cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
BakedAvatar: Baking Neural Fields for Real-Time Head Avatar Synthesis
Creators: name: Duan, Hao-Bin
name: Wang, Miao
name: Shi, Jin-Chuan
name: Chen, Xu-Chuan
name: Cao, Yan-Pei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Graphics (cs.GR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Synthesizing photorealistic 4D human head avatars from videos is essential for VR/AR, telepresence, and video game applications. Although existing Neural Radiance Fields (NeRF)-based methods achieve high-fidelity results, the computational expense limits their use in real-time applications. To overcome this limitation, we introduce BakedAvatar, a novel representation for real-time neural head avatar synthesis, deployable in a standard polygon rasterization pipeline. Our approach extracts deformable multi-layer meshes from learned isosurfaces of the head and computes expression-, pose-, and view-dependent appearances that can be baked into static textures for efficient rasterization. We thus propose a three-stage pipeline for neural head avatar synthesis, which includes learning continuous deformation, manifold, and radiance fields, extracting layered meshes and textures, and fine-tuning texture details with differential rasterization. Experimental results demonstrate that our representation generates synthesis results of comparable quality to other state-of-the-art methods while significantly reducing the inference time required. We further showcase various head avatar synthesis results from monocular videos, including view synthesis, face reenactment, expression editing, and pose editing, all at interactive frame rates.
description: ACM Transactions on Graphics (SIGGRAPH Asia 2023). Project Page: https://buaavrcg.github.io/BakedAvatar
MPEC 2023-X39 : 2023 VQ17
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VQ17

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Generalized Craig Interpolation for Stochastic Boolean Satisfiability Problems with Applications to Probabilistic State Reachability and Region Stability
Creators: name: Teige, Tino
name: Fränzle, Martin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: D.2.4; F.3.1; F.4.1

description: The stochastic Boolean satisfiability (SSAT) problem has been introduced by Papadimitriou in 1985 when adding a probabilistic model of uncertainty to propositional satisfiability through randomized quantification. SSAT has many applications, among them probabilistic bounded model checking (PBMC) of symbolically represented Markov decision processes. This article identifies a notion of Craig interpolant for the SSAT framework and develops an algorithm for computing such interpolants based on a resolution calculus for SSAT. As a potential application area of this novel concept of Craig interpolation, we address the symbolic analysis of probabilistic systems. We first investigate the use of interpolation in probabilistic state reachability analysis, turning the falsification procedure employing PBMC into a verification technique for probabilistic safety properties. We furthermore propose an interpolation-based approach to probabilistic region stability, being able to verify that the probability of stabilizing within some region is sufficiently large.
Proxemic Peddler: A Public Advertising Display that Captures and Preserves the Attention of a Passerby
Creators: name: Wang, M.
name: Boring, S.
name: Greenberg, S.
Publisher: name: ACM
Year: 2012

description: Effective street peddlers monitor passersby, where they tune their message to capture and keep the passerby's attention over the entire duration of the sales pitch. Similarly, advertising displays in today's public environments can be more effective if they were able to tune their content in response to how passersby were attending them vs. just showing fixed content in a loop. Previously, others have prototyped displays that monitor and react to the presence or absence of a person within a few proxemic (spatial) zones surrounding the screen, where these zones are used as an estimate of attention. However, the coarseness and discrete nature of these zones mean that they cannot respond to subtle changes in the user's attention towards the display. In this paper, we contribute an extension to existing proxemic models. Our Peddler Framework captures (1) fine-grained continuous proxemic measures by (2) monitoring the passerby's distance and orientation with respect to the display at all times. We use this information to infer (3) the passerby's interest or digression of attention at any given time, and (4) their attentional state with respect to their short-term interaction history over time. Depending on this attentional state, we tune content to lead the passerby into a more attentive stage, ultimately resulting in a purchase. We also contribute a prototype of a public advertising display -- called Proxemic Peddler -- that demonstrates these extensions as applied to content from the Amazon.com website.
Туристично-рекреаційні ресурси аеропортів: формування та сприяння інтересам споживачів
Creators: name: Galyna, Agieieva
Publisher: name: Zenodo
Year: 2022
Subjects: аеропорт
рекреаційні ресурси
приаеродромна територія
архітектурне середовище
привокзальна площа
медійні об'єкти
архітектурні ресурси
культурологічні ресурси
містобудування
планувальна організація

description: Аеропорти – складні транспортні підприємства – мають свої особливості планування та забудови, експлуатації та комерційного розвитку, які реалізуються в жорстких рамках забезпечення безпеки польотів. Значна частка об’єктів розташована в контрольованій зоні, що обмежує доступ пересічних громадян до них та, як наслідок, виключає можливість їх вільного відвідування та вивчення. Для більшості відвідувачів аеропорту головною ціллю є авіаційна подорож, в якій аеропорт виконує функції декількох пунктів призначення, а саме - початкового / кінцевого, або – проміжного. Разом з тим, аеропорти мають декілька якостей та передумов для включення до царини туристично-рекреаційних ресурсів країн, регіонів, міст.
MPEC 2023-X40 : 2023 WZ3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 WZ3

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
The Fat Thumb: Using the Thumb's Contact Size for Single-Handed Mobile Interaction.
Creators: name: Boring, S.
name: Ledo, D.
name: Chen, X.
name: Marquardt, N.
name: Tang, A.
name: Greenberg, S.
Publisher: name: ACM
Year: 2012

description: Modern mobile devices allow a rich set of multi-finger interactions that combine modes into a single fluid act, for example, one finger for panning blending into a two-finger pinch gesture for zooming. Such gestures require the use of both hands: one holding the device while the other is interacting. While on the go, however, only one hand may be available to both hold the device and interact with it. This mostly limits interaction to a single-touch (i.e., the thumb), forcing users to switch between input modes explicitly. In this paper, we contribute the Fat Thumb interaction technique, which uses the thumb's contact size as a form of simulated pressure. This adds a degree of freedom, which can be used, for example, to integrate panning and zooming into a single interaction. Contact size determines the mode (i.e., panning with a small size, zooming with a large one), while thumb movement performs the selected mode. We discuss nuances of the Fat Thumb based on the thumb's limited operational range and motor skills when that hand holds the device. We compared Fat Thumb to three alternative techniques, where people had to precisely pan and zoom to a predefined region on a map and found that the Fat Thumb technique compared well to existing techniques.
The geometry of the quantum Zeno effect
Creators: name: Facchi, Paolo
name: Pascazio, Saverio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81Q70

description: The quantum Zeno effect is described in geometric terms. The quantum Zeno time (inverse standard deviation of the Hamiltonian) and the generator of the quantum Zeno dynamics are both given a geometric interpretation.
description: 7 pages, 1 figure
Brain Stimulation
Creators: name: Tepfer, Lindsey
name: Ng, Tommy Ho-Yee
name: Smith, David Victor
name: Shaoming Wang
name: Gaisinsky, Jane
name: Sharp, Cooper Joseph
Publisher: name: OSF
Year: 2017

description: Starstim protocol. Noninvasive Brain Stimulation: Stores guides related to our 8-channel transcranial current stimulator (StarStim, Neuroelectrics).
Temporal coherence of nutrients and implications for understanding British Columbia lake water quality variation
Creators: name: Jensen, Ernest Victor
Publisher: name: University of British Columbia
Year: 2010

description: Temporal coherence, or the degree to which lakes behave similarly through time, provides new insights into the relationship between extrinsic drivers such as climate, and synchronous variation in lake variables at scales beyond the individual lake and catchment. A review of relevant literature suggests coherence of nutrients is highest among proximate pairs of short water residence time lakes within a common drainage path. High connectivity and short water residence times reduce the potential for catchment and lake specific alteration of the discharge signal. Few studies to date have explored coherence of total nitrogen and total phosphorus among lakes. To evaluate nutrient coherence among British Columbia (BC) lakes, I assembled spring estimates of total nitrogen and total phosphorus values over the period 1977 to 2007 for twenty-six lakes. To optimize coherence, I utilized a depth composite mean from a single deep site on lakes with at least 10 years of spring data. All lakes occur in catchments with varying degrees of anthropogenic disturbance and reflect a broad range of lake morphology and climatic conditions in both coastal and interior areas of BC. I explored the potential for climate to cause nutrient coherence by determining whether discharge was synchronous among nearby drainages, and whether lake nutrient variability was dependent on antecedent catchment discharge. Subsequently, I tested whether nutrient coherence was dependent on lake-pair proximity, similarity in lake water residence time, or lake fertility. Temporal coherence was calculated as the average Pearson Product Moment Correlation (r). Discharge was found to be highly coherent, particularly among streams in southern BC, over distances of several hundred kilometers. Temporal coherence of total nitrogen among lakes at all spatial scales was very weak but positive. Coherence was greater and positive for total phosphorus. Phosphorus coherence was not dependent on lake pair proximity, and dependence on water residence time was limited to coastal lakes. Temporal coherence of phosphorus was significantly greater for oligo-mesotrophic lakes than eutrophic lakes across significant spatial scales. These findings should be considered when interpreting lake response to local stressors and setting lake management targets.
An automatic framework for extracting and classifying near-miss clone genealogies
Creators: name: Saha, R.K.
name: Roy, C.K.
name: Schneider, K.A.
Publisher: name: IEEE
Year: 2011

description: Extracting code clone genealogies across multiple versions of a program and classifying them according to their change patterns underlies the study of code clone evolution. While there are a few studies in the area, the approaches do not handle near-miss clones well and the associated tools are often computationally expensive. To address these limitations, we present a framework for automatically extracting both exact and near-miss clone genealogies across multiple versions of a program and for identifying their change patterns using a few key similarity factors. We have developed a prototype clone genealogy extractor, applied it to three open source projects including the Linux Kernel, and evaluated its accuracy in terms of precision and recall. Our experience shows that the prototype is scalable, adaptable to different clone detection tools, and can automatically identify evolution patterns of both exact and near-miss clones by constructing their genealogies.
Standoff Detection via Single-Beam Spectral Notch Filtered Pulses
Creators: name: Natan, Adi
name: Levitt, Jonathan M.
name: Graham, Leigh
name: Katz, Ori
name: Silberberg, Yaron
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate single-beam coherent anti-Stokes Raman spectroscopy (CARS), for detecting and identifying traces of solids, including minute amounts of explosives, from a standoff distance (>50 m) using intense femtosecond pulses. Until now, single-beam CARS methods relied on pulse-shapers in order to obtain vibrational spectra. Here we present a simple and easy-to-implement detection scheme, using a commercially available notch filter, that does not require the use of a pulse-shaper.
description: 3 pages, 3 figures
Chatbot-supported Thesis Writing: An Autoethnographic Report
Creators: name: Schwenke, Nicolas
name: Söbke, Heinrich
name: Kraft, Eckhard
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computers and Society (cs.CY)
subject: Computation and Language (cs.CL)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: I.2.7; I.2.1; K.3.1
subject: 97U50 (Primary), 68T50 (Secondary)

description: The release of the large language model based chatbot ChatGPT in November 2022 has brought considerable attention to the subject of artificial intelligence, not only in the public. From the perspective of higher education, ChatGPT challenges various learning and assessment formats as it significantly reduces the effectiveness of their learning and assessment functionalities. In particular, ChatGPT might be applied to formats that require learners to generate text, such as bachelor theses or student research papers. Accordingly, the research question arises to what extent writing of bachelor theses is still a valid learning and assessment format. Correspondingly, in this study, the first author was asked to write his bachelor's thesis exploiting ChatGPT. For tracing the impact of ChatGPT, methodically an autoethnographic approach was used. First, all considerations on the potential use of ChatGPT were documented in logs and secondly, all ChatGPT chats were logged. Both logs and chat histories were analyzed and are presented along to the recommendations for students regarding the use of ChatGPT suggested by Gimpel et al. (2023). In conclusion, ChatGPT is beneficial in thesis writing during various activities, such as brainstorming, structuring and text revision. However, there arise limitations, e.g., in referencing. Thus, ChatGPT requires a continuous validation of the outcomes generated fostering learning. Currently, ChatGPT is to be valued as a beneficial tool in thesis writing. However, writing a conclusive thesis still requires the learner's meaningful engagement. Accordingly, writing a thesis is still a valid learning and assessment format. With further releases of ChatGPT, an increase in capabilities is to be expected and the research question needs to be reevaluated from time to time.
description: 26 pages
MPEC 2023-X41 : 2023 XF
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 XF

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
A vision for generic concern-oriented requirements reuse
Creators: name: Mussbacher, G.
name: Kienzle, J.
Publisher: name: IEEE
Year: 2013

description: Reuse is a powerful tool for improving the productivity of software development. The paper puts forward arguments in favor of generic requirements reuse rooted in the vision that effectiveness requires a focus on coordinated composition of reusable artifacts across the whole software development life cycle. A survey of publications on requirements reuse from the International Requirements Engineering (RE) Conference series determines the research landscape in this area over the last twenty years, assessing the hypothesis that there is no or little research reported at RE about generic reuse of requirements models that spans the software development life cycle. The paper then outlines, for the RE community, a research agenda associated with the presented vision for such an approach to requirements reuse that builds on concern-orientation, i.e., the ability to modularize and compose important requirements concerns throughout the software development life cycle, and model-engineering principles. In addition, early research results are briefly presented that illustrate favorably the feasibility of such an approach.
How to detect gravitational waves through the cross-correlation of the galaxy distribution with the CMB polarization
Creators: name: Alizadeh, Esfandiar
name: Hirata, Christopher M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Thompson scattering of cosmic microwave background (CMB) photons off of free electrons during the reionization epoch induces a correlation between the distribution of galaxies and the polarization pattern of the CMB, the magnitude of which is proportional to the quadrupole moment of radiation at the time of scattering. Since the quadrupole moment generated by gravitational waves (GWs) gives rise to a different polarization pattern than that produced by scalar modes, one can put interesting constraints on the strength of GWs on large scales by cross-correlating the small scale galaxy distribution and CMB polarization. We use this method together with Fisher analysis to predict how well future surveys can measure the tensor-to-scalar ratio $r$. We find that with a future CMB experiment with detector noise Delta_P = 2 mu K-arcmin and a beam width theta_FWHM = 2' and a future galaxy survey with limiting magnitude I<25.6 one can measure the tensor-to-scalar ratio with an error sigma_r \simeq 0.09. To measure r \approx 0.01, however, one needs Delta_P \simeq 0.5 mu K-radian and theta_FWHM \simeq 1'. We also investigate a few systematic effects, none of which turn out to add any biases to our estimators, but they increase the error bars by adding to the cosmic variance. The incomplete sky coverage has the most dramatic effect on our constraints on r for large sky cuts, with a reduction in signal-to-noise smaller than one would expect from the naive estimate (S/N)^2 \propto f_sky. Specifically, we find a degradation factor of f_deg=0.32 \pm 0.01 for a sky cut of |b|>10^\circ (f_sky=0.83) and f_deg=0.056 \pm 0.004 for a sky cut of |b|>20^\circ (f_sky=0.66). Nonetheless, given that our method has different systematics than the more conventional method of observing the large scale B modes directly, it may be used as an important check in the case of a detection.
description: 18 pages, 6 figures, to be submitted to PRD
Leviathan or paper tiger
Creators: name: Rupakheti, Sanjog
Publisher: name: No Publisher Supplied
Year: 2012

description: This dissertation is based on a range of previously unstudied archival sources. It reveals the fragmented nature of power in the Himalayas through much of the eighteenth century. This was the time when a coalition of families identified as House of Gorkha began to consolidate its control in the region. Unlike the other South Asian states of the eighteenth century, the Nepali state did not grow by focusing on military power but by the intertwined strategies of literary and religious patronage, the creation of genealogies and legal codes and the politicization of ritual and rank. The hierarchical distribution of privileges and exemptions shaped by family, clan and gender relations generated regimes of power that over time developed into a state system and established Nepal on its path to monarchy. Sensitivity to dispersed sites of power such as the household, family and clan enables us to understand the nineteenth-century processes by which legal codes came to be invested with great authority. This is especially true of the compilation called the Ain of 1854. Scholars of legal history have compared it to the British Indian Legal Code of 1837 and 1861. My research demonstrates instead that it was a document, which projected the political-juridical claims of the House of Gorkha over laboring groups and its right to collect income from fines. In other words, the struggle to define ‘moral law’ using the Ain was intended to establish clear claims of one group to the labor and fealty of others. The House of Gorkha pushed for social differentiation through the Ain. The concept of justice in that code was status-differentiated. The eminence of the family and clan mattered for this reason. In turn, the eminence of a family rested on the successful management of marriage relations. Thus social relationships were not trans-historical fossilized entities but fully sensitive to the political-economic flows of the period. In historically plotting the lineage of one such state in Nepal, my research urges nationalist and post-colonial historians of South Asia not to treat colonial and national boundaries as being impermeable to history.
Toward game orchestration: tangible manipulation of in-game experiences
Creators: name: Graham, T.C. Nicholas
name: Bellay, Quentin
name: Schumann, Irina
name: Sepasi, Amir
Publisher: name: ACM
Year: 2012

description: We define game orchestration as the activity of creating experiences for game players at run-time. This paper presents a design space for game orchestration techniques, and describes two novel game orchestration systems.
Probing the envelopes of massive young stellar objects with diffraction limited mid-infrared imaging
Creators: name: Wheelwright, H. E.
name: de Wit, W. J.
name: Oudmaijer, R. D.
name: Hoare, M. G.
name: Lumsden, S. L.
name: Fujiyoshi, T.
name: Close, J. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Massive stars form whilst they are still embedded in dense envelopes. As a result, the roles of rotation, mass loss and accretion in massive star formation are not well understood. This study evaluates the source of the Q-band, lambda=19.5 microns, emission of massive young stellar objects (MYSOs). This allows us to determine the relative importance of rotation and outflow activity in shaping the circumstellar environments of MYSOs on 1000 AU scales. We obtained diffraction limited mid-infrared images of a sample of 20 MYSOs using the VLT/VISIR and Subaru/COMICS instruments. For these 8 m class telescopes and the sample selected, the diffraction limit, ~0.6", corresponds to approximately 1000 AU. We compare the images and the spectral energy distributions (SEDs) observed to a 2D, axis-symmetric dust radiative transfer model that reproduces VLTI/MIDI observations of the MYSO W33A. We vary the inclination, mass infall rate, and outflow opening angle to simultaneously recreate the behaviour of the sample of MYSOs in the spatial and spectral domains. The mid-IR emission of 70 percent of the MYSOs is spatially resolved. In the majority of cases, the spatial extent of their emission and their SEDs can be reproduced by the W33A model featuring an in-falling, rotating dusty envelope with outflow cavities. There is independent evidence that most of the sources which are not fit by the model are associated with ultracompact HII regions and are thus more evolved. We find that, in general, the diverse 20 micron morphology of MYSOs can be attributed to warm dust in the walls of outflow cavities seen at different inclinations. This implies that the warm dust in the outflow cavity walls dominates the Q-band emission of MYSOs. In turn, this emphasises that outflows are an ubiquitous feature of massive star formation.
description: Accepted for publication in A&A. The images in this version have been compressed. A high resolution version is available on request
SourceVis: Collaborative software visualization for co-located environments
Creators: name: Anslow, C.
name: Marshall, S.
name: Noble, J.
name: Biddle, R.
Publisher: name: IEEE
Year: 2013

description: Most software development tools and applications are designed from a single-user perspective and are bound to the desktop and Integrated Development Environments (IDEs). These tools and applications make it hard for developers to analyse and interact with software artifacts collaboratively. We present SourceVisa multi-user collaborative software visualization application for use on large multi-touch tables. We describe the design and visualization features of SourceVis, present findings from a user study, and discuss the implications for building collaborative software visualization applications.
Follow that Sketch: Lifecycles of Diagrams and Sketches in Software Development.
Creators: name: Walny, Jagoda
name: Haber, Jonathan
name: Doerk, Marian
name: Sillito, Jonathan
name: Carpendale, Sheelagh
Publisher: name: IEEE
Year: 2011

description: Informal visualization in the form of sketching and diagramming has long been an established practise of professionals working in the fields of design, architecture, and engineering. Less is known, however, about the sketching and diagramming practices of computer scientists and software developers. Through a series of interviews with computer science researchers who develop software, we probed the purpose, contexts, and media in which they created and re-created sketches and diagrams, and the ways in which these informal visualizations evolved over time. Through our analysis we created visualizations of the observed sketching and diagramming lifecycles, which can contribute to a better understanding of the roles of sketching and diagramming in software development.
Detection of HF emission from the Orion Bar
Creators: name: van der Tak, F. F. S.
name: Ossenkopf, V.
name: Nagy, Z.
name: Faure, A.
name: Roellig, M.
name: Bergin, E. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The clumpy density structure of photon-dominated regions is well established, but the physical properties of the clumps and of the surrounding interclump medium are only approximately known. The aim of this paper is to constrain the physical and chemical conditions in the Orion Bar, a prototypical nearby photon-dominated region. We present observations of the HF J=1-0 line, which appears in emission toward the Orion Bar, and compare the brightness of the line to non-LTE radiative transfer calculations. The large width of the HF line suggests an origin of the emission in the interclump gas, but collisional excitation by H2 in the interclump gas underpredicts the observed line intensity by factors of 3-5. In contrast, an origin of the line in the dense clumps requires a density of ~10^9 cm^-3, 10-100 times higher than previous estimates, which is unlikely. However, electron impact excitation reproduces our observations for T = 100 K and n(e) = 10 cm^-3, as expected for the interclump gas. We conclude that HF emission is a signpost of molecular gas with a high electron density. Similar conditions may apply to active galactic nuclei where HF also appears in emission.
description: Accepted for publication in A&A; 4 pages, 1 figure
Charge transport in chiral solids as a possible tool in search of dark matter signals
Creators: name: Rogatko, Marek
name: Wysokinski, Karol I.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: As the existing techniques to directly detect dark matter particles in laboratory experiments continue to produce negative signals, the research community considers novel approaches including those relying on condensed matter systems with non-trivial quantum properties. For example, finding signatures of dark matter in transport characteristics of solids would be an important step on the road to detect this illusive component of the mass of our Universe. As a first step in this direction we have recently derived the modified kinetic equation taking into account two coupled $U(1)$-gauge fields, one being the standard Maxwell electromagnetic field and other corresponding to the dark sector. The resulting Boltzmann kinetic equation is modified by the Berry curvature which couples to both visible and dark sector gauge fields. The linear and nonlinear longitudinal and/or Hall currents in topological matter may signal the existence of dark particle induced electromagnetic fields. The usage of appropriately designed resonant cavity to enhance the electric field may help to reach the goal. The conservative estimates show that the technique should have the sensitivity of the order of $10^{-9}$ or better and may help to partially fill the gap between XENON1T and haloscope experiments.
description: 25 pages. 2 figures Revtex, to be published in Phys.Rev.D15
Teaching Practice Using ChatGPT in Higher Education
Creators: name: anonymous, anonymous
Publisher: name: Zenodo
Year: 2023
Subjects: ChatGPT
Teaching in Higher Education
Knowledge Sharing

description: Supplementary Material for Teaching Practice Using ChatGPT in Higher Education
description: Supplementary Material for the Teaching Practice Using ChatGPT in Higher Education. ChatGPT is an Artificial Intelligence (AI) chatbot platform developed by OpenAI. Some studies have identified the advantages and disadvantages of using ChatGPT in teaching and knowledge generation in higher education. To identify proposals for using ChatGPT to improve learning and knowledge production in the field of computer science; to identify how ChatGPT is currently being used by professors in the computer science field in the context of learning and knowledge production; and to identify the advantages and disadvantages of using ChatGPT, proposing actions to mitigate them. We have conducted a survey with 86 professors in the Computer Science field in Brazil to collect their perceptions regarding the use of ChatGPT. Our findings reveal that professors in the computer science field are using ChatGPT in content generation and production of teaching material to be used in the classroom, such as practical exercises, slides, assignments, and tests. They also consider that ChatGPT can be used as a mediator of learning, facilitating interaction between students and professors. In the context of knowledge production, professors already use ChatGPT to support the writing of research or articles and to perform automatic summaries. However, according to professors' perceptions, the biggest problem with ChatGPT is that it does not provide bibliographic references for the content provided in queries. 
This repository contains the following files:  survey questions, participant responses, and code in R.
Evaluating Code Clone Genealogies at Release Level: An Empirical Study
Creators: name: Saha, R.K.
name: Asaduzzaman, M.
name: Zibran, M.F.
name: Roy, C.K.
name: Schneider, K.A.
Publisher: name: IEEE
Year: 2010

description: Code clone genealogies show how clone groups evolve with the evolution of the associated software system, and thus could provide important insights on the maintenance implications of clones. In this paper, we provide an in-depth empirical study for evaluating clone genealogies in evolving open source systems at the release level. We develop a clone genealogy extractor, examine 17 open source C, Java, C++ and C# systems of diverse varieties and study different dimensions of how clone groups evolve with the evolution of the software systems. Our study shows that majority of the clone groups of the clone genealogies either propagate without any syntactic changes or change consistently in the subsequent releases, and that many of the genealogies remain alive during the evolution. These findings seem to be consistent with the findings of a previous study that clones may not be as detrimental in software maintenance as believed to be (at least by many of us), and that instead of aggressively refactoring clones, we should possibly focus on tracking and managing clones during the evolution of software systems.
The Impact of Negative Game Reviews and User Comments on Player Experience
Creators: name: Livingston, I.J.
name: Nacke, L.E.
name: Mandryk, R.L.
Publisher: name: ACM
Year: 2011

description: Game reviews and player ratings have an effect on the commercial success of games. They are used extensively by game developers to gauge the success of their titles and by potential buyers to make more informed purchase decisions. However, their potential influence on player experience remains uncertain. We investigated how game reviews and user comments influence players' affective states and experiences during game play. We found that both professional reviews and user comments (especially the negative comments) affected experience measured through game ratings, and that this effect was not mediated by changes in players' moods. Our results are important to the game industry because of the meaningful negative effect that user and critic comments can have on individual player experience and the resulting commercial success of a game.
VLT/X-shooter observations of the low-metallicity blue compact dwarf galaxy PHL 293B including a luminous blue variable star
Creators: name: Izotov, Y. I.
name: Guseva, N. G.
name: Fricke, K. J.
name: Henkel, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: (abridged) We present VLT/X-shooter spectroscopic observations in the wavelength range 3000-23000A of the extremely metal-deficient blue compact dwarf (BCD) galaxy PHL 293B containing a luminous blue variable (LBV) star. We determine abundances of N, O, Ne, S, Ar, and Fe and study the properties of the LBV from the fluxes and widths of broad emission lines. We derive an interstellar oxygen abundance of 12+log O/H = 7.71+/-0.02, which is in agreement with previous determinations. The observed fluxes of narrow Balmer, Paschen and Brackett hydrogen lines correspond to the theoretical recombination values after correction for extinction with a single value C(Hbeta) = 0.225. This implies that the star-forming region observed in the optical range is the only source of ionisation and there is no additional source of ionisation that is seen in the NIR range but is hidden in the optical range. For the LBV star in PHL 293B we find broad emission with P Cygni profiles in several Balmer hydrogen emission lines and for the first time in several Paschen hydrogen lines and in several HeI emission lines, implying temporal evolution of the LBV on a time scale of 8 years. The Halpha luminosity of the LBV star is by one order of magnitude higher than the one obtained for the LBV star in NGC 2363=Mrk 71 which has a slightly higher metallicity 12+logO/H = 7.87. The terminal velocity of the stellar wind in the low-metallicity LBV of PHL293B is high, ~800 km/s, and is comparable to that seen in spectra of some extragalactic LBVs during outbursts. We find that the averaged terminal velocities derived from the Paschen and HeI emission lines are by some ~40-60 km/s lower than those derived from the Balmer emission lines. This probably indicates the presence of the wind accelerating outward.
description: 10 pages, 4 figures, published in Astronomy and Astrophysics
Quaternion Octonion Reformulation of Grand Unified Theories
Creators: name: Pushpa
name: Bisht, P. S.
name: Li, Tianjun
name: Negi, O. P. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this paper, Grand Unified theories are discussed in terms of quaternions and octonions by using the relation between quaternion basis elements with Pauli matrices and Octonions with Gell Mann λmatrices. Connection between the unitary groups of GUTs and the normed division algebra has been established to re-describe the SU(5)gauge group. We have thus described the SU(5)gauge group and its subgroup SU(3)_{C}\times SU(2)_{L}\times U(1) by using quaternion and octonion basis elements. As such the connection between U(1) gauge group and complex number, SU(2) gauge group and quaternions and SU(3) and octonions is established. It is concluded that the division algebra approach to the the theory of unification of fundamental interactions as the case of GUTs leads to the consequences towards the new understanding of these theories which incorporate the existence of magnetic monopole and dyon.
The Effects of Intended Use on Target Acquisition
Creators: name: Mandryk, R. L.
name: Lough, C.
Publisher: name: ACM
Year: 2011

description: Fitts's Law has been used extensively in HCI to describe 2D targeting; however, the controlled tasks generally used neglect aspects of real-world pointing, including how the intended use of a target affects its acquisition. We studied aiming to a target in four tasks requiring varying precision after acquisition. Our results present the first evidence that the intended use of a target affects its acquisition in terms of movement time and motion kinematics for computer aiming. Important for researchers who model 2D targeting, our results also have particular impact for HCI research that uses motion kinematics.
Pump-induced terahertz conductivity response and peculiar bound state in Mn3Si2Te6
Creators: name: Wu, Qiong
name: Yin, Qiangwei
name: Zhang, Sijie
name: Hu, Tianchen
name: Wu, Dong
name: Yue, Li
name: Li, Bohan
name: Xu, Shuxiang
name: Li, Rongsheng
name: Liu, Qiaomei
name: Lei, Hechang
name: Dong, Tao
name: Wang, Nanlin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the significant enhancement on ultrafast terahertz optical conductivity and the unexpected formation of a polaronic-like state in semiconductor Mn3Si2Te6 at room temperature. With the absorption of pump photons, the low-frequency terahertz photoconductivity spectrum exhibits a significant rise, quickly forming a broad peak and subsequently shifting to higher energy. The short-lived nature of the broad peak, as well as the distribution of optical constants, strongly points towards a transient polaron mechanism. Our study not only provides profound insights into the remarkable photoelectric response of Mn3Si2Te6 but also highlights its significant potential for future photoelectric applications.
Variable Stars in Large Magellanic Cloud Globular Clusters I: NGC 1466
Creators: name: Kuehn, Charles A.
name: Smith, Horace A.
name: Catelan, Márcio
name: Pritzl, Barton J.
name: De Lee, Nathan
name: Borissova, Jura
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This is the first in a series of papers studying the variable stars in Large Magellanic Cloud globular clusters. The primary goal of this series is to better understand how the RR Lyrae stars in Oosterhoff-intermediate systems compare to those in Oosterhoff I/II systems. In this paper we present the results of our new time-series BV photometric study of NGC 1466. A total of 62 variables were identified in the cluster, of which 16 are new discoveries. The variables include 30 RRab stars, 11 RRc's, 8 RRd's, 1 candidate RR Lyrae, 2 long-period variables, 1 potential anomalous Cepheid, and 9 variables of undetermined classification. We present photometric parameters for these variables. For the RR Lyrae stars physical properties derived from Fourier analysis of their light curves are presented. The RR Lyrae stars were used to determine a reddening-corrected distance modulus of (m-M)0 = 18.43 +/- 0.15. We discuss several different indicators of Oosterhoff type and find NGC 1466 to be an Oosterhoff-intermediate object.
description: 14 pages, 11 figures, accepted by AJ
Target Assistance for Subtly Balancing Competitive Play
Creators: name: Bateman, S.
name: Mandryk, R. L.
name: Stach, T.
name: Gutwin, C.
Publisher: name: ACM
Year: 2011

description: In games where skills such as targeting are critical to winning, it is difficult for players with different skill levels to have a competitive and engaging experience. Although several mechanisms for accommodating different skill levels have been proposed, traditional approaches can be too obvious and can change the nature of the game. For games involving aiming, we propose the use of target assistance techniques (such as area cursors, target gravity, and sticky targets) to accommodate skill imbalances. We compared three techniques in a study, and found that area cursors and target gravity significantly reduced score differential in a shooting-gallery game. Further, less skilled players reported having more fun when the techniques helped them be more competitive, and even after they learned assistance was given, felt that this form of balancing was good for group gameplay. Our results show that target assistance techniques can make target-based games more competitive for shared play.
title: Defining the Metaverse: A Systematic Literature Review
Creators: name: Ritterbusch, Georg David
name: Teichmann, Malte Rolf
Publisher: name: Universitätsverlag Potsdam
Year: 2023
Subjects: subject: 004 Datenverarbeitung; Informatik

description: The term Metaverse is emerging as a result of the late push by multinational technology conglomerates and a recent surge of interest in Web 3.0, Blockchain, NFT, and Cryptocurrencies. From a scientific point of view, there is no definite consensus on what the Metaverse will be like. This paper collects, analyzes, and synthesizes scientific definitions and the accompanying major characteristics of the Metaverse using the methodology of a Systematic Literature Review (SLR). Two revised definitions for the Metaverse are presented, both condensing the key attributes, where the first one is rather simplistic holistic describing “a three-dimensional online environment in which users represented by avatars interact with each other in virtual spaces decoupled from the real physical world”. In contrast, the second definition is specified in a more detailed manner in the paper and further discussed. These comprehensive definitions offer specialized and general scholars an application within and beyond the scientific context of the system science, information system science, computer science, and business informatics, by also introducing open research challenges. Furthermore, an outlook on the social, economic, and technical implications is given, and the preconditions that are necessary for a successful implementation are discussed.
description: Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe; 159
CK_Emotion in Wittgenstein.docx A sketch of a theory of emotion
Creators: name: Kokkiou, Chara
Publisher: name: figshare
Year: 2020
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: 220313 Philosophy of Language
subject: 220310 Phenomenology

description: The current study examines the language of verbal and nonverbal communication in Wittgenstein, using fear and pride from a first- and third-person standpoint as a case-study and focusing on passages from later Wittgenstein: the Philosophical Investigations (PI) and the Remarks on the Philosophy of Psychology (RPP). The purpose of this paper is to offer a re-reading of Wittgenstein on emotions and, more broadly, a sketch of Wittgenstein’s theory of emotions. Wittgenstein seems to create a thread that weaves together emotional experiences as publicly manifested psychological phenomena and inner mental states by mapping out ‘forms of life’ and implicitly mitigating the problem of mind-body dualism.
On the Maximum Energy Release from Formation of Static Compact Objects
Creators: name: Mitra, A.
name: Singh, K. K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Type II Supernova 1987A (SN 1987A), observed in 1987, released an energy of \mbox{$Q \approx 3 \times 10^{53}$ erg}}. This huge energy is essentially the magnitude of gravitational potential or self-gravitational energy (PE) of a new born cold neutron star having a gravitational compactness or redshift $z_b \approx 0.15$. One may wonder what could be the upper limit on the amount of energy that might be released with the formation of a cold Ultra Compact Object (UCO) with an arbitrary high $z_b$. Accordingly, here, for the first time, we obtain an analytical expression for the PE of a homogeneous general relativistic UCO assuming it to be cold and static. It is found that the PE of a homogeneous UCO of mass $M$ may exceed Mc$^2$ and be as large as 1.34 Mc$^2$. This result, though surprising, follows from an \textit{exact and correct} analytical calculation based on the standard General Theory of Relativity (GTR). Further, UCOs supported by tangential stresses may be inhomogeneous and much more massive than neutron stars with PE $\sim$ 2.1 Mc$^2$ Thus, in principle, formation of an UCO of a few solar masses ($M_\odot$) might release an energy $Q\sim10^{55}$ erg.
description: 8 Pages, 1 Figure, Galaxies 2023, 11, 116