cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Space-filling models of the biphenyl molecule
Creators: name: Chen, Junjie
Publisher: name: figshare
Year: 2022
Subjects: subject: Computational Chemistry
subject: Crystallography
subject: 30301 Chemical Characterisation of Materials
subject: FOS: Chemical sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: 30606 Structural Chemistry and Spectroscopy
subject: 30307 Theory and Design of Materials

description: Biphenyl, also called Diphenyl, is an aromatic hydrocarbon, used alone or with diphenyl ether as a heat-transfer fluid. It may be isolated from coal tar; in the United States, it is manufactured on a large scale by the thermal dehydrogenation of benzene. Biphenyl is slightly less reactive chemically than benzene. It is chlorinated industrially to a mixture, polychlorinated biphenyl. Pure biphenyl is a colourless crystalline solid with a pleasant odour; it is insoluble in water but soluble in ordinary organic solvents. Biphenyl is insoluble in water, but soluble in typical organic solvents. The biphenyl molecule consists of two connected phenyl rings. Lacking functional groups, biphenyl is fairly non-reactive, which is the basis of its main application. Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China
The Use of Proteolytic Enzymes in Inhibiting Cancer as Anti-Angiogenesis Agents: Mechanisms of Action
Creators: name: A.A. Ausaj
name: W.B. Abed
name: H.S. Al-Shmgani
Publisher: name: Opera Medica et Physiologica
Year: 2024
Subjects: proteolytic enzymes
anti-angiogenesis
tumor microenvironment
extracellular matrix
proteolytic therapeutic applications

description: The potential role of proteolytic enzymes in impeding the growth of cancer by the anti-angiogenesis process has gained attention recently. This review explores proteolytic enzymes that have been studied for their capacity to obstruct the development of new blood vessels that are essential for the growth of tumors. These enzymes include matrix metalloproteinase and serine proteases. The mechanisms by which these enzymes inhibit angiogenesis including degradation of extracellular matrix proteins and inhibition of signaling pathways involved in blood vessel formation are discussed. Also, proteolytic enzymes’ possible therapeutic applications as anti-angiogenesis drugs in the treatment of cancer are highlighted.
Phase Modeling of the TRAPPIST-1 Planetary Atmospheres
Creators: name: Kane, Stephen R.
name: Jansen, Tiffany
name: Fauchez, Thomas
name: Selsis, Franck
name: Ceja, Alma Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Transiting compact multi-planet systems provide many unique opportunities to characterize the planets, including studies of size distributions, mean densities, orbital dynamics, and atmospheric compositions. The relatively short orbital periods in these systems ensure that events requiring specific orbital locations of the planets (such as primary transit and secondary eclipse points) occur with high frequency. The orbital motion and associated phase variations of the planets provide a means to constrain the atmospheric compositions through measurement of their albedos. Here we describe the expected phase variations of the TRAPPIST-1 system and times of superior conjunction when the summation of phase effects produce maximum amplitudes. We also describe the infrared flux emitted by the TRAPPIST-1 planets and the influence on the overall phase amplitudes. We further present the results from using the global circulation model ROCKE-3D to model the atmospheres of TRAPPIST-1e and TRAPPIST-1f assuming modern Earth and Archean atmospheric compositions. These simulations are used to calculate predicted phase curves for both reflected light and thermal emission components. We discuss the detectability of these signatures and the future prospects for similar studies of phase variations for relatively faint M stars.
description: 14 pages, 6 figures, 2 tables, accepted for publication in the Astronomical Journal
Supp 1: Multiple episodes of Late Neoproterozoic rifting in the Tarim Craton during its separation from the Supercontinent Rodinia
Creators: name: Wang, Caiyun
name: Wu, Hongxiang
name: Dilek, Yildirim
name: Zhang, Fengqi
name: Chen, Hanlin
name: Li, Feng
name: Qiu, Duwei
name: Shi, Xuhua
name: Lin, Xiubin
name: Cheng, Xiaogan
Publisher: name: Geological Society of London
Year: 2024
Subjects: classificationCode: 3705
subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary Material 1. Methodology.
A new transform for solving the noisy complex exponentials approximation problem
Creators: name: Barone, Piero
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: Numerical Analysis (math.NA)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60G57, 41A21

description: The problem of estimating a complex measure made up by a linear combination of Dirac distributions centered on points of the complex plane from a finite number of its complex moments affected by additive i.i.d. Gaussian noise is considered. A random measure is defined whose expectation approximates the unknown measure under suitable conditions. An estimator of the approximating measure is then proposed as well as a new discrete transform of the noisy moments that allows to compute an estimate of the unknown measure. A small simulation study is also performed to experimentally check the goodness of the approximations.
description: 42 pages, 5 figures
3-D Statistical Indoor Channel Model for Millimeter-Wave and Sub-Terahertz Bands
Creators: name: Ju, Shihao
name: Xing, Yunchou
name: Kanhere, Ojas
name: Rappaport, Theodore S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Millimeter-wave (mmWave) and Terahertz (THz) will be used in the sixth-generation (6G) wireless systems, especially for indoor scenarios. This paper presents an indoor three-dimensional (3-D) statistical channel model for mmWave and sub-THz frequencies, which is developed from extensive channel propagation measurements conducted in an office building at 28 GHz and 140 GHz in 2014 and 2019. Over 15,000 power delay profiles (PDPs) were recorded to study channel statistics such as the number of time clusters, cluster delays, and cluster powers. All the parameters required in the channel generation procedure are derived from empirical measurement data for 28 GHz and 140 GHz line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios. The channel model is validated by showing that the simulated root mean square (RMS) delay spread and RMS angular spread yield good agreements with measured values. An indoor channel simulation software is built upon the popular NYUSIM outdoor channel simulator, which can generate realistic channel impulse response, PDP, and power angular spectrum.
description: 7 pages, 6 figures
Λειτουργικές ιδιότητες των πρωτεϊνών του λευκώματος του αυγού σε γαλακτώματα τύπου εμβάμματος σαλάτας
Creators: name: Δράκος, Αντώνιος Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Πρωτεΐνες λευκώματος αυγού
Κρόκος αυγού
Ξανθάνη
Σταθερότητα γαλακτώματος
Εμβάμματα σαλάτας
Egg white proteins
Yolk
Xanthan gum
Emulsion stability
Salad dressings

description: Αντικείμενο της εργασίας ήταν η μελέτη των γαλακτωματοποιητικών και σταθεροποιητικών ιδιοτήτων του λευκώματος του αυγού σε συστήματα τύπου εμβάμματος σαλάτας. Τα γαλακτώματα μελετήθηκαν ως προς τις ρεολογικές τους ιδιότητες και τον ρυθμό αποκορύφωσής τους και παρατηρήθηκαν με τη βοήθεια μικροσκοπίου για να διαπιστωθεί εαν και σε ποιο βαθμό η προσθήκη της ξανθάνης επηρέασε τις φυσικοχημικές τους ιδιότητες. Σε δεύτερη φάση μελετήθηκε η επίδραση της προσθήκης του αφυδατωμένου λευκώματος στη σταθερότητα γαλακτωμάτων τύπου εμβάμματος σαλάτας που παρασκευάστηκαν με κρόκο του αυγού, με σκοπό να διερευνηθεί ο ρόλος των πρωτεϊνών του λευκώματος στη φυσικοχημική σταθερότητα γαλακτωμάτων που περιέχουν πλήρες αυγό
description: The influence of xanthan gum concentration on the physicochemical stability of model oil-in-water emulsions prepared with egg white protein at ph 3.8 was investigated by following droplet aggregate formation, rheological changes and serum separation with storage time. In general egg white emulsions were more strongly flocculated and exhibited higher stability against creaming than those of yolk, irrespective of the presence or absence of xantan. Additioanlly, the influence of dehydrated egg white addition on the droplet aggregation of yolk-based model salad dressing emulsions was studied in an attempt to investigate the role of the egg of bumen fraction in the physicochemical changes that take place during storage of acidic emulsions containing whole egg
FREEDOM’S LANDING: THE UNDERGROUND RAILROAD BICYCLE ROUTE
Creators: name: Brown County, Tourism
Publisher: name: Digital Repository at the University of Maryland
Year: 2019
Subjects: Health
Practice

description: Now you can experience one of the most storied treks to freedom in American history – by bicycle. A clandestine network of routes and safe houses that helped enslaved Americans find freedom, the exact origin of the name is not known; however, by the 1820s both those who aided freedom seekers and those who were angered by the loss of their human “property” began to refer to an Underground Railroad. In its most developed form, the Underground Railroad offered local aid to runaways, assisting them from one point to another.
Global stability criterion for a quantum feedback control process on a single qubit and exponential stability in case of perfect detection efficiency
Creators: name: de Vries, Andreas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum feedback control is a technology which can be used to drive a quantum system into a predetermined eigenstate. In this article, sufficient conditions for the experiment parameters of a quantum feedback control process of a homodyne QND measurement are given to guarantee feedback control of a spin-1/2 quantum system in case of imperfect detection efficiency. For the case of pure states and perfect detection efficiency, time scales of feedback control processes are calculated.
description: 6 pages, 3 figures
Vibrational density of states of amorphous solids with long-ranged power-law correlated disorder in elasticity
Creators: name: Cui, Bingyu
name: Zaccone, Alessio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A theory of vibrational excitations based on power-law spatial correlations in the elastic constants (or equivalently in the internal stress) is derived, in order to determine the vibrational density of states $D(ω)$ of disordered solids. The results provide the first prediction of a boson peak in amorphous materials where spatial correlations in the internal stresses (or elastic constants) are of power-law form, as is often the case in experimental systems, leading to logarithmic enhancement of (Rayleigh) phonon attenuation. A logarithmic correction of the form $\sim -ω^{2}\lnω$ is predicted to occur in the plot of the reduced excess DOS for frequencies around the boson peak in 3D. Moreover, the theory provides scaling laws of the density of states in the low-frequency region, including a $\simω^{4}$ regime in 3D, and provides information about how the boson peak intensity depends on the strength of power-law decay of fluctuations in elastic constants or internal stress. Analytical expressions are also derived for the dynamic structure factor for longitudinal excitations, which include a logarithmic correction factor, and numerical calculations are presented supporting the assumptions used in the theory.
description: Topical Collection "Disordered, Non-Equilibrium Systems: From Supercooled Liquids to Amorphous Solids"
Multiple polarization orders in individual twinned colloidal nanocrystals of centrosymmetric HfO2
Creators: name: Du, Hongchu
name: Groh, Christoph
name: Jia, Chun-Lin
name: Ohlerth, Thorsten
name: Urban, Knut W.
name: Dunin-Borkowski, Rafal E.
name: Simon, Ulrich
name: Mayer, Joachim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spontaneous polarization is essential for ferroelectric functionality in non-centrosymmetric crystals. High-integration-density ferroelectric devices require the stabilization of ferroelectric polarization in small volumes. Here, atomic-resolution transmission electron microscopy imaging reveals that twinning-induced symmetry breaking in colloidal nanocrystals of centrosymmetric HfO2 leads to the formation of multiple polarization orders, which are associated with sub-nanometer ferroelectric and antiferroelectric phases. The minimum size limit of the ferroelectric phase is found to be ~4 nm3. Density functional theory calculations indicate that transformations between the ferroelectric and antiferroelectric phases can be modulated by lattice strain and are energetically possible in either direction. The results of this work provide a route towards applications of HfO2 nanocrystals in information storage at densities that are more than an order of magnitude higher than the scaling limit defined by the nanocrystal size.
Expression level of CD36 in experimental diabetic rats progressing to nephropathy
Creators: name: Ganesh, Rajesh
name: Shiju Micheal
name: Pragasm Viswanathan
Publisher: name: F1000Research
Year: 2015

description: Diabetic nephropathy (DNP) is a chronic kidney disease caused by diabetes mellitus.
The disease is being diagnosed clinically by microalbuminuria test, which is highly non-specific.
There is a need for alternate biomarker. In search of a novel biomarker, CD36 was identified. CD36 is an 88 kDa membrane glycoprotein with an ability to bind various ligands that include AGE and Ox-LDL.
Once the ligands bind to CD36, it activates PKC and MAPK pathway, which ultimately results in the apoptosis of tubular cells.
It has been reported that through a positive feedback mechanism, there is increased CD36 expression with the increase in the ligands.
Synchronization in Complex Systems Following the Decision Based Queuing Process: The Rhythmic Applause as a Test Case
Creators: name: Xenides, D.
name: Vlachos, D. S.
name: Simos, T. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Living communities can be considered as complex systems, thus a fertile ground for studies related to their statistics and dynamics. In this study we revisit the case of the rhythmic applause by utilizing the model proposed by Vázquez et al. [A. Vázquez et al., Phys. Rev. E 73, 036127 (2006)] augmented with two contradicted {\it driving forces}, namely: {\it Individuality} and {\it Companionship}. To that extend, after performing computer simulations with a large number of oscillators we propose an explanation on the following open questions (a) why synchronization occurs suddenly, and b) why synchronization is observed when the clapping period ($T_c$) is $1.5 \cdot T_s < T_c < 2.0 \cdot T_s$ ($T_s$ is the mean self period of the spectators) and is lost after a time. Moreover, based on the model, a weak preferential attachment principle is proposed which can produce complex networks obeying power law in the distribution of number edges per node with exponent greater than 3.
description: 16 pages, 5 figures
Lehmann, Hartmut (Hrsg.), Säkularisierung, Dechristianisierung, Rechristianisierung im neuzeitlichen Europa
Creators: name: Voß, Klaus Peter
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 47 Nr. 3 (1998): Ökumenische Rundschau, Band 47, Heft 3
A Vector Supersymmetry Killing the Infrared Singularity of Gauge Theories in Noncommutative Space
Creators: name: Blaschke, Daniel N.
name: Gieres, François
name: Piguet, Olivier
name: Schweda, Manfred
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the "topological BF-type" term introduced by Slavnov in order to cure the infrared divergences of gauge theories in noncommutative space can be characterized as the consequence of a new symmetry. This symmetry is a supersymmetry, generated by vector charges, of the same type as the one encountered in Chern-Simons or BF topological theories.
description: 9 pages, LaTex. Work presented by O. Piguet at the Fifth International Conference on Mathematical Methods in Physics, 24 - 28 April 2006, Rio de Janeiro, Brazil
Noether Symmetries and Quantum Cosmology in Extended Teleparallel Gravity
Creators: name: Bajardi, Francesco
name: Capozziello, Salvatore
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply the Noether Symmetry Approach to point-like teleparallel Lagrangians in view to derive minisuperspaces suitable for Quantum Cosmology. Adopting the Arnowitt-Deser-Misner formalism, we find out related Wave Functions of the Universe. Specifically, by means of appropriate changes of variables suggested by the existence of Noether symmetries, it is possible to obtain the cosmological Hamiltonians whose solutions are classical trajectories interpretable as observable universes.
description: 15 Pages, 1 figure
Berkeley Field Methods: Paraguayan Guaraní
Creators: name: Gómez, María
name: Ovelar, Irma Easty
name: Bossi, Madeline
name: Dabkowski, Maksymilian
name: Drummond, Emily
name: Grabowski, Emily
name: Jarvis, Rebecca
name: Khuu, Phuong
name: Michael, Lev
name: Russell, Katherine
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021

description: Video recordings and notes from in-class and small-group elicitation sessions pertaining to lexicon, grammar, and phonology, and of narrative texts. The course was carried out during the COVID-19 pandemic on Zoom. Recordings were made as compressed M4A files on Zoom, instead of as uncompressed WAV files using a digital recorder. Notes were taken using Google Docs, instead of with a notebook and pen; the Google documents are archived as PDF/A files. File bundles 004, 005, and 042 were deleted during the course of creating the archival deposit.
Scheerer, Reinhard (Hrsg.), Hoffnung läßt nicht zuschanden werden
Creators: name: Zademach, Wieland
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 47 Nr. 3 (1998): Ökumenische Rundschau, Band 47, Heft 3
Οι νεότουρκοι και όψεις της επίδρασής τους στο αλβανικό εθνικό κίνημα
Creators: name: Μέλλιος, Γεώργιος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Λέσχες
Συνέδριο Μοναστηριού
Κομιτάτο της ένωσης και της προόδου
Σύνδεσμος της Πριζρένης
Νεότουρκοι
Οθωμανικά βιλαέτια
Clubs
Congress of Monastir
Committee of union and progress
League of Prizren
Young turks
Ottoman provinces

description: Η εργασία αυτή αποτελεί μία προσπάθεια περιγραφής και καταγραφής των αλληλεπιδράσεων μεταξύ Νεότουρκων και Αλβανών. Ειδικότερα αναλύεται ο τρόπος με τον οποίο επηρεάστηκαν οι αλβανοί από τις κινήσεις των Νεότουρκων και πώς σταδιακά ανέπτυξαν την εθνική τους ταυτότητα. Οι περισσότερες κινήσεις και ιστορικές εξελίξεις αφορούν το διπλωματικό επίπεδο και βασίζονται στην ανταλλαγή υπομνημάτων και την αποδοχή αιτημάτων μέχρι να ξεσπάσει τελικά ο ένοπλος αγώνας των Αλβανών για την ανεξαρτησία
description: This work is an effort of description and recording of interaction between young turks and albanians. More specifically, it is analyzed in certain chapter how the albanians were influenced from the movements of young turks and how they developed from the movements of national identity. Most movements and historical developments took place in diplomatic level and they were based on the exchange of memoranda and the acceptance of demands until bursts out finally the armed fight of albania's independence
Effect of AECMA simplified English on the comprehension of aircraft maintenance procedures by non-native English speakers
Creators: name: Stewart, Kathleen M.
Publisher: name: University of British Columbia
Year: 2009

description: This study looked for an overall difference between the comprehension of a controlled language called Simplified English (SE) and the comprehension of standard English (non-SE) by non-native English speaking electronics technician students. Further, this study compared the effect of English-reading level on readers' comprehension, ability to locate information, and task completion time for an aircraft maintenance procedure written in SE and an equivalent procedure written in non-SE. The participants were 41 non-native English speaking students from 21 different countries enrolled in electronics technician programs at a technical school in British Columbia. Sixty-three percent of participants were enrolled in aviation-related programs. A reading test, the Accuracy Level Test by Ronald P. Carver, was first administered to participants to measure the English-reading ability of participants by grade level. Participants were then administered a comprehension test for which they were randomly assigned to read either the SE procedure or the non-SE procedure. The independent samples t-test was used to test for a significant difference between mean test scores for the SE group and the non-SE group. The chi-square test was performed on individual test questions, to look for a significant difference between the SE group and the non- SE group in response to individual questions. Ordinary least squares regression analysis was used to compare the overall difference in the relationship between reading level and comprehension, ability to locate information, and task completion time, for the SE group and the non-SE group. The Fisher Z test for testing independent correlation coefficients (r) was used to determine whether there was a significant difference between the regression lines for the SE group and the non-SE group. The results indicated that overall there was no significant difference between the comprehension of SE and the comprehension of non-SE by non-native English speakers. However, they showed a trend toward better comprehension of SE than non-SE, and suggested that non-native English speakers with lower reading levels benefit more from the use of SE than those with higher reading levels. Reading level was a significant predictor of comprehension and ability to locate information, but not of task completion time.
DESNASEs: a group of RNASE-based safety switches for Controlled Cell Elimination
Creators: name: Solofondrazaintsoanirina, Rojopitiavana
Publisher: name: Zenodo
Year: 2024

description: Safety switch systems represent gene expression units capable of transcription and translation, resulting in the production of polypeptides that induce cell death upon exposure to specific activating ligands. This discourse introduces RNAse-based safety switches, collectively known as DESNase (a combination of the words ‘destabilized’ and ‘RNAse’), capable of activation through small molecule ligands such as Shield-1, Trimethoprim, Methotrexate, or 4-hydroxytamoxifen. The DESNase system comprises a fusion of a cytotoxic domain (an RNAse polypeptide) and a destabilizing domain. The latter prompts rapid degradation of the entire fusion polypeptide. In the presence of a small molecule ligand, also referred to as a trigger or activator, the DESNAse is stabilized, enabling the cytotoxic domain to initiate the degradation of its RNA substrates. This action block protein synthesis, ultimately culminating in cell death.
Einfluss einer Rehabilitationsmaßnahme auf die Lebensqualität und psychische Gesundheit von Kindern und Jugendlichen mit Diabetes mellitus Typ 1
Creators: name: Hasmann, Theresa
name: Radke, Michael
Publisher: name: Universität Rostock
Year: 2017
Subjects: subject: 610 Medical sciences Medicine

description: Untersucht wurde der Einfluss einer Rehabiliationsmaßnahme auf die Lebensqualität und psychische Gesundheit von Kindern und Jugendlichen mit Diabetes mellitus Typ 1. Erfasst wurden Lebensqualität und psychische Gesundheit mithilfe standardisierter Fragebögen (CBCL/YSR, KINDL-R). Die erkrankten Kinder zeigen keine Einschränkung der Lebensqualität verglichen mit einer Normstichprobe. Die Rehabilitation führt zu einer signifikanten Verbesserung der Stoffwechseleinstellung und zeigt eine Zunahme der Lebensqualität in Unterskalen des KINDL-R Fragebogens an.
Free-space optical links for space communication networks
Creators: name: Carrasco-Casado, Alberto
name: Mata-Calvo, Ramon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Future spacecraft will require a paradigm shift in the way the information is transmitted due to the continuous increase in the amount of data requiring space links. Current radiofrequency-based communication systems impose a bottleneck in the volume of data that can be transmitted back to Earth due to technological as well as regulatory reasons. Free-space optical communication has finally emerged as a key technology for solving the increasing bandwidth limitations for space communication while reducing the size, weight and power of satellite communication systems, and taking advantage of a license-free spectrum. In the last few years, many missions have demonstrated in orbit the fundamental principles of this technology proving to be ready for operational deployment, and we are now witnessing the emergence of an increasing number of projects oriented to exploit space laser communication (lasercom) in scientific and commercial applications. This chapter describes the basic principles and current trends of this new technology.
description: 66 pages, 40 figures
Hahn, U. / Thiede, C.P. / u.a. (Hrsg.), Ökumene wohin?
Creators: name: Schroer, Jürgen
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 47 Nr. 3 (1998): Ökumenische Rundschau, Band 47, Heft 3
8.3_Lund: Semi-automatic taxonomy development for wind energy data collections
Creators: name: Lund, Haakon
name: Sempreviva, Anna Maria
Publisher: name: Zenodo
Year: 2019
Subjects: taxonomy
expert elicitation
keyword clustering
metadata

description: Presentation from the WESC 2019 Conference. For more detail please look in Lund, H. & Sempreviva, AM (2019) Semi-automatic taxonomy development for research data collections : the case of wind energy. 17thInternational Conference on Scientometrics& Informetrics. September 2-5, 2019, Rome
Space-filling models of the biphenyl molecule
Creators: name: Chen, Junjie
Publisher: name: figshare
Year: 2022
Subjects: subject: Computational Chemistry
subject: 30603 Colloid and Surface Chemistry
subject: FOS: Chemical sciences
subject: 30301 Chemical Characterisation of Materials
subject: 39999 Chemical Sciences not elsewhere classified
subject: 30606 Structural Chemistry and Spectroscopy
subject: 30307 Theory and Design of Materials

description: Biphenyl, also called Diphenyl, is an aromatic hydrocarbon, used alone or with diphenyl ether as a heat-transfer fluid. It may be isolated from coal tar; in the United States, it is manufactured on a large scale by the thermal dehydrogenation of benzene. Biphenyl is slightly less reactive chemically than benzene. It is chlorinated industrially to a mixture, polychlorinated biphenyl. Pure biphenyl is a colourless crystalline solid with a pleasant odour; it is insoluble in water but soluble in ordinary organic solvents. Biphenyl is insoluble in water, but soluble in typical organic solvents. The biphenyl molecule consists of two connected phenyl rings. Lacking functional groups, biphenyl is fairly non-reactive, which is the basis of its main application. Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China
Giant orbital diamagnetism of three-dimensional Dirac electrons in Sr$ _3$PbO antiperovskite
Creators: name: Suetsugu, S.
name: Kitagawa, K.
name: Kariyado, T.
name: Rost, A. W.
name: Nuss, J.
name: Mühle, C.
name: Ogata, M.
name: Takagi, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In Dirac semimetals, inter-band mixing has been known theoretically to give rise to a giant orbital diamagnetism when the Fermi level is close to the Dirac point. In Bi$ _{1-x}$Sb$ _x$ and other Dirac semimetals, an enhanced diamagnetism in the magnetic susceptibility $χ$ has been observed and interpreted as a manifestation of such giant orbital diamagnetism. Experimentally proving their orbital origin, however, has remained challenging. Cubic antiperovskite Sr$ _3$PbO is a three-dimensional Dirac electron system and shows the giant diamagnetism in $χ$ as in the other Dirac semimetals. $ ^{207}$Pb NMR measurements are conducted in this study to explore the microscopic origin of diamagnetism. From the analysis of the Knight shift $K$ as a function of $χ$ and the relaxation rate $T_1^{-1}$ for samples with different hole densities, the spin and the orbital components in $K$ are successfully separated. The results establish that the enhanced diamagnetism in Sr$ _3$PbO originates from the orbital contribution of Dirac electrons, which is fully consistent with the theory of giant orbital diamagnetism.
Τουρισμός και κοινοτικό δίκαιο: η προστασία του τουρίστα ως καταναλωτή
Creators: name: Σισμανίδου, Αρετή Σταύρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: subject: Κοινοτικό δίκαιο
subject: Τουρισμός
subject: Καταναλωτής
subject: Τουρίστας
subject: Οργανωμένα ταξίδια
subject: Χρονομεριστική μίσθωση
subject: Community law
subject: Tourism
subject: FOS: Economics and business
subject: Consumer
subject: Tourist
subject: Package travel
subject: Timeshare

description: Σκοπός της παρούσας μελέτης αποτελεί η προσέγγιση της προσταστίας του τουρίστα ως καταναλωτή του τουριστικού τομέα σε κοινοτικό επίπεδο. Αφού προηγείται μια σύντομη θεώρηση της θέσης του τουρισμού στη Συνθήκη περί ιδρύσεως της Ευρωπαϊκής Κοινότητας γίνεται εισαγωγή στο κύριο θέμα, όπου το ενδιαφέρον εστιάζεται, υπό το φως και των σχετικών κοινοτικών οδηγιών, πρώτον στα οργανωμένα ταξίδια, συμπεριλαμβανομένων και των αεροπορικών, και κατά δεύτερο λόγο στο θεσμό της χρονομεριστικής μίσθωσης. Συμπληρωματικά και σε σχέση με τις παραπάνω συμβάσεις, εξετάζεται το ζήτημα των καταχρηστικών ρητρών με τις οποίες συχνά έρχονται αντιμέτωποι οι καταναλωτές τουριστικών προϊόντων. Η εργασία ολοκληρώνεται με τη διατύπωση ορισμένων τελικών συμπερασματικών παρατηρήσεων καθώς και σκέψεων αναφορικά με τη μελλοντική διαμόρφωση της προστασίας του καταναλωτή γενικά στα πλαίσια της Ευρωπαϊκής Κοινότητας
description: The aim of the present study is the approach to the protection of the tourist as a consumer of the tourism sector at Community level. After a brief reference to the relevance oft he Treaty establishing the European Community to tourism, an introduction takes place to the main subject, where the interest firstly focuses on package travel, including air travel, and in the second place on timeshare contacts in the light of the relevant directives that were enacted in both areas. The matter of unfair terms in the above contracts that consumers of tourism products often encounter is examined in a complementary way. The epilogue contains conclusions as well as thoughts concerning the future formation of the consumer protection, in general within the Community
Determination of egg storage time at room temperature using a low-cost NIR spectrometer and machine learning techniques
Creators: name: Coronel-Reyes, Julian
name: Ramirez-Morales, Ivan
name: Fernandez-Blanco, Enrique
name: Rivero, Daniel
name: Pazos, Alejandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Nowadays, consumers are more concerned about freshness and quality of food. Poultry egg storage time is a freshness and quality indicator in industrial and consumer applications, even though egg marking is not always required outside the European Union. Other authors have already published works using expensive laboratory equipment in order to determine the storage time and freshness in eggs. Oppositely, this paper presents a novel method based on low-cost devices for rapid and non-destructive prediction of egg storage time at room temperature ($23\pm1$°C). H&N brown flock with 49-week-old hens were used as source for the sampled eggs. Those samples were daily scanned with a low-cost smartphone-connected near infrared reflectance (NIR) spectrometer for a period of 22 days starting to run from the egg laid. The resulting dataset of 660 samples was randomly splitted according to a 10-fold cross validation in order to be used in a contrast and optimization process of two machine learning algorithms. During the optimization, several models were tested to develop a robust calibration model. The best model use a Savitzky Golay preprocessing technique, and an Artificial Neural Network with ten neurons in one hidden layer. Regressing the storage time of the eggs, tests achieved a coefficient of determination (R-squared) of $0.8319\pm0.0377$ and a root mean squared error (RMSE) of 1.97. Although further work is needed, this technique has shown industrial potential and consumer utility to determine the egg's freshness by using a low-cost spectrometer connected to a smartphone.
description: 26 pages, 9 figures, 2 tables
Massive stars in the Small Magellanic Cloud : Evolution, rotation and surface abundances
Creators: name: Bouret, Jean-Claude
name: Martins, Fabrice
name: Hillier, Desmond John
name: Marcolino, Wagner
name: Rocha-Pinto, Helio
name: Georgy, Cyril
name: Lanz, Thierry
name: Hubeny, Ivan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the evolutionary and physical properties of evolved O stars in the Small Magellanic Cloud (SMC), with a special focus on their surface abundances to investigate the efficiency of rotational mixing as a function of age, rotation and global metallicity. We analyse the UV + optical spectra of thirteen SMC O-type giants and supergiants, using the stellar atmosphere code CMFGEN to derive photospheric and wind properties. We compare the inferred properties to theoretical predictions from evolution models. For a more comprehensive analysis, we interpret the results together with those we obtained for O-type dwarfs in a former study. Most dwarfs lie in the early phases of the main-sequence. For a given initial mass, giants are farther along the evolutionary tracks, confirming that they are more evolved than dwarfs. Supergiants have higher initial masses and are located past the terminal age main-sequence. We find no clear trend of a mass discrepancy, regardless of the diagram that was used to estimate the evolutionary mass. CNO abundances are consistent with nucleosynthesis from the CNO cycle. Comparisons to theoretical predictions reveal that the initial mixture is important when the observed trends in the N/C versus N/O diagram are to be reproduced. A trend for stronger chemical evolution for more evolved objects is observed. More massive stars, are on average, more chemically enriched at a given evolutionary phase, qualitatively consistent with evolutionary models. Abundance ratios supports the theoretical prediction that massive stars at low metallicity are more chemically processed than their Galactic counterparts. Finally, models including rotation generally reproduce the surface abundances and rotation rates when different initial rotational velocities are considered. Nevertheless, there are objects for which a stronger braking and/or more efficient mixing is required.
description: 30 pages. 28 figures, 6 tables. Accepted in A&A. English edited version
Equivalence of Hidden Markov Models with Continuous Observations
Creators: name: Darwin, Oscar
name: Kiefer, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.0; G.3

description: We consider Hidden Markov Models that emit sequences of observations that are drawn from continuous distributions. For example, such a model may emit a sequence of numbers, each of which is drawn from a uniform distribution, but the support of the uniform distribution depends on the state of the Hidden Markov Model. Such models generalise the more common version where each observation is drawn from a finite alphabet. We prove that one can determine in polynomial time whether two Hidden Markov Models with continuous observations are equivalent.
description: 17 pages, 9 figures, Submitted to FSTTCS 2020
Perturbative chiral nucleon-nucleon potential for the $^3P_0$ partial wave
Creators: name: Peng, Rui
name: Lyu, Songlin
name: Long, Bingwei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study perturbativeness of chiral nuclear forces in the $^3P_0$ channel. In previous works, the focus has been on one-pion exchange, and the applicable window of perturbative pion exchanges has been shown to span from threshold to the center-of-mass momentum $k \simeq$ 180 MeV. We will examine, instead, whether cancellation of short and long-range parts can sufficiently soften the $^3P_0$ chiral force to make it more amenable to perturbation theory. The result is encouraging, as the combined $^3P_0$ force is shown to be perturbative up to $k \simeq$ 280 MeV, covering many nuclear-structure calculations.
Πολυμετάβλητη ανάλυση δεδομένων μαθητών για πρόσβαση στην τριτοβάθμια εκπαίδευση με στατιστικό λογισμικό
Creators: name: Τριανταφύλλου, Χρήστος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Πολυμεταβλητή ανάλυση δεδομένων
Παραγοντική ανάλυση
Παλινδρόμηση
Διακριτή ανάλυση
Περιγραφική στατιστική
Regration
Factor analysis
Descrimenant analysis

description: Πολυμεταβλητή ανάλυση σε δεδομένα από μηχανογραφικά υποψηφίων της Γ' λυκείου, για πρόσβασή τους στην τριτοβάθμια εκπαίδευση. Εγινε περιγραφική ανάλυση στα δεδομένα του σχολικού έτους 2004-2005 και ακολούθως ερευνητική στατιστική (παραγοντική ανάλυση, παλινδρόμηση, διακριτική ανάλυση, εξαγωγή κύριων συνιστωσών)
description: The data concern the all students of the third class of Lycea from the prefecture of Serres, Greece. The methodologists followed were descriptive statistical, finding of cross-correlations, connected and not connected control t, analysis of main components (PCA), analysis of factors (FA), analysis of regression (RA) and Hierarchical Cluster analysis (HCA)
Μελέτη της ροής υγρών διακλυσμών σε προπαρασκευασμένο ριζικό σωλήνα με τη μέθοδο των πεπερασμένων όγκων
Creators: name: Μπουτσιούκης, Χρήστος Αστέριου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Υγρό διακλυσμών
Ριζικός σωλήνας
Ροή
Παροχή
Μέθοδος πεπερασμένων όγκων
Irrigation
Flow rate
Needle
Computational fluid dynamics

description: Σκοπός της μελέτης είναι να διερευνήσει την επίδραση της παροχής του υγρού διαυκλυσμών στην ανάπτυξη ροής σε προπαρασκευασμένο ριζικό σωλήνα κατά την διενέργεια τελικού διακλυσμού με σύγριγγα και ειδική βελόνα ενδοδοντίας. Η γεωμετρία μιας ειδικής βελόνας διακλυσμών και οι τιμές παροχής που χρησιμοποιούνται στην πράξη προσδιορίστηκαν σε προκαταρκτικές μελέτες. Δημιουργήθηκε ένα μοντέλο Υπολογιστικής Ρευστοδυναμικής με τη βοήθεια του λογισμικού FLUENT. Εγιναν διαδοχικές προσομοιώσεις για πέντε επιλεγμένες τιμές παροχής (0,02-0,79 ml/sec). Τυρβώδης ροή αναπτύχθηκε στο ακρορριζικό τμήμα του ριζικού σωλήνα και κοντά στην οπή εξόδου της βελόνας. Η ένταση της τύρβης ήταν μεγαλύτερη όσο αυξάνονταν η παροχή. Η ανανέωση του υγρού ακρορριζικά της βελόνας δεν ήταν ικανοποιητική σε καμία από τις περιπτώσεις που μελετήθηκαν. Η παροχή επηρεάζει σημαντικά την αναπτυσσόμενη ροή. Η τυρβώδης ροή είναι επιθυμητή διότι οδηγεί σε πιο αποτελεσματική ανανέωση του υγρού. Η υπολογιστική ρευστοδυναμική αποτελεί ένα χρήσιμο εργαλείο για τη διερεύνηση των διακλυσμών
description: To study the effect of irrigant flow rate on the flow pattern within a prepared root canal during final irrigation with a syringe and needle. Geometrical characteristic of a side-vented endodontic needle and clinically realistic flow rate values were obtained through preliminary studies. A computational fluid dynamics model was reated using FLUENT 6.2. Calculations were carried out for five selected flow rates (0.02-0.79 ml/sec). Turbulent flow was detected in the apical part of the canal and near the needle exit. Turbulence intensity increased together with the flow rate. Irrigant replacement apically to the needle tip was not satisfactory for any of the flow rates studied. Irrigant flow rate appears to be highly significant in determing the flow pattern within the root canal. Development of turbulent flow should be desired as it leads to more efficient irrigant replacement. Computational Fluid Dynamics represents a powerful tool for the study of irrigations
On the Composition of the Long Tail of Business Processes: Implications from a Process Mining Study
Creators: name: Fischer, Marcus
name: Hofmann, Adrian
name: Imgrund, Florian
name: Janiesch, Christian
name: Winkelmann, Axel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Digital transformation forces companies to rethink their processes to meet current customer needs. Business Process Management (BPM) can provide the means to structure and tackle this change. However, most approaches to BPM face restrictions on the number of processes they can optimize at a time due to complexity and resource restrictions. Investigating this shortcoming, the concept of the long tail of business processes suggests a hybrid approach that entails managing important processes centrally, while incrementally improving the majority of processes at their place of execution. This study scrutinizes this observation as well as corresponding implications. First, we define a system of indicators to automatically prioritize processes based on execution data. Second, we use process mining to analyze processes from multiple companies to investigate the distribution of process value in terms of their process variants. Third, we examine the characteristics of the process variants contained in the short head and the long tail to derive and justify recommendations for their management. Our results suggest that the assumption of a long-tailed distribution holds across companies and indicators and also applies to the overall improvement potential of processes and their variants. Across all cases, process variants in the long tail were characterized by fewer customer contacts, lower execution frequencies, and a larger number of involved stakeholders, making them suitable candidates for distributed improvement.
description: Accepted for publication at Information Systems
Tunable spin-flop transition in artificial ferrimagnets
Creators: name: Antropov, N. O.
name: Kravtsov, E. A.
name: Makarova, M. V.
name: Proglyado, V. V.
name: Keller, T.
name: Subbotin, I. A.
name: Pashaev, E. M.
name: Prutskov, G. V.
name: Vasiliev, A. L.
name: Chesnokov, Yu. M.
name: Bebenin, N. G.
name: Ustinov, V. V.
name: Keimer, B.
name: Khaydukov, Yu. N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin-flop transition (SFT) consists in a jump-like reversal of antiferromagnetic magnetic moments into a non-collinear state when the magnetic field increases above the critical value. Potentially the SFT can be utilized in many applications of a rapidly developing antiferromagnetic spintronics. However, the difficulty of using them in conventional antiferromagnets lies in (a) too large switching magnetic fields (b) the need for presence of a magnetic anisotropy, and (c) requirement to apply magnetic field along the correspondent anisotropy axis. In this work we propose to use artificial ferrimagnets in which the spin-flop transition occurs without anisotropy and the transition field can be lowered by adjusting exchange coupling in the structure. This is proved by experiment on artificial Fe-Gd ferrimagnets where usage of Pd spacers allowed us to suppress the transition field by two orders of magnitude.
description: article, 5 pages, 3 figures
The common origin of family and non-family asteroids
Creators: name: Dermott, Stanley F.
name: Christou, Apostolos A.
name: Li, Dan
name: Kehoe, Thomas J. J.
name: Robinson, J. Malcolm
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: All asteroids are currently classified as either family, originating from the disruption of known bodies, or non-family. An outstanding question is the origin of these non-family asteroids. Were they formed individually, or as members of known families but with chaotically evolving orbits, or are they members of old ghost families, that is, asteroids with a common parent body but with orbits that no longer cluster in orbital element space? Here, we show that the sizes of the non-family asteroids in the inner belt are correlated with their orbital eccentricities and anticorrelated with their inclinations, suggesting that both non-family and family asteroids originate from a small number of large primordial planetesimals. We estimate that ~85% of the asteroids in the inner main belt originate from the Flora, Vesta, Nysa, Polana and Eulalia families, with the remaining ~15% originating from either the same families or, more likely, a few ghost families. These new results imply that we must seek explanations for the differing characteristics of the various meteorite groups in the evolutionary histories of a few, large, precursor bodies. Our findings also support the model that asteroids formed big through the gravitational collapse of material in a protoplanetary disk.
description: 12 pages, 4 figures, includes Supplementary Info