cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fiche de présentation de Jeff Daniel Silva
Creators: name: LabexMed
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2017

description: Fiche de présentation de Jeff Daniel Silva, chercheur invité LabexMed 2017 accueilli au CNE
Category Theory Framework for Variability Models with Non-Functional Requirements
Creators: name: Munoz, Daniel-Jesus
name: Gurov, Dilian
name: Pinto, Monica
name: Fuentes, Lidia
Publisher: name: Zenodo
Year: 2021
Subjects: numerical variability model
feature
non-functional requirement
quality attribute
category theory

description: This is a Conference Presentation, please access and cite the published version of the respective publication: https://doi.org/10.1007/978-3-030-79382-1_24 Software Product Lines (SPLs) make use of Variability Models (VMs) as an input to automated reasoners, which are mainly used to generate optimal product configurations according to certain Quality Attributes (QAs). However, VMs and more specifically those including numerical features (i.e., NVMs), do not natively support QAs, and consequently, neither do automated reasoners commonly used in variability resolution. However, those satisfiability and optimisation problems have been covered and refined in other relational models such as databases. Category Theory (CT) is an abstract mathematical theory typically used to capture the common aspects of seemingly dissimilar algebraic structures. We propose a unified relational modelling framework subsuming the structured objects of VMs and QAs and their relationships into algebraic categories. This abstraction allows a combination of automated reasoners over different domains to analyse SPLs. The solutions optimisation can now be natively performed by a combination of automated theorem proving, hashing, balanced-trees and chasing algorithms. We validate this approach by means of the edge computing SPL tool HADAS.
description: Munoz, Pinto and Fuentes work is supported by the European Union's H2020 research and innovation programme under grant agreement DAEMON 101017109, by the projects co-financed by FEDER funds LEIA UMA18-FEDERJA-15, MEDEA RTI2018-099213-B-I00 and Rhea P18-FR-1081 and the PRE2019-087496 grant from the Ministerio de Ciencia e Innovación.
KOMMUNIKATIV YONDASHUV ASOSIDA INGLIZ TILINI O'QITISHNING ZAMONAVIY USULLARI
Creators: name: Shoira Nosirova Olimovna Toshkent Iqtisodiyot Universiteti Samarqand filiali Ingliz tili
Publisher: name: Zenodo
Year: 2025

description: Hozirda olib borilayotgan tadqiqotlarda kompetensiyaviy yondashuv asosida kommunikativ madaniyatini rivojlantirishda tizimli kontekstlarga katta e’tibor qaratiladi va ularning bu sohadagi samarali kasbiy bilimlarini rivojlantirishning muhim salohiyati ekanligini ko‘rish mumkin. Ushbu maqolada ingliz tilini o‘qitishda kommunikativ yondashuvning o‘rni, uning asosiy tamoyillari hamda til o‘rgatuvchi faoliyatda qo‘llaniladigan samarali uslublar haqida so‘z yuritiladi. Shuningdek, o‘quvchilarning og‘zaki nutqini rivojlantirish, mustaqil fikrlash va interaktiv mashg‘ulotlar orqali til kompetensiyasini oshirishga qaratilgan metodlar tahlil qilinadi.

Kalit so`zlar: kommunikativ metod, amaliy suhbat va muloqot, Kommunikativ yondashuv, grammatik qoidalar, tinglash, gapirish, o‘qish va yozish ko‘nikmalari, ochiq savollar va munozarali vaziyatlar
Conditional Probabilities in the Excursion Set Theory. Generic Barriers and non-Gaussian Initial Conditions
Creators: name: De Simone, Andrea
name: Maggiore, Michele
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2011
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: The excursion set theory, where density perturbations evolve stochastically with the smoothing scale, provides a method for computing the dark matter halo mass function. The computation of the mass function is mapped into the so-called first-passage time problem in the presence of a moving barrier. The excursion set theory is also a powerful formalism to study other properties of dark matter halos such as halo bias, accretion rate, formation time, merging rate and the formation history of halos. This is achieved by computing conditional probabilities with non-trivial initial conditions, and the conditional two-barrier first-crossing rate. In this paper we use the path integral formulation of the excursion set theory to calculate analytically these conditional probabilities in the presence of a generic moving barrier, including the one describing the ellipsoidal collapse, and for both Gaussian and non-Gaussian initial conditions. While most of our analysis associated with Gaussian initial conditions assumes Markovianity (top-hat in momentum space smoothing, rather than generic filters), the non-Markovianity of the random walks induced by non-Gaussianity is consistently accounted for. We compute, for a generic barrier, the first two scale-independent halo bias parameters, the conditional mass function and the halo formation time probability, including the effects of non-Gaussianities. We also provide the expression for the two-constant-barrier first-crossing rate when non-Markovian effects are induced by a top-hat filter function in real space.
description: 20 pages, 5 figures. Typos in Appendix B corrected and other minor corrections. Version to appear in MNRAS
A proof of a sumset conjecture of Erdős
Creators: name: Moreira, Joel
name: Richter, Florian Karl
name: Robertson, Donald
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 05D10, 11P70, 37A99, 46C99

description: In this paper we show that every set $A \subset \mathbb{N}$ with positive density contains $B+C$ for some pair $B,C$ of infinite subsets of $\mathbb{N}$, settling a conjecture of Erdős. The proof features two different decompositions of an arbitrary bounded sequence into a structured component and a pseudo-random component. Our methods are quite general, allowing us to prove a version of this conjecture for countable amenable groups.
description: 54 pages. Corrected proof of Theorem 3.22 and added Example 3.27 Keywords: sum sets, almost periodic functions, ultrafilters
Approximation of the Boltzmann Collision Operator Based on Hermite Spectral Method
Creators: name: Wang, Yanli
name: Cai, Zhenning
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Based on the Hermite expansion of the distribution function, we introduce a Galerkin spectral method for the spatially homogeneous Boltzmann equation with the realistic inverse-power-law models. A practical algorithm is proposed to evaluate the coefficients in the spectral method with high accuracy, and these coefficients are also used to construct new computationally affordable collision models. Numerical experiments show that our method captures the low-order moments very efficiently.
Informed Data Distribution Selection in a Self-predicting Storage System (CMU-PDL-06-101)
Creators: name: Thereska, Eno
name: Abd-El-Malek, Michael
name: Wylie, Jay J.
name: Dushyanth  Narayanan
name: Ganger, Gregory R.
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 80499 Data Format not elsewhere classified
subject: FOS: Computer and information sciences

description: Systems should be self-predicting. They should continuously monitor themselves and provide quantitative answers to What...if questions about hypothetical workload or resource changes. Self-prediction would significantly simplify administrators’ planning challenges, such as performance tuning and acquisition decisions, by reducing the detailed workload and internal system knowledge required. This paper describes and evaluates support for self-prediction in a cluster-based storage system and its application to What...if questions about data distribution selection.
Data from: Spatiotemporal dynamics of Nektonic biodiversity and vegetation shifts during the Smithian–Spathian Transition: Conodont and Palynomorph insights from Svalbard
Creators: name: Leu, Marc
name: Schneebeli, Elke
Publisher: name: Zenodo
Year: 2024
Subjects: sporomorph
conodont taxonomy
Triassic period

description: The dataset includes an Excel file with sporomorph counting of samples from the Stensiöfjellet section, Svalbard. Furthermore, it includes additional taxonomic notes on conodonts from the Stensiöfjellet section, Svalbard.
description: Funding provided by: Swiss National Science FoundationCrossref Funder Registry ID: https://ror.org/00yjd3n13Award Number: 200020_160055
Funding provided by: Swiss National Science FoundationCrossref Funder Registry ID: https://ror.org/00yjd3n13Award Number: CRSII5-180253
description: Two main sections were logged and samples taken: Stensiöfjellet A and Stensiöfjellet C sections, ca. 1.2 km apart. For conodonts, we collected 17 samples, each weighing approximately 10kg, from section Stensiöfjellet C. Of the 17 samples, 11 were taken from the Lusitaniadalen Member and 6 from the Vendomdalen Member, with varying spacing between samples ranging from 1 m to 60 m. The samples were dissolved using a ~ 10% buffered acetic acid solution following the procedure described by Jeppsson et al. (1999). The residues were concentrated by using sodium polytungstate (Jeppsson & Anehus 1999) as a heavy liquid for separation. They were then sieved using a 0.075-mm mesh, and the heavy fraction was handpicked under a binocular microscope. The selected conodont elements were illustrated using a scattered electron microscope (SEM) (JEOL JSM-6010) without the use of a sputter coater and a digital microscope (Keyence VHX 6000).

For palynological analysis, samples (n = 61 Stensiöfjellet A, Fig. 1) were cleaned, crushed, and weighed (15 g on average) and subsequently treated with concentrated hydrochloric and hydrofluoric acid as described by Traverse (2007). The residues were sieved over an 11-µm mesh screen. Samples were additionally treated with concentrated nitric acid and 30 s of ultrasonic vibration. Residues were sieved again over an 11-µm mesh screen. Slides are stored in the repository of the Palaeontological Institute and Museum, University of Zurich, and are found under PIMUZ A/VI 163 to PIMUZ A/VI 166.
A Multi-Method, Spatial Approach for Explaining the Appearance and Passage of Open Space Referenda
Creators: name: Heintzelman, Martin D.
name: Walsh, Patrick J.
name: Grzeskowiak, Dustin J.
name: Heintzelman, Martin D.
name: Walsh, Patrick J.
name: Grzeskowiak, Dustin J.
Publisher: name: Unknown
Year: 2012
Subjects: subject: Land Economics/Use
subject: Research Methods/ Statistical Methods
subject: Environmental Referenda
subject: Open Space
subject: Survival Model
subject: Spatial Econometrics
subject: Bayesian Probit

description: To guard against urban sprawl, many communities in the United States have begun enacting policies to preserve open space, often through local voter referenda. New Jersey sponsors such municipal action through the Green Acres Program by providing funding and low interest loans to towns that choose, through a referendum, to increase property taxes and spend the money raised on open space preservation for the purposes of conservation and/or recreation. Understanding which factors contribute to the appearance and success of these measures is important for policy makers and conservation advocates, not only in New Jersey, but across the United States. Although previous literature has examined this issue, this is the first study to account for spatial dependence/spatial autocorrelation and to explore dynamic issues through survival analysis. The traditional two stage model from the literature is extended by incorporating a Bayesian spatial probit for the first stage and a maximum-likelihood spatial error model in the second stage. A Cox – proportional hazard model is used to examine the timing of referenda appearance. Spatial dependence is found in the second stage of the analysis, indicating future studies should account for its influence. There is not strong evidence for spatial dependence or correlation in the first stage. The survival model is found to be a useful complement to the traditional probit analysis of the first stage.
In Search of an API for Scalable File Systems: Under the Table or Above it?
Creators: name: Swapnil  Patil
name: Gibson, Garth A
name: Ganger, Gregory R
name: Lopez, Julio
name: Polte, Milo
name: Wittawat  Tantisiroj
name: Xiao, Lin
Publisher: name: Carnegie Mellon University
Year: 2009
Subjects: subject: 80499 Data Format not elsewhere classified
subject: FOS: Computer and information sciences

description: “Big Data” is everywhere – both the IT industry and the scientific computing community are routinely handling terabytes to petabytes of data. This preponderance of data has fueled the development of data-intensive scalable computing (DISC) systems that manage, process and store massive data-sets in a distributed manner. For example, Google and Yahoo have built their respective Internet services stack to distribute processing (MapReduce and Hadoop), to program computation (Sawzall and Pig) and to store the structured output data (Bigtable and HBase). Both these stacks are layered on their respective distributed file systems, GoogleFS and Hadoop distributed FS , that are designed “from scratch” to deliver high performance primarily for their anticipated DISC workloads. However, cluster file systems have been used by the high performance computing (HPC) community at even larger scales for more than a decade. These cluster file systems, including IBM GPFS [28], Panasas PanFS [34], PVFS [26] and Lustre [21], are required to meet the scalability demands of highly parallel I/O access patterns generated by scientific applications that execute simultaneously on tens to hundreds of thousands of nodes. Thus, given the importance of scalable storage to both the DISC and the HPC world, we take a step back and ask ourselves if we are at a point where we can distill the key commonalities of these scalable file systems. This is not a paper about engineering yet another “right” file system or database, but rather about how do we evolve the most dominant data storage API – the file system interface – to provide the right abstraction for both DISC and HPC applications. What structures should be added to the file system to enable highly scalable and highly concurrent storage? Our goal is not to define the API calls per se, but to identify the file system abstractions that should be exposed to programmers to make their applications more powerful and portable. This paper highlights two such abstractions. First, we show how commodity large-scale file systems can support distributed data processing enabled by the Hadoop/MapReduce style of parallel programming frameworks. And second, we argue for an abstraction that supports indexing and searching based on extensible attributes, by interpreting BigTable [6] as a file system with a filtered directory scan interface.
Additional file 2 of Transcriptome sequencing and whole genome expression profiling of hexaploid sweetpotato under salt stress
Creators: name: Arisha, Mohamed
name: Aboelnasr, Hesham
name: Ahmad, Muhammad
name: Liu, Yaju
name: Tang, Wei
name: Gao, Runfei
name: Yan, Hui
name: Kou, Meng
name: Wang, Xin
name: Zhang, Yungang
name: Li, Qiang
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Computational Biology

description: Additional file 2. Detailed GO function classification of differentially expressed unigenes between control and different treatments.
Parameterizing the Supernova Engine and its Effects on Remnants and Basic Yields
Creators: name: Fryer, Chris L.
name: Andrews, Sydney
name: Even, Wesley
name: Heger, Alex
name: Safi-Harb, Samar
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Core-collapse supernova science is now entering an era where engine models are beginning to make both qualitative and quantitative predictions. Although the evidence in support of the convective engine for core-collapse supernova continues to grow, it is difficult to place quantitative constraints on this engine. Some studies have made specific predictions for the remnant distribution from the convective engine, but the results differ between different groups. Here we use a broad parameterization for the supernova engine to understand the differences between distinct studies. With this broader set of models, we place error bars on the remnant mass and basic yields from the uncertainties in the explosive engine. We find that, even with only 3 progenitors and a narrow range of explosion energies, we can produce a wide range of remnant masses and nucleosynthetic yields.
description: 14 pages, 10 figures, submitted to ApJ
Photoluminescence modification by high-order photonic band with abnormal dispersion in ZnO inverse opal
Creators: name: Noh, Heeso
name: Scharrer, Michael
name: Anderson, Mark A.
name: Chang, Robert P. H.
name: Cao, Hui
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We measured the angle- and polarization-resolved reflection and photoluminescence spectra of ZnO inverse opals. Significant enhancement of spontaneous emission is observed. The enhanced emission not only has good directionality but also can be linearly polarized. A detailed theoretical analysis and numerical simulation reveal that such enhancement is caused by the abnormal dispersion of a high-order photonic band. The frozen mode at a stationary inflection point of a dispersion curve can strongly modify the intensity, directionality and polarization of spontaneous emission.
description: 22 pages, 11 figures, figures modified, references added, more explanation added
ISM dust feedback from low to high mass stars
Creators: name: Falceta-Goncalves
name: D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The dust component of the interstellar medium (ISM) has been extensively studied in the past decades. Late-type stars have been assumed as the main source of dust to the ISM, but recent observations show that supernova remnants may play a role on the ISM dust feedback. In this work, I study the importance of low and high mass stars, as well as their evolutionary phase, on the ISM dust feedback process. I also determine the changes on the obtained results considering different mass distribution functions and star formation history. We describe a semi-empirical calculation of the relative importance of each star at each evolutionary phase in the dust ejection to the ISM. I compare the obtained results for two stellar mass distribution functions, the classic Salpeter initial mass function and the present day mass function. I used the evolutionary track models for each stellar mass, and the empirical mass-loss rates and dust-to-gas ratio. The relative contribution of each stellar mass depends on the used distribution. Ejecta from massive stars represent the most important objects for the ISM dust replenishment using the Salpeter IMF. On the other hand, for the present day mass function low and intermediate mass stars are dominant. Late-type giant and supergiant stars dominate the ISM dust feedback in our actual Galaxy, but this may not the case of galaxies experiencing high star formation rates, or at high redshifts. In those cases, SNe are dominant in the dust feedback process.
description: Accepted for publication by A&A
Improving Small File Performance in Object-based Storage (CMU-PDL-06-104)
Creators: name: Hendricks, James
name: Sambasivan, Raja R.
name: Shafeeq  Sinnamohideen
name: Ganger, Gregory R.
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 80499 Data Format not elsewhere classified
subject: FOS: Computer and information sciences

description: This paper proposes architectural refinements, server-driven metadata prefetching and namespace flattening, for improving the efficiency of small file workloads in object-based storage systems. Server driven metadata prefetching consists of having the metadata server provide information and capabilities for multiple objects, rather than just one, in response to each lookup. Doing so allows clients to access the contents of many small files for each metadata server interaction, reducing access latency and metadata server load. Namespace flattening encodes the directory hierarchy into object IDs such that namespace locality translates to object ID similarity. Doing so exposes namespace relationships among objects (e.g., as hints to storage devices), improves locality in metadata indices, and enables use of ranges for exploiting them. Trace-driven simulations and experiments with a prototype implementation show significant performance benefits for small file workloads.
Smart depth of field optimization applied to a robotised view camera
Creators: name: Mottelet, Stéphane
name: Germain, Luc de Saint
name: Mondin, Olivier
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The great flexibility of a view camera allows to take high quality photographs that would not be possible any other way. But making a given object into focus is a long and tedious task, although the underlying laws are well known. This paper presents the result of a project which has lead to the design of a computer controlled view camera and to its companion software. Thanks to the high precision machining of its components, and to the known optical parameters of lenses and sensor, we have been able to consider a reliable mathematical model of the view camera, allowing the acquisition of 3D coordinates to build a geometrical model of the object. Then many problems can be solved, e.g. minimizing the f-number while maintaining the object within the depth of field, which takes the form of a constrained optimization problem. All optimization algorithms have been validated on a virtual view camera before implementation on the prototype
description: 17 pages, 19 figures
Scale-free networks are rare
Creators: name: Broido, Anna D.
name: Clauset, Aaron
Publisher: name: arXiv
Year: 2018
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Molecular Networks (q-bio.MN)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: A central claim in modern network science is that real-world networks are typically "scale free," meaning that the fraction of nodes with degree $k$ follows a power law, decaying like $k^{-α}$, often with $2 < α< 3$. However, empirical evidence for this belief derives from a relatively small number of real-world networks. We test the universality of scale-free structure by applying state-of-the-art statistical tools to a large corpus of nearly 1000 network data sets drawn from social, biological, technological, and informational sources. We fit the power-law model to each degree distribution, test its statistical plausibility, and compare it via a likelihood ratio test to alternative, non-scale-free models, e.g., the log-normal. Across domains, we find that scale-free networks are rare, with only 4% exhibiting the strongest-possible evidence of scale-free structure and 52% exhibiting the weakest-possible evidence. Furthermore, evidence of scale-free structure is not uniformly distributed across sources: social networks are at best weakly scale free, while a handful of technological and biological networks can be called strongly scale free. These results undermine the universality of scale-free networks and reveal that real-world networks exhibit a rich structural diversity that will likely require new ideas and mechanisms to explain.
description: 14 pages, 9 figures, 2 tables, 5 appendices
Casimir forces between arbitrary compact objects: Scalar and electromagnetic field
Creators: name: Emig, T.
name: Jaffe, R. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop an exact method for computing the Casimir energy between arbitrary compact objects, both with boundary conditions for a scalar field and dielectrics or perfect conductors for the electromagnetic field. The energy is obtained as an interaction between multipoles, generated by quantum source or current fluctuations. The objects' shape and composition enter only through their scattering matrices. The result is exact when all multipoles are included, and converges rapidly. A low frequency expansion yields the energy as a series in the ratio of the objects' size to their separation. As examples, we obtain this series for two spheres with Robin boundary conditions for a scalar field and dielectric spheres for the electromagnetic field. The full interaction at all separations is obtained for spheres with Robin boundary conditions and for perfectly conducting spheres.
description: 24 pages, 3 figures, contribution to QFEXT07 proceedings
An Investigation of preferences of risks responses in Malaysia.pdf
Creators: name: Goh, Cheng Siew
Publisher: name: Northumbria University
Year: 2024
Subjects: classificationCode: 330202
subject: Building construction management and project planning
classificationCode: 330207
subject: Quantity surveying
classificationCode: 401005
subject: Risk engineering

description:   
An effective risk management system is significant in providing a better decision making framework to achieve project or organisational objectives. Risks cannot be avoided in such dynamic construction sector, irrespective of construction project size. An appropriate treatment plan should be adopted to counter different types of risks.
The selection of risk response should consider the magnitude of the risk significance and its impacts on the project objectives. The objectives of this paper are to identify risk responses taken by local construction players in facing with the risks and also to study the underlying reasons for the preference of risk retention in treatment of financial risk. A combination of questionnaire survey and interview was applied to investigate the selection of treatment plans in dealing with risks. Different risk treatment plans were selected to deal with the different risks in accordance to the risk nature and characteristic themselves. The questionnaire survey result shows that risk retention is the preferred strategy when responding to financial risk while risk control is chosen to react with time risk. A follow-up clarification by interview survey was carried out to further investigate respondents’ responses. This study could help in expanding the risk management knowledge in the Malaysian construction industry by increasing one’s understanding towards the suitability of risk responses employed for different kinds of risks.
A niche remedy for the dynamical problems of neutral theory
Creators: name: Noble, Andrew E.
name: Fagan, William F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: We demonstrate how niche theory and Hubbell's original formulation of neutral theory can be blended together into a general framework modeling the combined effects of selection, drift, speciation, and dispersal on community dynamics. This framework connects many seemingly unrelated ecological population models, and allows for quantitative predictions to be made about the impact of niche stabilizing and destabilizing forces on population extinction times and abundance distributions. In particular, the existence of niche stabilizing forces in our blended framework can simultaneously resolve two major problems with the dynamics of neutral theory, namely predictions of species lifetimes that are too short and species ages that are too long.
description: 47 pages, 4 figures, Accepted to Theoretical Ecology
What Do Property Values Really Tell Us? A Hedonic Study of Underground Storage Tanks
Creators: name: Guignet, Dennis
name: Guignet, Dennis
Publisher: name: Unknown
Year: 2012
Subjects: subject: Land Economics/Use
subject: hedonic analysis
subject: housing prices
subject: leaking underground storage tanks
subject: LUST
subject: contaminated sites
subject: groundwater contamination
subject: remediation benefits

description: Hedonic property value models are widely used, but are susceptible to omitted variable bias and potentially invalid conjectures regarding the assumed measure of environmental quality. This paper focuses on an application where both are of particular concern: leaking underground storage tanks. I estimate a hedonic model using quasi-experimental and spatial econometric techniques. Similar to previous studies, I examine how house prices vary with distance to the disamenity. This approach yields little evidence that prices are adversely impacted. However, to better measure risks, I utilize home-specific data on correspondence from environmental regulators, and find a 9-12% depreciation when households are well-informed.
Extremizability of Fourier restriction to the paraboloid
Creators: name: Stovall, Betsy
Publisher: name: arXiv
Year: 2018
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this article, we prove that all global, nonendpoint Fourier restriction inequalities for the paraboloid in $\mathbb R^{1+d}$ have extremizers and that $L^p$-normalized extremizing sequences are precompact modulo symmetries. This result had previously been established for the case $q=2$. In the range where the boundedness of the restriction operator is still an open question, our result is conditional on improvements toward the restriction conjecture.
description: Some typos were corrected and arguments expanded in several places
title: Affiche rencontres Chercheurs invités 2013
Creators: name: LabexMed
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Rencontres Chercheurs invités, organisées dans le cadre du LabexMed.
Soft masses in superstring models with anomalous U(1) symmetries
Creators: name: Scrucca, Claudio A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the general structure of soft scalar masses emerging in superstring models involving anomalous U(1) symmetries, with the aim of characterizing more systematically the circumstances under which they can happen to be flavor universal. We consider both heterotic orbifold and intersecting brane models, possibly with several anomalous and non-anomalous spontaneously broken U(1) symmetries. The hidden sector is assumed to consist of the universal dilaton, Kahler class and complex structure moduli, which are supposed to break supersymmetry, and a minimal set of Higgs fields which compensate the Fayet-Iliopoulos terms. We leave the superpotential that is supposed to stabilize the hidden sector fields unspecified, but we carefully take into account the relations implied by gauge invariance and the constraints required for the existence of a metastable vacuum with vanishing cosmological constant. The results are parametrized in terms of a constrained Goldstino direction, suitably defined effective modular weights, and the U(1) charges and shifts. We show that the effect induced by vector multiplets strongly depends on the functional form of the Kahler potential for the Higgs fields. We find in particular that whenever these are charged matter fields, like in heterotic models, the effect is non-trivial, whereas when they are shifting moduli fields, like in certain intersecting brane models, the effect may vanish.
description: 35 pages, LaTex
Improving Index Performance through Prefetching (CMU-CS-00-177)
Creators: name: Shimin  Chen
name: Gibbons, Phillip B.
name: Mowry, Todd C.
Publisher: name: Carnegie Mellon University
Year: 2001
Subjects: subject: 80499 Data Format not elsewhere classified
subject: FOS: Computer and information sciences

description: This paper proposes and evaluates Prefetching B+-Trees (pB+-Trees), which use prefetching to accelerate two important operations on B+-Tree indices: searches and range scans. To accelerate searches, pB+-Trees use prefetching to effectively create wider nodes than the natural data transfer size: e.g., eight vs. one cache lines or disk pages. These wider nodes reduce the height of the B+-Tree, thereby decreasing the number of expensive misses when going from parent tochild without significantly increasing the cost of fetching a given node. Our results show that this technique speeds up search and update times by a factor of 1.2-1.5 for main-memory B+-Trees. In addition, it outperforms and is complementary to "Cache-Sensitive B+-Trees." To accelerate range scans, pB+-Trees provide arrays of pointers to their leaf nodes. These allow the pB+-Tree to prefetch arbitrarily far ahead, even for nonclustered indices, thereby hiding the normally expensive cache misses associated with traversing the leaves within the range. Our results show that this technique yields over a sixfold speedup on range scans of 1000+ keys. Although our experimental evaluation focuses on main memory databases, the techniques that we propose are also applicable to hiding disk latency.
No hair theorems for stationary axisymmetric black holes
Creators: name: Bhattacharya, Sourav
name: Lahiri, Amitabha
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a non-perturbative proof of the no hair theorems corresponding to scalar and Proca fields for stationary axisymmetric de Sitter black hole spacetimes. Our method also applies to asymptotically flat and under a reasonable assumption, to asymptotically anti-de Sitter spacetimes.
description: v2, 10pp; minor changes, added references
Dynamical formation of Proca stars and quasi-stationary solitonic objects
Creators: name: Di Giovanni, Fabrizio
name: Sanchis-Gual, Nicolas
name: Herdeiro, Carlos A. R.
name: Font, José A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We perform fully non-linear numerical simulations within the spherically symmetric Einstein-(complex)Proca system. Starting with Proca field distributions that obey the Hamiltonian, momentum and Gaussian constraints, we show that the self-gravity of the system induces the formation of compact objects, which, for appropriate initial conditions, asymptotically approach stationary soliton-like solutions known as Proca stars. The excess energy of the system is dissipated by the mechanism of \textit{gravitational cooling} in analogy to what occurs in the dynamical formation of scalar boson stars. We investigate the dependence of this process on the phase difference between the real and imaginary parts of the Proca field, as well as on their relative amplitudes. Within the timescales probed by our numerical simulations the process is qualitatively insensitive to either choice: the phase difference and the amplitude ratio are conserved during the evolution. Thus, whereas a truly stationary object is expected to be approached only in the particular case of equal amplitudes and opposite phases, quasi-stationary compact solitonic objects are, nevertheless, formed in the general case.
title: ADCO, Cart. 186 (11 H 71), f. 0095v
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la Côte-d'Or, C
art. 186 (11 H 71). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la
 Côte-d'Or, Cart. 186 (11 H 71), f. 0095v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-
project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Multi-gluon field approach of QCD
Creators: name: Morsch, H. P.
name: Zupranski, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The decay of 2-gluon colour singlets in quarks: 2g --> q-qbar +2q-2qbar has been simulated with the Monte-Carlo method, taking into account an effective 1-gluon exchange interaction between the emitted quarks, which was folded with a 2-gluon density determined self-consistently. 2-gluon densities were found with different radii, which correspond to 0^{++} glueballs of the size of light q-qbar, s-sbar, c-cbar, b-bbar, and heavier q-qbar systems. Binding potentials between the two gluons have been deduced, which are consistent with the confinement potential from lattice results. However, self-consistency for the deduction of 2-gluon densities requires massless (or very light) quarks for all flavours. The masses are given by the binding energies of quarks and gluons, yielding excitation spectra of 0^{++} glueballs and Phi, J/Psi, and Upsilon states consistent with observation. The sum of q-q potentials yields a strong coupling alpha_s consistent with the available data up to large momenta. The nucleon is described by a gluonium state coupled to 3 valence quarks, yielding ground state and radial excitations consistent with experiment. Finally, we discuss the compressibility of the nucleon and relate it to that of nuclear matter.
description: Talk presented at the XXX. Mazurian Lakes Conference, Sept. 2-9, 2007, Piaski, Poland
Statistical methods for tissue array images - algorithmic scoring and co-training
Creators: name: Yan, Donghui
name: Wang, Pei
name: Linden, Michael
name: Knudsen, Beatrice
name: Randolph, Timothy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Methodology (stat.ME)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Recent advances in tissue microarray technology have allowed immunohistochemistry to become a powerful medium-to-high throughput analysis tool, particularly for the validation of diagnostic and prognostic biomarkers. However, as study size grows, the manual evaluation of these assays becomes a prohibitive limitation; it vastly reduces throughput and greatly increases variability and expense. We propose an algorithm - Tissue Array Co-Occurrence Matrix Analysis (TACOMA) - for quantifying cellular phenotypes based on textural regularity summarized by local inter-pixel relationships. The algorithm can be easily trained for any staining pattern, is absent of sensitive tuning parameters and has the ability to report salient pixels in an image that contribute to its score. Pathologists' input via informative training patches is an important aspect of the algorithm that allows the training for any specific marker or cell type. With co-training, the error rate of TACOMA can be reduced substantially for a very small training sample (e.g., with size 30). We give theoretical insights into the success of co-training via thinning of the feature set in a high-dimensional setting when there is "sufficient" redundancy among the features. TACOMA is flexible, transparent and provides a scoring process that can be evaluated with clarity and confidence. In a study based on an estrogen receptor (ER) marker, we show that TACOMA is comparable to, or outperforms, pathologists' performance in terms of accuracy and repeatability.
description: Published in at http://dx.doi.org/10.1214/12-AOAS543 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Low gas flow rates reduce early preterm lung injury in preterm lambs_ARRIVE_Author Checklist
Creators: name: TINGAY, DAVID
Publisher: name: The University of Melbourne
Year: 2024
Subjects: classificationCode: 321303
subject: Neonatology

description: ARRIVE Statement for the Manuscript entitled 'Low gas flow rates reduce early preterm lung injury in preterm lambs'
Group Communication: Helping or Obscuring Failure Diagnosis? (CMU-PDL-06-107)
Creators: name: Pertet, Soila
name: Gandhi, Rajeev
name: Narasimhan, Priya
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 80499 Data Format not elsewhere classified
subject: FOS: Computer and information sciences

description: Replicated client-server systems are often based on underlying group communication protocols that provide totally ordered, reliable delivery of messages. However, in the face of a performance fault (e.g, memory leak, packet loss) at a single node, group communication protocols can cause correlated performance degradations at non-faulty nodes. We explore the impact of performance-degradation faults on token-ring and quorum-based group communication protocols in replicated systems. By empirically evaluating these protocols, in the presence of a variety of injected faults, we investigate which metrics are the most/least appropriate for failure diagnosis. We show that group communication protocols can both help and obscure root-cause analysis, and present an approach for fingerpointing the faulty node by monitoring OS-level and protocol-level metrics. Our empirical evaluation suggests that the root-cause of the failure is either the node exhibiting the most anomalies in a given window of time or the node with an "odd-man-out" behavior, e.g., if a node displays a surge in context-switch rate while the other nodes display a dip in the same metric.
Validity of abundances derived from spaxel spectra of the MaNGA survey
Creators: name: Pilyugin, L. S.
name: Grebel, E. K.
name: Zinchenko, I. A.
name: Nefedyev, Y. A.
name: Shulga, V. M.
name: Wei, Han
name: Berczik, P. P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We measured the emission lines in the spaxel spectra of MaNGA galaxies in order to determine the abundance distributions therein. It has been suggested that the strength of the low-ionization lines, R_2, N_2, and S_2 may be increased (relative to Balmer lines) in (some) spaxel spectra of the MaNGA survey due to a contribution of the radiation of the diffuse ionized gas. Consequently, the abundances derived from the spaxel spectra through strong-line methods may suffer from large errors. We examined this expectation by comparing the behaviour of the line intensities and the abundances estimated through different calibrations for slit spectra of HII regions in nearby galaxies, for fibre spectra from the SDSS, and for spaxel spectra of the MaNGA survey. We found that the S_2 strength is increased significantly in the fibre and spaxel spectra. The mean enhancement changes with metallicity and can be as large as a factor of 2. The mean distortion of R_2 and N_2 is less than a factor of 1.3. This suggests that Kaufmann et al.'s demarcation line between AGNs and HII regions in the BPT diagram is a useful criterion to reject spectra with significantly distorted strengths of the N_2 and R_2 lines. We find that the three-dimensional R calibration, which uses the N_2 and R_2 lines, produces reliable abundances in the MaNGA galaxies. The one-dimensional N2 calibration produces either reliable or wrong abundances depending on whether excitation and N/O abundance ratio in the target region (spaxel) are close to or differ from those parameters in the calibrating points located close to the calibration relation. We then determined abundance distributions within the optical radii in the discs of 47 MaNGA galaxies. The optical radii of the galaxies were estimated from the surface brightness profiles constructed based on the MaNGA observations.
description: 19 pages, 15 figures, accepted for publication in A&A
Revisiting regularization with Kaluza-Klein states and Casimir vacuum energy from extra dimensional spaces
Creators: name: Matsui, Hiroki
name: Matsumoto, Yoshio
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the present paper, we investigate regularization of the one-loop quantum corrections with infinite Kaluza-Klein (KK) states and evaluate Casimir vacuum energy from extra dimensions. The extra dimensional models always involve the infinite massless or massive Kaluza-Klein states, and therefore, the regularization of the infinite KK corrections is highly problematic. In order to avoid the ambiguity, we adopt the proper time integrals and the Riemann zeta function regularization in evaluating the summations of infinite KK states. In the calculation, we utilize the KK regularization method with exchanging the infinite summations and the infinite loop integrals. At the same time, we also evaluate the correction by the the dimensional regularization method without exchanging the summations and the loop integrals. Then, we clearly show that the regularized Casimir corrections from the KK states have the form of $\propto 1/R^2$ for the Higgs mass and $\propto 1/R^4$ for the cosmological constant, where $R$ is the compactification radius. We also evaluate the Casimir energy in supersymmetric extra-dimensional models. The contributions from bulk fermions and bulk bosons are not offset because we choose SUSY breaking boundary conditions. The non-zero supersymmetric Casimir corrections from extra dimensions undoubtedly contribute to the Higgs mass and the cosmological constant. We conclude the coefficients of such corrections are enhanced compared to the case without bulk supersymmetry.
description: 8 pages, published version in PRD