.
Size Dependence of Lattice Parameter and Electronic Structure in CeO 2 Nanoparticles
Creators: name: Prieur, Damien
name: Bonani, Walter
name: Popa, Karin
name: Walter, Olaf
name: Kriegsman, Kyle W
name: Engelhard, Mark H
name: Guo, Xiaofeng
name: Eloirdi, Rachel
name: Gouder, Thomas
name: Beck, Aaron
name: Vitova, Tonya
name: Scheinost, Andreas C
name: Kvashnina, Kristina
name: Martin, Philippe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Intrinsic properties of a compound (e.g., electronic structure, crystallographic structure, optical and magnetic properties) define notably its chemical and physical behavior. In the case of nanomaterials, these fundamental properties depend on the occurrence of quantum mechanical size effects and on the considerable increase of the surface to bulk ratio. Here, we explore the size dependence of both crystal and electronic properties of CeO2 nanoparticles (NPs) with different sizes by state-of-the art spectroscopic techniques. X-ray diffraction, X-ray photoelectron spectroscopy, and high-energy resolution fluorescence-detection hard X-ray absorption near-edge structure (HERFD-XANES) spectroscopy demonstrate that the as-synthesized NPs crystallize in the fluorite structure and they are predominantly composed of CeIV ions. The strong dependence of the lattice parameter with the NPs size was attributed to the presence of adsorbed species at the NPs surface thanks to Fourier transform infrared spectroscopy and thermogravimetric analysis measurements. In addition, the size dependence of the t2g states in the Ce LIII XANES spectra was experimentally observed by HERFD-XANES and confirmed by theoretical calculations.
description: Inorganic Chemistry (2020)
Analysis on Hyperspectral Signature Coding
Creators: name: Chakracarty, Sumit
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Engineering, Electronics and Electrical (0544)

description: This dissertation addresses issues of hyperspectral signature coding. where three coding techniques from various applications, Arithmetic Coding (AC) in source coding, Texture Feature Coding Method (TFCM) in texture analysis and Block Truncation Coding (BTC) in image coding are investigated and further explored for hyperspectral signature characterization. Current coding-based approaches to spectral signature characterization include SPectral Analysis Manager (SPAM) developed by Mazer et al. and its extension Spectral Feature-based Binary Coding (SFBC) by Qian et al. where spectral signatures are encoded as code words and the spectral analysis is conducted by using Hamming distance as a spectral similarity measure. Unfortunately, due to the fact that the Hamming distance is a bit-wise (referred to as memoryless) measure, its performance is completely determined by spectral variation with individual bits without taking into account adjacent bits within a code word. Accordingly, one way to improve the performance of such bit memoryless spectral coding is to introduce bit-memory into its used distance measure. In order to address this issue two new coding techniques are developed, called Spectral Feature Probabilistic Coding (SFPC) which is based on the AC and Spectral Derivative Feature Coding (SDFC) which is based on TFCM. These two techniques extend memoryless signature coding to memory-signature coding and have shown to yield better performance than the current memoryless coding methods. Another alternative way to improve the performance of current memoryless coding schemes is called Block Truncation Signature Coding (BTSC) which is based on BTC and can process the signatures adaptively. This dissertation then culminates in a new approach, called Orthogonal Subspace Projection-based Band Signature for Signature Coding (OSP-BSSC) that can be used to perform signature dimensionality reduction for signature coding. It introduces a new concept, called Joint Dimensionality (JD) of a signature pair for discrimination and then further develops criteria and techniques to find a image of the JD for a signature to retain sufficient information for its discrimination from other signatures. Finally, extensive experiments are conducted to substantiate the techniques proposed in this dissertation for performance evaluation and analysis.
A Keck/DEIMOS Spectroscopy of Lyman Alpha Blobs at Redshift z=3.1
Creators: name: Matsuda, Yuichi
name: Yamada, Toru
name: Hayashino, Tomoki
name: Yamauchi, Ryosuke
name: Nakamura, Yuki
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of an intermediate resolution (~2 angstrom) spectroscopy of a sample of 37 candidate Lyman alpha blobs and emitters at redshift z=3.1 using the DEIMOS spectrograph on the 10 m Keck telescope. The emission lines are detected for all the 37 objects and have variety in their line profiles. The Lyman alpha velocity widths (FWHM) of the 28 objects with higher quality spectra, measured by fitting a single Gaussian profile, are in the range of 150 - 1700 km/s and correlate with the Lyman alpha spatial extents. All the 12 Lyman alpha blobs (>16 arcsec^2) have large velocity widths of > 500 km/s. While there are several possible physical interpretations of the Lyman alpha velocity widths (motion of gravitationally-bound gas clouds, inflows, merging of clumps, or outflows from superwinds), the large velocity widths of the Lyman alpha blobs suggest that they are the sites of massive galaxy formation. If we assume gravitationally-bound gas clouds, the dynamical masses of the Lyman alpha blobs are estimated to be ~10^12 - 10^13 Msun. Even for the case of outflows, the outflow velocities are likely to be the same order of the rotation velocities as inferred from the observational evidence for local starburst galaxies.
description: Accepted for publication in ApJL
On the non-axisymmetric fragmentation of rings generated by the Secular Gravitational Instability
Creators: name: Pierens, Arnaud
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Ringed structures have been observed in a variety of protoplanetary discs. Among the processes that might be able to generate such features, the Secular Gravitational Instability (SGI) is a possible candidate. It has also been proposed that the SGI might lead to the formation of planetesimals during the non-linear phase of the instability. In this context, we employ two-fluid hydrodynamical simulations with self-gravity to study the non-axisymmetric, non-linear evolution of ringed perturbations that grow under the action of the SGI. We find that the non-linear evolution outcome of the SGI depends mainly on the initial linear growth rate. For SGI growth rates smaller than typically $σ\gtrsim 10^{-4}-10^{-5}Ω$, dissipation resulting from dust feedback introduces a $m=1$ spiral wave in the gas, even for Toomre gas stability parameters $Q_g>2$ for which non-axisymmetric instabilities appear in a purely gaseous disc. This one-armed spiral subsequently traps dust particles until a dust-to-gas ratio $ε\sim 1$ is achieved. For higher linear growth rates, the dust ring is found to undergo gravitational collapse until the bump in the surface density profile becomes strong enough to trigger the formation of dusty vortices through the Rossby Wave Instability (RWI). Enhancements in dust density resulting from this process are found to scale with the linear growth rate, and can be such that the dust density is higher than the Roche density, leading to the formation of bound clumps. Fragmentation of axisymmetric rings produced by the SGI might therefore appear as a possible process for the formation of planetesimals.
description: accepted in MNRAS
EU Polar Cluster Flyer_August 2022
Creators: name: EU Polar Cluster
Publisher: name: Zenodo
Year: 2022
Subjects: EU Polar Cluster
Flyer
Horizon Results Booster

description: The EU Polar Cluster is a network of Horizon 2020 and a Framework Programme 7 funded polar projects. We have a range of Arctic, Antarctic and Southern Ocean, and Polar projects. Projects that have ended still provide input to the Cluster, and we include them here to support the legacy of these projects. The Cluster projects are also supported by key partners, who are involved in the Task Groups. One of our missions is to promote the European polar research community, especially the strength, excellence, integration and best practices of EU-funded polar research. This Flyer provides an overview about the EU Polar Cluster, its objectives, challenges and current members.
Nano Trees: Machine Learning Enhanced Signal Processing of Nanopore Data
Creators: name: Wadhwa, Deekshant
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2024
Subjects: Machine Learning
Decision Tree
Nanoscience
Nanopores
Signal Processing
Computer Science
Sublevel Fitting
Piecewise Constant Function

description: Solid-state nanopores are molecular-size holes in ultra-thin dielectric membranes used for single-molecule sensing. Nanopore sensors are operated by immersing them in a salt solution and applying an electric potential to drive the electrophoretic motion of ions and the capture of biomolecules. In a solid-state nanopore experiment, as a biomolecule passes through the nanopore, it produces fluctuations in the electrical current measured across the nanopore. These fluctuations can be used to determine various properties of the biomolecule and the nature of this translocation. As the complexity of these experiments increases, analysis of the resulting electrical signals to determine biomolecular details becomes a challenge. Piecewise constant function fitting is an important part of this analysis which is used to extract sublevel details from these signals. In an ideal world with perfect measuring devices, sublevel transitions would be instantaneous and perfectly captured without any noise in the signals. However, in practical scenarios, measurement imperfections and noise necessitate sophisticated fitting techniques to accurately interpret the sublevel transitions and deduce the underlying biomolecular properties. Current techniques for this task perform poorly when fitting this data prompting the development of more robust and efficient methods. In this thesis, I address this challenge through a novel Nano Trees algorithm for fitting piecewise constant functions. Nano Trees leverages machine learning algorithms to provide accurate fits to the noisy piecewise constant data characteristic of nanopore signals, producing accurate fits on events as short as twice the response time of the measurement system. I analyze the performance of our algorithm on several real and synthetic datasets. These results produced using Nano Trees underscore the generalizability and accuracy of this approach in the regime of fast molecular event fitting. Finally, I provide several approaches to understanding and fine-tuning various hyperparameters of Nano Trees. These include debugging procedures, flowcharts, isolated hyperparameter tuning instructions, default values for hyperparameters, and more. As the algorithm is novel and complex, I also discuss various automation and implementation strategies aimed at improving its practical applicability, usability, and overall effectiveness in real-world settings.
D0 QCD studies
Creators: name: Voutilainen, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A number of recent measurements from D0 that can be used to constrain parton distributions and tune QCD Monte Carlo models are presented. The selection includes W charge asymmetry, Z+jet event properties, dijet azimuthal decorrelations and the inclusive jet cross section.
description: 4 pages, 4 figures; proceedings of the DIS 2006 workshop
Prediction of High-Performance Computing Input/Output Variability and Its Application to Optimization for System Configurations
Creators: name: Xu, Li
name: Lux, Thomas
name: Chang, Tyler
name: Li, Bo
name: Hong, Yili
name: Watson, Layne
name: Butt, Ali
name: Yao, Danfeng
name: Cameron, Kirk
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Performance variability is an important measure for a reliable high performance computing (HPC) system. Performance variability is affected by complicated interactions between numerous factors, such as CPU frequency, the number of input/output (IO) threads, and the IO scheduler. In this paper, we focus on HPC IO variability. The prediction of HPC variability is a challenging problem in the engineering of HPC systems and there is little statistical work on this problem to date. Although there are many methods available in the computer experiment literature, the applicability of existing methods to HPC performance variability needs investigation, especially, when the objective is to predict performance variability both in interpolation and extrapolation settings. A data analytic framework is developed to model data collected from large-scale experiments. Various promising methods are used to build predictive models for the variability of HPC systems. We evaluate the performance of the methods by measuring prediction accuracy at previously unseen system configurations. We also discuss a methodology for optimizing system configurations that uses the estimated variability map. The findings from method comparisons and developed tool sets in this paper yield new insights into existing statistical methods and can be beneficial for the practice of HPC variability management. This paper has supplementary materials online.
description: 29 pages, 8 figures