cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Real-time Soft Shadows on the GPU via Monte Carlo Sampling
Creators: name: Curtis, Aaron
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: GPU
Monte Carlo
ray tracing
real-time rendering
shadow mapping
soft shadows

description: Realistic shadows present a difficult problem in real- time rendering. While techniques for rendering hard edged shadows from point light sources are well established, attempts to incorporate soft shadows typically suffer from inaccuracies or poor performance. Our algorithm makes use of recent advances in GPU randomization to perform Monte Carlo sampling of points on an area light source. Rays are then traced to the sampled points, using the shadow map as a discretized representation of occluders in the scene. The accuracy of this method can be improved through the use of multiple shadow maps, which together are able to better approximate the scene geometry. As with conventional shadow mapping, our method is performed entirely on the GPU, does not require any precomputation, and can handle fully dynamic scenes with arbitrary geometric complexity. The quality of the generated shadows is comparable to that of offline rendering algorithms such as ray tracing, while performance remains real- time, on par with existing techniques.
Warm SiO gas in molecular bullets associated with protostellar outflows
Creators: name: Nisini, B.
name: Codella, C.
name: Giannini, T.
name: Garcia, J. Santiago
name: Richer, J. S.
name: Bachiller, R.
name: Tafalla, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we present the first SiO multiline analysis (from J=2-1 to J=11-10) of the molecular bullets along the outflows of the Class 0 sources L1448-mm and L1157-mm, obtained through observations with IRAM and JCMT. We have computed the main physical parameters in each bullet and compared them with other tracers of warm and dense gas and with models for the SiO excitation in shocks. We find that the bullets close to L1448--mm, associated with high velocity gas, have higher excitation conditions (n(H2) ~ 10^{6} cm^{-3}, T > 500 K) with respect to the L1157 bullets (n(H2) ~1-5 10^{5} cm^{-3}, T ~ 100-300 K). In both the sources, there is a clear evidence of the presence of velocity components having different excitation conditions, with the denser and/or warmer gas associated with the gas at the higher speed. In L1448 the bulk of the emission is due to the high-excitation and high velocity gas, while in L1157 most of the emission comes from the low excitation gas at ambient velocity. The observed velocity-averaged line ratios are well reproduced by shocks with speeds v_s larger than ~ 30 km/s and densities ~ 10^{5} - 10^{6} cm^{-3}. Plane-parallel shock models, however, fail to predict all the observed line profiles and in particular the very similar profiles shown by both low and high excitation lines. The overall observations support the idea that the L1157 clumps are shock interaction events older than the L1448 bullets close to the driving source. In the latter objects, the velocity structure and the variations of physical parameters with the velocity resemble very closely those found in optical/IR jets near the protostar, suggesting that similar launching and excitation mechanisms are also at the origin of collimated jets seen at millimetre wavelengths.
description: 11pages, 9 figures, A&A accepted
title: Мордва Тобольской губернии – Ханты-Мансийского автономного округа – Югры: к вопросу о расселении и численности в 1897–2010 гг.
title: Mordvins of Tobolsk Guberniya – Khanty-Mansi Autonomous Area – Ugra: to the Question of Settlement and Population in 1897–2010
Creators: name: Медведев, Владислав Валентинович
Publisher: name: Издательский центр СурГУ
Year: 2021

description: Сообщества людей необходимо рассматривать в контексте этничности и изучать процессы, протекающие среди конкретных этнических групп при определенных условиях. В рамках статьи объектом исследования станет мордва Ханты-Мансийского автономного округа – Югры. Мордва – один из крупнейших финно-угорских народов России и расселена она далеко за пределами своей исторической родины. Масштабные переселенческие процессы среди народов Урало-Поволжья объясняются насильственной христианизацией, поиском новых / «лучших» территорий для жизни, формированием контактных зон проживания, «советизацией» повседневности и традиционной культуры, комсомольскими стройками, переездами и освоением целины либо участием в разработке нефтяных месторождений.
description: Communities of people need to be considered in the context of ethnicity and to study the processes occurring among specific ethnic groups under some conditions. Within the framework of the article, the object of research will be the Mordvins of the Khanty-Mansi Autonomous Area – Yugra. The Mordvins are one of the largest Finno-Ugric peoples of Russia and they are settled far beyond the borders of their historical motherland. Large-scale resettlement processes among the peoples of the Ural-Volga region are explained by forced Christianization, the search for new / «best» territories for living, the formation of contact zones of residence, the «Sovietization» of daily life and traditional culture, Komsomol construction sites, relocation and development of virgin lands or participation in the development of oil fields.
Gutzwiller scheme for electrons and phonons: the half-filled Hubbard-Holstein model
Creators: name: Barone, P.
name: Raimondi, R.
name: Capone, M.
name: Castellani, C.
name: Fabrizio, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the ground-state properties of strongly-correlated electrons coupled with phonons by means of a generalized Gutzwiller wavefunction which includes phononic degrees of freedom. We study in detail the paramagnetic half-filled Hubbard-Holstein model, where the electron-electron interaction can lead to a Mott transition, and the electron-phonon coupling to a bipolaronic transition. We critically discuss the quality of the proposed wavefunction in describing the various transitions and crossovers that occur as a function of the parameters. Previous variational attempts are recovered as particular choices of the wavefunction, while keeping all the variational freedom allows to access regions of the phase diagram otherwise inaccessible within previous variational approaches.
description: 11 pages, 6 figures. Published version, minor changes in the discussion of the results
Algorithmic approach to Cosmological Coherent State Expectation Values in LQG
Creators: name: Liegener, Klaus
name: Rudnicki, Łukasz
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: In the lattice approach to Loop Quantum Gravity on a fixed graph computations tend to be involved and are rarely analytically manageable. But, when interested in the expectation values of coherent states on the lattice which are sharply peaked on isotropic, flat cosmology several simplifications are possible which reduce the computational effort. We present a step-by-step algorithm resulting in an analytical expression including up to first order corrections in the spread of the state. The algorithm is developed in such a way that it makes the computation straightforward and easy to be implementable in programming languages such as Mathematica. Exemplarily, we demonstrate how the algorithm streamlines the road to obtain the expectation value of the euclidean part of the scalar constraint and as a consistency check perform the analytic computation as well. To showcase further applications of the algorithm, we investigate the fate of the effective dynamics program custom in Loop Cosmology and find that the next-to-leading order corrections can {\it not} be used as corrections for an effective Hamiltonian.
description: 33 pages; This paper summarizes the results announced at Loops'19 Conference [http://gravity.psu.edu/events/loops19/index-loops19.shtml]. First draft - minor typos can still be found
A Utility-Aware Privacy Preserving Framework For Distributed Data Mining With Worst Case Privacy Guarantee
Creators: name: Banerjee, Madhushri
Publisher: name: Maryland Shared Open Access Repository
Year: 2011
Subjects: Data mining
Distributed data
Privacy
Secure multi-party computation
Security

description: Data Mining is the task of finding meaningful patterns from huge amount of data. With the enormous growth of data and their distributed nature, storage of data and analysis of data are often separated, therefore developing the need for the research area of privacy preserving data mining. In other words, privacy preserving data mining is needed when the data is private in nature and revealing of sensitive information needs to the prevented, while still allowing mining of the data with reasonable accuracy. Various data perturbation techniques exist in literature for this purpose. One significant drawback with the existing methods is that they handle average case privacy scenario. But, while dealing with private and business data it would definitely be beneficial to have a privacy framework that would provide a certain guarantee that the data would not be divulged in the worst case. In a distributed data setting, it is often beneficial for organizations to collaboratively perform data mining tasks without giving up their own data. This necessity has developed the research areas of secure multiparty computation and privacy preserving distributed data mining. There exist several protocols that deal with data mining tasks in a distributed scenario but most of these techniques handle a single data mining method. Therefore, if the participating parties are interested in more than one classification methods they will have to go through a series of distributed protocols every time for a different method thus increasing the overhead substantially. Another critical problem with the existing privacy protection techniques is that they do not take the data mining tasks that will be performed on the perturbed data into consideration thus reducing the utility of the perturbation techniques substantially. In a distributed setting the parties are aware of the data mining tasks they would need to perform collaboratively. For example, the collaborative parties are aware that they are building a classification model or predicting an attribute. Therefore, if the data perturbation methods can be pruned according to the need of the end user the utility of the privacy protection techniques can be increased significantly. Here, in this dissertation multiple privacy preserving data mining algorithms have been proposed for multiple data mining methods that address all these above mentioned issues and provide a utility aware approach to privacy preserving data mining in a centralized as well as distributed scenario with worst case privacy guarantee. These algorithms will also allow the end user to perform exploratory data analysis on the perturbed data. Detailed experimental results will demonstrate the effectiveness of these techniques.
(Ga,In)P: A standard alloy in the classification of phonon mode behavior
Creators: name: Pages, O.
name: Chafi, A.
name: Fristot, D.
name: Postnikov, A. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Contrary to a broadly accepted assumption we show that random (Ga,In)P is not an exception with respect to the crude classification of the phonon mode behavior of random mixed crystals in terms of 1-bond->1-mode systems or 2-bond->1-mode systems, as established from the simple criterion derived by Elliott et al. [Rev.Mod.Phys. 46, 465 (1974)]. Consistent understanding of the puzzling Raman/infrared behavior of (Ga,In)P, that has been a subject of controversy, is achieved via a basic version of our 1-bond->2-mode model. The Raman/infrared features from (Ga,In)P are accordingly re-assigned, with considerable change with respect to the previous approaches. Besides, we show that the idea of two bond lengths per species in alloys, supported by our 1-bond->2-phonon picture, opens an attractive area for the discussion of spontaneous ordering in GaInP_2, and in mixed crystals in general. The whole discussion is supported by detailed re-examination of the (Ga,In)P Raman/infrared data in the literature, full contour modeling of the transverse and longitudinal optical Raman lineshapes via our phenomenological 1-bond->2-mode model, and first-principles bond length calculations.
description: 12 pages, 3 figures, submitted to Phys.Rev.B
Grammar book collaboration
Creators: name: Carrillo Godínez, Silvia Lucrecia
name: Sales, Henry
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom.

The elicitation focuses on corrections and checks to an intermediate and beginner grammar books. The books were created primarily by Tessa Scott and Cristina Méndez, two learners of Mam. The content of the books was then checked by native Mam speakers. The grammar books are included in this file bundle. They should be interpreted as learners' notes, not necessarily primary data.

In this file bundle: 1 Zoom audio/video recording, 1 beginner grammar book, 1 intermediate grammar book (also archived and discussed in 2020-15.0340).
Fat Magnon
Creators: name: Hirano, Shinji
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a D-brane type state which shares the characteristic of the recently found giant magnon of Hofman and Maldacena. More specifically we find a bound state of giant graviton (D3-brane) and giant magnon (F-string), which has exactly the same anomalous dimension as that of the giant magnon. It is described by the D3-brane with electric flux which is topologically a $S^3$ elongated by the electric flux. The angular momentum and energy are infinite, but split sensibly into two parts -- the infinite part precisely the same as that of the giant magnon and the finite part which can be identified as the contribution from the giant graviton. We discuss that the corresponding dual gauge theory operator is not a simple chain type but rather admixture of the (sub-)determinant and chain types.
description: 18 pages, 5 figures; v2 references added; v3 a reference added; v4 added a reference and discussions on the physical CFT operator. The version to appear in JHEP
How two couples adopt to biological childlessness and reconstruct their lives once fertility is no longer a viable option
Creators: name: Bockus, Diana
Publisher: name: University of British Columbia
Year: 2009

description: The present longitudinal study explores how two Caucasian, heterosexual couples experiencing 'unexplained infertility' adapted to biological childlessness after fertility treatment was no longer a viable option. Previous literature on infertile couples' process of adaptation post treatment focused on those who succeeded in having a genetic child. In this study each couple pursued an alternative life path to biological parenthood by either becoming adoptive parents or by choosing nonparenthood. Their respective journeys were documented in a succession of four unstructured, ih-depth audio taped interviews at 10-month intervals over a period of 3.5-years. The findings show that both couples, although they pursued variant life paths, evolved from a negative perception and experience of life without biological children to having a positively lived life as a biologically childless couples. The adaptation process involved a complex and intense interconnected series of events and experiences associated with three phases. Letting Go of the Biological Parenthood Quest, Recovery and Discovering Life Options, and Making and Living a New Life Path. The following aspects were linked to these adaptation phases and enabled couples to construct a new life without biological parenthood: grieving their losses associated with infertility and their genetic child; acceptance of biological childlessness; personal growth experiences; seeking and achieving balance personally and in their daily life as a couple; and envisioning, establishing and living their new life path.
Phase diagram of a 2D Ising model within a nonextensive approach
Creators: name: Soares-Pinto, D. O.
name: Oliveira, I. S.
name: Reis, M. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work we report Monte Carlo simulations of a 2D Ising model, in which the statistics of the Metropolis algorithm is replaced by the nonextensive one. We compute the magnetization and show that phase transitions are present for $q\neq 1$. A $q -$ phase diagram (critical temperature vs. the entropic parameter $q$) is built and exhibits some interesting features, such as phases which are governed by the value of the entropic index $q$. It is shown that such phases favors some energy levels of magnetization states. It is also showed that the contribution of the Tsallis cutoff is essential to the existence of phase transitions.
A Usability Model for Web-Based Personalization Based on Privacy and Security
Creators: name: Getek, Ryan C.
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Personalization
Privacy
Security
Usability

description: Personalization approaches have become popular as content providers have attempted to provide features that differentiate their sites from the sites of competitors while enhancing usability. For instance, the Google and MSN news pages offer the ability to modify the content and size of news categories. Additional personalization and customization features are also offered on sites such as Google News, MSN, and Yahoo!. Personalization requires the acquisition of data that can be used to modify the content or presentation of the web page. Users have demonstrated that they often claim to be privacy conscious, but still provide information easily to sites on the Internet for widely varying levels of benefit in return (Berendt, Gunther, & Spiekermann, 2005). In order to better align the privacy preferences of users to actual practice, a multi-phased survey was conducted that measured user preferences for how data should be obtained, used, and shared by sites. The survey included real-world personalization scenarios in order to identify the conditions under which users provide information to a site to support a personalized experience. The results revealed that personalization is not necessarily a differentiating feature in news site choice. With respect to privacy, users do not get substantial information from the privacy policies of sites they visit and are largely unaware of common data collection practices by news sites to support personalization. Users are generally less concerned about interface data privacy than the privacy of user-based data. Finally, privacy breaches are more likely to affect user satisfaction than unintentional security breaches. Additional analyses were performed using ordinal regression, principal components analysis, and non-parametric techniques for identifying differences and correlations. The results also facilitated the development of a usability model and associated recommendations for how sites that implement personalization should handle data used to support personalization. This includes communication mechanisms such as privacy policies and the impact of privacy and security breaches. As part of this research, a conceptual model is presented that demonstrates the relationships between factors such as usability, privacy and security, and complexity of a personalized architecture.
Nimbus: Scalable, Distributed, In-Memory Data Storage
Creators: name: Shook, Adam Jonathan
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: big data
distributed systems
hadoop
in-memory database
java
mapreduce

description: The Apache Hadoop project provides a framework for reliable, scalable, distributed computing. The storage layer of Hadoop, called the Hadoop Distributed File System (HDFS), is an append-only distributed le system designed for commodity hardware. The append-only nature of the le system limits the ability for applications to have random reads and writes of data. This was addressed by Apache HBase and Apache Accumulo, which both allow for quick random access to a highly scalable key/value store. However, these projects still require data to be read from the local disk of the server, and therefore cannot handle the type of I/O throughput that many applications require. This limits the potential for \hot data sets that cannot be stored in memory of one machine, but do not need the scalability of HBase, i.e. the ones that can be sharded and stored in memory on dozens of machines. These data sets are often referenced by many applications and be several gigabytes in size. Nimbus is a project designed for Hadoop to expose distributed in-memory data structures, backed by the reliability of HDFS. By executing a series of I/O benchmarks against HBase and fully integrated with MapReduce input and output formats. The following discusses relevant use cases and demonstrates Nimbus's performance advantage over HBase, allowing for high-throughput data fetch operations for performant applications.
Applications of Nijenhuis geometry II: maximal pencils of multihamiltonian structures of hydrodynamic type
Creators: name: Bolsinov, Alexey V.
name: Konyaev, Andrey Yu.
name: Matveev, Vladimir S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37K05, 37K06, 37K10, 37K25, 37K50, 53B10, 53A20, 53B20, 53B30, 53B50, 53B99, 53D17

description: We connect two a priori unrelated topics, theory of geodesically equivalent metrics in differential geometry, and theory of compatible infinite dimensional Poisson brackets of hydrodynamic type in mathematical physics. Namely, we prove that a pair of geodesically equivalent metrics such that one is flat produces a pair of such brackets. We construct Casimirs for these brackets and the corresponding commuting flows. There are two ways to produce a large family of compatible Poisson structures from a pair of geodesically equivalent metrics one of which is flat. One of these families is $(n+1)(n+2)/2$ dimensional; we describe it completely and show that it is maximal. Another has dimension $\le n+2$ and is, in a certain sense, polynomial. We show that a nontrivial polynomial family of compatible Poisson structures of dimension $n+2$ is unique and comes from a pair of geodesically equivalent metrics. In addition, we generalise a result of Sinjukov (1961) from constant curvature metrics to arbitrary Einstein metrics.
description: comments are welcome
Tidal Dynamics in Kerr Spacetime
Creators: name: Chicone, C.
name: Mashhoon, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The motion of free nearby test particles relative to a stable equatorial circular geodesic orbit about a Kerr source is investigated. It is shown that the nonlinear generalized Jacobi equation can be transformed in this case to an autonomous form. Tidal dynamics beyond the critical speed c/sqrt(2) is studied. We show, in particular, that a free test particle vertically launched from the circular orbit parallel or antiparallel to the Kerr rotation axis is tidally accelerated if its initial relative speed exceeds c/sqrt(2). Possible applications of our results to high-energy astrophysics are briefly mentioned.
description: 15 pages, 3 figures; v2: slightly expanded version accepted for publication in CQG
Optimized Spatial-Spectral CT for Multi-Material Decomposition
Creators: name: Tivnan, Matthew
name: Wang, Wenying
name: Tilley, Steven
name: Siewerdsen, Jeffrey H.
name: Stayman, J. Webster
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Spectral CT is an emerging modality that uses a data acquisition scheme with varied spectral responses to provide enhanced material discrimination in addition to the structural information of conventional CT. Existing clinical and preclinical designs with this capability include kV-switching, split-filtration, and dual-layer detector systems to provide two spectral channels of projection data. In this work, we examine an alternate design based on a spatial-spectral filter. This source-side filter is made up a linear array of materials that divide the incident x-ray beam into spectrally varied beamlets. This design allows for any number of spectral channels; however, each individual channel is sparse in the projection domain. Model-based iterative reconstruction methods can accommodate such sparse spatial-spectral sampling patterns and allow for the incorporation of advanced regularization. With the goal of an optimized physical design, we characterize the effects of design parameters including filter tile order and filter tile width and their impact on material decomposition performance. We present results of numerical simulations that characterize the impact of each design parameter using a realistic CT geometry and noise model to demonstrate feasibility. Results for filter tile order show little change indicating that filter order is a low-priority design consideration. We observe improved performance for narrower filter widths; however, the performance drop-off is relatively flat indicating that wider filter widths are also feasible designs.
Children's understanding of mixed emotions
Creators: name: Thorneywork, Kristie
Publisher: name: The Australian National University
Year: 2013
Subjects: subject: Emotions in children.
subject: Anxiety in children
subject: Child psychology.
subject: Child development.

description: Understanding mixed emotions is important for various aspects of functioning and evidence suggests that mixed emotion understanding improves with development. Research has suggested that this understanding might proceed differently in anxious children, however there has been little research conducted in this area to date. An initial exploration investigating mixed emotion understanding was conducted with children aged between 7 and 12 years that were experiencing anxiety concerns. This provided initial evidence for the appropriateness of a story-based psychoeducation technique for enhancing mixed emotions in anxious children: it was found to be highly engaging and was considered by children to be helpful and enjoyable. Mixed emotion understanding is a task that can pose a challenge for all children, particularly when the emotions occur in children's family relationships. This thesis therefore also investigated the development of mixed emotion understanding in typically developing children aged between 6 and 12 years in the context of mother-child relationships. Results showed that younger children demonstrated less understanding than older children, that different combinations of emotions were understood equally well by children, and that children of all ages could provide diverse reasons for how mixed emotions can occur. However, only a minority of children reported mixed emotion experience in their own lives. Girls demonstrated greater mixed emotion understanding than boys, but only on more stringent tests of mixed emotion understanding. Most children felt that mixed emotions would be "mixed up" and disliked, and children reported a variety of coping methods for managing any discomfort associated with mixed emotions.
The role of spin in the formation and evolution of galaxies
Creators: name: Berta, Zachory K.
name: Jimenez, Raul
name: Heavens, Alan F.
name: Panter, Ben
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the SDSS spectroscopic sample, we estimate the dark matter halo spin parameter lambda for ~53,000 disk galaxies for which MOPED star formation histories are available. We investigate the relationship between spin and total stellar mass, star formation history, and environment. First, we find a clear anti-correlation between stellar mass and spin, with low mass galaxies generally having high dark matter spins. Second, galaxies which have formed more than ~5% of their stars in the last 0.2 Gyr have more broadly distributed and typically higher spins (including a significant fraction with lambda > 0.1) than galaxies which formed a large fraction of their stars more than 10 Gyr ago. Finally, we find little or no correlation between the value of spin of the dark halo and environment as determined both by proximity to a new cluster catalog and a marked correlation study. This agrees well with the predictions from linear hierarchical torquing theory and numerical simulations.
description: Accepted to MNRAS after moderate revision
Fast multi-labelling in early vision
Creators: name: Zhang, Yuhang
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: TA1634.Z53 2011
subject: Computer vision
subject: Supervised learning (Machine learning)
subject: Algorithms

description: Multi-labelling algorithms are widely used in solving early vision problems. These early vision problems, which include image segmentation, stereo correspondence estimation, etc., are of fundamental importance in computer vision research and applications. Solving a multi-label problem is in general NP-hard. Despite the notable success in the development of multi-labelling algorithms in recent years, heavy computation is still required especially when the size of the problem becomes large, which makes multi-labelling in general a slow process. The limitation in efficiency bottlenecks the availability of multi-labelling algorithms for practical applications and scientific research. This thesis aims to improve the situation via significantly elevating the solving speed of multi-labelling problems in early vision applications. - provided by Candidate.
Dependency Solving Is Still Hard, but We Are Getting Better at It
Creators: name: Abate, Pietro
name: Di Cosmo, Roberto
name: Gousios, Georgios
name: Zacchiroli, Stefano
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Dependency solving is a hard (NP-complete) problem in all non-trivial component models due to either mutually incompatible versions of the same packages or explicitly declared package conflicts. As such, software upgrade planning needs to rely on highly specialized dependency solvers, lest falling into pitfalls such as incompleteness-a combination of package versions that satisfy dependency constraints does exist, but the package manager is unable to find it. In this paper we look back at proposals from dependency solving research dating back a few years. Specifically, we review the idea of treating dependency solving as a separate concern in package manager implementations, relying on generic dependency solvers based on tried and tested techniques such as SAT solving, PBO, MILP, etc. By conducting a census of dependency solving capabilities in state-of-the-art package managers we conclude that some proposals are starting to take off (e.g., SAT-based dependency solving) while-with few exceptions-others have not (e.g., out-sourcing dependency solving to reusable components). We reflect on why that has been the case and look at novel challenges for dependency solving that have emerged since.
Challenging victim discourse: re-membering the stories of women who have been battered
Creators: name: Carter, Margaret
Publisher: name: University of British Columbia
Year: 2009

description: This study problematizes the notion of victim in the context of women who have experienced battering in their intimate committed relationships. To this end I interviewed four women, using an in-depth semi-structured interview to obtain the women's narratives. I examined the women's narratives in order to analyze how they constructed and interpreted their experiences of victimization as well as how they perceived and defined themselves. The intent was to render visibility to the uniqueness, complexity, diversity, and commonalities of these women's stories. Women who have experienced battering are important to this study because the label "victim" is frequently applied to them regardless of whether these women define themselves or construct their experiences in terms of being victims or of being battered. Critiquing dominant perspectives, attending to broader cultural contexts, and exploring marginalized realities are indicative of a longstanding feminist agenda. Psychology and counselling psychology are constructed within dominant historical and sociocultural contexts. Mainstream and popular psychological texts, in their attempts to establish grand theories and prevailing norms, have tended to engage in oversimplified textual constructions presumed to reflect lived realities, yet ignoring both individual and broader contexts. In this thesis I attend both to contexts and to marginalized realities. The significance of this project lies in its potential to enhance current therapeutic and counselling practices. Additionally, it provides a challenge to the often presumed innocent employment of language without regard for its significant meanings and impact. It is critical that professionals working with women who are experiencing battering, understand the complexity of their experiences without imposing labels that limit these women's identities and are incongruent with their lived realities. This thesis problematizes dominant discourse regarding victims and victimization in an exploration of multiple, sometimes seemingly contradictory meanings, and diverse processes.
Letter from W. R. Megaw to "Sir" [F. A. Hewer], July 22, 1909
Creators: name: Megaw, W.R.
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to "Sir" [F. A. Hewer] from W. R. Megaw, dated July 22, 1909, telling F. A. Hewer that the potatoes he requested have not been shipped.
The dark matter halos of massive, relaxed galaxy clusters observed with Chandra
Creators: name: Schmidt, R. W.
name: Allen, S. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the Chandra X-ray Observatory to study the dark matter halos of 34 massive, dynamically relaxed galaxy clusters, spanning the redshift range 0.06
description: 14 pages, 4 figures, 5 tables. Accepted by MNRAS. Note Table 5 now contains the total cluster mass (dark plus luminous matter)
Peculiar Velocities into the Next Generation: Cosmological Parameters From Large Surveys without Bias from Nonlinear Structure
Creators: name: Abate, Alexandra
name: Bridle, Sarah
name: Teodoro, Luis F. A.
name: Warren, Michael S.
name: Hendry, Martin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate methods to best estimate the normalisation of the mass density fluctuation power spectrum (sigma_8) using peculiar velocity data from a survey like the Six degree Field Galaxy Velocity Survey (6dFGSv). We focus on two potential problems (i) biases from nonlinear growth of structure and (ii) the large number of velocities in the survey. Simulations of LambdaCDM-like models are used to test the methods. We calculate the likelihood from a full covariance matrix of velocities averaged in grid cells. This simultaneously reduces the number of data points and smooths out nonlinearities which tend to dominate on small scales. We show how the averaging can be taken into account in the predictions in a practical way, and show the effect of the choice of cell size. We find that a cell size can be chosen that significantly reduces the nonlinearities without significantly increasing the error bars on cosmological parameters. We compare our results with those from a principal components analysis following Watkins et al (2002) and Feldman et al (2003) to select a set of optimal moments constructed from linear combinations of the peculiar velocities that are least sensitive to the nonlinear scales. We conclude that averaging in grid cells performs equally well. We find that for a survey such as 6dFGSv we can estimate sigma_8 with less than 3% bias from nonlinearities. The expected error on sigma_8 after marginalising over Omega_m is approximately 16 percent.
description: Accepted for publication in MNRAS, 12 pages, 5 figures. V2 Discussion clarified, 1 figure added, improvements to the text and figures; V3 Figure 5 Plotting error corrected, SN1a contours smaller
Integrated Sachs-Wolfe effect in the era of precision cosmology
Creators: name: Pogosian, Levon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent detections of the Integrated Sachs-Wolfe effect through the correlation of the cosmic microwave background temperature anisotropy with traces of large scale structure provided independent evidence for the expansion of the universe being dominated by something other than matter. Even with perfect data, statistical errors will limit the accuracy of such measurements to worse than 10%. On the other hand, the extraordinary sensitivity of the ISW effect to the details of structure formation should help to make up for the lack of precision. In these conference proceedings I discuss the extent to which future ISW measurements can help in testing the physics responsible for the observed cosmic acceleration.
description: 6 pages, 7 figures, submitted to proceedings of the Fundamental Physics With CMB workshop, UC Irvine, March 23-25, 2006, to be published in New Astronomy Reviews
Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators
Creators: name: Gourmelon, Alexandre
name: Kamata, Hiroshi
name: Berroir, Jean-Marc
name: Fève, Gwendal
name: Plaçais, Bernard
name: Bocquillon, Erwann
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Coulomb interaction has important consequences on the physics of quantum spin Hall edge states, weakening the topological protection via two-particle scattering and renormalizing both the velocity and charge of collective plasmon modes compared to that of free electrons. Despite these effects, interactions remain difficult to quantify. We propose here simple and robust edge resonator geometries to characterize Coulomb interaction by means of high-frequency measurements. They rely on a transmission line approach, and take advantage of the impedance mismatch between the edge states and their microwave environment.
description: 8 pages, 5 figures. Accepted for publication in Phys. Rev. Research
Combinatorial interpretations for rank-two cluster algebras of affine type
Creators: name: Musiker, Gregg
name: Propp, James
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A99; 05C70

description: Fomin and Zelevinsky show that a certain two-parameter family of rational recurrence relations, here called the (b,c) family, possesses the Laurentness property: for all b,c, each term of the (b,c) sequence can be expressed as a Laurent polynomial in the two initial terms. In the case where the positive integers b,c satisfy bc<4, the recurrence is related to the root systems of finite-dimensional rank 2 Lie algebras; when bc>4, the recurrence is related to Kac-Moody rank 2 Lie algebras of hyperbolic type. Here we investigate the borderline cases bc=4, corresponding to Kac-Moody Lie algebras of affine type. In these cases, we show that the Laurent polynomials arising from the recurence can be viewed as generating functions that enumerate the perfect matchings of certain graphs. By providing combinatorial interpretations of the individual coefficients of these Laurent polynomials, we establish their positivity.
description: Misnumbering corrected
UNDERSTANDING NATALITY DATA USERS' PERCEPTIONS AND PREFERENCES TOWARDS a QUERY BASED NOISE ADDITION APPROACH BASED ON DIFFERENTIAL PRIVACY
Creators: name: Alrige, Mayda Abdullateef
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: Differential Privacy
Goal Question Metric
GQM
Pilot Survey
Privacy-perserving
utility

description: This study aims to understand natality data users' perceptions towards the noise-added query answering approach. To this end, a web-based query interface has been developed to allow natality researchers to issue queries and receive noise-added results based on the differential privacy approach. A survey instrument has been developed to understand data users' perceptions and preferences towards this web-based querying system. To design the survey, the goal question metric paradigm is followed to define a measurement framework for differential privacy acceptance, in which, the survey questions are purposeful and quantitatively measurable. The pilot survey has provided a useful feedback. In the light of this feedback, a training tool is suggested to improve the study instrument in the full-scale project. The purpose of this tool is to set the context for the survey questions and provide in-depth information about differential privacy. In the long run, this survey will be controlled by the traditional statistical disclosure control in a comparative study, so that users will be given the chance to determine their preferences based on their research requirements.
The Six Hug Commandments: Design and Evaluation of a Human-Sized Hugging Robot with Visual and Haptic Perception
Creators: name: Block, Alexis E.
name: Christen, Sammy
name: Gassert, Roger
name: Hilliges, Otmar
name: Kuchenbecker, Katherine J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Receiving a hug is one of the best ways to feel socially supported, and the lack of social touch can have severe negative effects on an individual's well-being. Based on previous research both within and outside of HRI, we propose six tenets ("commandments") of natural and enjoyable robotic hugging: a hugging robot should be soft, be warm, be human sized, visually perceive its user, adjust its embrace to the user's size and position, and reliably release when the user wants to end the hug. Prior work validated the first two tenets, and the final four are new. We followed all six tenets to create a new robotic platform, HuggieBot 2.0, that has a soft, warm, inflated body (HuggieChest) and uses visual and haptic sensing to deliver closed-loop hugging. We first verified the outward appeal of this platform in comparison to the previous PR2-based HuggieBot 1.0 via an online video-watching study involving 117 users. We then conducted an in-person experiment in which 32 users each exchanged eight hugs with HuggieBot 2.0, experiencing all combinations of visual hug initiation, haptic sizing, and haptic releasing. The results show that adding haptic reactivity definitively improves user perception a hugging robot, largely verifying our four new tenets and illuminating several interesting opportunities for further improvement.
description: 9 pages, 6 Figures, 2 Tables, ACM/IEEE Human-Robot Interaction (HRI) Conference 2021
Introduction to polaron physics: Basic Concepts and Models
Creators: name: Ranninger, Julius
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We review the major trends over the past decades in the theoretical and experimental approaches to the underlying physics of Many Polaron systems, concentrating on the cross-over between large an small polaronic charge carriers.
description: 25 pages, 10 figures
Unparticle Effects on Top Quark Spin Correlations in e^+e^- Collision
Creators: name: Sahin, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the effects of scalar and vector unparticles on top quark spin correlations via the process $e^{+}e^{-}\to t \bar{t}$. In addition to the Standard Model diagrams, there is a new contribution to top-antitop quark production process mediated by unparticle in the s-channel. It is shown that scalar and vector unparticle contribution leads to a considerable deviation of the top spin correlations from the Standard Model one.
description: 13 pages, 6 figures
Hyperbranched DNA clusters
Creators: name: Lattuada, Enrico
name: Caprara, Debora
name: Lamberti, Vincenzo
name: Sciortino, Francesco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Taking advantage of the base-pairing specificity and tunability of DNA interactions, we investigate the spontaneous formation of hyperbranched clusters starting from purposely designed DNA tetravalent nanostar monomers, encoding in their four sticky-ends the desired binding rules. Specifically, we combine molecular dynamics simulations and Dynamic Light Scattering experiments to follow the aggregation process of the DNA nanostars at different concentrations and temperatures. At odd with the Flory-Stockmayer predictions, we find that, even when all possible bonds are formed, the system does not reach percolation due to the presence of intracluster bonds. We present an extension of the Flory-Stockmayer theory that properly describes the numerical and the experimental results.
description: The Supplementary Information is included in the pdf file
Elicitation on reflexives and grammar book collaboration
Creators: name: Carrillo Godínez, Silvia Lucrecia
name: Scott, Tessa
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom.

The elicitation focuses on reflexive constructions and the use of relational nouns to introduce oblique arguments.

This session also includes corrections and checks to an intermediate grammar book. The book was created primarily by Tessa Scott and Cristina Méndez, two learners of Mam. The content of the books was then checked by native Mam speakers. The grammar book is included in this file bundle. It should be interpreted as learners' notes, not necessarily primary data.

In this file bundle: 1 Zoom audio/video recording, 1 Zoom chat file, 1 pdf of typed notes, 1 intermediate grammar book
Nodal Structure of Superconductors with Time-Reversal Invariance and Z2 Topological Number
Creators: name: Sato, Masatoshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A topological argument is presented for nodal structures of superconducting states with time-reversal invariance. A generic Hamiltonian which describes a quasiparticle in superconducting states with time-reversal invariance is derived, and it is shown that only line nodes are topologically stable in single-band descriptions of superconductivity. Using the time-reversal symmetry, we introduce a real structure and define topological numbers of line nodes. Stability of line nodes is ensured by conservation of the topological numbers. Line nodes in high-Tc materials, the polar state in p-wave paring and mixed singlet-triplet superconducting states are examined in detail.
description: 11 pages, 8 figures