cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anode catalyst layer engineering for the direct formic acid fuel cell
Creators: name: Sanii, Sanam
Publisher: name: University of British Columbia
Year: 2011

description: Direct formic acid fuel cells (DFAFC) are promising alternatives to hydrogen proton exchange membrane fuel cells for microelectronic applications. Compared to direct methanol fuel cell (DMFC), the main advantages of direct formic acid fuel cell (DFAFC) are higher theoretical open circuit voltage (1.45 V at 298 K), lower fuel cross over towards cathode and reasonable power densities at room temperature that make DFAFCs a viable alternative for micropower applications. The operation of DFAFCs on Pd-based catalysts at ambient temperature showed lower fuel permeation from anode to cathode that resulted in better fuel utilization when running on high formic acid concentrations (~10M). However, Pd suffers an unacceptable loss of performance with time that decreases the cell power density by about 50% in a few hours. The aim of the present work is to create an extended reaction zone anode structure to improve the utilization of the catalyst and to modify the electrode surface characteristics in order to reduce performance losses. The novel catalyst deposition technique involved electroless (chemical) deposition of Pd particles directly onto the carbon paper substrate (AvCarbTM P50) in the presence of Nafion® solution. It was found that the use of 4.66 g L⁻¹ of pure Nafion® as an additive to the electroless bath and Shipley pre-treatment resulted in 1.6 mg cm⁻² and 0.07 mg cm⁻² Pd and Sn mass loadings respectively with Pd average particle size of 0.45 to 0.55 μm. When pre-treating in nitric acid solution, the surface coverage was found to be uniform with dense particulate-like structure. The surface nitric acid pre-treatment method in conjunction with 2.46 g L⁻¹ Nafion® additive in the electroless solution were resulted in 4.5 mg cm⁻² Pd mass loading on AvCarbTM P50 and enhanced electrochemical performance at current densities larger than 500 A m⁻² at 333 K . Comparing the Pd/C and PdSn/C performances in DFAFC tests, the Pd/C anode with higher Pd mass loading (4.5 mg cm⁻²) and OCV stayed fairly stable on ~ 0.55 V up to 3.5 hours of constant current draw(100 A m⁻² at 333 K).
Sensing distant nuclear spins with a single electron spin
Creators: name: Kolkowitz, Shimon
name: Unterreithmeier, Quirin P.
name: Bennett, Steven D.
name: Lukin, Mikhail D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally demonstrate the use of a single electronic spin to measure the quantum dynamics of distant individual nuclear spins from within a surrounding spin bath. Our technique exploits coherent control of the electron spin, allowing us to isolate and monitor nuclear spins weakly coupled to the electron spin. Specifically, we detect the evolution of distant individual carbon-13 nuclear spins coupled to single nitrogen vacancy centers in a diamond lattice with hyperfine couplings down to a factor of 8 below the electronic spin bare dephasing rate. Potential applications to nanoscale magnetic resonance imaging and quantum information processing are discussed.
description: Corrected typos, updated references. 5 pages, 4 figures, and supplemental material
M4.9 Report on Fair Data Assessment Mechanisms to Develop Pragmatic Concepts for Fairness Evaluation at the Dataset Level
Creators: name: Devaraju, Anusuriya
name: Mokrane, Mustapha
name: Cepinskas, Linas
name: Huber, Robert
name: Herterich, Patricia
name: De Vries, Jerry
name: Akerman, Vesa
name: Davidson, Joy
name: L'Hour, Hervé
name: Diepenbroek, Michael
Publisher: name: Zenodo
Year: 2020
Subjects: FAIR Principles
FAIR Data Assessment
FAIR Certification
FAIR Metrics
FAIRsFAIR
CoreTrustSeal
Research Data Management

description: This report is a milestone of the FAIRsFAIR project. It includes two main results on FAIR assessment at the dataset level: The FAIRsFAIR Data Object Assessment Metrics (v0.3) specification contains 15 metrics proposed by FAIRsFAIR to evaluate the FAIRness of research data objects in Trustworthy Digital Repositories (TDRs). We improved the metrics based on a focus group's feedback and the RDA-endorsed FAIR data maturity model guidelines and specification. A total of 33 FAIR stakeholders, such as research communities, data service providers, standard bodies, and coordination fora participated in the focus group. A preprint of the journal article titled ‘From Conceptualization to Implementation: FAIR Assessment of Research Data Objects’, submitted to CODATA Data Science Journal Special collection on RDA. The article summarizes the metrics development, and its two applications: an awareness-raising self-assessment tool, and a tool for automated assessment of research data FAIRness. The article also covers the initial results of testing the tools with researchers and data repositories, and future improvements including the next steps to enable FAIR data assessment in the broader research data ecosystem.
Hypersequent Calculi for Modal Logics
Creators: name: Burns, Samara Elizabeth
Publisher: name: Arts
Year: 2018
Subjects: subject: Logic
subject: Modal Logic
subject: Proof Theory
subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: This thesis surveys and examines hypersequent approaches to the proof theory of modal logics. Traditional sequent calculi for modal logics often fail to have many of the desirable properties that we expect of a sequent calculus. Cut cannot be eliminated from the system for S5, the axioms of each logic are not straightforwardly related to the sequent rules, and variation between modal sequent calculi occurs in the presence and absence of logical rules, rather than structural rules, which violates Došen’s principle. The hypersequent framework is beneficial as we can provide Cut-free complete treatments of many modal logics. However, hypersequent approaches often lack generality, or do not conform to Došen’s principle. A recent development in the proof theory of modal logics, called relational hypersequents, appears to overcome many of these issues. Relational hypersequents provide a unified proof theory for many modal logics, where the logical rules are held constant between modal systems. This thesis provides some preliminary results for relational hypersequents by providing a Cut-free completeness proof for the modal logic K.
Pathophysiology and therapy of systemic vasculitides
Creators: name: Ralli, Massimo
name: Campo, Flaminia
name: Angeletti, Diletta
name: Minni, Antonio
name: Artico, Marco
name: Greco, Antonio
name: Polimeni, Antonella
name: De Vincentiis, Marco
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2020
Subjects: subject: Systemic vasculitides
subject: Kawasaki disease
subject: Takayasu arteritis
subject: Polyarteritis nodosa
subject: Giant cell arteritis
subject: Behcet’s disease
subject: 610

description: Systemic vasculitides represent uncommon conditions characterized by the inflammation of blood vessels that can lead to different complex disorders limited to one organ or potentially involving multiple organs and systems. Systemic vasculitides are classified according to the diameter of the vessel that they mainly affect (small, medium, large, or variable). The pathogenetic mechanisms of systemic vasculitides are still partly unknown, as well as their genetic basis. For most of the primary systemic vasculitides, a single gold standard test is not available, and diagnosis is often made after having ruled out other mimicking conditions. Current research has focused on new management protocol and therapeutic strategies aimed at improving long-term patient outcomes and avoiding progression to multiorgan failure with irreversible damage. In this narrative review, authors describe different forms of systemic vasculitides through a review of the literature, with the aim of highlighting the current knowledge and recent findings on etiopathogenesis, diagnosis and therapy.
description: EXCLI Journal;Vol. 19. 2020, pp. 817-854
Discovery of the correspondence between intra-cluster radio emission and a high pressure region detected through the Sunyaev-Zel'dovich effect
Creators: name: Ferrari, C.
name: Intema, H. T.
name: Orrù, E.
name: Govoni, F.
name: Murgia, M.
name: Mason, B.
name: Bourdin, H.
name: Asad, K. M.
name: Mazzotta, P.
name: Wise, M. W.
name: Mroczkowski, T.
name: Croston, J. H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analyzed new 237 MHz and 614 MHz GMRT data of the most X-ray luminous galaxy cluster, RX J1347-1145. Our radio results are compared with the MUSTANG 90 GHz Sunyaev-Zel'dovich effect map and with re-processed Chandra and XMM-Newton archival data of this cluster. We point out for the first time in an unambiguous way the correspondence between a radio excess in a diffuse intra-cluster radio source and a hot region detected through both Sunyaev-Zel'dovich effect and X-ray observations. Our result indicates that electron re-acceleration in the excess emission of the radio mini-halo at the center of RX J1347-1145 is most likely related to a shock front propagating into the intra-cluster medium.
description: Revised version in response to referee's comments; accepted for publication in Astronomy and Astrophysics Letters
IL23R on myeloid cells is involved in murine pulmonary granuloma formation
Creators: name: Schreiber, Tina
name: Falk-Paulsen, Maren
name: Kuiper, Jan
name: Aden, Konrad
name: Noth, Rainer
name: Gisch, Nicolas
name: Schreiber, Stefan
name: Rosenstiel, Philip
name: Bewig, Burkhard
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer

description: The involvement of the IL-23/IL23R pathway is well known in the disease pathogenesis of sarcoidosis and other inflammatory diseases. To date, the pathogenic mechanism of IL-23 is most notably described on CD4+ Th17 lymphocytes. However, the function of the IL23R on myeloid cells in sarcoidosis is poorly understood. Thus, the aim of the study is to investigate the role of the IL23R on myeloid cell in pulmonary granuloma formation. Methods: We generated IL23RLysMCre mice lacking the IL23R gene in myeloid cells. The importance of IL23R in myeloid cells for the development of sarcoidosis was studied in a mouse model of inflammatory lung granuloma formation through embolization of PPD from Mycobacterium bovis-coated Sepharose beads into previously PPD-immunized mice. In addition the function of IL23R on myeloid cells was studied in LPS or IFNγ stimulated BMDMs and BMDCs. The mRNA and protein expression levels of relevant cytokines were analyzed by RT-PCR (TaqMan) and ELISA. The composition of immune cells in BALF was quantified by flow cytometry and alteration in granuloma sizes were observed by H&E stained lung sections. Results: Mycobacterium Ag-elicted pulmonary granulomas tend to be smaller in IL23RLysMCre mice and NF-κB dependent Th1 cytokines in the murine lungs are reduced compared to wildtype mice. In line, we observed that IL23R-deficient bone marrow-derived macrophages show a reduced production of Th1 cytokines after LPS stimulation. Conclusion: We here for the first time demonstrate a role for IL23R on myeloid cells in pulmonary inflammation and granuloma formation. Our findings provide essential insights in the pathogenesis of inflammatory lung diseases like sarcoidosis, which might be useful for the development of novel therapeutics targeting distinct immunological pathways like IL-23/IL23R.
Coupled Studies of Shale Reservoirs Characterization and Simulation
Creators: name: Yang, Sheng
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Rock Mechanics
subject: Microseismic
subject: Adsorption
subject: Shale Reservoir Simulation
subject: Shale Reservoir Characterization
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geophysics
subject: Engineering--Petroleum

description: Coupled studies of characterization and simulation of shale reservoirs are documented in this thesis. The characterization of shale reservoirs includes the description of natural fractures, rock brittleness derived from dipole sonic logs, brittle mineral composition calculated from Elemental Capture Spectroscopy (ECS) logs, and hardness measured on cores. Then a rock fracability index model, based on these rock properties, is generated to constrain stimulated reservoir volumes generated by microseismic events. An enhanced Dubinin-Astakhov (DA) model is also proposed to model methane-shale adsorption under supercritical conditions. Based on reservoir characterization, the Marcellus shale gas and Eagle Ford shale condensate reservoirs simulation models are developed and validated by field data. Effects of uneven proppant distribution, geomechanics, single-component adsorption and matrix permeability are evaluated in the shale gas reservoirs. In terms of the condensate reservoir, roles of multicomponent adsorption and geomechanics are investigated during primary recovery and CO2 enhanced recovery.
Hand Sanitizers in the Wild: A Large-scale Study of Custom JavaScript Sanitizer Functions
Creators: name: Klein, David
name: Barber, Thomas
name: Bensalim, Souphiane
name: Stock, Ben
name: Johns, Martin
Publisher: name: CISPA
Year: 2023

description: Despite the considerable amounts of resources invested into securing the Web, Cross-Site Scripting (XSS) is still widespread. This is especially true for Client-Side XSS as, unlike server-side application frameworks, Web browsers do not ship with standard protection routines, so-called sanitizers. Web developers, therefore, have to either resort to third-party libraries or write their own sanitizers to stop XSS in its tracks.Such custom sanitizer routines – dubbed hand sanitizers in the following – are notoriously difficult to implement securely. In this paper, we present a technique to automatically detect, extract, analyze, and validate JavaScript sanitizer functions using a combination of taint tracking and symbolic string analysis. While existing work evaluates server-side sanitizers using a small number of applications, we present the first large-scale study of client-side JavaScript sanitizers. Of the most popular 20,000 websites, our method detects 705 unique sanitizers across 1,415 domains, of which 12.5% are insecure. Of the vulnerable sanitizers, we were able to automatically generate circumventing exploits for 51.3% of them, highlighting the dangers of manual sanitization attempts. Interestingly, vulnerable sanitizers are present across the entire range of website rankings considered, and we find that most sanitizers are not generic enough to thwart XSS if used in just a slightly different context. Finally, we explore the origins of vulnerable sanitizers to motivate adopting a standardized sanitization API available directly in the browser.
Geometrically induced electric polarization in conical topological insulators
Creators: name: Fonseca, Jakson M.
name: Moura-Melo, Winder A.
name: Pereira, Afranio R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the topological magnetoelectric effect on a conical topological insulator when a point charge $q$ is near the cone apex. The Hall current induced on the cone surface and the image charge configuration are determined. We also study a kind of gravitational Aharonov-Bohm effect in this geometry and realize a phase diference betwen the components of the wavefunctions (spinors) upon closed parallel transport around the (singular) cone tip. Concretely, a net current flowing towards cone apex (or botton) shows up, yielding electric polarization of the conical topological insulator. Such an effect may be detected, for instance, by means of the net accumulated Hall charge near the apex. Once it depends only on the geometry of the material (essetially, the cone apperture angle) this may be faced as a microscopic scale realization of (2+1)-dimensional Einstein gravity.
description: 4 pages revtex style, 2 figures
Practical Post-Quantum Signature Schemes from Isomorphism Problems of Trilinear Forms
Creators: name: Tang, Dang
name: Duong, Dung Hoang
name: Joux, Antoine
name: Plantard, Thomas
name: Qiao, Youming
name: Susilo, Willy
Publisher: name: CISPA
Year: 2023

description: In this paper, we propose a practical signature scheme based on the alternating trilinear form equivalence problem. Our scheme is inspired by the Goldreich-Micali-Wigderson's zero-knowledge protocol for graph isomorphism, and can be served as an alternative candidate for the NIST's post-quantum digital signatures. First, we present theoretical evidences to support its security, especially in the post-quantum cryptography context. The evidences are drawn from several research lines, including hidden subgroup problems, multivariate cryptography, cryptography based on group actions, the quantum random oracle model, and recent advances on isomorphism problems for algebraic structures in algorithms and complexity. Second, we demonstrate its potential for practical uses. Based on algorithm studies, we propose concrete parameter choices, and then implement a prototype. One concrete scheme achieves 128 bit security with public key size ~4100 bytes, signature size ~6800$ bytes, and running times (key generation, sign, verify) ~0.8ms on a common laptop computer.
A faster method of computation of lattice quark number susceptibilities
Creators: name: Gavai, R. V.
name: Sharma, Sayantan
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the quark number susceptibilities in two flavor QCD for staggered fermions by adding the chemical potential as a Lagrange multiplier for the point-split number density term. Since lesser number of quark propagators are required at any order, this method leads to faster computations. We propose a subtraction procedure to remove the inherent undesired lattice terms and check that it works well by comparing our results with the existing ones where the elimination of these terms is analytically guaranteed. We also show that the ratios of susceptibilities are robust, opening a door for better estimates of location of the QCD critical point through the computation of the tenth and twelfth order baryon number susceptibilities without significant additional computational overload.
description: 10 pages, 12 figures
Batch-OT with Optimal Rate
Creators: name: Brakerski, Zvika
name: Branco, Pedro
name: Döttling, Nico
name: Pu, Sihang
Publisher: name: CISPA
Year: 2023

description: We show that it is possible to perform n independent copies of 1-out-of-2 oblivious transfer in two messages, where the communication complexity of the receiver and sender (each) is n(1 + o(1)) for sufficiently large n. Note that this matches the information-theoretic lower bound. Prior to this work, this was only achievable by using the heavy machinery of rate-1 fully homomorphic encryption (Rate-1 FHE, Brakerski et al., TCC 2019). To achieve rate-1 both on the receiver’s and sender’s end, we use the LPN assumption, with slightly sub-constant noise rate 1/m� for any � > 0 together with either the DDH, QR or LWE assumptions. In terms of efficiency, our protocols only rely on linear homomorphism, as opposed to the FHE-based solution which inherently requires an expensive “bootstrapping” operation. We believe that in terms of efficiency we compare favorably to existing batch-OT protocols, while achieving superior communication complexity. We show similar results for Oblivious Linear Evaluation (OLE). For our DDH-based solution we develop a new technique that may be of independent interest. We show that it is possible to “emulate” the binary group Z2 (or any other small-order group) inside a prime-order group Zp in a function-private manner. That is, Z2 operations are mapped to Zp operations such that the outcome of the latter do not reveal additional information beyond the Z2 outcome. Our encoding technique uses the discrete Gaussian distribution, which to our knowledge was not done before in the context of DDH.
On fermionic tilde conjugation rules and thermal bosonization. Hot and cold thermofields
Creators: name: Korenblit, S. E.
name: Semenov, V. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A generalization of Ojima tilde conjugation rules is suggested, which reveals the coherent state properties of thermal vacuum state and is useful for the thermofield bosonization. The notion of hot and cold thermofields is introduced to distinguish different thermofield representations giving the correct normal form of thermofield solution for finite temperature Thirring model with correct renormalization and anticommutation properties.
description: 13 pages
Do Software Languages Engineers Evaluate their Languages?
Creators: name: Gabriel, Pedro
name: Goulão, Miguel
name: Amaral, Vasco
Publisher: name: arXiv
Year: 2011
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: D.2.8; D.2.9; D.2.13; D.3.2

description: Domain Specific Languages (DSLs) can contribute to increment productivity, while reducing the required maintenance and programming expertise. We hypothesize that Software Languages Engineering (SLE) developers consistently skip, or relax, Language Evaluation. Based on the experience of engineering other types of software products, we assume that this may potentially lead to the deployment of inadequate languages. The fact that the languages already deal with concepts from the problem domain, and not the solution domain, is not enough to validate several issues at stake, such as its expressiveness, usability, effectiveness, maintainability, or even the domain expert's productivity while using them. We present a systematic review on articles published in top ranked venues, from 2001 to 2008, which report DSLs' construction, to characterize the common practice. This work confirms our initial hypothesis and lays the ground for the discussion on how to include a systematic approach to DSL evaluation in the SLE process.
A study of water crossover in polymer electrolyte membrane fuel cells
Creators: name: Yau, Tak Cheung
Publisher: name: University of British Columbia
Year: 2011

description: Water crossover between anode and cathode of polymer electrolyte membrane fuel cells has been studied together with fuel cell performance at steady state. The parameters considered included temperature, pressure, inlet humidity and the presence of a cathode microporous layer. In general water crossover was found to be increasingly toward the anode side with increasing current density up to a certain point beyond which a plateau was observed. Larger cathode-to-anode inlet humidity gradient, lower temperature and higher cathode pressure enhanced water crossover to the anode, due to a higher downstream humidity at the cathode catalyst layer. The presence of a cathode microporous layer enhanced water crossover to the anode only when the cathode inlet humidity was low. It was proposed that this layer imposed a larger diffusion barrier between the cathode channel and the membrane interface whose effects diminished at high relative humidity. The zero crossover rate under zero humidity gradients with no load regardless of the presence of the cathode microporous layer suggested that capillary action was not a contributing factor for the action of the layer. In addition, the quantitative data obtained by the water crossover measurement equipment were found to be useful in model validation and parameter estimations. The data could pinpoint inadequacies in models, as well as providing estimated parameters that were more consistent with changes in the oxygen concentration and fitted better to both the current density and water crossover data given a certain voltage.
Parent Hamiltonian for the non-Abelian chiral spin liquid
Creators: name: Greiter, Martin
name: Schroeter, Darrell F.
name: Thomale, Ronny
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We construct a parent Hamiltonian for the family of non-Abelian chiral spin liquids proposed recently by two of us [PRL 102, 207203 (2009)], which includes the Abelian chiral spin liquid proposed by Kalmeyer and Laughlin, as the special case S=1/2. As we use a circular disk geometry with an open boundary, both the annihilation operators we identify and the Hamiltonians we construct from these are exact only in the thermodynamic limit.
description: 5+2 pages, no figures. Version 2: two references added
Procurement of ancillary services in Alberta
Creators: name: Amery, Mohamed
Publisher: name: University of Calgary
Year: 2007

description: Bibliography: p. 91-95
description: This study proposes a procedure with which a regulator should determine the amount of ancillary service that a power generation source provides. It discusses how a regulator should decide which generator provides, say, spinning reserve during a given hour. The Alberta Electric System Operator (AESO) currently uses a bid process that considers only financial bids. The AESO should replace its current procedure for selecting firms to supply ancillary reserve with a system that correctly accounts for assets' correlations with total primary market availability. An improved procedure is one in which the operator collects information on the availability of the units during the hours of each day, calculates relevant statistical values, and selects the "best" firms in terms of financial bids and variability figures.
title: Das Wunder des Genügens
Creators: name: Müllner, Ilse
Publisher: name: Universität Kassel
Year: 2013
Subjects: subject: 230
subject: Exegese
subject: Soziale Ungleichheit
subject: Genügsamkeit
subject: Bibel. Altes Testament

description: Eröffnungsgottesdienst – Ex 16,11–18; Erschienen im Rahmen des 34. Deutschen Evangelischen Kirchentags in Hamburg 1. - 5. Mai 2013.
title: Грантовая поддержка как инструмент пространственного развития регионов Российской Федерации
title: Grant Support as a Tool for Spatial Development of Regions of the Russian Federation
Creators: name: Шамиев, Игорь Джалилович
name: Воронина, Евгения Васильевна
Publisher: name: Издательский центр СурГУ
Year: 2019

description: В статье проводится анализ грантовой поддержки как инструмента пространственного развития регионов. Обосновано, что для эффективности деятельности государства как регулятора нужно правильно определить инструментарий активизации пространственного развития регионов на примере различных социально-экономических показателей за счет инструментов грантовой поддержки. Сформулированы основные задачи региональной налоговой политики для оценки возможности и степени влияния налогового потенциала на региональную экономику и социальную сферу.
description: The article analyzes the grant support as a tool for the spatial development of regions. It is substantiated that the effectiveness of the state as a regulator could be achieved through the correct determination of tools for enhancing spatial development using various social and economic indicators. The main objectives of the regional tax policy for assessing the possibility and degree of influence of tax potential on the regional economy and social sphere are formulated.
The Conformal Anomaly of M5-Branes
Creators: name: Maxfield, Travis
name: Sethi, Savdeep
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the conformal anomaly for N M5-branes grows like $N^3$. The method we employ relates Coulomb branch interactions in six dimensions to interactions in four dimensions using supersymmetry. This leads to a relation between the six-dimensional conformal anomaly and the conformal anomaly of N=4 Yang-Mills. Along the way, we determine the structure of the four derivative interactions for the toroidally compactified (2,0) theory, while encountering interesting novelties in the structure of the six derivative interactions.
description: 38 pages, LaTeX; references added
Comparing User Perceptions of Anti-Stalkerware Apps with the Technical Reality
Creators: name: Fassl, Matthias
name: Anell, Simon
name: Houy, Sabine
name: Lindorfer, Martina
name: Krombholz, Katharina
Publisher: name: CISPA
Year: 2023

description: Every year an increasing number of users face stalkerware on their phones. Many of them are victims of intimate partner surveillance (IPS) who are unsure how to identify or remove stalkerware from their phones. An intuitive approach would be to choose anti-stalkerware from the app store. However, a mismatch between user expectations and the technical capabilities can produce an illusion of security and risk compensation behavior (i.e., the Peltzmann effect). We compare users' perceptions of anti-stalkerware with the technical reality. First, we applied thematic analysis to app reviews to analyze user perceptions. Then, we performed a cognitive walkthrough of two prominent anti-stalkerware apps available on the Google PlayStore and reverse-engineered them to understand their detection features. Our results suggest that users base their trust on the look and feel of the app, the number and type of alerts, and the apps' affordances. We also found that app capabilities do not correspond to the users' perceptions and expectations, impacting their practical effectiveness. We discuss different stakeholders' options to remedy these challenges and better align user perceptions with the technical reality.
Taraxacum
Creators: name: Uhlemann, Ingo
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Taraxacum

description: Taraxacum sect. Fontana
 Diese in der montanen bis alpinen Stufe an nassen Standorten (Quellstellen, Bach- und Seeufer, anmoorigen Bereiche usw.) recht häufige Sektion zählt zu den taxonomisch schwierigsten im Gebiet. Obwohl der Sektionstypus, T. fontanum, aus dem Senderstal südlich von Innsbruck gesammelt wurde (KIRSCHNER & ŠTĚPÁNEK 1997) und damit aus Österreich stammt, muss der Kenntnisstand bei dieser Sektion gegenwärtig als völlig unzureichend eingeschätzt werden. Zwei beschriebene Arten wurden vom Autor bisher an ihren Typusfundorten untersucht, dabei wurden T. pseudofontanum – bisher der Sektion Alpina zugeordnet – und T. insubricum als identisch erkannt.
description: Published as part of Uhlemann, Ingo, 2011, Notizen zur Taraxacum-Flora Österreichs und Südtirols, pp. 27-53 in Neilreichia 6 on page 46, DOI: 10.5281/zenodo.303107
To hash or not to hash: A security assessment of CSP's unsafe-hashes expression
Creators: name: Stolz, Peter
name: Roth, Sebastian
name: Stock, Ben
Publisher: name: CISPA
Year: 2023

description: More and more people use the Web on a daily basis. We use it for communicating, doing bank transactions, and entertainment. This popularity of the Web has made it one of the main targets of attacks, most prominently Cross-Site Scripting (XSS). To mitigate the effect of those attacks, the prevalence of the Content Security Policy (CSP) is increasing. Such a policy allows developers to control the content that should be allowed on their Web applications precisely. Because this content includes JavaScript (via the script-src directive), it can also be an effective tool to mitigate the damage of markup injections such as XSS. Developers can specify fine-grained policies for scripts to only allow trusted third parties and disallow the usage of functions like eval and its derivatives that directly execute strings as code. As the whole Web is still evolving, so is CSP. The experimental source-expression unsafe-hashes aims to ease the adoption of secure CSPs, by allowing trusted scripts to be used as inline event handlers for HTML tags, which is currently only possible by blindly allowing all inline scripts to be executed. Our goal is to analyze if this expression is able to improve the security of a Web application or if it mainly provides a false sense of security because it still enables attackers to bypass the CSP. We built an automatic crawler utilizing dynamic JavaScript analysis using taint tracking and forced execution to detect security vulnerabilities of inline event handlers. This crawler visited 753,715 unique URLs from the Alexa Top 1,000 domains up to a maximum of 500 URLs per domain. We collected a total of 735,105 individual event handlers, where 443 of those had attribute values that flow into a dangerous JavaScript sink. Our manual analysis of the event handlers revealed that 370 of those handlers on 34 different domains are still vulnerable in presence of a CSP that contains the unsafe-hashes expression. We show that attackers can exploit these flows with only partial injections, such as adding new attributes to existing tags in most cases and discuss the impact of our findings on the future of the CSP standard.
title: Особенности формирования единого цифрового образовательного пространства
title: Features of a Single Digital Educational Space Formation
Creators: name: Ширинкина, Елена Викторовна
Publisher: name: Издательский центр СурГУ
Year: 2019

description: Настоящая статья посвящена весьма актуальной теме формирования свободной образовательной информационной среды в условиях интернационализации образования и глобальной цифровизации различных социальных сфер, в частности экономики. Одним из важнейших факторов слабой конкурентоспособности вузов является их слабая мотивация во взаимосвязи с потребностями рынка. Подняты важные задачи, стоящие перед сферой высшего образования, одной из которых, требующей скорого решения, является дефицит высококвалифицированных кадров. На основании анализа мировых тенденций, научной литературы и экспертных заключений отмечены важные шаги по инновационному преображению образовательной сферы в свободное единое цифровое пространство.
description: The article is devoted to a very relevant issue that is the formation of a free educational information environment in the context of the internationalization of education and the global digitalization of various social spheres, in particular, the economy. One of the most important factors of the competitive weakness of universities is its weak motivation concerning the requirements of the market. The important issues facing the institutions of higher education are noted. One of these issues is the shortage of highly qualified personnel. Based on the analysis of global trends, scientific literature and expert opinions, important steps to the innovative transformation of the educational sphere into a free single digital space are presented.
Coupling dehydrogenation of ethylbenzene with hydrogenation of nitrobenzene in an autothermal catalytic membrane reactor
Creators: name: Abo-Ghander, Nabeel Salim M.
Publisher: name: University of British Columbia
Year: 2011

description: Dehydrogenation of ethylbenzene and hydrogenation of nitrobenzene form an interesting pair of reactions to be coupled in a catalytic membrane reactor. The former is reversible and thermodynamically limited, supplying hydrogen with a net endothermality, while the latter is irreversible and exothermic, consuming hydrogen to produce aniline. In this work, coupling of these two reactions is simulated in a catalytic fixed bed membrane reactor where hydrogen produced on the dehydrogenation side is transferred through hydrogen membranes to the hydrogenation side where it reacts to produce aniline. Heat generated on the hydrogenation side is transferred to the dehydrogenation side, where it is utilized by the endothermic dehydrogenation reaction to improve the styrene yield. A pseudo-homogeneous model for the coupled reactor based on the concept of fixed bed reactors accounting for both the diffusion of hydrogen and transfer of heat is first developed. The effects of the operating and design parameters considered on the production of styrene and aniline show conflicting behaviour, i.e. improving the yield of styrene results in decreased production of aniline. Consequently, the cocurrent configuration of the coupled reactor was optimized within constraints so that it can be operated effectively to produce ~98% styrene as a one limiting option or ~80% aniline at the other extreme. The intraparticle diffusion resistance, a major limitation in fixed bed reactors, is evaluated by developing a heterogeneous reactor model based on Fickian diffusion and the dusty gas model for both isothermal and non-isothermal catalyst pellets. Both heterogeneous models predict a significant reduction in yield and conversion relative to the pseudo-homogeneous model, indicating the importance of heterogeneity. This reduction is generally less severe for the dusty gas model than for Fickian diffusion. The mean square deviation and absolute deviation along the reactor are calculated for all models relative to the heterogeneous reactor model with dusty gas for non-isothermal catalyst pellets, considered to be the most rigorous model tested. Assuming isothermality causes larger deviations than assuming Fickian diffusion. The deviations in the predictions of the homogenous model and the heterogeneous models from those of the dusty gas model for non-isothermal pellets are ~6% and ~11%, respectively.
Empirical Analysis of Asymmetric Cost Behavior
Creators: name: Lee, Joo Hyung
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Accounting

description: The dominant cost behavior model described in current management accounting textbooks is based on the classification of costs into fixed costs and variable costs. Although this cost behavior model provides insights about how costs behave in relation to the volume of production, it does not take into account managers’ role in cost management as circumstances change over time. The focus of my dissertation is on the asymmetric cost behavior (ACB) model that relates changes in costs to changes in cost drivers between periods and considers the role of managers in decision-making. Based on prior ACB literature, my first study develops and estimates a model of operating cost behavior that includes two cost drivers: sales revenue as a volume of activity driver and property, plant, and equipment in use (PP&E) as a physical capacity driver. My study finds that changes in selling, general and administrative (SG&A) costs separate between the two cost drivers, and that the explanatory power of an asymmetric cost behavior model including a second capacity driver is significantly greater than the explanatory power of the single-driver cost behavior model. In my second study, I document that cost asymmetry varies systematically across life-cycle stages in a manner that reflects the option value of future revenue changes. This indicates that managers’ decisions whether to keep or release slack resources is conditional on firm circumstances and that managers appraise slack resources as real options. Managing cash flows is an important concern facing managers, especially in highly uncertain business environments. In my third study, I test whether operating cash outflows are sticky and find that they are. Also, I test whether stickiness in operating cash outflows is influenced by short-term financial constraints represented by the current ratio and find that it is. These findings contribute to the sticky costs literature by isolating changes in operating cash outflows associated with changes in revenue.
Two Particle Correlations with Direct Photon and pi0 Triggers in 200 GeV p+p and Au+Au Collisions
Creators: name: Nguyen, Matthew
Publisher: name: Zenodo
Year: 2009
Subjects: π0
photon
fragmentation
correlations

description: The measurements of the associated production of charged hadrons of 1< pT < 5 GeV are performed using leading π0 and direct photon triggers of 5 < pT < 15 GeV. The sensitivity of two-particle correlations to the the fragmentation function is investigated by comparing measurements of quantities such as the fragmentation variable xE to several parameterizations of quark and gluon fragmentation functions in the same kT smeared model.
B-Cos Networks: Alignment Is All We Need for Interpretability
Creators: name: Böhle, Moritz
name: Fritz, Mario
name: Schiele, Bernt
Publisher: name: CISPA
Year: 2023

description: We present a new direction for increasing the interpretability of deep neural networks (DNNs) by promoting weight-input alignment during training. For this, we propose to replace the linear transforms in DNNs by our B-cos transform. As we show, a sequence (network) of such transforms induces a single linear transform that faithfully summarises the full model computations. Moreover, the B-cos transform introduces alignment pressure on the weights during optimisation. As a result, those induced linear transforms become highly interpretable and align with task-relevant features. Importantly, the B-cos transform is designed to be compatible with existing architectures and we show that it can easily be integrated into common models such as VGGs, ResNets, InceptionNets, and DenseNets, whilst maintaining similar performance on ImageNet. The resulting explanations are of high visual quality and perform well under quantitative metrics for interpretability. Code available at github.com/moboehle/B-cos.
Spin transport in the XXZ chain at finite temperature and momentum
Creators: name: Steinigeweg, Robin
name: Brenig, Wolfram
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the role of momentum for the transport of magnetization in the spin-1/2 Heisenberg chain above the isotropic point at finite temperature and momentum. Using numerical and analytical approaches, we analyze the autocorrelations of density and current and observe a finite region of the Brillouin zone with diffusive dynamics below a cut-off momentum, and a diffusion constant independent of momentum and time, which scales inversely with anisotropy. Lowering the temperature over a wide range, starting from infinity, the diffusion constant is found to increase strongly while the momentum space cut-off for diffusion decreases. Above the cut-off momentum diffusion breaks down completely.
description: 5 pages, 5 figures (figure 2 added)
Star cluster evolution in barred disc galaxies. I. Planar periodic orbits
Creators: name: Berentzen, I.
name: Athanassoula, E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The dynamical evolution of stellar clusters is driven to a large extent by their environment. Several studies so far have considered the effect of tidal fields and their variations, such as, e.g., from giant molecular clouds, galactic discs, or spiral arms. In this paper we will concentrate on a tidal field whose effects on star clusters have not yet been studied, namely that of bars. We present a set of direct N-body simulations of star clusters moving in an analytic potential representing a barred galaxy. We compare the evolution of the clusters moving both on different planar periodic orbits in the barred potential and on circular orbits in a potential obtained by axisymmetrising its mass distribution. We show that both the shape of the underlying orbit and its stability have strong impact on the cluster evolution as well as the morphology and orientation of the tidal tails and the sub-structures therein. We find that the dissolution time-scale of the cluster in our simulations is mainly determined by the tidal forcing along the orbit and, for a given tidal forcing, only very little by the exact shape of the gravitational potential in which the cluster is moving.
description: 15 pages, 17 figures, 5 tables; accepted for publication in MNRAS. Complementary movies can be be found at this http URL http://lam.oamp.fr/research/dynamique-des-galaxies/scientific-results/star-cluster-evolution/
Network Apps Certification Tools and Marketplace development (final)
Creators: name: D. Artuñedo
Publisher: name: Zenodo
Year: 2023
Subjects: Network App
CAPIF
NEF
TSN
Marketplace
Blockchain

description: The main goal of the present deliverable is to outline the final release of those tools, initiatives, and methodologies that are implemented for the realization of the EVOLVED-5G Certification Process and Environment, with a focus on the architectural components' implementation, effectiveness, and security. These architectural components define the Network App Certification Process and the Marketplace, which are used to distribute the certified Network Apps. This document presents the outcome of task “T3.4: Network App Certification Tools and Marketplace development” providing a final description of the selected tools for the design of the automated Certification Process, the Test engine for running certification tests, and the description of tests that are part of the Certification process.
 The deliverable represents an upgrade on D3.2 “NetApp Certification Tools and Marketplace development” in the following sense: The CI/CD services supporting the implementation of the certification process has been revisited, including final versions of NEF, including token integration with CAPIF. CAPIF, including new methods that are fundamental for certifying API usage during certification testing TSN, for certifying the usage of deterministic communication in the Network Application New tools, such as Helm for deployment automation Removal tools as Terraform, no longer necessary as K8s environments are static there is no need for K8s clusters re-deployment. Openshift, as container execution platform, has been upgraded to version 4.10. A new Kubernetes cluster has been created for EVOLVED-5G project in COSMOTE premises as part of the Athens certification environment with the purpose of hosting various applications. The conceptualization of the certification pipeline definition is now complete, ready for implementation in WP5 Marketplace: The two-step design process for the Marketplace is finalised as well as the final high-level architecture. All components that were envisioned or intermediately released and reported in D3.2, are now completed and finalised, achieving the full implementation of Marketplace. It is worth highlighting the full implementation of the blockchain integration module, the full integration of the marketplace with the open repository (antifactory) as well as the full integration of the marketplace with OpenShift, and marketplace-ready upgrade for network app versioning
A Fault Tolerant, Dynamic and Low Latency BDII Architecture for Grids
Creators: name: Osman, Asif
name: Anjum, Ashiq
name: Batool, Naheed
name: McClatchey, Richard
Publisher: name: arXiv
Year: 2012
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: The current BDII model relies on information gathering from agents that run on each core node of a Grid. This information is then published into a Grid wide information resource known as Top BDII. The Top level BDIIs are updated typically in cycles of a few minutes each. A new BDDI architecture is proposed and described in this paper based on the hypothesis that only a few attribute values change in each BDDI information cycle and consequently it may not be necessary to update each parameter in a cycle. It has been demonstrated that significant performance gains can be achieved by exchanging only the information about records that changed during a cycle. Our investigations have led us to implement a low latency and fault tolerant BDII system that involves only minimal data transfer and facilitates secure transactions in a Grid environment.
description: 18 pages; 10 figures; 4 tables