bluuebunny/crossref_metadata_2025_split huggingface dataset:
Formation of Tetraselenodiarsenate(II) Anions in Ultra‐alkaline Medium
Authors: Albrecht Ralf , Jach Franziska , Ruck Michael 
Published: November 2021

AbstractSeO2 and As2O3 were reacted at 200 °C in in a potassium hydroxide hydroflux with a molar water‐base ratio n(H2O) : n(KOH)=1.8. Arsenate(III) disproportionates under these conditions into arsenate(V) and elemental arsenic. The reduction also yielded tetraselenodiarsenate(II) anions, which turned the solution yellow and precipitated at room temperature as plate‐shaped crystals of K4(As2Se4) ⋅ 2H2O. The unexpected redox reaction as well as the formation of a hygroscopic compound in an aqueous solution are attributed to a strongly reduced activity of water in ultra‐alkaline media. K4(As2Se4) ⋅ 2H2O crystallizes in the orthorhombic space group Cmce with lattice parameters a=784.78(3), b=1027.76(4) and c=1750.63(7) pm at 100 K. The (As2Se4)4− anion has C2h symmetry and an As−As bond length of 245.3(1) pm. The water molecules are part of infinite zig‐zag chains
[K(H2O)2/2]+ and form hydrogen bonds to neighboring selenium atoms.
Strongly coupled QFT dynamics via TQFT coupling
Authors: Ünsal Mithat 
Published: November 2021

Abstract
We consider a class of quantum field theories and quantum mechanics, which we couple to ℤN topological QFTs, in order to classify non-perturbative effects in the original theory. The ℤN TQFT structure arises naturally from turning on a classical background field for a ℤN 0- or 1-form global symmetry. In SU(N) Yang-Mills theory coupled to ℤN TQFT, the non-perturbative expansion parameter is exp[−SI/N] = exp[−8π2/g2N] both in the semi-classical weak coupling domain and strong coupling domain, corresponding to a fractional topological charge configurations. To classify the non-perturbative effects in original SU(N) theory, we must use PSU(N) bundle and lift configurations (critical points at infinity) for which there is no obstruction back to SU(N). These provide a refinement of instanton sums: integer topological charge, but crucially fractional action configurations contribute, providing a TQFT protected generalization of resurgent semi-classical expansion to strong coupling. Monopole-instantons (or fractional instantons) on T3 × $$ {S}_L^1 $$

S
L
1

can be interpreted as tunneling events in the ’t Hooft flux background in the PSU(N) bundle. The construction provides a new perspective to the strong coupling regime of QFTs and resolves a number of old standing issues, especially, fixes the conflicts between the large-N and instanton analysis. We derive the mass gap at θ = 0 and gaplessness at θ = π in $$ \mathbbm{CP} $$
CP
1 model, and mass gap for arbitrary θ in $$ \mathbbm{CP} $$
CP
N−1, N ≥ 3 on ℝ2.
Relativistic spin hydrodynamics with torsion and linear response theory for spin relaxation
Authors: Hongo Masaru , Huang Xu-Guang , Kaminski Matthias , Stephanov Mikhail , Yee Ho-Ung 
Published: November 2021

Abstract
Using the second law of local thermodynamics and the first-order Palatini formalism, we formulate relativistic spin hydrodynamics for quantum field theories with Dirac fermions, such as QED and QCD, in a torsionful curved background. We work in a regime where spin density, which is assumed to relax much slower than other non-hydrodynamic modes, is treated as an independent degree of freedom in an extended hydrodynamic description. Spin hydrodynamics in our approach contains only three non-hydrodynamic modes corresponding to a spin vector, whose relaxation time is controlled by a new transport coefficient: the rotational viscosity. We study linear response theory and observe an interesting mode mixing phenomenon between the transverse shear and the spin density modes. We propose several field-theoretical ways to compute the spin relaxation time and the rotational viscosity, via the Green-Kubo formula based on retarded correlation functions.
Equilibrium of Surfaces in a Vertical Force Field
Authors: Martínez Antonio , Martínez-Triviño A. L. 
Published: November 2021

AbstractIn this paper, we study $$\varphi $$
φ
-minimal surfaces in $$\mathbb {R}^3$$

R

3

when the function $$\varphi $$
φ
is invariant under a two-parametric group of translations. Particularly those which are complete graphs over domains in $$\mathbb {R}^2$$

R

2

. We describe a full classification of complete flat-embedded $$\varphi $$
φ
-minimal surfaces if $$\varphi $$
φ
is strictly monotone and characterize rotational $$\varphi $$
φ
-minimal surfaces by its behavior at infinity when $$\varphi $$
φ
has a quadratic growth.
The Lagrange–Charpit Theory of the Hamilton–Jacobi Problem
Authors: Álvarez Javier Pérez 
Published: November 2021

AbstractThe Lagrange–Charpit theory is a geometric method of determining a complete integral by means of a constant of the motion of a vector field defined on a phase space associated to a nonlinear PDE of first order. In this article, we establish this theory on the symplectic structure of the cotangent bundle $$T^{*}Q$$

T

∗

Q

of the configuration manifold Q. In particular, we use it to calculate explicitly isotropic submanifolds associated with a Hamilton–Jacobi equation.
Using contrast-enhanced CT and non-contrast-enhanced CT to predict EGFR mutation status in NSCLC patients—a radiomics nomogram analysis
Authors: Yang Xiaoyan , Liu Min , Ren Yanhong , Chen Huang , Yu Pengxin , Wang Siyi , Zhang Rongguo , Dai Huaping , Wang Chen 
Published: November 2021

Abstract
Objectives
To develop and validate a general radiomics nomogram capable of identifying EGFR mutation status in non-small cell lung cancer (NSCLC) patients, regardless of patient with either contrast-enhanced CT (CE-CT) or non-contrast-enhanced CT (NE-CT).

Methods
A total of 412 NSCLC patients were retrospectively enrolled in this study. Patients’ radiomics features not significantly different between NE-CT and CE-CT were defined as general features, and were further used to construct the general radiomics signature. Fivefold cross-validation was used to select the best machine learning algorithm. Finally, a general radiomics nomogram was developed using general radiomics signature, and clinical and radiological characteristics. Two groups of data collected at different time periods were used as two test sets to access the discrimination and clinical usefulness. Area under the receiver operating characteristic curve (ROC-AUC) was applied to performance evaluation.

Result
The general radiomics signature yielded the highest AUC of 0.756 and 0.739 in the two test sets, respectively. When applying to same type of CT, the performance of general radiomics signature was always similar to or higher than that of models built using only NE-CT or CE-CT features. The general radiomics nomogram combining general radiomics signature, smoking history, emphysema, and ILD achieved higher performance whether applying to NE-CT or CE-CT (test set 1, AUC = 0.833 and 0.842; test set 2, AUC = 0.839 and 0.850).

Conclusions
Our work demonstrated that using general features to construct radiomics signature and nomogram could help identify EGFR mutation status of NSCLC patients and expand its scope of clinical application.

Key Points
• General features were proposed to construct general radiomics signature using different types of CT of different patients at the same time to identify EGFR mutation status of NSCLC patients.
• The general radiomics nomogram based on general radiomics signature, and clinical and radiological characteristics could identify EGFR mutation status of patients with NSCLC and outperformed the general radiomics signature.
• The general radiomics nomogram had a wider scope of clinical application; no matter which of NE-CT and CE-CT the patient has, its EGFR mutation status could be predicted.
Formation pathways of oriented magnetite micro-inclusions in plagioclase from oceanic gabbro
Authors: Bian Ge , Ageeva Olga , Rečnik Aleksander , Habler Gerlinde , Abart Rainer 
Published: November 2021

AbstractPlagioclase hosted needle- and lath-shaped magnetite micro-inclusions from oceanic gabbro dredged at the mid-Atlantic ridge at 13° 01–02′ N, 44° 52′ W were investigated to constrain their formation pathway. Their genesis is discussed in the light of petrography, mineral chemistry, and new data from transmission electron microscopy (TEM). The magnetite micro-inclusions show systematic crystallographic and shape orientation relationships with the plagioclase host. Direct TEM observation and selected area electron diffraction (SAED) confirm that the systematic orientation relations are due to the alignment of important oxygen layers between the magnetite micro-inclusions and the plagioclase host, a hypothesis made earlier based on electron backscatter diffraction data. Precipitation from Fe-bearing plagioclase, which became supersaturated with respect to magnetite due to interaction with a reducing fluid, is inferred to be the most likely formation pathway. This process probably occurred without the supply of Fe from an external source but required the out-diffusion of oxygen from the plagioclase to facilitate partial reduction of the ferric iron originally contained in the plagioclase. The magnetite micro-inclusions contain oriented lamellae of ilmenite, the abundance, shape and size of which indicate high-temperature exsolution from Ti-rich magnetite constraining the precipitation of the magnetite micro-inclusions to temperatures in excess of ~ 600 °C. This is above the Curie temperature of magnetite, and the magnetic signature of the magnetite-bearing plagioclase grains must, therefore, be considered as the thermoremanent magnetization.
Experience-dependent plasticity in early stations of sensory processing in mature brains: effects of environmental enrichment on dendrite measures in trigeminal nuclei
Authors: Martin Yasmina B. , Negredo Pilar , Avendaño Carlos 
Published: November 2021

AbstractNervous systems respond with structural changes to environmental changes even in adulthood. In recent years, experience-dependent structural plasticity was shown not to be restricted to the cerebral cortex, as it also occurs at subcortical and even peripheral levels. We have previously shown that two populations of trigeminal nuclei neurons, trigeminothalamic barrelette neurons of the principal nucleus (Pr5), and intersubnuclear neurons in the caudal division of the spinal trigeminal nucleus (Sp5C) that project to Pr5 underwent morphometric and topological changes in their dendritic trees after a prolonged total or partial loss of afferent input from the vibrissae. Here we examined whether and what structural alterations could be elicited in the dendritic trees of the same cell populations in young adult rats after being exposed for 2 months to an enriched environment (EE), and how these changes evolved when animals were returned to standard housing for an additional 2 months. Neurons were retrogradely labeled with BDA delivered to, respectively, the ventral posteromedial thalamic nucleus or Pr5. Fully labeled cells were digitally reconstructed with Neurolucida and analyzed with NeuroExplorer. EE gave rise to increases in dendritic length, number of trees and branching nodes, spatial expansion of the trees, and dendritic spines, which were less pronounced in Sp5C than in Pr5 and differed between sides. In Pr5, these parameters returned, but only partially, to control values after EE withdrawal. These results underscore a ubiquity of experience-dependent changes that should not be overlooked when interpreting neuroplasticity and developing plasticity-based therapeutic strategies.
Deep learning assisted cognitive diagnosis for the D-Riska application
Authors: Cuerda Cristian , Zornoza Alejandro , Gallud Jose A. , Tesoriero Ricardo , Ayuso Dulce Romero 
Published: November 2021

AbstractIn this article, we expose a system developed that extends the Acquired Brain Injury (ABI) diagnostic application known as D-Riska with an artificial intelligence module that supports the diagnosis of ABI enabling therapists to evaluate patients in an assisted way. The application is in charge of collecting the data of the diagnostic tests of the patients, and due to a multi-class Convolutional Neural Network classifier (CNN), it is capable of making predictions that facilitate the diagnosis and the final score obtained in the test by the patient. To find out the best solution to this problem, different classifiers are used to compare the performance of the proposed model based on various classification metrics. The proposed CNN classifier makes predictions with 93 % of Accuracy, 94 % of Precision, 91 %, of Recall and 92% of F1-Score.
The societal embeddedness of records: teaching the meaning of the fourth dimension of the Records Continuum Model in different cultural contexts
Authors: Frings-Hessami Viviane 
Published: November 2021

AbstractThe Continuum concept of pluralisation is often misunderstood. This paper aims to explain how records are embedded in the society that created them from the time of their creation and how they can be further embedded throughout their lifespan by adding metadata to them, placing them in context, making them accessible to those who will need them in the future and potentially sharing them with the broader society according to societal rules. The author proposes to use the concept of societal embeddedness, which indicates that pluralisation is not just about sharing in the future, but also about incorporating societal expectations in records and recordkeeping systems, to help explain the concept of pluralisation. She shows how using simple examples from everyday life and discussing the societal context of the creation and use of records can help explain Records Continuum concepts, and in particular the concept of pluralisation, to students from non-English speaking backgrounds.
Risk in trustworthy digital repository audit and certification
Authors: Frank Rebecca D. 
Published: November 2021

AbstractRisk is a foundational concept in digital preservation. While it has been examined from technical, economic, and organizational perspectives, I argue that it is also a social phenomenon. In this study I report on the results from 42 interviews with stakeholders in the Trustworthy Repositories Audit & Certification (TRAC) system, and analysis of documents relating to the ISO 16363 standard in order to examine how standard developers, auditors, and repository staff members understand the concept of risk for digital repositories. The results of this research demonstrate that members of these three stakeholder groups identified risk in the TRAC audit and certification process in terms of specific potential threats or sources of risk, which I have organized into five main categories: finance, legal, organizational governance, repository processes, and technical infrastructure. While standard developers, auditors, and repository staff generally shared an understanding of the major sources of potential risk that face digital repositories, they disagreed about whether and how these risks can be mitigated and how mitigation can be proven. Individuals who were more removed from the day-to-day work of the repositories undergoing an audit were more likely to accept well-documented risk identification and mitigation strategies as sufficient evidence of trustworthiness, while repository staff were skeptical that documentation was sufficient evidence of risk assessment and mitigation and thus questioned whether this would translate to actual trustworthiness for long-term digital preservation.
Swine at the chancery and locks to chests: dispersal, destruction, and accumulation of Sicily’s financial archives in the later Middle Ages
Authors: Silvestri Alessandro 
Published: November 2021

AbstractIn the last twenty years, anthropologists, archivists, and historians have dedicated increased attention to the study of archives as objects of research themselves. In so doing, scholars have predominantly examined the emergence and transformations of archives during the early modern age, focusing mostly on political and diplomatic depositories. They have tended to neglect financial archives, which is unfortunate, as—alongside judicial archives—they were probably the largest documentary repositories of the pre-modern world and those that first faced the problem of managing huge masses of documentation. This article discusses the formation and development of the Kingdom of Sicily’s financial archives in the later Middle Ages, arguing that this repository evolved into a collecting archive by the early fifteenth-century, when it preserved not only the records and accounts produced by the central financial administration, but also those from a number of territorial officers and magistracies. This archival turn, I suggest, originated from the fact that the Crown of Aragon’s rulers constantly needed increased incomes to fund bureaucracies and warfare and exercise patronage, and thus needed financial information organized, at hand, and under their control. After briefly discussing the emergence of the financial archive in the thirteenth-century, this essay traces the Crown’s attempts to create a stable repository for storing financial records and accounts and its continuous struggles to prevent documentation from being scattered and dispersed. Finally, it examines the successful strategy that King Alfonso V of Aragon (1416–58), called the Magnanimous, pursued to organize financial documentation and concentrate records and accounts produced by financial administration into a stable building. The essay pays particular attention to the material aspects of preserving records, e.g., the restoration of buildings, construction of chests, and preparation of secure locks that were integral to the emergence of collecting archives for financial documents in the later Middle Ages.
Dogmas of Effective Field Theory: Scheme Dependence, Fundamental Parameters, and the Many Faces of the Higgs Naturalness Principle
Authors: Rosaler Joshua 
Published: November 2021

AbstractThe earliest formulation of the Higgs naturalness argument has been criticized on the grounds that it relies on a particular cutoff-based regularization scheme. One response to this criticism has been to circumvent the worry by reformulating the naturalness argument in terms of a renormalized, regulator-independent parametrization. An alternative response is to deny that regulator dependence poses a problem for the naturalness argument, because nature itself furnishes a particular, physically correct regulator for any effective field theory (EFT) in the form of that EFT’s physical cutoff, together with an associated set of bare parameters that constitute the unique physically preferred “fundamental parameters” of the EFT. Here, I argue that both lines of defense against the initial worry about regulator dependence are flawed. I argue that reformulation of the naturalness argument in terms of renormalized parameters simply trades dependence on a particular regularization scheme for dependence on a particular renormalization scheme, and that one or another form of scheme dependence afflicts all formulations of the Higgs naturalness argument. Concerning the second response, I argue that the grounds for suspending the principle of regularization or renormalization scheme independence in favor of a physically preferred parametrization are thin; the assumption of a physically preferred parametrization, whether in the form of bare “fundamental parameters” or renormalized “physical parameters,” constitutes a theoretical idle wheel in generating the confirmed predictions of established EFTs, which are invariably scheme-independent. I highlight certain features of the alternative understanding of EFTs, and the EFT-based approach to understanding the foundations of QFT, that emerges when one abandons the assumption of a physically preferred parametrization. I explain how this understanding departs from several dogmas concerning the mathematical formulation and physical interpretation of EFTs in high-energy physics.
Lake browning impacts community structure and essential fatty acid content of littoral invertebrates in boreal lakes
Authors: Kesti Petri , Hiltunen Minna , Strandberg Ursula , Vesterinen Jussi , Taipale Sami , Kankaala Paula 
Published: November 2021

AbstractMany lakes in the northern hemisphere are browning due to increasing concentrations of terrestrial dissolved organic carbon (DOC). The consequences of lake browning to littoral invertebrates, however, are not fully understood. We analyzed community structure and fatty acid (FA) profiles of littoral invertebrates in humic (DOC-rich) and clear-water lakes in Eastern Finland. We found higher abundance of chironomids (Diptera: Chironomidae) in humic compared to clear-water lakes, whereas stoneflies (Plecoptera) and mayflies (Ephemeroptera: Baetidae) were more abundant in clear-water lakes. Taxon explained 65% of the differences in the FA composition of littoral invertebrates. However, the proportion and content of polyunsaturated FAs of several taxa were significantly higher in clear-water lakes compared to humic lakes. Our results reveal differences in both community structure and nutritional quality of littoral invertebrates for fish between humic and clear-water lakes.
Analyses of Early Sunspot Records by Jean Tarde (1615 – 1617) and Jan Smogulecki (1621 – 1625)
Authors: Carrasco V. M. S. , Gallego M. C. , Villalba Álvarez J. , Vaquero J. M. , Hayakawa H. 
Published: November 2021

AbstractJean Tarde and Jan Smogulecki carried out sunspot observations in the 1610s and 1620s at the dawn of the telescopic era. We analysed their original observational records to revise their sunspot-group numbers in the existing database. In this study, we provide a new counting as a basis for future scientific discussions. Furthermore, we compared Smogulecki’s sunspot observations with those of Scheiner and Schönberger on the same observation days. We also detected a big sunspot group on 2 – 3 February 1622 in Smogulecki’s sunspot drawings and estimated its area to be approximately 1600 millionths of the solar disc. In addition, we measured the sunspot positions in Tarde’s and Smogulecki’s sunspot drawings to construct a butterfly diagram for this early period.
Evaluating cloud interactions with costs and SLAs
Authors: Bernal Adrián , Cambronero M. Emilia , Núñez Alberto , Cañizares Pablo C. , Valero Valentín 
Published: November 2021

AbstractIn this paper, we investigate how to improve the profits in cloud infrastructures by using price schemes and analyzing the user interactions with the cloud provider. For this purpose, we consider two different types of client behavior, namely regular and high-priority users. Regular users do not require a continuous service, and they can wait to be attended to. In contrast, high-priority users require a continuous service, e.g., a 24/7 service, and usually need an immediate answer to any request. A complete framework has been implemented, which includes a UML profile that allows us to define specific cloud scenarios and the automatic transformations to produce the code for the cloud simulations in the Simcan2Cloud simulator. The engine of Simcan2Cloud has also been modified by adding specific SLAs and price schemes. Finally, we present a thorough experimental study to analyze the performance results obtained from the simulations, thus making it possible to draw conclusions about how to improve the cloud profit for the cloud studied by adjusting the different parameters and resource configuration.