cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Influence of Landau-level mixing on Wigner crystallization in graphene
Creators: name: Zhang, C. -H.
name: Joglekar, Yogesh N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Graphene, with its massless linearly-dispersing carriers, in the quantum Hall regime provides an instructive comparison with conventional two-dimensional (2D) systems in which carriers have a nonzero band mass and quadratic dispersion. We investigate the influence of Landau level mixing in graphene on Wigner crystal states in the $n^\mathrm{th}$ Landau level obtained using single Landau level approximation. We show that the Landau level mixing does not qualitatively change the phase diagram as a function of partial filling factor $ν$ in the $n^\mathrm{th}$ level. We find that the inter-Landau level mixing, quantified by relative occupations of the two Landau levels, $ρ_{n+1}/ρ_{n}$, oscillates around 2% and, in general, remains small ($< 4%$) irrespective of the Landau level index $n$. Our results show that the single Landau level approximation is applicable in high Landau levels, even though the energy gap between the adjacent Landau levels vanishes.
description: 6 pages, 3 figures
Chiral state conversion in a levitated micromechanical oscillator with in situ control of parameter loops
Creators: name: Yin, Peiran
name: Luo, Xiaohui
name: Zhang, Liang
name: Lin, Shaochun
name: Tian, Tian
name: Li, Rui
name: Wang, Zizhe
name: Duan, Changkui
name: Huang, Pu
name: Du, Jiangfeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Physical systems with gain and loss can be described by a non-Hermitian Hamiltonian, which is degenerated at the exceptional points (EPs). Many new and unexpected features have been explored in the non-Hermitian systems with a great deal of recent interest. One of the most fascinating features is that, chiral state conversion appears when one EP is encircled dynamically. Here, we propose an easy-controllable levitated microparticle system that carries a pair of EPs and realize slow evolution of the Hamiltonian along loops in the parameter plane. Utilizing the controllable rotation angle, gain and loss coefficients, we can control the structure, size and location of the loops in situ. We demonstrate that, under the joint action of topological structure of energy surfaces and nonadiabatic transitions (NATs), the chiral behavior emerges both along a loop encircling an EP and even along a straight path away from the EP. This work broadens the range of parameter space for the chiral state conversion, and proposes a useful platform to explore the interesting properties of exceptional points physics.
description: 7pages,6 figures
Immunoassays for two quaternary ammonium compounds, benzyldimethyldodecylammonium chloride (BDD12AC) and didecyldimethylammonium chloride (DDAC)
Creators: name: Bull, Jennifer Patricia
Publisher: name: University of British Columbia
Year: 2009

description: A competitive enzyme-linked immunosorbent assay (CELISA), based on polyclonal antibodies, was developed to measure benzyldimethyldodecylammonium chloride (BDD₁₂AC), a component of benzalkonium chloride (BAK). The polyclonal antibodies recognized free benzyldimethyldodecylammonium bromide (BDD₁₂AB), with a 50% inhibition (IC₅₀) of 0.66 µg/mL and a detection limit of 0.043 µg/mL. The two other components of BAK, benzyldimethyltetradecylammonium chloride (BDT₁₄AC) and benzyldimethylhexadecyl-ammonium chloride (BDH₁₆AC), as well as other alkyldimethylbenzylammonium compounds (ADBACs), were recognized to varying degrees by the antibodies. The antibodies also recognized a commercial BAK compound (77% C₁₂: 23% C₁₄). The antibodies cross-reacted minimally with other compounds such as fatty acids and alcohols, amino acids, amines, and short-chain quaternary ammonium compounds. CELISA and HPLC were used to quantify BDD₁₂AB and BAK (Aldrich) spikes in milk solutions. BDD₁₂AC was also measured in five commercial products containing BAK, using both analyses. HPLC analysis correlated well with CELISA analysis for these commercial products. CELISAs were also developed for didecyldimethylammonium chloride (DDAC) using three novel haptens. The three resulting antisera recognized DDAC to different degrees, with IC₅₀'s ranging from 0.05 µg/mL to 17.2 µg/mL. Cross-reactivity with compounds representing DDAC's different epitopes were observed for the three sera at varying degrees. The antisera also showed varying degrees of susceptibility to detergent effects, where one serum cross-reacted more with sodium dodecyl sulfate (SDS) than DDAC. Performance of one of the sera raised against DDAC was a marked improvement over a previously described anti-DDAC serum, produced by Chen et al. (1995). This new antiserum could be used to detect DDAC in environmental samples since the IC₅₀ is 50 ppb, well under the discharge limit of 700 ppb.
Top-gated graphene field-effect-transistors formed by decomposition of SiC
Creators: name: Wu, Y. Q.
name: Ye, P. D.
name: Capano, M. A.
name: Xuan, Y.
name: Sui, Y.
name: Qi, M.
name: Cooper, J. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Top-gated, few-layer graphene field-effect transistors (FETs) fabricated on thermally-decomposed semi-insulating 4H-SiC substrates are demonstrated. Physical vapor deposited SiO2 is used as the gate dielectric. A two-dimensional hexagonal arrangement of carbon atoms with the correct lattice vectors, observed by high-resolution scanning tunneling microscopy, confirms the formation of multiple graphene layers on top of the SiC substrates. The observation of n-type and p-type transition further verifies Dirac Fermions unique transport properties in graphene layers. The measured electron and hole mobility on these fabricated graphene FETs are as high as 5400 cm2/Vs and 4400 cm2/Vs respectively, which are much larger than the corresponding values from conventional SiC or silicon.
A Co-chain map for the G-invariant de Rham complex
Creators: name: Anderson, I. M.
name: Fels, M. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58D19

description: We characterize Lie group actions for which there exists, at least locally, an evaluation map that defines a cochain map from the differential complex of invariant forms on a manifold to the De Rham complex for the quotient.
description: 9 pages
Divide and Conquer - Organizing Component-based Adaptation
Creators: name: Scholz, Ulrich
name: Rouvoy, Romain
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: This paper introduces a divide and conquer approach for organizing
  the adaptation of distributed applications in a potentially large number of
  interacting middleware instances.  In such an environment, a centralistic
  and static adaptation reasoning i) is inadequate and ii)
  gives the same priority to all applications.  The divide and conquer method
  aims at minimizing the interference between running applications, allowing
  users to weight the priority of 
  applications, and organizing the
  adaptation and the reasoning about the adaptation in a decentralized and
  flexible way.
description: Electronic Communications of the EASST, Volume 11: Context-aware Adaption Mechanisms for Pervasive and Ubiquitous Services
The Accelerating Expansion of the Universe and Torsion Energy
Creators: name: Wanas, M. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the present work, it is shown that the problem of the accelerating expansion of the Universe can be directly solved by applying Einstein geometrization philosophy in a wider geometry. The geometric structure used to fulfil the aim of the work is a version of Absolute Parallelism geometry in which curvature and torsion are simultaneously non vanishing objects. It is shown that, while the energy corresponding to the curvature of space- time gives rise to an attractive force, the energy corresponding to the torsion indicates the presence of a repulsive force. A fine tuning parameter can be adjusted to give the observed phenomena.
description: 10 pages, Latex file
"InstantSocial" – Implementing a Distributed Mobile Multi-user Application with Adaptation Middleware
Creators: name: Fraga, Luí­S
name: Hallsteinsen, Svein
name: Scholz, Ulrich
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: In this position paper we explore how new capabilites of mobile devices could be used to setup distributed multi-user mobile applications with potentially high interest for end users. We describe an example of such an application by transposing Internet social network trends and principles to a mobile ad hoc environment. Then we present a tentative design and implentation sketch of this application in terms of the MUSIC context-aware adaptation middleware we are currently developing.
description: Electronic Communications of the EASST, Volume 11: Context-aware Adaption Mechanisms for Pervasive and Ubiquitous Services
Glioblastoma Multiforme Patient Survival Prediction
Creators: name: Rajput, Snehal
name: Agravat, Rupal
name: Roy, Mohendra
name: Raval, Mehul S
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Applications (stat.AP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Glioblastoma Multiforme is a very aggressive type of brain tumor. Due to spatial and temporal intra-tissue inhomogeneity, location and the extent of the cancer tissue, it is difficult to detect and dissect the tumor regions. In this paper, we propose survival prognosis models using four regressors operating on handcrafted image-based and radiomics features. We hypothesize that the radiomics shape features have the highest correlation with survival prediction. The proposed approaches were assessed on the Brain Tumor Segmentation (BraTS-2020) challenge dataset. The highest accuracy of image features with random forest regressor approach was 51.5\% for the training and 51.7\% for the validation dataset. The gradient boosting regressor with shape features gave an accuracy of 91.5\% and 62.1\% on training and validation datasets respectively. It is better than the BraTS 2020 survival prediction challenge winners on the training and validation datasets. Our work shows that handcrafted features exhibit a strong correlation with survival prediction. The consensus based regressor with gradient boosting and radiomics shape features is the best combination for survival prediction.
description: 10 pages, 9 figures
Advances in Constraining Intrinsic Alignment Models with Hydrodynamic Simulations
Creators: name: Samuroff, S.
name: Mandelbaum, R.
name: Blazek, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use galaxies from the IllustrisTNG, MassiveBlack-II and Illustris hydrodynamic simulations to investigate the behaviour of large scale galaxy intrinsic alignments. Our analysis spans four redshift slices over the approximate range of contemporary lensing surveys $z=0-1$. We construct comparable weighted samples from the three simulations, which we then analyse using an alignment model that includes both linear and quadratic alignment contributions. Our data vector includes galaxy-galaxy, galaxy-shape and shape-shape projected correlations, with the joint covariance matrix estimated analytically. In all of the simulations, we report non-zero IAs at the level of several $σ$. For a fixed lower mass threshold, we find a relatively strong redshift dependence in all three simulations, with the linear IA amplitude increasing by a factor of $\sim 2$ between redshifts $z=0$ and $z=1$. We report no significant evidence for non-zero values of the tidal torquing amplitude, $A_2$, in TNG, above statistical uncertainties, although MassiveBlack-II favours a moderately negative $A_2\sim-2$. Examining the properties of the TATT model as a function of colour, luminosity and galaxy type (satellite or central), our findings are consistent with the most recent measurements on real data. We also outline a novel method for constraining the TATT model parameters directly from the pixelised tidal field, alongside a proof of concept exercise using TNG. This technique is shown to be promising, although the comparison with previous results obtained via other methods is non-trivial.
description: 28 pages, 18 Figures; submitted to MNRAS
The Star Formation History of the Universe as Revealed by Deep Radio Observations
Creators: name: Seymour, N.
name: Dwelly, T.
name: Moss, D.
name: McHardy, I.
name: Zoghbi, A.
name: Rieke, G.
name: Page, M.
name: Hopkins, A.
name: Loaring, N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Discerning the exact nature of the sub-mJy radio population has been historically difficult due to the low luminosity of these sources at most wavelengths. Using deep ground based optical follow-up and observations from the Spitzer Space Telescope we are able to disentangle the radio-selected Active Galactic Nuclei (AGN) and Star Forming Galaxy (SFG) populations for the first time in a deep multi-frequency VLA/MERLIN Survey of the 13^H XMM-Newton/Chandra Deep Field. The discrimination diagnostics include radio morphology, radio spectral index, radio/near-IR and mid-IR/radio flux density ratios. We are now able to calculate the extragalactic Euclidean normalised source counts separately for AGN and SFGs. We find that while SFGs dominate at the faintest flux densities and account for the majority of the up-turn in the counts, AGN still make up around one quarter of the counts at ~5 uJy (1.4 GHz). Using radio luminosity as an unobscured star formation rate (SFR) measure we are then able to examine the comoving SFR density of the Universe up to z=3 which agrees well with measures at other wavelengths. We find a rough correlation of SFR with stellar mass for both the sample presented here and a sample of local radio-selected SFGs from the 6df-NVSS survey. This work also confirms the existence of, and provides alternative evidence for, the evolution of distribution of star formation by galaxy mass: ``downsizing''. As both these samples are SFR-selected, this result suggests that there is a maximum SFR for a given galaxy that depends linearly on its stellar mass. The low ``characteristic times'' (inverse specific SFR) of the SFGs in our sample are similar to those of the 6dF-NVSS sample, implying that most of these sources are in a current phase of enhanced star formation.
description: 15 pages, 10 figures, MNRAS, in press, Figure A1 included as gif to save space, paper with full resolution figure available here: http://web.ipac.caltech.edu/staff/seymour/13hr_sfr_final.pdf
Survey: Agent-based Middlewares for Context Awareness
Creators: name: Sahli, Nabil
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: In the last few years, many middlewares for context awareness have claimed to be agent-based. In this paper, we make a survey on the most known frameworks. We classify them according to their level of conformity to the agent paradigm and we discuss the usefulness of agents in these frameworks. Based on this survey, we enumerate several advantages of using agents in context-aware middlewares and give illustrative examples. We also point to the weakness of existing frameworks and identify challenges to be addressed.
description: Electronic Communications of the EASST, Volume 11: Context-aware Adaption Mechanisms for Pervasive and Ubiquitous Services
Transcription of a description of material culture items
Creators: name: Parker, Verdena
name: Escamilla, Ramón
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-100411-01: Transcription of Verdena's description of material culture items in her home (file VP-101010-02), from 6:19 to the end of the text at 6:53.
International Energy Agency World Energy Prices, 1970-2018
IEA World Energy Prices
Creators: name: International Energy Agency
Publisher: name: UK Data Service
Year: 2019

description:
The International Energy Agency (IEA) World Energy Prices database includes annual energy prices data for more than 120 countries, for gasoline, automotive diesel, electricity and other products.

Energy prices are a significant part of our domestic expenditures, play an important role for industrial competitiveness and influence energy consumption patterns. End-use prices-paid by final consumers- are affected by movements incommodity markets as well as policy decisions. As countries move away from regulated pricing, monitoring energy end-use prices around the world has become increasingly important for analysts and policy makers. World Energy Prices aims to serve this purpose by being the most reliable database that uses official sources with transparent and documented methodologies for each country.
Explicit Action of E7(7) on N=8 Supergravity Fields
Creators: name: Kallosh, Renata
name: Soroush, Masoud
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an explicit, exact to all orders in gravitational coupling E7(7) symmetry transformations of on-shell N=8 supergravity fields in the gauge with 70 scalars in E7(7)/SU(8) coset space, the local SU(8) symmetry being fixed. The non-linear realization of E7(7) includes a field-dependent SU(8) transformation preserving the unitary gauge. We find the conserved Noether-Gaillard-Zumino current of E7(7) symmetry, the linear part of it being a chiral SU(8) symmetry. We comment on the conformal realization of the E7(7) algebra which includes a dilatation operator. We hope that these results can be useful for studies of anomalies/absence of anomalies and the UV behavior of N=8 supergravity.
description: 25 pages, LaTeX, no figures; v2: typos corrected
Context-Aware Adaptation of Mobile Multimedia Presentations
Creators: name: Weiss, Diana
name: Helas, Stefan
name: Martens, Johannes
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: With increasing capabilities of mobile devices, the number of mobile multimedia services grows steadily. Usage of multimedia services and especially the presentation of multimedia content is more challenging in a mobile environment than on stationary devices due to the diversity of mobile devices and their parameters, the sparse resources of the air interface or the changing context.

This position paper introduces an approach for context-aware adaptation of mobile multimedia presentations. For this, a middleware architecture is proposed that performs an automatic and distributed adaptation process: while the server provides a
pre-processing of the content, the client completes the overall adaptation. To support this task, the Adaptation Rule Language (ARL) was developed which is introduced in this paper as well.
description: Electronic Communications of the EASST, Volume 11: Context-aware Adaption Mechanisms for Pervasive and Ubiquitous Services
Voltage from mechanical stress in type-II superconductors: Depinning of the magnetic flux by moving dislocations
Creators: name: Albert, Jaroslav
name: Chudnovsky, E. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Mechanical stress causes motion of defects in solids. We show that in a type-II superconductor a moving dislocation generates a pattern of current that exerts the depinning force on the surrounding vortex lattice. Concentration of dislocations and the mechanical stress needed to produce critical depinning currents are shown to be within practical range. When external magnetic field and transport current are present this effect generates voltage across the superconductor. Thus a superconductor can serve as an electrical sensor of the mechanical stress.
description: 3 pages, 1 figures
Stabilizing current-driven steady flows of 180$^{\circ}$ domain walls in spin valves by interfacial Dzyaloshinskii-Moriya interaction
Creators: name: Du, Jiaxin
name: Li, Mei
name: Lu, Jie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Modulations of interfacial Dzyaloshinskii-Moriya interaction (iDMI) on current-driven dynamics of 180$^{\circ}$ domain walls (180DWs) in long and narrow spin valves (LNSVs) with heavy-metal caplayers are systematically investigated. We focus on LNSVs with in-plane magnetic anisotropy in their free layers. For planar-transverse polarizers (pinned layers of LNSVs), the Walker breakdown can be postponed considerably (practical infinity) by iDMI. More interestingly, the originally unstable traveling mode is also stabilized by iDMI with high saturation velocity thus serves as fast carrier of information. For parallel polarizers, the Walker limit is increased and the corresponding modifications of iDMI to wall velocity in both steady and precessional flows of 180DWs are provided. For perpendicular polarizers, precessional flow of 180DWs is absent due to the stability of stationary mode beyond the modified Walker limit. For LNSVs with perpendicular magnetic anisotropy in their free layers, similar results are obtained. Our findings open new possibilities for developing magnetic nanodevices based on 180DW propagation with low energy consumption and high robustness.
description: 7 pages, 3 fugures
eDanss des basses-terres
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2024

Abstract
title: The poetics and politics of Ovidian intertexts in Statius' Thebaid
Creators: name: Spinelli, Tommaso
Publisher: name: University of St Andrews
Year: 2019

description: This thesis seeks to offer the first in-depth exploration of the extent and the significance of Ovidian intertexts in Statius’ Thebaid, with particular emphasis on the ways they interact with the readers’ perception of the material and sociocultural context of Flavian Rome. By studying the Thebaid’s post-Ovidian treatment of the landscape (Chapter One), of the heroes (Chapter Two), and of the divine (Chapter Three), I suggest that the poem maintains the poetic and political significance of Ovid’s Theban saga as a critical rewriting of the Aeneid and further develops it into a new reflection on the fissures of the Augustan foundational myths and their applicability to Flavian Rome. This exploration of the contrastive Virgilian-Ovidian intertextuality shaping the Thebaid’s narratives offers new insights not only into Statius’ competitive renegotiation of his relationship with both the Aeneid and the Metamorphoses, but also into the poem’s sophisticated engagement with the most important social, political and religious issues of its time.
Integration of Ontological Scene Representation and Logic-Based Reasoning for Context-Aware Driver Assistance Systems
Creators: name: Fuchs, Simone
name: Rass, Stefan
name: Kyamakya, Kyandoghere
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: Co-operative driver assistance systems share information about their surrounding with each other, thus enhancing their knowledge and their performance. For successful information  exchange and interpretation, a common domain understanding is needed. This paper first presents an ontology-based  context-model for driving scene description, including next to spatio-temporal components also additional context information like traffic signs, state of the driver and the own-vehicle. For traffic rules, we integrate the ontological scene description with a logic programming  environment, to enable complex and powerful reasoning on the given information. The proposed ontology is discussed with respect to a set of validation criteria. For integration with logic programming a prototypical development of an overtaking assistant is shown to demonstrate the feasibility of the approach.
description: Electronic Communications of the EASST, Volume 11: Context-aware Adaption Mechanisms for Pervasive and Ubiquitous Services
D1.7:  Exploitation Plan
Creators: name: Mieslinger, Theresa
Publisher: name: Zenodo
Year: 2022

description: Work package in charge

WP1, Project Office

Executive summary

Building up on the communication and dissemination plan, we formulate a first plan for the exploitation of project results in nextGEMS. The major target group for the results uptake are the stakeholders that we have defined as the nextGEMS near and far field groups. The nextGEMS’ nearfield stakeholder groups are the ‘Users’, ‘Technologists’ and the ‘Earthsystem Science Community’. These groups are invited to codesignthe Science Challenge Problems used to structure the Knowledge Coproduction component of nextGEMS Hackathons. At the heart of the exploitation activities we find the project meetings in form of Hackathons tobe most valuable in exploiting model development and emerging results among the nearfield groups.The nextGEMS’ farfield stakeholder groups are the ‘Broader User Community’, the ‘General Public and Media’, and the ‘Publicpolicy Community’, among which the climate policymakers and the younger generation as target group for capacity building around Next Generation Earth System Models will play an essential role. Finally, nextGEMS also takes into consideration about the exploitation activities to sustain theproject output beyond the lifetime of the Project.

Conclusion & Results

The exploitation plan described in this first report defines the measures that will be taken in the project to exploit project results in a sustainable manner and make them available during the development of the project and for the future research. The plan will help the nextGEMS consortium as well as the European Commission to ensure the adequate and timely planning of exploitation activities within this specific field. This is a living document and will be updated
Towards Self-evolving Context-aware Services
Creators: name: Autili, Marco
name: Di Benedetto, Paolo
name: Inverardi, Paola
name: Tamburri, Damien
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: The introduction of new communication infrastructures such as Beyond 3rd Generation
(B3G) and the widespread usage of small computing devices are rapidly
changing the way we use and interact with technology to perform everyday tasks.
Ubiquitous networking empowered by B3G networking makes it possible for mobile
users to access networked software services across continuously changing heterogeneous
infrastructures by resource-constrained devices. Heterogeneity and devices'
limitedness, create serious problems for the development and dynamic deployment
of mobile applications that are able to run properly on the execution context and
consume services matching with the users' expectations. Furthermore, the everchanging
B3G environment calls for applications that self-evolve according to context
changes. Out of these problems, self-evolving adaptable applications are increasingly
emerging in the software community. In this paper we describe how
CHAMELEON, a declarative framework for tailoring adaptable applications, is being
used for tackling adaptation and self-evolution within the IST PLASTIC project.
description: Electronic Communications of the EASST, Volume 11: Context-aware Adaption Mechanisms for Pervasive and Ubiquitous Services
Transcription of a description of material culture items
Creators: name: Parker, Verdena
name: Escamilla, Ramón
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-090411-10: Transcription of Verdena's description of material culture items in her home (file VP-101010-02), from 5:00 to 6:19.
Mixing of two-electron spin states in a semiconductor quantum dot
Creators: name: Badescu, S. C.
name: Reinecke, T. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We show that the low lying spin states of two electrons in a semiconductor quantum dot can be strongly mixed by electron-electron asymmetric exchange. This mixing is generated by the coupling of electron spin to its orbital motion and to the relative orbital motion of the two electrons. The asymmetric exchange can be as large as 50% of the isotropic exchange, even for cylindrical quantum dots. The resulting spin mixing contributes to understanding spin dynamics in quantum dots, including light polarization reversal.
Early dark energy is not excluded by current large-scale structure data
Creators: name: Smith, Tristan L.
name: Poulin, Vivian
name: Bernal, José Luis
name: Boddy, Kimberly K.
name: Kamionkowski, Marc
name: Murgia, Riccardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit the impact of early dark energy (EDE) on galaxy clustering using BOSS galaxy power spectra, analyzed using the effective field theory (EFT) of large-scale structure (LSS), and anisotropies of the cosmic microwave background (CMB) from Planck. Recent studies found that these data place stringent constraints on the maximum abundance of EDE allowed in the Universe. We argue here that their conclusions are a consequence of their choice of priors on the EDE parameter space, rather than any disagreement between the data and the model. For example, when considering EFT-LSS, CMB, and high-redshift supernovae data we find the EDE and $Λ$CDM models can provide statistically indistinguishable fits ($Δχ^2 = 0.12$) with a relatively large value for the maximum fraction of energy density in the EDE ($f_{\rm ede} = 0.09$) and Hubble constant ($H_0 = 71$ km/s/Mpc) in the EDE model. Moreover, we demonstrate that the constraining power added from the inclusion of EFT-LSS traces to the potential tension between the power-spectrum amplitudes $A_s$ derived from BOSS and from Planck that arises even within the context of $Λ$CDM. Until this is better understood, caution should be used when interpreting EFT-BOSS+Planck constraints to models beyond $Λ$CDM. These findings suggest that EDE still provides a potential resolution to the Hubble tension and that it is worthwhile to test the predictions of EDE with future data-sets and further study its theoretical possibilities.
description: 8 pages, 3 figures, comments welcome
Magnetic studies of multi-walled carbon nanotube mats: Evidence for the paramagnetic Meissner effect
Creators: name: Zhao, Guo-meng
name: Beeli, Pieder
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report magnetic measurements up to 1200 K on multi-walled carbon nanotube mats using Quantum Design vibrating sample magnetometer. Extensive magnetic data consistently show two ferrromagnetic-like transitions at about 1000 K and 1275 K, respectively. The lower transition at about 1000 K is associated with an Fe impurity phase and its saturation magnetization is in quantitative agreement with the Fe concentration measured by an inductively coupled plasma mass spectrometer. On the other hand, the saturation magnetization for the higher transition phase ($\geq$1.0 emu/g) is about four orders of magnitude larger than that expected from the measured concentration of Co or CoFe, which has a high enough Curie temperature to explain this high transition. We show that this transition at about 1275 K is not consistent with a magnetic proximity effect of Fe-carbon systems and ferromagnetism of any carbon-based materials or magnetic impurities but with the paramagnetic Meissner effect due to the existence of $π$ Josephson junctions in a granular superconductor.
description: 5 pages, 4 figures
Electron attachment to SF6 and lifetimes of SF6- negative ions
Creators: name: Gerchikov, L. G.
name: Gribakin, G. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study the process of low-energy electron capture by the SF6 molecule. Our approach is based on the model of Gauyacq and Herzenberg [J. Phys. B 17, 1155 (1984)] in which the electron motion is coupled to the fully symmetric vibrational mode through a weakly bound or virtual s state. By tuning the two free parameters of the model, we achieve an accurate description of the measured electron attachment cross section and good agreement with vibrational excitation cross sections of the fully symmetric mode. An extension of the model provides a limit on the characteristic time of intramolecular vibrational relaxation in highly-excited SF6-. By evaluating the total vibrational spectrum density of SF6-, we estimate the widths of the vibrational Feshbach resonances of the long-lived negative ion. We also analyse the possible distribution of the widths and its effect on the lifetime measurements, and investigate nonexponential decay features in metastable SF6-.
description: 22 pages, 10 figures, submitted to Phys. Rev. A
The Evolution of the Linux Build System
Creators: name: Adams, Bram
name: De Schutter, Kris
name: Tromp, Herman
name: De Meuter, Wolfgang
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: Software evolution entails more than just redesigning and reimplementing functionality of, fixing bugs in, or adding new features to source code. These evolutionary forces induce similar changes on the software's build system too, with far-reaching consequences on both overall developer productivity as well as software configurability. In this paper we take a look at this phenomenon in the Linux kernel from its inception up until present day. We do this by analysing the kernel's build traces with MAKAO, our re(verse)-engineering framework for build systems. This helps us in detecting interesting idioms and patterns in the dynamic build behaviour. Finding a good balance between obtaining a fast, correct build system and migrating in a stepwise fashion turns out to be the general theme throughout the evolution of the Linux build system.
description: Electronic Communications of the EASST, Volume 8: ERCIM Symposium on Software Evolution 2007
International Remittances, Domestic Sharing, and Income Inequality in Senegal: Supplemental document
Creators: name: Moustapha, Mahamat
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 380110
subject: International economics
classificationCode: 380202
subject: Econometric and statistical methods
classificationCode: 380102
subject: Behavioural economics
classificationCode: 380119
subject: Welfare economics

description: This is the supplementary document for the article "International Remittances, Domestic Sharing, and Income Inequality in Senegal".
The physics potential of a reactor neutrino experiment with Skipper CCDs: Measuring the weak mixing angle
Creators: name: Fernandez-Moroni, Guillermo
name: Machado, Pedro A. N.
name: Martinez-Soler, Ivan
name: Perez-Gonzalez, Yuber F.
name: Rodrigues, Dario
name: Rosauro-Alcaraz, Salvador
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We analyze in detail the physics potential of an experiment like the one recently proposed by the vIOLETA collaboration: a kilogram-scale Skipper CCD detector deployed 12 meters away from a commercial nuclear reactor core. This experiment would be able to detect coherent elastic neutrino nucleus scattering from reactor neutrinos, capitalizing on the exceptionally low ionization energy threshold of Skipper CCDs. To estimate the physics reach, we elect the measurement of the weak mixing angle as a case study. We choose a realistic benchmark experimental setup and perform variations on this benchmark to understand the role of quenching factor and its systematic uncertainties,background rate and spectral shape, total exposure, and reactor antineutrino flux uncertainty. We take full advantage of the reactor flux measurement of the Daya Bay collaboration to perform a data driven analysis which is, up to a certain extent, independent of the theoretical uncertainties on the reactor antineutrino flux. We show that, under reasonable assumptions, this experimental setup may provide a competitive measurement of the weak mixing angle at few MeV scale with neutrino-nucleus scattering.
description: 11 pages, 6 figures
On the Resilience of Classes to Change
Creators: name: Vasa, Rajesh
name: Schneider, Jean-Guy
name: Nierstrasz, Oscar
name: Woodward, Clinton
Publisher: name: European Association of Software Science and Technology
Year: 2008

description: Software systems evolve over time incrementally and sections of code are modified. But, how much does code really change? Lehman's laws suggest that software must be continuously adapted to be useful. We have studied the evolution of several public domain object-oriented software systems and analyzed the rate as well as the amount of change that individual classes undergo as they evolve. Our observations suggest that although classes are modified, the majority of changes are minor and only a small proportion of classes undergo significant modification.
description: Electronic Communications of the EASST, Volume 8: ERCIM Symposium on Software Evolution 2007
Paramecium multimicronucleatum Powers & Mitchell 1910
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Hypotrichea
Oxytrichida
Oxytrichidae
Paramecium
Paramecium multimicronucleatum

description: Paramecium multimicronucleatum Powers & Mitchell, 1910
Distribution. BRAZIL: Paraná River between the Nupelia’s Field Station and the district of Porto São José, São Pedro do Paraná (Buosi et al. 2014 a, b, 2015), (Ad).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 30, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Tidal locking and the gravitational fold catastrophe
Creators: name: Ferroglia, Andrea
name: Fiolhais, Miguel C. N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The purpose of this work is to study the phenomenon of tidal locking in a pedagogical framework by analyzing the effective gravitational potential of a two-body system with two spinning objects. It is shown that the effective potential of such a system is an example of a fold catastrophe. In fact, the existence of a local minimum and saddle point, corresponding to tidally-locked circular orbits, is regulated by a single dimensionless control parameter which depends on the properties of the two bodies and on the total angular momentum of the system. The method described in this work results in compact expressions for the radius of the circular orbit and the tidally-locked spin/orbital frequency. The limiting case in which one of the two orbiting objects is point-like is studied in detail. An analysis of the effective potential, which in this limit depends on only two parameters, allows one to clearly visualize the properties of the system. The notorious case of the Mars' moon Phobos is presented as an example of a satellite that is past the no return point and, therefore, will not reach a stable or unstable tidally-locked orbit.
description: 13 pages, 5 figures
Bounce and wormholes
Creators: name: Pinto-Neto, N.
name: Poulis, F. P.
name: Salim, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate if theories yielding bouncing cosmological models also generate wormhole solutions. We show that two of them present sensible traversable static wormhole solutions, while for the third possibility such solutions are absent.
Understanding Feasibility Study Approach for Packaged Software Implementation by SMEs
Creators: name: Jebreen, Issam
name: Wellington, Robert
name: MacDonell, Stephen G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Software engineering often no longer involves building systems from scratch, but rather integrating functionality from existing software and components or implementing packaged software. Conventional software engineering comprises a set of influential approaches that are often considered good practice, including structured programming, and collecting a complete set of test cases. However, these approaches do not apply well for packaged software (PS) implementation; hence this phenomenon requires independent consideration. To explore PS implementation, we conducted ethnographic studies in packaged software development companies, in particular, to understand aspects of the feasibility study approach for PS implementation. From an analysis of these cases, we conclude that firstly; the analyst has more of a hybrid analyst-sales-marketing role than the analyst in traditional RE feasibility study. Secondly; the use of a live scenario software demonstration in order to convince the client to buy into the PS may lead to increased perceived feasibility and reduced resistance to PS implementation. Thirdly; the assessment criteria that are used to estimate the effort and time needed for PS implementation are new features, level of customization, software 'output', and technical needs. Fourthly; the feasibility study for PS implementation differs strongly from traditional RE as the analyst mainly considers how to deal with requests for modifications to existing functions.
description: 8 Pages, Conference, 1 Figure, 2 Tables
REACH OF DIGITAL MARKETING AMONG UNEDUCATED CUSTOMERS
Creators: name: Dr. Jayaram Kanzal*, Dr. R. G. Saha**, Dr. Tejaswini***,  Dr. Siji K**** & Shwetha S*****
Publisher: name: Zenodo
Year: 2024

description: This study investigates the penetration and effectiveness of digital marketing strategies in reaching and engaging customers with limited formal education. Through primary and secondary research methods, including surveys and a review of existing literature, the study sheds light on the challenges and opportunities of utilizing digital marketing in this segment. Findings reveal valuable insights into preferred information channels, content formats, and persuasive messaging tailored for less-educated audiences. The research concludes with actionable suggestions for marketers to optimize their digital outreach and bridge the existing digital divide.
Casimir piston for massless scalar fields in three dimensions
Creators: name: Edery, Ariel
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the Casimir piston for massless scalar fields obeying Dirichlet boundary conditions in a three dimensional cavity with sides of arbitrary lengths $a,b$ and $c$ where $a$ is the plate separation. We obtain an exact expression for the Casimir force on the piston valid for any values of the three lengths. As in the electromagnetic case with perfect conductor conditions, we find that the Casimir force is negative (attractive) regardless of the values of $a$, $b$ and $c$. Though cases exist where the interior contributes a positive (repulsive) Casimir force, the total Casimir force on the piston is negative when the exterior contribution is included. We also obtain an alternative expression for the Casimir force that is useful computationally when the plate separation $a$ is large.
description: 19 pages,3 figures; references updated and typos fixed to match published version
Experimental Maintenance Painting on Various Bridge Projects
Kentucky Highway Investigative Task 40
Creators: name: Hopwood, Theodore
name: Palle, Sudhir
name: Younce, Rick
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2002
Subjects: subject: Transportation Engineering

description: The Kentucky Transportation Center (KTC) at the University of Kentucky has performed a series of research studies for the Kentucky Transportation Cabinet (KYTC) to monitor various experimental bridge painting projects and conduct investigative work focusing on new paint systems. The research study addressed in this report “Experimental Maintenance Painting On Various Bridge Projects During 1998-2000” Kentucky Highways Investigative Task No: 40 was intended to address experimental projects in fiscal years 1999 and 2000, but was extended to address certain fieldwork and KYTC inspections through December 31, 2000.  KTC/KYTC Paint Team joint efforts in late 1998 into early 1999 centered on the preparation of experimental bridge maintenance painting special notes, preliminary field testing/development of new experimental paint systems and testing of proprietary and KYTC standard specification coatings. The laboratory tests identified candidate coatings systems that were subsequently used in the KYTC experimental bridge maintenance painting projects conducted under this study. Developmental work focused on micaceous iron oxide (MIO) pigmented moisture-cure polyurethane intermediate coatings, organic zinc moisture-cure polyurethane primers and quick- curing moisture-cure polyurethane coatings (primers and top coats) for rapid deployment painting.  The objectives of experimental project monitoring were to: assess the condition of the existing paint on bridge prior to maintenance painting, monitor the project throughout completion, note problems, describe problem resolution, appraise the condition of the final product, and report observations on/conclusions about the project.  This report will begin with a summary of the coatings testing work undertaken by KTC researchers and the KYTC Paint Team. The experimental bridge maintenance painting monitoring work is presented for each bridge in the appendices. The overall results/findings of this research study are contained in the “Conclusions” section of this report.