cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-contact, real-time eye blink detection with capacitive sensing
Creators: name: Liu, Mengxi
name: Bian, Sizhen
name: Lukowicz, Paul
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This work described a novel non-contact, wearable, real-time eye blink detection solution based on capacitive sensing technology. A low-cost and low-power consumption capacitive sensing prototype was developed and deployed on a pair of standard glasses with a copper electrode attached to the glass frame. The eye blink action will cause the capacitance variation between the electrode and the eyelid. Thus by monitoring the capacitance variation caused oscillating frequency shift signal, the eye blink can be abstracted by a simple comparison of the raw frequency signal with a customized threshold. The feasibility and robustness of the proposed solution were demonstrated in five scenarios performed by eight volunteers with an average precision of 92\% and recall of 94\%.
description: 4 pages, 5 figures
title: Institutionalizing Gender and Sexuality in a Call-In Radio Advice Program: A Characterization of Loveline
Creators: name: Storey, Meagan P.
Publisher: name: Old Dominion University Libraries
Year: 2004

description: Previous studies of advice characterized it as a discourse in which authority is afforded to the giver by virtue of being asked for advice. As an authoritative discourse, advice sets the standards by which interlocutors base their judgments of normalcy. The consequences of these judgments are multiplied when advice is given as part of public, institutional talk, such as with radio call-in programs. This thesis examines how the authoritative discourse of global advice (public, commercial advice) is used to construct and normalize human experiences, specifically gender and sexuality. This study is based on an analysis of ten audio-taped episodes, each two hours in length, of the radio call-in program Loveline. In addition to examining the linguistic features of global advice that identify it as norm-enforcing, such as generalized references, axiom markers and metaphor, this thesis examines how the environment of institutional talk and the medium of radio strengthen the normative aspect of global advice. In doing so, the text under analysis is characterized (Chapter II) with attention to other texts that inform it, such as doctor-patient interaction and therapeutic texts. After providing this characterization, the data are examined to illustrate the ideologies constructed and enforced in the program. By quantifying the topic selections of caller to the program, the data in Chapter III show that the topics important to women are other-oriented while those important to men are self-oriented because women and men attend to different texts in the program. Chapter IV examines the most prevalent ideologies normalized by the hosts. Masculinity is defined by the following desires, identities, and practices: men desire sex all the time; men who have sex are successful in all other areas of life and have nothing to complain about; men masturbate frequently. Femininity is primarily defined in contrast (subjugation) to masculinity. Women are treated as objects of masculine desire and practices, and this often leads to their identities as victims. The analyses indicate that what would seem to be a helpful linguistic environment is actually an arena for judgment and norm-enforcing.
Occupational Prestige Study 3b
Creators: name: Hughes, Bradley
name: Condon, David
name: Srivastava, Sanjay
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social Psychology
subject: Psychology
subject: FOS: Psychology
subject: Industrial and Organizational Psychology
subject: Social and Behavioral Sciences
subject: individual differences
subject: measurement
subject: occupational prestige
subject: social status
subject: socioeconomic status
subject: status

description: This preregistration is for Study 3b in which we calculate the correlations between individual SES indicators.
Boosting Unsupervised Machine Translation with Pseudo-Parallel Data
Creators: name: Kvapilíková, Ivana
name: Bojar, Ondřej
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Even with the latest developments in deep learning and large-scale language modeling, the task of machine translation (MT) of low-resource languages remains a challenge. Neural MT systems can be trained in an unsupervised way without any translation resources but the quality lags behind, especially in truly low-resource conditions. We propose a training strategy that relies on pseudo-parallel sentence pairs mined from monolingual corpora in addition to synthetic sentence pairs back-translated from monolingual corpora. We experiment with different training schedules and reach an improvement of up to 14.5 BLEU points (English to Ukrainian) over a baseline trained on back-translated data only.
description: MT Summit 2023
Do the associations between low status groups and oppression decrease the validity of the IAT as an indirect measure of prejudice? - Study 5
Creators: name: Shechter, Anat
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Social Psychology
subject: Social and Behavioral Sciences

description: In the present study we examine the possibility that the correlation between the privilege/oppressed IAT and the standard race IAT stems from recoding of the privilege/oppressed to good/bad. This study provides improvements to Study 4, which examined the same question.
Near-infrared and visible-light periocular recognition with Gabor features using frequency-adaptive automatic eye detection
Creators: name: Alonso-Fernandez, Fernando
name: Bigun, Josef
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Periocular recognition has gained attention recently due to demands of increased robustness of face or iris in less controlled scenarios. We present a new system for eye detection based on complex symmetry filters, which has the advantage of not needing training. Also, separability of the filters allows faster detection via one-dimensional convolutions. This system is used as input to a periocular algorithm based on retinotopic sampling grids and Gabor spectrum decomposition. The evaluation framework is composed of six databases acquired both with near-infrared and visible sensors. The experimental setup is complemented with four iris matchers, used for fusion experiments. The eye detection system presented shows very high accuracy with near-infrared data, and a reasonable good accuracy with one visible database. Regarding the periocular system, it exhibits great robustness to small errors in locating the eye centre, as well as to scale changes of the input image. The density of the sampling grid can also be reduced without sacrificing accuracy. Lastly, despite the poorer performance of the iris matchers with visible data, fusion with the periocular system can provide an improvement of more than 20%. The six databases used have been manually annotated, with the annotation made publicly available.
description: Published at IET Biometrics
incidental VAAST (word-nonword)
Creators: name: Degner, Juliane
name: Reichardt, Regina
name: Rougier, Marine
name: Muller, Dominique
name: Ric, Francois
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Social and Behavioral Sciences

description: The purpose of the present study is to investigate whether and to what extent behavioral effects in an approach-avoidance measure (the Visual Approach/Avoidance by the Self Task; VAAST; Rougier et al., 2018) are related to valence and relevance of stimulus words. We employ a version of the VAAST in which valence is not task relevant (i.e., incidental VAAST) and implement an orthogonal manipulation of stimulus valence (positive vs. negative) by relevance (self- vs- other-profitability; cf. Peeters, 1983; Peeters & Czapinski, 1990; Wentura & Degner, 2011) using person descriptive trait adjectives as stimuli. We expect to observe valence-movement compatibility effects to be moderated by stimulus relevance.
Laser absorption spectroscopy studies to characterize Cs oven performances for the negative ion source SPIDER
Creators: name: Barbisan, M.
name: Cristofaro, S.
name: Zampieri, L.
name: Pasqualotto, R.
name: Rizzolo, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The SPIDER H-/D- ion source is currently in operation in the Neutral Beam Test facility (NBTF) at Consorzio RFX (Padova, Italy) to prove the possibility of generating up to 40 A of negative ions, with a maximum extracted current density of 350 A/m2 (H)/285 A/m2 (D) and a fraction of co-extracted electrons not greater than 0.5 (H)/1 (D). These performances are required for the realization of the ITER Neutral Beam Injector (NBI), which should deliver 16.7 MW to the plasma by means of negative ions accelerated up to 1 MeV and neutralized before being injected into the ITER tokamak. In order to obtain such high extracted current densities and low co-extracted electron fractions it is necessary to lower the work function of the surface of the acceleration system grid facing the source; this will be accomplished by coating the surfaces with Cs, routinely evaporated by three ovens. The functionality of the ovens has been tested at the CAesium oven Test Stand (CATS), hosted at NBTF. The test stand is equipped with several diagnostics, among which a Laser Absorption Spectroscopy (LAS) diagnostic. Using a tunable laser diode, the LAS diagnostic gets the high resolution absorption spectrum of the Cs 852 nm D2 line along a line of sight to measure Cs density at ground state. The paper describes the test stand and the LAS diagnostic, together with the characterization of the ovens to be installed in SPIDER. The paper will also study the systematic density underestimation effect caused by Cs ground state depopulation, as a function of laser intensity and of Cs density, in the perspective of correcting the density evaluation.
description: 8 pages, 4 figures. Contribution to the LAPD 2019 conference. Accepted manuscript of a published paper (embargo expired)
Effect of PSPS on attitudes and beliefs
Creators: name: McKanna, K.C.
name: Wong-Parodi, Gabrielle
name: Azevedo, Inês
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: This project will estimate the impact of public safety power shutoff events in California on trust in the utility and support for future events using survey data.
Signatures of Cloud, Temperature, and Gravity From Spectra of the Closest Brown Dwarfs
Creators: name: Faherty, Jacqueline K.
name: Beletsky, Yuri
name: Burgasser, Adam J.
name: Tinney, Chris
name: Osip, David J.
name: Filippazzo, Joseph C.
name: Simcoe, Robert A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present medium resolution optical and NIR spectral data for components of the newly discovered WISE J104915.57-531906.1AB (Luhman 16AB) brown dwarf binary. The optical spectra reveal strong 6708 A Li I absorption in both Luhman 16A (8.0+/-0.4 A) and Luhman 16B (3.8+/-0.4 A). Interestingly, this is the first detection of Li I absorption in a T dwarf. Combined with the lack of surface gravity features, the Li I detection constrains the system age to 0.1 - 3 Gyr. In the NIR data, we find strong KI absorption at 1.168, 1.177, 1.243, and 1.254 μm in both components. Compared to the strength of KI line absorption in equivalent spectral subtype brown dwarfs, Luhman 16A is weaker while Luhman 16B is stronger. Analyzing the spectral region around each doublet in distance scaled flux units and comparing the two sources, we confirm the J band flux reversal and find that Luhman 16B has a brighter continuum in the 1.17 μm and 1.25 μm regions than Luhman 16A. Converting flux units to a brightness temperature we interpret this to mean that the secondary is ~ 50 K warmer than the primary in regions dominated by condensate grain scattering. One plausible explanation for this difference is that Luhman 16B has thinner clouds or patchy holes in its atmosphere allowing us to see to deeper, hotter regions. We also detect comparably strong FeH in the 0.9896 μm Wing-Ford band for both components. Traditionally, a signpost of changing atmosphere conditions from late-type L to early T dwarfs, the persistence and similarity of FeH at 0.9896 μm in both Luhman 16A and Luhman 16B is an indication of homogenous atmosphere conditions. We calculate bolometric luminosities from observed data supplemented with best fit models for longer wavelengths and find the components are consistent within 1σ with resultant Teffs of 1310+/-30 K and 1280+/-75 K for Luhman 16AB respectively.
description: 17 pages, 11 figures, 4 tables. Submitted to ApJ and revised after referee report
The Structure of the DCFR – Which Approach for Today's Contract Law?
Creators: name: Grundmann, Stefan
Publisher: name: Humboldt-Universität zu Berlin
Year: 2008
Subjects: subject: 340 Recht

description: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
description: This paper discusses the DCFR as a potential model for a European Code because core members of the study group see it as this. The paper discusses, first, the overall structure and does so in two respects: It asks the question whether one should really aim at a big Code – including all obligations and large parts of property law – and argues that one should rather concentrate on a modern and convincing Contract Law Code, given that contract law is very complex today and there are not really many common problems with other obligations anyhow; the content and structure of contract law has reduced quality in the DCFR as a result of its combination with other obligations. Moreover, this paper asks the question whether all types of contract partners should be included and argues that the DCFR is right in doing so, but that it does not really reflect modern theory on where markets fail and therefore does not convincingly find the reasons where and why to differentiate in the substantive law solutions. In the two other sections two core phenomena of modern contract law are discussed: information and formation of contracts and service contracts and networks in today's service society. These are discussed with a view to see how intensively their peculiarities have indeed influenced the structure of the DCFR. Little such influence can be detected. These examples also show how well founded is the criticism that much too often general clauses are chosen instead of finding concrete solutions.
Completing the puzzle: Bridging the gaps by building a resilient future through science missions for sustainability
Creators: name: Policy Labs, Frontiers
Publisher: name: Frontiers
Year: 2024
Subjects: Climate Change Processes
Ecological Impacts of Climate Change

description:  
Sandrine Dixson-Declève rightly denounces the slowness of the pace of work and the deliberations of the COP process in face of the climate crisis. She also says, again rightly so, that the science of climate change is clear, hence the sluggishness of the decision-making process on climate change appears particularly striking. I am paraphrasing Dixson-Declève’s piece, but I think I have it right: we need to act yesterday, we know enough and the current process is not fit for the outcomes we need. If my reading of her piece is correct, I fully endorse her plea for a decision-making process that does justice to the urgent and determined action we must take: reversing the course of adverse changes in our life-supporting climate system.

For the Fulle Context Please Click Here
Patient Reported Outcome Measures (PROMs) of treatment burden in multimorbidity: a scoping review protocol
Creators: name: Mendoza-Quispe, Daniel
name: Perez-Leon, Silvana
name: Bazo-Alvarez, Juan
name: Miranda, J. Jaime
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Nutritional and Metabolic Diseases
subject: Public Health
subject: Epidemiology
subject: Cardiovascular Diseases
subject: Diseases
subject: International Public Health
subject: Medicine and Health Sciences
subject: Multimorbidity
subject: PROM
subject: Protocol
subject: Scoping review
subject: Treatment burden

description: This archive contains the first version (February 2021) of the study protocol entitled: "Patient Reported Outcome Measures (PROMs) of treatment burden in multimorbidity".
Information-Theoretic Foundations of DNA Data Storage
Creators: name: Shomorony, Ilan
name: Heckel, Reinhard
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Due to its longevity and enormous information density, DNA is an attractive medium for archival data storage. Thanks to rapid technological advances, DNA storage is becoming practically feasible, as demonstrated by a number of experimental storage systems, making it a promising solution for our society's increasing need of data storage. While in living things, DNA molecules can consist of millions of nucleotides, due to technological constraints, in practice, data is stored on many short DNA molecules, which are preserved in a DNA pool and cannot be spatially ordered. Moreover, imperfections in sequencing, synthesis, and handling, as well as DNA decay during storage, introduce random noise into the system, making the task of reliably storing and retrieving information in DNA challenging. This unique setup raises a natural information-theoretic question: how much information can be reliably stored on and reconstructed from millions of short noisy sequences? The goal of this monograph is to address this question by discussing the fundamental limits of storing information on DNA. Motivated by current technological constraints on DNA synthesis and sequencing, we propose a probabilistic channel model that captures three key distinctive aspects of the DNA storage systems: (1) the data is written onto many short DNA molecules that are stored in an unordered fashion; (2) the molecules are corrupted by noise and (3) the data is read by randomly sampling from the DNA pool. Our goal is to investigate the impact of each of these key aspects on the capacity of the DNA storage system. Rather than focusing on coding-theoretic considerations and computationally efficient encoding and decoding, we aim to build an information-theoretic foundation for the analysis of these channels, developing tools for achievability and converse arguments.
description: Preprint of a monograph published in Foundations and Trends in Communications and Information Theory
An Economic Impacts of the FTA’s on Korean Dairy Industry
Creators: name: Jeon, Sanggon
name: Jeon, Sanggon
Publisher: name: Unknown
Year: 2017
Subjects: subject: Industrial Organization
subject: International Relations/Trade
subject: dairy and milk processing industry
subject: tariff reduction
subject: simulation equilibrium displacement model

description: Free Trade Agreements (FTAs) are one of the important controversies in the Korean dairy and milk processing industry. This study estimates the economic impacts of tariff reductions in FTAs using a simulation equilibrium displacement model. For this, we incorporate various tariff schedules under different FTAs into one weighted tariff schedule for 14 different dairy products respectively. We perform a comparative static analysis comparing the year of 2010 (pre-FTAs) and the following years until 2015. To do a research, we collect much information about market variables, parameter values, and estimate demand-supply elasticities. Furthermore, we perform a sensitivity analysis. Based on the predetermined simulated tariff schedules under major FTAs, this study finds that the benefit of food processing industries including milk processing firms is almost 358~366 billion won per year or 5,369~5,489 billion won for 15 years. Also, the direct damage of domestic dairy farms is 4.2 billion won per year or 63.6 billion won for 15 years. The changes of milk selling income show that this damage has emerged since 2016.
Transport Properties and Diamagnetism of Dirac Electrons in Bismuth
Creators: name: Fuseya, Yuki
name: Ogata, Masao
name: Fukuyama, Hidetoshi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Bismuth crystal is known for its remarkable properties resulting from particular electronic states, e. g., the Shubnikov-de Haas effect and the de Haas-van Alphen effect. Above all, the large diamagnetism of bismuth had been a long-standing puzzle soon after the establishment of quantum mechanics, which had been resolved eventually in 1970 based on the effective Hamiltonian derived by Wolff as due to the interband effects of a magnetic field in the presence of a large spin-orbit interaction. This Hamiltonian is essentially the same as the Dirac Hamiltonian, but with spatial anisotropy and an effective velocity much smaller than the light velocity. This paper reviews recent progress in the theoretical understanding of transport and optical properties, such as the weak-field Hall effect together with the spin Hall effect, and ac conductivity, of a system described by the Wolff Hamiltonian and its isotropic version with a special interest of exploring possible relationship with orbital magnetism. It is shown that there exist a fundamental relationship between spin Hall conductivity and orbital susceptibility in the insulating state on one hand, and the possibility of fully spin-polarized electric current in magneto-optics. Experimental tests of these interesting features have been proposed.
description: 22 pages, 23 figures, submitted to J. Phys. Soc. Jpn
Climate justice and adaptive capacities in Sub-Saharan Africa
Creators: name: Mugambiwa, Shingirai Stanley
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 410103
subject: Human impacts of climate change and human adaptation

description: Sub-Saharan Africa is at an increased danger of climate change because of its meteorological composition as well as the underdevelopment of many of its countries. Many African nations do not have the resources and the infrastructure necessary to lessen the consequences of climate change, let alone adjust to the impacts of climate change. As such, most of the countries have low adaptive capacities, coupled with lack of economic, governance, and social readiness needed for adaptation and there is a dearth of literature on the role of climate justice in enhancing adaptive capacities. It is therefore essential to frame the issue of climate change within the broader context of justice and equality in pursuit of sustainable development in the region. The aim of this paper was to assess the role of climate justice in strengthening adaptive capacities in sub-Saharan Africa. The study found that adaptive capacity is influenced by a wide variety of factors such as availability of economic and natural resources, social networks, institutions, governance, and technology. As such, justice is important in determining who has and who does not have adaptive capacity. The paper also found that the financial muscle of climate adaptation is a component of justice because it determines who gets what, when and how.
Policy support for organic farming in the European Union 2010-2020
Creators: name: Lampkin, Nicolas
name: Sanders, Jürn
name: Lampkin, Nicolas
name: Sanders, Jürn
Publisher: name: Unknown
Year: 2022
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Political Economy
subject: organic
subject: agriculture
subject: conversion
subject: maintenance
subject: agri-environment
subject: policy
subject: action plan
subject: European Union

description: Since 1994, and in some individual cases earlier, the European Union (EU) and its Member States have provided financial support to organic farming and food businesses, primarily through the agri-environmental and other rural development measures of the 2nd Pillar of the Common Agricultural Policy (CAP). This report builds on a series of similar earlier reports and updates the policy support data and descriptions for the decade 2010-2020, covering the two CAP programming periods 2007-2013 (represented by 2011 data) and, in more detail, the 2014- 2020 period. A major focus is the support for conversion to and continuation (maintenance) of organic farming, implemented in all but one of the EU Member States. Comprehensive data has been compiled on payment rates, supported activities, eligibility conditions, uptake and public expenditure for these measures. In 2018, the then EU28 Member States supported organic farming on almost 5% of EU utilisable agricultural area (UAA), at an average cost of €207 per ha UAA, totalling over 1.8 billion €. The area supported represented 64% of the total certified organic land area in the EU. Support was also provided in various forms for training, advice, education, research, investments in farms and processing activities, consumer promotion and the development and implementation of EU regulations defining organic food and farming. In many countries, organic action plans have been implemented to enable better integration of these policy measures to meet defined national or regional needs, priorities and targets. As part of its Farm to Fork and Biodiversity Strategies from 2020, the EU has set a target of 25% of UAA to be organic by 2030, with the expectation of enhanced policy support in the 2023-2027 CAP programming period and beyond.
description: DOI:10.3220/WP1663067402000
Quantum chemical insights into hexaboride electronic structures: correlations within the boron $p$-orbital subsystem
Creators: name: Petersen, Thorben
name: Rößler, Ulrich K.
name: Hozoi, Liviu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The notion of strong electronic correlations arose in the context of $d$-metal oxides such as NiO but can be exemplified on systems as simple as the H$_2$ molecule. Here we shed light on correlation effects on B$_6^{2-}$ clusters as found in $M$B$_6$ hexaborides and show that the B 2$p$ valence electrons are fairly correlated. B$_6$-octahedron excitation energies computed for CaB$_6$ and YbB$_6$ agree with peak positions found by resonant inelastic x-ray scattering, providing a compelling picture for the latter. Our findings characterize these materials as very peculiar $p$-electron correlated systems and call for more involved many-body investigations within the whole hexaboride family, both alkaline- and rare-earth compounds, not only for $N$- but also ($N\pm1$)-states defining e. g. band gaps.
description: 7 pages, 3 figures
La dimensione estetica della politica. Jacques Rancière la democrazia senza parte
Creators: name: Villani, Massimo
Publisher: name: Universita degli studi di Salerno
Year: 2018
Subjects: subject: SPS/01 FILOSOFIA POLITICA
subject: Ranciere
subject: Estetica
subject: Democrazia

description: 2016 - 2017
description: The starting point of the research is the assumption that actuality in not intelligible in a rational or moral perspective. The vanishing of every cognitive, moral or legal transcendence gives space to a reality that is complex and lacks systematic nature. Disarticulation and incoherence are the main character of an age in which individualism is maximally developed. The government of this differential complexity does not work through a transcendence reducing the whole to uniformity. Different and also antithetic paradigms coexist. The sovereign and state model has lost its centrality (both as political and economic subject), but it is not completely vanished. Forms of local governances, bottom-up insurgences, melt with demagogies, populisms and yearnings for providential forms of State. All this tells us about a time of ‘crisis’, that is a crack between an ancient which is not vanished yet, and a new which is not arrived yet. However in this research there is no space for a semantic of the crisis: the long fragmentation of philosophical and political traditional rationality – the one who searched for a synthesis of the multiplex – is analysed to understand what emerges from this new configuration. I have called ‘anarchic’ this configuration, but without referring to the dramaturgy of a lost arché: in this research ‘anarchy’ is the absence of any principle, an absence from which emerges what first was submissive and deactivated... [edited by Author]
On the dilemma between percolation processes and fluctuating pairs as the origin of the enhanced conductivity above the superconducting transition in cuprates
Creators: name: Llovo, I. F.
name: Mosqueira, J.
name: Vidal, F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The confrontation between percolation processes and superconducting fluctuations to account for the observed enhanced in-plane electrical conductivity above but near $T_c$ in cuprates is revisited. The cuprates studied here, La$_{1.85}$Sr$_{0.15}$CuO$_4$, Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$, and Tl$_2$Ba$_2$Ca$_2$Cu$_3$O$_{10}$, have a different number of superconducting CuO$_2$ layers per unit-cell length and different Josephson coupling between them, and are optimally-doped to minimize $T_c$-inhomogeneities. The excellent chemical and structural quality of these samples also contribute to minimize the effect of extrinsic $T_c$-inhomogeneities, a crucial aspect when analyzing the possible presence of intrinsic percolative processes. Our analyses also cover the so-called high reduced-temperature region, up to the resistivity rounding onset $\varepsilon_{onset}$. By using the simplest form of the effective-medium theory, we show that possible emergent percolation processes alone cannot account for the measured enhanced conductivity. In contrast, these measurements can be quantitatively explained using the Gaussian-Ginzburg-Landau (GGL) approach for the effect of superconducting fluctuations in layered superconductors, extended to $\varepsilon_{onset}$ by including a total energy cutoff, which takes into account the limits imposed by the Heisenberg uncertainty principle to the shrinkage of the superconducting wavefunction. Our analysis confirms the adequacy of this cutoff, and that the effective periodicity length is controlled by the relative Josephson coupling between superconducting layers. These conclusions are reinforced by analyzing one of the recent works that allegedly discards the superconducting fluctuations scenario while supporting a percolative scenario for the enhanced conductivity above $T_c$ in cuprates.
description: 13 pages, 7 figures
Climate governance beyond the government: Indigenous knowledge systems in rural Zimbabwe's climate change adaptation
Creators: name: Tirivangasi, Happy
name: Mugambiwa, Shingirai Stanley
name: Agnes Rankoana, Sejabaledi
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 410102
subject: Ecological impacts of climate change and ecological adaptation
classificationCode: 410103
subject: Human impacts of climate change and human adaptation
classificationCode: 410199
subject: Climate change impacts and adaptation not elsewhere classified

description: This paper assesses climate governance beyond the government, that is, climate governance alternatives that exist outside the context of government policy frameworks in rural Zimbabwe. Indigenous Knowledge Systems (IKS) are one of the alternatives available. Each community in developed, developing, and underdeveloped nations have their own indigenous knowledge systems because IKS are context specific. This encourages the effort to comprehend what indigenous knowledge systems are, and what they signify, on a fundamental level. Environmental disasters have always been a fact of life for African communities and smallholder farmers. Farmers are equipped with the knowledge necessary for coping with climate-related environmental shock and stress as a result of these encounters. The development of a comprehensive national response to climate change requires this information, according to several academic sources. Indigenous knowledge is a solid foundation and premise for climate change adaptation since indigenous people are well-versed in actual and potential solutions. Many scholars agree that few efforts have been made to incorporate IKS into formal climate change adaptation measures in terms of climate governance; therefore, it is necessary to incorporate IKS into the government policy framework on climate change.
title: BSS Transposition in the Medical Sector
Creators: name: Evans, Stephen
Publisher: name: ESR EuroSafe Imaging
Year: 2018
Subjects: subject: Health policy and practice
subject: CT
subject: Radioprotection / Radiation dose
subject: Professional issues
subject: Management
subject: Action 13 - Stakeholder engagement and collaboration
subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Action 12 - Cooperation with international radiation protection initiatives and other stakeholders including IAEA, WHO, ICRP, HERCA, European Commission
subject: Action 10 - Improved communication and collaboration of health professionals in radiation protection
subject: Action 3 - Optimisation, diagnostic reference levels, image quality
subject: Radiation safety
subject: Quality assurance
subject: Workforce

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: The new Basic Safety Standards (BSS) Directive (Council Directive 2013/59/Euratom) came into force on February 6, 2018. It modernises European radiation protection legislation by taking account of the latest scientific knowledge, technological...
De-Confusing blended field images using graphs and bayesian priors
Creators: name: Safarzadeh, Mohammadtaher
name: Ferguson, Henry C.
name: Lu, Yu
name: Inami, Hanae
name: Somerville, Rachel S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new technique for overcoming confusion noise in deep far-infrared \Herschel space telescope images making use of prior information from shorter $λ<2$\micron wavelengths. For the deepest images obtained by \Herschels, the flux limit due to source confusion is about a factor of three brighter than the flux limit due to instrumental noise and (smooth) sky background. We have investigated the possibility of de-confusing simulated \Herschel PACS-160\micron images by using strong Bayesian priors on the positions and weak priors on the flux of sources. We find the blended sources and group them together and simultaneously fit their fluxes. We derive the posterior probability distribution function of fluxes subject to these priors through Monte Carlo Markov Chain (MCMC) sampling by fitting the image. Assuming we can predict FIR flux of sources based on ultraviolet-optical part of their SEDs to within an order of magnitude, the simulations show that we can obtain reliable fluxes and uncertainties at least a factor of three fainter than the confusion noise limit of $3σ_{c} $=2.7 mJy in our simulated PACS-160 image. This technique could in principle be used to mitigate the effects of source confusion in any situation where one has prior information of positions and plausible fluxes of blended sources. For \Herschel, application of this technique will improve our ability to constrain the dust content in normal galaxies at high redshift.
Diseño de circuitos digitales con VHDL y FPGA. Circuitos combinacionales: Decodificadores
Creators: name: Machado, Felipe
Publisher: name: Zenodo
Year: 2023
Subjects: VHDL
FPGA

description: Presentación de clase sobre cómo describir un decodificador en VHDL para su implementación en FPGA. Por ahora no hay video de esta presentación, pero están los videos de los multiplexores, que es similar: Multiplexor parte 1: https://youtu.be/CQdw-M1ooTI Multiplexor parte 2: https://youtu.be/or_vwCTSY8M Sin embargo, hay videos del decodificador para diseñarlo en puertas lógicas: Decodificador de 2 a 4: https://youtu.be/OI_f3MdsHjM Decodificador de 3 a 8: https://youtu.be/IyYyuDfyXWs
description: {"references": ["F. Machado, S. Borromeo, \"Dise\u00f1o de circuitos digitales con VHDL\", 2010"]}
title: Clinical Diagnostic Reference Levels for Europe
Creators: name: Damilakis, John
Publisher: name: ESR EuroSafe Imaging
Year: 2018
Subjects: subject: Radiation safety
subject: Fluoroscopy
subject: CT
subject: Radioprotection / Radiation dose
subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Action 3 - Optimisation, diagnostic reference levels, image quality
subject: Quality assurance

description: Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information References
description: Background/introduction: Different image qualities are needed for different clinical indications of the same anatomical area. A kidney stone evaluation, for example, can be performed using a lower radiation dose than it would be required for an evaluation of...
Hierarchical Variability Modeling for Software Architectures
Creators: name: Haber, Arne
name: Renel, Holger
name: Rumpe, Bernhard
name: Schaefer, Ina
name: van der Linden, Frank
Publisher: name: arXiv
Year: 2014
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Hierarchically decomposed component-based system development reduces design complexity by supporting distribution of work and component reuse. For product line development, the variability of the components to be deployed in different products has to be represented by appropriate means. In this paper, we propose hierarchical variability modeling which allows specifying component variability integrated with the component hierarchy and locally to the components. Components can contain variation points determining where components may vary. Associated variants define how this variability can be realized in different component configurations. We present a meta model for hierarchical variability modeling to formalize the conceptual ideas. In order to obtain an implementation of the proposed approach together with tool support, we extend the existing architectural description language MontiArc with hierarchical variability modeling. We illustrate the presented approach using an example from the automotive systems domain.
description: 10 pages, 9 figures. Proceedings of International Software Product Lines Conference (SPLC 2011), IEEE Computer Society, August 2011
Mean-square approximation for stochastic differential equations with small noises
Creators: name: Milstein, Grigori N.
name: Tret´Yakov, Michael V.
Publisher: name: Weierstrass Institute
Year: 1994
Subjects: subject: Stochastic differential equations
subject: small noises
subject: numerical methods
subject: 60H10

description: New approach to construction of mean-square numerical methods for solution of stochastic differential equations with small noises is proposed. The approach is based on expanding of the exact solution of the system with small noises by powers of time increment and regrouping of expansion terms according to powers of time increment and small parameter. The theorem on mean-square estimate of method errors is proved. Various efficient numerical schemes are derived for a general system with small noises and for systems with small additive and small colored noises. The proposed methods are tested by calculation of Lyapunov exponents and simulation of a laser Langevin equation with multiplicative noises.
Carbon-based nanomaterials
Creators: name: Maggio, Mario
Publisher: name: Universita degli studi di Salerno
Year: 2017
Subjects: subject: CHIM/03 CHIMICA GENERALE E INORGANICA

description: 2014 - 2015
description: New layered carbon-based materials were prepared and exhaustively characterized exploiting different characterization techniques, such as thermogravimetry (TGA), differential thermal calorimetry (DSC), Fourier transform infrared (FTIR) and wide angle X-ray diffraction (WAXD). Pristine graphite (G) with high surface area and carbon black (CB) samples with different surface areas were selected as starting materials to prepare the corresponding oxidized samples, i.e. graphite oxide (GO) and carbon black oxide (oCB), with the Hummers’ method. Thanks to the strong hydrophilicity and to the lamellar structure of oxidized carbon-based materials, a rich intercalation chemistry is permitted. In fact, after treatments of GO and oCB by strong basis, ordered intercalation compounds have been obtained, not only if the starting material is crystalline like graphite oxide, but also if it is completely amorphous like oxidized carbon black. Starting basified GO, free-standing papers can be obtained by vacuum filtration, as well as by casting procedure, of colloidal dispersions of graphene oxide sheets. The use of basified GO leads to more flexible, solvent resistant and thermally stable GO papers. Spectroscopic analyses of the obtained papers have been conducted aiming to a possible rationalization of the observed behavior. [edited by Author]
description: Per questo lavoro di tesi di dottorato, sono stati preparati nuovi nanomateriali basti su carbonio ed esaustivamente caratterizzati con tecniche quali termogravimetria (TGA), calorimetria a scansione differenziale (DSC), spettroscopia infrarossa (FT-IR) e diffrazione dei razzi X (WAXD). I materiali di partenza utilizzati per questo lavoro di tesi, sono stati la grafite ad alta area superficiale e carbon black con differenti valori di area superficiale, al fine di ottenere i corrispondenti materiali ossidati quali ossido di grafite (GO) e carbon black ossidato (oCB). Il metodo utilizzato per le ossidazioni dei suddetti starting materials è quello di Hummers. Grazie alla forte idrofilicità ed alla struttura lamellare posseduta dai materiali carboniosi ossidati, è possibile ottenere svariati composti di intercalazione trattando il GO (cristallino) e l’oCB(amorfo) con basi forti e con conseguente funzionalizzazione ionica con cationi di natura organica. Inoltre, partendo da dispersioni di GO basificato, sono stati ottenuti fogli di ossido di grafite e di grafene mediante filtrazione e/o per lenta evaporazione del solvente. Utilizzando una base nella procedura di ottenimento dei cosiddetti fogli di ossido di grafite/grafene, sono stati preparati campioni free-standing con elevata flessibilità, resistenza ai solventi e alle alte temperature. [a cura dell'Autore]
On convergence rates of suprema in the presence of non-negligible trends
Creators: name: Konakov, Valentin
Publisher: name: Weierstrass Institute
Year: 1994
Subjects: subject: Kernel estimation
subject: smoothing parameter
subject: Gaussian fields
subject: Laplace type integral
subject: Leray-Gel'fand differential form
subject: 62G07
subject: 62G20
subject: 62M40

description: We investigate the convergence rates for the maximal deviation distribution of kernel estimates from the true density. The convergence rates for related Gaussian fields are also investigated. We consider the optimal choice of the smoothing parameter in the sense of Konakov and Piterbarg (1994) and in doing so we take into account a non-negligible trend. It is shown that the convergence rates depend on the asymptotic behaviour of the Laplace type integrals over a small neighbourhood of the manifold of points at which the trend attains its maximal value. Using integration over the level sets (Leray-Gel'fand differential forms) it is proved that the convergence rates are tipically logarithmically slow, even if the rates are to be uniform over as few as three points. Some improved approximations with power rates of convergence are also obtained.
On a Penrose-Fife Model with Zero Interfacial Energy Leading to a Phase-field System of Relaxed Stefan Type
Creators: name: Colli, Pierluigi
name: Sprekels, Jürgen
Publisher: name: Weierstrass Institute
Year: 1994
Subjects: subject: Stefan problems
subject: phase transitions
subject: phase-fieldmodels
subject: singular parabolic systems.
subject: 35R35
subject: 35K50
subject: 80A22

description: In this paper we study an initial-boundary value Stefan-type problem with phase relaxation where the heat flux is proportional to the gradient of the inverse absolute temperature. This problem arises naturally as limiting case of the Penrose-Fife model for diffusive phase transitions with non-conserved order parameter if the coefficient of the interfacial energy is taken as zero. It is shown that the relaxed Stefan problem admits a weak solution which is obtained as limit of solutions to the Penrose-Fife phase-field equations. For a special boundary condition involving the heat exchange with the surrounding medium, also uniqueness of the solution is proved.