cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bilinear embedding theorems for differential operators in $\mathbb{R}^2$
Creators: name: Stolyarov, Dmitriy M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We prove bilinear inequalities for differential operators in $\mathbb{R}^2$. Such type inequalities turned out to be useful for anisotropic embedding theorems for overdetermined systems and the limiting order summation exponent. However, here we study the phenomenon in itself. We consider elliptic case, where our analysis is complete, and non-elliptic, where it is not. The latter case is related to Strichartz estimates in a very easy case of two dimensions.
description: 17 pages
Temnothorax augusti
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax augusti

description: augusti group overview With four species (two described as new here), the augusti group is another small group with a range spanning the low-to-mid elevations of central Mexico to Central America (Fig. 101). Although little is known about the biology of the members of this group, the nominal Temnothorax augusti was collected from epiphytes, and T. leucacanthoides sp. nov. was collected from a dead stalk of Asteraceae; nesting in vegetation may prove to be the rule for this group as more collections are made. Members of this group may be confused with T. casanovai sp. nov. or T. tenuisculptus. They may be separated from these by the petiolar node that overhangs the caudal cylinder (perpendicular in T. tenuisculptus) and the faintly areolate first gastral tergite (strongly areolate in T. casanovai sp. nov.).
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 121, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
A characterization of semiprojectivity for subhomogeneous C*-algebras
Creators: name: Enders, Dominic
Publisher: name: arXiv
Year: 2014
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: Primary 46L05, Secondary 46L80, 46L85, 54C55, 54F50

description: We study semiprojective, subhomogeneous C*-algebras and give a detailed description of their structure. In particular, we find two characterizations of semiprojectivity for subhomogeneous C*-algebras: one in terms of their primitive ideal spaces and one by means of special direct limit structures over one-dimensional NCCW complexes. These results are obtained by working out several new permanence results for semiprojectivity, including a complete description of its behavior with respect to extensions by homogeneous C*-algebras.
description: 43 pages
For optical flickering in symbiotic star MWC 560
Creators: name: Marchev, Dragomir
name: Stoyanov, Kiril
name: Marchev, Vladislav
name: Zamanov, Radoslav
name: Borisov, Borislav
name: Vasileva, Doroteq
name: Atanasova, Teodora
name: Pavlova, Nataliya
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This study is based on observations of MWC560 during the last two observational seasons (2020/2021 and 2021/2022). Other than looking for flickering we were interested in following the variability of brightness in the same period. Looking for similarities in the spectra with other types of stars is also of great interest to us because it could help clarify the stellar configuration of such objects. Our observations during the last two observational seasons of MWC560 confirm the absence of flickering. From the similarities of the gathered spectra of XX Oph and MWC560 we assume that the components in XX Oph are a red giant and a white dwarf, which are also surrounded by a common shell.
The Anatomy of Shi'i Shrine Cities: Pivots in World Politics
Creators: name: Parkes, Aidan
Publisher: name: The Australian National University
Year: 2023

description: This thesis is about the enduring importance of Shi'i shrine cities in world politics. Shrines are important sites of religious identity that are often analysed from a single perspective of conflict, clerical authority, or collective identity in the literature. This thesis overcomes this gap in various ways. It argues that shrines are constructed as 'pivots' in world politics through both clerical authority and collective identity. Semantically, it accepts a dual meaning of 'pivot' as both a generative noun and an agential verb. It presents a conceptual understanding of power with spatial and temporal dimensions. To demonstrate this process, it uses the Iraqi cities of Najaf and Karbala as case studies. The case studies reveal how clerical authority is the most salient temporal pivot in Najaf and collective identity is the most salient spatial pivot in Karbala. The empirical analyses are respectively dedicated to understanding how Najaf's sacred authority 'pivots' world politics in an agential way during 'critical temporalities', and how Karbala's sacred spaces and Ashura-oriented rituals and textual cosmologies have a generative power, which constructs it as a spatial 'pivot' in world politics through its reproduction of collective Shi'i identity. Chapter One provides an historical overview of Najaf and Karbala and traces the evolution of collective Shi'i identity in shrine cities. Chapter Two details the theoretical framework which draws on theories of clerical authority, temporality, and spatiality. While chapters Three and Four demonstrate the agential power of Najaf's clerical authority using a temporal approach, chapters Five and Six take a spatial approach to illustrate Karbala's generative power as a representation and reminder of Ashura. By adopting this multidimensional approach, the thesis provides a comprehensive understanding how Shi'i shrine cities are constructed as pivots in world politics.
Authorship Identification of Source Code Segments Written by Multiple Authors Using Stacking Ensemble Method
Creators: name: Mahbub, Parvez
name: Oishie, Naz Zarreen
name: Haque, S M Rafizul
Publisher: name: arXiv
Year: 2022
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Source code segment authorship identification is the task of identifying the author of a source code segment through supervised learning. It has vast importance in plagiarism detection, digital forensics, and several other law enforcement issues. However, when a source code segment is written by multiple authors, typical author identification methods no longer work. Here, an author identification technique, capable of predicting the authorship of source code segments, even in the case of multiple authors, has been proposed which uses a stacking ensemble classifier. This proposed technique is built upon several deep neural networks, random forests and support vector machine classifiers. It has been shown that for identifying the author group, a single classification technique is no longer sufficient and using a deep neural network-based stacking ensemble method can enhance the accuracy significantly. The performance of the proposed technique has been compared with some existing methods which only deal with the source code segments written precisely by a single author. Despite the harder task of authorship identification for source code segments written by multiple authors, our proposed technique has achieved promising results evidenced by the identification accuracy, compared to the related works which only deal with code segments written by a single author.
description: 2019 22nd International Conference on Computer and Information Technology (ICCIT)
Chiral symmetry breaking as a geometrical process
Creators: name: Bittencourt, Eduardo
name: Faci, Sofiane
name: Novello, Mário
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This article expands for spinor fields the recently developed Dynamical Bridge formalism which relates a linear dynamics in a curved space to a nonlinear dynamics in Minkowski space. Astonishingly, this leads to a new geometrical mechanism to generate a chiral symmetry breaking without mass, providing an alternative explanation for the undetected right-handed neutrinos. We consider a spinor field obeying the Dirac equation in an effective curved space constructed by its own currents. This way, both chiralities of the spinor field satisfy the same dynamics in the curved space. Subsequently, the dynamical equation is re-expressed in terms of the flat Minkowski space and then each chiral component behaves differently. The left-handed part of the spinor field satisfies the Dirac equation while the right-handed part is trapped by a Nambu-Jona-Lasinio (NJL) type potential.
description: 6 pages
Improving the analysis and use of patient complaints in the English National Health Service
Creators: name: Van Dael, Jackie
Publisher: name: Imperial College London
Year: 2021

description: The English National Health Service (NHS) receives over 200,000 patient complaints annually. Complaints provide rich narratives of poor and unsafe care, and are often submitted with the aim of preventing harm from occurring to others. Inquiries into safety failures have demonstrated that complaints signal problems where internal systems fail. Yet, their insights remain underutilised due to their complex unstructured nature, a disregard for their informational value, and a complaints process designed for case-by-case redress. This work develops evidence-based and theory-informed approaches towards improving the analysis and use of complaints in the English NHS. Using process modelling and realist review methods, this thesis generates theory on how and under what conditions healthcare settings can achieve both case-by-case redress and system-wide analysis of complaints. Findings identify the need for a robust coding taxonomy to detect systemic problems with healthcare delivery, and support the prioritisation of deeper qualitative analysis and investigation. The inter-rater reliability of the existing NHS complaints reporting scheme ‘KO41a’ is tested across four NHS Trusts, and compared to the psychometrically robust and theory-informed Healthcare Complaints Analysis Tool (HCAT). Results highlight the limited discriminative value of KO41a, and indicate HCAT as a reliable alternative in most investigated settings. Drawing from social science approaches to safety, the final study conducts data linkage and narrative analysis of complaints and staff incident reports, and demonstrates the contributions of using complainants’ interpretation and sense-making of adverse events to test, challenge, and complement staff representations of the causes and severity of harm. Collectively, the work in this thesis demonstrates why patient and staff perspectives need to be combined for a more holistic understanding of patient safety, and provides a pragmatic, evidence-based pathway towards integrating complaints into the historically staff-driven quality monitoring and improvement systems.
Deep Inelastic Scattering with Application to Nuclear Targets: Lectures at the 1985 Los Alamos School on Relativistic Dynamics and Quark Nuclear Physics
Creators: name: Jaffe, Robert L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: This paper is essentially a verbatim reconstruction of lectures that I gave at the Los Alamos School on Relativistic Dynamics and Quark Nuclear Physics in 1985. They were published in the school proceedings, but the book is not widely available. The Los Alamos School took place at the height of the first wave of interest in the quark substructure of nuclei, stimulated by the 1983 discovery of the EMC Effect. Interest in this subject has been increasing for years and the prospect of a dedicated Electron Ion Collider within the decade guarantees even greater attention to quarks and gluons in nuclei among both theorists and experimentalists. Recently, to my surprise, I learned that copies of my old lectures have been circulating and been found useful by the relatively few people who know about them. The are, of course, dated: experiments have far outstripped what was available 37 years ago and theory has progressed too. However, the rest frame derivation of the parton model, the derivation and discussion of the convolution formalism for nucleons, nucleon correlations, and other, virtual, constituents of nuclei, and sections on scaling violation and the operator product expansion have aged pretty well and seem to still be useful. With the help and encouragement of Richard Milner, I have recreated the LaTeX files necessary to post the 1985 Lectures on the arXiv, making them available to the nuclear and particle physics community. Apart from correcting some typographical errors, I have made no attempt to edit, improve, or update these lectures. I hope readers will nevertheless find them useful.
description: Reconstruction of Lectures at the 1985 Los Alamos School on Relativistic Dynamics and Quark Nuclear Physics
Modelling solid/fluid interactions in hydrodynamic flows: a hybrid multiscale approach
Creators: name: Ramos Fernandez, Eduardo
Publisher: name: Imperial College London
Year: 2020

description: With the advent of high performance computing (HPC), we can simulate nature at time and length scales that we could only dream of a few decades ago. Through the development of theory and numerical methods in the last fifty years, we have at our disposal a plethora of mathematical and computational tools to make powerful predictions about the world which surrounds us. From quantum methods like Density Functional Theory (DFT); going through atomistic methods such as Molecular Dynamics (MD) and Monte Carlo (MC), right up to more traditional macroscopic techniques based on Partial Differential Equations (PDEs) discretization like the Finite Element Method (FEM) or Finite Volume Method (FVM), which are respectively, the foundation of computational Structural Analysis and Computational Fluid Dynamics (CFD). Many modern scientific computing challenges in physics stem from combining appropriately two or more of these methods, in order to tackle problems that could not be solved otherwise using just one of them alone. This is known as multi-scale modeling, which aims to achieve a trade-off between computational cost and accuracy by combining two or more physical models at different scales. In this work, a multi-scale domain decomposition technique based on coupling MD and CFD methods, has been developed to make affordable the study of slip and friction, with atomistic detail, at length scales otherwise impossible by fully atomistic methods alone. A software framework has been developed to facilitate the execution of this particular kind of simulations on HPC clusters. This have been possible by employing the in-house developed CPL_LIBRARY software library, which provides key functionality to implement coupling through domain decomposition.
Fuzzy Agent-Based Modeling of Construction Crew Motivation and Performance
Creators: Raoufi, Mohammad
Fayek, Aminah Robinson
Publisher: name: University of Alberta Library
Year: 2018

Recently, agent-based modeling (ABM) has been used to model construction processes and practices because it is capable of handling some of the complexities that arise from the interactions of system components. However, ABM alone cannot take into account the subjective uncertainty that exists in many construction systems. In this paper, a methodology for the development of fuzzy agent-based models in construction is provided, and its application is illustrated using a case study modeling construction crew motivation and performance. This paper makes three contributions: first, it expands ABM’s scope of applicability by integrating it with fuzzy logic to create fuzzy agent-based modeling (FABM) in construction, which can handle both probabilistic and subjective uncertainty; second, it provides a novel methodology for developing fuzzy agent-based models, allowing for the development of new models to assess construction processes and practices; and third, it develops a fuzzy agent-based model of construction crew motivation and performance, which improves the assessments of performance by considering not only the interactions of crews in the project, but also the subjective uncertainty in model variables.
Local Volume dwarf KK242: radial velocity, SF region, and metallicity
Creators: name: Pustilnik, S. A.
name: Tepliakova, A. L.
name: Perepelitsyna, Y. A.
name: Kniazev, A. Y.
name: Makarova, L. N.
name: Burenkov, A. N.
name: Kotov, S. S.
name: Malygin, E. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: KK242 is a LV dwarf of transition type residing in the void environment. Koda et al. present clear indications on its connection with Scd galaxy NGC6503. This implies the distance to KK242 of ~6.3 Mpc and its M_B = -10.5 mag. Its radial velocity, known from the Effelsberg radio telescope \HI\ observations, reveals, however, the difference with that of NGC6503, dV ~ 400 km/s. If real, this fact implies the substantial constraints on its origin. To clear-up the issue of KK242 radial velocity, we obtained with the SAO 6-m telescope spectra of its faint star-forming (SF) complex. H-alpha and H-beta emission is detected in two adjacent compact regions, the southern and northern, separated by ~2" (~60 pc). Their mean radial velocity is V_hel = -66 km/s, ~100 km/s lower than that of NGC6503. We use the HST Legacy Archive images and photometry of individual stars from the Extragalactic Distance Database, available for KK242, to identify in the SF complex the exciting hot stars, the probable BHeB and RHeB stars and a supernova remnant. We address, based on the possible range of its gas metallicity, the probable evolutionary paths of KK242. Using package Cloudy and parameters of the exciting B0V stars, we conclude that the observed flux ratio of [Sii] doublet to H-alpha is consistent with the value of 12+log(O/H) ~7.35+/-0.18 dex, expected for a stripped void dIrr galaxy.
description: 15 pages, 8 figures, 4 tables, published at MNRAS
Posterior contraction rate for non-parametric Bayesian estimation of the dispersion coefficient of a stochastic differential equation
Creators: name: Gugushvili, Shota
name: Spreij, Peter
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: Primary: 62G20, Secondary: 62M05

description: We derive the posteror contraction rate for non-parametric Bayesian estimation of a deterministic dispersion coefficient of a linear stochastic differential equation.
description: 11 pages
Impact Analysis of Superblocks in Berlin
Creators: name: Kreuschner, Moritz
Publisher: name: Zenodo
Year: 2023

description: In consequence of the problems caused by car-centered urban planning of the last decades, restructuring the cities is inevitable. One possible solution is the implementation of superblocks, which are developed and put first into effect in Barcelona. Due to Barcelona's regular morphology, it is predestined for the implementation of superblocks, nevertheless, it is necessary to analyze whether superblocks can also be a suitable strategy in cities with irregular morphology. Therefore, the implementation of superblocks in a city with irregular morphology is investigated - hereby using Berlin as an example. 160 Superblocks were introduced here in four stages with consideration for the neighbourhood structure of Berlin. For this purpose, a criteria-based evaluation catalog by forming various indices was first established as a means to assess city neighbourhoods individually according to their current condition and their development potential towards a superblock.
Since the introduction of such superblocks means a drastic intervention in traffic management, Berlin's city traffic is modeled with the help of the traffic simulation tool, Multi Agent Transport Simulation (MATSim), to analyze the effects of implementing superblocks on traffic. For the purpose of implementing superblocks, the speed for certain links of the network is modified to reflect a realistic representation of superblocks. As a result of the simulations, it can be concluded that only when the speed for cars is drastically reduced within superblocks, the favorable results are achieved: by means of a modal share analysis, it is shown that superblocks implemented in Berlin have the potential to reduce car-focused individual traffic in favor of all other modes of transport. Nevertheless, the reduced number of car trips is distributed rather evenly among the other modes of transport. Furthermore, through traffic can be prevented by superblocks by either changing the infrastructure or greatly reducing the speed limit. In the approach used it played a role that slower speeds made the path through the superblock longer and thus avoided. There is no evidence of significant more traffic on surrounding main roads.
Morphology of Shocked Lateral Outflows in Colliding Hydrodynamic Flows
Creators: name: Markwick, R. N.
name: Frank, A.
name: Carroll-Nellenback, J.
name: Blackman, E. G.
name: Hartigan, P. M.
name: Lebedev, S. V.
name: Russel, D. R.
name: Halliday, J. W. D.
name: Suttle, L. G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Supersonic interacting flows occurring in phenomena such as protostellar jets give rise to strong shocks, and have been demonstrated in several laboratory experiments. To study such colliding flows, we use the AstroBEAR AMR code to conduct hydrodynamic simulations in three dimensions. We introduce variations in the flow parameters of density, velocity, and cross sectional radius of the colliding flows %radius in order to study the propagation and conical shape of the bow shock formed by collisions between two, not necessarily symmetric, hypersonic flows. We find that the motion of the interaction region is driven by imbalances in ram pressure between the two flows, while the conical structure of the bow shock is a result of shocked lateral outflows (SLOs) being deflected from the horizontal when the flows are of differing cross-section.
High-performance polyvinylidene fluoride (PVDF) membranes prepared by the Combined Crystallisation and Diffusion (CCD) method
Creators: name: Shah, Vatsal
Publisher: name: Imperial College London
Year: 2021

description: This work focuses on making PVDF ultrafiltration (UF) membranes by the new innovative Combined Crystallisation and Diffusion (CCD) method. The combined crystallisation and diffusion (CCD) method is a membrane fabrication technique based on a unidirectional freezing approach to fabricate porous membranes. The CCD method offers much better process control and batch reproducibility compared to the traditional methods used in industry such as the non-solvent induced phase separation (NIPS) and the thermally induced phase separation (TIPS). The CCD membranes have also shown to have much better permeances than their commercial counterparts with similar rejections. This work carried out three main studies, with each focusing on controlling the permeation rate, rejection capability and surface hydrophilicity of the CCD membranes respectively. The innovative dual-layer casting approach applied to CCD membranes in this study allows one to independently control the tightness of the separation layer, and improve the porosity in the support layer, which allows one to further enhance the membrane permeances while still maintaining the separation pore sizes. With this technique, it was for the first time that PVDF membranes with pore sizes of ~30 nm had pure water permeances (PWPs) as high as ~2400 LMH.bar-1, which is almost 15 times higher than traditional NIPS membranes. With regards to influencing the membranes’ rejection properties, a simple blending approach using PMMA as the additive was discovered. This is a cost and energy-efficient alternative to reduce the pore size compared to other routes such as increasing the total polymer loading or the cooling duty. Increasing the blender proportion progressively reduced the mean flow pore sizes of the membranes to below 20 nm which is then capable of producing safe drinking water by rejecting most viruses by size exclusion. For improving the membrane surface hydrophilicity, polydopamine (PDA) modification was applied to the CCD UF membranes, and the results showed good permeance recovery post BSA fouling. In fact, the PWP of fouled membranes were still higher by almost 3.5 times than that of fresh (un-fouled) commercial membranes. This showcased the true potential of CCD membranes for real-life applications and its ability to be able to challenge the well-established industry standards.
Supercritical adsorption of CO2 and CH4 on shales and other porous media
Creators: name: Ansari, Humera Sultana
Publisher: name: Imperial College London
Year: 2021

description: Low natural gas recovery factors from shale reservoirs have stimulated interest in Enhanced Shale Gas Recovery (ESGR) using CO2 injection. This process seeks to exploit the preferential adsorption of CO2 in shale's nanometric pores, so as to enhance desorption of CH4 and to promote geological sequestration of CO2. To facilitate the design of this process, an integrated experimental and modelling workflow was developed and deployed on shale samples from the Longmaxi (China), Marcellus (USA) and Bowland (UK) formations to achieve the following: (i) high-resolution textural characterisation, (ii) supercritical adsorption measurements with CO2 and CH4, and (iii) their description by a novel mathematical model that predicts adsorption in chemically and morphologically heterogeneous materials. The results show that CO2 adsorbs more than CH4 at all pressures (2-3 times) and that both adsorption capacities and textural properties are strongly influenced by the shale mineralogy. The model developed in this work is based on the lattice Density Functional Theory and describes adsorption systems featuring both slit and cylindrical pores and accounts for the presence of energetically distinct organic- and clay-rich pore surfaces. The workflow was calibrated on three model adsorbents (mesoporous carbon, microporous activated carbon and micro/mesoporous zeolite) to reveal the distinct pore- filling mechanisms in micro- and meso-pores. The use of these model materials enabled the creation of a predictive modelling approach for the description of shale adsorption data, which only requires knowledge of the shale's composition. An equilibrium-based ESGR proxy reservoir model was also developed and demonstrated that a cyclic CO2 injection operation, which includes a so-called soaking stage, may be required to achieve sufficient recovery and secure CO2 storage. The practical workflow presented in this thesis can be used to quantify accurately the Gas-in-Place and CO2 storage potential of shale reservoirs at subsurface conditions and design an optimal CO2-ESGR process.
Abiotic Ozone and Oxygen in Atmospheres Similar to Prebiotic Earth
Creators: name: Domagal-Goldman, Shawn D.
name: Segura, Antígona
name: Claire, Mark W.
name: Robinson, Tyler D.
name: Meadows, Victoria S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The search for life on planets outside our solar system will use spectroscopic identification of atmospheric biosignatures. The most robust remotely-detectable potential biosignature is considered to be the detection of oxygen (O_2) or ozone (O_3) simultaneous to methane (CH_4) at levels indicating fluxes from the planetary surface in excess of those that could be produced abiotically. Here, we use an altitude-dependent photochemical model with the enhanced lower boundary conditions necessary to carefully explore abiotic O_2 and O_3 production on lifeless planets with a wide variety of volcanic gas fluxes and stellar energy distributions. On some of these worlds, we predict limited O_2 and O_3 build up, caused by fast chemical production of these gases. This results in detectable abiotic O_3 and CH_4 features in the UV-visible, but no detectable abiotic O_2 features. Thus, simultaneous detection of O_3 and CH_4 by a UV-visible mission is not a strong biosignature without proper contextual information. Discrimination between biological and abiotic sources of O_2 and O_3 is possible through analysis of the stellar and atmospheric context - particularly redox state and O atom inventory - of the planet in question. Specifically, understanding the spectral characteristics of the star and obtaining a broad wavelength range for planetary spectra should allow more robust identification of false positives for life. This highlights the importance of wide spectral coverage for future exoplanet characterization missions. Specifically, discrimination between true- and false-positives may require spectral observations that extend into infrared wavelengths, and provide contextual information on the planet's atmospheric chemistry.
description: Accepted for publication in The Astrophysical Journal. 43 pages, 6 figures
title: Κατοικήσιμο μόρφωμα 11/09
titleType: AlternativeTitle
Creators: name: Γαλανού, Άννυ-Θεοδώρα
Publisher: name: University of Thessaly
Year: 2011
Subjects: subject: ΑΡΧΙΤΕΚΤΟΝΙΚΗ, ΟΙΚΙΑΚΗ -- ΑΡΧΙΤΕΚΤΟΝΙΚΑ ΣΧΕΔΙΑ
subject: ΚΑΤΟΙΚΙΕΣ -- ΑΡΧΙΤΕΚΤΟΝΙΚΑ ΣΧΕΔΙΑ

description: Αποδομώντας το παλιμπαιδιστικό σχηματικό σπιτάκι, ανοίγονται νέα πεδία ως προς την έννοια της κατοίκησης. Μετά από πολλαπλά πειράματα και επιμέρους έρευνες, βασισμένες σε συγκεκριμένες θεωρίες και διαρκείς αναφορές στην επιστήμη, την κοινωνιολογία, την φιλοσοφία και την αρχιτεκτονική, καταλήγω σε μια συγκεκριμένη θεωρία περί χώρου. Αν επικεντρωθούμε στον άνθρωπο του Husserl, που αγκαλιάζει τον χώρο με το “σώμα” του, αν προσαρμόσουμε τον modulor του LeCorbusier στις σύγχρονες διατάσεις του, αν μεταφέρουμε το “χαρούμενο χώρο” με τις γωνιές του σπιτιού του Bachelard στους οργανωμένους κατασκευασμένους τόπους του Heidegger, χωρίς να παραβλέψουμε τα ατομικά “αλλού" που ενυπάρχουν στον χώρο όπως επέκταση της απαράμιλλης μεταβλητότητας του χώρου, τίθενται οι βασικές σταθερές σχεδιασμού της σύνθεσης. Η σύνθεση που προτείνω είναι μια από τις πιθανές λύσεις στην προβληματική που θέτω. Τελικά, μετά από επεξεργασία και διάφορους πειραματισμούς, καταλήγω σε σένα “μαγικό χαλί” σε κλίμακα ένα προς ένα. Το μόρφωμα που συνθέτω είναι ένα κατοικήσιμο εργαλείο που ευθύνεται στον άνθρωπο - “σώμα” και δεν περιμένει παρά να γίνει customized ξανά. Πρόκειται για μια πρωτόλεια εργονομική συσκευή που συνεχώς μεταβάλλεται και προσαρμόζεται στις εκάστοτε δραστηριότητες. Τελικά το αποδομημένο σπιτάκι μου, μοιάζει με ένα τοπίο που ακολουθεί, απευθύνεται, εξαρτάται, περιγράφει το “σώμα”.
ecCNO Solar Neutrinos: A Challenge for Gigantic Ultra-Pure Liquid Scintillator Detectors
Creators: name: Villante, F. L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Neutrinos produced in the Sun by electron capture reactions on $^{13}{\rm N}$, $^{15}{\rm O}$ and $^{17}{\rm F}$, to which we refer as ecCNO neutrinos, are not usually considered in solar neutrino analysis since the expected fluxes are extremely low. The experimental determination of this sub-dominant component of the solar neutrino flux is very difficult but could be rewarding since it provides a determination of the metallic content of the solar core and, moreover, probes the solar neutrino survival probability in the transition region at $E_ν\sim 2.5\,{\rm MeV}$. In this letter, we suggest that this difficult measure could be at reach for future gigantic ultra-pure liquid scintillator detectors, such as LENA.
description: 11 pages
Clustered Formation of Massive Stars within an Ionized Rotating Disk
Creators: name: Galván-Madrid, Roberto
name: Zhang, Qizhou
name: Izquierdo, Andrés
name: Law, Charles J.
name: Peters, Thomas
name: Keto, Eric
name: Liu, Hauyu Baobab
name: Ho, Paul T. P.
name: Ginsburg, Adam
name: Carrasco-González, Carlos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present ALMA observations with a 800 au resolution and radiative-transfer modelling of the inner part ($r\approx6000$ au) of the ionized accretion flow around a compact star cluster in formation at the center of the luminous ultra-compact (UC) HII region G10.6-0.4. We modeled the flow with an ionized Keplerian disk with and without radial motions in its outer part, or with an external Ulrich envelope. The MCMC fits to the data give total stellar masses $M_\star$ from 120 to $200~M_\odot$, with much smaller ionized-gas masses $M_\mathrm{ion-gas} = 0.2$ to $0.25~M_\odot$. The stellar mass is distributed within the gravitational radius $R_g\approx 1000$ to 1500 au, where the ionized gas is bound. The viewing inclination angle from the face-on orientation is $i = 49$ to $56~°$. Radial motions at radii $r > R_g$ converge to $v_{r,0} \approx 8.7$ km/s, or about the speed of sound of ionized gas, indicating that this gas is marginally unbound at most. From additional constraints on the ionizing-photon rate and far-IR luminosity of the region, we conclude that the stellar cluster consists of a few massive stars with $M_\mathrm{star} = 32$ to $60~M_\odot$, or one star in this range of masses accompanied by a population of lower-mass stars. Any active accretion of ionized gas onto the massive (proto)stars is residual. The inferred cluster density is very large, comparable to that reported at similar scales in the Galactic Center. Stellar interactions are likely to occur within the next Myr.
description: Accepted to ApJ Letters, December 7 2022
UntitleVenous thromboembolism in Cancer Patients Undergoing Chemotherapy and Radiotherapy: A Meta-Analysisd
Creators: name: BHASKAR, SONU
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences

description: Venous thromboembolism (VTE) is a life-threatening complication that may exacerbate cancer prognosis. Whilst some studies indicate an increased risk of VTE in cancer patients undergoing chemo/radiation therapy (CRT), the prevalence estimates on the pooled prevalence of VTE in cancer patients undergoing CRT are not known. This study aims to calculate the pooled prevalence of VTE in CRT-treated cancer patients.
Phosphonate-anchored ligands for upconversion imaging nanoprobes
Creators: name: Midson, Megan Olga
Publisher: name: Imperial College London
Year: 2021

description: Upconversion nanoparticles (UCNPs) are a lanthanide-doped inorganic nanomaterial which absorb near-infrared radiation and emit visible light. For the last 20 years, researchers have been interested in using UCNPs as biomedical imaging agents. Their unique optical properties make them suitable for imaging within tissue, with UCNPs exhibiting resistance to photobleaching and having long luminescence lifetimes. In this work, novel UCNP-ligand systems were synthesised. Phosphonate ligands were designed and synthesised with the aim of achieving particular physical or photophysical properties. Work in this thesis begins with studying the interaction between the upconversion nanomaterial NaYF4:Yb,Er and the bound surface ligands. The stability of the nanoparticle-ligand interaction in an imaging agent in vivo determines the resistance to aggregation. The results presented in this work show bisphosphonic acids bind more strongly to the surface of UCNPs than carboxylic acids and this was determined by 1H NMR spectroscopy and by dynamic light scattering (DLS). Analyte sensing in vivo has the potential to provide information about biological systems in both healthy and disease environments. Phosphonate functionalised, pH-sensitive rhodamine ligands were synthesised and appended to the surface of UCNPs to create UCNP-based pH nanosensors. The nanoprobes were phase transferred using water soluble PEG-bisphosphonate ligands. It was found that poor emission intensity of UCNPs in aqueous systems was a common issue. To mitigate this, sensitizing cyanine ligands were synthesised. Nanosystems of NaYF4:Yb,Er UCNPs functionalised with cyanines were assembled and emission enhancement in these systems was achieved. In the past few years, there has been increasing interest in the synthesis of multimodal imaging agents. Finally, MR functionality was introduced to the nanoparticle imaging agents. Superparamagnetic iron oxide nanoparticles (SPIONs) were synthesised and various attempts were made at synthesising dual-modal MR/optical imaging agents by creating core-shell SPIONs-UCNP imaging agents.
Verification of the Thomson-Onsager reciprocity relation for spin caloritronics
Creators: name: Dejene, F. K.
name: Flipse, J.
name: van Wees, B. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the Thomson-Onsager relation between the spin-dependent Seebeck and spin-dependent Peltier effect. To maintain identical device and measurement conditions we measure both effects in a single Ni$_{80}$Fe$_{20}$/Cu/Ni$_{80}$Fe$_{20}$ nanopillar spin valve device subjected to either an electrical or a thermal bias. In the low bias regime, we observe similar spin signals as well as background responses, as required by the Onsager reciprocity relation. However, at large biases, deviation from reciprocity occurs due to dominant nonlinear contribution of the temperature dependent transport coefficients. By systematic modeling of these nonlinear thermoelectric effects and measuring higher order thermoelectric responses for different applied biases, we identify the transition between the two regimes as the point at which Joule heating start to dominate over Peltier heating. Our results signify the importance of local equilibrium for the validity of this phenomenological reciprocity relation.
description: 5 pages, 5 figures
Energy-recurrence Breakdown and Chaos in Disordered Fermi-Pasta-Ulam-Tsingou Lattices
Creators: name: Zulkarnain
name: Susanto, H.
name: Antonopoulos, C. G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 00-01, 99-00

description: In this paper, we consider the classic Fermi-Pasta-Ulam-Tsingou system as a model of interacting particles connected by harmonic springs with a quadratic nonlinear term (first system) and a set of second-order ordinary differential equations with variability (second system) that resembles Hamilton's equations of motion of the Fermi-Pasta-Ulam-Tsingou system. In the absence of variability, the second system becomes Hamilton's equations of motion of the Fermi-Pasta-Ulam-Tsingou system (first system). Variability is introduced to Hamilton's equations of motion of the Fermi-Pasta-Ulam-Tsingou system to take into account inherent variations (for example, due to manufacturing processes), giving rise to heterogeneity in its parameters. We demonstrate that a percentage of variability smaller than a threshold can break the well-known energy recurrence phenomenon and induce localization in the energy normal-mode space. However, percentage of variability larger than the threshold may make the trajectories of the second system blow up in finite time. Using a multiple-scale expansion, we derive analytically a two normal-mode approximation that explains the mechanism for energy localization and blow up in the second system. We also investigate the chaotic behavior of the two systems as the percentage of variability is increased, utilising the maximum Lyapunov exponent and Smaller Alignment Index. Our analysis shows that when there is almost energy localization in the second system, it is more probable to observe chaos, as the number of particles increases.
Entanglement witnesses for $d \otimes d$ systems and new classes of entangled qudit states
Creators: name: Chruściński, D.
name: Rutkowski, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a new class of entanglement witnesses for $d \ot d$ systems (two qudits). Our construction generalizes the one proposed recently by Jafarizadeh et al. for $d=3$ and $d=4$ on the basis of semidefinite linear programming. Moreover, we provide a new class of PPT entangled states detected by our witnesses which generalizes well known family of states constructed by Horodecki et al. for $d=3$.
title: Ανάπτυξη λογισμικού στη γλώσσα προγραμματισμού Python για την υλοποίηση διαδικασιών τυχαιοποίησης (απλή, στρωματοποιημένη και τετραγωνισμένη τυχαιοποίηση)
titleType: AlternativeTitle
title: Develop a software in Python for performing different types of randomization (simple, stratified and block randomization)
Creators: name: Τζιμούρτος, Βασίλειος
Publisher: name: University of Thessaly
Year: 2017
Subjects: subject: Στοχαστικές διαδικασίες
subject: Πιθανότητες
subject: Python (Γλώσσα προγραμματισμού ηλεκτρονικού υπολογιστή)

description: Σημείωση: διατίθεται συμπληρωματικό υλικό σε ξεχωριστό αρχείο.
Landscape analysis and Priority list of Adverse Events of Special Interest (AESI): Lassa fever
Creators: name: Law, Barbara
name: Sturkenboom, Miriam
Publisher: name: Zenodo
Year: 2023
Subjects: Toolbox
case definitions
guidance documents
Brighton Collaboration
CEPI

description: This document provides the methods and results of an updated landscape analysis and priority list of potential adverse events of special interest relevant to Lassa Fever vaccine trials.
 
description: The SPEAC Project is funded in whole by CEPI.
Coming of Age in Europe Across Generations
Creators: name: Berngruber, Anne
name: Bethmann, Arne
Publisher: name: Zenodo
Year: 2022
Subjects: SHARELIFE, life course research, de-standardization, transition markers, holistic view, European comparison, several birth cohorts

description: It is claimed almost unanimously in international youth research that patterns of the status passage from youth to adulthood have become more de-standardized over time. The aim of this paper is to provide a nuanced look at the transitional patterns from youth to adulthood. The main question is: How do life courses change across different generations? For this purpose, changes in the timing,
 ordering, (de)coupling and interquartile ranges of social, spatial and economic transition markers are described. We investigate, whether the patterns of these transitions into adulthood and their interrelations have changed across cohorts born up to 1935 until the mid-1960s for men and women. Using the SHARELIFE data collected in waves 3 (2009) and 7 (2017) as part of the SHARE study we are able to compare life courses of about 90,000 individuals aged 50+ all across Europe. For the analyses, we use event history analysis. The results of our paper indicate that social changes are different for the European country groups (Nordic countries, Baltic States, the Balkans, Western, Eastern and Southern Europe). There is no consistent pattern found for the whole of Europe. Therefore, the common practice to use the Western standard male biography as a comparative baseline—deviations from which would be labeled as ‘destandardization’—falls short. We find a large heterogeneity in transition patterns from youth to adulthood across European regions, which needs to be considered in further discussions of ‘de-standardization’ processes.
Can we constrain galaxy geometry parameters using spatially integrated SED fitting?
Creators: name: Qiu, Yisheng
name: Kang, Xi
name: Luo, Yu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Sophisticated spectral energy distribution (SED) models describe dust attenuation and emission using geometry parameters. This treatment is natural since dust effects are driven by the underlying star-dust geometry in galaxies. An example is the Starduster SED model, which divides a galaxy into a stellar disk, a stellar bulge, and a dust disk. This work utilises the Starduster SED model to study the efficacy of inferring geometry parameters using spatially integrated SED fitting. Our method fits the SED model to mock photometry produced by combining a semi-analytic model with the same SED model. Our fitting results imply that the disk radius can be constrained, while the inclination angle, dust disk to stellar disk radius ratio, bulge radius and intrinsic bulge to total luminosity ratio are unconstrained, even though 21 filters from UV to FIR are used. We also study the impact of S/N, finding that the increase of S/N (up to 80) brings limited improvements to the results. We provide a detailed discussion to explain these findings, and point out the implications for models with more general geometry.
description: 14 pages, 13 figures, Accepted for publication in MNRAS
La sesta direttiva antiriciclaggio e la sua attuazione nell’ordinamento italiano: alcune considerazioni
Creators: name: Sommella, Matteo
Publisher: name: Universita' degli Studi di Salerno
Year: 2022
Subjects: Judicial cooperation in criminal matters
Money laundering
Directive (EU) 2018/1673
Cryptocurrencies
Protection of the legal asset of the economic public order

description: This paper, after a brief reconstruction of the evolution of EU law on judicial cooperation in criminal matters and anti-money laundering, analyzes the main changes introduced with Directive (EU) 2018/1673 and critically examines the terms and limits of its implementation in the Italian legal system, focusing, in particular, on the connection between money laundering and the activities of organized crime, on some possible profiles of unconstitutionality of the implementing rule of the directive, on the growing use of cryptocurrencies as a tool to reinvest the proceeds of criminal activities and, in conclusion, on the need to enhance what appears to be, also in the light of the proposed analysis, the actual legal asset protected by these crimes: the economic public order.
description: Il presente elaborato, dopo una breve ricostruzione dell’evoluzione normativa del Diritto dell’Unione europea in materia di cooperazione giudiziaria penale e di antiriciclaggio, analizza le principali novità introdotte con la Direttiva (UE) 2018/1673 e ne esamina criticamente i termini e i limiti dell’attuazione nell’ordinamento giuridico italiano, soffermandosi, in particolare, sulla connessione tra il riciclaggio e l’attività della criminalità organizzata, su alcuni possibili profili di incostituzionalità della norma attuativa della direttiva, sul crescente utilizzo delle criptovalute come strumento per reinvestire i proventi di attività criminose e, in conclusione, sulla necessità di valorizzare quello che risulta essere, anche alla luce dell’analisi proposta, l’effettivo bene giuridico tutelato da questi reati: l’ordine pubblico economico.