cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Tidal dissipation in creeping ice and the thermal evolution of Europa
Creators: name: McCarthy, Christine
name: Cooper, Reid F.
Publisher: name: Columbia University
Year: 2016
Subjects: subject: Dislocations in crystals
subject: Satellites
subject: Microstructure
subject: Internal friction
subject: Ice mechanics
subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: The thermal and mechanical evolution of Europa and comparable icy satellites—the physics behind creating and sustaining a subsurface water ocean—depends almost entirely on the mechanical dissipation of tidal energy in ice to produce heat, the mechanism(s) of which remain poorly understood. In deformation experiments, we combine steady–state creep and low-frequency, small-strain periodic loading, similar conditions in which tectonics and tidal flexing are occurring simultaneously. The data reveal that the relevant, power-law attenuation in ice (i) is non-linear, depending on strain amplitude, (ii) is independent of grain size, and (iii) exceeds in absorption the prediction of the Maxwell solid model by an order of magnitude. The Maxwell solid model is widely used to model the dynamics of planetary ice shells, so this discrepancy is important. The prevalent understanding of damping in the geophysical context is that it is controlled by chemical diffusion on grain boundaries, which renders attenuation strongly dependent on grain size. In sharp contrast, our results indicate instead the importance of intracrystalline dislocations and their spatial interactions as the critical structural variable affecting dissipation. These dislocation structures are controlled by stress and realized by accumulated plastic strain. Thus, tectonics and attenuation are coupled, which, beyond the icy satellite/subsurface ocean problem, has implications also for understanding the attenuation of seismic waves in deforming regions of the Earth's upper mantle.
IPT2020-Problem 8- Rippled Water Columns (MIPT, Russia)
Creators: name: Sukhov, Artem
Publisher: name: Zenodo
Year: 2020
Subjects: IPT
IPT2020
Rippled Water Columns

description: IPT 2020 Problem 8 Rippled Water Columns MIPT: When a vertical water jet hits a surface, ripples may appear. If certain conditions are met, the ripple structure is pronounced, steady and very reproducible. Describe the phenomenon. What properties of the fluid and the flow can be deduced from the observations?
Optimality of intercellular signaling: direct transport versus diffusion
Creators: name: Kim, Hyunjoong
name: Mori, Yoichiro
name: Plotkin, Joshua B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Intercellular signaling has an important role in organism development, but not all communication occurs using the same mechanism. Here, we analyze the energy efficiency of intercellular signaling by two canonical mechanisms: diffusion of signaling molecules and direct transport mediated by signaling cellular protrusions. We show that efficient contact formation for direct transport can be established by an optimal rate of projecting protrusions, which depends on the availability of information about the location of the target cell. The optimal projection rate also depends on how signaling molecules are transported along the protrusion, in particular the ratio of the energy cost for contact formation and molecule synthesis. Also, we compare the efficiency of the two signaling mechanisms, under various model parameters. We find that the direct transport is favored over the diffusion when transporting a large amount of signaling molecules. There is a critical number of signaling molecules at which the efficiency of the two mechanisms are the same. The critical number is small when the distance between cells is far, which helps explain why protrusion-based mechanisms are observed in long-range cellular communications.
title: Pertinaciae Emendatio; [1771]
title: In Scenam Data A Media Grammatica Utriusque Ordinis In Electorali Gymnasio Societatis Jesu Burghusii Mense Aprili 1771
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2008

description: Programm
IPT2020-Problem 1- Cumulative Cannon (MIPT, Russia)
Creators: name: Sukhov, Artem
Publisher: name: Zenodo
Year: 2020
Subjects: IPT
IPT2020
Cumulative Cannon

description: IPT 2020 Problem 1 Cumulative Cannon MIPT: How high may a ping-pong ball jump using the setup on the video? What is the maximal fraction of the total kinetic energy that can be transferred to the ball?
Intelligent Reflection Enabling Technologies for Integrated and Green Internet-of-Everything Beyond 5G: Communication, Sensing, and Security
Creators: name: Shi, Wei
name: Xu, Wei
name: You, Xiaohu
name: Zhao, Chunming
name: Wei, Kejun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Internet-of-Everything (IoE) has gradually been recognized as an integral part of future wireless networks. In IoE, there can be an ultra-massive number of smart devices of various types to be served, imposing multi-dimensional requirements on wireless communication, sensing, and security. In this article, we provide a tutorial overview of the promising intelligent reflection communication (IRC) technologies, including reconfigurable intelligent surface (RIS) and ambient backscatter communication (AmBC), to support the requirements of IoE applications beyond the fifth-generation (5G) wireless communication network. Specifically, we elaborate on the benefits of IRC-assisted IoE in the context of the space-air-ground integrated communications and green communications, which are regarded as key features of supporting future IoE application from society and industries. Furthermore, we envision that the IRC-assisted communication and sensing can mutually benefit each other and articulate multiple ways of enhancing the security in IoE by the IRC. Numerical results help illustrate the importance of the IRC in unfavorable secrecy environments. Finally, open research issues and challenges about the IRC-assisted IoE are presented.
description: Accepted by IEEE Wireless Communications
A structural optimization algorithm with stochastic forces and stresses
Creators: name: Chen, Siyuan
name: Zhang, Shiwei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose an algorithm for optimizations in which the gradients contain stochastic noise. This arises, for example, in structural optimizations when computations of forces and stresses rely on methods involving Monte Carlo sampling, such as quantum Monte Carlo or neural network states, or are performed on quantum devices which have intrinsic noise. Our proposed algorithm is based on the combination of two key ingredients: an update rule derived from the steepest descent method, and a staged scheduling of the targeted statistical error and step-size, with position averaging. We compare it with commonly applied algorithms, including some of the latest machine learning optimization methods, and show that the algorithm consistently performs efficiently and robustly under realistic conditions. Applying this algorithm, we achieve full-degree optimizations in solids using ab initio many-body computations, by auxiliary-field quantum Monte Carlo with planewaves and pseudopotentials. A new metastable structure in Si was discovered in a mixed geometry and lattice relaxing simulation. In addition to structural optimization in materials, our algorithm can potentially be useful in other problems in various fields where optimization with noisy gradients is needed.
description: 18 pages, 14 figures
Charge tuning of non-resonant magneto-exciton phonon interactions in graphene
Creators: name: Rémi, Sebastian
name: Goldberg, Bennett B.
name: Swan, Anna K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Far from resonance, the coupling of the G-band phonon to magneto-excitons in single layer graphene displays kinks and splittings versus filling factor that are well described by Pauli blocking and unblocking of inter- and intra- Landau level transitions. We explore the non-resonant electron-phonon coupling by high-magnetic field Raman scattering while electrostatic tuning of the carrier density controls the filling factor. We show qualitative and quantitative agreement between spectra and a linearized model of electron-phonon interactions in magnetic fields. The splitting is caused by dichroism of left and right handed circular polarized light due to lifting of the G-band phonon degeneracy, and the piecewise linear slopes are caused by the linear occupancy of sequential Landau levels versus $ν$.
description: 5 pages, 3 figures
Black Holes Decohere Quantum Superpositions
Creators: name: Danielson, Daine L.
name: Satishchandran, Gautam
name: Wald, Robert M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that if a massive body is put in a quantum superposition of spatially separated states, the mere presence of a black hole in the vicinity of the body will eventually destroy the coherence of the superposition. This occurs because, in effect, the gravitational field of the body radiates soft gravitons into the black hole, allowing the black hole to acquire "which path" information about the superposition. A similar effect occurs for quantum superpositions of electrically charged bodies. We provide estimates of the decoherence time for such quantum superpositions. We believe that the fact that a black hole will eventually decohere any quantum superposition may be of fundamental significance for our understanding of the nature of black holes in a quantum theory of gravity.
description: 10 pages. Third prize essay in the Gravity Research Foundation 2022 Essays on Gravitation. Minor editorial changes in v2
Explaining supernova remnant G352.7-0.1 as a peculiar type Ia supernova inside a planetary nebula
Creators: name: Soker, Noam
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: I identify a point-symmetric morphology of the supernova remnant (SNR) G352.7-0.1 and propose that the outer axially-symmetric structure is the remnant of a common envelope evolution (CEE) of the progenitor system, while the inner structure is the ejecta of a thermonuclear explosion triggered by the merger of a white dwarf (WD) and the core of an asymptotic giant branch (AGB) star. The main radio structure of SNR G352.7-0.1 forms an outer (large) ellipse. The bright X-ray emitting gas forms a smaller ellipse with a symmetry axis inclined to the symmetry axis of the large radio ellipse. The high abundance of iron and the energy of its X-ray lines suggest a type Ia supernova (SN Ia). The massive swept-up gas suggests a relatively massive progenitor system. I propose a scenario with progenitors of initial masses of M1=5-7Mo and M2=4-5 Mo. At a later phase, the WD remnant of the primary star and the AGB secondary star experience a CEE that ejects the circumstellar material that swept up more ISM to form the large elliptical radio structure. An explosion during the merger of the WD with the core of the AGB star triggered a super-Chandrasekhar thermonuclear explosion that formed the inner structure that is bright in X-ray. A tertiary star in the system caused the misalignment of the two symmetry axes. This study adds to the wide variety of evolutionary routes within the scenarios of normal and peculiar SNe Ia.
description: Accepted for publication in New Astronomy
Resolving the Debate Between Boltzmann and Gibbs Entropy: Relative Energy Window Eliminates Thermodynamic Inconsistencies and Allows Negative Absolute Temperatures
Creators: name: Rajan, Ananth Govind
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Small systems consisting of a few particles are increasingly technologically relevant. In such systems, an intense debate in microcanonical statistical mechanics has been about the correctness of Boltzmann's surface entropy versus Gibbs' volume entropy. Both entropies have shortcomings -- while Boltzmann entropy predicts unphysical negative/infinite absolute temperatures for small systems with unbounded energy, Gibbs entropy entirely disallows negative absolute temperatures, in disagreement with experiments. We consider a relative energy window, motivated by the Heisenberg energy-time uncertainty principle and eigenstate thermalization in quantum mechanics. The proposed entropy ensures positive, finite temperatures for systems without a maximum limit on their energy and allows negative absolute temperatures in bounded energy systems, e.g., with population inversion. It also closely matches canonical ensemble predictions for prototypical systems, thus correctly describing the zero-point energy of an isolated quantum harmonic oscillator. Overall, we enable accurate thermodynamic models for isolated systems with few degrees of freedom.
description: 14 pages, 4 figures, and a supplement
Accurate Fruit Localisation for Robotic Harvesting using High Resolution LiDAR-Camera Fusion
Creators: name: Kang, Hanwen
name: Wang, Xing
name: Chen, Chao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Accurate depth-sensing plays a crucial role in securing a high success rate of robotic harvesting in natural orchard environments. Solid-state LiDAR (SSL), a recently introduced LiDAR technique, can perceive high-resolution geometric information of the scenes, which can be potential utilised to receive accurate depth information. Meanwhile, the fusion of the sensory information from LiDAR and camera can significantly enhance the sensing ability of the harvesting robots. This work introduces a LiDAR-camera fusion-based visual sensing and perception strategy to perform accurate fruit localisation for a harvesting robot in the apple orchards. Two SOTA extrinsic calibration methods, target-based and targetless-based, are applied and evaluated to obtain the accurate extrinsic matrix between the LiDAR and camera. With the extrinsic calibration, the point clouds and color images are fused to perform fruit localisation using a one-stage instance segmentation network. Experimental shows that LiDAR-camera achieves better quality on visual sensing in the natural environments. Meanwhile, introducing the LiDAR-camera fusion largely improves the accuracy and robustness of the fruit localisation. Specifically, the standard deviations of fruit localisation by using LiDAR-camera at 0.5 m, 1.2 m, and 1.8 m are 0.245, 0.227, and 0.275 cm respectively. These measurement error is only one one fifth of that from Realsense D455. Lastly, we have attached our visualised point cloud to demonstrate the highly accurate sensing method.
description: 11 pages, 17 figures, submit to COMPAG
ДИНАМИЧЕСКИЙ ЗНАК И ЖИВАЯ ТКАНЬ СОВРЕМЕННОСТИ
Creators: name: Александра Владимировна Володина
Publisher: name: Международный журнал исследований культуры
Year: 2020
Subjects: знак
аффект
отношение
формула пафоса
структуры чувства
интерпретанта
современная культура
фотография
биосемиотика
Елена Петровская
Жиль Делёз
Чарльз Сандерс Пирс
Эдуардо Кон
Тим Ингольд

description: Статья посвящена рассмотрению теории динамического знака, представленной в книге Е. Петровской «Возмущение знака. Культура против трансценденции». Эта линия философствования, связанная с интерпретацией знака как «материального тела изменений», следует за семиотикой Ч.С. Пирса и находит своё продолжение в ряде философских, антропологических и биосемиотических проектов, которые кратко очерчены в этой статье. Размышления о живой материальности знаков и о тех способах их действия, которые выпадают из логики изображения, кодирования, нарративизации или удвоения мира-объекта, обладают большим потенциалом для исследования процессов современного искусства (как в поэзии, прозе, фотографии и кино, так и в более широком социокультурном ландшафте). Объекты исследования здесь весьма разнородны, поскольку в фокусе внимания оказываются не сущностные их особенности, а сходная динамика их бытования и процессы означивания, концептуализируемые через переход и отношение. В статье предложен обзор исследовательских стратегий, развёрнутых в упомянутой книге, и отмечена их значимость в контексте актуальных семиотических подходов и философских тенденций.
Mixing "Magnetic'' and "Electric'' Ehlers--Harrison transformations: The Electromagnetic Swirling Spacetime and Novel Type I Backgrounds
Creators: name: Barrientos, José
name: Cisterna, Adolfo
name: Kolář, Ivan
name: Müller, Keanu
name: Oyarzo, Marcelo
name: Pallikaris, Konstantinos
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we obtain a complete list of stationary and axisymmetric spacetimes, generated from a Minkowski spacetime using the Ernst technique. We do so by operating on the associated seed potentials with a composition of Ehlers and Harrison transformations. In particular, assigning an additional ``electric'' or ``magnetic'' tag to the transformations, we investigate the new spacetimes obtained either via a composition of magnetic Ehlers and Harrison transformations (first part) or via a magnetic-electric combination (second part). In the first part, the resulting type D spacetime, dubbed electromagnetic swirling universe, features key properties, separately found in swirling and (Bonnor--)Melvin spacetimes, the latter recovered in appropriate limits. A detailed analysis of the geometry is included, and subtle issues are addressed. A detailed proof that the spacetime belongs to the Kundt family, is included, and a notable relation to the planar-Reissner-Nordström-NUT black hole is also meticulously worked out. This relation is further exploited to reverse-engineer the form of the solution in the presence of a nontrivial cosmological constant. A Schwarzschild black hole embedded into the new background is also discussed. In the second part, we present four novel stationary and axisymmetric asymptotically nonflat type I spacetimes, which are naively expected to be extensions of the Melvin or swirling solution including a NUT parameter or electromagnetic charges. We actually find that they are, under conditions, free of curvature and topological singularities, with the physical meaning of the electric transformation parameters in these backgrounds requiring further investigation.
Tsallis entropy and hyperbolicity
Creators: name: Kalogeropoulos, Nikos
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Some preliminary evidence suggests the conjecture that the collective behaviour of systems having long-range interactions may be described more effectively by the Tsallis rather than by the Boltzmann/Gibbs/Shannon entropy. To this end, we examine consequences of the biggest difference between these two entropies: their composition properties. We rely on a metric formalism that establishes the "hyperbolic" nature of Tsallis entropy and explore some of its consequences for the underlying systems. We present some recent and some forthcoming results of our work
description: 5 pages, No figures. Standard LaTeX2e. Contributed talk to ICNAAM 2013, Rhodes, Greece 21-27 September 2013. To appear in the proceedings
Bridging Traditional Wisdom and Modern Science: Indian Medicinal Herbs for Neurodegenerative Diseases
Creators: name: Sneha Das
name: Tannu Jha
Publisher: name: Zenodo
Year: 2024
Subjects: Neurodegenerative disease
Herbal Plants
Ashwagandha
Cinnamon

description: In the quest for effective treatments for neurodegenerative diseases, the ancient wisdom of traditional Indian medicine, particularly Ayurveda, has become a source of inspiration for modern scientific exploration. The rich tapestry of Indian medicinal herbs and formulations, rooted in centuries-old practices, offers a promising avenue for understanding and addressing conditions like Alzheimer's and Parkinson's diseases. This article explores the convergence of traditional knowledge and scientific assessment, shedding light on select Indian medicinal herbs that hold potential in the realm of neurodegenerative diseases.
Semantic localization on BIM-generated maps using a 3D LiDAR sensor
Creators: name: Yin, Huan
name: Lin, Zhiyi
name: Yeoh, Justin K. W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Conventional sensor-based localization relies on high-precision maps, which are generally built using specialized mapping techniques involving high labor and computational costs. In the architectural, engineering and construction industry, Building Information Models (BIM) are available and can provide informative descriptions of environments. This paper explores an effective way to localize a mobile 3D LiDAR sensor on BIM-generated maps considering both geometric and semantic properties. First, original BIM elements are converted to semantically augmented point cloud maps using categories and locations. After that, a coarse-to-fine semantic localization is performed to align laser points to the map based on iterative closest point registration. The experimental results show that the semantic localization can track the pose successfully with only one LiDAR sensor, thus demonstrating the feasibility of the proposed mapping-free localization framework. The results also show that using semantic information can help reduce localization errors on BIM-generated maps.
description: Accepted by Automation in Construction. Please refer to the published version online. A video demonstration is at https://youtu.be/6jscy2Y5mj4
Mechanical design and analysis for a low beta squeezed half-wave resonator
Creators: name: He, Shoubo
name: He, Yuan
name: Zhang, Shenghu
name: Yue, Weiming
name: Zhang, Cong
name: Wang, Zhijun
name: Wang, Ruoxu
name: Xu, Mengxin
name: Huang, Shichun
name: Huang, Yulu
name: Jiang, Tiancai
name: Wang, Fengfeng
name: Zhang, Shengxue
name: Zhao, Hongwei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences
subject: 74F15

description: A superconducting half-wave resonator (HWR) of frequency=162.5 MHz and β=0.09 has been developed at Institute of Modern Physics. Mechanical stability of the low beta HWR cavity is a big challenge in cavity design and optimization. The mechanical deformations of a radio frequency superconducting cavity could be a source of instability, both in continues wave(CW) operation or in pulsed mode. Generally, the lower beta cavities have stronger Lorentz force detuning than that of the higher beta cavities. In this paper, a basic design consideration in the stiffening structure for the detuning effect caused by helium pressure and Lorentz force has been presented. The mechanical modal analysis has been investigated with finite element method(FEM). Based on these considerations, a new stiffening structure has been promoted for the HWR cavity. The computation results concerning the frequency shift show that the low beta HWR cavity with new stiffening structure has low frequency sensitivity coefficient, Lorentz force detuning coefficient KL and stable mechanical property.
description: this work is supported by Strategic Priority Research Program of CAS (Grant No. Y1020700ADS)and National Natural Science Foundation of China (Grant No. 91026001)
Mimetic-$f(Q)$ gravity: cosmic reconstruction and energy conditions
Creators: name: Kaczmarek, Adam Z.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this study, we present a novel approach to mimetic gravity incorporating a non-zero nonmetricity tensor with vanishing torsion and curvature, establishing a generalized mimetic-$f(Q)$ gravity framework. Using the Lagrange multiplier method, we have obtained and discussed characteristics of the theory's field equations. In order to study cosmic evolution given by the hybrid scale factor, we implemented the reconstruction method in two different ways. In the first case, we have obtained corresponding Lagrange multiplier $η$ and potential $U$ for the specific $f(Q)=f(Q)=Q-6λM^2\big(\frac{Q}{6M^2}\big)^α$ function, while in the second scenario we have recovered $f(Q)$ functional and mimetic potential for the given Lagrange multiplier $η_0+γH^2$. Subsequently, we explore the fundamental properties of the $f(Q)=Q-6λM^2\big(\frac{Q}{6M^2}\big)^α$ model and analyse the energy conditions to establish its validity. Our findings indicate that the framework introduced herein allows for the derivation of a wide range of viable cosmological models that satisfy energy constraints that are necessary in description of the accelerated expansion.
description: 17 pages, 3 figures, appendix
Drell-Yan processes with WINHAC
Creators: name: Placzek, W.
name: Jadach, S.
name: Krasny, M. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the Monte Carlo event generator WINHAC for Drell-Yan processes in proton-proton, proton-antiproton, proton-ion and ion-ion collisions. It features multiphoton radiation within the Yennie-Frautschi-Suura exclusive exponentiation scheme with O(alpha) electroweak corrections for the charged-current (W+/W-) processes and multiphoton radiation generated by PHOTOS for neutral-current (Z+gamma) ones. For the initial-state QCD/QED parton shower and hadronisation it is interfaced with PYTHIA. It includes several options, e.g. for the polarized W-boson production, generation of weighted/unweighted events, etc. WINHAC was cross-checked numerically at the per-mille level with independent Monte Carlo programs, such as HORACE and SANC. It has been used as a basic tool for developing and testing some new methods of precise measurements of the Standard Model parameters at the LHC, in particular the W-boson mass. Recently, it has been applied to simulations of double Drell-Yan processes resulting from double-parton scattering, in order to assess their influence on the Higgs-boson detection at the LHC in its ZZ and W+W- decay channels.
description: 8 pages; presented at the XXXVII International Conference of Theoretical Physics "Matter To The Deepest", Ustron, Poland, 1-6 September 2013; to appear in Acta Physica Polonica B
title: Pietas In Parentem; 1770
title: Heldenliebe des Sohnes gegen seinen Vater ; auf offentlicher Schaubühne vorgestellet von dem Churfürstl. Lyceo und Gymnasio der Gesellschaft Jesu zu Burghausen den 4. und 6. des Herbstmonats 1770
titleType: Subtitle
Creators: name: Bachschmid, Anton Adam
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2008

description: Perioche. - Text lat. und dt.
«СЦЕНА В БИБЛИОТЕКЕ»: ПРОБЛЕМА ВЕЩИ И РИТОРИКА ФОТОГРАФИИ
Creators: name: Екатерина Викторовна Васильева
Publisher: name: Международный журнал исследований культуры
Year: 2020
Subjects: Уильям Генри Фокс Тэлбот
фотография
калотайп
Розалинда Краусс
«Сцена в библиотеке»
«Карандаш природы»

description: Данная статья посвящена фотографии Уильяма Генри Фокса Тэлбота «Сцена в библиотеке», которая была опубликована в 1844 году в книге «Карандаш природы» – первой книге о фотографии и первой книги с фотографическими иллюстрациями. Статья рассматривает снимок Тэлбота как важный прецедент. «Сцена в библиотеке» объединила смысловые и изобразительные принципы, унаследованные от культуры XVII – XVIII веков, и, одновременно, представила концепты, формирующие визуальную систему и риторику фотографии в XX – XXI столетии. «Сцена в библиотеке» обозначила проблему соотношения визуального и вербального, сделав явленное частью сокрытой речи, кадр Тэлбота представил латентную риторику фрагментом фотографической системы. Этот снимок оказался одним из первых изображений, которое затронуло проблему сокрытого как смысловую программу фотографии, он сделал ее возможным и стал центральным элементом современной дискуссии о фотографии, став обращением к скрытой риторике кадра с его функциональной неясностью и смысловой неопределенностью. Данное исследование рассматривает визуальную риторику «Сцены в библиотеки», анализирует ее визуальную программу и смысловой вектор.
Closed-loop Identification of a MSW Grate Incinerator using Bayesian Optimization for Selecting Model Inputs and Structure
Creators: name: Lips, Johannes
name: DeYoung, Stefan
name: Schönsteiner, Max
name: Lens, Hendrik
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The creation of low-order dynamic models for complex industrial systems is complicated by disturbances and limited sensor accuracy. This work presents a system identification procedure that uses machine learning methods and process knowledge to robustly identify a low-order closed-loop model of a municipal solid waste (MSW) grate incineration plant. These types of plants are known for their strong disturbances coming from fuel composition fluctuations. Using Bayesian optimization, the algorithm ranks and selects inputs from the available sensor data and chooses the model structure. This results in accurate models with low complexity while avoiding overfitting. The method is applied and validated using data of an industrial MSW incineration plant. The obtained models give excellent predictions and confidence intervals for the steam capacity and intermediate quantities such as supply air flow and flue gas temperature. The identified continuous-time models are fully given, and their step-response dynamics are discussed. The models can be used to develop model-based unit control schemes for grate incineration plants. The presented method shows great potential for the identification of over-actuated systems or disturbed systems with many sensors.
The Prince and Princess of Wales: Two Eighteenth-Century Portraits at Columbia University
Creators: name: Ferrari, Roberto C.
Publisher: name: Columbia University
Year: 2016
Subjects: Columbia University
Portraits
Eighteenth century
Art--Provenance
Painting
Art

description: For more than fifty years, two large royal portraits have hung high on the south wall of the main reading room of Butler Library. Donated by Edmund Astley Prentis in 1949, they were presented to Columbia as portraits by unknown artists of King George II and his wife. New research by the author shows they are in fact portraits of their son and daughter-in-law, the Prince and Princess of Wales, Frederick Louis and Augusta, the future parents of King George III. This essay discusses these portraits in more detail, including the identity of the painters and the discovery of a signature and date on one.
AT-2FF: Adaptive Type-2 Fuzzy Filter for De-noising Images Corrupted with Salt-and-Pepper
Creators: name: Singh, Vikas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Noise is inevitably common in digital images, leading to visual image deterioration. Therefore, a suitable filtering method is required to lessen the noise while preserving the image features (edges, corners, etc.). This paper presents the efficient type-2 fuzzy weighted mean filter with an adaptive threshold to remove the SAP noise. The present filter has two primary steps: The first stage categorizes images as lightly, medium, and heavily corrupted based on an adaptive threshold by comparing the M-ALD of processed pixels with the upper and lower MF of the type-2 fuzzy identifier. The second stage eliminates corrupted pixels by computing the appropriate weight using GMF with the mean and variance of the uncorrupted pixels in the filter window. Simulation results vividly show that the obtained denoised images preserve image features, i.e., edges, corners, and other sharp structures, compared with different filtering methods.
Modified equipartition calculation for supernova remnants. Cases α=0.5 and α=1
Creators: name: Arbutina, B.
name: Urosevic, D.
name: Vucetic, M. M.
name: Pavlovic, M. Z.
name: Vukotic, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The equipartition or minimum-energy calculation is a well-known procedure for estimating magnetic field strength and total energy in the magnetic field and cosmic ray particles by using only the radio synchrotron emission. In one of our previous papers we have offered a modified equipartition calculation for supernova remnants (SNRs) with spectral indices 0.5
description: 8 pages, 1 table, accepted for publication in ApJ; for associated web application, see http://poincare.matf.bg.ac.rs/~arbo/eqp/
Temporally coherent backmapping of molecular trajectories from coarse-grained to atomistic resolution
Creators: name: Shmilovich, Kirill
name: Stieffenhofer, Marc
name: Charron, Nicholas E.
name: Hoffmann, Moritz
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Coarse-graining offers a means to extend the achievable time and length scales of molecular dynamics simulations beyond what is practically possible in the atomistic regime. Sampling molecular configurations of interest can be done efficiently using coarse-grained simulations, from which meaningful physicochemical information can be inferred if the corresponding all-atom configurations are reconstructed. However, this procedure of backmapping to reintroduce the lost atomistic detail into coarse-grain structures has proven a challenging task due to the many feasible atomistic configurations that can be associated with one coarse-grain structure. Existing backmapping methods are strictly frame-based, relying on either heuristics to replace coarse-grain particles with atomic fragments and subsequent relaxation, or parameterized models to propose atomic coordinates separately and independently for each coarse-grain structure. These approaches neglect information from previous trajectory frames that is critical to ensuring temporal coherence of the backmapped trajectory, while also offering information potentially helpful to produce higher-fidelity atomic reconstructions. In this work we present a deep learning-enabled data-driven approach for temporally coherent backmapping that explicitly incorporates information from preceding trajectory structures. Our method trains a conditional variational autoencoder to non-deterministically reconstruct atomistic detail conditioned on both the target coarse-grain configuration and the previously reconstructed atomistic configuration. We demonstrate our backmapping approach on two exemplar biomolecular systems: alanine dipeptide and the miniprotein chignolin. We show that our backmapped trajectories accurately recover the structural, thermodynamic, and kinetic properties of the atomistic trajectory data.
МЕМБРАНЫ, ОБОЛОЧКИ, ГРАНИЦЫ: (ИМ)МАТЕРИАЛЬНОСТЬ ОБРАЗА И ЕГО ТОПОЛОГИЯ
Creators: name: Нигина Рустамовна Шаропова
Publisher: name: Международный журнал исследований культуры
Year: 2020
Subjects: Образ
изображение
визуальные исследования
новый материализм
материальный поворот
агентность
проективная геометрия
проективная плоскость
топология
кросскэп
неориентируемые поверхности

description: В статье рассматривается вопрос о материальных аспектах образа. При этом учитывается перспектива нового материализма, в рамках которой многие авторы предлагают переопределить понятие материи: отказаться от традиционных представлений о материальном как о пассивном субстрате активной формы, воспринимающим воздействия. В этой парадигме материю предлагают мыслить агентно и перформативно. Интерес к материальному также затронул область визуальных исследований и теории образа. Вопрос об отношениях между образом и его материальной средой всегда представлялся проблемным. В статье с опорой на основные положения проективной геометрии, которая непосредственно связана с визуальным – как с самим зрением, так и с изображениями, анализируется традиционно отмечаемый разрыв между образом и его материальной основой, а также физическим пространством материальных тел. При этом предпринимается попытка переосмыслить этот зазор. Приводятся некоторые примеры стирания границы между содержанием образа и его материальными условиями, которое становится возможным благодаря вышеупомянутому переосмыслению представлений о материальном. При этом также рассматривается представление о самом образе как о границе. Приводятся рассуждения о том, что образ, будучи подобной границей, разделяет (внутреннее/внешнее, res cogitans/res extensa, имманентное/трансцендентное), а также исследуется вопрос о топологии этой границы, которая оказывается односторонней поверхностью.
Orbital Mixer: Using Atomic Orbital Features for Basis Dependent Prediction of Molecular Wavefunctions
Creators: name: Shmilovich, Kirill
name: Willmott, Devin
name: Batalov, Ivan
name: Kornbluth, Mordechai
name: Mailoa, Jonathan
name: Kolter, J. Zico
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Leveraging ab initio data at scale has enabled the development of machine learning models capable of extremely accurate and fast molecular property prediction. A central paradigm of many previous works focuses on generating predictions for only a fixed set of properties. Recent lines of research instead aim to explicitly learn the electronic structure via molecular wavefunctions from which other quantum chemical properties can directly be derived. While previous methods generate predictions as a function of only the atomic configuration, in this work we present an alternate approach that directly purposes basis dependent information to predict molecular electronic structure. The backbone of our model, Orbital Mixer, uses MLP Mixer layers within a simple, intuitive, and scalable architecture and achieves competitive Hamiltonian and molecular orbital energy and coefficient prediction accuracies compared to the state-of-the-art.
Automate where Automation Fails: Proof Strategies for Frama-C/WP. Companion Artifact for the Paper Submitted to TACAS 2024.
Creators: name: Correnson, Loïc
name: Blanchard, Allan
name: Djoudi, Adel
name: Kosmatov, Nikolai
Publisher: name: Zenodo
Year: 2023
Subjects: deductive verification
proof automation
interactive proof scripts
proof strategies
Frama-C

description: This artifact aims to demonstrate the new extension for Frama-C/WP for automatic proof script generation based on proof strategies, presented in the tool demo paper
Loïc Correnson, Allan Blanchard, Adel Djoudi and Nikolai Kosmatov."Automate where Automation Fails: Proof Strategies for Frama-C/WP"
submitted to TACAS 2024. The artifact contains:
- the new version of the (open-source) Frama-C tool and its deductiveverification plugin WP, contaning the new extension for automatic proofscript generation based on proof strategies,
- documentation of the WP plug-in containing a section on the new features,
- illustrative examples of applications of the new features presentedin the paper.
Structure and Dynamics of [PF$_6$][P$_{1,2,2,4}$] from Molecular Dynamics Simulations
Creators: name: Carignano, Marcelo A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Diethyl(methyl)(isobutyl)phosphonium hexafluorophosphate, [PF$_6$][P$_{1,2,2,4}$], is an organic ionic plastic crystal with potential uses as a solid electrolyte in storage and light harvesting devices. In this work we present a molecular dynamics simulation study for this material covering an extended temperature range, from 175 K to 500 K. The simulations predicts a transition from the crystalline to a {\em semi} plastic phase at 197 K, the onset of cation jump-like rotations at 280 K, a third transition at 340 K to a {\em full} plastic phase and melting to 450 K. Overall, the simulations show a good agreement with the experimental findings providing a wealth of detail in the structural and dynamic properties of the system.
Polycyclic aromatic hydrocarbon exposure, obesity and childhood asthma in an urban cohort
Creators: name: Jung, Kyung
name: Perzanowski, Matthew S.
name: Rundle, Andrew G.
name: Moors, Kathleen
name: Yan, Beizhan
name: Chillrud, Steven N.
name: Whyatt, Robin M.
name: Camann, David
name: Perera, Frederica P.
name: Miller, Rachel L.
Publisher: name: Columbia University
Year: 2014
Subjects: Polycyclic aromatic hydrocarbons--Toxicology
Polycyclic aromatic hydrocarbons--Physiological effect
Overweight children
Asthma in children
Air--Pollution
Polycyclic aromatic hydrocarbons
Atmosphere
Environmental sciences
Environmental health

description: Background: Exposure to traffic-related air pollutants, including polycyclic aromatic hydrocarbons (PAHs) from traffic emissions and other combustion sources, and childhood obesity, have been implicated as risk factors for developing asthma. However, the interaction between these two on asthma among young urban children has not been studied previously. Methods: Exposure to early childhood PAHs was measured by two week residential indoor monitoring at age 5–6 years in the Columbia Center for Children's Environmental Health birth cohort (n=311). Semivolatile [e.g., methylphenanthrenes] and nonvolatile [e.g., benzo(a)pyrene] PAHs were monitored. Obesity at age 5 was defined as a body mass index (BMI) greater than or equal to the 95th percentile of the year 2000 age- and sex-specific growth charts (Center for Disease Control). Current asthma and recent wheeze at ages 5 and 7 were determined by validated questionnaires. Data were analyzed using a modified Poisson regression in generalized estimating equations (GEE) to estimate relative risks (RR), after adjusting for potential covariates. Results: Neither PAH concentrations or obesity had a main effect on asthma or recent wheeze. In models stratified by presence/absence of obesity, a significant positive association was observed between an interquartile range (IQR) increase in natural log-transformed 1-methylphenanthrene (RR [95% CI]: 2.62 [1.17–5.88] with IQRln=0.76), and 9-methylphenanthrene (2.92 [1.09–7.82] with IQRln=0.73) concentrations and asthma in obese children (n=63). No association in non-obese (n=248) children was observed at age 5 (Pinteraction<0.03). Similar associations were observed for 3-methylphenanthrene, 9-methylphenanthrene, and 3,6-dimethylphenanthrene at age 7. Conclusions: Obese young children may be more likely to develop asthma in association with greater exposure to PAHs, and methylphenanthrenes in particular, than non-obese children.
A note on the existence of non-monotone non-oscillating wavefronts
Creators: name: Ivanov, Anatoli
name: Gomez, Carlos
name: Trofimchuk, Sergei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 45G10, 34K12, 92D25

description: In this note, we present a monostable delayed reaction-diffusion equation with the unimodal birth function which admits only non-monotone wavefronts. Moreover, these fronts are either eventually monotone (in particular, such is the minimal wave) or slowly oscillating. Hence, for the Mackey-Glass type diffusive equations, we answer affirmatively the question about the existence of non-monotone non-oscillating wavefronts. As it was recently established by Hasik {\it et al.} and Ducrot {\it et al.}, the same question has a negative answer for the KPP-Fisher equation with a single delay.
description: 11 pages, 3 figures, submitted
title: Der verlohrne Sohn; [1770]
title: ein Lustspiel von dreyen Aufzügen vorgestellt von Schülern der lateinischen Grundschule zu Burghausen als diese auf höchste Freygebigkeit des .... Herrn Emanuel des ... Stifts und Klosters Raittenhaslach ... Abbten ... mit ... Ehrenzeichen belohnt wurden, den 29. und 31. Augusts im Jahr 1770
titleType: Subtitle
Creators: name: Zeidler, Bernhard
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2008

description: Perioche, und Text des musikal. Zwischenspiels. - In Fraktur
Near field of an oscillating electric dipole and cross-polarization of a collimated beam of light: two sides of the same coin
Creators: name: Aiello, Andrea
name: Ornigotti, Marco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We address the question of whether there exists a hidden relationship between the near-field distribution generated by an oscillating electric dipole and the so-called cross polarization of a collimated beam of light. We find that the answer is affirmative by showing that the complex field distributions occurring in both cases have a common physical origin: the requirement that the electromagnetic fields must be transverse.
ПОЭТИКА УСТНОЙ РЕЧИ В ТЕАТРЕ С УЧАСТИЕМ ЛЮДЕЙ С ОСОБЫМИ ПОТРЕБНОСТЯМИ НА ПРИМЕРЕ СПЕКТАКЛЯ «РАЗГОВОРЫ» ПРОЕКТА «КВАРТИРА» (САНКТ-ПЕТЕРБУРГ, 2017–2019)
Creators: name: Александра Олеговна Дунаева
Publisher: name: Международный журнал исследований культуры
Year: 2020
Subjects: звучащая речь
устная речь
проект «Квартира»
социальный театр
инклюзия
Б. Гаспаров
теория перформативности
Э. Фишер-Лихте
М. Фуко

description: В статье автор рассматривает инклюзивный спектакль «Разговоры» петербургского проекта «Квартира». Специфическая материальность спектакля (Э. Фишер-Лихте) фиксируется через звучащую в нем речь актеров с РАС и синдромом Дауна. Анализ поэтики устной речи проводится через концепцию устной речи как семиотического объекта (Б.Гаспаров). Также автор опирается на концепцию речевых жанров М.Бахтина. Делается вывод о том, что в рамках спектакля «табуированная» речь людей с особыми потребностями средствами театра «разритуализируется» (М.Фуко) и обретает статус социальной. В этом проявляется единство художественной и социальной составляющих спектакля.
Parameter estimation for an expanding universe
Creators: name: Wang, Jieci
name: Tian, Zehua
name: Jing, Jiliang
name: Fan, Heng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the parameter estimation for excitations of Dirac fields in the expanding Robertson-Walker universe. We employ quantum metrology techniques to demonstrate the possibility for high precision estimation for the volume rate of the expanding universe. We show that the optimal precision of the estimation depends sensitively on the dimensionless mass $\tilde{m}$ and dimensionless momentum $\tilde{k}$ of the Dirac particles. The optimal precision for the ratio estimation peaks at some finite dimensionless mass $\tilde{m}$ and momentum $\tilde{k}$. We find that the precision of the estimation can be improved by choosing the probe state as an eigenvector of the hamiltonian. This occurs because the largest quantum Fisher information is obtained by performing projective measurements implemented by the projectors onto the eigenvectors of specific probe states.
description: 12 pages, 2 figures, published version