cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Combining computational fluid dynamics and magnetic resonance imaging data using lattice Boltzmann based topology optimisation
Creators: name: Klemens, Fabian
Publisher: name: Karlsruhe
Year: 2020

description: This thesis presents the combination of magnetic resonance imaging (MRI) measurements and computational fluid dynamics (CFD) to reduce statistical measurement noise and identify objects and finer structures in the MRI data. Using a lattice Boltzmann based topology optimisation approach, the method allows those solutions that best match the measured flow field but satisfy the macroscopic conservation laws of fluid flow, here mass and momentum conservation. This combination is formulated as a distributed control problem that minimises the distance between measured and simulated flow field, the latter being the solution of a parametrised Boltzmann equation with Bhatnagar-Gross-Krook collision operator, where the controls represent the porosity distributed in the domain. The problem is solved with an adjoint lattice Boltzmann method using the open source software OpenLB.
Duration modeling with semi-Markov Conditional Random Fields for keyphrase extraction
Creators: name: Lu, Xiaolei
name: Chow, Tommy W. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Existing methods for keyphrase extraction need preprocessing to generate candidate phrase or post-processing to transform keyword into keyphrase. In this paper, we propose a novel approach called duration modeling with semi-Markov Conditional Random Fields (DM-SMCRFs) for keyphrase extraction. First of all, based on the property of semi-Markov chain, DM-SMCRFs can encode segment-level features and sequentially classify the phrase in the sentence as keyphrase or non-keyphrase. Second, by assuming the independence between state transition and state duration, DM-SMCRFs model the distribution of duration (length) of keyphrases to further explore state duration information, which can help identify the size of keyphrase. Based on the convexity of parametric duration feature derived from duration distribution, a constrained Viterbi algorithm is derived to improve the performance of decoding in DM-SMCRFs. We thoroughly evaluate the performance of DM-SMCRFs on the datasets from various domains. The experimental results demonstrate the effectiveness of proposed model.
title: Seemer Bote, Nr. 15 (Dezember 1974)
title: Informationsorgan für Winterthur-Seen und Umgebung
titleType: Subtitle
Creators: name: (:Unkn) Unknown
Publisher: name: Zentralbibliothek Zürich
Year: 1974
Subjects: subject: 070 Publizistische Medien, Journalismus, Verlagswesen
subject: 307 Gemeinschaften
subject: Seen (Winterthur)
subject: Ortsverein Seen
subject: Stadtteilkultur

description: Bis Nr. 91 (März 1987) unter dem Titel "Seener Bote" erschienen
Obscuration-dependent evolution of Active Galactic Nuclei
Creators: name: Buchner, Johannes
name: Georgakakis, Antonis
name: Nandra, Kirpal
name: Brightman, Murray
name: Menzel, Marie-Luise
name: Liu, Zhu
name: Hsu, Li-Ting
name: Salvato, Mara
name: Rangel, Cyprian
name: Aird, James
name: Merloni, Andrea
name: Ross, Nicholas
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We aim to constrain the evolution of AGN as a function of obscuration using an X-ray selected sample of $\sim2000$ AGN from a multi-tiered survey including the CDFS, AEGIS-XD, COSMOS and XMM-XXL fields. The spectra of individual X-ray sources are analysed using a Bayesian methodology with a physically realistic model to infer the posterior distribution of the hydrogen column density and intrinsic X-ray luminosity. We develop a novel non-parametric method which allows us to robustly infer the distribution of the AGN population in X-ray luminosity, redshift and obscuring column density, relying only on minimal smoothness assumptions. Our analysis properly incorporates uncertainties from low count spectra, photometric redshift measurements, association incompleteness and the limited sample size. We find that obscured AGN with $N_{H}>{\rm 10^{22}\, cm^{-2}}$ account for ${77}^{+4}_{-5}\%$ of the number density and luminosity density of the accretion SMBH population with $L_{\rm X}>10^{43}\text{ erg/s}$, averaged over cosmic time. Compton-thick AGN account for approximately half the number and luminosity density of the obscured population, and ${38}^{+8}_{-7}\%$ of the total. We also find evidence that the evolution is obscuration-dependent, with the strongest evolution around $N_{H}\thickapprox10^{23}\text{ cm}^{-2}$. We highlight this by measuring the obscured fraction in Compton-thin AGN, which increases towards $z\sim3$, where it is $25\%$ higher than the local value. In contrast the fraction of Compton-thick AGN is consistent with being constant at $\approx35\%$, independent of redshift and accretion luminosity. We discuss our findings in the context of existing models and conclude that the observed evolution is to first order a side-effect of anti-hierarchical growth.
description: Published in ApJ
Determination of potentially harmful element (PHE) distribution in water bodies in Krugersdorp, a mining city in the West Rand, Gauteng Province, South Africa.
Creators: name: Shapi, Michael
name: Jordaan, Maryam Amra
name: Mbambo, Andile Truelove
name: Davies, Theophilus Clavell
name: Chirenje, Emmanuel
name: Dube, Mpumelelo
Publisher: name: Mangosuthu University of Technology (MUT)
Year: 2023
Subjects: Data mining and knowledge discovery
Mining engineering
Wildlife and habitat management
Environmental management

description: The town of Krugersdorp in South Africa is the locus of an important wildlife game reserve, the Krugersdorp Game Reserve (KGR), which is juxtaposed by the (<1000 m) down-gradient of the large-scale gold mining outfits of Mintails Mogale Gold (MMG) and Rand Uranium (RU). The aim of the study was to determine the concentration levels of potentially harmful elements (PHEs) that have accumulated due to post-mining activities in the local water bodies in Krugersdorp and to use these data as a prerequisite and basis for formulation of the most appropriate remediation measures. Thirty water samples were collected and analysed in situ for: water temperature, pH, dissolved oxygen (mgl−1 ), dissolved oxygen (%), total dissolved solids (TDS), oxidation/reduction potential (ORP), and electrical conductivity (EC). This was later followed by laboratory analyses of aliquots of the water samples by ICP-MS for twelve PHEs whose concentration ranges were: As (0.70–32.20), Ag (0.16–105.00), Al (1.00–41.00), Co (0.07–6.16), Cr (1.60–5.00), Cu (0.80–8.00), Fe (23.00–117.00), Mn (0.14–12 255.00), Ni (0.20–7.00), Pb (0.80–6.30), V (1.90–55.20), and Zn (2.20–783.00). Areas of the town where excessive concentration levels of these elements have negatively impacted the health of its wildlife population and surrounding ecosystems are identified, and credible mitigation measures proffered.
The galaxy cluster outskirts probed by Chandra
Creators: name: Morandi, Andrea
name: Sun, Ming
name: Forman, William
name: Jones, Christine
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We studied the physical properties of the intracluster medium in the virialization region of a sample of 320 clusters ($0.056 3$ keV) in the Chandra archive. With the emission measure profiles from this large sample, the typical gas density, gas slope and gas fraction can be constrained out to and beyond $R_{200}$. We observe a steepening of the density profiles beyond $R_{500}$ with $β\sim 0.68$ at $R_{500}$ and $β\sim 1$ at $R_{200}$ and beyond. By tracking the direction of the cosmic filaments approximately with the ICM eccentricity, we report that galaxy clusters deviate from spherical symmetry, with only small differences between relaxed and disturbed systems. We also did not find evolution of the gas density with redshift, confirming its self-similar evolution. The value of the baryon fraction reaches the cosmic value at $R_{200}$: however, systematics due to non-thermal pressure support and clumpiness might enhance the measured gas fraction, leading to an actual deficit of the baryon budget with respect to the primordial value. This study has important implications for understanding the ICM physics in the outskirts.
description: MNRAS in press: conclusions the same, full data table included
The air shower simulation framework CORSIKA 8: Development and first applications to muon production
Creators: name: Reininghaus, Maximilian
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2022

description: Tools to accurately simulate extensive air showers are a key asset for the understanding of ultra-high energy cosmic rays. In this thesis, the Monte Carlo air shower simulation framework CORSIKA 8 is presented. CORSIKA 8 constitutes a next-generation code that aims to combine new functionality with a high level of flexibility and modularity. Notable aspects include the ability to freely combine an arbitrary number of physical processes and to setup simulation environments consisting of several media, including custom atmospheric models. A special feature is the possibility to inspect the complete lineage of particles, which allows linking particles on ground with any of their preceding generations. After describing the foundations of Monte Carlo shower simulations, I explain the architecture of CORSIKA 8 in depth. Focusing on the hadronic and muonic shower components, results obtained with CORSIKA 8 and other simulation codes are compared with each other. Even when using the same hadronic interaction models, a number of differences are observed, in particular regarding low-energy interactions, which have a considerable impact on the lateral distribution of muons at kilometre-scale distances up to a factor of two and more. Making use of the lineage technique, I study the phase space of hadronic interactions in order to quantify the importance for muon production and compare the results with the Heitler–Matthews toy model. At high energies (√s ≳ 500 GeV) particle production in the forward region is confirmed to be especially important, while the central region becomes relevant at low energies (√s ≲ 50 GeV) in particular for muons at large distances. Additionally, I study the impact of modified hadronic interactions on air shower observables. Modified hadron-air cross-sections mainly affect the longitudinal development, causing a larger shift of the maximum muon production depth than of the shower maximum. Artificially increased ρ 0 production, on the other hand, can greatly increase the number of muons with only small impact on other observables. Finally, I also consider the possibility of large multiplicity boson production in the first interaction and study its phenomenology in air showers with a simple toy model. Within the scope of this thesis, I developed the foundations of the CORSIKA 8 framework. Based on the studies that have become possible with CORSIKA 8, I point out some new opportunities towards an improved understanding of muons in air showers.
title: Ανάλυση των επιδόσεων εταιρειών του Χρηματιστηρίου Αξιών Αθηνών που ακολουθούν πρακτικές σε θέματα περιβάλλοντος, κοινωνίας και εταιρικής διακυβέρνησης
title: Evaluation of the performance of firms in the ESG index of the Athens stock exchange
Creators: name: Σιαχος Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2023

description: Environmental – Social – Governance, or ESG, has been a consistent topic of discussion amongst investors in recent years and continues to gain more attention each year. However, as every fresh and evolving topic, ESG still has some areas of uncertainty surrounding it. For example, some terminology involved in ESG investing is still ambiguous in nature, although it is certainly moving in a positive direction with progressive action to clarify the related definitions, strategies, and methodologies. Furthermore, it is well known that the ESG rankings and ratings may differ greatly between different rating agencies and providers. Thus, the presented dissertation attempts to answer the aforementioned concerns by providing a clear outline and classification of the existing terminology, an introduction to the ESG rating agencies including their rating systems, as well as these agencies’ purposes and current issues such as the quality of ESG information and ratings. A brief historical regression is provided for better understanding of the evolution of this complicated space. After settling some theoretical aspects of ESG, the key aim of this dissertation is the evaluation of the performance of the companies ATHEX_ESG, a financial index of the Athens Stock Exchange, is consisted of for the years 2018 through 2020. The methodology to support this evaluation is consisted of two parts. Firstly, several financial ratios are calculated for each company, covering a wide range of their financial wellness. These ratios are then compared both historically for every company as well as between companies of the same sectors. Secondly, multicriteria decision analysis, or MDCA, is implemented, used specifically ELECTRE III, a multicriteria methodology aiming to rank all of the above companies based on their performance on the financial ratios mentioned before. The first key finding, determined through several reports and in accordance with analysts, is that ESG adoption will continue amongst companies as well as investors who are now more willing to apply more relevant data to their investment decisions. A final finding regarding the evaluation of the ATHEX_ESG companies demonstrates that there is no clear correlation between an increase in their performance with Environmental, Social and Governance adoption, as some of them did not see an improvement in their financial ratios in comparison to others, a conclusion opposite to the majority of the existing literature.
title: Bleu nuit, rouge sang, vert espérance. Les très riches heures de la torture
Creators: name: Cordiner, Valerio
Publisher: name: Roma Tre-Press
Year: 2014

description: Résumé:

Plus de cinquante ans s’étant écoulés de la signature des Accords d’Évian, la torture, qui avait déjà soulevé à ce moment-là un débat animé notamment entre les philosophes et les gens de lettres, est désormais devenue le mot clé de la guerre d’Algérie. Dans cette étude, après un aperçu sommaire de la question d’un point de vue juridique et au terme d’une analyse le plus possible objective des événements algériens concernant la torture, on avance l’hypothèse que cette véritable obsession historiographique pour la violence et la repression ne vise, à l’instar de ce qui s’est passé pour le procès à 89 voire pour le syndrome de Vichy, qu’un but polémique: la mise en cause des idéologies progressistes répandues à l’époque, en l’espèce le jacobinisme et le marxisme.

Abstract:

More than fifty years after the Evian Accords, torture - once a matter of heated discussions among philosophers and people of letters - has become a central topic in Algerian War historiography. The present essay suggests that this new obsession with violence and repression by historians is merely motivated by a polemical purpose. Similarly to what happened with the proceedings against 89 and the Vichy syndrome, the current purpose is to raise concerns about the dominant progressive ideologies of the time, namely, Jacobinism and Marxism. In support of this hypothesis, the essay offers an examination of the issue from a juridical perspective, and an analysis of specific torture cases in the context of the Algerian war.
description: KRYPTON – VOL.3 – 2014 – TORTURE
On the Theoretical Properties of Noise Correlation in Stochastic Optimization
Creators: name: Lucchi, Aurelien
name: Proske, Frank
name: Orvieto, Antonio
name: Bach, Francis
name: Kersting, Hans
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Studying the properties of stochastic noise to optimize complex non-convex functions has been an active area of research in the field of machine learning. Prior work has shown that the noise of stochastic gradient descent improves optimization by overcoming undesirable obstacles in the landscape. Moreover, injecting artificial Gaussian noise has become a popular idea to quickly escape saddle points. Indeed, in the absence of reliable gradient information, the noise is used to explore the landscape, but it is unclear what type of noise is optimal in terms of exploration ability. In order to narrow this gap in our knowledge, we study a general type of continuous-time non-Markovian process, based on fractional Brownian motion, that allows for the increments of the process to be correlated. This generalizes processes based on Brownian motion, such as the Ornstein-Uhlenbeck process. We demonstrate how to discretize such processes which gives rise to the new algorithm fPGD. This method is a generalization of the known algorithms PGD and Anti-PGD. We study the properties of fPGD both theoretically and empirically, demonstrating that it possesses exploration abilities that, in some cases, are favorable over PGD and Anti-PGD. These results open the field to novel ways to exploit noise for training machine learning models.
Interactions between financial and environmental networks in OECD countries
Creators: name: Ruzzenenti, Franco
name: Joseph, Andreas
name: Ticci, Elisa
name: Vozzella, Pietro
name: Gabbi, Giampaolo
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Finance (q-fin.GN)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We analyse a multiplex of networks between OECD countries during the decade 2002-2010, which consists of five financial layers, given by foreign direct investment, equity securities, short-term, long-term and total debt securities, and five environmental layers, given by emissions of N O x, P M 10 SO 2, CO 2 equivalent and the water footprint associated with international trade. We present a new measure of cross-layer correlations between flows in different layers based on reciprocity. For the assessment of results, we implement a null model for this measure based on the exponential random graph theory. We find that short-term financial flows are more correlated with environmental flows than long-term investments. Moreover, the correlations between reverse financial and environmental flows (i.e. flows of different layers going in opposite directions) are generally stronger than correlations between synergic flows (flows going in the same direction). This suggests a trade-off between financial and environmental layers, where, more financialised countries display higher correlations between outgoing financial flows and incoming environmental flows from lower financialised countries, which could have important policy implications. Five countries are identified as hubs in this finance-environment multiplex: The United States, France, Germany, Belgium-Luxembourg and the United Kingdom.
description: Supplementary Information provided
Towards Machine-assisted Disclosure Assessment with DDI-CDI, DPV and sdcMicro
Creators: name: Lungley, Deidre
name: Gilders, Thomas
name: Bell, Darren
name: Rumiancev, Artiom
Publisher: name: Zenodo
Year: 2022

description: At the UK Data Archive (UKDA) we have a vision for interoperability of sensitive and disclosive data in the next decade. We will demonstrate a “Data Product Builder”: a tool which guides researchers through selecting and building a subsetted data product from one or more linked datasets and dynamically filters the responses and variables as appropriate for their research. With this tool, powered by DDI-CDI metadata, we aim to break open the current binary utility/risk trade-off of Secure Access or Open Access when it comes to sensitive/disclosive datasets, particularly in Social Science. Study and variable metadata, enhanced with Data Privacy Vocabulary (DPV) concepts, feed into risk functions provided by sdcMicro (a well-used command-line tool we have rewritten as Python web services) which drive machine-assisted disclosure assessment, which in turn feeds a decision tree of real-time access outcomes, providing researchers with richer and more flexible choices based on real-time mitigations of key variable sensitivity e.g. (global recoding, top/bottom recoding, etc.). As well as a live demo of the tool, we outline the wider context of interoperability for sensitive data including other ontologies such as Data Use ontology and Open Digital Rights Language.
Use of Non-concurrent Common Control in Master Protocols in Oncology Trials: Report of an American Statistical Association Biopharmaceutical Section Open Forum Discussion
Creators: name: Sridhara, Rajeshwari
name: Marchenko, Olga
name: Jiang, Qi
name: Pazdur, Richard
name: Posch, Martin
name: Berry, Scott
name: Theoret, Marc
name: Shen, Yuan Li
name: Gwise, Thomas
name: Hess, Lorenzo
name: Raven, Andrew
name: Rantell, Khadija
name: Roes, Kit
name: Simon, Richard
name: Redman, Mary
name: Ji, Yuan
name: Lu, Cindy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: 62P10

description: This article summarizes the discussions from the American Statistical Association (ASA) Biopharmaceutical (BIOP) Section Open Forum that took place on December 10, 2020 and was organized by the ASA BIOP Statistical Methods in Oncology Scientific Working Group, in coordination with the US FDA Oncology Center of Excellence. Diverse stakeholders including experts from international regulatory agencies, academicians, and representatives of the pharmaceutical industry engaged in a discussion on the use of non-concurrent control in Master Protocols for oncology trials. While the use of non-concurrent control with the concurrent control may increase the power of detecting the therapeutic difference between a treatment and the control, the panelists had diverse opinion on the statistical approaches for modeling non-concurrent and concurrent controls. Some were more concerned about the temporality of the non-concurrent control and bias introduced by different confounders related to time, e.g., changes in standard of care, changes in patient population, changes in recruiting strategies, changes in assessment of endpoints. Nevertheless, in some situations such as when the recruitment is extremely challenging for a rare disease, the panelists concluded that the use of a non-concurrent control can be justified.
Exploring Anticorrelations and Light Element Variations in Northern Globular Clusters Observed by the APOGEE Survey
Creators: name: Meszaros, Szabolcs
name: Martell, Sarah L.
name: Shetrone, Matthew
name: Lucatello, Sara
name: Troup, Nicholas W.
name: Bovy, Jo
name: Cunha, Katia
name: Garcia-Hernandez, Domingo A.
name: Overbeek, Jamie C.
name: Prieto, Carlos Allende
name: Beers, Timothy C.
name: Frinchaboy, Peter M.
name: Perez, Ana E. Garcia
name: Hearty, Fred R.
name: Holtzman, Jon
name: Majewski, Steven R.
name: Nidever, David L.
name: Schiavon, Ricardo P.
name: Schneider, Donald P.
name: Sobeck, Jennifer S.
name: Smith, Verne V.
name: Zamora, Olga
name: Zasowski, Gail
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the light-element behavior of red giant stars in Northern globular clusters (GCs) observed by the SDSS-III Apache Point Observatory Galactic Evolution Experiment (APOGEE). We derive abundances of nine elements (Fe, C, N, O, Mg, Al, Si, Ca, and Ti) for 428 red giant stars in 10 globular clusters. The intrinsic abundance range relative to measurement errors is examined, and the well-known C-N and Mg-Al anticorrelations are explored using an extreme-deconvolution code for the first time in a consistent way. We find that Mg and Al drive the population membership in most clusters, except in M107 and M71, the two most metal-rich clusters in our study, where the grouping is most sensitive to N. We also find a diversity in the abundance distributions, with some clusters exhibiting clear abundance bimodalities (for example M3 and M53) while others show extended distributions. The spread of Al abundances increases significantly as cluster average metallicity decreases as previously found by other works, which we take as evidence that low metallicity, intermediate mass AGB polluters were more common in the more metal poor clusters. The statistically significant correlation of [Al/Fe] with [Si/Fe] in M15 suggests that $^{28}$Si leakage has occurred in this cluster. We also present C, N and O abundances for stars cooler than 4500 K and examine the behavior of A(C+N+O) in each cluster as a function of temperature and [Al/Fe]. The scatter of A(C+N+O) is close to its estimated uncertainty in all clusters and independent on stellar temperature. A(C+N+O) exhibits small correlations and anticorrelations with [Al/Fe] in M3 and M13, but we cannot be certain about these relations given the size of our abundance uncertainties. Star-to-star variations of $α-$elements (Si, Ca, Ti) abundances are comparable to our estimated errors in all clusters.
description: 22 pages, 13 figures, 8 tables, accepted to AJ, fixed some typos in text
title: Evaluating the implementation quality of a vocational education intervention for youth in Dadaab refugee camp in Kenya
title: Evidence of discrimination
titleType: Subtitle
Creators: name: Kunyu Khisoni, David
name: Juang, Linda
name: Moreno Herrera, Lázaro
Publisher: name: Universität Potsdam
Year: 2023
Subjects: subject: 30 Sozialwissenschaften, Soziologie

description: Refugee youth in protracted humanitarian contexts are faced with limited access to quality education. They may sustain traumatic experiences from conflicts and discrimination yet have limited psychosocial support access. Comprehending the magnitude and e􀀀ects of these challenges is vital for designing and executing educational interventions in such contexts. This study evaluates the implementation quality of the Youth Education Pack intervention through the lens of the Inter-agency Network for Education in Emergencies minimum standards framework. It explores the types of discrimination experienced by refugee youth in the Dadaab refugee camp in Kenya. Nine participants comprising refugee students (N = 2), former refugee students (N = 2), teachers (N = 3), and project supervisors (N = 2) participated in the study. The first author conducted interviews and observations in the camp. The data were qualitatively coded deductively and analysed in Nvivo 12. We found that the YEP intervention faced contextual challenges that hindered the achievement of the implementation quality standards outlined in the INEE minimum standards for education. Refugee youth and refugee teachers experienced various forms of discrimination, including at individual, institutional, and structural levels. We conclude that providing refugee youth with an inclusive and high-quality education is central to providing secure and long-term solutions to their challenges and adversities and may promote their psychosocial wellbeing.
description: Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe; 824
Limitations of time-delayed case isolation in heterogeneous SIR models
Creators: name: Hansson, Jonas
name: Govaert, Alain
name: Pates, Richard
name: Tegling, Emma
name: Soltesz, Kristian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Case isolation, that is, detection and isolation of infected individuals in order to prevent spread, is a strategy to curb infectious disease epidemics. Here, we study the efficiency of a case isolation strategy subject to time delays in terms of its ability to stabilize the epidemic spread in heterogeneous contact networks. For an SIR epidemic model, we characterize the stability boundary analytically and show how it depends on the time delay between infection and isolation as well as the heterogeneity of the inter-individual contact network, quantified by the variance in contact rates. We show that network heterogeneity accounts for a restricting correction factor to previously derived stability results for homogeneous SIR models (with uniform contact rates), which are therefore too optimistic on the relevant time scales. We illustrate the results and the underlying mechanisms through insightful numerical examples.
description: 6 pages, 3 figures
title: Patrícia Galvão e o corpo-arquivo de Pagu: a tortura se escreve no
Creators: name: Garbero, Maria Fernanda
Publisher: name: Roma Tre-Press
Year: 2014

description: Resumo:

Este artigo é uma reflexão sobre a tortura na biografia de Patrícia Galvão, intelectual brasileira, conhecida como Pagu e uma figura central nos debates sobre a mulher na cena pública. Capaz de romper com as esferas e projeções do privado, o oikos grego que representa o sentido de lar, ela se insere como uma personagem contundente no plano político do Brasil de meados do século XX. Neste trabalho, proponho uma leitura do corpo feminino torturado que, para seguir caminhante, precisa ser rescrito na palavra, na composição de um arquivo que carece de ‘completude’, ora lida na perspectiva da aporia. Assim, impossibilitada da recomposição, afinal o corpo torturado ostenta a perda e a fragmentação, pretendo pensar nessa escritura que responde a um engajamento que a cada dia ganha novos olhares e significados às demandas contemporâneas.

Abstract:

This article is a reflection on the insertion of the torture in the biography of Patricia Galvao, brazilian intellectual, known as Pagu and a central figure in debates about the presence of women on the public stage. Capable of breaking walls and private projections, the Greek oikos that represents the meaning of home, it fits like a pointed character Brazilian’s politic mid-twentieth century. In this paper, I propose a reading of the female tortured body, to keep walking, needs to be rewritten in speech and composition of a file, a ‘completeness’ on the perspective of aphoria. Thus, in an impossible rehab , after all the tortured body shows the loss and the fragmentation, I intent to think about of this scripture answers the engagement, whose every day gains new perspectives and meanings to contemporary demands
description: KRYPTON – VOL.3 – 2014 – TORTURE
On Chern-Yamabe problem
Creators: name: Angella, Daniele
name: Calamai, Simone
name: Spotti, Cristiano
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B35, 32Q99, 53A30

description: We initiate the study of an analogue of the Yamabe problem for complex manifolds. More precisely, fixed a conformal Hermitian structure on a compact complex manifold, we are concerned in the existence of metrics with constant Chern scalar curvature. In this note, we set the problem and we provide a positive answer when the expected constant Chern scalar curvature is non-positive. In particular, this includes the case when the Kodaira dimension of the manifold is non-negative. Finally, we give some remarks on the positive curvature case, showing existence in some special cases and the failure, in general, of uniqueness of the solution.
The fight against new ideas as an immune response
Creators: name: Bois, Christian
Publisher: name: Zenodo
Year: 2020
Subjects: resistance to change
paradigm change
auto protection against innovation
protective semantic immune systems

description: Next year will be the 20th anniversary of Wikipedia. A great adventure in terms of quantity, a good example of non-inclusivity. We take the "killing of knowledge content on Wikipedia" as an example case for what Serge Moscovici describes as "the fear of ideas leading to rejection" and Peter Sloterdijk "immune shields to protect from semantic lesions". The Board of Wikimedia foundation insists on the non-inclusivity of people, we insist on the process for knowledge exclusion in this paper completed by a previous one - Wikipedia censorship ...
Search for new physics via photon polarization of $b \rightarrow s γ$
Creators: name: Haba, Naoyuki
name: Ishida, Hiroyuki
name: Nakaya, Tsuyoshi
name: Shimizu, Yasuhiro
name: Takahashi, Ryo
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We suggest a discriminant analysis of new physics beyond the standard model through a detection of photon polarization in a radiative B meson decay. This analysis is investigated in SUSY SU(5) GUT with right-handed neutrino and left-right symmetric models. New physics search via CP asymmetry in the same process are also evaluated in each model for comparison. We show that new physics can be found via detecting the photon polarization in a parameter space of TeV energy scale.
description: 20 pages, 8 figures, v2:references added, v3:published version
Crowdsourced-based Deep Convolutional Networks for Urban Flood Depth Mapping
Creators: name: Alizadeh, Bahareh
name: Behzadan, Amir H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: I.2.10; I.4.8; I.5
subject: 94-08, 68T45, 68T07

description: Successful flood recovery and evacuation require access to reliable flood depth information. Most existing flood mapping tools do not provide real-time flood maps of inundated streets in and around residential areas. In this paper, a deep convolutional network is used to determine flood depth with high spatial resolution by analyzing crowdsourced images of submerged traffic signs. Testing the model on photos from a recent flood in the U.S. and Canada yields a mean absolute error of 6.978 in., which is on par with previous studies, thus demonstrating the applicability of this approach to low-cost, accurate, and real-time flood risk mapping.
description: 2022 European Conference on Computing in Construction
Intrinsic Defect Formation in Peptide Self-Assembly
Creators: name: Deng, Li
name: Zhao, Yurong
name: Xu, Hai
name: Wang, Yanting
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In contrast to extensively studied defects in traditional materials, we report here for the first time a systematic investigation of the formation mechanism of intrinsic defects in self-assembled peptide nanostructures. The Monte Carlo simulations with our simplified dynamic hierarchical model revealed that the symmetry breaking of layer bending mode at the two ends during morphological transformation is responsible for intrinsic defect formation, whose microscopic origin is the mismatch between layer stacking along the side-chain direction and layer growth along the hydrogen bond direction. Moreover, defect formation does not affect the chirality of the self-assembled structure, which is determined by the initial steps of the peptide self-assembly process.
description: 10 pages, 5 figures, 31 references
title: Reflexões sobre tortura, regra e vida em Salò, a paródia séria de Pier Paolo Pasolini
Creators: name: Malfatti Viera Corilow, Priscila
Publisher: name: Roma Tre-Press
Year: 2014

description: Resumo:

Nesse artigo intentamos fazer uma leitura de Salò o le 120 giornate di Sodoma a partir do conceito de paródia, explorado por Giorgio Agamben em texto homônimo, e também nos apoiando nas reflexões desse mesmo autor em Altissima povertà sobre o caráter torturante e anulador que a regra tem ao coincidir ponto a ponto com a vida, tal qual acontece no microcosmo criado por Pasolini nessa obra. Buscamos assim, reafirmar o potencial crítico da última produção cinematografica do cineasta.

 Abstract:

In this article we aim to interpret Salò o le 120 giornate di Sodoma, di Pier Paolo Pasolini using the concept of parody which was explored by Giorgio Agambem in his homonymous text, seeking this purpose we have also considered his thoughts in Altissima povertà about torturing and annulling effects that the rules assume when they coincide point to point with life, in the same way it occurs in the microcosm created by Pasolini in Salò. We thereby intend to reafirm the critical potencial of his last cinematographic production.
description: KRYPTON – VOL.3 – 2014 – TORTURE
Ehrenfest Theorem in Precanonical Quantization
Creators: name: Kanatchikov, I. V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the precanonical quantization of fields which is based on the De Donder--Weyl (DW) Hamiltonian formulation and treats the space and time variables on an equal footing. Classical field equations in DW Hamiltonian form are derived as the equations for the expectation values of precanonical quantum operators. This field-theoretic generalization of the Ehrenfest theorem demonstrates the consistency of three aspects of precanonical field quantization: (i) the precanonical representation of operators in terms of the Clifford (Dirac) algebra valued partial differential operators, (ii) the Dirac-like precanonical generalization of the Schrödinger equation without the distinguished time dimension, and (iii) the definition of the scalar product for calculation of expectation values of operators using the Clifford-valued precanonical wave functions.
description: 24 pages. v2: adapted to the Publisher style + intro rewritten + few changes in the text & typos corrected + new refs. added. v3: few minor typos corrected
A Learning-Based Trajectory Planning of Multiple UAVs for AoI Minimization in IoT Networks
Creators: name: Eldeeb, Eslam
name: Pérez, Dian Echevarría
name: Sant'Ana, Jean Michel de Souza
name: Shehab, Mohammad
name: Mahmood, Nurul Huda
name: Alves, Hirley
name: Latva-aho, Matti
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Many emerging Internet of Things (IoT) applications rely on information collected by sensor nodes where the freshness of information is an important criterion. \textit{Age of Information} (AoI) is a metric that quantifies information timeliness, i.e., the freshness of the received information or status update. This work considers a setup of deployed sensors in an IoT network, where multiple unmanned aerial vehicles (UAVs) serve as mobile relay nodes between the sensors and the base station. We formulate an optimization problem to jointly plan the UAVs' trajectory, while minimizing the AoI of the received messages. This ensures that the received information at the base station is as fresh as possible. The complex optimization problem is efficiently solved using a deep reinforcement learning (DRL) algorithm. In particular, we propose a deep Q-network, which works as a function approximation to estimate the state-action value function. The proposed scheme is quick to converge and results in a lower AoI than the random walk scheme. Our proposed algorithm reduces the average age by approximately $25\%$ and requires down to $50\%$ less energy when compared to the baseline scheme.
Lifting for Blind Deconvolution in Random Mask Imaging: Identifiability and Convex Relaxation
Creators: name: Bahmani, Sohail
name: Romberg, Justin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: Functional Analysis (math.FA)
subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper we analyze the blind deconvolution of an image and an unknown blur in a coded imaging system. The measurements consist of subsampled convolution of an unknown blurring kernel with multiple random binary modulations (coded masks) of the image. To perform the deconvolution, we consider a standard lifting of the image and the blurring kernel that transforms the measurements into a set of linear equations of the matrix formed by their outer product. Any rank-one solution to this system of equation provides a valid pair of an image and a blur. We first express the necessary and sufficient conditions for the uniqueness of a rank-one solution under some additional assumptions (uniform subsampling and no limit on the number of coded masks). These conditions are special case of a previously established result regarding identifiability in the matrix completion problem. We also characterize a low-dimensional subspace model for the blur kernel that is sufficient to guarantee identifiability, including the interesting instance of "bandpass"` blur kernels. Next, assuming the bandpass model for the blur kernel, we show that the image and the blur kernel can be found using nuclear norm minimization. Our main results show that recovery is achieved (with high probability) when the number of masks is on the order of $μ\log^{2}L\,\log\frac{Le}μ\,\log\log\left(N+1\right)$ where $μ$ is the \emph{coherence} of the blur, $L$ is the dimension of the image, and $N$ is the number of measured samples per mask.
Quantum Baxter-Belavin R-matrices and multidimensional Lax pairs for Painleve VI
Creators: name: Levin, A.
name: Olshanetsky, M.
name: Zotov, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The quantum elliptic $R$-matrices of Baxter-Belavin type satisfy the associative Yang-Baxter equation in ${\rm Mat}(N,\mathbb C)^{\otimes 3}$. The latter can be considered as noncommutative analogue of the Fay identity for the scalar Kronecker function. In this paper we extend the list of $R$-matrix valued analogues of elliptic function identities. In particular, we propose counterparts of the Fay identities in ${\rm Mat}(N,\mathbb C)^{\otimes 2}$. As an application we construct $R$-matrix valued $2N^2\times 2N^2$ Lax pairs for the Painlevé VI equation (in elliptic form) with four free constants using ${\mathbb Z}_N\times {\mathbb Z}_N$ elliptic $R$-matrix. More precisely, the four free constants case appears for an odd $N$ while even $N$'s correspond to a single constant.
description: 16 pages, minor corrections
Mutual fund flows and performance in Saudi Arabia: analysis of how new factors impact fund flow and performance
Creators: name: Bader Alsubaiei
Publisher: name: Loughborough University
Year: 2019
Subjects: subject: 149999 Economics not elsewhere classified
subject: FOS: Economics and business

description: This thesis explores the equity mutual fund industry in Saudi Arabia by investigating the impacts of several variables on fund performance and money flow. The study includes all equity funds that operate in the Saudi Arabian market from the beginning of 2006 until July of 2017, which is the longest period of study has been examined the Saudi mutual fund industry. An extensive list of variables is applied in the empirical work to explore the performance and flow motives. We first investigate the impact of the oil market volatility and other fund investment characteristics on the mutual fund performance. The relationship between return performance and the oil volatility is extended to be examined based on funds investment geographic location focus and funds Shariah compliance. In addition, fund managers skills are investigated to find whether they can gain abnormal returns based on the oil market conditions. Second, we examine the main motives of mutual funds flow in the Saudi Arabian market which helps to understand the behaviour of funds investors. Different factors are applied to provide a conclusion of the determinates of the money flow sensitivity in Saudi Arabian mutual fund market. The oil market volatility is one important variable that is included in this study to examine the investors reactions to the oil market condition. Finally, we investigate whether the distribution channels play a significant role in influencing the performance and money flow of the mutual fund industry. There are only two channels that provide funds shares in the Saudi Arabian market: (bank-managed funds and financial institution-managed funds).
title: Expression of recombinant snake venom metalloproteinases in Escherichia coli for antivenom production.
Creators: name: Jane. Affleck, Louise
Publisher: name: University of Liverpool Repository
Year: 2023

description: Snake Venom Metalloproteinases (SVMPs)/haemorrhagins are members of the adamalysin superfamily of large, multi-domain zinc-dependent metalloproteinases. In addition to being the main lethal component of crotaline and viperine venoms, the haemorrhagins are also a major antigenic component, promoting them as suitable antigens for antivenom production. A recombinant approach using Escherichia coli as the heterologous host was taken to produce proteins for antivenom production utilising the putative haemorrhagin EchI cDNA clone isolated from Echis pyramidum leakeyi (Epl) venom mRNA (Paine et al. 1994) as a template. EchI is 2062 bp in length, encodes an Open Reading Frame (ORF) of 617 amino acids and a mature protein predicted to be 46 kDa. Despite using two prokaryotic expression vectors and several E. coli expression strains, expression of the full-length, the ORF, the mature protein and the metalloproteinase domain failed. The metalloproteinase domain was found to be toxic to Ecoli which provided an explanation for the lack of expression of the metalloproteinase domain-containing constructs as discussed. However, expression of Echi-C (the disintegrin-like and cysteine rich domain) was achieved only in the pET32/AD494(DE3)pLysS vector host combination, albeit as insoluble Inclusion Bodies (IBs) containing unstable recombinant proteins. To overcome the toxicity of the metalloproteinase domain, expression of "truncated peptide", sequential, overlapping, approximately 100 amino acid regions derived from the EchI ORF was attempted using a pET32/AD494(DE3)pLysS combination. The N-terminal region of the metalloproteinase domain encoded by Pep 3 was shown to be a major toxic element of Echl to E. coli. IPTG induction of Peps, 4,5 and 6 resulted in insoluble, partially folded recombinant proteins. Preliminary analysis showed them to be inactive and possible reasons for the lack of bioactivity are discussed. Mice immunised with Peps 4,5 and 6 (individually and a cocktail mixture) produced antibodies reactive with whole Epl venom and native EchII (ELISA and immunoblot) and showed partial protection against the lethal effects of whole Epl venom in mice
A Review of Theory and Practice in Scientometrics
Creators: name: Mingers, John
name: Leydesdorff, Loet
Publisher: name: arXiv
Year: 2015
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Scientometrics is the study of the quantitative aspects of the process of science as a communication system. It is centrally, but not only, concerned with the analysis of citations in the academic literature. In recent years it has come to play a major role in the measurement and evaluation of research performance. In this review we consider: the historical development of scientometrics, sources of citation data, citation metrics and the "laws" of scientometrics, normalisation, journal impact factors and other journal metrics, visualising and mapping science, evaluation and policy, and future developments.
description: accepted for publication in the European Journal of Operational Research