cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
LittleYOLO-SPP: A Delicate Real-Time Vehicle Detection Algorithm
Creators: name: S, Sri Jamiya
name: P, Esther Rani
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Vehicle detection in real-time is a challenging and important task. The existing real-time vehicle detection lacks accuracy and speed. Real-time systems must detect and locate vehicles during criminal activities like theft of vehicle and road traffic violations with high accuracy. Detection of vehicles in complex scenes with occlusion is also extremely difficult. In this study, a lightweight model of deep neural network LittleYOLO-SPP based on the YOLOv3-tiny network is proposed to detect vehicles effectively in real-time. The YOLOv3-tiny object detection network is improved by modifying its feature extraction network to increase the speed and accuracy of vehicle detection. The proposed network incorporated Spatial pyramid pooling into the network, which consists of different scales of pooling layers for concatenation of features to enhance network learning capability. The Mean square error (MSE) and Generalized IoU (GIoU) loss function for bounding box regression is used to increase the performance of the network. The network training includes vehicle-based classes from PASCAL VOC 2007,2012 and MS COCO 2014 datasets such as car, bus, and truck. LittleYOLO-SPP network detects the vehicle in real-time with high accuracy regardless of video frame and weather conditions. The improved network achieves a higher mAP of 77.44% on PASCAL VOC and 52.95% mAP on MS COCO datasets.
description: 18 pages, 8 Figures, 7 Tables
A Seesaw Mechanism in the Higgs Sector
Creators: name: Calmet, Xavier
name: Oliver, Josep F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this letter we revisit the seesaw Higgs mechanism. We show how a seesaw mechanism in a two Higgs doublets model can trigger the electroweak symmetry breaking if at least one of the eigenvalues of the squared mass matrix is negative. We then consider two special cases of interest. In the decoupling scenario, there is only one scalar degree of freedom in the low energy regime. In the degenerate scenario, all five degrees of freedom are in the low energy regime and will lead to observables effects at the LHC. Furthermore, in that scenario, it is possible to impose a discrete symmetry between the doublets that makes the extra neutral degrees of freedom stable. These are thus viable dark matter candidates. We find an interesting relation between the electroweak symmetry breaking mechanism and dark matter.
description: 10 pages
A note on rank two stable bundles over surfaces
Creators: name: Reyes-Ahumada, Graciela
name: Roa-Leguizamón, L.
name: Torres-López, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J60 14H60

description: Let $π: X \longrightarrow C$ be a fibration with reduced fibers over a curve $C$ and consider a polarization $H$ on the surface $X$. Let $E$ be a stable vector bundle of rank $2$ on $C$. We prove that the pullback $π^*E$ is a $H-$stable bundle over $X$. This result allows us to relate the corresponding moduli spaces of stable bundles $\mathcal{M}_C(2,d)$ and $\mathcal{M}_{X,H}(2,df,0)$ through an injective morphism. We study the induced morphism at the level of Brill-Noether loci to construct examples of Brill-Noether loci on fibered surfaces. Results concerning the emptiness of Brill-Noether loci follow as a consequence of a generalization of Clifford's Theorem for rank two bundles on surfaces.
description: 15 pages
Measurement of the Ratio Gamma(KL -> pi+ pi-)/Gamma(KL -> pi e nu) and Extraction of the CP Violation Parameter |eta+-|
Creators: name: NA48 Collaboration
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a measurement of the ratio of the decay rates Gamma(KL -> pi+ pi-)/Gamma(KL -> pi e nu), denoted as Gamma(K2pi)/Gamma(Ke3). The analysis is based on data taken during a dedicated run in 1999 by the NA48 experiment at the CERN SPS. Using a sample of 47000 K2pi and five million Ke3 decays, we find Gamma(K2pi)/Gamma(Ke3) = (4.835 +- 0.022(stat) +- 0.016(syst)) x 10^-3. From this we derive the branching ratio of the CP violating decay KL -> pi+ pi- and the CP violation parameter |eta+-|. Excluding the CP conserving direct photon emission component KL -> pi+ pi- gamma, we obtain the results BR(KL -> pi+ pi-) = (1.941 +- 0.019) x 10^-3 and |eta+-| = (2.223 +- 0.012) x 10^-3.
description: 20 pages, 7 figures, accepted by Phys. Lett. B
Automatic Enemy Item Detection Using Natural Language Processing
Creators: name: Peng, Fang
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: This study explores the effectiveness of using Natural Language Processing (NLP) techniques in automatically detecting enemy item pairs within item banks. The overarching goal was to compare and evaluate the performance of various automatic enemy item detection procedures using an operational item pool. To answer the research questions, this study examined the classification results across three conditions: (a) NLP techniques, including Vector Space Model, Latent Semantic Analysis, and Latent Dirichlet Allocation; (b) classification algorithms, including the logistic regression classifier and the Artificial Neural Network classifier, and (c) probability cutoffs ranging from .60 to .90. The classification results were further evaluated by subject matter experts (SMEs), and the models were re-trained using the input from the SMEs. The findings from this study showed the robustness of the NLP techniques in automatic identification of enemy item pairs. The automatic detection process successfully identified additional enemy relationships previously untagged in the item bank. The classification results from the numerous conditions suggested that the LSA and the VSM models consistently outperformed the LDA models and yielded optimal results at the cutoff of .90. Integrating feedback from SMEs further improved the performance. This iterative process greatly reduced the time and manual labor needed for enemy relationship monitoring and offered flexibility for SME review.
Automatic Enemy Item Detection Using Natural Language Processing
Creators: name: Peng, Fang
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: This study explores the effectiveness of using Natural Language Processing (NLP) techniques in automatically detecting enemy item pairs within item banks. The overarching goal was to compare and evaluate the performance of various automatic enemy item detection procedures using an operational item pool. To answer the research questions, this study examined the classification results across three conditions: (a) NLP techniques, including Vector Space Model, Latent Semantic Analysis, and Latent Dirichlet Allocation; (b) classification algorithms, including the logistic regression classifier and the Artificial Neural Network classifier, and (c) probability cutoffs ranging from .60 to .90. The classification results were further evaluated by subject matter experts (SMEs), and the models were re-trained using the input from the SMEs. The findings from this study showed the robustness of the NLP techniques in automatic identification of enemy item pairs. The automatic detection process successfully identified additional enemy relationships previously untagged in the item bank. The classification results from the numerous conditions suggested that the LSA and the VSM models consistently outperformed the LDA models and yielded optimal results at the cutoff of .90. Integrating feedback from SMEs further improved the performance. This iterative process greatly reduced the time and manual labor needed for enemy relationship monitoring and offered flexibility for SME review.
Harassed for Their Job: Exploring Factors That Render Journalists Prone to Harassment and Intimidation
Creators: name: Hiltunen, Ilmari
name: Suuronen, Aleksi
name: Pöyhtäri, Reeta
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Amid growing concern over harassment and intimidation targeting journalists, scholarly attention to their occurrence and implications has mushroomed. One aspect of these phenomena that often gets overlooked is that not all journalists seem equally targeted or affected. Applying ordinal regression analysis of 505 sets of questionnaire responses from Finnish professional journalists, the authors found that only a small proportion of respondents experienced harassment and intimidation regularly, while the vast majority reported being targeted very rarely, if at all. The findings illustrate how certain positions and aspects of journalistic work bring increased risk of facing harassment and intimidation, with investigative journalism, published opinion pieces, work in public broadcasting, and social-media visibility as a journalist identified as strong risk factors. At least in the Finnish context, these facets of the work seem to outweigh personal factors (age, gender, etc.) in predicting overall risk. The evidence supports the call for more comprehensive and carefully designed research arrangements that also acknowledge the role of multiple facets of journalistic work in future studies of harassment and intimidation.
Physical properties of (Mn,Co)Si
Creators: name: Petrova, A. E.
name: Gavrilkin, S. Y.
name: Rybalchenko, G. V.
name: Zibrov, I. P.
name: Stishov, S. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have grown and characterized three samples of Co doped MnSi and studied their physical properties (magnetization and magnetic susceptibility, heat capacity and electrical resistance). All three samples show non-Fermi liquid physical properties. From literature data and current results follow that impurities (Co and Fe) eliminate the first order phase transition peaks and spread the fluctuation maxima in such a way that its low temperature part effectively reaches the zero temperature, where the fluctuations inevitably become quantum. The behavior of low temperature branches of the heat capacity of the samples suggests that a gradual transition from classical to quantum fluctuations can be described by a simple power function of temperature with the exponent less than one. The $dρ/dT$ data generally support this suggestion. The values of the heat capacity exponents immediately lead to the diverging ratio $C_p/T$ and hence to the diverging effective electron mass. We found out that at large concentration of the dopant there are no distinct phase transition points. What we observe is a cloud of the helical fluctuations spreading over a significant range of concentrations and temperatures, which become quantum close to 0~K.
description: 5 hages, 12 figures
Properties of element orders in covers for L(n,q) and U(n,q)
Creators: name: Zavarnitsine, Andrei V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20C33; 20D60

description: We show that if a finite simple group G isomorphic to PSL(n,q) or PSU(n,q), where either $n\ne 4$, or q is prime or even, acts on a vector space over a field of the defining characteristic of G, then the corresponding semidirect product contains an element whose order is distinct from every element order of G. As a consequence, we prove that the group PSL(n,q), where $n\ne 4$ or q prime or even, is recognizable by spectrum from its covers thus giving a partial positive answer to Problem 14.60 from the Kourovka notebook.
Going Viral: Internet and Social Media Based Surveillance Systems for Detecting Influenza Activity in Maryland
Creators: name: Bowen, Lisa
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Epidemiology
subject: Disease Surveillance
subject: Influenza
subject: Social Media

description: Influenza surveillance is essential for detecting and managing outbreaks. The Maryland Department of Health and Mental Hygiene (DHMH) currently includes the number of emergency room and physician visits for influenza-like-illness (ILI) to track flu activity. Recently, internet and social media based surveillance methods have emerged as useful in detecting outbreaks. This study aims to determine if internet and social media based surveillance methods are useful in monitoring ILI in Maryland through assessing how Google Flu Trends (GFT) and tweets compare to portions of DHMH’s formal reporting system. Innovations of this study include using symptom based keywords and incorporating a variety of sources of surveillance data. Results show tweets had a strong positive correlation with all other surveillance sources, Pearson’s correlation coefficients ranged from 0.62-0.68. GFT were more highly correlated with DHMH data. Further research should investigate automating collection of tweets, application to other diseases, and standardized methods for location determination.
Pointing Fingers in the Disinformation Era: How Journalists and Politicians Perceive Each Other’s Role in Spreading Disinformation and Its Impact on their Relationship
Creators: name: van der Goot, Emma
name: Soontjens, Karolin
name: Beckers, Kathleen
name: Buyens, Willem
name: van Aelst, Peter
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Molecular Biology
Neuroscience
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy

description: In an era of post-truth and disinformation, the crucial relationship between journalists and politicians is under increasing pressure. Some politicians publicly question the media’s role in spreading inaccurate and false information, and journalists have reason to be critical of politicians too, as they can easily disseminate falsehoods online. This study deals with how politicians and journalists perceive each other’s role in spreading disinformation, drawing on surveys with political journalists (N = 148) and local politicians (N = 452) in Belgium. We find that 33 percent of politicians, in particular right-wing politicians, blame journalists for spreading “fake news”. Journalists, in turn, are even more critical of politicians: 58 percent of the journalists blame politicians in general, 75 percent blame radical left politicians, and 90 percent blame radical right politicians for spreading disinformation. Importantly, journalists’ views of politicians’ role in spreading disinformation impact their relationship. Although journalists who believe politicians add to the spread of disinformation are not necessarily less likely to interact with politicians, they are significantly more negative about their interactions with politicians. Such perceptions potentially add to the tense relationship between journalists and politicians we are increasingly observing and could have important ramifications for political news-making.
Introducing co-management at Nitinaht Lake, British Columbia
Creators: name: Joseph, Robert
Publisher: name: University of British Columbia
Year: 2009

description: Conventional fisheries management has appeared to be at odds with the rights of Native people in the Province of British Columbia. At the same time many Native Bands want to focus on the salmon fishery for economic and cultural revival. The combination of these two factors with growing management problems for the Federal Department of Fisheries and Oceans (DFO) has, for some Bands resulted in efforts toward cooperative management (co-management) of the resource. This thesis analyzes the outcomes of efforts towards co-management of one Band (Ditidaht, at Nitinaht Lake), and evaluates its effectiveness in the early stages of implementation. The thesis includes both a literature review and a case study that describes the Band's efforts at local control in light of their developing property rights, made stronger by recent court cases. It also describes how the DFO has responded to these developments, and how both groups attempted to keep the process directed toward improved fisheries management. The literature review reveals that while there are a number of advantages to the practice of co-management over conventional systems, there also a number of challenges that face local groups attempting this practice. The case study focuses particular attention on how the Ditidaht Band has responded to these challenges. Strategies used by the Ditidaht Band and the DFO, in response to increasing property;. . rights of the Band, to better manage the salmon fishery and to overcome barriers to the exercise of co-management are documented and analyzed. These strategies have generally evolved from concern for the conservation of salmon on the part of both parties. For the Ditidaht these strategies also involved a search for economic development opportunities. Outcomes of the efforts of the two parties are also analyzed in terms of propositions about co-management set out in the literature. It is concluded that the DFO has been reluctant to grant the Ditidaht control over fisheries management functions and appear to have done so done so reluctantly, and only as a result of recent court cases. Because of this Ditidaht input has been kept to a minimum and basically only involves enforcement. As for the Ditidaht Band, it has not taken full advantage of alliances with other parties as a mechanism for enhancing its control over the resource. The Band has also generally not responded to the importance of internal cohesion by establishing a forum for solving disputes over allocation. They have also failed to see the importance of using public concern for conservation as a strategic tool. The case study highlights the importance of looking beyond short-term interests, in this case economic development, in order to become self-sufficient in the long-term.
The nature of ethics codes in franchise associations around the globe
Creators: name: Preble, John F.
name: Hoffman, Richard C.
Publisher: name: Maryland Shared Open Access Repository
Year: 1999
Subjects: Ethics codes
Global franchising
Self-regulation
Stakeholders

description: The worldwide growth of franchising has been phenomenal during the past decade. At the same time there has been increased media attention to questionable business practices in franchising. Similar to some trade associations and professions, franchising has sought self-regulation by developing codes of conduct or ethics. This study examines the codes of ethics covering franchising activities in 21 countries. The results reveal that there is considerable variation in the activities/issues covered by the codes. Specifically, the codes cover most stages of the franchising relationship, focus on a narrow set of stakeholders, are short on ethical guidance, and offer few enforcement provisions. The implications of these findings for international franchising and research are discussed.
Ratchet Cellular Automata for Colloids in Dynamic Traps
Creators: name: Reichhardt, C. J. Olson
name: Reichhardt, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We numerically investigate the transport of kinks in a ratchet cellular automata geometry for colloids interacting with dynamical traps. We find that thermal effects can enhance the transport efficiency in agreement with recent experiments. At high temperatures we observe the creation and annihilation of thermally induced kinks that degrade the signal transmission. We consider both the deterministic and stochastic cases and show how the trap geometry can be adjusted to switch between these two cases. The operation of the dynamical trap geometry can be achieved with the adjustment of fewer parameters than ratchet cellular automata constructed using static traps.
description: 7 pages, 5 postscript figures
Revisiting the phase diagram of LaFe$_{1-x}$Co$_x$AsO on single crystals by thermodynamic methods
Creators: name: Scaravaggi, Francesco
name: Sauerland, Sven
name: Wang, Liran
name: Kappenberger, Rhea
name: Lepucki, Piotr
name: Dioguardi, Adam P.
name: Hong, Xiaochen
name: Caglieris, Federico
name: Wuttke, Christoph
name: Hess, Christian
name: Grafe, Hans-Joachim
name: Aswartham, Saicharan
name: Wurmehl, Sabine
name: Klingeler, Rüdiger
name: Wolter, Anja U. B.
name: Büchner, Bernd
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this work we revisit the phase diagram of Co-doped LaFeAsO using single crystals and thermodynamic methods. From magnetic susceptibility studies we track the doping evolution of the antiferromagnetic phase, revealing a continuous suppression of $T_\mathrm{N}$ up to 5$\%$ Co doping. In order to study the evolution of the so-called nematic phase, the temperature dependence of the lengths changes along the $a$ and $b$ orthorhombic directions, $ΔL/L_0$, was determined by high-resolution capacitance dilatometry. The results clearly show a gradual reduction of the orthorhombic distortion $δ$ and of $T_\mathrm{S}$ with increasing Co content up to 4.5$\%$, while it is completely suppressed for 7.5$\%$ Co. Bulk superconductivity was found in a small doping region around 6$\%$ Co content, while both $T_\mathrm{c}$ and the superconducting volume fraction rapidly drop in the neighbouring doping regime. Ultimately, no microscopic coexistence between the superconducting and magnetic phases can be assessed within our resolution limit, in sharp contrast with other iron-pnictide families, e.g., electron- and hole-doped BaFe$_2$As$_2$.
Constraining the Variation of G by Cosmic Microwave Background Anisotropies
Creators: name: Chan, K. C.
name: Chu, M. -C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the Cosmic Microwave Background Anisotropies (CMBA) power spectra to constrain the cosmological variation of gravitational constant G. It is found that the sensitivity of CMBA to the variation of G is enhanced when G is required to converge to its present value. The variations of G from the CMB decoupling epoch z ~ 1000 to the present time are modelled by a step function and a linear function of scale factor $a$ respectively, and the corresponding 95% confidence intervals for G/G_0 are [0.95, 1.05] and [0.89, 1.13], G_0 being the present value. The CMBA constraint is unique in the sense that it entails the range of redshift from z \approx 1000 to 0.
description: 7 pages, 8 figures, discussion added, references added
+ Space: Appropriation of Urban Infrastructure
Creators: name: Weller, Sofia
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Architecture
subject: FOS: Civil engineering

description: This thesis explores and proposes urban design schemes for three underutilized and partially abandoned industrial and transportation properties that are presently voids and that are divisive to the urban fabric of Copenhagen’s central city. The sites of the voids are located along the rail line that currently and historically serve Copenhagen’s Central Train Station. These are Banegardspladsen and the two Boulevard Line’s voids. The goal of this thesis is to propose an urban design scheme that follows a feasibility study that states the opportunities and limitations set by Copenhagen’s municipality, the community, as well as the property owners. The scheme proposes the interlinking of the physical aspect of a living city with it’s culture, not only to serve the locals but to welcome visitor by providing Copenhagen with a desired central gathering space as well as a place for arrival to the city. The urban intervention becomes a celebration of History, an exhibition of the transportation culture of the city and provides a series of public spaces that encourage spontaneous events threaded by a string of pedestrian and bike paths.
On the Accuracy of Galileo's Observations
Creators: name: Graney, Christopher M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: Galileo Galilei had sufficient skill as an observer and instrument builder to be able to measure the positions and apparent sizes of objects seen through his telescopes to an accuracy of 2" or better. However, Galileo had no knowledge of wave optics, so when he was measuring stellar apparent sizes he was producing very accurate measurements of diffraction artifacts and not physical bodies.
description: Post-publication version with large figures, posted to arxiv with OK of Baltic Astronomy
Black holes in the long-range limit of torsion bigravity
Creators: name: Nikiforova, Vasilisa
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We continue the study of spherically symmetric black hole solutions in torsion bigravity, a class of Einstein-Cartan-type gravity theories involving, besides a metric, a massive propagating torsion field. In the infinite-range limit, these theories admit asymptotically flat black hole solutions related to the presence of attractive fixed points in the asymptotic radial evolution of the metric and the torsion. We discuss these fixed points, and the way they are approached at large radii. Several phenomenological aspects of asymptotically flat torsion-hairy black holes are discussed: (i) location of the light ring and of the shadow; (ii) correction to the redshift of orbiting stars; and (iii) modification of the periastron precession of orbiting stars. By comparing the observable properties of torsion-hairy black holes to existing observational data on supermassive black holes obtained by the Event Horizon Telescope collaboration, and by the GRAVITY collaboration, we derive constraints on the theory parameters of torsion bigravity. The strongest constraint is found to come from the recent measurement of the periastron precession of the star S2 orbiting the Galactic-center massive black hole [Astron. Astrophys. 636, L5 (2020)], and to be a thousand times more stringent than solar-system gravitational tests.
Form and process in Morton Feldman’s Spring of Chosroes
Creators: name: Paynter, Terrence Jack
Publisher: name: University of British Columbia
Year: 2009

description: The music of Morton Feldman has been noted for the sense of stasis and linear discontinuity it projects. However, recent analytic studies have shown that linear processes direct the horizontal dimension. This thesis investigates process and form in Feldman's Spring of Chosroes (1977) by segmenting the piece into discrete units called modules that are affiliated by coincident structural features and by developmental relationships. The interconnected modules, particularly those that share aspects of pitch, rhythm, and register, articulate form. The formal plan of the piece is ABA': section A' engages the modular structure of section A, and parallelisms in section B create palindromic relationships. Two sets of modules, each of which are connected by developmental processes, comprise large-scale frameworks that reflect the ternary sectional structure and the palindromic design of section B. Processes of rhythmic deceleration in sections A and A' reinforce the sectional design in that the initial modules in each section generate momentum that is gradually slowed by transformations of their rhythm patterns. The music is structurally weighted toward its two central modules. Each module bisects a set of palindromically related modules, and together they bisect the piece as a whole. Organic and inorganic processes unite al l levels of form and they connect local and large-scale structures. Effects of disconnectedness, then, are seen to be surface phenomena that arise from the interaction of disparate, ordered structures.
Beautiful Fictions: Composing the Artificial in the Work of Mickalene Thomas
Creators: name: Shine, Tyler
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Art history
subject: African American studies
subject: Gender studies
subject: artifice
subject: beauty
subject: collage
subject: gender
subject: identity
subject: race

description: This thesis considers three paintings by the contemporary African American artist

Mickalene Thomas. I argue that Thomas uses collage to analyze and highlight the

socially constructed nature of identities and surroundings. I propose that collage

functions in three ways in Thomas’s work: as a medium, an artistic strategy, and a

metaphor for the multiple states of being in the world. Thomas refracts the art

historical genres of portraiture, landscape, and still life through a black, queer, female

lens that presents the complexities of black female subjectivities. However, the

paucity of critical literature on Thomas’s work is indicative of a broader problem in

contemporary art historical discourse when interpreting works by Black artists and

often requires these artists to foreground their cultural and physical differences. This

thesis redresses the simplistic interpretations of Thomas’s work by demonstrating the

breadth and depth of her conceptual interests and in doing so argues that her works

are propositions for how we might conceptualize the history of art.
Modular thermal inflation without slow-roll approximation
Creators: name: Gong, Jinn-Ouk
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study an inflationary scenario where thermal inflation is followed by fast-roll inflation. This is a rather generic possibility based on the effective potentials of spontaneous symmetry breaking in the context of particle physics models. We show that a large enough expansion could be achieved to solve cosmological problems. However, the power spectrum of primordial density perturbations from the quantum fluctuations in the inflaton field is not scale invariant and thus inconsistent with observations. Using the curvaton mechanism instead, we can obtain a nearly scale invariant spectrum, provided that the inflationary energy scale is sufficiently low to have long enough fast-roll inflation to dilute the perturbations produced by the inflaton fluctuations.
description: (v1) 13 pages, 1 table, no figure; (v2) 14 pages, 1 table, no figure, References added; (v3) A new subsection (3.2.3) added, one reference added, to appear in Physics Letters B
Imprint of baryons and massive neutrinos on velocity statistics
Creators: name: Kuruvilla, Joseph
name: Aghanim, Nabila
name: McCarthy, Ian G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We explore the impact of baryonic effects (namely stellar and AGN feedback) on the moments of pairwise velocity using the Illustris-TNG, EAGLE, cosmo-OWLS, and BAHAMAS suites of cosmological hydrodynamical simulations. The assumption that the mean pairwise velocity of the gas component follows that of the dark matter is studied here at small separations, and we find that even at pair separations of 10-20 $h^{-1}\mathrm{Mpc}$ there is a 4-5% velocity bias. At smaller separations, it gets larger with strength varying depending on the subgrid prescription. By isolating different physical processes, our findings suggest that the large scale velocity bias is mainly driven by stellar rather than AGN feedback. If unaccounted for, this velocity offset could possibly bias cosmological constraints from the kinetic Sunyaev-Zel'dovich effect in future cosmic microwave background (CMB) surveys. Furthermore, we examine how the first and the second moment of the pairwise velocity are affected by both the baryonic and the neutrino free-streaming effects for both the matter and gas components. For both moments, we were able to disentangle the effects of baryonic processes from those of massive neutrinos; and below pair separations of 20 $h^{-1}\mathrm{Mpc}$, we find that these moments of the pairwise velocity decrease with increasing neutrino mass. Our work thus paves a way in which the pairwise velocity statistics can be utilised to constrain the summed mass of neutrinos from future CMB surveys and peculiar velocity surveys.
description: 10 pages, 10 figures, accepted for publication in A&A
Determine the Function of a Specific Immunoglobulin Domain of Titin in Zebrafish
Creators: name: Xinghang Jiang
Publisher: name: University of Illinois at Chicago
Year: 2020
Subjects: Uncategorized

description: Mutations in genes encoding cardiac ion channels, transcription factors, and myocardial structural proteins have been identified in patients with early-onset atrial fibrillation (EOAF). However, the underlying mechanisms by which structural proteins give rise to atrial fibrillation (AF) remain unclear. Titin (TTN) is a multi-domain protein essential for sarcomere assembly during heart development and the restoration of normal sarcomere length after cardiomyocyte contraction. Previous work on a truncated TTN suggested that disruption of the sarcomeric organization may lead to EOAF. However, it remains unknown what role a specific TTN domain might play in abnormal sarcomere development and/or maturation. Our collaborator identified a TTN missense mutation (T31115I) in a patient with EOAF and showed that it co-segregates in the patient’s family for three generations. To elucidate whether the T31115I mutant causes AF and what the underlying mechanisms might be, I adopted two CRISPR-Cas9-mediated approaches: 1) homology-directed repair to introduce this mutation into the zebrafish ortholog, ttna; and 2) generation of two mutant ttna alleles, ttnaΔ6 and ttnaΔ9, with 6 or 9 amino acids deleted, respectively, within a highly conserved region containing the site of T31115I mutation. ttnaΔ9/Δ9 zebrafish embryos demonstrated inflow tract edema, pericardial edema, blood clots, atrial enlargement, and reduced cardiac function, as indicated by lower ventricular contraction and cardiac output. These data suggest that the specific region deleted in ttnaΔ9 is important for proper cardiac function. As the highly conserved region contains the EOAF-associated TTN point mutation, further investigation of this region may not only reveal more biological pathways that involve titin, but also provide more insights into the pathogenesis of EOAF.
Almost periodic divisors, holomorphic functions, and holomorphic mappings
Creators: name: Favorov, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32A60(Primary), 42A75 (Secondary)

description: We prove that to each almost periodic (in the sense of distributions) divisor in a tube one can assign a first Chern class of a special line bundle over Bohr's compact set generated by the divisor such that the trivial cohomology class represents divisors of all almost periodic holomorphic functions on a tube. This description yields various geometric conditions for an almost periodic divisor to be the divisor of a holomorphic almost periodic function. We also give a complete description for the divisors of homogeneous coordinates for holomorphic almost periodic curves; in particular, we obtain a description for the divisors of meromorphic almost periodic functions.
Eruptive Behavior of Magnetically Layered Protoplanetary Disks in Low Metallicity Environments
Creators: name: Kadam, Kundan
name: Vorobyov, Eduard
name: Kóspál, Ágnes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: A protoplanetary disk typically forms a dead zone near its midplane at the distance of a few au from the central protostar. Accretion through such a magnetically layered disk can be intrinsically unstable and has been associated with episodic outbursts in young stellar objects. We present the first investigation into the effects of low metallicity environment on the structure of the dead zone as well as the resulting outbursting behavior of the protoplanetary disk. We conducted global numerical hydrodynamic simulations of protoplanetary disk formation and evolution in the thin-disk limit. The consequences of metallicity were considered via its effects on the gas and dust opacity of the disk, the thickness of the magnetically active surface layer, and the temperature of the prestellar cloud core. We show that the metal poor disks accumulate much more mass in the innermost regions, as compared to the solar metallicity counterparts. The duration of the outbursting phase also varies with metallicity - the low metallicity disks showed more powerful luminosity eruptions with a shorter burst phase, which was confined mostly to the early, embedded stages of the disk evolution. The lowest metallicity disks with the higher cloud core temperature showed the most significant differences. The occurrence of outbursts was relatively rare in the disks around low mass stars and this was especially true at lowest metallicities. We conclude that the metal content of the disk environment can have profound effects on both the disk structure and evolution in terms of episodic accretion.
description: 24 pages, 11 figures
A Model of a Trust-based Recommendation System on a Social Network
Creators: name: Walter, Frank E.
name: Battiston, Stefano
name: Schweitzer, Frank
Publisher: name: arXiv
Year: 2006
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Information Retrieval (cs.IR)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this paper, we present a model of a trust-based recommendation system on a social network. The idea of the model is that agents use their social network to reach information and their trust relationships to filter it. We investigate how the dynamics of trust among agents affect the performance of the system by comparing it to a frequency-based recommendation system. Furthermore, we identify the impact of network density, preference heterogeneity among agents, and knowledge sparseness to be crucial factors for the performance of the system. The system self-organises in a state with performance near to the optimum; the performance on the global level is an emergent property of the system, achieved without explicit coordination from the local interactions of agents.
description: v3 revised as compared to v2 (figures updated, clarifications). Accepted for publication in J. Autonomous Agents and Multi-Agent Systems (2007)
Istat database: graphical interface to access data via query
Creators: name: Spadaro, Massimiliano
name: Alessandrini, Stefano
name: Morea, Fabio
Publisher: name: Zenodo
Year: 2022

description: Istat, National Italian Statistical Institute, holds a significant amount of extremely valuable data at national level, a basis from which useful information can be extracted, analyzed and elaborated. Traditional access to the database available on the official website http://dati.istat.it/, however, can often be time-consuming. The objective of this work is therefore to describe the process carried out to make public and usable a dashboard regarding the data flows of the National Institute of Statistics. This graphical interface allows, thanks to its dynamic display, to guide the user in the construction of a query that can be executed through the command prompt (cmd), using the cURL utility and thus being able to easily download the desired data. Files available: Report " Interfaccia grafica per la costruzione di queries alla banca dati dell’Istat" Video "Lo standard SDMX. La banca dati Istat e la dashboard dedicata per costruire la query" dati-istat-standard-sdmx.zip (code and output of the code)
Almost periodic functions in finite-dimensional space with the spectrum in a cone
Creators: name: Favorov, S.
name: Udodova, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 43A60; 32A60

description: An almost periodic function in finite-dimensional space extends to a holomorphic bounded function in a tube domain with a cone in the base if and only if the spectrum belongs to the conjugate cone. Also, an almost periodic function in finite-dimensional space has the bounded spectrum if and only if it extends to an entire function of exponential type.
On His Majesty’s service: George Heriot’s Travels through the Canadas
Creators: name: Denny, Carol Elizabeth
Publisher: name: University of British Columbia
Year: 2009

description: George Heriot's, Travels Through The Canadas, Containing a Description of the Picturesque Scenery on some of the Rivers and Lakes; with an account of the Productions, Commerce, and Inhabitants of those Provinces to which is Subjoined a Comparative View of the Manners and Customs of Several of the Indian Nations of North and South America, was first published in London in 1805. Presenting the Canadas in a documentary and picturesque mode, Heriot's Travels since its publication has been valued as an important source of data and information. It has thus participated in and formed part of the received notions concerning Canada and its peoples in the 19th century. My thesis explores how Heriot's Travels constructs and represents Upper and Lower Canada and the diverse inhabitants of these regions. I argue that the text and its illustrations far from providing an objective description, in fact give form to contemporaneous perceptions and values and to aesthetic criteria that had colonialist implications. In particular the thesis examines how the visual material within the publication functions to reinforce or contradict the text's agenda. My contention is that Heriot's aims are much broader than those to which he admitted. For his readers the representation of Canada was tied to prospects of vast expansionist possibilities for British capital, technology, commodities and systems of knowledge. The unacknowledged aims of the book, as elaborated in my thesis were: to confirm the superiority of British rule in comparison to the earlier French administration in Canada; to define the British by a comparison to others, thus marking out existing inhabitants, specifically the French Canadians and First Nations peoples, as simple, indolent and inferior; to tame and commodity Canada through the use of the picturesque, thus ordering and civilizing the landscape for a British audience and would-be immigrants; and, finally, to reinforce Britain's economic claims in British North America. As in other travel writing of the eighteenth and nineteenth centuries, Heriot employs in his representation of Canada the discursive languages of science, taxonomy, technology and ethnology. The picturesque descriptions in text and image work in conjunction with these and serve to demonstrate the role of art and aesthetics in maintaining an established order, and in asserting its classificatory regimes and exclusions. iii
On the Matching Conditions for the Collapsing Cylinder
Creators: name: Herrera, L.
name: MacCallum, M. A. H.
name: Santos, N. O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We review the matching conditions for a collapsing anisotropic cylindrical perfect fluid, recently discussed in the literature (2005 {\it Class. Quantum Grav.} {\bf 22} 2407). It is shown that radial pressure vanishes on the surface of the cylinder, contrary to what is asserted in that reference. The origin of this discrepancy is to be found in a mistake made in one step of the calculations. Some comments about the relevance of this result in relation to the momentum of Einstein--Rosen waves are presented.
description: Submitted to Class. Quant. Grav. as a comment
Solutions of algebraic equations with analytic almost periodic coefficients
Creators: name: Britik, V.
name: Favorov, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42A75; 30D45

description: A continuous solution of an algebraic equation with holomorphic almost periodic coefficients is also almost periodic.
A Distributed Algorithm for Overlapped Community Detection in Large-Scale Networks
Creators: name: Saha, Dibakar
name: Mandal, Partha Sarathi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Overlapped community detection in social networks has become an important research area with the increasing popularity and complexity of the networks. Most of the existing solutions are either centralized or parallel algorithms, which are computationally intensive - require complete knowledge of the entire networks. But it isn't easy to collect entire network data because the size of the actual networks may be prohibitively large. This may be a result of either privacy concerns or technological impediments. Performing in-network computation solves both problems utilizing the computational capability of the individual nodes of the network. Simultaneously, nodes communicate and share data with their neighbors via message passing, which may go a long way toward mitigating individual nodes' privacy concerns in the network. All the aforementioned concerns motivated us to design a decentralized or distributed technique to detect overlapped communities in a large-scale network. It is desirable because this technique does not offer a single point of failure, and the system as a whole can continue to function even when many of the nodes fail. In this paper, we address the overlapped community detection problem for large-scale networks. We present an efficient distributed algorithm, named DOCD, to identify the overlapped communities in the network. The DOCD algorithm's efficiency is verified with extensive simulation study on real network data such as Dolphin, Zachary karate club, Football club, and Facebook ego networks. We show that DOCD algorithm is capable of keeping the asymptotically same results with the existing classical centralized algorithms in terms of community modularity and the number of identified communities. The DOCD algorithm can also efficiently identify the overlapped nodes and overlapped communities with a small number of rounds of communication and computation.