cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Great Britain Ministry of Information - Daily Press Notices and Bulletins (1944-03-10)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1944
Subjects: subject: World War, 1939-1945 – Social aspects
subject: World War, 1939-1945 -- History
subject: World War II
subject: Second World War
subject: World War Two
subject: Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Nanoscale characterization of beryllide materials
Creators: name: Duerrschnabel, M.
name: Gaisin, R.
name: Vladimirov, P.
name: Rieth, M.
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023

description: The most recent version of the Helium Cooled Pebble Bed (HCPB) foreseen for the European DEMO blanket considers solid blocks of titanium beryllide as neutron multiplicator material. The advantage of beryllide materials over pure beryllium is their higher operating temperature, higher corrosion resistance, lower swelling, and retention of tritium under neutron irradiation. Understanding the micro- and nanostructure especially after neutron irradiation is of crucial importance for the qualification process of the material. The focus of this work will lie on the transmission electron microscopy (TEM) characterization of a titanium beryllide/beryllium composite material irradiated at two different temperatures during the HIDOBE neutron irradiation campaign. In particular, the structure and chemistry of the nanosized cavities in the pure beryllium region and the beryllide region was analyzed and is compared to each other. Apart from the cavities, structural defects were observed in the beryllide region that are not known from irradiated pure beryllium. The presented results can be used for understanding and quantifying for example tritium retention in beryllide materials and to further optimize the material synthesis and the breeding blanked design in general.
Enhancing Feature Tracking With Gyro Regularization
Creators: name: Poling, Bryan
name: Lerman, Gilad
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: 68T45

description: We present a deeply integrated method of exploiting low-cost gyroscopes to improve general purpose feature tracking. Most previous methods use gyroscopes to initialize and bound the search for features. In contrast, we use them to regularize the tracking energy function so that they can directly assist in the tracking of ambiguous and poor-quality features. We demonstrate that our simple technique offers significant improvements in performance over conventional template-based tracking methods, and is in fact competitive with more complex and computationally expensive state-of-the-art trackers, but at a fraction of the computational cost. Additionally, we show that the practice of initializing template-based feature trackers like KLT (Kanade-Lucas-Tomasi) using gyro-predicted optical flow offers no advantage over using a careful optical-only initialization method, suggesting that some deeper level of integration, like the method we propose, is needed in order to realize a genuine improvement in tracking performance from these inertial sensors.
description: Preprint submitted to Image and Vision Computing
title: Great Britain Ministry of Information - Daily Press Notices and Bulletins (1944-03-11)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1944
Subjects: subject: World War, 1939-1945 – Social aspects
subject: World War, 1939-1945 -- History
subject: World War II
subject: Second World War
subject: World War Two
subject: Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Studying intra-organizational dynamics in implementing supply chain partnering
Creators: name: Venselaar, Marieke
name: Gruis, Vincent
Publisher: name: A+BE | Architecture and the Built Environment
Year: 2018

description: This study aims at uncovering intra-organizational dynamics in implementing supply chain partnering. Narrative techniques are used in a qualitative case study in a Dutch housing association. This study shows how project leaders of a Dutch Housing Association perceive relationships in the internal supply chain and the strategies that they develop to cope with these relationships. Furthermore, it is argued that key values of SCP as understood by the project leaders - such as sharing responsibilities and addressing feedback towards each other openly - are not applied in intraorganizational relationships.
description: A+BE | Architecture and the Built Environment, No. 15 (2017): Work Floor Experiences of Supply Chain Partnering in the Dutch Housing Sector
Lyapunov exponents of stochastic systems---from micro to macro
Creators: name: Laffargue, Tanguy
name: Tailleur, Julien
name: van Wijland, Frédéric
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Lyapunov exponents of dynamical systems are defined from the rates of divergence of nearby trajectories. For stochastic systems, one typically assumes that these trajectories are generated under the "same noise realization". The purpose of this work is to critically examine what this expression means. For Brownian particles, we consider two natural interpretations of the noise: intrinsic to the particles or stemming from the fluctuations of the environment. We show how they lead to different distributions of the largest Lyapunov exponent as well as different fluctuating hydrodynamics for the collective density field. We discuss, both at microscopic and macroscopic levels, the limits in which these noise prescriptions become equivalent. We close this paper by providing an estimate of the largest Lyapunov exponent and of its fluctuations for interacting particles evolving with the Dean-Kawasaki dynamics.
Evaluating a self-proclaimed successful Dutch supply chain partnership
Creators: name: Venselaar, Marieke
Publisher: name: A+BE | Architecture and the Built Environment
Year: 2018

description: This study aims to reflect on experiences of professionals from a Dutch housing association and a contractor who perceive their relation as a successful supply chain partnership (SCP). Employing a narrative approach, this study shows the subgrouping in informal relations within and around the successful supply chain. The subgrouping shows examples of visible and hidden power dynamics. We conclude that, although the perception of success may have positive spin-offs, the members are not always positive about each other, SCP is applied to only a limited part of the client’s internal supply chain, SCP is applied in an arbitrary way that not always seems to be fair, and continuation of the success in the future is uncertain. The study provokes many practical interventions, but the main recommendation is to keep reflecting on informal relations to address some of the social issues.
description: A+BE | Architecture and the Built Environment, No. 15 (2017): Work Floor Experiences of Supply Chain Partnering in the Dutch Housing Sector
Narrating the German loss: small histories and the historiography of Fascist violence
Creators: name: Hennlich, Andrew J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Witness is the primary form of documenting histories of Fascist violence. Despite the inherent problems associated with witnessing, it incorporates itself into purportedly objective and scientific histories. Responding to Hayden White’s claim that all histories are narrative in structure, my thesis interrogates two artist’s works- W.G. Sebald’s last novel Austerlitz and Christian Boltanski’s Resistance. Each project examines the relationships between witness, photography and archives, constructing what Boltanski terms “small histories” – personal memories, unique to the individual making up an important aspect of their identity, falling outside of “objective” histories. Sebald and Boltanski’s narratives become exemplars of a literary history, supplementing the gaps within history writing, making “small histories” an essential part of historiography. Writing histories of Fascist violence in this way counters the ideological and overwhelming images of the Holocaust. Instead their images preserve a trace of the individual’s life rather than death, narrating histories that are self-reflexive and open.
Linking the Bilingual Latin-English Dictionary Lewis & Short to the LiLa Knowledge Base
Creators: name: Martinelli, Ginevra
name: Passarotti, Marco
Publisher: name: Zenodo
Year: 2022
Subjects: linked open data
computational linguistics
latin
dictionaries

description: This poster describes the work performed to link 1,480 lexical entries of the bilingual Latin-English dictionary by Lewis & Short to the Knowledge Base of interoperable linguistic resources for Latin LiLa.
Work floor experiences of construction partnering in the Netherlands
Creators: name: Venselaar, Marieke
Publisher: name: A+BE | Architecture and the Built Environment
Year: 2018

description: This research aims at understanding daily work floor experiences of project leaders of Dutch housing associations who try to apply the principles of SCP. By comparing three cases it was found that: 1) despite the attention, engagement, and effort put into applying the principles of SCP, there are no indications that this lead to fundamental and structural improvement of intra- and inter-organizational collaborations. 2) intra-organizational relationships are just as important as inter-organizational relationships when it comes to implementing principles of SCP. 3) integrative activities are conducted and perceived as not rational, chaotic, contradictory, not finished and/or not followed up. Although the results may provoke practical managerial interventions, we recommend not to come to that kind of managerial interventions too quickly. Instead, we recommend getting actively involved in complex responsive processes that constitute the forming of SCP. In this way, cooperating with supply chain partners becomes a matter of a dynamic and personal process of development, rather than a managerial problem that is abstracted from daily work practice.
description: A+BE | Architecture and the Built Environment, No. 15 (2017): Work Floor Experiences of Supply Chain Partnering in the Dutch Housing Sector
Conclusions
Creators: name: Venselaar, Marieke
Publisher: name: A+BE | Architecture and the Built Environment
Year: 2018

description: This research aimed to describe work floor experiences of project leaders who work for Dutch housing associations and who attempt to apply principles of SCP. Reason to do this, was that current research about SCP does not provide insight in what goes on at the work floor. This insight is necessary, because supply chain partnering is formed by ongoing complex responsive processes of interaction between professionals in their daily work life. To intervene effectively and to improve performances of collaboration, work floor experiences were studied. This research consists of a literature review, three case studies, and an overarching study in which the insights that are gained in the three case studies are synthesized.
description: A+BE | Architecture and the Built Environment, No. 15 (2017): Work Floor Experiences of Supply Chain Partnering in the Dutch Housing Sector
Cosmological dynamics of extended chameleons
Creators: name: Tamanini, Nicola
name: Wright, Matthew
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the cosmological dynamics of the recently proposed extended chameleon models at both background and linear perturbation levels. Dynamical systems techniques are employed to fully characterize the evolution of the universe at the largest distances, while structure formation is analysed at sub-horizon scales within the quasi-static approximation. The late time dynamical transition from dark matter to dark energy domination can be well described by almost all extended chameleon models considered, with no deviations from $Λ$CDM results at both background and perturbation levels. The results obtained in this work confirm the cosmological viability of extended chameleons as alternative dark energy models.
description: JCAP style, 31 pages, 6 figures, 8 tables; v2: acknowledgements added
Gestational and lactational α-linolenic acid availability induces epigenetic changes in the brain of mouse offspring
Creators: name: He, Fuli
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: It has been acknowledged that dietary n-3 fatty acids improve memory and learning, in part by altering gene expression in the brain. However, the exact mechanisms are far from being clear, especially for α-linolenic acid (ALA). Inadequate perinatal nutrition can induce persistent changes in offspring phenotype, acting through epigenetic process. We investigated the effects of maternal ALA intakes on the epigenetic regulation of memory-associated genes, in the offspring brains, at the end of lactation (postnatal day 19, P19). Postnatal ALA supplementation altered mRNA expression of Mecp2, Ppp1cc, Reelin and Dnmt3a, while ALA deficiency during gestation induced changes in methylation of CpG sites in either promoter or intron1 of these genes. In addition, bivariate analysis indicated some significant associations between CpG site-specific methylation and the expression of Dnmt3a (p < 0.05). In summary, the interplay between ALA availability during gestation and lactation can differentially alter methylation and expression of genes involved in neurogenesis and synaptic plasticity, potentially affecting brain development and memory-related biological processes. However, further studies are needed to confirm the physiological effects of ALA.
icse2023-paper908-replication-pkg
Creators: name: Sangaroonsilp, Pattaraporn
name: Dam, Hoa Khanh
name: Ghose, Aditya
Publisher: name: figshare
Year: 2023
Subjects: Software engineering not elsewhere classified

description: This is a replication package of the paper entitled "On Privacy Weaknesses and Vulnerabilities in Software Systems" accepted at the International Comference on Software Engineering (ICSE) 2023.
Deterministic Sampling for Nonlinear Dynamic State Estimation
Creators: name: Gilitschenski, Igor
Publisher: name: KIT Scientific Publishing
Year: 2016
Subjects: Stochastische Filterung
Sensordatenfusion
Richtungsstatistik
Dichteapproximation
Stochastic Filtering
Sensor Data Fusion
Directional Statistics
Density Approximation

description: The goal of this work is improving existing and suggesting novel filtering algorithms for nonlinear dynamic state estimation. Nonlinearity is considered in two ways: First, propagation is improved by proposing novel methods for approximating continuous probability distributions by discrete distributions defined on the same continuous domain. Second, nonlinear underlying domains are considered by proposing novel filters that inherently take the underlying geometry of these domains into account.
Simple-average expressions for shear-stress relaxation modulus
Creators: name: Wittmer, J. P.
name: Xu, H.
name: Baschnagel, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Focusing on isotropic elastic networks we propose a novel simple-average expression $G(t) = μ_A - h(t)$ for the computational determination of the shear-stress relaxation modulus $G(t)$ of a classical elastic solid or fluid and its equilibrium modulus $\G_{eq} = \lim_{t \to \infty} G(t)$. Here, $μ_A = G(0)$ characterizes the shear transformation of the system at $t=0$ and $h(t)$ the (rescaled) mean-square displacement of the instantaneous shear stress $\hatτ(t)$ as a function of time $t$. While investigating sampling time effects we also discuss the related expressions in terms of shear-stress autocorrelation functions. We argue finally that our key relation may be readily adapted for more general linear response functions.
description: 6 pages, 4 figures
Using superlattice potentials to probe long-range magnetic correlations in optical lattices
Creators: name: Pedersen, Kim G. L.
name: Andersen, Brian M.
name: Bruun, Georg M.
name: Sørensen, Anders S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In Pedersen et al. (2011) we proposed a method to utilize a temporally dependent superlattice potential to mediate spin-selective transport, and thereby probe long and short range magnetic correlations in optical lattices. Specifically this can be used for detecting antiferromagnetic ordering in repulsive fermionic optical lattice systems, but more generally it can serve as a means of directly probing correlations among the atoms by measuring the mean value of an observable, the number of double occupied sites. Here, we provide a detailed investigation of the physical processes which limit the effectiveness of this "conveyer belt method". Furthermore we propose a simple ways to improve the procedure, resulting in an essentially perfect (error-free) probing of the magnetic correlations. These results shows that suitably constructed superlattices constitute a promising way of manipulating atoms of different spin species as well as probing their interactions.
description: 12 pages, 9 figures
The economic benefit of artificial intelligence-supported continuous vital signs monitoring systems in health care
Creators: name: Larsen, Arendse
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Health Economics
subject: Health Information Technology
subject: Medicine and Health Sciences
subject: Analytical, Diagnostic and Therapeutic Techniques and Equipment
subject: Economics
subject: Social and Behavioral Sciences

description: Protocol for The economic evidence of artificial intelligence-supported continuous vital signs monitoring systems in health care: A scoping review
Mean-field inference of Hawkes point processes
Creators: name: Bacry, Emmanuel
name: Gaïffas, Stéphane
name: Mastromatteo, Iacopo
name: Muzy, Jean-François
Publisher: name: arXiv
Year: 2015
Subjects: subject: Machine Learning (cs.LG)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We propose a fast and efficient estimation method that is able to accurately recover the parameters of a d-dimensional Hawkes point-process from a set of observations. We exploit a mean-field approximation that is valid when the fluctuations of the stochastic intensity are small. We show that this is notably the case in situations when interactions are sufficiently weak, when the dimension of the system is high or when the fluctuations are self-averaging due to the large number of past events they involve. In such a regime the estimation of a Hawkes process can be mapped on a least-squares problem for which we provide an analytic solution. Though this estimator is biased, we show that its precision can be comparable to the one of the Maximum Likelihood Estimator while its computation speed is shown to be improved considerably. We give a theoretical control on the accuracy of our new approach and illustrate its efficiency using synthetic datasets, in order to assess the statistical estimation error of the parameters.
description: 29 pages, 8 figures
title: Great Britain Ministry of Information - Daily Press Notices and Bulletins (1944-03-12)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1944
Subjects: subject: World War, 1939-1945 – Social aspects
subject: World War, 1939-1945 -- History
subject: World War II
subject: Second World War
subject: World War Two
subject: Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Applying Residential Demand Response: An Easy-to-Adopt Approach to Encourage Implementation in Italy
Creators: name: Schiattareggia, Fabio
Publisher: name: University of Illinois at Chicago
Year: 2023

description: This thesis investigates the practical implementation of a residential demand response (DR) strategy, focusing on real-time price (RTP) forecasting and optimal appliance scheduling. Given the complexity of the Italian electricity market and the challenges it poses to residential consumers, the study proposes a localized DR strategy that relies on accurate RTP prediction and user-convenient appliance scheduling. A primary objective of this research is to demonstrate the viability of an LSTM-based price prediction model as an effective tool for forecasting RTP, outperforming traditional ARIMA models, despite using a single input feature. The superior performance of LSTM neural networks in recognizing and learning from past price patterns contributes to enhancing the efficiency of the DR strategy. A further significant aspect of this study is the introduction of a straightforward Mixed-Integer Linear Programming (MILP) model for appliance scheduling. This model, designed to work effectively within the computational constraints of a residential smart meter, leverages user-defined constraints to ensure optimal appliance operation without causing user discomfort. The user-friendly nature of this model makes it a realistic and practical solution for real-world DR applications. The study demonstrates the effectiveness of the proposed DR strategy, achieving substantial electricity cost savings. A key advantage of the proposed strategy is its localized nature, eliminating the need for demand response aggregator intermediaries and mitigating network investment requirements. This feature, along with the protection of consumer privacy, contributes to making the proposed DR approach an appealing solution for the Italian residential sector, hence encouraging the adoption of DR strategies. The study also acknowledges the limitations inherent in the adopted approach, such as the dependence on accurate price predictions and the simplification of the scheduling algorithm, offering avenues for future research to refine the DR strategy further. Overall, this thesis contributes valuable insights into the practical implementation of a localized DR strategy, adding to the existing body of knowledge in the field of residential energy management.
Cosmological dynamics of scalar fields with kinetic corrections: Beyond the exponential potential
Creators: name: Dutta, Jibitesh
name: Khyllep, Wompherdeiki
name: Tamanini, Nicola
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We expand the dynamical systems investigation of cosmological scalar fields characterised by kinetic corrections presented in [N. Tamanini, Phys. Rev. D 89 (2014) 083521]. In particular we do not restrict the analysis to exponential potentials only, but we consider arbitrary scalar field potentials and derive general results regarding the corresponding cosmological dynamics. Two specific potentials are then used as examples to show how these models can be employed not only to describe dark energy, but also to achieve dynamical crossing of the phantom barrier at late times. Stability and viability issues at the classical level are also discussed.
description: 18 pages, 11 figures, 4 tables, accepted by Phys. Rev. D; v2: acknowledgements added
Efficient Gossip Protocols for Verifying the Consistency of Certificate Logs
Creators: name: Chuat, Laurent
name: Szalachowski, Pawel
name: Perrig, Adrian
name: Laurie, Ben
name: Messeri, Eran
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The level of trust accorded to certification authorities has been decreasing over the last few years as several cases of misbehavior and compromise have been observed. Log-based approaches, such as Certificate Transparency, ensure that fraudulent TLS certificates become publicly visible. However, a key element that log-based approaches still lack is a way for clients to verify that the log behaves in a consistent and honest manner. This task is challenging due to privacy, efficiency, and deployability reasons. In this paper, we propose the first (to the best of our knowledge) gossip protocols that enable the detection of log inconsistencies. We analyze these protocols and present the results of a simulation based on real Internet traffic traces. We also give a deployment plan, discuss technical issues, and present an implementation.
description: 9 pages, 5 figures
Role of Fintech in Enhancing Credit Usage Among the Un(der)-Banked
Creators: name: Ntwiga, Davis
Publisher: name: Academia Kenya
Year: 2021
Subjects: Kenya
Fintech

description: The un(der)-banked lack financial histories and financial strength to be attractive to financial institutions, and this limits their ability to access credit. In 2015, around 36.1 percent of Kenyans were classified as poor. Access to micro- credit loans through financial technology (Fintech) can promote individual outcomes while contributing to several of the United Nations’ Sustainable Development Goals (Hove and Dubus, 2019). Some of the un(der)-banked perceive technology to be risky and not easy to use. A study in 2016 found that M-Pesa had lifted 2 percent of Kenyans out of poverty and reduced the unbanked population (Hove and Dubus, 2019). A Financial Access Household Survey in 2016 noted that individuals seek financial products that cater to their small and inconsistent incomes, offer better tools for managing day to day transactions and risks, while supporting them to face major life transitions (FSD, 2016). This profile of consumers requires an innovative approach, for example, through the use of big data and artificial intelligence deployed by Fintech firms, to cater for their lack of financial histories in the credit lending process. The availability of soft information means that Fintech can cater for this market gap to further enhance financial inclusion if vibrant, competitive and sound credit market practices are introduced and enforced.
The Einstein static universe in Scalar-Fluid theories
Creators: name: Boehmer, Christian G.
name: Tamanini, Nicola
name: Wright, Matthew
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A new Lagrangian framework has recently been proposed to describe interactions between relativistic perfect fluids and scalar fields. In this paper we investigate the Einstein static universe in this new class of theories, which have been named Scalar-Fluid theories. The stability of the static solutions to both homogeneous and inhomogeneous perturbations is analysed deriving the relevant cosmological perturbation equations at the linear order. We can find several configurations corresponding to an Einstein static universes which are stable against inhomogeneous perturbations, but unstable against homogeneous perturbations. This shows the possible applications of Scalar-Fluid theories to the inflationary emergent universe scenario.
description: 16 pages, 4 figures
Impact-driven planetary desiccation: The origin of the dry Venus
Creators: name: Kurosawa, Kosuke
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The fate of surface water on Venus is one of the most important outstanding problems in comparative planetology. Here a new concept is proposed to explain water removal on a steam-covered proto Venus, referred to as impact-driven planetary desiccation. Since a steam atmosphere is photochemically unstable, water vapor dissociates into hydrogen and oxygen. Then, hydrogen escapes easily into space through hydrodynamic escape driven by strong extreme ultraviolet radiation from the young Sun. The focus is on the intense impact bombardment during the terminal stage of planetary accretion as generators of a significant amount of reducing agent. The fine-grained ejecta remove the residual oxygen, the counter part of escaped hydrogen, via the oxidation of iron-bearing rocks in a hot atmosphere. Thus, hypervelocity impacts cause net desiccation of the planetary surface. I constructed a stochastic cratering model using a Monte Carlo approach to investigate the cumulative mass of nonoxidized, ejected rocks due to the intense impact bombardment. It is shown that a thick steam atmosphere with a mass equivalent to that of the terrestrial oceans would be removed. The cumulative mass of rocky ejecta released into the atmosphere reaches 1 wt% of the host planet, which is 10000 times of the current mass of the Earths atmosphere. These results strongly suggest that chemical reactions between such large amounts of ejecta and planetary atmospheres are among the key factors required to understand atmospheric mass and its composition, not only in the Solar System but also in extrasolar systems.
description: 46 pages, 8 figures, Published in Earth and Planetary Science Letters
Sparse Sampling of Water Density Fluctuations in Interfacial Environments
Creators: name: Xi, Erte
name: Remsing, Richard C.
name: Patel, Amish J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The free energetics of water density fluctuations near a surface, and the rare low-density fluctuations in particular, serve as reliable indicators of surface hydrophobicity; the easier it is to displace the interfacial waters, the more hydrophobic the underlying surface. However, characterizing the free energetics of such rare fluctuations requires computationally expensive, non-Boltzmann sampling methods like umbrella sampling. This inherent computational expense associated with umbrella sampling makes it challenging to investigate the role of polarizability or electronic structure effects in influencing interfacial fluctuations. Importantly, it also limits the size of the volume, which can be used to probe interfacial fluctuations. The latter can be particularly important in characterizing the hydrophobicity of large surfaces with molecular-level heterogeneities, such as those presented by proteins. To overcome these challenges, here we present a method for the sparse sampling of water density fluctuations, which is roughly two orders of magnitude more efficient than umbrella sampling. We employ thermodynamic integration to estimate the free energy differences between biased ensembles, thereby circumventing the umbrella sampling requirement of overlap between adjacent biased distributions. Further, a judicious choice of the biasing potential allows such free energy differences to be estimated using short simulations, so that the free energetics of water density fluctuations are obtained using only a few, short simulations. Leveraging the efficiency of the method, we characterize water density fluctuations in the entire hydration shell of the protein, ubiquitin; a large volume containing an average of more than six hundred waters.
Maintaining the boundaries of nomos: phthonotic responses to sociopolitical perturbations in Herodotus' Histories
Creators: name: Esposito, John
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Herodotus begins the Histories with a series of princess-thefts, each resolved by a straightforward tisis response. This simple quantitative equalization is complicated by the Greek theft of Medea without recompense, and Paris appeals to this imbalanced theft as precedent. This appeal implies common east-west membership in a nomotic system in a way that will contribute significantly to the rest of the narrative. The Candaules logos introduces the inverse proportionality characteristic of the circumstances to which phthonos responds; the Croesus logos extends phthonos to the gods, which describes the nomotic system of the kosmos. The Cambyses logos introduces a political formulation of "unlimited monarchy" that precludes any nomoi whatsoever, and puts the Persian monarch in a potentially phthonotic relation to all others. Darius attempts to avoid phthonos from his subjects by imperial expansion, and Xerxes' coerced submission to nomos in book 9 hearkens back to the Candaules logos in book 1.
AGN duty cycle estimates for the ultra-steep spectrum radio relic VLSS J1431.8+1331
Creators: name: Shulevski, A.
name: Morganti, R.
name: Barthel, P. D.
name: Harwood, J. J.
name: Brunetti, G.
name: van Weeren, R. J.
name: Röttgering, H. J. A.
name: White, G. J.
name: Horellou, C.
name: Kunert-Bajraszewska, M.
name: Jamrozy, M.
name: Chyzy, K. T.
name: Mahony, E.
name: Miley, G.
name: Brienza, M.
name: Bîrzan, L.
name: Rafferty, D. A.
name: Brüggen, M.
name: Wise, M. W.
name: Conway, J.
name: de Gasperin, F.
name: Vilchez, N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Steep spectrum radio sources associated with active galactic nuclei (AGN) may contain remnants of past AGN activity episodes. Novel instruments like the LOw Frequency ARray (LOFAR) are enabling studies of these fascinating structures to be made at tens to hundreds of MHz with sufficient resolution to analyse their complex morphology. Our goal is to characterize the integrated and resolved spectral properties of VLSS J1431+1331 and estimate source ages based on synchrotron radio emission models, thus putting constraints on the AGN duty cycle. Using a broad spectral coverage, we have derived spectral and curvature maps, and used synchrotron ageing models to determine the time elapsed from the last time the source plasma was energized. We used LOFAR, Giant Metrewave Radio Telescope (GMRT) and Jansky Very Large Array (VLA) data. Based on our ageing analysis, we infer that the AGN that created this source currently has very low levels of activity or that it is switched off. The derived ages for the larger source component range from around 60 to 130 Myr, hinting that the AGN activity decreased or stopped around 60 Myr ago. Our analysis suggests that VLSS J1431.8+1331 is an intriguing, two-component source. The larger component seems to host a faint radio core, suggesting that the source may be an AGN radio relic. The spectral index we observe from the smaller component is distinctly flatter at lower frequencies than the spectral index of the larger component, suggesting the possibility that the smaller component may be a shocked plasma bubble. From the integrated source spectrum, we deduce that its shape and slope can be used as tracers of the activity history of this type of steep spectrum radio source.
description: 11 pages, 7 figures
Physical Properties of Spectroscopically-Confirmed Galaxies at $z\ge6$. III. Stellar Populations from SED Modeling with Secure Ly$α$ Emission and Redshifts
Creators: name: Jiang, Linhua
name: Finlator, Kristian
name: Cohen, Seth H.
name: Egami, Eiichi
name: Windhorst, Rogier A.
name: Fan, Xiaohui
name: Dave, Romeel
name: Kashikawa, Nobunari
name: Mechtley, Matthew
name: Ouchi, Masami
name: Shimasaku, Kazuhiro
name: Clement, Benjamin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of stellar populations in a sample of spectroscopically-confirmed Lyman-break galaxies (LBGs) and Ly$α$ emitters (LAEs) at $5.7
description: 19 pages, 15 figures, accepted for publication in ApJ
Equivalence relations invariant under group actions
Creators: name: Rzepecki, Tomasz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Logic (math.LO)
subject: General Topology (math.GN)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 03C45, 03E15, 22C05, 54H15

description: We extend some recent results about bounded invariant equivalence relations and invariant subgroups of definable groups: we show that type-definability and smoothness are equivalent conditions in a wider class of relations than heretofore considered, which includes all the cases for which the equivalence was proved before. As a by-product, we show some analogous results in purely topological context (without direct use of model theory).
description: 23 pages, streamlined version
Bloch oscillations in non-Hermitian lattices with trajectories in complex plane
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Bloch oscillations (BOs), i.e. the oscillatory motion of a quantum particle in a periodic potential, are one of the most striking effects of coherent quantum transport in the matter. In the semiclassical picture, it is well known that BOs can be explained owing to the periodic band structure of the crystal and the so-called 'acceleration' theorem: since in the momentum space the particle wave packet drifts with a constant speed without being distorted, in real space the probability distribution of the particle undergoes a periodic motion following a trajectory which exactly reproduces the shape of the lattice band. In non-Hermitian lattices with a complex (i.e. not real) energy band, extension of the semiclassical model is not intuitive. Here we show that the acceleration theorem holds for non-Hermitian lattices with a complex energy band only {\it on average}, and that the periodic wave packet motion of the particle in the real space is described by a trajectory in {\it complex} plane, i.e. it generally corresponds to reshaping and breathing of the wave packet in addition to a transverse oscillatory motion. The concept of BOs involving complex trajectories is exemplified by considering two examples of non-Hermitian lattices with a complex band dispersion relation, including the Hatano-Nelson tight-binding Hamiltonian describing the hopping motion of a quantum particle on a linear lattice with an imaginary vector potential and a tight-binding lattice with imaginary hopping rates.
description: 9 pages, 6 figures, to appear in Phys. Rev. A
Evidence for 2009 WN25 being the parent body of the November i-Draconids (NID)
Creators: name: Micheli, Marco
name: Tholen, David J.
name: Jenniskens, Peter
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this work we propose the Amor-type asteroid 2009 WN25 as the likely progenitor of the November i-Draconids (NID, IAU#392), a recently detected weak annual meteoroid stream. We first describe our recovery and follow-up effort to obtain timely ground based astrometry with large aperture telescopes, and ensure that 2009 WN25 would not become lost. We then discuss the possible parent-stream association, using its updated orbit to model the ejection of dust particles from the surface of the parent body and match the observed properties of the stream.
description: Submitted to Icarus
The Fine Structure of Herman Rings
Creators: name: Fagella, Núria
name: Henriksen, Christian
Publisher: name: arXiv
Year: 2015
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37F10 (Primary), 30D20 (Secondary)

description: We study the geometric structure of the boundary of Herman rings in a model family of Blaschke products of degree 3. Shishikura's quasiconformal surgery relates the Herman ring to the Siegel disk of a quadratic polynomial. By studying the regularity properties of the maps involved, we can transfer McMullen's results on the fine local geometry of Siegel disks to the Herman ring setting.
description: 17 pages, 3 figures
Electromagnetic spectral properties and Debye screening of a strongly magnetized hot medium
Creators: name: Bandyopadhyay, Aritra
name: Islam, Chowdhury Aminul
name: Mustafa, Munshi G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have evaluated the electromagnetic spectral function and its spectral properties by computing the one-loop photon polarization tensor in presence of magnetic field, particularly in a strong field approximation compared to the thermal scale. When the magnetic scale is higher than the thermal scale the lowest Landau level (LLL) becomes effectively (1+1) dimensional strongly correlated system that provides a kinematical threshold based on the mass scale. Beyond this threshold the photon strikes the LLL and the spectral strength starts with a high value due to the dimensional reduction and then falls off with increase of the photon energy due to LLL dynamics in a strong field approximation. This strongly enhances the dilepton rate over the thermal perturbative leading order (Born) rate at very low invariant mass. We have also investigated the electromagnetic screening by computing the Debye screening mass and it depends distinctively on three different scales (mass of the quasiquark, temperature and the magnetic field strength) of a hot magnetized system. The mass dependence of the Debye screening supports the occurrence of a magnetic catalysis effect in the strong field approximation.
description: 18 pages, 8 figures; Matches with the published version
Restricted hom-Lie algebras
Creators: name: Guan, Baoling
name: Chen, Liangyun
Publisher: name: arXiv
Year: 2015
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: The paper studies the structure of restricted hom-Lie algebras. More specifically speaking, we first give the equivalent definition of restricted hom-Lie algebras. Second, we obtain some properties of $p$-mappings and restrictable hom-Lie algebras. Finally, the cohomology of restricted hom-Lie algebras is researched.
description: 15pages. arXiv admin note: text overlap with arXiv:math/0111090, arXiv:1005.0140 by other authors
The falcon, the beast and the image: Dante's Geryon and W. B. Yeats' The second coming
Creators: name: Cane, David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The following study aims to fill a void in Yeatsian scholarship by investigating the under-analyzed link between William Butler Yeats’ late poetic production and the work of the medieval Florentine poet Dante Alighieri (1265-1321), focusing primarily but not exclusively on Yeats’ poem The Second Coming. An overview of Yeats’ reception of Dante’s literary corpus highlights a constant and constantly increasing interest in the Florentine poet’s work on the part of the Irish writer. Close attention is paid to the role of Dante in Yeats’ problematic esoteric volume A Vision, both as a ‘character’ within the work itself and as a shaping force behind the famous ‘system’ which the work outlines, and which serves as the theoretical/ideological backbone for all of Yeats’ successive poetic output. Finally, this study attempts a detailed search for Dantean traces in The Second Coming, arguably Yeats’ most read poem and one that has been called an emblem and a microcosm of all his late poetry. An analysis of the passages from Inferno that serve as a backdrop for The Second Coming’s imagery reveals how this lyric incorporates Dantean elements to a far greater degree than has been observed to this point. Furthermore, a look at the poem’s process of revision reveals how the work, from the earliest manuscript drafts to the final version, was progressively brought closer to Dantean models and tones.
The nature of qualitative construction partnering research
Creators: name: Venselaar, Marieke
name: Wamelink, Hans
Publisher: name: A+BE | Architecture and the Built Environment
Year: 2018

description: This paper investigates the nature of qualitative construction partnering research, by reviewing academic peer reviewed papers about this topic. Results show that most papers focus on multi-player, inter-organizational relationships in supply chains that collaborate in new building projects. Intra-organizational relationships collaborating in existing projects are underexposed. Also, four methodological gaps are identified. 1) Insight in the process of data analysis is underexposed. 2) Reflection on the role of the researcher(s) in the research process is underexposed. 3) The individual level of analysis is underexposed. 4) The way in which the results are generalized remain somewhat opaque, especially reflections on internal generalization is underexposed. All identified gaps have in common that specific time and place dependent details that may have influenced understanding of studied individuals are underexposed. This may explain why construction partnering research is experienced by some authors as stylized and abstracted from working practice. The identified gaps are translated into recommendations for further study. Applying the recommendations, will lead to a research discourse that represent the characteristics of ordinary working practice and the process of studying that working practice. More focus on local time and place dependent factors of the studied individuals as well as the process of studying it, inevitably leads to encountering (and becoming more aware of) personal, subjective and unexplainable decisions and behavior. By applying the recommendations, this paper attempts to contribute to further development of academic research on this topic and increase effectiveness of partnering in the construction sector.
description: A+BE | Architecture and the Built Environment, No. 15 (2017): Work Floor Experiences of Supply Chain Partnering in the Dutch Housing Sector