cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
De novo synthesis of 2,2-bis(dimethylamino)-3-alkyl or benzyl 2,3-dihydroquinazolin-4(1H)-one compounds
Creators: name: Chikkanti Jaganmohan
name: Vinay Kumar K., P.
name: Sandeep Reddy, G.
name: Mohanty, Sandeep
name: Jaydeep Kumar
name: Venkateswara Rao, B.
name: Krishnaji Tadiparthi
name: Akula Raghunadh
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: A new versatile and efficient strategy for the synthesis of 2,2-bis(dimethylamino)-3-alkyl or benzyl 2,3-dihydroquinazoline-4(1H)-one compounds has been developed by one-pot multicomponent reaction with isatoic anhydride, amines followed by in situ-generated Vilsmeier reagent. The reaction has also been studied with different amines and solvents.
Gravitation Due to Scalar Potentials and Black Holes
Creators: name: Titleman, Mark
Publisher: name: Zenodo
Year: 2024

description: This paper argues that the universe possesses two scalar potentials similar to those proposed by E.T. Whittaker in which waveforms travel longitudinally. It is proposed that these scalar potentials form through black holes, creating normal transverse electromagnetic radiation as well as gravity. This opens up new avenues for understanding the universe and black holes while applying parsimonious explanations to dark matter theories. Charge is envisioned as a widespread mechanical intermediate in the form of the scalar potentials, thus implying that the universe is similar to an atom. An important speed is determined and the critical MOND acceleration is derived using the Rydberg constant.
Organocatalytic mediated green approach: A versatile new L-valine promoted synthesis of diverse and densely functionalized 2-amino-3-cyano-4H-pyrans
Creators: name: Tiwari, Jyoti
name: Swastika Singh
name: Saquib, Mohammad
name: Tufail, Fatima
name: Sharma, Amit Kumar
name: Shailesh Singh
name: Singh, Jaya
name: Jagdamba Singh
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 60506 Virology

description: The discovery of a new L-valine promoted facile and versatile green synthesis of diversified 2-amino-3-cyano-4H-pyrans using a one pot multicomponent-tandem reaction of aromatic aldehydes, malononitrile, and diverse electron-rich enolizable carbonyl compounds is described. To the best of our knowledge this is the first report on the use of native L-valine as a catalyst in organic synthesis. Environmental friendly, mild reaction conditions, use of easily available inexpensive starting materials, short reaction time, excellent yields, high atom economy, and recyclability of organocatalyst are the major advantages of the disclosed protocol.
The Current Usage of Functional Near-Infrared Spectroscopy Among Parkison Disease Research and Future Applications: A Scoping Review
Creators: name: Chan, Chi Fung
name: Chen, Ming
name: Yushan Feng
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Medicine and Health Sciences
subject: PD
subject: fnirs
subject: functional near-infrared spectrometry
subject: parkinson's disease

description: Providing a comprehensive map on the current Usage of Functional Near-Infrared Spectroscopy Among Parkison Disease Research and informs Future Applications
Composite symmetry protected topological order and effective models
Creators: name: Nietner, A.
name: Krumnow, C.
name: Bergholtz, E. J.
name: Eisert, J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Strongly correlated quantum many-body systems at low dimension exhibit a wealth of phenomena, ranging from features of geometric frustration to signatures of symmetry-protected topological order. In suitable descriptions of such systems, it can be helpful to resort to effective models which focus on the essential degrees of freedom of the given model. In this work, we analyze how to determine the validity of an effective model by demanding it to be in the same phase as the original model. We focus our study on one-dimensional spin-1/2 systems and explain how non-trivial symmetry protected topologically ordered (SPT) phases of an effective spin 1 model can arise depending on the couplings in the original Hamiltonian. In this analysis, tensor network methods feature in two ways: On the one hand, we make use of recent techniques for the classification of SPT phases using matrix product states in order to identify the phases in the effective model with those in the underlying physical system, employing Kuenneth's theorem for cohomology. As an intuitive paradigmatic model we exemplify the developed methodology by investigating the bi-layered delta-chain. For strong ferromagnetic inter-layer couplings, we find the system to transit into exactly the same phase as an effective spin 1 model. However, for weak but finite coupling strength, we identify a symmetry broken phase differing from this effective spin-1 description. On the other hand, we underpin our argument with a numerical analysis making use of matrix product states.
description: 13 pages, 6 figures
Drug-Disease Relationship Analysis
Creators: name: Janet, Smith
Publisher: name: Zenodo
Year: 2024

description: "UC(Area under ROC curve) and AUPR (Area under the precision-recall curve) are popular metrics for evaluating prediction models. Since drug-disease pairs without associations are much more than known drug-disease associations, AUPR is adopted as the primary metric, which takes into recall and precision. Several binary classification metrics are also considered, i.e. sensitivity(SN, also known as recall), specificity (SP), accuracy(ACC) and F-measure (F).

The increasing cost and duration of new drug development make the repositioning of existing drugs using computational methods a significant focus of medical or biological research. CD ComputaBio has the full capability set to help you with your In Silico Drug Discovery needs. Our services can be contracted under confidentiality terms as well as other specific conditions agreed with the customer. "
[3 + 2] Cycloaddition promoted by zinc oxide nanoparticles anchored on reduced graphene oxide using green solvent
Creators: name: Thanaraj Clarina
name: Velladurai Rama
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Space Science
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Plasma Physics

description: ZnO anchored on RGO-catalyzed [3 + 2] cycloaddition of nitriles and sodium azide in the synthesis of 5-substituted 1H-tetrazoles in water is an efficient and simple protocol with low catalyst loading under reflux condition. It is applied to a wide range of substrates with an excellent yield, simple workup procedure, recovery, and reusability of catalyst with consistent activity and high turnover number. It is proposed that the functional groups present in RGO surface are effective for preventing the aggregation of catalytically active ZnO species during the reaction. Moreover, the excellent performance of ZnO–RGO nanocomposite is ascribed to the excellent dispersity of catalyst in water, hydrophilic nature of the RGO for the accumulation of organic substrates in water, and the “Breslow effect.”
Efficient synthesis of symmetrical bisamides catalyzed by reusable hydroxyapatite
Creators: name: Gurusamy Ramachandran
name: Ramachandran Saraswathi
name: Mayilvasagam Kumarraja
name: Palsamy Govindaraj
name: Thirumeni Subramanian
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biochemistry
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Efficient synthesis of symmetrical bisamides is achieved by hydroxyapatite catalyst. Hydroxyapatite catalyzes the reaction between aldehydes and amides to afford bisamides at reflux conditions in 87–95% yields in acetonitrile medium. The catalyst is readily recovered and reused at least three times without loss in its catalytic activity. This method is noteworthy that, symmetrical bisamides are synthesized by fast, simple, effective, and environmentally benign heterogeneous protocol.
Sugarcane bagasse valorization to xylitol: techno-economic and life cycle assessment
Creators: name: Shaji, Arun
name: Shastri, Yogendra
name: Kumar, Vinod
name: RANADE, VIVEK
name: Hindle, Neil
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences

description: A detailed techno-economic analysis and life cycle assessment (LCA) of a novel bio-refinery that produces xylitol from sugarcane bagasse are provided. The proposed process includes dilute acid pretreatment in pressurized conditions followed by fermentation (upstream section). The fermentation broth is then sent for separation and purification to the downstream section. Calculations are performed for a plant with 4 t/h of dry bagasse throughput. With a fermentation yield of 0.54 g xylitol per g of xylose, the plant produced 437.4 kg/h of xylitol. Upstream data are adapted from experimental studies, while ASPEN PLUS® flowsheet simulation is used to obtain data for the downstream section. The xylitol production facility is assumed to be annexed to an existing sugar mill in India. The total utility requirement in the process is reduced using heat integration strategies. Cradle-to-gate scope is considered for the LCA and 1 kg of xylitol is taken as the functional unit. The product cost of xylitol is calculated to be 230 INR/kg (US$3.17/kg). For a 4 year payback period, the selling price of xylitol must be 450 INR/kg (US$6.2/kg). The fermentation and pretreatment sections are the major components of the product cost. The LCA results show that the life cycle greenhouse gas emissions are 2.759 kg CO2 eq. per kg xylitol. The electricity requirement within the plant is identified as the major source of greenhouse gas emissions, and reduction of fermentation duration is identified as a key factor. The results identify opportunities to improve the process from an economic as well as an environmental standpoint
Cosmology of Massive Gravity and its Extensions
Creators: name: Hinterbichler, Kurt
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the status of the theory of dRGT massive gravity, and some of its extensions, as applied to cosmology and the cosmological constant problem.
description: 10 pages. Contribution to proceedings of the 51st Rencontres de Moriond, Cosmology Session
First-principles calculations of the superconducting properties in Li-decorated monolayer graphene within the anisotropic Migdal-Eliashberg formalism
Creators: name: Zheng, Jing-Jing
name: Margine, E. R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The ab initio anisotropic Migdal-Eliashberg formalism has been used to examine the pairing mechanism and the nature of the superconducting gap in the recently discovered lithium-decorated monolayer graphene superconductor. Our results provide evidence that the superconducting transition in Li-decorated monolayer graphene can be explained within a standard phonon-mediated mechanism. We predict a single anisotropic superconducting gap and a critical temperature Tc = 5.1-7.6 K, in very good agreement with the experimental results.
description: 6 pages, 4 figures
Heteropoly acid supported on activated natural clay-catalyzed synthesis of 3,4-dihydropyrimidinones/thiones through Biginelli reaction under solvent-free conditions
Creators: name: Karuppaiah Selvakumar
name: Thangamariyappan Shanmugaprabha
name: Kumaresan, Murugan
name: Sami, Ponnusamy
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biophysics
subject: Biochemistry
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Dihydropyrimidinones/thiones (DHPM’s) have been prepared by one-pot condensation of methyl acetoacetate, aldehydes, urea/thiourea in the presence of heteropoly-11-tungsto-1-vanadophosphoric acid, H4[PVW11O40] · 32H2O, (HPV) supported on activated natural clay (HPVAC) under solvent-free reaction condition have been proposed. The DHPM derivatives were identified through elemental analysis and melting point measurements and characterized by FT-IR, 1H-NMR, 13C-NMR spectroscopic methods.
Study on single-channel signals of water Cherenkov detector array for the LHAASO
Creators: name: Li, Huicai
name: Yao, Zhiguo
name: Chen, Mingjun
name: Yu, Chunxu
name: Zha, Min
name: Wu, Hanrong
name: Gao, Bo
name: Wang, Xiaojie
name: Liu, Jinyan
name: Liao, Wenying
name: Huang, Dezhi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Large High Altitude Air Shower Observatory (LHAASO) is planned to be built at Daocheng, Sichuan Province, China. The water Cherenkov detector array (WCDA), with an area of 78,000 m2 and capacity of 350,000 tons of purified water, is one of the major components of the LHAASO project. A 9-cell detector prototype array has been built at the Yangbajing site, Tibet, China to comprehensively understand the water Cherenkov technique and investigate the engineering issues of WCDA. In this paper, the rate and charge distribution of single-channel signals are evaluated using a full detail Monte Carlo simulation. The results are discussed and compared with the prototype array.
The Role of Fungal and Bacterial Nasal Communities in Bovine Respiratory Disease
Creators: name: Martinez, Ruth Eunice Centeno
Publisher: name: Purdue University Graduate School
Year: 2024
Subjects: classificationCode: 309999
subject: Other agricultural, veterinary and food sciences not elsewhere classified

description: ABSTRACTBovine Respiratory Disease (BRD) poses a significant challenge in the dairy and beef industry, contributing to high mortality, morbidity, and economic costs. Extensive research has aimed to enhance BRD diagnosis, focusing on various factors such as predisposition, environment, and epidemiology. While diverse methods have been developed for BRD detection, including clinical signs, behavioral changes, lung consolidation assessment via ultrasonography, and molecular techniques for microbiome analysis, accurate diagnosis remain inconsistent. Notably, many studies lack exploration of microbial interactions (fungi, viruses, and bacteria) within BRD-affected animals compared to healthy ones. Moreover, the impact of age, disease, and antibiotic treatment on the microbiome community remains understudied. Thus, additional analysis is crucial to understand the relationships between these factors and BRD development. This dissertation is divided into two parts, each addressing specific conditions. The first part focuses on characterizing the nasopharyngeal (NP) microbiome of dairy calves, pre-weaned and post-transported, and those diagnosed with BRD within the first two weeks of life. The objective is to identify NP microbiome changes as indicators of disease development, considering antibiotic treatment effects on NP alpha and beta diversity. The second part delves into characterizing the fungal and bacterial nasal cavity among BRD-affected and healthy cattle within the same pen. This section, presented in three chapters, explores the bovine nasal mycobiome in beef cattle, as well as the nasal microbiome in both dairy and beef cattle. The overarching goals of these studies are to evaluate differences in the nasal mycobiome or microbiome community between BRD-affected and healthy cattle, focusing on alpha, beta, and community compositions as potential disease indicators. Additionally, the aim is to determine if BRD-affected cattle exhibit higher abundance of BRD-pathobionts (fungi and bacteria) in the nasal cavity compared to healthy pen-mates. In conclusion, findings from this research emphasize the importance of incorporating both mycobiome and microbiome analyses in understanding BRD development. Future studies should consider geographical influences on nasal microbiome structure, highlighting the need for separate investigations in dairy and beef calves due to breed variations. Ultimately, studying mycobiome and microbiome ecology offers insights into microbial transitions from commensal to pathogenic farms in the bovine upper respiratory tract, supporting advancements in BRD prevention or mitigation strategies.
title: ADCO, Cartulaire de l'abbaye de Cîteaux dit Cartulare Antiquum t.2 (2e moitié XIIIe siècle), Cart. 167 (11 H 67), f. 0096r
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2010
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire de l'abbaye de Cîteaux dit Cartulare Antiquum t.2 (2e moitié XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 167 (11 H 67), f. 0096r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de l'abbaye de Cîteaux dit Cartulare Antiquum t.2 (2e moitié XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 167 (11 H 67), f. 0096r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Note Illustrative della Carta geologica d'Italia alla scala 1:50.000 F. 199 Parma Sud, Servizio Geologico d'Italia - ISPRA
Creators: name: Di Dio, G.
name: Lasagna, S.
name: Martini, A.
name: Zanzucchi, G.
Publisher: name: INFN Open Access Repository
Year: 2005
Subjects: carta geologica, Parma Sud, Emilia-Romagna, Pianura Padana, CARG, stratigrafia, tettonica, sottosuolo, geological map, stratigraphy, tectonics, subsurface

description: Note illustrative redatte per il Foglio geologico n. 199 Parma Sud della Carta Geologica d'Italia alla scala 1:50.000. 180 pp.
Synthesis of “L-cysteine–graphene oxide” hybrid by new methods and elucidation of its uptake properties for Hg(II) ion
Creators: name: Daneshmand, Maryam
name: Outokesh, Mohammad
name: Akbari, Ahmad
name: Mohammadreza Kosari
name: Tayyebi, Ahmad
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: This study introduces two new, simple, and scalable methods for synthesis of “cysteine–graphene oxide” hybrid, namely nucleophilic and covalent methods. Produced adsorbents could uptake 500 and 600 mg Hg2+/g, respectively, which are larger than capacities of most of the commercial adsorbents. By means of different instrumental techniques, chemical structures of the obtained graphene products were disclosed, and two pertinent mechanisms for their formations were suggested. Time for attaining uptake equilibrium for nucleophilic/covalent samples was 30 min/150 min, and kinetics was controlled by liquid film resistance/chemical reaction mechanisms, respectively. High selectivity and good regenerability are other key features of the prepared adsorbents.
Spin dynamics of antiferromagnets in the presence of a homogeneous magnetization
Creators: name: Kirkpatrick, T. R.
name: Belitz, D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We use general hydrodynamic equations to determine the long-wavelength spin excitations in isotropic antiferromagnets in the presence of a homogeneous magnetization. The latter may be induced, such as in antiferromagnets in an external magnetic field, or spontaneous, such as in ferrimagnetic or canted phases that are characterized by the coexistence of antiferromagnetic and ferromagnetic order. Depending on the physical situation, we find propagating spin waves that are gapped in some cases and gapless in others, diffusive modes, or relaxational modes. The excitation spectra turn out to be qualitatively different depending on whether or not the homogeneous magnetization is a conserved quantity. The results lay the foundation for a description of a variety of quantum phase transitions, including the transition from a ferromagnetic metal to an antiferromagnetic one, and the spin-flop transitions that are observed in some antiferromagnets. They also are crucial for incorporating weak-localization and Altshuler-Aronov effects into the descriptions of quantum phases in both clean and disordered magnetic metals.
description: 18pp, no figures
The automorphism group of projective norm graphs
Creators: name: Bayer, Tomas
name: Mészáros, Tamás
name: Rónyai, Lajos
name: Szabó, Tibor
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Norm graphs
subject: Finite fields
subject: Norm equations
subject: Automorphism group
subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik

description: The projective norm graphs are central objects to extremal combinatorics. They appear in a variety of contexts, most importantly they provide tight constructions for the Turán number of complete bipartite graphs Kt,s with s>(t−1)!. In this note we deepen their understanding further by determining their automorphism group.
Additional file 1 of Investigating the molecular control of deer antler extract on articular cartilage
Creators: name: Yao, Baojin
name: Zhou, Zhenwei
name: Zhang, Mei
name: Leng, Xiangyang
name: Zhao, Daqing
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1.
Spin-orbit coupling in {Mo$_3$S$_7$(dmit)$_3$}
Creators: name: Jacko, A. C.
name: Khosla, A. L.
name: Merino, J.
name: Powell, B. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin-orbit coupling in crystals is known to lead to unusual direction dependent exchange interactions, however understanding of the consequeces of such effects in molecular crystals is incomplete. Here we perform four component relativistic density functional theory computations on the multi-nuclear molecular crystal {Mo$_3$S$_7$(dmit)$_3$} and show that both intra- and inter-molecular spin-orbit coupling are significant. We determine a long-range relativistic single electron Hamiltonian from first principles by constructing Wannier spin-orbitals. We analyse the various contributions through the lens of group theory. Intermolecular spin-orbit couplings like those found here are known to lead to quantum spin-Hall and topological insulator phases on the 2D lattice formed by the tight-binding model predicted for a single layer of {Mo$_3$S$_7$(dmit)$_3$}.
On Sparse High-Dimensional Graphical Model Learning For Dependent Time Series
Creators: name: Tugnait, Jitendra K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: We consider the problem of inferring the conditional independence graph (CIG) of a sparse, high-dimensional stationary multivariate Gaussian time series. A sparse-group lasso-based frequency-domain formulation of the problem based on frequency-domain sufficient statistic for the observed time series is presented. We investigate an alternating direction method of multipliers (ADMM) approach for optimization of the sparse-group lasso penalized log-likelihood. We provide sufficient conditions for convergence in the Frobenius norm of the inverse PSD estimators to the true value, jointly across all frequencies, where the number of frequencies are allowed to increase with sample size. This results also yields a rate of convergence. We also empirically investigate selection of the tuning parameters based on Bayesian information criterion, and illustrate our approach using numerical examples utilizing both synthetic and real data.
description: 20 pages, 5 figures. Published in Signal Processing. Latest version (June 4, 2024) corrects some typos
On $p$-index extremal groups
Creators: name: Vasil'ev, Andrey V.
name: Gorshkov, Ilya B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20E45, 20D60

description: The question on connection between the structure of a finite group $G$ and the properties of the indices of elements of $G$ has been a popular research topic for many years. The $p$-index $|x^G|_p$ of an element $x$ of a group $G$ is the $p$-part of its index $|x^G|=|G:C_G(x)|$. The presented short note describes some new results and open problems in this direction, united by the concept of the $p$-index of a group element.
Towards a more individualised support of science competition participants – identification and examination of participant profiles based on cognitive and affective characteristics
Creators: name: Tschisgale, Paul
name: Steegh, Anneke
name: Kubsch, Marcus
name: Petersen, Stefan
name: Neumann, Knut
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Student characteristics
subject: individualised support
subject: science competitions
subject: Physics Olympiad
subject: latent profile analysis
subject: 300 Sozialwissenschaften::370 Bildung und Erziehung::370 Bildung und Erziehung

description: Science competitions target students interested in science with the aim to support them in developing science competence and career aspirations. Contrary to the common belief that science competition participants are exceptionally competent and strongly motivated to pursue a science career, there is growing evidence that the entirety of participants is rather heterogeneous in terms of their cognitive and affective characteristics. For science competitions to better support all participants in developing competence and career aspirations, a better understanding of the cognitive and affective characteristics of the entirety of participants is required. This study examined the Physics Olympiad as a specific type of science competitions, leading to a nuanced characterisation of N = 155 Physics Olympiad participants. Latent profile analyses revealed four participant profiles distinguished by specific patterns in cognitive abilities, physics interest, and physics self-efficacy. Profiles differed in their performance in the competition and their physics career aspiration. Grade level, gender, previous participation in the competition, and teacher support explained differences in profile membership. Our findings emphasise that Physics Olympiad participants are a heterogeneous group with varying needs and offer implications for more individualised support activities to better support the entirety of participants in developing science competence and career aspirations.
Time-resolved pump-probe signals of a continuously driven quantum dot affected by phonons
Creators: name: Reiter, D. E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The interaction of a light field with a quantum-mechanical system can be studied in an optically controlled semiconductor quantum dot. When driven by a continuous light field switched on instantaneously, the quantum dot occupation performs Rabi oscillations. Unlike an atomic system, the quantum dot is coupled to phonons, which leads to a damping of the Rabi oscillations. Here we model the time-resolved probe spectra to monitor these dynamics and study the influence of phonons on the spectra. The spectra consist of up to three peaks, similar to the Mollow-triplet known from quantum optics. We develop analytical equations within a rate equation model and show that they agree excellently with a numerical solution using a well established correlation expansion approach.
Connecting the methods of psychology and philosophy: Applying Cognitive-Affective Maps (CAMs) to identify ethical principles underlying the evaluation of bioinspired technologies
Creators: name: Höfele, Philipp
name: Reuter, Lisa
name: Estadieu, Louisa
name: Livanec, Sabrina
name: Stumpf, Michael
name: Kiesel, Andrea
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Evaluation of bioinspired technologies
subject: ethical principles
subject: interdisciplinarity
subject: cognitive affective mapping
subject: empirical ethics
subject: 100 Philosophie und Psychologie::100 Philosophie::102 Verschiedenes

description: One major challenge of the 21st century is the increasingly rapid development of new technologies and their evaluation. In this article we argue for an interdisciplinary approach to meet this demand for evaluating new and specifically bioinspired technologies. We combine the consideration of normative principles in the field of ethics with psychological-empirical research on attitudes. In doing so, the paper has a twofold concern: first, we discuss how such an interdisciplinary collaboration can be implemented by using the method of Cognitive-Affective Mapping. Cognitive-Affective Maps (CAMs) enable a graphical representation of attitudes, including cognitive and affective aspects. Second, we argue that CAMs can be helpful to remedy the deficits of traditional ethical approaches. We applied CAMs in the context of an ethics seminar in which students were instructed to create CAMs based on bioinspired technologies twice – prior to the seminar to assess their evaluation on bioinspired technologies per se (pre-assessment) and after the seminar to assess how their evaluation might have changed and especially which normative ethical principles might have been additionally considered (post-assessment). As could be shown, CAMs can visualize the students’ attitudes, including the valence of ethical principles. Further, comparing pre- and post-CAMs indicated students’ attitude change.
Remote sensing of ice albedo using harmonized Landsat and Sentinel 2 datasets: validation
Creators: name: Feng, Shunan
name: Cook, Joseph Mitchell
name: Onuma, Yukihiko
name: Naegeli, Kathrin
name: Tan, Wenxia
name: Anesio, Alexandre Magno
name: Benning, Liane G.
name: Tranter, Martyn
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Ice albedo
subject: data harmonization
subject: spatial window size
subject: validation
subject: arctic and alpine
subject: Google Earth Engine
subject: 500 Naturwissenschaften und Mathematik::520 Astronomie::520 Astronomie und zugeordnete Wissenschaften

description: Albedo plays a key role in regulating the absorption of solar radiation within ice surfaces and hence strongly regulates the production of meltwater. A combination of Landsat and Sentinel 2 data provides the longest continuous medium resolution (10–30 m) earth surface observatory records. An albedo product (harmonized satellite albedo, hereafter HSA) has already been developed and validated for the Greenland Ice Sheet (GrIS), using harmonized Landsat 4–8 and Sentinel 2 datasets. In this paper, the HSA was validated for various Arctic and alpine glaciers and ice caps using in situ measurements. We determine the optimal spatial window size in point-to-pixel analysis, the best practices in evaluating remote sensing algorithms with groundtruth data, and cross sensor comparison of the Landsat 9 (L9) and Landsat 8 (L8) data. The impact of the spatial window size on measured ice surface homogeneity and albedo validation was analysed at both local and regional scales. Homogeneity statistics calculated from the grey-level co-occurrence matrix (GLCM) suggest that the ice surface becomes more homogeneous as the image resolution becomes coarser. The optimal spatial window size was found to be 90 m, based on maximizing the statistical and graphical measures while minimizing the root mean square error and bias. HSAs generally agree closely with in situ albedo measurements (e.g. Pearson’s R ranges from 0.68 to 0.92) across various Arctic and alpine glaciers and ice caps. Cross sensor differences between L9 and L8 are minor, and we suggest that no harmonization is necessary to add L9 to our HSA product.
Florence, Biblioteca Medicea Laurenziana, Med.Palat.141/2, fol. 316r-317r, transcription diplomatique (Gregorius Digital F2)
Creators: name: Andersen, Peter
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2024

description: Ce document Word contient une transcription diplomatique du manuscrit Florence, Biblioteca Medicea Laurenziana, Med.Palat.141/2, fol. 316r-317r, avec le récit du Bon Pécheur et est édité dans le cadre du projet Gregorius Digital sous le sigle F2 (dir. Peter Andersen – ARCHE UMR 3400 – Université de Strasbourg)
Monochromaticity of coherent Smith-Purcell radiation from finite size grating
Creators: name: Aryshev, A.
name: Potylitsyn, A.
name: Naumenko, G.
name: Shevelev, M.
name: Lekomtsev, K.
name: Sukhikh, L.
name: Karataev, P.
name: Honda, Y.
name: Terunuma, N.
name: Urakawa, J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Investigation of coherent Smith-Purcell Radiation (SPR) spectral characteristics was performed both experimentally and by numerical simulation. The measurement of SPR spectral line shapes of different diffraction orders was carried out at KEK LUCX facility. A pair of room-temperature Schottky barrier diode (SBD) detectors with sensitivity bands of $60-90$~GHz and $320-460$~GHz was used in the measurements. Reasonable agreement of experimental results and simulations performed with CST Studio Suite justifies the use of different narrow-band SBD detectors to investigate different SPR diffraction orders. It was shown that monochromaticity of the SPR spectral lines increases with diffraction order. The comparison of coherent transition radiation and coherent SPR intensities in sub-THz frequency range showed that the brightnesses of both radiation mechanisms were comparable. A fine tuning feasibility of the SPR spectral lines is discussed.
description: 7 pages, 7 figures, 3 tables
Self-consistent autocorrelation for finite-area bias correction in roughness measurement
Creators: name: Nečas, David
Publisher: name: arXiv
Year: 2023
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Scan line levelling, a ubiquitous and often necessary step in AFM data processing, can cause a severe bias on measured roughness parameters such as mean square roughness or correlation length. Although bias estimates have been formulated, they aimed mainly at assessing the severity of the problem for individual measurements. Practical bias correction methods are still missing. This work exploits the observation that the bias of autocorrelation function (ACF) can be expressed in terms of the function itself, permitting a self-consistent formulation. From this two correction approaches are developed, both with the aim to obtain convenient formulae which can be easily applied in practice. The first modifies standard analytical models of ACF to incorporate, in expectation, the bias and thus actually match the data the models are used to fit. The second inverts the relation between true and estimated ACF to realise a model-free correction. Both are tested using simulated and experimental data and found effective.
description: 19 pages, 7 figures
The Rise and Fall of Social Housing? Housing Decommodification in Long-run Comparison
Creators: name: Kholodilin, Konstantin Arkadievich
name: Kohl, Sebastian
name: Müller, Florian
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: housing tenure
subject: comparative
subject: social housing policies
subject: housing welfare
subject: decommodification
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::301 Soziologie, Anthropologie

description: The comparative study of housing decommodification lags behind classical welfare state research, while housing research itself is rich in homeownership studies but lacks comparative accounts of private and social rentals due to missing comparative data. Building on existing works and various primary sources, this study presents a new collection of up to forty-eight countries’ social housing shares in stock and new construction since the first housing laws around 1900. The interpolated benchmark time series generally describes the rise and fall of social housing across a residual, a socialist, and a Northern-European housing group. The decline was steeper than for the classical welfare state, but the degree of erosion was surprisingly small in some countries where public housing associations remained resilient. Within the broader housing welfare state, social housing correlates positively with rent regulation and allowances, but negatively with homeownership subsidies and liberal mortgage regulation. A multivariate analysis shows that social housing is rather explained by housing shortages and complementarities with rental and welfare policies than by typical welfare state theories (GDP, political parties). Generally, the paper shows that conventional housing typologies are difficult to defend over time and argues more generally for including housing decommodification in welfare state research.
Actinide–lanthanide co-extraction by rigidified diglycolamides
Creators: name: Macerata, Elena
name: Ossola, Annalisa
name: Panzeri, Walter
name: Giola, Marco
name: Faroldi, Federica
name: Tinonin, Dario Alberto
name: Mele, Andrea
name: Casnati, Alessandro
name: Mariani, Mario
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biochemistry
subject: Molecular Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: Within the actinide and lanthanide co-extraction strategy, three rigidified diglycolamides, namely 2,6-bis (N-dodecyl-carboxamide)-4-oxo-4H-pyran (1), 2,6-bis-[N-(4-tert-butylphenyl)carboxamide]-4-oxo-4H-pyran (2), 2,6-​bis[(N-docecyl-N-methyl)carboxamide]-​4-methoxy-​tetrahydro-pyran (3), were synthesized. Moreover, the effect of structural rigidification on Am(III) and Eu(III) extraction under different conditions was investigated. The carboxamide extractant 3 resembles the extracting behavior of N,N,N′,N′‐tetraoctyl diglycolamide (TODGA) in terms of efficiency and affinity within the lanthanide family, together with fast kinetics and satisfactory cation back-extraction. The presence of 1-octanol in the diluent mixture strongly affects the ligand stability. Moreover, despite the low extraction efficiency showed by 1 and 2, all the three ligands exhibit a higher affinity for Am with respect to TODGA, resulting in a lower lanthanide/Americium separation factor, of around 4 for ligand 3 and close to 1 for ligands 1 and 2.
Ce$_3$Bi$_4$Ni$_3$ $-$ A large hybridization-gap variant of Ce$_3$Bi$_4$Pt$_3$
Creators: name: Kirschbaum, D. M.
name: Yan, X.
name: Waas, M.
name: Svagera, R.
name: Prokofiev, A.
name: Stöger, B.
name: Giester, G.
name: Rogl, P.
name: Oprea, D. -G.
name: Felser, C.
name: Valentí, R.
name: Vergniory, M. G.
name: Custers, J.
name: Paschen, S.
name: Zocco, D. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The family of cubic noncentrosymmetric 3-4-3 compounds has become a fertile ground for the discovery of novel correlated metallic and insulating phases. Here, we report the synthesis of a new heavy fermion compound, Ce$_3$Bi$_4$Ni$_3$. It is an isoelectronic analog of the prototypical Kondo insulator Ce$_3$Bi$_4$Pt$_3$ and of the recently discovered Weyl-Kondo semimetal Ce$_3$Bi$_4$Pd$_3$. In contrast to the volume-preserving Pt-Pd substitution, structural and chemical analyses reveal a positive chemical pressure effect in Ce$_3$Bi$_4$Ni$_3$ relative to its heavier counterparts. Based on the results of electrical resistivity, Hall effect, magnetic susceptibility, and specific heat measurements, we identify an energy gap of 65-70 meV, about eight times larger than that in Ce$_3$Bi$_4$Pt$_3$ and about 45 times larger than that of the Kondo-insulating background hosting the Weyl nodes in Ce$_3$Bi$_4$Pd$_3$. We show that this gap as well as other physical properties do not evolve monotonically with increasing atomic number, i.e., in the sequence Ce$_3$Bi$_4$Ni$_3$-Ce$_3$Bi$_4$Pd$_3$-Ce$_3$Bi$_4$Pt$_3$, but instead with increasing partial electronic density of states of the $d$ orbitals at the Fermi energy. To understand under which condition topological states form in these materials is a topic for future studies.
description: 28 pages, 11 figures
Symmetry protected topological Luttinger liquids and the phase transition between them
Creators: name: Jiang, Hong-Chen
name: Li, Zi-Xiang
name: Seidel, Alexander
name: Lee, Dung-Hai
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show that a doped spin-1/2 ladder with antiferromagnetic intra-chain and ferromagnetic inter-chain coupling is a symmetry protected topologically non-trivial Luttinger liquid. Turning on a large easy-plane spin anisotropy drives the system to a topologically-trivial Luttinger liquid. Both phases have full spin gaps and exhibit power-law superconducting pair correlation. The Cooper pair symmetry is singlet $d_{xy}$ in the non-trivial phase and triplet $S_z=0$ in the trivial phase. The topologically non-trivial Luttinger liquid exhibits gapless spin excitations in the presence of a boundary, and it has no non-interacting or mean-field theory analog even when the fluctuating phase in the charge sector is pinned. As a function of the strength of spin anisotropy there is a topological phase transition upon which the spin gap closes. We speculate these Luttinger liquids are relevant to the superconductivity in metalized integer spin ladders or chains.
description: 5.2 pages, 4 figures + 2.8 pages supplemental materials
“Failure-to-warn” when giving advice to students? No evidence for an ethnic bias among teacher students in Germany
Creators: name: Nishen, Anna K.
name: Kessels, Ursula
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Failure-to-warn phenomenon
subject: Advice
subject: Ethnic bias
subject: Positive bias
subject: Teacher judgments
subject: 300 Sozialwissenschaften::370 Bildung und Erziehung::370 Bildung und Erziehung

description: Receiving appropriate, unbiased advice from their teachers is important for students’ smaller- and larger-scale educational decisions. However, teachers’ concerns about being or appearing to be prejudiced may interfere and lead them to provide encouraging advice to students belonging to negatively stereotyped groups even when it is not warranted (failure-to-warn phenomenon). In this experimental study, we aimed to replicate findings from the US and tested whether teacher students in Germany provided overly encouraging advice regarding the academic plans of a student with a Turkish (vs. German) name. Teacher students (n = 174) saw the overly ambitious timetable of a (supposed) student with a Turkish or German name and gave advice online on rating scales and in an open-response format. In their advice, they indicated, among others, the perceived demands of the timetable, possible affective and social consequences for the student, and the need to reconsider the timetable. Contrary to expectations and findings from the US, our analyses did not indicate differences in the advice that students with Turkish vs. German names received. Instead, teacher students warned students with a Turkish and German name equally of the difficulties associated with their potential timetable. We discuss both methodology- and theory-related potential explanations for these unexpected findings.
Infinitesimal structure of log canonical thresholds
Creators: name: Liu, Jihao
name: Meng, Fanjun
name: Xie, Lingyao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E30, 14B05

description: We show that log canonical thresholds of fixed dimension are standardized. More precisely, we show that any sequence of log canonical thresholds in fixed dimension $d$ accumulates in a way which is i) either similar to how standard and hyperstandard sets accumulate, or ii) to log canonical thresholds in dimension $\leq d-2$. This provides an accurate description on the infinitesimal structure of the set of log canonical thresholds. We also discuss similar behaviors of minimal log discrepancies, canonical thresholds, and K-semistable thresholds.
description: 22 pages
Reactions of pentachloro-2-nitrobutadiene with some aliphatic and heterocyclic thiols and a crystallographic study
Creators: name: Ibis, Cemil
name: Ayla, Sibel Sahinler
name: Şenol Yavuz
name: Asar, Hatice
name: Özkök, Funda
name: Bahar, Hakan
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: In this study, S-, S,S- and S,O-substituted novel nitrodiene compounds were synthesized. Cyclization products were formed when difunctional nucleophiles were used. The stereoisomerism of a heterocyclic nitrodiene is discussed with the help of XRD studies. The structures of all compounds were characterized by spectroscopic methods (FT-IR, 1H NMR, 13C NMR, 19F NMR, MS) and microanalysis.