cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
How to construct the proper gauge-invariant density matrix in steady-state nonequilibrium: Applications to spin-transfer and spin-orbit torques
Creators: name: Mahfouzi, Farzad
name: Nikolic, Branislav K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Experiments observing spin density and spin currents (responsible for, e.g., spin-transfer torque) in spintronic devices measure only the nonequilibrium contributions to these quantities, typically driven by injecting unpolarized charge current or by applying external time-dependent fields. On the other hand, theoretical approaches to calculate them operate with both the nonequilibrium (carried by electrons around the Fermi surface) and the equilibrium (carried by the Fermi sea electrons) contributions. Thus, an unambiguous procedure should remove the equilibrium contributions, thereby rendering the nonequilibrium ones which are measurable and satisfy the gauge-invariant condition according to which expectation values of physical quantities should not change when electric potential everywhere is shifted by a constant amount. Using the framework of nonequilibrium Green functions, we delineate such procedure which yields the proper gauge-invariant nonequilibrium density matrix in the linear-response and elastic transport regime for current-carrying steady state of an open quantum system connected to two macroscopic reservoirs. Its usage is illustrated by computing: (i) conventional spin-transfer torque (STT) in asymmetric F/I/F magnetic tunnel junctions (MTJs); (ii) unconventional STT in asymmetric N/I/F semi-MTJs with the strong Rashba spin-orbit coupling (SOC) at the I/F interface and injected current perpendicular to that plane; and (iii) current-driven spin density within a clean ferromagnetic Rashba spin-split two-dimensional electron gas (2DEG) which generates SO torque in laterally patterned N/F/I heterostructures when such 2DEG is located at the N/F interface and injected charge current flows parallel to the plane.
description: 18 pages, 5 color EPS figures; mini-review prepared for SPIN (World Scientific); typos corrected and references added in v2
title: Experimental study of simultaneous localization & mapping algorithms on the Turtlebot platform
title: Πειραματική μελέτη αλγορίθμων ταυτόχρονου εντοπισμού θέσης & χαρτογράφησης στην πλατφόρμα Turtlebot
Creators: name: Ανδριανακης Εμμανουηλ
Publisher: name: Technical University of Crete
Year: 2020

description: This work merges robotics and radio frequency identiﬁcation (RFID) technologies, with the goal to enable precise RFID tag localization. A low-cost robotic platform was used to create a mobile robot equipped with multiple modules for RFID inventorying and enhanced perception of robot’s environment. Various modiﬁcations were performed on the robot, so it could support all the additional modules. Open source software was exploited for the creation of accurate maps and estimation of the robot’s pose. Prior art localization methods, based on optimization and particle ﬁltering were exploited, using phase measurements of the RF signal. Implementation and experimental results showed mean location estimation error of 0.2 m and 0.04 m, for two dimensions and one dimension, respectively. Execution times suggest that for robot velocity of 10 cm/sec, the oﬀered implementations were real time.

description: Στην εργασία αυτή συνδυάζονται τεχνολογίες ρομποτικής και Radio Frequency IDentification (RFID), έτσι ώστε να δοθεί η δυνατότητα ακριβούς εντοπισμού της θέσης των ετικετών RFID. Για να επιτευχθεί αυτό, χρησιμοποιήθηκε μια χαμηλού κόστους ρομποτική πλατφόρμα και δημιουργήθηκε ένα κινητό ρομπότ με πληθώρα περιφερειακών, τα οποία προσφέρουν δεδομένα για τις RFID ετικέτες και το περιβάλλον, στο οποίο βρίσκεται το ρομπότ. Έγιναν αρκετές τροποποιήσεις στην πλατφόρμα για να μπορεί να υποστηρίξει τα επιπλέον περιφερειακά και χρησιμοποιήθηκε λογισμικό ανοιχτού κώδικα για την δημιουργία χαρτών καθώς και για την εκτίμηση θέσης και προσανατολισμού του ρομπότ. Αξιοποιήθηκαν μετρήσεις φάσης του RF σήματος λήψης μέσω εμπορικού αναγνώστη, σε συνδυασμό με αλγορίθμους εντοπισμού θέσης από την βιβλιογραφία, βασισμένους σε μεθόδους βελτιστοποίησης και σε φίλτρα σωματιδίων. Η υλοποίηση και πειραματική μελέτη έδειξαν μέσο σφάλμα εκτίμησης θέσης ετικετών 0.2m και 0.04m, σε δύο διαστάσεις και μία διάσταση, αντίστοιχα. Σχετικά με τους χρόνους εκτέλεσης μπορούμε να συμπεράνουμε ότι οι υλοποιήσεις για κίνηση του ρομπότ με ταχύτητες 10cm/sec έγιναν σε πραγματικό χρόνο.
Andrea Salcuni, Pitture parietali e pavimenti decorati di epoca romana in Abruzzo
Creators: name: Donderer, Michael
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Rezension zu: Andrea Salcuni, Pitture parietali e pavimenti decorati di epoca romana in Abruzzo. Frankfurter Archäologische Schriften, Band 19. Verlag Dr. Rudolf Habelt, Bonn 2012. 183 Seiten mit 270 Abbildungen, 8 Farbtafeln.
description: Bonner Jahrbücher, Bd. 213.2013(2014): Bonner Jahrbücher
Singularities of theta divisors in algebraic geometry
Creators: name: Casalaina-Martin, Sebastian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14K25, 14H42, 14H40

description: The singularities of theta divisors have played an important role in the study of algebraic varieties. This paper surveys some of the recent progress in this subject, using as motivation some well known results, especially those for Jacobians.
description: 22 pages, AMS LaTex
Klaus Müller, Die Ehrenbögen in Pompeji, con contributi di Valentin Kockel
Creators: name: De Maria, Sandro
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Rezension zu: Klaus Müller, Die Ehrenbögen in Pompeji, con contributi di Valentin Kockel. Studien zur antiken Stadt, volume 10. Casa editrice Dr. Ludwig Reichert, Wiesbaden 2011. 140 pagine con 115 figure, 23 tavole.
description: Bonner Jahrbücher, Bd. 213.2013(2014): Bonner Jahrbücher
Payment Rules through Discriminant-Based Classifiers
Creators: name: Duetting, Paul
name: Fischer, Felix
name: Jirapinyo, Pitchayut
name: Lai, John K.
name: Lubin, Benjamin
name: Parkes, David C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In mechanism design it is typical to impose incentive compatibility and then derive an optimal mechanism subject to this constraint. By replacing the incentive compatibility requirement with the goal of minimizing expected ex post regret, we are able to adapt statistical machine learning techniques to the design of payment rules. This computational approach to mechanism design is applicable to domains with multi-dimensional types and situations where computational efficiency is a concern. Specifically, given an outcome rule and access to a type distribution, we train a support vector machine with a special discriminant function structure such that it implicitly establishes a payment rule with desirable incentive properties. We discuss applications to a multi-minded combinatorial auction with a greedy winner-determination algorithm and to an assignment problem with egalitarian outcome rule. Experimental results demonstrate both that the construction produces payment rules with low ex post regret, and that penalizing classification errors is effective in preventing failures of ex post individual rationality.
title: MIMObit-assisted antenna selection
title: Επιλογή κεραιών με τη βοήθεια του MIMObit
Creators: name: Βασιλοπουλος Αλκιβιαδης
Publisher: name: Technical University of Crete
Year: 2020

description: In this work, we study antenna selection criteria and algorithms for multiple-input multiple-output (MIMO) wireless systems using channel data produced by the specialized software MIMObit. We begin by summarizing conventional performance metrics for MIMO systems and presenting several antenna selection algorithms. We run these algorithms in MALAB, assuming that, when some antennas are not selected for operation, the channel coefficients of the selected ones do not change. However, this assumption (which is conventionally made in the literature) does not hold true in reality. To develop a more realistic solution for the antenna selection problem, we use MIMObit which offers an integrated platform that helps us simulate MIMO systems with custom created dipoles under different propagation environments and generate the corresponding channel coefficients. Using MIMObit, we utilize the actual channel coefficients after the antenna selection process and show that the MIMObit-assisted antenna selection approach always outperforms the conventional one. In some cases, the performance gain is noticeable.
description: Σκοπός της διπλωματικής εργασίας είναι η μελέτη κριτηρίων και αλγορίθμων για επιλογή κεραιών σε ασύρματα συστήματα πολλαπλών εισόδων – πολλαπλών εξόδων (MIMO) χρησιμοποιώντας δεδομένα καναλιών που παράγονται από το εξειδικευμένο λογισμικό MIMObit. Αρχίζουμε με περιληπτική παρουσίαση
συμβατικών μετρικών απόδοσης για συστήματα MIMO και παρουσίαση διάφορων αλγορίθμων επιλογής κεραιών. Υλοποιούμε αυτούς τους αλγορίθμους στο MATLAB, υποθέτοντας ότι, όταν κάποιες κεραίες δεν επιλέγονται για λειτουργία, οι συντελεστές καναλιού αυτών που επιλέγονται παραμένουν αμετάβλητοι. Ωστόσο, αυτή η υπόθεση (που συμβατικά γίνεται στη βιβλιογραφία) δεν ισχύει στην πραγματικότητα. Για να αναπτύξουμε μια πιο ρεαλιστική λύση για το πρόβλημα της επιλογής κεραιών, χρησιμοποιούμε το MIMObit το οποίο αποτελεί μία ολοκληρωμένη πλατφόρμα που μας βοηθά να προσομοιώνουμε τα συστήματα MIMO με ειδικά σχεδιασμένα δίπολα μέσα από διαφορετικά περιβάλλοντα διάδοσης και να παράγουμε τα αντίστοιχα κανάλια. Χρησιμοποιώντας το MIMObit, αξιοποιούμε τους πραγματικούς συντελεστές καναλιού που προκύπτουν μετά τη διαδικασία επιλογής των κεραιών και δείχνουμε ότι η μέθοδος επιλογής κεραιών που βασίζεται στο MIMObit αποδίδει πάντα καλύτερα από τη συμβατική μέθοδο. Σε κάποιες περιπτώσεις, το κέρδος ως προς την απόδοση είναι σημαντικό.
Dela von Boeselager, Römische Gläser aus Gräbern an der Luxemburger Straße in Köln. Typologie, Chronologie, Grabkontexte
Creators: name: Scatozza Höricht, Lucia A.
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Rezension zu: Dela von Boeselager, Römische Gläser aus Gräbern an der Luxemburger Straße in Köln. Typologie, Chronologie, Grabkontexte. Kölner Jahrbuch, volume 45. Casa editrice di Römisch-Germanisches Museum und Archäologische Gesellschaft Köln, Colonia 2012. Pagine 7–526 con 526 figure, 161 tavole, 1 allegato fuori testo.
description: Bonner Jahrbücher, Bd. 213.2013(2014): Bonner Jahrbücher
Bettina Tremmel, Der Kastellvicus des 1. Jahrhunderts n. Chr. von Augusta Vindelicum / Augsburg
Creators: name: Oldenstein, Jürgen
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Rezension zu: Bettina Tremmel, Der Kastellvicus des 1. Jahrhunderts n. Chr. von Augusta Vindelicum / Augsburg. Augsburger Beiträge zur Archäologie, Band 6. Verlag Wißner, Augsburg 2012. 230 Seiten mit 47 Abbildungen, 45 Tafeln.
description: Bonner Jahrbücher, Bd. 213.2013(2014): Bonner Jahrbücher
Additional file 2 of Population size as a major determinant of mating system and population genetic differentiation in a narrow endemic chasmophyte
Creators: name: Surina, Boštjan
name: Balant, Manica
name: Glasnović, Peter
name: Radosavljević, Ivan
name: Fišer, Živa
name: Fujs, Nataša
name: Castro, Sílvia
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2.
title: A tomada de decisão no âmbito da avaliação das capacidades parentais
Creators: name: Fialho Pereira, Dora Isabel
name: Alarcão, Madalena
Publisher: name: Universidade Lusíada Editora
Year: 2015

description: Intervenção social. - ISSN 0874-1611. - N. 42-45 (2.º semestre 2013 - 1.º semestre 2015). - p. 43-64.
title: Serviço social em debate : que referenciais genéricos?
Creators: name: de Sousa, Isabel
Publisher: name: Universidade Lusíada Editora
Year: 2015

description: Intervenção social. - ISSN 0874-1611. - N. 42-45 (2.º semestre 2013 - 1.º semestre 2015). - p. 11-23.
Additional file 3 of Population size as a major determinant of mating system and population genetic differentiation in a narrow endemic chasmophyte
Creators: name: Surina, Boštjan
name: Balant, Manica
name: Glasnović, Peter
name: Radosavljević, Ivan
name: Fišer, Živa
name: Fujs, Nataša
name: Castro, Sílvia
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3.
A New Algorithm for Data Compression Optimization
Creators: name: Suarjaya, I. Made Agus Dwi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: F.2.0
subject: 68W01

description: People tend to store a lot of files inside theirs storage. When the storage nears it limit, they then try to reduce those files size to minimum by using data compression software. In this paper we propose a new algorithm for data compression, called j-bit encoding (JBE). This algorithm will manipulates each bit of data inside file to minimize the size without losing any data after decoding which is classified to lossless compression. This basic algorithm is intended to be combining with other data compression algorithms to optimize the compression ratio. The performance of this algorithm is measured by comparing combination of different data compression algorithms.
description: 4 pages
Sharing economy as an alternative proposal to fast fashion
Creators: name: Ruiz-Navarro, Ramon
name: Hintzmann, Carolina
name: Corrons, August
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 380102
subject: Behavioural economics
classificationCode: 380105
subject: Environment and resource economics
classificationCode: 389902
subject: Ecological economics
classificationCode: 380202
subject: Econometric and statistical methods
classificationCode: 380399
subject: Economic theory not elsewhere classified

description: This doctoral thesis analyzes people's attitude and behavior towards the sharing economy, specifically in relation to clothing exchange platforms, as an alternative proposal to fast fashion. The objective is to understand the factors and variables that influence the adoption of this type of sharing economy and develop a model that explains this process. The SEM methodology (structural equations) has been used to analyze the variables empirically. The study is based on the framework of consumer behavior and technological innovations. The work investigates the background of consumer attitudes and intentions on these platforms and seeks to understand whether the reasons for their use are economic, environmental, or social. The proposed model has also considered the extraordinary influence of COVID-19 on behavioral intention. Likewise, the research contributes to knowledge in the field of human behavior and offers a new perspective on the consumer in the sharing economy. Taken together, this research addresses an underexplored area and is important for understanding and promoting the adoption of the sharing economy in the context of fashion.
Higgs Boson self-coupling measurements using ratios of cross sections
Creators: name: Goertz, Florian
name: Papaefstathiou, Andreas
name: Yang, Li Lin
name: Zurita, José
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider the ratio of cross sections of double-to-single Higgs boson production at the Large Hadron Collider at 14 TeV. Since both processes possess similar higher-order corrections, leading to a cancellation of uncertainties in the ratio, this observable is well-suited to constrain the trilinear Higgs boson self-coupling. We consider the scale variation, parton density function uncertainties and conservative estimates of experimental uncertainties, applied to the viable decay channels, to construct expected exclusion regions. We show that the trilinear self-coupling can be constrained to be positive with a 600/fb LHC dataset at 95% confidence level. Moreover, we demonstrate that we expect to obtain a ~+30% and ~-20 uncertainty on the self-coupling at 3000/fb without statistical fitting of differential distributions. The present article outlines the most precise method of determination of the Higgs trilinear coupling to date.
description: 22 pages, 11 figures. Published in JHEP. Contains several major improvements to text and figures with respect to the previous version
Joseph Fischer, Das archaische Ephesos im Spiegel der literarischen Überlieferung
Creators: name: Calapà, Annalisa
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Rezension zu: Joseph Fischer, Das archaische Ephesos im Spiegel der literarischen Überlieferung. Studien zur Geschichtsforschung des Altertums, volume 27. Casa editrice Dr. Kovač, Amburgo 2013. 100 pagine.
description: Bonner Jahrbücher, Bd. 213.2013(2014): Bonner Jahrbücher
Additional file 4 of Population size as a major determinant of mating system and population genetic differentiation in a narrow endemic chasmophyte
Creators: name: Surina, Boštjan
name: Balant, Manica
name: Glasnović, Peter
name: Radosavljević, Ivan
name: Fišer, Živa
name: Fujs, Nataša
name: Castro, Sílvia
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4.
The coronal source of extreme-ultraviolet line profile asymmetries in solar active region outflows
Creators: name: Brooks, David H.
name: Warren, Harry P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: High resolution spectra from the Hinode EUV Imaging Spectrometer (EIS) have revealed that coronal spectral line profiles are sometimes asymmetric, with a faint enhancement in the blue wing on the order of 100 km/s. These asymmetries could be important since they may be subtle, yet diagnostically useful signatures of coronal heating or solar wind acceleration processes. It has also been suggested that they are signatures of chromospheric jets supplying mass and energy to the corona. Until now, however, there have been no studies of the physical properties of the plasma producing the asymmetries. Here we identify regions of asymmetric profiles in the outflows of AR 10978 using an asymmetric Gaussian function and extract the intensities of the faint component using multiple Gaussian fits. We then derive the temperature structure and chemical composition of the plasma producing the asymmetries. We find that the asymmetries are dependent on temperature, and are clearer and stronger in coronal lines. The temperature distribution peaks around 1.4-1.8 MK with an emission measure at least an order of magnitude larger than that at 0.6 MK. The first ionization potential bias is found to be 3-5, implying that the high speed component of the outflows may also contribute to the slow speed wind. Observations and models indicate that it takes time for plasma to evolve to a coronal composition, suggesting that the material is trapped on closed loops before escaping, perhaps by interchange reconnection. The results, therefore, identify the plasma producing the asymmetries as having a coronal origin.
description: ApJ Letters (in press)
title: „UND WER SCHÜTZT UNS BÜRGER????“ : Über das Verhältnis von Ideologie, Affekt und Politik am Beispiel des Facebook-Wahlkampfes der FPÖ
Creators: name: Mitterhofer, Hermann
name: Fritsche, Martin
name: Vogler, Tanja
name: Madlung, Fabian
name: Brandmayr, Michael
Publisher: name: DuEPublico: Duisburg-Essen Publications Online, University of Duisburg-Essen, Germany
Year: 2020

description: Amid today's controversial discussions about the relationship between politics and truth our paper aims at demonstrating some of the main principles of establishing this relationship in right-wing populist discourse. Therefore we analyze an example of constructing a political antagonism on the facebook page of the far-right Freedom Party of Austria (FPÖ) leader Heinz-Christian Strache during his election campaign for the Austrian legislative election in 2017. The concept of antagonism we refer to stems from Ernesto Laclau. In combination with Louis Althusser's concept of ideology it provides valuable insights into the process of the interpellation of subjects as enemies and also victims. To describe this process we address the question how emotionalization works within the Facebook-Postings by means of text and pictures, which, according to Link, can take the form of collective symbols. These collective symbolic orders contribute to deepen the understanding of the relations between the ideological, emotional and the political.
title: GNSS Limitations During Position Determination and Receiver Rerformance Testing Using Android Mobile Application
Creators: name: Čaušević, Samir
name: Šimić, Edvin
name: Kalem, Aida
name: Selimović, Adisa
Publisher: name: TEM Journal
Year: 2020

description: Wide GNSS (Global Navigation Satellite System) availability has its advantages, however, in that case the system is exposed to a large number of external influences, from interference with other signals to deliberate blocking and jamming. There is also a huge increase in GNSS user number for both professional and private purposes. The technology of protection and regulation is partly behind the technological development and leaves room for undesired impacts from both natural and artificial causes. Through this paper GNSS errors are described using an android mobile application, "GNSS Analysis Tool", that allows observation of the GNSS signal characteristics.
title: Polynomial Neural Networks Versus Other Spam Email Filters: An Empirical Study
Creators: name: Al-Tahrawi, Mayy
name: Abualhaj, Mosleh
name: Al-Khatib, Sumaya
Publisher: name: TEM Journal
Year: 2020

description: Spam or junk e-mail problems are increasing exponentially due to the huge growth of internet users and their high dependency on e-mails as the main communication means nowadays. Such problems result in huge amounts of time and cost waste for both individuals and organizations. This research paper directly compares the performance of four famous text classification algorithms in classifying emails and detecting the spam ones: Polynomial Neural Networks (PNNs), the k-nearest neighbour (k-NN), Support Vector Machines (SVM) and Naïve Bayes (NB). Results of the experiments conducted on Lingspam, the benchmark E-mail corpus, in this research work reveals that PNNs is a competitive spam filter to the sate-of-the-art spam filters. It recorded either equal or superior results in most of the performance measures used to evaluate the four spam filters.
Additional file 5 of Population size as a major determinant of mating system and population genetic differentiation in a narrow endemic chasmophyte
Creators: name: Surina, Boštjan
name: Balant, Manica
name: Glasnović, Peter
name: Radosavljević, Ivan
name: Fišer, Živa
name: Fujs, Nataša
name: Castro, Sílvia
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5.
Additional file 1 of Chronic skin ultraviolet irradiation induces transcriptomic changes associated with microglial dysfunction in the hippocampus
Creators: name: Yoon, Kyeong-No
name: Kim, Yujin
name: Cui, Yidan
name: Ji, Jungeun
name: Park, Gunhyuk
name: Chung, Jin Ho
name: Lee, Yong-Seok
name: An, Joon-Yong
name: Lee, Dong Hun
Publisher: name: figshare
Year: 2023
Subjects: subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. Additional Materials and Methods.
title: A Survey of KNX Implementation in Building Automation
Creators: name: Sapundzhi, Fatima
Publisher: name: TEM Journal
Year: 2020

description: The smart technologies are becoming more important in many applicative scenarios such as healthcare, environmental monitoring and building automation. The main goal of this work is to investigate a KNX-based home automation system. Such technical systems can be remotely monitored and controlled. By the use of KNX, technical data can be collected and made available at desired location.
Nematic and meta-nematic transitions in the iron pnictides
Creators: name: Kasahara, S.
name: Shi, H. J.
name: Hashimoto, K.
name: Tonegawa, S.
name: Mizukami, Y.
name: Shibauchi, T.
name: Sugimoto, K.
name: Fukuda, T.
name: Terashima, T.
name: Nevidomskyy, Andriy H.
name: Matsuda, Y.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Strongly interacting electrons can exhibit novel collective phases, among which the electronic nematic phases are perhaps the most surprising as they spontaneously break rotational symmetry of the underlying crystal lattice. The electron nematicity has been recently observed in the iron-pnictide and cuprate high-temperature superconductors. Whether such a tendency of electrons to self-organise unidirectionally has a common feature in these superconductors is, however, a highly controversial issue. In the cuprates, the nematicity has been suggested as a possible source of the pseudogap phase, whilst in the iron-pnictides, it has been commonly associated with the tetragonal-to-orthorhombic structural phase transition at $T_s$. Here, we provide the first thermodynamic evidence in BaFe2(As1-xPx)2 that the nematicity develops well above the structural transition and persists to the nonmagnetic superconducting regime, resulting in a new phase diagram strikingly similar to the pseudogap phase diagram in the cuprates. Our highly sensitive magnetic anisotropy measurements using microcantilever torque-magnetometry under in-plane field rotation reveal pronounced two-fold oscillations, which break the tetragonal symmetry. Combined with complementary high-resolution synchrotron X-ray and resistivity measurements, our results consistently identify two distinct temperatures - one at $T^{\ast}$, signifying a true nematic transition, and the other at $T_s (< T^{\ast})$, which we show to be not a true phase transition, but rather what we refer to as a "meta-nematic transition", in analogy to the well-known metamagnetic transition in the theory of magnetism. Our observation of the extended nematic phase above the superconducting dome establishes that the nematicity has primarily an electronic origin, inherent in the normal state of high-temperature superconductors.
description: See the Nature website for the published version with more detailed doping dependence and discussions
Ein Gefäßbruchstück mit eingestempelten Verzierungen aus einer pannonischen Töpferei
Creators: name: Karnitsch, Paul
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2018

description: -
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 35, Nr. 1/2 (1957)
Sharing economy as an alternative proposal to fast fashion
Creators: name: Ruiz-Navarro, Ramon
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 380102
subject: Behavioural economics
classificationCode: 380105
subject: Environment and resource economics
classificationCode: 389902
subject: Ecological economics
classificationCode: 380202
subject: Econometric and statistical methods
classificationCode: 380399
subject: Economic theory not elsewhere classified

description: This doctoral thesis analyzes people's attitude and behavior towards the sharing economy, specifically in relation to clothing exchange platforms, as an alternative proposal to fast fashion. The objective is to understand the factors and variables that influence the adoption of this type of sharing economy and develop a model that explains this process. The SEM methodology (structural equations) has been used to analyze the variables empirically. The study is based on the framework of consumer behavior and technological innovations. The work investigates the background of consumer attitudes and intentions on these platforms and seeks to understand whether the reasons for their use are economic, environmental, or social. The proposed model has also considered the extraordinary influence of COVID-19 on behavioral intention. Likewise, the research contributes to knowledge in the field of human behavior and offers a new perspective on the consumer in the sharing economy. Taken together, this research addresses an underexplored area and is important for understanding and promoting the adoption of the sharing economy in the context of fashion.
Additional file 6 of Population size as a major determinant of mating system and population genetic differentiation in a narrow endemic chasmophyte
Creators: name: Surina, Boštjan
name: Balant, Manica
name: Glasnović, Peter
name: Radosavljević, Ivan
name: Fišer, Živa
name: Fujs, Nataša
name: Castro, Sílvia
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6.
title: Development of xG Active Mobile Networks
Creators: name: Varga, Matija
Publisher: name: TEM Journal
Year: 2020

description: The first part of the research aims to: describe theoretical concepts of 5G connection, list the advantages and disadvantages, give examples of 5G connection in science and technology. The second part of the paper identifies the key aspects of the survey: what cellphone respondents use, what active network they use, whether they know what the Air Flash 5G Microwave Enterprise Solution is, whether they know that they will perform authentication on the 5G network because of the new architecture between third parties, whether storing configuration secrets in plain, unencrypted text can cause system vulnerability, agree with the statement that a 5G connection will increase the possibility of accelerated attack on mobile devices, whether the 6G network will soon be implemented and when it could be used for commercial purposes, which is the opinion of the respondents about the possibilities of implementing the latest generation of 7G network.
Change in Juvenile Offending Versatility Predicted by Individual, Familial, and Environmental Risks
Creators: name: Wallner, Susanne
name: Thomas, Hoben
name: Stemmler, Mark
Publisher: name: International Journal of Conflict and Violence (IJCV)
Year: 2021

description: Developmental and life-course criminology elucidate the developmental course and change of antisociality over time, considering that longitudinal trajectories differ. Specific relations between risks and different antisociality outcomes are emphasized. We assume that adolescents have different longitudinal trajectories considering the change of offending over time and that risks contribute variably to offending pathways. The current study is based on a German research project in which adolescents (N = 577) were interviewed in two German cities. Based on self-reported crime data, we utilized the slope values of offending versatility (OV) over time as outcome values in regression mixture models capturing the trends for participants over age and exhibiting two components of offending adolescents. We explored the contribution of different risks to OV, defining specific risk patterns: Acceptance of violence and peer delinquency have significant negative effects on the emergence of OV within the group of adolescents with decreasing OV. Acceptance of violence has a significant negative effect, and corporal punishment has a significant positive effect on the emergence of OV within the group of adolescents with increasing or rather stable OV. The results underline the relevance of the violence-related risk factor corporal punishment for the emergence of OV within the last-mentioned group.
description: International Journal of Conflict and Violence (IJCV), Bd. 15 (2021)
Routing quantum information in spin chains
Creators: name: Paganelli, Simone
name: Lorenzo, Salvatore
name: Apollaro, Tony J. G.
name: Plastina, Francesco
name: Giorgi, Gian Luca
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Two different models for performing efficiently routing of a quantum state are presented. Both cases involve an XX spin chain working as data bus and additional spins that play the role of sender and receivers, one of which is selected to be the target of the quantum state transmission protocol via a coherent quantum coupling mechanism making use of local/global magnetic fields. Quantum routing is achieved, in the first of the models considered, by weakly coupling the sender and the receiver to the data bus. In the second model, strong magnetic fields acting on additional spins located between the sender/receiver and the data bus allow us to perform high fidelity routing.
description: added references in v2
Archäologische Randbemerkungen zur Paläolithstation Treis-Lumda in Oberhessen
Creators: name: Krüger, Herbert
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2018

description: -
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 35, Nr. 3/4 (1957)
On the relation between the Einstein field equations and the Jacobi-Ricci-Bianchi system
Creators: name: Bergh, Norbert Van den
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The 1+3 covariant equations, embedded in an extended tetrad formalism and describing a space-time with an arbitrary energy-momentum distribution, are reconsidered. It is shown that, provided the 1+3 splitting is performed with respect to a generic timelike congruence with tangent vector u, the Einstein field equations can be regarded as the integrability conditions for the Jacobi and Bianchi equations together with the Ricci equations for u. The same conclusion holds for a generic null congruence in the Newman-Penrose framework.
description: 15 pages; more references added and typos corrected
Eva Kocziszky und Jörn Lang (Herausgeber), Tiefenwärts. Archäologische Imaginationen von Dichtern
Creators: name: Ehling, Kay
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Rezension zu: Eva Kocziszky und Jörn Lang (Herausgeber), Tiefenwärts. Archäologische Imaginationen von Dichtern. Zaberns Bildbände zur Archäologie. Sonderbände der Antiken Welt. Verlag Philipp von Zabern, Darmstadt 2013. 176 Seiten mit 63 Abbildungen.
description: Bonner Jahrbücher, Bd. 213.2013(2014): Bonner Jahrbücher
Vortices in Maxwell-Higgs models with a global factor
Creators: name: Andrade, I.
name: Marques, M. A.
name: Menezes, R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper deals with planar vortices in a generalized model that presents a global factor which depends on the scalar field in the Nielsen-Olesen Lagrange density. We show that the system supports a first order framework. Contrary to what occurs with kinks in the line, planar vortices require the presence of constraints that brings modifications into the first order equations. Novel features are unveiled, such as finite energy configurations with infinite energy density at the origin and the presence of parameters that modifies the energy, keeping the solutions unchanged.
description: 6 pages, 4 figures
Additional file 1 of REPAC: analysis of alternative polyadenylation from RNA-sequencing data
Creators: name: Imada, Eddie L.
name: Wilks, Christopher
name: Langmead, Ben
name: Marchionni, Luigi
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology
subject: 60506 Virology

description: Additional file 1: Supplementary Figures.
Additional file 7 of Population size as a major determinant of mating system and population genetic differentiation in a narrow endemic chasmophyte
Creators: name: Surina, Boštjan
name: Balant, Manica
name: Glasnović, Peter
name: Radosavljević, Ivan
name: Fišer, Živa
name: Fujs, Nataša
name: Castro, Sílvia
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7.
On the black hole from merging binary neutron stars: how fast can it spin?
Creators: name: Kastaun, Wolfgang
name: Galeazzi, Filippo
name: Alic, Daniela
name: Rezzolla, Luciano
name: Font, Jose A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The merger of two neutron stars will in general lead to the formation of a torus surrounding a black hole whose rotational energy can be tapped to potentially power a short gamma-ray burst. We have studied the merger of equal-mass binaries with spins aligned with the orbital angular momentum to determine the maximum spin the black hole can reach. Our initial data consists of irrotational binaries to which we add various amounts of rotation to increase the total angular momentum. Although the initial data violates the constraint equations, the use of the constraint-damping CCZ4 formulation yields evolutions with violations smaller than those with irrotational initial data and standard formulations. Interestingly, we find that a limit of $J/M^2 \simeq 0.89$ exists for the dimensionless spin and that any additional angular momentum given to the binary ends up in the torus rather than in the black hole, thus providing another nontrivial example supporting the cosmic censorship hypothesis.
description: 4 pages, 2 figures Version to appear in PRD Rapid Communications
Triality, Periodicity and Stability of SO(8) Gauged Supergravity
Creators: name: Borghese, Andrea
name: Guarino, Adolfo
name: Roest, Diederik
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: While electromagnetic duality is a symmetry of many supergravity theories, this is not the case for the N=8 gauged theory. It was recently shown that this rotation leads to a one-parameter family of SO(8) supergravities. It is an open question what the period of this parameter is. This issue is investigated in the SO(4) invariant sectors of the theory. We classify such critical points and find a novel branch of non-supersymmetric and unstable solutions, whose embedding is related via triality to the two known ones. Secondly, we show that the three branches of solutions lead to a Pi/4 periodicity of the vacuum structure. The general interrelations between triality and periodicity are discussed. Finally, we comment on the connection to other gauge groups as well as the possibility to achieve (non-)perturbative stability around AdS/Mkw/dS transitions.
description: 7 pages, 4 figures. v2: Published version
Performance Analysis Of Neuro Genetic Algorithm Applied On Detecting Proportion Of Components In Manhole Gas Mixture
Creators: name: Ojha, Varun Kumar
name: Dutta, Paramartha
name: Saha, Hiranmay
Publisher: name: arXiv
Year: 2012
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The article presents performance analysis of a real valued neuro genetic algorithm applied for the detection of proportion of the gases found in manhole gas mixture. The neural network (NN) trained using genetic algorithm (GA) leads to concept of neuro genetic algorithm, which is used for implementing an intelligent sensory system for the detection of component gases present in manhole gas mixture Usually a manhole gas mixture contains several toxic gases like Hydrogen Sulfide, Ammonia, Methane, Carbon Dioxide, Nitrogen Oxide, and Carbon Monoxide. A semiconductor based gas sensor array used for sensing manhole gas components is an integral part of the proposed intelligent system. It consists of many sensor elements, where each sensor element is responsible for sensing particular gas component. Multiple sensors of different gases used for detecting gas mixture of multiple gases, results in cross-sensitivity. The cross-sensitivity is a major issue and the problem is viewed as pattern recognition problem. The objective of this article is to present performance analysis of the real valued neuro genetic algorithm which is applied for multiple gas detection.
description: 16 pages,11 figures
Statistical Physics Analysis of Maximum a Posteriori Estimation for Multi-channel Hidden Markov Models
Creators: name: Halder, Avik
name: Adhikary, Ansuman
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences
subject: 82B26, 82B31, 62M05, 94A17

description: The performance of Maximum a posteriori (MAP) estimation is studied analytically for binary symmetric multi-channel Hidden Markov processes. We reduce the estimation problem to a 1D Ising spin model and define order parameters that correspond to different characteristics of the MAP-estimated sequence. The solution to the MAP estimation problem has different operational regimes separated by first order phase transitions. The transition points for $L$-channel system with identical noise levels, are uniquely determined by $L$ being odd or even, irrespective of the actual number of channels. We demonstrate that for lower noise intensities, the number of solutions is uniquely determined for odd $L$, whereas for even $L$ there are exponentially many solutions. We also develop a semi analytical approach to calculate the estimation error without resorting to brute force simulations. Finally, we examine the tradeoff between a system with single low-noise channel and one with multiple noisy channels.
description: The paper has been submitted to Journal of Statistical Physics with submission number JOSS-S-12-00393
Die römischen Grabdenkmäler Kölns
Creators: name: Klinkenberg, Joseph
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 108/109 (1902): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
Mass assembly in quiescent and star-forming galaxies since z=4 from UltraVISTA
Creators: name: Ilbert, O.
name: McCracken, H. J.
name: Fevre, O. Le
name: Capak, P.
name: Dunlop, J.
name: Karim, A.
name: Renzini, M. A.
name: Caputi, K.
name: Boissier, S.
name: Arnouts, S.
name: Aussel, H.
name: Comparat, J.
name: Guo, Q.
name: Hudelot, P.
name: Kartaltepe, J.
name: Kneib, J. P.
name: Krogager, J. K.
name: Floc'h, E. Le
name: Lilly, S.
name: Mellier, Y.
name: Milvang-Jensen, B.
name: Moutard, T.
name: Onodera, M.
name: Richard, J.
name: Salvato, M.
name: Sanders, D. B.
name: Scoville, N.
name: Silverman, J.
name: Taniguchi, Y.
name: Tasca, L.
name: Thomas, R.
name: Toft, S.
name: Tresse, L.
name: Vergani, D.
name: Wolk, M.
name: Zirm, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We estimate the galaxy stellar mass function and stellar mass density for star-forming and quiescent galaxies with 0.210^10.7Msun. For the mass function of the quiescent galaxies, we do not find any significant evolution of the high-mass end at z<1; however we observe a clear flattening of the faint-end slope. From z~3 to z~1, the density of quiescent galaxies increases over the entire mass range. Their comoving stellar mass density increases by 1.6 dex between z~3 and z~1 and by less than 0.2dex at z<1. We infer the star formation history from the mass density evolution and we find an excellent agreement with instantaneous star formation rate measurements at z<1.5, while we find differences of 0.2dex at z>1.5 consistent with the expected uncertainties. We also develop a new method to infer the specific star formation rate from the mass function of star-forming galaxies. We find that the specific star formation rate of 10^10Msun galaxies increases continuously in the redshift range 1
description: 20 pages, 17 figures, Accepted for publication in A&A
Verena Schaltenbrand Obrecht, Stilus. Kulturhistorische, typologisch chronologische und technologische Untersuchungen an römischen Schreibgriffeln von Augusta Raurica und weiteren Fundorten
Creators: name: Gottschalk, Raymund
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Rezension zu: Verena Schaltenbrand Obrecht, Stilus. Kulturhistorische, typologisch chronologische und technologische Untersuchungen an römischen Schreibgriffeln von Augusta Raurica und weiteren Fundorten. Mit Beiträgen von María Luisa Fernández, Philippe Fluzin, Patrick Guillot, Eduard Schaller, René Schaltenbrand, Willem B. Stern und Yvonne Gerber sowie Peter Wyss. Forschungen in Augst, Band 45, 1–2. Selbstverlag Augusta Raurica, Augst 2012. 794 Seiten, davon Textband 332 Seiten mit 325 vielfach farbigen Abbildungen, Katalog- und Tafelband mit 458 Seiten und 209 Tafeln.
description: Bonner Jahrbücher, Bd. 213.2013(2014): Bonner Jahrbücher
Promoting Women’s Empowerment Through Grassroots Solidarity: A Case Study of Mothers’ Associations in Benin
Creators: name: Rouhani, Leva
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: Gender equality
Girls' education
Collective organization
Women's empowerment
Africa
Benin

description: In Benin, women in general and rural women in particular are central to the development and sustenance of the household, community, and society at large. Yet, often, they lack the agency, as a result of limited education, life skills, and resources, to contribute to community development, or the structures in place (laws, religious beliefs, policies, and institutions) limit women’s ability to participate in community development. As a result of their limited agency and the unequal structures in society, women in Benin have often been denied participation in decisions around education, health, economy, and agriculture. While women are key actors in all these sectors, they are often not represented sufficiently in the discussions that shape their lives. Women in Benin have collectively organized into associations to address these issues. Associations such as Mothers Associations (MAs) in Benin, have emerged with the specific purpose of improving the education of their daughters. MAs function under the umbrella of Parent Associations (PAs) to address issues of particular concern to girl students. While PAs have helped to improve basic education by putting pressure on school administrators and political leaders to address the quality of schools, these associations have been primarily male dominated, rarely identifying the specific barriers to education for girls. My dissertation has three main objectives: to assess how MAs in Benin have collectively mobilized to enhance the quality of education for schoolgirls; to determine whether MA activities and mobilization efforts have led to women’s empowerment and influence within their respective communities; and to examine whether MAs have had an impact on changing harmful social norms. Overall, the objective of this research is to examine how members of the MAs have used their collective agency to enhance gender equality within the school and community life. Through a critical feminist approach and applying a socio-ecological model, I examine the process in which African women have mobilized, collaborated, and advocated for girls’ education in ways that subtly undermine the harmful relations of power that govern their position in society.