cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Inhabiting the information space : Paradigms of collaborative design environments
Creators: name: Shakarchī, ʻAlī
Publisher: name: University of British Columbia
Year: 2009

description: The notion of information space (iSpace) is that a collective context of transmitters and receivers can serve as a medium to share, exchange, and apply data and knowledge between a group of human beings or software agents. Inhabiting this space requires a perception of its dimensions, limits, and an understanding of the way data is diffused between inhabitants. One of the important aspects of iSpace is that it expands the limits of communication between distributed designers allowing them to carry out tasks that were very difficult to accomplish with the diverse, but not well integrated current communication technologies. In architecture, design team members, often rely on each others' expertise to review and problem solve design issues as well as interact with each other for critic, and presentations. This process is called Collaborative Design. Applying this process of collaboration to the iSpace to serve as a supplementary medium of communication, rather than a replacement for it, and understanding how design team members can use it to enhance the effectiveness of the design process and increase the efficiency of communication, is the main focus of this research. The first chapter will give an overview of the research and define the objectives and the scope of it as well as giving a background on the evolving technological media in design practice. This chapter will also give a summary of some case studies for collaborative design projects as real examples to introduce the subject. The second chapter of this research will study the collaborative design activities with respect to the creative problem solving, the group behaviour, and the information flow between members. It will also examine the technical and social problems with the distributed collaboration. The third chapter will give a definition of the iSpace and analyze its components (epistemological, utilitarian, and cultural) based on research done by others. It will also study the impact of the iSpace on the design process in general and on the architectural product in particular. The fourth chapter will be describing software programs written as prototypes for this research that allow for realtime and non-realtime collaboration over the internet, tailored specifically to suit the design team use to facilitate distributed collaboration in architecture. These prototypes are : 1. pinUpBoard (realtime shared display board for pin-ups) 2. sketchBoard (realtime whiteboarding application with multisessions) 3. mediaBase (shared database management system) 4. teamCalendar (shared interactive calendar on the internet) 5. talkSpace (organized forums for discussions)
Daniel Link, Suturas. Imágenes, escritura, vida
Creators: name: Faienza, Lucia
Publisher: name: Università degli Studi di Cagliari
Year: 2015
Subjects: Daniel Link; Suturas. Imágenes, escritura, vida

description: Ultimo di una trilogia saggistica preceduto da Clases (2005) e Fantasmas (2009), Suturas (2015) chiude il cerchio di quella che il suo autore, Daniel Link, chiama «interrogación sobre lo viviente». Già il titolo mostra l’ambiguità da cui prende avvio la riflessione di Link e che attraversa la pluralità degli oggetti su cui si posa lo sguardo dell’autore: la ”sutura” è tanto la cucitura che unisce la vecchia cultura letteraria con le nuove culture digitali e post-letterarie, quanto la cicatrice che marca la “ferita” di questo cambio di paradigma dentro al corpo della contemporaneità.
description: Between, Vol 5, N° 10 (2015): L’immaginario politico. Impegno, resistenza, ideologia
Rainfall Variability and its Impact on Dryland Cropping in Victoria
Creators: name: Wimalasuriya, Rukman
name: Ha, Arthur
name: Tsafack, Esther
name: Larson, Kristoffer
name: Wimalasuriya, Rukman
name: Ha, Arthur
name: Tsafack, Esther
name: Larson, Kristoffer
Publisher: name: Unknown
Year: 2008
Subjects: Productivity Analysis
Risk and Uncertainty

description: Conventional wisdom holds that rainfall variability represents a significant source of agriculture production risk. Surprisingly, there have been very few economic analyses exploring the link between rainfall variability and agriculture production. This paper is intended to investigate the factual basis of this assumption and to inform future government policy in such areas as drought, climate change adaptation and water policy. We investigate whether rainfall variability has had an actual impact on agricultural production, specifically dryland cropping in Victorian regions during the period 1982-83 to 2004-05.
Additional file 1 of Enhancer looping protein LDB1 modulates MYB expression in T-ALL cell lines in vitro by cooperating with master transcription factors
Creators: name: Li, Yan
name: Zhang, Zimu
name: Yu, Juanjuan
name: Yin, Hongli
name: Chu, Xinran
name: Cao, Haibo
name: Tao, Yanfang
name: Zhang, Yongping
name: Li, Zhiheng
name: Wu, Shuiyan
name: Hu, Yizhou
name: Zhu, Frank
name: Gao, Jizhao
name: Wang, Xiaodong
name: Zhou, Bi
name: Jiao, Wanyan
name: Wu, Yumeng
name: Yang, Yang
name: Chen, Yanling
name: Zhuo, Ran
name: Yang, Ying
name: Zhang, Fenli
name: Shi, Lei
name: Hu, Yixin
name: Pan, Jian
name: Hu, Shaoyan
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 1. Supplementary Figure 1. A. The white slice indicates that LDB1 knockdown remarkably suppressed the proliferation of Jurkat, 6T-CEM, and J.gamma1 cells compared to scramble cells. B.The proportion of cell proliferation was conducted by EdU-594 assays in the LDB1 knockdown group compared to the control group in 6T-CEM and Jurkat cells five days after virus transfection with the quantitative data depicted in bar graphs
Monitoring Economic and Social Changes within NSW Water Sharing Plan Areas: A Participatory Approach
Creators: name: Bari, Maksudul
name: Singh, Inderpal
name: Flavel, Noel J.
name: Bari, Maksudul
name: Singh, Inderpal
name: Flavel, Noel J.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Land Economics/Use
subject: Research Methods/ Statistical Methods
subject: Monitoring
subject: Irrigation Industry
subject: Water Sharing Plans
subject: Economic and Social Indicators
subject: Methodology
subject: Participatory Approach

description: This paper presents a participatory approach being used to monitor the changes in economic and social indicators within the Water Sharing Plan areas in NSW. The approach entails close cooperation and input from the stakeholders comprising engagement and scoping; profiling, literature review and media scanning; indicators selection; data collection; and analysis and reporting over time. The monitoring data on the key economic and social indicators will be used for review of the Water Sharing Plans as well as further refinement and development of water policies in NSW. This framework provides the basis for developing similar monitoring programs.
The influence of numerical parameters on tidally triggered bar formation
Creators: name: Gabbasov, R. F.
name: Rodriguez-Meza, M. A.
name: Klapp, Jaime
name: Cervantes-Cota, Jorge L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The joint influence of numerical parameters such as the number of particles N, the gravitational softening length $ε$ and the time-step $Δt$ is investigated in the context of galaxy simulations. For isolated galaxy models we have performed a convergence study and estimated the numerical parameters ranges for which the relaxed models do not deviate significantly from its initial configuration. By fixing N, we calculate the range of the mean interparticle separation $λ(r)$ along the disc radius. We have found that in the simulations with N=1310720 particles $λ$ varies by a factor of 6, and the corresponding final Toomre's parameters Q change by only about 5 per cent. By decreasing N, the $λ$ and Q ranges broaden. Large $ε$ and small N cause an earlier bar formation. For a given set of parameters the disc heating is smaller with the Plummer softening than with the spline softening. For galaxy collision models numerical simulations indicate that the properties of the formed bars strongly depend upon the selection of N and $ε$. Large values of the gravitational softening parameter and a small number of particles results in the rapid formation of a well defined, slowly rotating bar. On the other hand, small values of $ε$ produce a small, rapidly rotating disc with tightly wound spiral arms, and subsequently a weak bar emerges. We have found that by increasing N, the bar properties converge and the effect of the softening parameter diminishes. Finally, in some cases short spiral arms are observed at the ends of the bar that change periodically from trailing to leading and vice-versa - the wiggle.
description: 17 pages, 13 figures, 3 tables. Accepted for publication in A&A. A high resolution version of the paper is found at http://www.astro.inin.mx/ruslan/tidal_bars/gabbasov.pdf
A Test of the Cosmological Principle with Quasars
Creators: name: Secrest, Nathan
name: von Hausegger, Sebastian
name: Rameez, Mohamed
name: Mohayaee, Roya
name: Sarkar, Subir
name: Colin, Jacques
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the large-scale anisotropy of the Universe by measuring the dipole in the angular distribution of a flux-limited, all-sky sample of 1.36 million quasars observed by the Wide-field Infrared Survey Explorer (WISE). This sample is derived from the new CatWISE2020 catalog, which contains deep photometric measurements at 3.4 and 4.6 $μ$m from the cryogenic, post-cryogenic, and reactivation phases of the WISE mission. While the direction of the dipole in the quasar sky is similar to that of the cosmic microwave background (CMB), its amplitude is over twice as large as expected, rejecting the canonical, exclusively kinematic interpretation of the CMB dipole with a p-value of $5\times10^{-7}$ ($4.9σ$ for a normal distribution, one-sided), the highest significance achieved to date in such studies. Our results are in conflict with the cosmological principle, a foundational assumption of the concordance $Λ$CDM model.
description: 8 pages, 4 figures, accepted for publication in ApJ Letters. Code and data available at https://doi.org/10.5281/zenodo.4431089
Financing Constraints and the Family Farm: How do Families React?
Creators: name: Hartarska, Valentina M.
name: Mai, Chi
name: Hartarska, Valentina M.
name: Mai, Chi
Publisher: name: Unknown
Year: 2008
Subjects: Farm Management

description: This paper explores the idea that off-farm income is used for investment in farm assets. Using Alabama farm data for the 1997-2004 period, we find that farm investment is more sensitive to off-farm than to on-farm income, and that this sensitivity is stronger for farms with sales less than $250,000.
Static Polarizabilities of Dielectric Nanoclusters
Creators: name: Kim, Hye-Young
name: Sofo, Jorge O.
name: Velegol, Darrell
name: Cole, Milton W.
name: Mukhopadhyay, Gautam
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A cluster consisting of many atoms or molecules may be considered, in some circustances, to be a single large molecule with a well defined polarizability. Once the polarizability of such a cluster is known, one can evaluate certain properties, e.g. the cluster's van der Waals interactions, using expressions derived for molecules. In the present work, we evaluate the static polarizability of a cluster using a microscopic method that is exact within the linear and dipolar approximations. Numerical examples are presented for various shapes and sizes of clusters composed of identical atoms, where the term "atom" actually refers to a generic constituent, which could be any polarizable entity. The results for the cluster's polarizabilities are compared with those obtained by assuming simple additivity of the constituents' atomic polarizabilities; in many cases, the difference is large, demonstrating the inadequacy of the additivity approximation. Comparison is made (for symmetrical geometries) with results obtained from continuum models of the polarizability. Also, the surface effects due to the nonuniform local field near a surface or edge are shown to be significant.
description: 44 pages, 5 tables, 20 figures, A shortened version is to be published in Phys. Rev. A
Luigi Marfè, «In English Clothes». La novella italiana in Inghilterra: politica e poetica della traduzione
Creators: name: Menetti, Elisabetta
Publisher: name: Università degli Studi di Cagliari
Year: 2015
Subjects: Recensione; Luigi Marfè; «In English Clothes». La novella italiana in Inghilterra: politica e poetica della traduzione

description: Trasformare in abiti inglesi le stoffe multicolori della novellistica italiana significa tagliare, aggiungere altri materiali, imbastire e ricucire una nuova collezione seguendo le ispirazioni del momento. L'artigiano che si dedica al recupero dei materiali novellistici più antichi con la maestria di un sarto è John Florio, che ricorda questa immagine per spiegare il suo lavoro di traduzione nel 1603 degli Essays di Montaigne. Florio, inoltre, è anche il probabile ed unico traduttore del Decameron di Giovanni Boccaccio: siamo nel 1620, anno in cui sembra concludersi la formidabile stagione delle traduzioni inglesi, cominciate durante il regno di Elisabetta I (1558-1603).
description: Between, Vol 5, N° 10 (2015): L’immaginario politico. Impegno, resistenza, ideologia
Semilattices of groups and nonstable K-theory of extended Cuntz limits
Creators: name: Pardo, Enrique
name: Wehrung, Friedrich
Publisher: name: arXiv
Year: 2005
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: Primary 20M17, 46L35; Secondary 06A12, 06F05, 46L80

description: We give an elementary characterization of those (abelian) semigroups $M$ that are direct limits of countable sequences of finite direct products of monoids of the form $C\cup\{0\}$ for monogenic groups $C$. This characterization involves the Riesz refinement property together with lattice-theoretical properties of the collection of subgroups of $M$, and it makes it possible to express $M$ as a certain submonoid of a direct product $S\times G$, where $S$ is a distributive semilattice with zero and $G$ is an abelian group. When applied to the monoids $V(A)$ appearing in the nonstable K-theory of C*-algebras, our results yield a full description of $V(A)$ for C*-inductive limits $A$ of finite products of full matrix algebras over either Cuntz algebras $O\_n$, where $2\leq n
description: K-Theory, to appear
A halo model approach for the 21-cm power spectrum at cosmic dawn
Creators: name: Schneider, Aurel
name: Giri, Sambit K.
name: Mirocha, Jordan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Prior to the epoch of reionisation, the 21-cm signal of the cosmic dawn is dominated by the Lyman-$α$ coupling and gas temperature fluctuations caused by the first sources of radiation. While early efforts to model this epoch relied on analytical techniques, the community quickly transitioned to more expensive semi-numerical models. Here, we re-assess the viability of simpler approaches that allow for rapid explorations of the vast astrophysical parameter space. We propose a new analytical method to calculate the 21-cm power spectrum based on the framework of the halo model. Both the Lyman-$α$ coupling and temperature fluctuations are described by overlapping radiation flux profiles that include spectral red-shifting and source attenuation due to look-back (light-cone) effects. The 21-cm halo model is compared to the semi-numerical code 21cmFAST exhibiting generally good agreement, i.e., the power spectra differ by less than a factor of three over a large range of $k$-modes and redshifts. We show that the remaining differences between the two methods are comparable to the expected variations from modelling uncertainties associated with the abundance, bias, and accretion rates of haloes. While these current uncertainties must be reduced in the future, our work suggests that inference at acceptable accuracy will become feasible with very efficient halo models of the cosmic dawn.
description: Accepted version (Phys.Rev.D)
Entropy Current in Conformal Hydrodynamics
Creators: name: Loganayagam, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In recent work (arXiv:0712.2456, arXiv:0712.2451) the energy-momentum tensor for the N=4 SYM fluid was computed up to second derivative terms using holographic methods. The aim of this note is to propose an entropy current (accurate up to second derivative terms) consistent with this energy-momentum tensor and to explicate its relation with the existing theories of relativistic hydrodynamics. In order to achieve this, we first develop a Weyl-covariant formalism which simplifies the study of conformal hydrodynamics. This naturally leads us to a proposal for the entropy current of an arbitrary conformal fluid in any spacetime (with d>3). In particular, this proposal translates into a definite expression for the entropy flux in the case of N=4 SYM fluid. We conclude this note by comparing the formalism presented here with the conventional Israel-Stewart formalism.
description: LaTeX, 26 pages, fixed typos
Berkeley Field Methods: San Pedro Necta Mam
Creators: name: Ruiz, Wendy
name: Laparle, Schuyler
name: Lemon, Tyler
name: Michael, Lev
name: Schwarz, Martha
name: Dos Santos, Wesley
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020

description: Sound recordings and notes from in-class and small-group elicitation sessions pertaining to lexicon, grammar, and phonology.
Additional file 2 of Enhancer looping protein LDB1 modulates MYB expression in T-ALL cell lines in vitro by cooperating with master transcription factors
Creators: name: Li, Yan
name: Zhang, Zimu
name: Yu, Juanjuan
name: Yin, Hongli
name: Chu, Xinran
name: Cao, Haibo
name: Tao, Yanfang
name: Zhang, Yongping
name: Li, Zhiheng
name: Wu, Shuiyan
name: Hu, Yizhou
name: Zhu, Frank
name: Gao, Jizhao
name: Wang, Xiaodong
name: Zhou, Bi
name: Jiao, Wanyan
name: Wu, Yumeng
name: Yang, Yang
name: Chen, Yanling
name: Zhuo, Ran
name: Yang, Ying
name: Zhang, Fenli
name: Shi, Lei
name: Hu, Yixin
name: Pan, Jian
name: Hu, Shaoyan
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 2. Supplementary Figure 2. A-B: Knockdown of LDB1 induces cell cycle arrest in the G0/G1 phase in Jurkat and 6T-CEM cells with the quantitative data depicted in bar graphs. C-D: Knockdown of LDB1 increased the apoptotic rates of PF-382 and SUP1 cell lines with the quantitative data depicted in bar graphs
Intersection Types and (Positive) Almost-Sure Termination
Creators: name: Lago, Ugo Dal
name: Faggian, Claudia
name: Della Rocca, Simona Ronchi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Randomized higher-order computation can be seen as being captured by a lambda calculus endowed with a single algebraic operation, namely a construct for binary probabilistic choice. What matters about such computations is the probability of obtaining any given result, rather than the possibility or the necessity of obtaining it, like in (non)deterministic computation. Termination, arguably the simplest kind of reachability problem, can be spelled out in at least two ways, depending on whether it talks about the probability of convergence or about the expected evaluation time, the second one providing a stronger guarantee. In this paper, we show that intersection types are capable of precisely characterizing both notions of termination inside a single system of types: the probability of convergence of any lambda-term can be underapproximated by its type, while the underlying derivation's weight gives a lower bound to the term's expected number of steps to normal form. Noticeably, both approximations are tight -- not only soundness but also completeness holds. The crucial ingredient is non-idempotency, without which it would be impossible to reason on the expected number of reduction steps which are necessary to completely evaluate any term. Besides, the kind of approximation we obtain is proved to be optimal recursion theoretically: no recursively enumerable formal system can do better than that.
Additional file 3 of Enhancer looping protein LDB1 modulates MYB expression in T-ALL cell lines in vitro by cooperating with master transcription factors
Creators: name: Li, Yan
name: Zhang, Zimu
name: Yu, Juanjuan
name: Yin, Hongli
name: Chu, Xinran
name: Cao, Haibo
name: Tao, Yanfang
name: Zhang, Yongping
name: Li, Zhiheng
name: Wu, Shuiyan
name: Hu, Yizhou
name: Zhu, Frank
name: Gao, Jizhao
name: Wang, Xiaodong
name: Zhou, Bi
name: Jiao, Wanyan
name: Wu, Yumeng
name: Yang, Yang
name: Chen, Yanling
name: Zhuo, Ran
name: Yang, Ying
name: Zhang, Fenli
name: Shi, Lei
name: Hu, Yixin
name: Pan, Jian
name: Hu, Shaoyan
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 3. Supplementary Figure 3. A. H&E staining analysis of the mouse spleen, demonstrated a notable reduction in tumor cells in the LDB1 knockdown group in comparison to the control group. B-D. The proportion of 6T-CEM cells in the liver, bone marrow (BM), and spleen of both control and LDB1 knockdown groups was assessed using hCD45 flow cytometry, with the quantitative data depicted in bar graphs
Wissenschaftliche Bearbeitung des Palais Beauharnais, Residenz der deutschen Botschafter/- innen in Paris / Recherches scientifiques sur l’hôtel de Beauharnais, résidence de l’ambassadeur d’Allemagne à Paris
Creators: name: Redaktion, Die
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2021

description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2019/2020
Suppressing Speckle Noise for Simultaneous Differential Extrasolar Planet Imaging (SDI) at the VLT and MMT
Creators: name: Biller, Beth A.
name: Close, Laird M.
name: Lenzen, Rainer
name: Brandner, Wolfgang
name: McCarthy, Donald
name: Nielsen, Eric
name: Kellner, Stephan
name: Hartung, Markus
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the instrumental and data reduction techniques used to suppress speckle noise with the Simultaneous Differential Imager (SDI) implemented at the VLT and the MMT. SDI uses a double Wollaston prism and a quad filter to take 4 identical images simultaneously at 3 wavelengths surrounding the 1.62 um methane bandhead found in the spectrum of cool brown dwarfs and gas giants. By performing a difference of images in these filters, speckle noise from the primary can be significantly attenuated, resulting in photon noise limited data past 0.5''. Non-trivial data reduction tools are necessary to pipeline the simultaneous differential imaging. Here we discuss a custom algorithm implemented in IDL to perform this reduction. The script performs basic data reduction tasks but also precisely aligns images taken in each of the filters using a custom shift and subtract routine. In our survey of nearby young stars at the VLT and MMT (see Biller et al., this conference), we achieved H band contrasts >25000 (5 sigma Delta F1(1.575 um) > 10.0 mag, Delta H > 11.5 mag for a T6 spectral type object) at a separation of 0.5" from the primary star. We believe that our SDI images are among the highest contrast astronomical images ever made from ground or space for methane rich companions.
description: 5 pages, 3 figures, 1 table. Presented at IAU Colloquium 200, Direct Imaging of Exoplanets: Science and Techniques
HOMOGENEITY AND SUPPLY
Creators: name: LaFrance, Jeffrey T.
name: Pope, Rulon D.
name: LaFrance, Jeffrey T.
name: Pope, Rulon D.
Publisher: name: Unknown
Year: 2007
Subjects: Research Methods/ Statistical Methods

description: Supply functions in the ubiquitous Gorman class are examined for their homogeneity properties. Homogeneity places surprisingly strong restrictions on functional forms. These forms facilitate testing of aggregability given homogeneity or homogeneity given aggregability or testing both.
Irish Research Performing Organisations (RPO) training - National Open Access Monitor, Ireland
Creators: name: Pispiringas, Leonidas
name: Grypari, Ioanna
Publisher: name: Zenodo
Year: 2023
Subjects: open access
open access monitoring
Irish RPO training
OpenAIRE
OpenAIRE PROVIDE
Guidelines
Repository

description: The Irish Research Performing Organisations (RPO) training is strategically crafted to enhance engagement and elevate data quality within the National Open Access Monitor of Ireland while emphasising the benefits that come with RPOs' Repositories/CRIS Systems being integrated into the National Open Access Monitor of Ireland. Key elements of this initiative encompass the registration of Repositories/CRIS Systems with OpenAIRE, aligning with the OpenAIRE Guidelines. This training is not only beneficial for RPOs that want to register their Repositories/CRIS Systems with OpenAIRE but also for those aiming to upgrade their compliance with these guidelines. This endeavour substantially amplifies the value of Repositories/CRIS Systems metadata by promoting improved metadata interoperability and FAIRness, alignment with IT and repository standards, and the delivery of more adaptable, context-enriched content with enhanced vocabularies. The ultimate goal is to unveil a more robust and qualitative RPO Monitor with richer and more comprehensive indicators.
Reconstructing Mimetic Cosmology
Creators: name: Cárdenas, Víctor H.
name: Cruz, Miguel
name: Lepe, Samuel
name: Salgado, Patricio
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We explore the mimetic gravity formulation with the inclusion of a scalar field potential namely, $V(ϕ)$. However, we are not considering any {\it a priori} specific form this term. By means of the Chevallier-Polarski-Linder parametrization for the parameter state of the fluid we can construct an explicit function for such potential in terms of the cosmological redshift and obtain analytical solutions in the mimetic gravity approach. We revise some cosmological implications of these results and additionally we perform a numerical reconstruction for the potential $V$ as a function of the mimetic scalar field, $ϕ$.
description: Improved version, 8 pages, 5 figures. Accepted for publication in Physics of the Dark Universe
ANALYZING THE IMPACT OF BEACH CLOSURES, INTERSITE SUBSTITUTION AND INTERTEMPORAL SUBSTITUTION VIA A MODEL OF ATTENDANCE AT FIVE ORANGE COUNTY BEACHES
Creators: name: Busch, Christopher B.
name: Hanemann, W. Michael
name: Busch, Christopher B.
name: Hanemann, W. Michael
Publisher: name: Unknown
Year: 2001
Subjects: Environmental Economics and Policy
Research Methods/ Statistical Methods

description: This paper explores the impact on beach attendance of beach closures and the intersite and intertemporal substitution that may follow beach closures. A model of beach attendance is developed that builds on a model constructed by Paul Ruud to support the State of California's claim to damages after the American Trader oil spill off the coast of Orange County, southern California. Newly gathered data on beach closures is combined with data on daily attendance from 1985-1993. Variables are constructed to test for intersite substitution (the shifting of beach recreation in space, i.e. from a closed beach to another beach) and intertemporal substitution (the shifting of demand for recreation at a particular beach over time). The method of non-linear least squares is used to estimate a system of five seemingly unrelated regression equations. For each equation, Breush-Pagan tests for heteroskedasticity fail to reject the null hypothesis of homoscedasticity and modified Breush-Godfrey tests for autocorrelation fail to reject the null hypothesis of no autocorrelation. The analysis produces only weak evidence to support rejection of null hypotheses that there are no effects due to beach closures, intertemporal substitution, or intersite substitution. For example, just two of six coefficients on closure variables are statistically significant. The lack of stronger evidence of casual effects likely reflects at least in part the fact that (1) the attendance data that form the foundation for analysis only extend from December to March and (2) people can still visit the beach when it is "closed" since the closures considered here pertain only to water contact. Such closures will likely have a greater effect during summer when air and water temperatures are higher and more people will want to engage in water-based recreation.
BUYER POWER THROUGH PRODUCER'S DIFFERENTIATION
Creators: name: Chambolle, Claire
name: Villas-Boas, Sofia Berto
name: Chambolle, Claire
name: Villas-Boas, Sofia Berto
Publisher: name: Unknown
Year: 2007
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Buyer Power
subject: Product line
subject: differentiation

description: This paper shows that retailers may choose to offer products differentiated in quality to consumers, not to relax downstream competition, but to improve their buyer power in the negotiation with their supplier. We consider a simple vertical industry where two producers sell products differentiated in quality to two retailers who operate in separated markets. In the game, first retailers choose which product to carry, then each retailer and her chosen producer bargain over the terms of a two-part tariff contract and retailers finally choose the quantities. When upstream production costs are convex, the share of the total profits going to the retailer would be higher if they choose to differentiate. We thus isolate the wish to differentiate as "only" due to increasing buyer power: via producer's differentiation, the retailer gets a larger share of smaller total profits. This result also holds when retailers compete downstream. We derive the consequences of a differentiation induced by buyer power motives for consumer surplus.
Black holes in 4D Einstein-Maxwell-Gauss-Bonnet gravity coupled with scalar fields
Creators: name: Wang, Yi-Li
name: Ge, Xian-Hui
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Einstein-Maxwell-Gauss-Bonnet-axion theory in $4$-dimensional spacetime is investigated in this paper through a "Kaluza-Klein-like" process. Dual to systems at finite temperature with background magnetic field on three dimensions, the four-dimensional dyonic black hole solution coupled with higher derivative terms is obtained. After the tensor-type perturbation is added, the shear viscosity to entropy density ratio is calculated at high temperature and low temperature separately. The behaviour of shear viscosity to entropy density ratio of uncharged black holes is found to be similar with that in $5$-dimensional spacetime, violating the Kovtun-Starinets-Son bound as well when temperature becomes lower. In addition, the main feature of this ratio remains almost unchanged in $4$ dimensions, which is characterised by $(T/Δ)^2$ at low temperature $T$, with $Δ$ proportional to the coefficient $β$ from scalar fields. The difficulty in causal analysis is also discussed, which is mainly caused by the vanishing momentum term in equations of motion.
description: 19 pages, 2 figures; more detail, minor corrections, references added. Accepted in EPJC
Massless black holes and black rings as effective geometries of the D1-D5 system
Creators: name: Balasubramanian, Vijay
name: Kraus, Per
name: Shigemori, Masaki
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute correlation functions in the AdS/CFT correspondence to study the emergence of effective spacetime geometries describing complex underlying microstates. The basic argument is that almost all microstates of fixed charges lie close to certain "typical" configurations. These give a universal response to generic probes, which is captured by an emergent geometry. The details of the microstates can only be observed by atypical probes. We compute two point functions in typical ground states of the Ramond sector of the D1-D5 CFT, and compare with bulk two-point functions computed in asymptotically AdS_3 geometries. For large central charge (which leads to a good semiclassical limit), and sufficiently small time separation, a typical Ramond ground state of vanishing R-charge has the M=0 BTZ black hole as its effective description. At large time separation this effective description breaks down. The CFT correlators we compute take over, and give a response whose details depend on the microstate. We also discuss typical states with nonzero R-charge, and argue that the effective geometry should be a singular black ring. Our results support the argument that a black hole geometry should be understood as an effective coarse-grained description that accurately describes the results of certain typical measurements, but breaks down in general.
description: 47 pages, 4 figures. v2: references added. v3: minor corrections to Appendix A, references added
Die Projekte der Stipendiatinnen und Stipendiaten / Les projets des boursières et de boursiers
Creators: name: Alonso Gómez, Sara
name: Aubart, François
name: Bessette, Juliette
name: Delaporte, Marie-Laure
name: Gunti, Claus
name: Marié, Caroline
name: Martin, Julie
name: Vicet, Marie
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2021

description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2019/2020
Forschungsprojekte / Projets de recherche
Creators: name: Redaktion, Die
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2021

description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2019/2020
Experimental Measures of Topological Sector Fluctuations in the F-Model
Creators: name: Arroo, Daan M.
name: Bramwell, Steven T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The two dimensional F-model is an ice-rule obeying model, with a low temperature antiferroelectric state and high temperature critical Coulomb phase. Polarization in the system is associated with topological defects in the form of system-spanning windings which makes it an ideal system on which to observe topological sector fluctuations, as have been discussed in the context of spin ice and Berezinskii-Kosterlitz-Thouless (BKT) systems. Here we develop Lieb and Baxter's historic solutions of the F-model to exactly calculate relevant properties, several apparently for the first time. We further calculate properties not amenable to exact solution by an approximate cavity method and by referring to established scaling results. Of particular relevance to topological sector fluctuations are the exact results for the applied field polarization and the "energetic susceptibility". The latter is a both a measure of topological sector fluctuations and, surprisingly, in this case, a measure of the order parameter correlation exponent. In the high temperature phase, the temperature tunes the density of topological defects and algebraic correlations, with the energetic susceptibility undergoing a jump to zero at the antiferroelectric ordering temperature, analogous to the "universal jump" in BKT systems. We discuss how these results are relevant to experimental systems, including to spin ice thin films and three-dimensional dipolar spin ice and water ice, where we find that an analogous "universal jump" has previously been established in numerical studies. This unexpected result suggests a universal limit on the stability of perturbed Coulomb phases that is independent of dimension and of the order of the transition. Experimental results on water ice Ih are not inconsistent with this proposition. We complete the paper by relating our results to experimental studies of artificial spin ice arrays.
description: 12 pages, 7 figures
Joint source and channel coding for MIMO systems: Is it better to be robust or quick?
Creators: name: Holliday, Tim
name: Goldsmith, Andrea J.
name: Poor, H. Vincent
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We develop a framework to optimize the tradeoff between diversity, multiplexing, and delay in MIMO systems to minimize end-to-end distortion. We first focus on the diversity-multiplexing tradeoff in MIMO systems, and develop analytical results to minimize distortion of a vector quantizer concatenated with a space-time MIMO channel code. In the high SNR regime we obtain a closed-form expression for the end-to-end distortion as a function of the optimal point on the diversity-multiplexing tradeoff curve. For large but finite SNR we find this optimal point via convex optimization. We then consider MIMO systems using ARQ retransmission to provide additional diversity at the expense of delay. For sources without a delay constraint, distortion is minimized by maximizing the ARQ window size. This results in an ARQ-enhanced multiplexing-diversity tradeoff region, with distortion minimized over this region in the same manner as without ARQ. Under a source delay constraint the problem formulation changes to account for delay distortion associated with random message arrival and random ARQ completion times. We use a dynamic programming formulation to capture the channel diversity-multiplexing tradeoff at finite SNR as well as the random arrival and retransmission dynamics; we solve for the optimal multiplexing-diversity-delay tradeoff to minimize end-to-end distortion associated with the source encoder, channel, and ARQ retransmissions. Our results show that a delay-sensitive system should adapt its operating point on the diversity-multiplexing-delay tradeoff region to the system dynamics. We provide numerical results that demonstrate significant performance gains of this adaptive policy over a static allocation of diversity/multiplexing in the channel code and a static ARQ window size.
description: To appear in the IEEE Transactions on Information Theory, Vol. 54, No. 4, April 2008
Die Künste und die neuen Medien (20.– 21. Jahrhundert) / L’art et les nouveaux médias (XXe–XXIe siècle)
Creators: name: Gunthert, André
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2021

description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2019/2020
A Model of the Roles of Essential Kinases in the Induction and Expression of Late Long-Term Potentiation
Creators: name: Smolen, Paul
name: Baxter, Douglas A.
name: Byrne, John H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: The induction of late long-term potentiation (L-LTP) involves complex interactions among second messenger cascades. To gain insights into these interactions, a mathematical model was developed for L-LTP induction in the CA1 region of the hippocampus. The differential equation-based model represents actions of protein kinase A (PKA), MAP kinase (MAPK), and CaM kinase II (CAMKII) in the vicinity of the synapse, and activation of transcription by CaM kinase IV (CAMKIV) and MAPK. L-LTP is represented by increases in a synaptic weight. Simulations suggest that steep, supralinear stimulus-response relationships between stimuli (elevations in [Ca2+]) and kinase activation are essential for translating brief stimuli into long-lasting gene activation and synaptic weight increases. Convergence of multiple kinase activities to induce L-LTP helps to generate a threshold whereby the amount of L-LTP varies steeply with the number of tetanic electrical stimuli. The model simulates tetanic, theta-burst, pairing-induced, and chemical L-LTP, as well as L-LTP due to synaptic tagging. The model also simulates inhibition of L-LTP by inhibition of MAPK, CAMKII, PKA, or CAMKIV. The model predicts results of experiments to delineate mechanisms underlying L-LTP induction and expression. For example, the cAMP antagonist RpcAMPs, which inhibits L-LTP induction, is predicted to inhibit ERK activation. The model also appears useful to clarify similarities and differences between hippocampal L-LTP and long-term synaptic strengthening in other systems.
description: Accepted to Biophysical Journal. Single PDF, 7 figs included
Effect of Publicly Released Quality Information for US Hard Red Winter Wheat on Mexican Millers' Welfare
Creators: name: Gallardo, Rosa Karina
name: Lusk, Jayson L.
name: Holcomb, Rodney B.
name: Gallardo, Rosa Karina
name: Lusk, Jayson L.
name: Holcomb, Rodney B.
Publisher: name: Unknown
Year: 2008
Subjects: Agribusiness
Research and Development/Tech Change/Emerging Technologies

description: Entities have been providing quality related information to overseas wheat buyers as a response to the increased requests for this information. This study measures the value of information to Mexican millers. The value to Mexican millers is measured by the difference of the flour mill surplus and compensating variation.
Additional file 4 of Enhancer looping protein LDB1 modulates MYB expression in T-ALL cell lines in vitro by cooperating with master transcription factors
Creators: name: Li, Yan
name: Zhang, Zimu
name: Yu, Juanjuan
name: Yin, Hongli
name: Chu, Xinran
name: Cao, Haibo
name: Tao, Yanfang
name: Zhang, Yongping
name: Li, Zhiheng
name: Wu, Shuiyan
name: Hu, Yizhou
name: Zhu, Frank
name: Gao, Jizhao
name: Wang, Xiaodong
name: Zhou, Bi
name: Jiao, Wanyan
name: Wu, Yumeng
name: Yang, Yang
name: Chen, Yanling
name: Zhuo, Ran
name: Yang, Ying
name: Zhang, Fenli
name: Shi, Lei
name: Hu, Yixin
name: Pan, Jian
name: Hu, Shaoyan
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 4. Supplementary Figure 4. A. LDB1 gene knockdown validation by PCR verification of 6T-CEM and J.gamma1 cells submitted for sequencing. B. LDB1 protein knockdown validation by Western Blot verification of 6T-CEM and J.gamma1 cells submitted for sequencing. C. The qPCR analysis with cells of six days post-viral transduction showed that the expression levels of genes sustaining the hematopoietic stem cell differentiation, such as NOTCH1, MYB, and RUNX1, were decreased
Stefan Riedel, Die Basileia von Alexandria. Topographisch-urbanistische Untersuchungen zum ptolemäischen Königsviertel
Creators: name: Lembke, Katja
Publisher: name: Bonner Jahrbücher
Year: 2023

description: Rezension zu: Stefan Riedel, Die Basileia von Alexandria. Topographisch- urbanistische Untersuchungen zum ptolemäischen Königsviertel. Studies in Classical Archaeology, Band 9. Verlag Brepols, Turnhout 2020. XX und 454 Seiten mit 1 farbigen und 191 schwarzweißen Abbildungen.
description: Bonner Jahrbücher, Bd. 220.2020(2021): Bonner Jahrbücher
The radial profiles of the different mass components in galaxy clusters
Creators: name: Biviano, A.
name: Salucci, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: AIMS. To derive the mass profiles of the different luminous and dark components in clusters. METHODS. The cluster mass profile is determined by using the Jeans equation applied to the projected phase-space distribution of about 3000 galaxies members of 59 nearby clusters from the ESO Nearby Abell Cluster Survey. The baryonic and subhaloes mass components are determined from the galaxies' luminosity-density profiles through scaling relations between luminosities and baryonic and dark halo masses. The baryonic mass component associated to the intra-cluster gas is determined using X-ray data from ROSAT. RESULTS. The baryon-to-total mass fraction decreases from a value of 0.12 near the center, to 0.08 at the distance of 0.15 virial radii, then it increases again, to reach a value of 0.14 at the virial radius. Diffuse, cluster-scale, dark matter dominates at all radii, but its contribution to the total mass content decreases outwards to the virial radius, where the dark matter in subhaloes may contribute up to 23 %, and the baryons 14 %, of the total mass. The dark mass, and diffuse dark mass profiles are well fit by both cuspy and cored models. The subhaloes mass distribution is not fit by either model.
description: Version accepted for publication in A&A. 10 pages, 7 figures. Footnote 1, and caption to Fig.3.corrected
A model of manager-induced organisational stability in post-Soviet agriculture
Creators: name: Petrick, Martin
name: Carter, Michael R.
name: Petrick, Martin
name: Carter, Michael R.
Publisher: name: Unknown
Year: 2007
Subjects: subject: Farm Management
subject: Agricultural transition
subject: former Soviet Union
subject: social interaction effects
subject: farm restructuring.

description: Agricultural transition in the former Soviet Union has, surprisingly for many observers, not led to a widespread adoption of individual farming. This article attempts to understand some previously neglected forces behind this outcome. It develops a theoretical model of farm restructuring in which managers exploit the preferences of workers for conformity within a social reference group to cement their own power. The model provides a rationale for the persistent support among workers and managers to the status-quo organisation, despite the availability of a more efficient individual farming option. Based on empirical evidence, we argue that managers have an incentive to keep horizons of workers limited by sheltering them from pro-reform influences. Polar reform equilibria are generated that are consistent with the observed spatial patterns of restructuring. The model predicts that policies aiming at the establishment of independent farms will fail unless they induce a "big push" in reform attitudes among workers.
Forschungsfeld: Digitale Kunstgeschichte / Champ de recherche: Histoire de l’art numérique
Creators: name: Klammt, Anne
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2021

description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2019/2020
From target to projectile and back again: selfduality of high energy evolution
Creators: name: Kovner, Alex
name: Lublinsky, Michael
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove that the complete kernel for the high energy evolution in QCD must be selfdual. The relevant duality transformation is formulated in precise mathematical terms and is shown to transform the charge density into the functional derivative with respect to the single-gluon scattering matrix. This transformation interchanges the high and the low density regimes. We demostrate that the original JIMWLK kernel, valid at large density is indeed dual to the low denisity limit of the complete kernel derived recently in hep-ph/0501198.
description: 4 pages. References and comments added. To appear in PRL