cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hybrid Communication Architecture HCA
Creators: name: Visala, Kari
Publisher: name: arXiv
Year: 2014
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: 68M10

description: The beginning of the 21st century has seen many projects on distributed hash tables, both research and commercial. One of their aims has been to replace the first generation of file sharing software with scalable peer-to-peer architectures. On other fronts, the same techniques are applied, for example, to content delivery networks, streaming networks, cooperative caches, distributed file systems, and grid computing architectures for scientific use. This trend has emerged because with cooperative peers it is possible to asymptotically enhance the use of resouces in sharing of data compared to the basic client-server architecture. The need for distribution of data is wide and one could argue that it is as fundamental a building block as the message passing of the Internet. As an answer to this need a new scalable architecture is introduced: Hybrid Communication Architecture (HCA), which provides both data sharing and message passing as communication primitives for applications. HCA can be regarded as an abstraction layer for communication which is further encapsulated by a higher-level middleware. HCA is aimed at general use, and it is not designed for any particular application. One key idea is to combine data sharing with streaming since together they enable many applications not easily implementable with only one of these features. For example, a game application could share the game world state between clients and modify it by using streaming. The other distinctive feature of the system is the use of knowledge of the physical network topology in the optimization of the communication. With a feasible business model, fault-tolerance, and security features, HCA is aimed eventually for real-life adoption. This thesis presents the specification of the C++ client interface of HCA and the architecture and protocol of the distributed nodes forming the implementation.
description: 120 pages
Thermodynamics of spin-1/2 fermions on coarse temporal lattices using automated algebra
Creators: name: Czejdo, A. J.
name: Morrell, K. J.
name: Carter, N.
name: Drut, J. E.
Publisher: name: The Royal Society
Year: 2024

description: Recent advances in automated algebra for dilute Fermi gases in the virial expansion, where coarse temporal lattices were found advantageous, motivate the study of more general computational schemes that could be applied to arbitrary densities, beyond the dilute limit where the virial expansion is physically reasonable. We propose here such an approach by developing what we call the Quantum Thermodynamics Computational Engine (QTCE). In QTCE, the imaginary-time direction is discretized and the interaction is accounted for via a quantum cumulant expansion, where the coefficients are expressed in terms of non-interacting expectation values. The aim of QTCE is to enable the systematic resolution of interaction effects at fixed temporal discretization, as in lattice Monte Carlo calculations, but here in an algebraic rather than numerical fashion. Using this approach, in combination with numerical integration techniques (both known and alternative ones proposed here), we explore the thermodynamics of spin-1/2 fermions across spatial dimensions, focusing on the unitary limit. We find that, remarkably, extremely coarse temporal lattices, when suitably renormalized using known results from the virial expansion, yield stable partial sums for QTCE's cumulant expansion that are qualitatively and quantitatively correct in wide regions (when compared with known experimental results). This article is part of the theme issue 'The liminal position of Nuclear Physics: from hadrons to neutron stars'.
title: Epistemic Logic Programs
Creators: name: Strasser, Anton
Publisher: name: TU Wien
Year: 2022
Subjects: subject: Answer Set Programmingung
subject: Epistemische Logik
subject: answer set programming
subject: epistemic logic

description: Answer Set Programming (ASP) mit epistemischen Spezifikationen erweitert die Sprache der disjunktiven Logikprogramme (DLP) um die epistemischen Modaloperatoren K und M, die ausdrücken, dass eine Formel in allen Answer Sets bzw. in mindestens einem Answer Set wahr ist. Da die Erfüllbarkeit unter Modaloperatoren ein Konzept ist, das über eine Sammlung von Answer Sets, die World View genannt wird, definiert ist, kann die Berechnung der Answer Sets eines Programms mit epistemischen Spezifikationen nicht direkt auf die gleiche Aufgabe reduziert werden wie für ein gewöhnliches DLP-Programm. Stattdessen generieren aktuelle Algorithmen eine Obermenge von Answer Sets, indem sie ein spezielles Programm auswerten,um mögliche Lösungen zu generieren und falsche Lösungen in einer Nachprüfung auszusortieren. In dieser Arbeit wird ein neuartiger Ansatz zur Auswertung epistemischer Logikprogramme (ELP) vorgestellt, der auf hex-Programmen basiert. Letztere sind eine weitere Erweiterung von DLP in Richtung externer Rechenquellen.Konkret basiert unser Algorithmus zur Auswertung von ELP-Programmen auf hex-Programmen, die deklarative Prüfregeln mit externen Atomen enthalten. Darüber hinaus stellen wir eine Implementierung des Algorithmus und seine experimentelle Auswertung vor, die deutliche Verbesserungen gegenüber einer Referenzimplementierung zeigt.
description: Answer set programming (ASP) with epistemic specifications extends the language of disjunctive logic programs (DLP) to include the epistemic modal operators K and M,which express that a formula is true in all answer sets and at least one answer set,respectively. Since satisfiability under modal operators is a concept defined over a collection of answer sets called world view, computing the answer sets of a program with epistemic specifications cannot be directly reduced to the same task as for an ordinary DLP program. Instead, current algorithms generate a superset of answer sets by evaluating a special program to generate possible solutions and sorting out incorrect solutions in a post-check. In this thesis, we present a novel approach to evaluating epistemic logic programs (ELP) based on hex programs. The latter area further extension of DLP towards external computational sources. Specifically,our algorithm for evaluating ELP programs is based on hex programs that contain declarative checking rules with external atoms. Moreover, we present an implemen-tation of the algorithm and its experimental evaluation, which shows significant improvements over a reference implementation.
Drosophila melanogaster Set8 and L(3)mbt function in gene expression independently of histone H4 lysine 20 methylation.
Creators: name: Huynh, Mai
name: Hill, Christina A
name: Crain, Aaron T
name: Duronio, Robert J
name: Butler, Megan B
name: McGinty, Robert K
Publisher: name: Cold Spring Harbor Laboratory
Year: 2024

description: Monomethylation of lysine 20 of histone H4 (H4K20me1) is catalyzed by Set8 and thought to play important roles in many aspects of genome function that are mediated by H4K20me binding proteins. We interrogated this model in a developing animal by comparing in parallel the transcriptomes of Set8 null, H4 K20R/A, and l(3)mbt mutant Drosophila melanogaster. We found that the gene expression profiles of H4 K20A and H4 K20R larvae are markedly different than Set8 null larvae despite similar reductions in H4K20me1. Set8 null mutant cells have a severely disrupted transcriptome and fail to proliferate in vivo, but these phenotypes are not recapitulated by mutation of H4 K20, indicating that the developmental defects of Set8 null animals are largely due to H4K20me1-independent effects on gene expression. Furthermore, the H4K20me1 binding protein L(3)mbt is recruited to the transcription start sites of most genes independently of H4K20me even though genes bound by L(3)mbt have high levels of H4K20me1. Moreover, both Set8 and L(3)mbt bind to purified H4K20R nucleosomes in vitro. We conclude that gene expression changes in Set8 null and H4 K20 mutants cannot be explained by loss of H4K20me1 or L(3)mbt binding to chromatin and therefore that H4K20me1 does not play a large role in gene expression.
Digital Investigation of Security Attacks on Cardiac Implantable Medical Devices
Creators: name: Ellouze, Nourhene
name: Rekhis, Slim
name: Allouche, Mohamed
name: Boudriga, Noureddine
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cryptography and Security (cs.CR)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: A Cardiac Implantable Medical device (IMD) is a device, which is surgically implanted into a patient's body, and wirelessly configured using an external programmer by prescribing physicians and doctors. A set of lethal attacks targeting these devices can be conducted due to the use of vulnerable wireless communication and security protocols, and the lack of security protection mechanisms deployed on IMDs. In this paper, we propose a system for postmortem analysis of lethal attack scenarios targeting cardiac IMDs. Such a system reconciles in the same framework conclusions derived by technical investigators and deductions generated by pathologists. An inference system integrating a library of medical rules is used to automatically infer potential medical scenarios that could have led to the death of a patient. A Model Checking based formal technique allowing the reconstruction of potential technical attack scenarios on the IMD, starting from the collected evidence, is also proposed. A correlation between the results obtained by the two techniques allows to prove whether a potential attack scenario is the source of the patient's death.
description: In Proceedings AIDP 2014, arXiv:1410.3226
Marginal scalar and Proca clouds around Reissner-Nordström black holes
Creators: name: Sampaio, Marco O. P.
name: Herdeiro, Carlos
name: Wang, Mengjie
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Massive scalar test fields around Kerr black holes can form quasi-bound states with complex frequencies. Some of these states decay in time, but some others -- in the superradiant regime -- grow, causing a superradiant instability. Precisely at the threshold between decaying and growing modes, there exist bound states with real frequency, known as scalar clouds. Fully non-linear counterparts of these clouds have been shown to yield Kerr black holes with scalar hair. Here, we consider massive, (electrically) charged, test scalar and Proca fields on the background of Reissner-Nordström black holes. By computing the quasi-bound state frequencies, we establish that no such states exist in the superradiant regime for the Proca field -- a similar behavior to that known for scalar fields. But decaying quasi-bound states with an arbitrarily small imaginary part of the frequency exist and thus which are arbitrarily long lived. In the limit of vanishing imaginary part of the frequency, the field does not trivialize and we dub the corresponding configurations as marginal (charged) scalar or Proca clouds, since they are only marginally bound. We comment on the possible existence of non-linear counterparts to these marginal clouds.
description: 12 pages, 5 figures, 2 tables
New Preshower detector for DIRAC Experiment
Creators: name: Pentia, M.
name: Aogaki, S.
name: Dumitriu, D.
name: Fluerasu, D.
name: Gugiu, M.
name: Yazkov, V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Preshower (PSh) detector is a component of the DIRAC setup. It is designed to improve rejection efficiency of e-e+ pairs background in the ππ and Kπ pair measurement. To increase the overall efficiency, a new two-layer structure scintillator Preshower detector has been realized in the region where the Nitrogen Cherenkov detector has been shortened to introduce new detectors. The new Preshower-Cherenkov combination ensures the electron rejection efficiency better than 99.9% in momentum region 1-7 GeV/c.
description: to be published in NIMA
La géomorphologie face aux activités touristiques sur le plateau structural de Bucegi, Roumanie
Creators: name: Werren, Gabriela
Publisher: name: Unknown
Year: 0
Subjects: subject: Géomorphologie
subject: tourisme
subject: impact anthropique
subject: risque géomorphologique
subject: Roumanie
subject: geomorphosite

description: Le massif de Bucegi, situé dans la zone de courbure des Carpathes roumaines constitue un centre touristique de tradition en Roumanie. Structurellement un synclinal perché, sa partie haute est formée d’étendus plateaux structuraux qui évoluent actuellement surtout par l’action des processus fluviatiles à caractère torrentiel et des processus cryogéniques. Le tourisme y a une longue tradition, mais il a connu un développement très fort depuis les années 60. Le tourisme y pratiqué a un caractère de masse, avec la concentration des activités et des usages dans quelques points qui correspondent à l’emplacement des cabanes et des point terminus de remontées mécaniques. L’interaction entre tourisme et géomorphologie s’exprime par ce que la morphologie des plateaux contribue à la création de l’offre touristique première. En tant que ressource touristique, elle joue le rôle de cadre et d’objet de l’activité touristique. L’on valorise surtout l’aspect esthétique et économique de la morphologie, en laissant de côté son intérêt scientifique ou culturel. Les objets représentatifs ou rares sont insuffisamment protégés, bien qu’on ait institué depuis l’an 1990 le Parc Naturel Bucegi. Dans les conditions d’un tourisme agressif et supradimensionné et de mesures de protection inefficaces, les impacts sur la dynamique géomorphologique sont de taille. Ils s’expriment surtout par l’intensification des processus de type torrentiel dans les aires occupées par les nombreux chemins pédestres et autour des cabanes et autres objectifs touristiques et utilitaires. Le tourisme domine par conséquent la dynamique naturelle, sans pouvoir échapper aux risques géomorphologiques induits par sa présence. Protéger les sites les plus menacés et repenser le tourisme dans la zone est indispensable pour rétablir un équilibre entre les systèmes naturel et anthropique
The biases of Spitzer-selected clusters and the discovery of almost 200 z > 1.3 (proto)clusters in the LSST deep drilling fields.
Creators: name: Gully, Harry
Publisher: name: Zenodo
Year: 2023

description: The most efficient means of detecting high redshift (proto)clusters is by identifying galaxy overdensities in a Spitzer/IRAC colour-selected sample that effectively selects z > 1.3 galaxies, regardless of galaxy age or type. Its simplicity and efficacy have resulted in it being one of the most widely used (proto)cluster detection methods to date (e.g., ISCS, IDCS, CARLA, Papovich 2008), with the majority of known high redshift clusters discovered using it. While this method has been used extensively in the literature, its biases are poorly understood, bringing into question how representative this sample of (proto)clusters is compared to the wider population. We therefore study its biases through comprehensive testing on a mock catalogue in the form of a lightcone. To examine the Spitzer selection method, we matched the lightcone to the IRAC data to a depth of 22.75 mag, and optimised the method to give us the purest sample. We find that the Spitzer-selected (proto)cluster sample is highly incomplete (~4%) and heavily biased towards larger, richer, more massive, and more centrally concentrated (proto)clusters. This bias may explain the disparity in quenched fractions and galaxy scaling relations found in (proto)clusters selected by different methods. Finally, we applied the optimised Spitzer-selection method on a set of LSST's deep drilling fields, covering ~30 deg^2, locating 189 candidate (proto)clusters. We estimate that 60-80% of the identified candidates are likely to be genuine (proto)clusters, which is corroborated by a ~4sigma stacked X-ray signal from these structures. With knowledge of their selection biases and their homogeneity, in addition to the LSST deep drilling fields soon to become the most studied fields in astronomy, the protoclusters in our sample are the ideal laboratories for future cluster formation and galaxy evolution studies.
title: Pour une géographie des entrées de ville : les leçons du contexte lausannois
title: Essai d’urbanologie critique
titleType: Subtitle
Creators: name: Schneeberger, Ludovic
Publisher: name: Unknown
Year: 0
Subjects: subject: Entrée de ville
subject: limite
subject: porte
subject: symbolisme
subject: zone tampon
subject: non-lieu
subject: Zwischenstadt (entre-ville)
subject: gated community
subject: ville archétype
subject: Lausanne

description: L’entrée en ville, caractérisée autrefois par le franchissement de la muraille au travers de la porte, s’est muée en une zone tampon. L’entrée en ville implique par conséquent l’étude de la limite de la ville définie comme un invariant structural urbain. Par une urbanologie des entrées de ville de Lausanne, nous questionnons, au-delà du paysage des zones d’entrée de ville, le rapport qu’entretient l’entité «ville» avec sa limite
Disruptive digital transformation with SENSIBLE (Sequestered and Synergistic Blockchain Ecosystem)
Creators: name: Kshirsagar, Meghana
name: Vaidya, Gauri
name: Ryan, Conor
Publisher: name: F1000 Research Limited
Year: 2023

description: Implementing disruptive digital transformation in the healthcare ecosystem empowers the shift toward the creation of large-scale patient-centric digital models. This can revolutionize the healthcare industry and holds the potential to radically impact societies with improved patient care in the future. One such disruptive digital transformation is seamless integration and secured interoperability of the patient’s data across the healthcare network. Seamless integration of fragmented health data sources and secured data sharing frameworks equipping clinicians with the power of real-time access to a single view of the current patient data is vital in the context of delivering precisely personalized healthcare. Our ongoing research harnesses the power of blockchains as a backbone for secure sensitive data sharing whereas knowledge graphs facilitate integrating disparate data sources to visualize and create an information-rich single patient view. We present “SENSIBLE”, Sequestered, and Synergistic Blockchain Ecosystem for the safe sharing of patient data. SENSIBLE facilitates the patient-privacy preserving principle where any of the entities in the patient data requires the data owner’s consent before sharing it with the healthcare providers. This holds the promise of delivering precision medicine through the design of patient-centric models leading to greater operational ease.
Frustration and Dzyaloshinsky-Moriya anisotropy in the kagome francisites Cu$_3$Bi(SeO$_3)_2$O$_2$X
Creators: name: Rousochatzakis, Ioannis
name: Richter, Johannes
name: Zinke, Ronald
name: Tsirlin, Alexander A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the antiferromagnetic canting instability of the spin-1/2 kagome ferromagnet, as realized in the layered cuprates Cu$_3$Bi(SeO$_3)_2$O$_2$X (X=Br, Cl, and I). While the local canting can be explained in terms of competing exchange interactions, the direction of the ferrimagnetic order parameter fluctuates strongly even at short distances on account of frustration which gives rise to an infinite ground state degeneracy at the classical level. In analogy with the kagome antiferromagnet, the accidental degeneracy is fully lifted only by non-linear 1/S corrections, rendering the selected uniform canted phase very fragile even for spins-1/2, as shown explicitly by coupled-cluster calculations. To account for the observed ordering, we show that the minimal description of these systems must include the microscopic Dzyaloshinsky-Moriya interactions, which we obtain from density-functional band-structure calculations. The model explains all qualitative properties of the kagome francisites, including the detailed nature of the ground state and the anisotropic response under a magnetic field. The predicted magnon excitation spectrum and quantitative features of the magnetization process call for further experimental investigations of these compounds.
description: 21 pages, 6 figures
Systemic Predictive Safety Analysis of Pedestrian Crashes for Montgomery County’s Vision Zero Program
Creators: name: Kumfer, Wesley
name: Lan, Bo
name: Frizzelle, Brian
name: McGowan, Jesse Cohn
name: Thomas, Libby
name: Nordback, Krista
name: Vann, Mike
Publisher: name: SAGE Publications
Year: 2024

description: The goal of Vision Zero is the prevention of all traffic fatalities and serious injuries. Although traditional transportation planning is reactive to locations where serious crashes occur, some agencies are taking a more proactive approach to safety to improve locations with high expected crashes before someone is seriously injured or killed. This paper presents the results of a systemic safety analysis that produced two pedestrian-related safety performance functions for Montgomery County, MD, including 1) motor vehicle crashes with pedestrians at intersections at night and 2) through-movement motor vehicle crashes with pedestrians at road sections. These models were built using negative binomial regression of police-reported crash data collected from 2015 to 2019 for most of the county road network integrated with land use-, demographic-, and roadway variables collected by the Montgomery County Planning Department for 16,387 intersections (stop-controlled and signalized) and 29,715 segments (all functional classifications except freeways). Both models identified key transportation-related exposure variables, including motor vehicle and pedestrian volumes, proximity to transit, and crosswalk locations; they also presented land use contexts that may explain where pedestrians are likely to walk and be exposed to crash risks. These results build on current systemic safety literature and demonstrate the data collection and analysis methods that can be used in a county-level Vision Zero context to improve safety for all who walk. This paper summarizes the analysis approach, including exposure modeling, crash modeling, and applications for identifying both high-risk locations and potential mitigations. Considerations for equity and long-term planning are also discussed.
«Comment vivre et lire la ville sans papiers ? Géographie de la clandestinité et des clandestins à Lausanne »
Creators: name: Schaer, Mathias
Publisher: name: Unknown
Year: 0
Subjects: subject: Clandestinité
subject: pauvreté
subject: ville
subject: domination
subject: ségrégation
subject: étrangeté
subject: capital spatial
subject: Lausanne
subject: peur

description: Le phénomène de la clandestinité est une vraie « question sociale » remettant en question la façon dont la société gère, intègre ou rejette l’indigence. Ce travail interroge l’inscription de cette forme de vagabondage dans l’espace et essaie ainsi de tirer des enseignements non seulement sur la ville, mais aussi, de manière plus générale, sur les pratiques partielles de l’urbain
title: Complex Contagion of Desirable Behavior in Adolescent Social Networks - a Simulation Model
Creators: name: Jordan, Tobias
Publisher: name: University of Kent
Year: 2022

description: This thesis proposes a network spreading model for the simulation of complex contagion processes in social networks. Current models for political decision support often fail in reproducing macro phenomena that emerge from micro behavior. The approach aims at overcoming those shortcomings related to restrictions of current Dynamic Stochastic General Equilibrium (DSGE)- models to rational homogeneous individuals on the ground of the connection of Network Science and Agent-based Simulation. Hereby special attention is drawn to applications in the field of Conditional Cash Transfer Programs (CCT). Using a case study that concerns the educational commitment of adolescents in northeastern Brazil, a step by step description of model setup is given. The contribution to the current state of the research is hereby fourfold. A novel approach to model the diffusion of educational commitment among adolescents (the effort they put into learning) as a Coordination-Game is proposed and it is demonstrated that it adequately represents reality. Moreover, the problem of missing data is addressed in this thesis from the perspective of a modeler that aims at creating meaningful large-scale network simulations. Adaptions of existing link-prediction and network generation approaches as well as a combination of both are proposed as a new, well performing method to impute missing links in social networks, stemming from surveys and online sources. It is shown that both, the "Boundary Specification Problem" and the "Fixed Choice Effect" can be tackled successfully with this techniques. Moreover, the thesis proposes an implementation of a Learning Classifier System (LCS)-based decision module for the agents within the simulation model. This novel adoption of the well known approach provides the agents with bounded rationality and hence enables more realistic simulations. For the first time, it is demonstrated that this decision module mimics human reasoning about educational commitment well. Eventually, an adaption of the standard Genetic Algorithm is proposed and developed for the task of parameter estimation and fitting the simulation model to real data. It is demonstrated that the Genetic Algorithm is well suited for this task.
Steel failure of anchors made of C-steel under fire conditions - a proposal for a new design criterion according to EN 1993-1-2
Creators: name: Haddadi, Samir
name: Al-Mansouri, Omar
Publisher: name: figshare
Year: 2023
Subjects: Fire safety engineering

description: The use of post-installed and cast-in anchors is a world-wide practice. They are needed for structural and non-structural connections. They can offer high load-bearing capacity and ease of use for various types of systems. Their design covers a variety of failure modes at ambient temperature (e.g., concrete cone breakout, pull-out, steel..). Under fire conditions, the load-bearing capacity of these systems decreases for all failure modes and can lead to the failure of the connection that can no longer with stand the applied loads. Currently, the resistance to steel failure under fire conditions can be either evaluated according to EAD330232 or calculated according to EN 1992-4, Annex D. The EN 1992-4 method offers a suitable alternative without testing to get default values of resistance to steel failure under fire conditions. However, it can bevery penalizing for commercial threaded rods with high steel grades as it does not take the steel grade into consideration. When this method was developed, it was validated against a limited number of fire tests. Inaddition, it offers fire ratings (i.e., resistance for a given fire exposure time) that are limited to 30, 60, 90 and 120 min. This paper presents two alternative fire design methods for steel failure mode of commercial threaded rods made of carbon steel (c-steel). Reduction factors applicable to the ultimate tension steel strength of c-steel are used according to EN 1993-1-2 Tables 3.1 and D.1. These methods determine the reduction factor based on the temperature of the steel rod with fire exposure time. The temperature was calculated numerically using FE simulation of transient thermal analysis, using the commercial software ANSYS. The anchors were modelled in uncracked concrete and ISO 834-1 fire conditions were applied to the fire exposed surfaces.
Building a community of data stewards in Flanders: lessons learned from the FRDN Knowledge Hub's experience with the Community Canvas framework
Creators: name: Oset García, Paula
name: Van den Eynden, Veerle
name: Choueiki, Ziad
name: Acar, Tessa
Publisher: name: Zenodo
Year: 2023
Subjects: Community
community building
Data steward
Open Science
IDW2023

description: Presentation on International Data Week - SciDataCon Salzburg 2023, 
Session Data Stewards / Competency Centres / Training Presentations (ID 569)
This presentation talks about the creation of the Data steward community in Flanders and the use of the Community Canvas to revive the community.
DAMEWARE: A web cyberinfrastructure for astrophysical data mining
Creators: name: Brescia, Massimo
name: Cavuoti, Stefano
name: Longo, Giuseppe
name: Nocella, Alfonso
name: Garofalo, Mauro
name: Manna, Francesco
name: Esposito, Francesco
name: Albano, Giovanni
name: Guglielmo, Marisa
name: D'Angelo, Giovanni
name: Di Guido, Alessandro
name: Djorgovski, George S.
name: Donalek, Ciro
name: Mahabal, Ashish A.
name: Graham, Matthew J.
name: Fiore, Michelangelo
name: D'Abrusco, Raffaele
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Astronomy is undergoing through a methodological revolution triggered by an unprecedented wealth of complex and accurate data. The new panchromatic, synoptic sky surveys require advanced tools for discovering patterns and trends hidden behind data which are both complex and of high dimensionality. We present DAMEWARE (DAta Mining & Exploration Web Application REsource): a general purpose, web-based, distributed data mining environment developed for the exploration of large datasets, and finely tuned for astronomical applications. By means of graphical user interfaces, it allows the user to perform classification, regression or clustering tasks with machine learning methods. Salient features of DAMEWARE include its capability to work on large datasets with minimal human intervention, and to deal with a wide variety of real problems such as the classification of globular clusters in the galaxy NGC1399, the evaluation of photometric redshifts and, finally, the identification of candidate Active Galactic Nuclei in multiband photometric surveys. In all these applications, DAMEWARE allowed to achieve better results than those attained with more traditional methods. With the aim of providing potential users with all needed information, in this paper we briefly describe the technological background of DAMEWARE, give a short introduction to some relevant aspects of data mining, followed by a summary of some science cases and, finally, we provide a detailed description of a template use case.
description: To appear in PASP (accepted for pubblication)
USBcat - Towards an Intrusion Surveillance Toolset
Creators: name: Chapman, Chris
name: Knight, Scott
name: Dean, Tom
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: This paper identifies an intrusion surveillance framework which provides an analyst with the ability to investigate and monitor cyber-attacks in a covert manner. Where cyber-attacks are perpetrated for the purposes of espionage the ability to understand an adversary's techniques and objectives are an important element in network and computer security. With the appropriate toolset, security investigators would be permitted to perform both live and stealthy counter-intelligence operations by observing the behaviour and communications of the intruder. Subsequently a more complete picture of the attacker's identity, objectives, capabilities, and infiltration could be formulated than is possible with present technologies. This research focused on developing an extensible framework to permit the covert investigation of malware. Additionally, a Universal Serial Bus (USB) Mass Storage Device (MSD) based covert channel was designed to enable remote command and control of the framework. The work was validated through the design, implementation and testing of a toolset.
description: In Proceedings AIDP 2014, arXiv:1410.3226
Using a bio-inspired model to facilitate the ecosystem of data sharing in smart healthcare
Creators: name: Yao, Yao
name: Kshirsagar, Meghana
name: Vaidya, Gauri
name: Ryan, Conor
Publisher: name: F1000 Research Limited
Year: 2023

description: Following the development of Information Technology (IT) techniques, data and the knowledge behind data have increased exponentially today. The goals to better manage and share such massive big data become more and more critical in many prominent Artificial Intelligence (AI)-based smart industries. Smart healthcare is a typical example of these cases. Efficient management of data sharing apparently can lead to better diagnosis, illness prevention, and epidemic monitoring. However, appropriate and robust management of sharing sensitive data among different stakeholders operating within the ecosystem still poses challenges of geographical boundaries and compliance to diverse data sharing and access rules across continents. To address the complexity of large-scale data sharing and provide an efficient solution, our study proposes a bioinspired autonomic agent-based framework capable of leveraging the large-scale distributed data sharing infrastructure with multiple stakeholders whilst, at the same time, supporting the development of future data integration ecosystems. Our current study selects smart healthcare as a use case to discuss the deployment of our data-sharing framework and use this example to demonstrate the potential advantage of this framework but the framework itself also has good extensibility to other interdisciplinary scenarios and domains.
Single-cell chromatin profiling reveals genetic programs activating proregenerative states in nonmyocyte cells
Creators: name: Spurlock, Brian
name: Liu, Jiandong
name: Dong, Yanhan
name: Craft, Madison
name: Yapundich, Nicholas
name: Wang, Haofei
name: Feng, Dong
name: Nist, Elizabeth
name: Qian, Li
name: Yang, Yuchen
Publisher: name: American Association for the Advancement of Science (AAAS)
Year: 2024

description: Cardiac regeneration requires coordinated participation of multiple cell types whereby their communications result in transient activation of proregenerative cell states. Although the molecular characteristics and lineage origins of these activated cell states and their contribution to cardiac regeneration have been studied, the extracellular signaling and the intrinsic genetic program underlying the activation of the transient functional cell states remain largely unexplored. In this study, we delineated the chromatin landscapes of the noncardiomyocytes (nonCMs) of the regenerating heart at the single-cell level and inferred the cis-regulatory architectures and trans-acting factors that control cell type-specific gene expression programs. Moreover, further motif analysis and cell-specific genetic manipulations suggest that the macrophage-derived inflammatory signal tumor necrosis factor-α, acting via its downstream transcription factor complex activator protein-1, functions cooperatively with discrete transcription regulators to activate respective nonCM cell types critical for cardiac regeneration. Thus, our study defines the regulatory architectures and intercellular communication principles in zebrafish heart regeneration.
Étude des relations glacier-permafrost dans une marge proglaciaire à forte composante anthropique (Col des Gentianes, Valais, Suisse)
Creators: name: Schuetz, Philippe
Publisher: name: Unknown
Year: 0
Subjects: subject: Permafrost
subject: marge proglaciaire
subject: Gentianes
subject: moraine
subject: glacier
subject: Verbier
subject: glace
subject: rétro-fluage
subject: téléphérique

description: Au Petit Age Glaciaire (PAG) beaucoup de glaciers de cirque alpins se sont avancés sur des terrains meubles potentiellement gelés, perturbant fortement la répartition et l’état thermique des corps gelés. Il en résulte une distribution complexe des corps gelés dans la marge proglaciaire et des mouvements de rééquilibrage des terrains déformés par l'avancée glaciaire. Cette étude s'intéresse à la marge proglaciaire du glacier de Tortin (Mont Fort, Valais, Suisse), en particulier à sa moraine latérale gauche, fortement anthropisée au niveau du Col des Gentianes (2895 m; présence de la gare de départ du téléphérique du Mont Fort). Des méthodes thermiques (BTS, mesures en forage) et géophysiques (sondages, traînés) ont étés utilisées pour la prospection du permafrost. Les mouvements de la moraine ont, quand à eux, été mesurés à l’aide d’un GPS différentiel. Du fait de son importante composante anthropique, la marge proglaciaire du glacier de Tortin apparaît comme un site particulièrement propice à l’étude des relations glacier-permafrost et des interactions entre les activités humaines et le milieu naturel. Les mesures effectuées ont permis d’établir une carte de la distribution du permafrost dans la marge proglaciaire. Cette distribution présente un certain nombre de différences avec celle obtenue par différents modèles de simulation du permafrost. Dans certaines parties de la moraine, la présence de glace massive a pu être attestée lors de travaux d’excavations (construction des bâtiments, aménagement des pistes de ski). Le rééquilibrage de la moraine en direction du glacier suite au retrait de ce dernier a pu être mis en évidence. Cependant, le tassement d’une partie de la moraine consécutivement à la fonte au toit du permafrost et le fluage observé en direction du glacier ne semblent pas affecter la stabilité des bâtiments construits sur la moraine.
The impact of economic-related freedoms on the national entrepreneurial activity
Creators: name: Dempere, Juan
Publisher: name: figshare
Year: 2022
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business
subject: 150304 Entrepreneurship
subject: 150314 Small Business Management
subject: Economics
subject: 140202 Economic Development and Growth
subject: 149901 Comparative Economic Systems
subject: 140207 Financial Economics
subject: 140210 International Economics and International Finance
subject: 140102 Macroeconomic Theory
subject: 140213 Public Economics- Public Choice
subject: 140214 Public Economics- Publically Provided Goods
subject: 140218 Urban and Regional Economics
subject: 160205 Police Administration, Procedures and Practice
subject: FOS: Law
subject: 160599 Policy and Administration not elsewhere classified
subject: FOS: Political science
subject: 160699 Political Science not elsewhere classified
subject: 160609 Political Theory and Political Philosophy
subject: 160305 Population Trends and Policies
subject: FOS: Sociology
subject: 160509 Public Administration
subject: 160510 Public Policy
subject: 160512 Social Policy
subject: 160703 Social Program Evaluation
subject: 160805 Social Change

description: The impact of economic-related freedoms on the national entrepreneurial activity Abstract: This article aims to analyze the explanatory power of the constituent components of the Heritage Foundation’s Index of Economic Freedom over the Global Entrepreneurship and Development Institute’s Global Entrepreneurship Index and its sub-indexes. We analyze a sample of 118 countries with available historic data from 2014–2019. We evaluate the impact of the business, labor, monetary, trade, investment, and financial freedom indexes over the Global Entrepreneurship Index and its sub-indexes. We performed a cross-sectional analysis using generalized linear models and weighted least squares models. We also analyzed our panel data using panel-corrected standard error models. We find a significant and positive relationship between the Global Entrepreneurship Index and the business and financial freedom indexes. We also find a significant and positive relationship between the business and financial freedom indexes and the entrepreneurial attitudes, abilities, and aspirations sub-indexes. The limitations of our study include the diversity of national entrepreneurial ecosystems and the difficulty of measuring them with a few quantitative variables. Additionally, our results are heavily influenced by the selection of countries in our sample. To the best of the authors’ knowledge, no previous research article has studied the explanatory power of the Index of Economic Freedom’s constituent components over the Global Entrepreneurship Index and its sub-indexes. Similarly, our sample of 118 countries with data from 2014–2019 makes our study the most comprehensive global analysis about the relationship between economic freedom and entrepreneurship so far.
S4: A Spatial-Spectral model for Speckle Suppression
Creators: name: Fergus, Rob
name: Hogg, David W.
name: Oppenheimer, Rebecca
name: Brenner, Douglas
name: Pueyo, Laurent
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: High dynamic-range imagers aim to block out or null light from a very bright primary star to make it possible to detect and measure far fainter companions; in real systems a small fraction of the primary light is scattered, diffracted, and unocculted. We introduce S4, a flexible data-driven model for the unocculted (and highly speckled) light in the P1640 spectroscopic coronograph. The model uses Principal Components Analysis (PCA) to capture the spatial structure and wavelength dependence of the speckles but not the signal produced by any companion. Consequently, the residual typically includes the companion signal. The companion can thus be found by filtering this error signal with a fixed companion model. The approach is sensitive to companions that are of order a percent of the brightness of the speckles, or up to $10^{-7}$ times the brightness of the primary star. This outperforms existing methods by a factor of 2-3 and is close to the shot-noise physical limit.
description: accepted for publication in ApJ
Model the System from Adversary Viewpoint: Threats Identification and Modeling
Creators: name: Idrees, Muhammad Sabir
name: Roudier, Yves
name: Apvrille, Ludovic
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cryptography and Security (cs.CR)
subject: Software Engineering (cs.SE)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Security attacks are hard to understand, often expressed with unfriendly and limited details, making it difficult for security experts and for security analysts to create intelligible security specifications. For instance, to explain Why (attack objective), What (i.e., system assets, goals, etc.), and How (attack method), adversary achieved his attack goals. We introduce in this paper a security attack meta-model for our SysML-Sec framework, developed to improve the threat identification and modeling through the explicit representation of security concerns with knowledge representation techniques. Our proposed meta-model enables the specification of these concerns through ontological concepts which define the semantics of the security artifacts and introduced using SysML-Sec diagrams. This meta-model also enables representing the relationships that tie several such concepts together. This representation is then used for reasoning about the knowledge introduced by system designers as well as security experts through the graphical environment of the SysML-Sec framework.
description: In Proceedings AIDP 2014, arXiv:1410.3226
Regular-equivalence of $2$-knot diagrams and sphere eversions
Creators: name: Takase, Masamichi
name: Tanaka, Kokoro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57Q45

description: For each diagram $D$ of a $2$-knot, we provide a way to construct a new diagram $D'$ of the same knot such that any sequence of Roseman moves between $D$ and $D'$ necessarily involves branch points. The proof is done by developing the observation that no sphere eversion can be lifted to an isotopy in $4$-space.
description: 10 pages, 6 figures
The spectrum of a Harmonic Oscillator Operator Perturbed by Point Interactions
Creators: name: Mityagin, Boris
Publisher: name: arXiv
Year: 2014
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 47E05, 34L40, 34L15

description: We consider the operator $ L = - (d/dx)^2 + x^2 y + w(x) y , y \in L^2(\mathbb{R}) $, where $ w(x) = s [ δ(x - b) - δ(x + b)], b \neq 0,$ real, $s \in \mathbb{C}$. This operator has a discrete spectrum: eventually the eigenvalues are simple and $λ_n = (2n + 1) + s^2 (κ(n) / n) + ρ(n)$, where $ κ(n) = \frac{1}{2π} [(-1)^{n + 1} \sin ( 2 b \sqrt{2n} ) - \frac{1}{2} \sin ( 4 b \sqrt{2n} ) ]$ and $ |ρ(n) | \leq C (\log n) / (n^{3/2})$ If $s = i γ$, $γ$ real, the number $T(γ)$ of non-real eigenvalues is finite, and $T(γ) \leq [ C (1 + | γ|) \log (e + | γ|)]^2.$ The analogue of the above equations is given in the case of any two-point interaction perturbation $w(x) = c_+ δ(x - b) + c_- δ(x + b), c_+, c_- \in \mathbb{C}. $
description: 65 pages
Capturing catchment area data comprehensively: The North Carolina Cancer Health Assets and Needs Assessment (CHANA) approach
Creators: name: Emerson, Marc A.
name: Johnson, Katie E.
name: Roberson, Mya L.
name: Salas, Ana I.
name: Spees, Lisa P.
name: Arsali, Emma G.
name: Baggett, Chris D.
name: Olshan, Andrew F.
name: Morris, Hayley N.
name: Wheeler, Stephanie B.
Publisher: name: Taylor & Francis
Year: 2024

description: Background. A key requirement of community outreach and engagement offices within National Cancer Institute-designated cancer centers is to conduct a comprehensive examination of their catchment area’s population, cancer burden, and assets. To accomplish this task, we describe the plan for implementing our initiative, the Cancer Health Assets and Needs Assessment (CHANA). CHANA compiles, into a single source, up-to-date data that describes the cancer landscape of North Carolina’s 100 counties. Methods. CHANA utilized a three phased approach: (1) compiling existing data from publicly available sources; (2) analyzing novel data source, which links state cancer registry, multi-payer insurance claims, and area-level contextual data; and (3) conducting surveys of the general public and cancer survivors and key informant interviews with cancer-related community organizations to understand their priorities and resources. These multifaceted data resources are curated and compiled into three key dissemination products: a summary report, county-level profile reports, and interactive online data dashboards. Discussion. Through data-driven efforts like CHANA, cancer centers and the communities they serve can better understand gaps in care and information needs, opportunities, and resources to improve health outcomes, and priorities for new research and programmatic endeavors focused on prevention, healthcare access, equity, and quality.