cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Distilling Implicit Multimodal Knowledge into Large Language Models for Zero-Resource Dialogue Generation
Creators: name: Zhang, Bo
name: Ma, Hui
name: Ding, Jian
name: Wang, Jian
name: Xu, Bo
name: Lin, Hongfei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Integrating multimodal knowledge into large language models (LLMs) represents a significant advancement in dialogue generation capabilities. However, the effective incorporation of such knowledge in zero-resource scenarios remains a substantial challenge due to the scarcity of diverse, high-quality dialogue datasets. To address this, we propose the Visual Implicit Knowledge Distillation Framework (VIKDF), an innovative approach aimed at enhancing LLMs for enriched dialogue generation in zero-resource contexts by leveraging implicit multimodal knowledge. VIKDF comprises two main stages: knowledge distillation, using an Implicit Query Transformer to extract and encode visual implicit knowledge from image-text pairs into knowledge vectors; and knowledge integration, employing a novel Bidirectional Variational Information Fusion technique to seamlessly integrate these distilled vectors into LLMs. This enables the LLMs to generate dialogues that are not only coherent and engaging but also exhibit a deep understanding of the context through implicit multimodal cues, effectively overcoming the limitations of zero-resource scenarios. Our extensive experimentation across two dialogue datasets shows that VIKDF outperforms existing state-of-the-art models in generating high-quality dialogues. The code is available at https://github.com/zhangbo-nlp/VIKDF.
description: Accepted by Information Fusion. The code is available at https://github.com/zhangbo-nlp/VIKDF
Vortrag "Farbgesetze und subjektive Gestaltung"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1958

description: Enthält: 1 Manuskript von Johannes Itten; 1 Typoskript / Johannes Itten hielt den Vortrag am 09.08.1958 beim Kongress der Internationalen Vereinigung für Kunsterziehung in Basel.
Casting a Health Equity Lens on Endocrinology and Diabetes: Figures
Creators: name: Golden, Sherita
name: Joseph, Joshua
name: Hill-Briggs, Felicia
Publisher: name: figshare
Year: 2020
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: Figure 1: Medical, Scientific, and Social Policy Contributors to Health and Health Care Disparities in African Americans in the United States
Figure 2: Medical, Scientific, and Social Policy Contributors to Health, Health Care, and COVID-19 Disparities in African Americans in the United States
Detection of the buckminsterfullerene cation (C60+) in space
Creators: name: Berné, Olivier
name: Mulas, Giacomo
name: Joblin, Christine
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In the early 90s, C60+ was proposed as the carrier of two diffuse interstellar bands (DIBs) at 957.7 and 963.2 nm, but a firm identification still awaits gas-phase spectroscopic data. Neutral C60, on the other hand, was recently detected through its infrared emission bands in the interstellar medium and evolved stars. In this contribution, we present the detection of C60+ through its infrared vibrational bands in the NGC 7023 nebula, based on spectroscopic observations with the Spitzer space telescope, quantum chemistry calculation, and laboratory data from the literature. This detection supports the idea that C60+ could be a DIB carrier, and provides robust evidence that fullerenes exist in the gas-phase in the interstellar medium. Modeling efforts to design specific observations, combined with new gas-phase data, will be essential to confirm this proposal. A definitive attribution of the 957.7 and 963.2 nm DIBs to C60+ would represent a significant step forward in the field.
description: To appear in "Proceedings of IAU 297 symposium on the Diffuse Interstellar Bands", eds. J. Cami and N. Cox (5 pages)
Extended T2 times of shallow implanted NV in chemically mechanically polished diamond
Creators: name: Tyler, S.
name: Newland, J.
name: Hepworth, P.
name: Wijesekara, A.
name: Gullick, I. R.
name: Markham, M. L.
name: Newton, M. E.
name: Green, B. L.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Mechanical polishing of diamond is known to be detrimental to the spin lifetime and strain environment of near-surface defects. By utilising a chemical mechanical polishing (CMP) process, we demonstrate that we can achieve 13C-limited spin lifetimes of shallow implanted (<34 nm) NV centres in an industrially scalable process. We compare spin lifetimes (T2) of three diamonds processed with CMP with one processed by inductively-coupled plasma reactive ion etching (ICP-RIE), and observe an increased median T2 of 355 microseconds in the CMP-processed samples for 15NV centres implanted and annealed under identical conditions.
description: 6 pages, 7 figures
Vortrag "Die pädagogischen Grundlagen meines Kunstunterrichtes"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1963

description: Enthält: 1) 4 Manuskripte mit Notizen zu einem Vortrag "Die pädagogischen Grundlagen meines Kunstunterrichtes"; 2) Einladung zur Delegiertenversammlung des Schweizerischen Vereins für Handarbeit und Schulreform am 03.08.1963 in Zug, an der Johannes Itten den Vortrag hielt.
SSAMBA: Self-Supervised Audio Representation Learning with Mamba State Space Model
Creators: name: Shams, Siavash
name: Dindar, Sukru Samet
name: Jiang, Xilin
name: Mesgarani, Nima
Publisher: name: arXiv
Year: 2024
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Transformers have revolutionized deep learning across various tasks, including audio representation learning, due to their powerful modeling capabilities. However, they often suffer from quadratic complexity in both GPU memory usage and computational inference time, affecting their efficiency. Recently, state space models (SSMs) like Mamba have emerged as a promising alternative, offering a more efficient approach by avoiding these complexities. Given these advantages, we explore the potential of SSM-based models in audio tasks. In this paper, we introduce Self-Supervised Audio Mamba (SSAMBA), the first self-supervised, attention-free, and SSM-based model for audio representation learning. SSAMBA leverages the bidirectional Mamba to capture complex audio patterns effectively. We incorporate a self-supervised pretraining framework that optimizes both discriminative and generative objectives, enabling the model to learn robust audio representations from large-scale, unlabeled datasets. We evaluated SSAMBA on various tasks such as audio classification, keyword spotting, and speaker identification. Our results demonstrate that SSAMBA outperforms the Self-Supervised Audio Spectrogram Transformer (SSAST) in most tasks. Notably, SSAMBA is approximately 92.7% faster in batch inference speed and 95.4% more memory-efficient than SSAST for the tiny model size with an input token size of 22k. These efficiency gains, combined with superior performance, underscore the effectiveness of SSAMBA's architectural innovation, making it a compelling choice for a wide range of audio processing applications.
description: Code at https://github.com/SiavashShams/ssamba
Nonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities
Creators: name: Peng, Bo
name: Ozdemir, Sahin Kaya
name: Lei, Fuchuan
name: Monifi, Faraz
name: Gianfreda, Mariagiovanna
name: Long, Gui Lu
name: Fan, Shanhui
name: Nori, Franco
name: Bender, Carl M.
name: Yang, Lan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Mathematical Physics (math-ph)
subject: Classical Physics (physics.class-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Optical systems combining balanced loss and gain profiles provide a unique platform to implement classical analogues of quantum systems described by non-Hermitian parity-time- (PT-) symmetric Hamiltonians and to originate new synthetic materials with novel properties. To date, experimental works on PT-symmetric optical systems have been limited to waveguides in which resonances do not play a role. Here we report the first demonstration of PT-symmetry breaking in optical resonator systems by using two directly coupled on-chip optical whispering-gallery-mode (WGM) microtoroid silica resonators. Gain in one of the resonators is provided by optically pumping Erbium (Er3+) ions embedded in the silica matrix; the other resonator exhibits passive loss. The coupling strength between the resonators is adjusted by using nanopositioning stages to tune their distance. We have observed reciprocal behavior of the PT-symmetric system in the linear regime, as well as a transition to nonreciprocity in the PT symmetry-breaking phase transition due to the significant enhancement of nonlinearity in the broken-symmetry phase. Our results represent a significant advance towards a new generation of synthetic optical systems enabling on-chip manipulation and control of light propagation.
description: 13 Pages, 5 figures, 35 References
Aufsätze zur Ausstellung "Das neue Schulhaus"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1953

description: Enthält: 1) Manuskript von Johannes Itten "Der Schulhausbau" (10 Blätter), Beilage: Umschlagbeschriftung Anneliese Ittens; 2) gedrucktes Geleitwort Johannes Ittens aus dem Ausstellungskatalog (Wegleitungen des Kunstgewerbemuseums Nr. 199); 3) Typoskript "Anmerkungen zu ,Das neue Schulhaus'" mit hs. Notizen
Johannes Itten: Gedanken zu meiner Arbeit am Kunstgewerbemuseum
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1938

description: Ansprache bei Amtsantritt am 01.12.1938, veröffentlicht in: Das Werk, Jg. 26, 1939, Heft 1, unter dem Titel "Aufgaben der Gewerbeschule I und des Kunstgewerbemuseums" / Beilagen: 10 Seiten Manuskript und Notizen zum Text; Umschlagbeschriftung von Anneliese Itten
Vortrag "Die Farbe in der Architektur"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1962

description: Enthält verschiedene Dokumente zu einem Vortrag "Die Farbe in der Architektur", von Johannes Itten am 25.10.1962 in der Ortsgruppe Zürich des Bundes Schweizer Architekten (BSA) gehalten: 1) Textskizze (1 Blatt); 2) Manuskript ohne Titel (3 Blätter); 3) Manuskript "Die Farbe in der Architektur" (4 Blätter); 4) Manuskript "Vortrag B.S.A. 25.X.62" (15 Blätter); 5) Manuskript mit Bemerkungen (4 Blätter); 6) Notizblatt mit dem Titel "Vortrag B.S.A. 25.X.62" (1 Blatt) / Die Manuskripte weisen diverse Korrekturen und Anmerkungen auf.
Vortrag "Die Erziehung zum schöpferischen Menschen"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1965

description: Enthält: 1 Entwurfsmanuskript von Johannes Itten; 1 Typoskript mit handschriftlichen Eintragungen / Vortrag im Lehrerfortbildungskurs des Schweizerischen Werkbundes Zürich in der ETH, 15. und 16.10.1965
Overlap/Domain-wall reweighting
Creators: name: Fukaya, H.
name: Aoki, S.
name: Cossu, G.
name: Hashimoto, S.
name: Kaneko, T.
name: Noaki, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the eigenvalues of nearly chiral lattice Dirac operators constructed with five-dimensional implementations. Allowing small violation of the Ginsparg-Wilson relation, the HMC simulation is made much faster while the eigenvalues are not significantly affected. We discuss the possibility of reweighting the gauge configurations generated with domain-wall fermions to those of exactly chiral lattice fermions.
description: 7 pages, 3 figures, presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July-3 August 2013, Mainz, Germany
Binary Disk interaction II: Gap-Opening criteria for unequal mass binaries
Creators: name: del Valle, Luciano
name: Escala, Andres
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the interaction between an unequal mass binary with an isothermal circumbinary disk, motivated by the theoretical and observational evidence that after a major merger of gas-rich galaxies, a massive gaseous disk with a SMBH binary will be formed in the nuclear region. We focus on the gravitational torques that the binary exerts onto the disk and how these torques can drive the formation of a gap in the disk. This exchange of angular momentum between the binary and the disk is mainly driven by the gravitational interaction between the binary and a strong non-axisymmetric density perturbation that is produced in the disk, as response to the presence of the binary. Using SPH numerical simulations we tested two gap-opening criterion, one that assumes that the geometry of the density perturbation is an ellipsoid/thick-spirals and another that assumes a geometry of flat-spirals for the density perturbation. We find that the flat-spirals gap opening criterion successfully predicts which simulations will have a gap on the disk and which simulations will not have a gap on the disk. We also study the limiting cases predicted by the gap-opening criteria. Since the viscosity in our simulations is considerably smaller than the expected value in the nuclear regions of gas-rich merging galaxies, we conclude that in such environments the formation of a circumbinary gap is unlikely.
CO observation of the Galactic bubble N4
Creators: name: Li, Junyu
name: Jiang, Zhibo
name: Liu, Yao
name: Wang, Yuan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We presented a study on the Galactic bubble N4 using the 13.7 m millimeter telescope of Purple Mountain Observatory at the Qinghai Station. N4 is one of the science demonstration regions for the Milky Way Imaging Scroll Painting (WMISP). Simultaneous observations of $^{12}$CO (J = 1$-$0), $^{13}$CO (J = 1$-$0) and C$^{18}$O (J = 1$-$0) line emission towards N4 were carried out. We analyzed the spectral profile and the distribution of the molecular gas. Morphologically, the CO emissions correlate well with Spitzer IRAC 8.0 $μ$m emission. The channel map and velocity-position diagram shows that N4 is more likely an inclined expanding ring than a spherical bubble. We calculated the physical parameters of N4 including the mass, size, column density and optical depth. Some massive star candidates were discovered in the region of N4 using (J, J$-$H) color-magnitude diagram. We found an energy source candidate for the expansion of N4, a massive star with a mass of ${\sim} 15\,M_{\odot}$ and an age of $\sim$ 1 Myr. There exists infall motion signature in N4, which can be a good candidate of infall area. Combined mm and infrared data, we think there may exists triggered star formation in N4.
description: 13 pages; 10 figures; RAA in press
Suppression of electron spin decoherence of the diamond NV center by a transverse magnetic field
Creators: name: Shin, Chang S.
name: Avalos, Claudia E.
name: Butler, Mark C.
name: Wang, Hai-Jing
name: Seltzer, Scott J.
name: Liu, Ren-Bao
name: Pines, Alexander
name: Bajaj, Vikram S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate that the spin decoherence of nitrogen vacancy (NV) centers in diamond can be suppressed by a transverse magnetic field if the electron spin bath is the primary decoherence source. The NV spin coherence, created in "a decoherence-free subspace" is protected by the transverse component of the zero-field splitting, increasing the spin-coherence time about twofold. The decoherence due to the electron spin bath is also suppressed at magnetic fields stronger than ~25 gauss when applied parallel to the NV symmetry axis. Our method can be used to extend the spin-coherence time of similar spin systems for applications in quantum computing, field sensing, and other metrologies.
description: 20 pages, 4 figures
On singular value inequalities for matrix means
Creators: name: Dumitru, R.
name: Levanger, R.
name: Visinescu, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: For positive semidefinite $n\times n$ matrices $A$ and $B$, the singular value inequality $(2+t)s_{j}(A^{r}B^{2-r}+A^{2-r}B^{r})\leq 2s_{j}(A^{2}+tAB+B^{2})$ is shown to hold for $r=\frac{1}{2}, 1, \frac{3}{2}$ and all $-2
description: 8 pages
Determination of the Mutual Inductance of End Turns of Induction Motors
Creators: name: Hawley, Paul Frederick
Publisher: name: California Institute of Technology
Year: 1933
Subjects: Electrical Engineering

description: The object in making the following investigation
was to facilitate the obtaining of a more accurate
determination of the reactance of the end turns of
rotating alternating current machinery. Such formulae
as are available at present are, as far as the author
knows, based on incorrect assumptions, or fail to
consider the various factors present. The accuracy of
the results obtained when using such formulae is very
small. Often the calculated reactance will not be
within 400% of the correct value. Because of this, it
was felt that a more accurate analysis of this problem
would be of value, chiefly to the designing engineer.

In this report, the "end turns" of the machine
windings are considered to be the part of the turns of
the coils on the armature of the machine not lying in
armature slots. These turns, the connecting conductors
between the armature bars, lie against each other in a
belt extending around the circumference of the armature.
In nearly all motor coils, the end turns consist of a
short section extending straight out from the armature
slot, a much longer section bent nearly parallel with the
core, an abruptly curved end section, and two lengths
similar to the first two. It is obvious that the accurate
determination of the inductance of such coils must take
into account the peculiar shape of the coils and the effect
of the coils upon each other. It is this second effect
which is usually neglected in determinations of the
reactance. Actually this mutual inductance is of greater
importance than the self inductance of the coils.
Johannes Itten: Pädagogisch-methodisches zum Kunstunterricht
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1954

description: Enthält: Manuskript, Entwurf zum Aufsatz von Johannes Itten "Pädagogisch-methodisches zum Kunstunterricht"; Belegexemplar: Wegleitung 200 zur Ausstellung "Kunstgewerbeschule Zürich" im Kunstgewerbemuseum Zürich 1954
Deep Reinforcement Learning for Time-Critical Wilderness Search And Rescue Using Drones
Creators: name: Ewers, Jan-Hendrik
name: Anderson, David
name: Thomson, Douglas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: Machine Learning (cs.LG)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Traditional search and rescue methods in wilderness areas can be time-consuming and have limited coverage. Drones offer a faster and more flexible solution, but optimizing their search paths is crucial. This paper explores the use of deep reinforcement learning to create efficient search missions for drones in wilderness environments. Our approach leverages a priori data about the search area and the missing person in the form of a probability distribution map. This allows the deep reinforcement learning agent to learn optimal flight paths that maximize the probability of finding the missing person quickly. Experimental results show that our method achieves a significant improvement in search times compared to traditional coverage planning and search planning algorithms. In one comparison, deep reinforcement learning is found to outperform other algorithms by over $160\%$, a difference that can mean life or death in real-world search operations. Additionally, unlike previous work, our approach incorporates a continuous action space enabled by cubature, allowing for more nuanced flight patterns.
description: 16 pages, 19 figures. Submitted
Korrekturen zur "Kunst der Farbe"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1965

description: Enthält: 2 Seiten mit Korrekturen zu den Abbildungen 7 und 8 in "Kunst der Farbe"; 1 Seite von Johannes Itten unterschrieben und datiert mit 26.10.1965
Constant Compositions in the Sphere Packing Bound for Classical-Quantum Channels
Creators: name: Dalai, Marco
name: Winter, Andreas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The sphere packing bound, in the form given by Shannon, Gallager and Berlekamp, was recently extended to classical-quantum channels, and it was shown that this creates a natural setting for combining probabilistic approaches with some combinatorial ones such as the Lovász theta function. In this paper, we extend the study to the case of constant composition codes. We first extend the sphere packing bound for classical-quantum channels to this case, and we then show that the obtained result is related to a variation of the Lovász theta function studied by Marton. We then propose a further extension to the case of varying channels and codewords with a constant conditional composition given a particular sequence. This extension is then applied to auxiliary channels to deduce a bound which can be interpreted as an extension of the Elias bound.
description: ISIT 2014. Two issues that were left open in Section IV of the first version are now solved
Vortrag "Probleme der Form und Farbe für den bildenden Künstler"
Creators: name: Itten, Johannes
Publisher: name: [s.n.]
Year: 1966

description: Enthält: 1 Entwurfsmanuskript von Johannes Itten; 1 Liste "Dias"; Beilage: Notiz von Anneliese Itten / Vortrag an der Kunstakademie München, 22.06.1966
Developing a novel e-cigarette regulatory and policy control scale: results from the European Union
Creators: name: Shah, Ajay
name: Britton, John
name: Bogdanovica, Ilze
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Hematology
subject: Computational Biology

description: E-cigarette regulations vary considerably between countries though a standard approach for comparing regulatory frameworks does not exist. Additionally, there is no evidence on whether regulatory variations are associated with differences in e-cigarette use and smoking cessation. This study aims to develop a regulatory scale to measure and compare e-cigarette regulations between European Union countries and investigate whether scores are associated with e-cigarette use and smoking cessation. Data from a range of sources, such as ECigIntelligence, were used to develop a scale and score countries in the respective areas of e-cigarette scale. We used correlation analysis to investigate association between scale scores and e-cigarettes market, e-cigarette prevalence and use of e-cigarettes for smoking cessation. An e-cigarette scale consisting of 10 domains was developed. Our analysis suggests that higher e-cigarette scale scores were associated with significantly greater use of e-cigarettes within countries, and greater increases in the prevalence of former smoking smokers between 2014 and 2017. Whilst further work is needed to develop the scale in line with rapidly changing regulatory landscape and product development, the current findings suggest that countries that have implemented e-cigarette regulations might be more successful in obtaining public health gains such as increase in the proportion of former smokers compared to countries where e-cigarette market and sales is not regulated.
Reentrant multiple-$\mathbf{q}$ magnetic order and a "spin-cholesteric" phase in Sr$_3$Fe$_2$O$_7$
Creators: name: Andriushin, N. D.
name: Muller, J.
name: Pavlovskii, N. S.
name: Grumbach, J.
name: Granovsky, S.
name: Tymoshenko, Y. V.
name: Zaharko, O.
name: Ivanov, A.
name: Ollivier, J.
name: Doerr, M.
name: Keimer, B.
name: Mostovoy, M.
name: Inosov, D. S.
name: Peets, D. C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spin-nematic and spin-smectic phases have been reported in magnetic materials, which break rotational symmetry while preserving translational symmetry along certain directions. However, until now the analogy to liquid crystals remained incomplete because no magnetic analog of cholesteric order was known. Here we show that the bilayer perovskite Sr$_3$Fe$_2$O$_7$, previously believed to adopt a simple single-$\mathbf{q}$ spin-helical order, hosts two distinct types of multi-$\mathbf{q}$ spin textures and the first "spin-cholesteric". Its ground state represents a novel multi-$\mathbf{q}$ spin texture with unequally intense spin modulations at the two ordering vectors. This is followed in temperature by the new "spin-cholesteric" phase with spontaneously broken chiral symmetry, in which the translational symmetry is broken only along one of the crystal directions while the weaker orthogonal modulation melts, giving rise to intense short-range dynamical fluctuations. Shortly before the transition to the paramagnetic state, vortex-crystal order spanned by two equivalent $\mathbf{q}$ vectors emerges. The "spin-cholesteric" phase completes the spin analogy with liquid crystals and renders Sr$_3$Fe$_2$O$_7$ a touchstone for studying transitions among multiple-$\mathbf{q}$ spin textures in a centrosymmetric host.
The Photo-Oxidation of Carbon Tetrachloride
Creators: name: Lyons, Ernest Herbert, Jr.
Publisher: name: California Institute of Technology
Year: 1933
Subjects: Chemistry

description: 1. It has been shown that carbon tetrachloride
is not decomposed by light of wavelength 2537
ångstroms.

2. It has been shown that light of wavelength
2537 ångstroms produces an oxidation of carbon
tetrachloride according to the reaction

CCl4 + ½O2 → COCl2 + Cl2

It has been shown that one molecule of carbon
tetrachloride is decomposed per quantum of light
absorbed. A possible mechanism for this reaction
has been given.

3. The difficulty of purifying carbon
tetrachloride for photochemical work has been
pointed out.

4. Evidence suggesting a photochemical
hydrolysis of carbon tetrachloride has been
given.
Mg II h+k Flux - Rotational Period Correlation for G-type stars
Creators: name: Olmedo, Manuel
name: Chávez, Miguel
name: Bertone, Emanuele
name: De la Luz, Víctor
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of the correlation between the mid-UV Mg II h and k emission lines and measured rotational periods of G-type stars. Based on IUE and HST high resolution spectra of a sample of 36 stars, we derive an exponential function that best represents the correlation. We found that the variation of the Mg II h + k fluxes is about a factor of 2.5 larger than that of Ca II H+K, indicating that the UV features are more sensitive to the decline of rotational period. The comparison of UV-predicted rotational periods with those derived from empirical Prot - Ca II H+K flux calibrations are consistent, with some scatter at large periods, where the emission are less intense. We present newly derived rotational periods for 15 G-type stars.
description: 9 pages, 5 figures, 4 tables. Accepted for publication in PASP (corrected references)
High-performance memory safety - Optimizing the CHERI capability machine
Creators: name: Joannou, Alexandre Jean-Michel Procopi
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: memory safety
capabilities
hardware capability
capability compression
tagged memory
tag cache
efficient tagged memory
CHERI
Bluespec

description: This work presents optimizations for modern capability machines and specifically for the CHERI architecture, a 64-bit MIPS instruction set extension for security, supporting fine-grained memory protection through hardware-enforced capabilities. The original CHERI model uses 256-bit capabilities to carry information required for various checks helping to enforce memory safety, leading to increased memory bandwidth requirements and cache pressure when using CHERI capabilities in place of conventional 64-bit pointers. In order to mitigate this cost, I present two new 128-bit CHERI capability formats, using different compression techniques, while preserving C-language compatibility lacking in previous pointer compression schemes. I explore the trade-offs introduced by these new formats over the 256-bit format. I produce an implementation in the L3 ISA modeling language, collaborate on the hardware implementation, and provide an evaluation of the mechanism. Another cost related to CHERI capabilities is the memory traffic increase due to capability-validity tags: to provide unforgeable capabilities, CHERI uses a tagged memory that preserves validity tags for every 256-bit memory word in a shadowspace inaccessible to software. The CHERI hardware implementation of this shadowspace uses a capability-validity-tag table in memory and caches it at the end of the cache hierarchy. To efficiently implement such a shadowspace and improve on CHERI’s current approach, I use sparse data structures in a hierarchical tag-cache that filters unnecessary memory accesses. I present an in-depth study of this technique through a Python implementation of the hierarchical tag-cache, and also provide a hardware implementation and evaluation. I find that validity-tag traffic is reduced for all applications and scales with tag use. For legacy applications that do not use tags, there is near zero overhead. Removing these costs through the use of the proposed optimizations makes the CHERI architecture more affordable and appealing for industrial adoption.
description: DARPA project, contract FA8750-10-C-0237
Robust Modulation of Integrate-and-Fire Models.
Creators: name: Van Pottelbergh, Tomas
name: Drion, Guillaume
name: Sepulchre, Rodolphe
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018

description: By controlling the state of neuronal populations, neuromodulators ultimately affect behavior. A key neuromodulation mechanism is the alteration of neuronal excitability via the modulation of ion channel expression. This type of neuromodulation is normally studied with conductance-based models, but those models are computationally challenging for large-scale network simulations needed in population studies. This article studies the modulation properties of the multiquadratic integrate-and-fire model, a generalization of the classical quadratic integrate-and-fire model. The model is shown to combine the computational economy of integrate-and-fire modeling and the physiological interpretability of conductance-based modeling. It is therefore a good candidate for affordable computational studies of neuromodulation in large networks.
Quantum Hopfield Model with Dilute Memories
Creators: name: Xie, Rongfeng
name: Kamenev, Alex
Publisher: name: arXiv
Year: 2024
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We discuss adiabatic spectra and dynamics of the quantum, i.e. transverse field, Hopfield model with dilute memories (the number of stored patterns $p < log_2 N$, where $N$ is the number of qubits). At some critical transverse field the model undergoes the quantum phase transition from the ordered to the paramagnetic state. The corresponding critical exponents are calculated and used to determine efficiency of quantum annealing protocols. We also discuss implications of these results for the quantum annealing of generic spin glass models.
Sommer 1887
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1887

description: Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Digitalisierung=Digitization=Numérisation Oktober 2023 TIFF
description: Verzeichnung=Description=Inventaire September 2023 HAN-Katalogisierungsregeln Minimalniveau nach Autopsie
description: Erschliessungsniveau Minimalniveau
Chaotic parameter $λ$ in Hanbury-Brown-Twiss interferometry in an anisotropic boson gas model
Creators: name: Liu, Jie
name: Ru, Peng
name: Zhang, Wei-Ning
name: Wong, Cheuk-Yin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using one- and two-body density matrices, we calculate the spatial and momentum distributions, two-particle Hanbury-Brown Twiss (HBT) correlation functions, and the chaotic parameter $λ$ in HBT interferometry for the systems of boson gas within the harmonic oscillator potentials with anisotropic frequencies in transverse and longitudinal directions. The HBT chaotic parameter, which can be obtained by measuring the correlation functions at zero relative momentum of the particle pair, is related to the degree of Bose-Einstein condensation and thus the system environment. We investigate the effects of system temperature, particle number, and the average momentum of the particle pair on the chaotic parameter. The value of $λ$ decreases with the condensed fraction, $f_0$. It is one for $f_0=0$ and zero for $f_0=1$. For a certain $f_0$ between 0 and 1, we find that $λ$ increases with the average momentum of the particle pair and decreases with the particle number of system. The results of $λ$ are sensitive to the ratio, $ν=ω_z/ω_ρ$, of the frequencies in longitudinal and transverse directions. They are smaller for larger $ν$ when $ω_ρ$ is fixed. In the heavy ion collisions at the Large Hadron Collider (LHC) energy the large identical pion multiplicity may possibly lead to a considerable Bose-Einstein condensation. Its effect on the chaotic parameter in two-pion interferometry is worth considering in earnest.
description: 27 pages, 16 figures
Galactic and Circumgalactic OVI and its Impact on the Cosmological Metal and Baryon Budgets at 2
Creators: name: Lehner, Nicolas
name: O'Meara, John M.
name: Fox, Andrew J.
name: Howk, J. Christopher
name: Prochaska, J. Xavier
name: Burns, Vincent
name: Armstrong, Ashley A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the first results from our NASA Keck Observatory Database of Ionized Absorbers toward Quasars (KODIAQ) survey which aims to characterize the properties of the highly ionized gas of high redshift galaxies and their circumgalactic medium (CGM) at 2 1, log N(HI) > 17.3) as probes of these galaxies and their CGM where both transitions of the O VI doublet have little contamination from the Ly α, β forests. We found 20 absorbers that satisfy these rules: 7 Lyman limit systems (LLSs), 8 super-LLSs (SLLSs) and 5 damped Lyα (DLAs). The O VI detection rate is 100% for the DLAs, 71% for the LLSs, and 63% for the SLLSs. When O VI is detected, log N(OVI)=14.9+/-0.3, an average O VI column density substantially larger and with a smaller dispersion than found in blind O VI surveys at similar redshifts. Strong O VI absorption is therefore nearly ubiquitous in the CGM of z~2-3 galaxies. The total velocity widths of the O VI profiles are also large (200 1) at 2 1 absorbers could contain as much as 3-14% of the cosmic baryon budget at z~2-3, only second to the Lyα forest. We conservatively show that 5-20% of the metals ever produced at z~2-3 are in form of highly ionized metals ejected in the CGM of galaxies.
description: Version accepted by the ApJ. Changes appear mostly in Sections 5.2 and 5.3. Two new tables summarizing the cosmic baryon and metal budgets are included
Constructing skew left braces whose additive group has trivial centre
Creators: name: Ballester-Bolinches, A.
name: Esteban-Romero, R.
name: Jiménez-Seral, P.
name: Pérez-Calabuig, V.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Group Theory (math.GR)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16T25, 81R50, 20C35, 20C99, 20D40

description: A complete description of all possible multiplicative groups of finite skew left braces whose additive group has trivial centre is shown. As a consequence, some earlier results of Tsang can be improved and an answer to an open question set by Tsang at Ischia Group Theory 2024 Conference is provided.
description: 9 pages
Local Tb theorem with L2 testing conditions and general measures: Square functions
Creators: name: Lacey, Michael T.
name: Martikainen, Henri
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B20

description: Local Tb theorems with Lp type testing conditions, which are not scale invariant, have been studied widely in the case of the Lebesgue measure. In the non-homogeneous world local Tb theorems have only been proved assuming scale invariant ($L^{\infty}$ or BMO) testing conditions. In this paper, for the first time, we overcome these obstacles in the non-homogeneous world, and prove a non-homogeneous local Tb theorem with L2 type testing conditions. This paper is in the setting of the vertical and conical square functions defined using general measures and kernels. The proof uses various recent innovations including a Whitney averaging formula and the insertion of a Calderon-Zygmund stopping data of a fixed function in to the construction of the twisted martingale difference operators.
description: 16 pages
Secret Sharing Schemes Based on Min-Entropies
Creators: name: Iwamoto, Mitsugu
name: Shikata, Junji
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cryptography and Security (cs.CR)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Fundamental results on secret sharing schemes (SSSs) are discussed in the setting where security and share size are measured by (conditional) min-entropies. We first formalize a unified framework of SSSs based on (conditional) Rényi entropies, which includes SSSs based on Shannon and min entropies etc. as special cases. By deriving the lower bound of share sizes in terms of Rényi entropies based on the technique introduced by Iwamoto-Shikata, we obtain the lower bounds of share sizes measured by min entropies as well as by Shannon entropies in a unified manner. As the main contributions of this paper, we show two existential results of non-perfect SSSs based on min-entropies under several important settings. We first show that there exists a non-perfect SSS for arbitrary binary secret information and arbitrary monotone access structure. In addition, for every integers $k$ and $n$ ($k \le n$), we prove that the ideal non-perfect $(k,n)$-threshold scheme exists even if the distribution of the secret is not uniformly distributed.
description: 7 pages, This is the full version of the paper to appear at IEEE ISIT2014
Intersectional Theory in Architectural and Urban History: Digital Curation and Archives of Architects and Urban Planners
Creators: name: Charitonidou, Marianna
Publisher: name: Zenodo
Year: 2022
Subjects: Intersectionality
digital curation
diversity issues
labor studies

description: Taking as its starting point the increasing importance of the role of digital curators within institutions holding architectural archives, the paper analyses the role of tools coming from intersectional theory and practice in contributing to our understanding of how women and black men are represented in the digital curation of architectural drawings in cultural institutions. More specifically, the paper explores how concepts and tools coming from the theory of intersectionality in order to examine how aspects concerning gender and race can be taken into account when establishing digital curatorship strategies. The paper is based on the hypothesis that visualization strategies can show the evolution of the role of women and black people in architectural discourse. An important factor for this paper is that the afore-mentioned institutions are situated within a context having the following characteristics, which are contradictory to a certain extent: on the one hand, they hold in their collections archives of architects that are paradigmatic of the dominant discourse given the fact that they wish to acquire the fonds of architects that influenced and are significantly influencing the dominant discourse, but, on the other hand, they are called to shape interpretative models based on perspectives able to take into account diversity issues.
Digitized Counterdiabatic Quantum Algorithms for Logistics Scheduling
Creators: name: Dalal, Archismita
name: Montalban, Iraitz
name: Hegade, Narendra N.
name: Cadavid, Alejandro Gomez
name: Solano, Enrique
name: Awasthi, Abhishek
name: Vodola, Davide
name: Jones, Caitlin
name: Weiss, Horst
name: Füchsel, Gernot
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study a job shop scheduling problem for an automatized robot in a high-throughput laboratory and a travelling salesperson problem with recently proposed digitized counterdiabatic quantum optimization (DCQO)algorithms. In DCQO, we find the solution of an optimization problem via an adiabatic quantum dynamics, which is accelerated with counterdiabatic protocols. Thereafter, we digitize the global unitary to encode it in a digital quantum computer. For the job-shop scheduling problem, we aim at finding the optimal schedule for a robot executing a number of tasks under specific constraints, such that the total execution time of the process is minimized. For the traveling salesperson problem, the goal is to find the path that covers all cities and is associated with the shortest traveling distance. We consider both hybrid and pure versions of DCQO algorithms and benchmark the performance against digitized quantum annealing and the quantum approximate optimization algorithm (QAOA). In comparison to QAOA, the DCQO solution is improved by several orders of magnitude in success probability using the same number of two-qubit gates. Moreover, we implement our algorithms on cloud-based superconducting and trapped-ion quantum processors. Our results demonstrate that circuit compression using counterdiabatic protocols is amenable to current NISQ hardware and can solve logistics scheduling problems, where other digital quantum algorithms show insufficient performance.
description: 13 pages, 10 figures
Winter 1879/80
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1879

description: Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Verzeichnung=Description=Inventaire August 2023 Minimalaufnahme nach Autopsie
description: Digitalisierung=Digitization=Numérisation August 2023 TIFF
description: Erschliessungsniveau Minimalniveau
Dirac fermions with electric dipole moment and position-dependent mass in the presence of a magnetic field generated by magnetic monopoles
Creators: name: Oliveira, R. R. S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we determine the bound-state solutions for Dirac fermions with electric dipole moment (EDM) and position-dependent mass (PDM) in the presence of a radial magnetic field generated by magnetic monopoles. To achieve this, we work with the $(2+1)$-dimensional (DE) Dirac equation with nonminimal coupling in polar coordinates. Posteriorly, we obtain a second-order differential equation via quadratic DE. Solving this differential equation through a change of variable and the asymptotic behavior, we obtain a generalized Laguerre equation. From this, we obtain the bound-state solutions of the system, given by the two-component Dirac spinor and by the relativistic energy spectrum. So, we note that such spinor is written in terms of the generalized Laguerre polynomials, and such spectrum (for a fermion and an antifermion) is quantized in terms of the radial and total magnetic quantum numbers $n$ and $m_j$, and explicitly depends on the EDM $d$, PDM parameter $κ$, magnetic charge density $λ_m$, and on the spinorial parameter $s$. In particular, the quantization is a direct result of the existence of $κ$ (i.e., $κ$ acts as a kind of ``external field or potential''). Besides, we also analyze the nonrelativistic limit of our results, that is, we also obtain the nonrelativistic bound-state solutions. In both cases (relativistic and nonrelativistic), we discuss in detail the characteristics of the spectrum as well as graphically analyze its behavior as a function of $κ$ and $λ_m$ for three different values of $n$ (ground state and the first two excited states).
description: 14 pages, 4 figures (2 figures and 1 reference have been added)
Supplementary document for Stern–Gerlach effect of vector light bullets in a nonlocal Rydberg medium - 6132688.pdf
Creators: name: Huang, Guoxiang
name: Mu, Yue
Publisher: name: Optica Publishing Group
Year: 2022
Subjects: Uncategorized

description: This supplementary material gives further details on the analysis and calculations described in the main text.
High-resolution absorption spectroscopy of the circumgalactic medium of the Milky Way
Creators: name: Richter, P.
name: Fox, A. J.
name: Bekhti, N. Ben
name: Murphy, M. T.
name: Bomans, D.
name: Frank, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this article we discuss the importance of high-resolution absorption spectroscopy for our understanding of the distribution and physical nature of the gaseous circumgalactic medium (CGM) that surrounds the Milky Way. Observational and theoretical studies indicate a high complexity of the gas kinematics and an extreme multi-phase nature of the CGM in low-redshift galaxies. High-precision absorption-line measurements of the Milky Way's gas environment thus are essential to explore fundamental parameters of circumgalactic gas in the local Universe, such as mass, chemical composition, and spatial distribution. We shortly review important characteristics of the Milky Way's CGM and discuss recent results from our multi-wavelength observations of the Magellanic Stream. Finally, we discuss the potential of studying the warm-hot phase of the Milky Way's CGM by searching for extremely weak [FeX] l6374.5 and [FeIVX] l5302.9 absorption in optical QSO spectra.
description: 7 pages, 4 figures; accepted for publication in Astronomical Notes (paper version of a talk presented at the 10th Thinkshop, Potsdam, 2013)