cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Coherent control of a local phonon in trapped ions using dynamical decoupling
Creators: name: Ohira, Ryutaro
name: Kume, Shota
name: Toyoda, Kenji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we present a dynamical decoupling (DD) technique to coherently control the dynamics of a single local phonon in trapped ions. A 2$π$ rotation at a motional sideband transition flips the sign of the relevant local phonon state, resulting in cancellation of the phonon dynamics. In this work, we implement DD using single and multiple blue-sideband pulses to control a single local phonon in two $^{40}{\rm Ca}^{+}$ ions in a linear Paul trap. Our proposed DD technique can be used to engineer coupling between local phonon modes.
description: 8 pages, 6 figures
Text Steganographic Approaches: A Comparison
Creators: name: Agarwal, Monika
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: This paper presents three novel approaches of text steganography. The first approach uses the theme of missing letter puzzle where each character of message is hidden by missing one or more letters in a word of cover. The average Jaro score was found to be 0.95 indicating closer similarity between cover and stego file. The second approach hides a message in a wordlist where ASCII value of embedded character determines length and starting letter of a word. The third approach conceals a message, without degrading cover, by using start and end letter of words of the cover. For enhancing the security of secret message, the message is scrambled using one-time pad scheme before being concealed and cipher text is then concealed in cover. We also present an empirical comparison of the proposed approaches with some of the popular text steganographic approaches and show that our approaches outperform the existing approaches.
description: 16 pages, 6 figures, 5 tables
title: From Waste Heat to Cheese
Creators: name: Heat Pump Center, Cordin Arpagaus
Publisher: name: Heat Pump Centre
Year: 2019

description: A new type of evaporator, falling film, was tested, allowing low refrigerant charges. Under certain conditions, the heat transfer performance was better than for a traditional flooded evaporator. The effects of different refrigerant charges, tube pass arrangements and refrigerant types on the falling film evaporator were analyzed. The results showed that with the increase of refrigerant charge, the heat transfer performance was improved gradually, but the trend was gradually slower. The bottom-to-top tube pass arrangement provided a better performance than the top-to-bottom tube pass arrangement. The falling film evaporation centrifugal chiller with R1233zd (E) provided a higher COP when the refrigerant charge reached a certain amount.
Neutron diffusion in magnetars as a source of astrophysical bursts
Creators: name: Bertulani, C. A.
name: Lobato, R. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Neutron tunneling in neutron star crusts can release enormous amounts of energy on a short timescale. We have clarified aspects of this process occurring in the outer crust regions of neutron stars when oscillations or cataclysmic events changes the crustal ambient density. We report a time-dependent Hartree-Fock-Bogoliubov model to determine the rate of neutron diffusion and conclude that a large amount of energy, in the range of 10^40 - 10^44 erg, can be released rapidly. We suggest that this mechanism may be the source of hitherto unknown phenomena such as the Fast Radio Bursts (FRBS).
description: 10 pages, 4 figures, contribution to the XLIV Brazilian Workshop on Nuclear Physics to be published by the IOP
Conformal Blocks and Bilocal Vertex Operator Transition Amplitudes
Creators: name: Vos, Gideon
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We revisit the construction of the 2d conformal blocks of primary operator four-point functions as bilocal vertex operator correlators. We find an additional interpretation as a path integral over the reparametrizations of an intermediate cylinder. As a consequence we bridge the gap between the Kähler quantization of virasoro coadjoint orbits, $SL(2,\mathbb{R})$ Chern-Simons theory and the reparametrization formalism of 2d CFT that has made an appearance in recent literature.
description: 16 pages + appendix, 5 figures
Comments on Summing over Bordisms in TQFT
Creators: name: Banerjee, Anindya
name: Moore, Gregory W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent works in quantum gravity, motivated by the factorization problem and baby universes, have considered sums over bordisms with fixed boundaries in topological quantum field theory (TQFT). We discuss this construction and observe a curious splitting formula for the total amplitude.
description: 48 pages, 5 figures
DAMP: Doubly Aligned Multilingual Parser for Task-Oriented Dialogue
Creators: name: Held, William
name: Hidey, Christopher
name: Liu, Fei
name: Zhu, Eric
name: Goel, Rahul
name: Yang, Diyi
name: Shah, Rushin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Modern virtual assistants use internal semantic parsing engines to convert user utterances to actionable commands. However, prior work has demonstrated that semantic parsing is a difficult multilingual transfer task with low transfer efficiency compared to other tasks. In global markets such as India and Latin America, this is a critical issue as switching between languages is prevalent for bilingual users. In this work we dramatically improve the zero-shot performance of a multilingual and codeswitched semantic parsing system using two stages of multilingual alignment. First, we show that constrastive alignment pretraining improves both English performance and transfer efficiency. We then introduce a constrained optimization approach for hyperparameter-free adversarial alignment during finetuning. Our Doubly Aligned Multilingual Parser (DAMP) improves mBERT transfer performance by 3x, 6x, and 81x on the Spanglish, Hinglish and Multilingual Task Oriented Parsing benchmarks respectively and outperforms XLM-R and mT5-Large using 3.2x fewer parameters.
description: 9 Pages; ACL Main Conference 2023
title: The Added Value of Heat Pumps for Grid Stability via Demand Response
Creators: name: Heat Pump Center, Anke Uytterhoeven
Publisher: name: Heat Pump Centre
Year: 2019

description: As a consequence of the energy transition, the share of electricity generated from variable, intermittent (and hence less manageable) renewable energy sources (RES) is rising considerably. In order to still guarantee the required quasi-instantaneous balance between supply and demand, there is a clear need for demand side flexibility. One
 interesting application field offering a great potential for demand side flexibility is the residential heating sector, with heat pumps (HP) coupled to thermal energy storage (TES) as one of the key technologies. This article aims at
 illustrating what can be done in terms of demand response (DR) with heat pumps, by discussing results from research,
 demonstration projects, and even commercial cases.
Search for rare decays of $D^0$ mesons into two muons
Creators: name: LHCb Collaboration
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for the very rare $D^0 \to μ^+μ^-$ decay is performed using data collected by the LHCb experiment in proton-proton collisions at $\sqrt{s} = 7$, 8 and $13~\rm{TeV}$, corresponding to an integrated luminosity of $9~\rm{fb^{-1}}$. The search is optimised for $D^0$ mesons from $D^{\ast+}\to D^0π^+$ decays but is also sensitive to $D^0$ mesons from other sources. No evidence for an excess of events over the expected background is observed. An upper limit on the branching fraction of this decay is set at $\mathcal{B}(D^0 \to μ^+μ^-) < 3.1 \times 10^{-9}$ at a $90\%$ CL. This represents the world's most stringent limit, constraining models of physics beyond the Standard Model.
description: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-029.html (LHCb public pages)
M dwarf companions to white dwarfs I: relating magnetic activity, rotation and age
Creators: name: Rebassa-Mansergas, A.
name: Schreiber, M. R.
name: Gaensicke, B. T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We make use of the largest and most homogeneous sample of white dwarf/M dwarf (WD/dM) binaries from the Sloan Digital Sky Survey (SDSS DR7) to investigate relations between magnetic activity, rotation, magnetic braking and age in M stars. These relations are studied separately for close WD/dM binaries that underwent a common envelope phase and thus contain tidally locked and hence rapidly rotating M dwarfs, and for wide WD/dM binaries that never interacted. For the wide WD/dM binary sample we find that the M dwarf activity fractions are significantly higher than those measured in single M stars of spectral type M0 to M5. We attribute this effect as a consequence of M dwarfs in wide SDSS WD/dM binaries being, on average, significantly younger and hence more active than the field M dwarf population. The measured M dwarf activity fractions in wide WD/dM binaries show as well a significant increase from spectral types M3 to M5, where these low-mass stars become fully convective. This provides additional observational evidence for magnetic braking being less efficient below the fully convective boundary, in agreement with the hypothesis of fully convective stars having considerably longer activity lifetimes than partially convective stars. The M dwarfs in all our close binaries are active, independently of the spectral type, giving robust observational evidence for magnetic activity being enhanced due to fast rotation. The rotational velocities of the M dwarfs in our close binary sample are significantly higher than seen among field M dwarfs, however the strength of magnetic activity remains saturated at log LHalpha/Lbol approximately -3.5. This unambiguously confirms the M dwarf saturation-type rotation-activity relation.
description: 9 pages, 6 figures, accepted for publication at MNRAS
Gauge Invariant Perturbations of General Spherically Symmetric Spacetimes
Creators: name: Liu, Wentao
name: Fang, Xiongjun
name: Jing, Jiliang
name: Wang, Anzhong
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, the gauge choices in general spherically symmetric spacetimes have been explored. We construct the gauge invariant variables and the master equations for both the Detweiler easy gauge and the Regge-Wheeler gauge, respectively. The particular cases for $l=0,1$ are also been investigated. Our results provide analytical calculations of metric perturbation in general spherically symmetric spacetimes, which can be applied to various cases, including the Effective-One-Body problem. A simple example is presented to show how the metric perturbation components are related to the source perturbation terms.
description: 27 pages, Accepted for publication in Sci. China, Phys. Mech. Astron
Bubble universes and traversable wormholes
Creators: name: Lemos, José P. S.
name: Luz, Paulo
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Bubble universes and traversable wormholes in general relativity can be realized as two sides of the same concept. To exemplify, we find, display, and study in a unified manner a Minkowski-Minkowski closed universe and a Minkowski-Minkowski traversable wormhole. By joining two 3-dimensional flat balls along a thin shell two-sphere of matter, i.e., a spherical domain wall, into a single spacetime one gets a Minkowski-Minkowski static closed universe, i.e., a bubble universe. By joining two 3-dimensional complements of flat balls along a thin shell two-sphere of matter, i.e., a spherical throat, into a single spacetime one gets a Minkowski-Minkowski static open universe which is a traversable wormhole. Thus, Minkowski-Minkowski bubble universes and wormholes can be seen as complementary. It is also striking that these two spacetimes have resemblances with two well-known static universes. The Minkowski-Minkowski static closed universe resembles the Einstein universe, a static closed spherical universe homogeneously filled with dust matter and with a cosmological constant. The Minkowski-Minkowski static open universe resembles the Friedmann static universe, a static open hyperbolic universe homogeneously filled with negative energy density dust and with a negative cosmological, a universe with two disjoint branes that can be considered a failed wormhole. In this light, the Einstein and Friedmann universes are also two sides of the same concept. A linear stability analysis for all these spacetimes is performed. The complementarity between bubble universes and traversable wormholes, that exists for these static spacetimes, can be can carried out for dynamical spacetimes, indicating that such a complementarity is general. The study suggests that bubble universes and traversable wormholes can be seen as coming out of the same concept, and thus, if ones exist the others should also exist.
description: 24 pages, 8 figures
Calorimetric evidence for two phase transitions in Ba$_{\rm 1-x}$K$_{\rm x}$Fe$_{2}$As$_{2}$ with fermion pairing and quadrupling states
Creators: name: Shipulin, Ilya
name: Stegani, Nadia
name: Maccari, Ilaria
name: Kihou, Kunihiro
name: Lee, Chul-Ho
name: Li, Yongwei
name: Hühne, Ruben
name: Klauss, Hans-Henning
name: Putti, Marina
name: Caglieris, Federico
name: Babaev, Egor
name: Grinenko, Vadim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Theoretically, materials that break multiple symmetries allow, under certain conditions, the formation of four-fermion condensates above the superconducting critical temperature. Such states can be stabilized by phase fluctuations. Recently a fermionic quadrupling condensate that breaks the $Z_2$ time-reversal symmetry was reported in Ba$_{\rm 1-x}$K$_{\rm x}$Fe$_{2}$As$_{2}$ [V. Grinenko et al., Nat. Phys. 17, 1254 (2021)]. Evidence for the new state of matter comes from muon-spin rotation, transport, thermoelectric, and ultrasound experiments. Observing a specific heat anomaly is a very important signature of a transition to a new state of matter. However, a fluctuation-induced specific heat singularity is usually very challenging to resolve from a background of other contributions. Here, we report on detecting two anomalies in the specific heat of Ba$_{\rm 1-x}$K$_{\rm x}$Fe$_{2}$As$_{2}$ at zero magnetic field. The anomaly at the higher temperature is accompanied by the appearance of a spontaneous Nernst effect, indicating broken time-reversal ($Z_2$) symmetry. The second anomaly at the lower temperature coincides with the transition to a zero resistance state, indicating superconductivity breaking the $U(1)$ gauge symmetry. Our data provide calorimetric evidence for the $Z_2$ phase formation above the superconducting phase transition.
description: 12 pages, 3 figures and Supplementary information
Classical and quantum walks on paths associated with exceptional Krawtchouk polynomials
Creators: name: Miki, Hiroshi
name: Tsujimoto, Satoshi
name: Vinet, Luc
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 33C45, 81P45

description: Classical and quantum walks on some finite paths are introduced. It is shown that these walks have explicit solutions given in terms of exceptional Krawtchouk polynomials and their properties are explored. In particular, fractional revival is shown to take place in the corresponding quantum walks.
description: 22 pages, 4 figures
Tidal disruption rate suppression by the event horizon of spinning black holes
Creators: name: Huang, Hao-Tse
name: Lu, Wenbin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The rate of observable tidal disruption events (TDEs) by the most massive black holes (BHs) is suppressed due to direct capture of stars by the event horizon. This suppression effect depends on the shape of the horizon and holds the promise of probing the spin distribution of dormant BHs at the centers of galaxies. By extending the frozen-in approximation commonly used in the Newtonian limit, we propose a general relativistic criterion for the tidal disruption of a star of given interior structure. The rate suppression factor is then calculated for different BH masses, spins, and realistic stellar populations. We find that either a high BH spin (> 0.5) or a young stellar population (< 1 Gyr) allows TDEs to be observed from BHs significantly more massive than 10^8 solar masses. We call this spin-age degeneracy (SAD). This limits our utility of the TDE rate to constrain the BH spin distribution, unless additional constraints on the age of the stellar population or the mass of the disrupted star can be obtained by modeling the TDE radiation or the stellar spectral energy distribution near the galactic nuclei.
description: 19 pages, 14 figures, 3 tables; submitted to MNRAS
D meson production in Pb-Pb collisions with the ALICE detector
Creators: name: Russo, Riccardo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Open heavy-flavour hadrons are a powerful tool to investigate the properties of the high-density medium created in heavy-ion collisions at high energies as they come from the hadronization of heavy quarks. The latter are created in the early stage of the interaction and experience the whole collision history. Heavy quarks in-medium energy loss can be investigated by comparing the heavy-flavour production cross sections in p-p and nucleus-nucleus collisions. In addition, initial spatial anisotropy of the fireball is converted into momentum anysotropy of final state particles, in particular the elliptic flow. D mesons are identifed from their hadronic decays which can be reconstructed in the central rapidity region using the tracking and PID detectors of the ALICE detector.
title: Development and Use of a Novel Main Hawaiian Islands Bathymetric and Backscatter Synthesis in a Stratified Fishery-Independent Bottomfish Survey
Creators: name: Richards, Benjamin (Benjamin L.)
name: Smith, John R.
name: Smith, Steven G. (Steven Glen)
name: Ault, Jerald S.
name: Kelley, Christopher D.
name: Moriwake, Virginia N.
Publisher: name: Pacific Islands Fisheries Science Center (U.S.)
Year: 2019

description: NOAA technical memorandum NMFS-PIFSC ; 87
Understanding Concept Identification as Consistent Data Clustering Across Multiple Feature Spaces
Creators: name: Lanfermann, Felix
name: Schmitt, Sebastian
name: Wollstadt, Patricia
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Identifying meaningful concepts in large data sets can provide valuable insights into engineering design problems. Concept identification aims at identifying non-overlapping groups of design instances that are similar in a joint space of all features, but which are also similar when considering only subsets of features. These subsets usually comprise features that characterize a design with respect to one specific context, for example, constructive design parameters, performance values, or operation modes. It is desirable to evaluate the quality of design concepts by considering several of these feature subsets in isolation. In particular, meaningful concepts should not only identify dense, well separated groups of data instances, but also provide non-overlapping groups of data that persist when considering pre-defined feature subsets separately. In this work, we propose to view concept identification as a special form of clustering algorithm with a broad range of potential applications beyond engineering design. To illustrate the differences between concept identification and classical clustering algorithms, we apply a recently proposed concept identification algorithm to two synthetic data sets and show the differences in identified solutions. In addition, we introduce the mutual information measure as a metric to evaluate whether solutions return consistent clusters across relevant subsets. To support the novel understanding of concept identification, we consider a simulated data set from a decision-making problem in the energy management domain and show that the identified clusters are more interpretable with respect to relevant feature subsets than clusters found by common clustering algorithms and are thus more suitable to support a decision maker.
description: 10 pages, 6 figures, published in proceedings of 2022 IEEE International Conference on Data Mining Workshops (ICDMW)
Nicotiana: Züchtungsforschung und Züchtung [Nicotiana - breeding research and breeding]
Creators: name: Grunewaldt, Jürgen
Publisher: name: Berlin : De Gruyter
Year: 1986
Subjects: subject: Nicotiana
subject: Cytogenetik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::580 | Pflanzen (Botanik)

description: Starting from the description of the structure, number and meiotic behaviour of chromosomes, the evolution of the economically important Nicotiana species is analysed. Flowering, expected fertility, incompatibility and male sterility, seed development, as well as germination, are used as criteria to outline the principles of Nicotiana breeding. The chapter entitled “Sortenzuechtung” (variety breeding) includes a survey of the development of varieties, the breeding material available and that to be established. The application of sterile culture techniques in Nicotiana breeding is discussed. The presentation of the different breeding methods applied includes compilations of released tobacco varieties.
description: Ausgehend von den Strukturen, der Anzahl und dem Meioseverhalten der Chromosomen wird die Abstammung der wirtschaftlich genutzten Nicotiana-Arten aufgezeigt. Die Darstellung der Grundlagen einer züchterischen Veränderung erfolgt anhand des Blühverlaufes, der zu erwartenden Fertilität, der Inkompatibilitäts- und Sterilitätsreaktionen, der Samenbildung und Samenkeimung. Im Abschnitt Sortenzüchtung wird nach einem Überblick über die Entwicklung der Sortenzüchtung das vorhandene und herzustellende Sortenausgangsmaterial beschrieben. Dabei wird auch der Einsatz von Sterilkulturtechniken analysiert. Der Darstellung der verschiedenen Zuchtmethoden sind Übersichten über deren erfolgreiche Anwendung beigefügt.
Nonlinear interaction effects in a strongly driven optomechanical cavity
Creators: name: Lemonde, Marc-Antoine
name: Didier, Nicolas
name: Clerk, Aashish A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider how nonlinear interaction effects can manifest themselves and even be enhanced in a strongly driven optomechanical system. Using a Keldysh Green's function approach, we calculate modifications to the cavity density of states due to both linear and nonlinear optomechanical interactions, showing that strong modifications can arise even for a weak nonlinear interaction. We show how this quantity can be directly probed in an optomechanically-induced transparency type experiment. We also show how the enhanced interaction can lead to nonclassical behaviour, as evidenced by the behaviour of g_2 correlation functions.
description: 5 pages main text, 7 pages supplemental information
Proposed robust and high-fidelity preparation of excitons and biexcitons in semiconductor quantum dots making active use of phonons
Creators: name: Glässl, M.
name: Barth, A. M.
name: Axt, V. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It is demonstrated how the exciton and the biexciton state of a quantum dot can be prepared with high fidelity on a picosecond time-scale by driving the dot with a strong laser pulse that is tuned above the exciton resonance for exciton preparation and in resonance with the exciton transition for biexciton preparation. The proposed schemes make use of the phonon-induced relaxation towards photon dressed states in optically driven quantum dots and combine the simplicity of Rabi flopping with the robustness of adiabatic rapid passage schemes. Our protocols allow for an on-demand, fast and almost perfect state preparation even at strong carrier-phonon interaction where other schemes fail. In fact, the performance of the presented protocols is shown to be the better the stronger the carrier-phonon interaction is.
title: Prozesse denken
title: Conceiving processes
titleType: AlternativeTitle
Creators: name: Buchert, Margitta
Publisher: name: Berlin : Jovis
Year: 2018
Subjects: subject: Reflexive Design
subject: Reflexive processes
subject: Processes of design and research
subject: Process design
subject: Design research
subject: Design knowledge
subject: Reflexives Entwerfen
subject: Reflexive Prozesse
subject: Entwurfsprozesse
subject: Forschungsprozesse
subject: Prozessgestaltung
subject: Entwurfsforschung
subject: Entwurfswissen
subject: Konferenzschrift
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::720 | Architektur

description: Aus dem schier unendlichen Fragenpotential zu Prozessen und Prozesseigenschaften im Zusammenhang mit dem Reflexiven Entwerfen filtert dieser Beitrag einige übergreifende Aspekte heraus, die eine Annäherung an das bedeutsame Thema erlauben. Neben den Prozessen des Entwerfens und Forschens, werden „Prozessgestalt“, „Komplexe Ordnung“ oder auch „Metamorphosen des Erkennens“ skizzenhaft umrahmt. Die Intention ist es, darzulegen, mit welchen Ansatzpunkten die Fokussierung von Prozessen impulsgebend wirkt, um innovative Forschungsweisen aus dem Entwurfsbereich aufzuzeigen und zu stimulieren. Die daraus erwachsenden Wissensbestände werden umrissen, um damit nicht zuletzt die weitere forschende Qualifizierung und zukunftsfähige räumlich-physische Gestaltungshandlungen im Lebensumfeld des Menschen anzufeuern.
description: From the sheer endless potential for questions about processes and process properties in connection with Reflexive Design, this article filters out some overarching aspects that allow an approach to the significant topic. The processes of designing and researching, "Process Shape", "Complex Order" or even "Metamorphoses of cognition" are addressed within an outlined framework. The intention is to show with which reference points the focusing on processes can provide impetus, in order to present and stimulate innovative research methods from the field of design. The resulting bodies of knowledge are outlined not least to spur on the further research-related qualification and viable future spatial-physical design actions in the human living environment.
Topologically Protected Edge States in Triangular Lattices
Creators: name: Davis, Robert J.
name: Zhou, Yun
name: Bisharat, Dia'aaldin J.
name: Bandaru, Prabhakar R.
name: Sievenpiper, Daniel F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We describe the possibility for topologically robust edge states existing on interfaces of triangular lattices which are supported by rotational symmetries that are sensitive to boundary conditions. Such states are trivial from the perspective of Berry curvature, but result instead from an interplay between crystalline symmetries and finite boundary effects. Regardless, we show such states are in a distinct topological phase, provided the gauge-dependent symmetries are maintained. Such a model describes a number of recent bosonic experimental demonstrations on triangular lattices, the physics for which has thus far eluded explanation.
description: 12 pages, 10 figures. Accepted to Physical Review B
Indian Summer - Party Affiliation in the 21st Century
Creators: name: Becker, Philipp
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: Party politics
subject: Multi-speed membership
subject: Political party members
subject: Politische Parteien
subject: Multi-Speed Mitgliedschaft
subject: Parteimitglieder
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::320 | Politik

description: Multi-speed membership parties are said to shift the boundaries of political parties by incorporating affiliates of all sorts into the narrative of membership. Building on this concept of a diverse, inclusive, and individually adaptive understanding of political party support, Indian Summer re-evaluates the relationship between polit- ical parties and individuals in the age of internet-based communication technologies and growing sociological diversification. Data of the accompanying population sur- vey of the 2017 German Party Members Survey is used to address questions of who it is that contributes to the success or breakdown of a party, what individuals do, and what the underlying demographic, motivational, and psychological patterns are. The study finds that non-membership based party affiliation plays a crucial role in 21st century party politics, especially due to the mass of affiliates compared to traditional members. Moreover, traditional party members and affiliates differ remarkably in terms of socio-demographic characteristics, which is especially impor- tant in the light of representative democracy. Additionally, it is argued that recent political parties’ bearing structure is best described using seven distinct types of affiliates. Due to the inner structure of affiliation types, this taxonomy challenges the multi-speed membership model and sees formal membership as the continuing center of gravity for political parties. Yet, profiles of more loosely linked affiliates indicate that parties may have to deal with eroding ties in the future and over-think their modus operandi, which might mirror the functions of US American parties in the future.
Asynchronous Probabilistic Couplings in Higher-Order Separation Logic
Creators: name: Gregersen, Simon Oddershede
name: Aguirre, Alejandro
name: Haselwarter, Philipp G.
name: Tassarotti, Joseph
name: Birkedal, Lars
Publisher: name: arXiv
Year: 2023
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Probabilistic couplings are the foundation for many probabilistic relational program logics and arise when relating random sampling statements across two programs. In relational program logics, this manifests as dedicated coupling rules that, e.g., say we may reason as if two sampling statements return the same value. However, this approach fundamentally requires aligning or "synchronizing" the sampling statements of the two programs which is not always possible. In this paper, we develop Clutch, a higher-order probabilistic relational separation logic that addresses this issue by supporting asynchronous probabilistic couplings. We use Clutch to develop a logical step-indexed logical relational to reason about contextual refinement and equivalence of higher-order programs written in a rich language with higher-order local state and impredicative polymorphism. Finally, we demonstrate the usefulness of our approach on a number of case studies. All the results that appear in the paper have been formalized in the Coq proof assistant using the Coquelicot library and the Iris separation logic framework.
Mixed conducting perovskites and their solid state chemistry
Creators: name: Martynczuk, Julia-Maria
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Perovskite
subject: microstructure
subject: electron microscopy
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Nonlocal signatures of hybridization between quantum dot and Andreev bound states
Creators: name: Pöschl, Andreas
name: Danilenko, Alisa
name: Sabonis, Deividas
name: Kristjuhan, Kaur
name: Lindemann, Tyler
name: Thomas, Candice
name: Manfra, Michael J.
name: Marcus, Charles M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate local and nonlocal signatures of hybridization between a quantum dot state and an extended Andreev bound state (ABS) in a gate-defined InAs nanowire with multiple side probes. When a quantum dot in one of the side probes was hybridized with an ABS in the nanowire, a characteristic spectroscopic pattern was observed both locally, i.e., in the probe with the quantum dot, and nonlocally, in the tunnel conductance of a remote probe. Nonlocal signatures of hybridization reveal the extended nature of the ABS.
Performance of Spatial Modulation using Measured Real-World Channels
Creators: name: Younis, Abdelhamid
name: Thompson, William
name: Di Renzo, Marco
name: Wang, Cheng-Xiang
name: Beach, Mark A.
name: Haas, Harald
name: Grant, Peter M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, for the first time real-world channel measurements are used to analyse the performance of spatial modulation (SM), where a full analysis of the average bit error rate performance (ABER) of SM using measured urban correlated and uncorrelated Rayleigh fading channels is provided. The channel measurements are taken from an outdoor urban multiple input multiple output (MIMO) measurement campaign. Moreover, ABER performance results using simulated Rayleigh fading channels are provided and compared with a derived analytical bound for the ABER of SM, and the ABER results for SM using the measured urban channels. The ABER results using the measured urban channels validate the derived analytical bound and the ABER results using the simulated channels. Finally, the ABER of SM is compared with the performance of spatial multiplexing (SMX) using the measured urban channels for small and large scale MIMO. It is shown that SM offers nearly the same or a slightly better performance than SMX for small scale MIMO. However, SM offers large reduction in ABER for large scale MIMO.
description: IEEE Vehicular Technology Conference Fall 2013 (VTC-Fall 2013), Accepted
Sanguisorba
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. officüialis L. Cat. 139. Obere Höhengrenze festzustellen. Die Angaben des Cat.: 2300 m, und «pentes du St-Bernard jusqu'ä2300m» sindzu streichen. Tissiere, GuideS.4l (1868) hat die Art gar nicht; er gibt vom Gr. St.Bernhardnur S.mmor (unter demNamenPoterium, Sanguisorba)anundsagtvondieser:«pasaudessus de 2300 metres». Es scheint, dass JACCARD dieseAngabe versehentlich auf5. officinaUsbezogen hat. 3: Comeire bei Orsieres (Melly); La Fouly (idem); Econe (J.); Nendaz (J.); Itravers im Val de Rechy (M:arietan).- 3a:WestlichMaschahausundoberhalb (Becherer).- 4:Twingenim Binntal(Schmid). Var. pseudomontanadePalezieux- 2: ObLens (P.).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Studies on the $H\rightarrow bb$ cross section measurement at the LHeC with a full detector simulation
Creators: name: Behera, Subhasish
name: Brickwedde, Bernard
name: Schott, Matthias
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The future Large Hadron electron Collider (LHeC) would allow collisions of an intense electron beam with protons or heavy ions at the High Luminosity-Large Hadron Collider (HL-LHC). Owing to a center of mass energy greater than a TeV and very high luminosity (~1 ab{-1}), the LHeC would not only be a new generation collider for deep-inelastic scattering (DIS) but also an important facility for precision Higgs physics, complementary to pp and e+ e- colliders. Previously, it has been found that uncertainties of 0.8% and 7.4% can be achieved on the Higgs boson coupling strength to b- and c-quarks respectively. These results were obtained in the fast simulation frameworks for the LHeC detector. Focusing on the dominant Higgs boson decay channel, H to bb, the present work aims to give a comparison of these results with a fully simulated detector. We present our results in this study using the publicly available ATLAS software infrastructure. Based on state-of-the art reconstruction algorithms, a novel analysis of the bb decay could be performed leading to an independent verification of the existing results to an exceptionally high precision.
description: 9 pages, 11 figures
Ridge polariton laser: different from a semiconductor edge-emitting laser
Creators: name: Souissi, H
name: Gromovyi, M
name: Gueye, T
name: Brimont, C
name: Doyennette, L
name: Solnyshkov, D
name: Malpuech, G
name: Cambril, E
name: Bouchoule, S
name: Alloing, B
name: Rennesson, S
name: Semond, F
name: Zúñiga-Pérez, J
name: Guillet, T
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We experimentally demonstrate the difference between a ridge polariton laser, and a conventional edge-emitting ridge laser operating under electron-hole population inversion. The horizontal laser cavities are 20 -- 60 $μ$m long GaN etched ridge structures with vertical Bragg reflectors. We investigate the laser threshold under optical pumping and assess quantitatively the effect of a varying optically-pumped length. The laser effect is achieved for an exciton reservoir length of just 15% of the cavity length, which would not be possible in a conventional ridge laser, with an inversion-less polaritonic gain about 10 times larger than in equivalent GaN lasers. The modelling of the cavity free spectral range demonstrates the polaritonic nature of the modes.
Worst-case quantum hypothesis testing with separable measurements
Creators: name: Thinh, Le Phuc
name: Dall’Arno, Michele
name: Scarani, Valerio
Publisher: name: Wien : Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
Year: 2020
Subjects: subject: quantum states
subject: quantum state verification
subject: quantum physics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: For any pair of quantum states (the hypotheses), the task of binary quantum hypotheses testing is to derive the tradeoff relation between the probability p01 of rejecting the null hypothesis and p10 of accepting the alternative hypothesis. The case when both hypotheses are explicitly given was solved in the pioneering work by Helstrom. Here, instead, for any given null hypothesis as a pure state, we consider the worst-case alternative hypothesis that maximizes p10 under a constraint on the distinguishability of such hypotheses. Additionally, we restrict the optimization to separable measurements, in order to describe tests that are performed locally. The case p01 = 0 has been recently studied under the name of “quantum state verification”. We show that the problem can be cast as a semi-definite program (SDP). Then we study in detail the two-qubit case. A comprehensive study in parameter space is done by solving the SDP numerically. We also obtain analytical solutions in the case of commuting hypotheses, and in the case where the two hypotheses can be orthogonal (in the latter case, we prove that the restriction to separable measurements generically prevents perfect distinguishability). In regards to quantum state verification, our work shows the existence of more efficient strategies for noisy measurement scenarios. © 2020 Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften.
Crystal structure of sodium gallium germanium oxide, NaGaGeO4
Creators: name: Robben, Lars
name: Poltz, Irma
name: Buhl, Josef-Christian
Publisher: name: München : Oldenbourg
Year: 2010
Subjects: subject: mineralogy
subject: crystallography
subject: Mineralogie
subject: Kristallographie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: GaGeNaO4, monoclinic, P2(1)/n (no. 14), a = 8.8794(5) angstrom, b = 8.2679(5) angstrom, c = 15.5969(9) angstrom, beta = 90.129(5)degrees, V = 1144.20 angstrom(3), Z = 12, R(I) = 0.013, R(P) = 0.056, T = 293 K.
Neutrino seesaw models at one-loop matching: Discrimination by effective operators
Creators: name: Du, Yong
name: Li, Xu-Xiang
name: Yu, Jiang-Hao
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the functional method, one-loop matching of the type-I, -II and -III seesaw models are investigated and the results are presented in both the Green's and the Warsaw bases. Although these models generate the same dimension-5 Weinberg operator, they could induce quite different types of dimension-6 effective operators that can be utilized for model discrimination. We also find the threshold effects from one-loop matching could be significant, which turn out to allow triggering electroweak symmetry breaking radiatively in type-II seesaw while forbid that in type-I/-III models. An analytical criterion for such radiative symmetry breaking is also derived in type-II seesaw. Finally, we investigate the indirect signatures from different types of dimension-6 operators at high-energy colliders, low-energy precision experiments and forward physics facilities for model discrimination.
description: 45 pages, 10 figures, 13 tables, with minor revision on matching results and updated references
Theoretical approach to ferroelectricity in hafnia and related materials
Creators: name: Aramberri, Hugo
name: Íñiguez, Jorge
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Hafnia ferroelectrics combine technological promise and unprecedented behaviors. Their peculiarity stems from the many active extrinsic mechanisms that contribute to their properties and from a continuously growing number of novel intrinsic features. Partly because of their unconventional nature, basic questions about these materials remain open and one may wonder about the pertinence of some frequent theoretical assumptions. Aided by first-principles simulations, here we show that, by adopting an original high-symmetry reference phase as the starting point of the analysis, we can develop a mathematically simple and physically transparent treatment of the ferroelectric state of hafnia. The proposed approach describes hafnia as a uniaxial ferroic, as suggested by recent studies of (woken-up) samples with well developed polarization. Also, it is compatible with the occurrence of polar soft modes and proper ferroelectric order. Further, our theory provides a straightforward and unified description of all low-energy polymorphs, shedding light into old questions (e.g., the prevalence of the monoclinic ground state), pointing at exciting possibilities (e.g., an antiferroelastic behavior) and facilitating the future development of perturbative theories (from Landau to second-principles potentials). Our work thus yields a deeper understanding of hafnia ferroelectrics, improving our ability to optimize their properties and induce new ones.
description: 8 pages, 4 figures. Improved discussion
Green Power Control in Cognitive Wireless Networks
Creators: name: Treust, Mael Le
name: Lasaulce, Samson
name: Hayel, Yezekael
name: He, Gaoning
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: A decentralized network of cognitive and non-cognitive transmitters where each transmitter aims at maximizing his energy-efficiency is considered. The cognitive transmitters are assumed to be able to sense the transmit power of their non-cognitive counterparts and the former have a cost for sensing. The Stackelberg equilibrium analysis of this $2-$level hierarchical game is conducted, which allows us to better understand the effects of cognition on energy-efficiency. In particular, it is proven that the network energy-efficiency is maximized when only a given fraction of terminals are cognitive. Then, we study a sensing game where all the transmitters are assumed to take the decision whether to sense (namely to be cognitive) or not. This game is shown to be a weighted potential game and its set of equilibria is studied. Playing the sensing game in a first phase (e.g., of a time-slot) and then playing the power control game is shown to be more efficient individually for all transmitters than playing a game where a transmitter would jointly optimize whether to sense and his power level, showing the existence of a kind of Braess paradox. The derived results are illustrated by numerical results and provide some insights on how to deploy cognitive radios in heterogeneous networks in terms of sensing capabilities. Keywords: Power Control, Stackelberg Equilibrium, Energy-Efficiency.
description: 13 pages,5 figures, Journal Paper
Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This Letter reports the observation of single top quarks produced together with a photon, which directly probes the electroweak coupling of the top quark. The analysis uses 139 fb$^{-1}$ of 13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider. Requiring a photon with transverse momentum larger than 20 GeV and within the detector acceptance, the fiducial cross section is measured to be 688 $\pm$ 23 (stat.) $^{+75}_{-71}$ (syst.) fb, to be compared with the standard model prediction of 515 $^{+36}_{-42}$ fb at next-to-leading order in QCD.
description: 33 pages in total, author list starting page 18, 5 figures, 0 tables, published in Phys. Rev. Lett. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2018-44/