cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Supplementary material for "Molecular dynamics simulation of nanoindentation in Al and Fe"
Creators: name: Luu, Thien
Publisher: name: Zenodo
Year: 2024
Subjects: Nanoindentation
MD simulations
Hardness
Aluminum
Iron

description: Indentation is one of the most widely used methods to determine the characteristics of metallic materials. Molecular dynamics (MD) simulations are a powerful tool to investigate the material behavior at the atomistic scale during nanoindentation and to get insights into the understanding of the plastic deformation of a material. However, the optimal choice of parameters for the simulation is not clear, and there is a large body of literature with strongly different simulation configurations. In this study, we systematically investigate the effect of the choice of interaction potentials, substrate size, indenter size and indentation velocity on hardness and defect generation during nanoindentation of face-centered cubic and body-centered cubic materials. As prototypical materials we consider aluminum and iron single crystals. Our sensitivity analysis reveals that the thickness of the substrate has a large influence on the measured hardness by MD simulations, while the impact of the indentation velocity is small. The results are useful for researchers planning to use MD to study the nanoindentation process using highly expensive potentials such as ReaxFF and COMB3 or small indenter velocities. This article aims to provide a guideline for designing nanoindentation simulations using MD.
title: ADCO, Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Cart. 23 (G 127), 310 folios, f. 00193
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2011
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00193, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00193, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
i-PI 3.0: a flexible and efficient framework for advanced atomistic simulations
Creators: name: Litman, Yair
name: Kapil, Venkat
name: Feldman, Yotam M. Y.
name: Tisi, Davide
name: Begušić, Tomislav
name: Fidanyan, Karen
name: Fraux, Guillaume
name: Higer, Jacob
name: Kellner, Matthias
name: Li, Tao E.
name: Pós, Eszter S.
name: Stocco, Elia
name: Trenins, George
name: Hirshberg, Barak
name: Rossi, Mariana
name: Ceriotti, Michele
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Atomic-scale simulations have progressed tremendously over the past decade, largely due to the availability of machine-learning interatomic potentials. These potentials combine the accuracy of electronic structure calculations with the ability to reach extensive length and time scales. The i-PI package facilitates integrating the latest developments in this field with advanced modeling techniques, thanks to a modular software architecture based on inter-process communication through a socket interface. The choice of Python for implementation facilitates rapid prototyping but can add computational overhead. In this new release, we carefully benchmarked and optimized i-PI for several common simulation scenarios, making such overhead negligible when i-PI is used to model systems up to tens of thousands of atoms using widely adopted machine learning interatomic potentials, such as Behler-Parinello, DeePMD and MACE neural networks. We also present the implementation of several new features, including an efficient algorithm to model bosonic and fermionic exchange, a framework for uncertainty quantification to be used in conjunction with machine-learning potentials, a communication infrastructure that allows deeper integration with electronic-driven simulations, and an approach to simulate coupled photon-nuclear dynamics in optical or plasmonic cavities.
title: ADCO, Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Cart. 32 (G 136), 745 folios, f. 1071
Creators: name: de la Côte d'Or, Archives départementales
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 1071, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 1071, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Towards Understanding the Working Mechanism of Text-to-Image Diffusion Model
Creators: name: Yi, Mingyang
name: Li, Aoxue
name: Xin, Yi
name: Li, Zhenguo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recently, the strong latent Diffusion Probabilistic Model (DPM) has been applied to high-quality Text-to-Image (T2I) generation (e.g., Stable Diffusion), by injecting the encoded target text prompt into the gradually denoised diffusion image generator. Despite the success of DPM in practice, the mechanism behind it remains to be explored. To fill this blank, we begin by examining the intermediate statuses during the gradual denoising generation process in DPM. The empirical observations indicate, the shape of image is reconstructed after the first few denoising steps, and then the image is filled with details (e.g., texture). The phenomenon is because the low-frequency signal (shape relevant) of the noisy image is not corrupted until the final stage in the forward process (initial stage of generation) of adding noise in DPM. Inspired by the observations, we proceed to explore the influence of each token in the text prompt during the two stages. After a series of experiments of T2I generations conditioned on a set of text prompts. We conclude that in the earlier generation stage, the image is mostly decided by the special token [\texttt{EOS}] in the text prompt, and the information in the text prompt is already conveyed in this stage. After that, the diffusion model completes the details of generated images by information from themselves. Finally, we propose to apply this observation to accelerate the process of T2I generation by properly removing text guidance, which finally accelerates the sampling up to 25\%+.
High-Fidelity Cyber and Physical Simulation of Water Distribution Systems. I: Models and Data
Creators: name: Murillo, Andrés
name: Taormina, Riccardo
name: Tippenhauer, Nils Ole
name: Salaorni, Davide
name: van Dijk, Robert
name: Jonker, Luc
name: Vos, Simcha
name: Weyns, Maarten
name: Galelli, Stefano
Publisher: name: CISPA
Year: 2024

description: Numerical simulation models are a fundamental tool for planning and managing smart water networks—an evolution of water distribution systems in which physical assets are monitored and controlled by information and communication technologies. While simulation models allow us to understand the interactions between physical processes and abstract control strategies, they ignore key implementation aspects of distributed control systems, such as the required communication over digital links. As a result, the effects of anomalies and faults in the communication on the process control cannot be investigated with existing tools. In this work, we fill this gap by introducing DHALSIM (Digital HydrAuLic SIMulator), a numerical modelling platform combining EPANET-based process simulation with a network and host emulation environment, offering a high-fidelity representation of the processes occurring in the cyber domain. We illustrate DHALSIM’s key functionalities by implementing it on a benchmark water distribution system, present case studies of simulated network traffic, and demonstrate how anomalies in the behavior of the communication network affect the process data received by the supervisory control and data acquisition (SCADA) server. In a companion paper, we further illustrate how DHALSIM enables research opportunities in the domain of cyber-physical security. The easily customizable and open source DHALSIM provides a “workbench” for studying smart water networks, developing digital twins, and designing a broad spectrum of engineering solutions.
The role of agency according to Bhagavad-gītā – Ācārya dr. Sthaneshwar Timalsina
Creators: name: Timalsina, Staneshwar
Publisher: name: Zenodo
Year: 2022
Subjects: Guhyakālī
Kubjika
amnaya
Kaula
timalsina
Divine Mother
consciousness
krama
Kula
Īśāna
shakta upāya
Saundaryalahari
Mālinīvijayottaratantra
Chandi
advaita vedanta
sthaneshwar timalsina
vimarsha-foundation
Sarvamnaya
Abhinavagupta
vedanta
Kali
Devi Mahatmya
trika
Spanda
Shiva Sutra
Tantra
mahadeva
saivadvaita
shakti
sarvamnaya-oral-tradition-archive
Vasugupta
Tripura Rahasya
sarvamnaya
anava upaya
agama
Sadāśiva
Camunda
Shiva
Bhairava
yantra
Mahakali
tripura
Tantric philosophy
Shaiva
tantraloka
Durga
shambhava
Kashmir Shaivism
Tripurasundari

description: In this clip Śaivācārya and Professor Sthaneshwar Timalsina answers a question about suffering and its presence in our lives. Instead of seeing it as an innate category of our worldly existence, and consequently an escape from this world being the only solution to end suffering, he affirms bliss (ānanda) as the essential nature of the world and our own being. In that sense, by gazing inward we are capable of experiencing this bliss, this sense of plenitude and fullness, and engage in the world free from suffering

Excerpt from: https://www.youtube.com/watch?v=HgfOb11WXws&list=PL9t2HU2EqAuzyMfVvEB0JJa0wJfKIJrt8&index=37&t=56s

Original YouTube video: https://www.youtube.com/watch?v=-SwpDO5x78o

This presentation is part of the Sarvāmnāya Oral Tradition Archive.
Vimarsha Foundation. (2025). The Sarvāmnāya Oral Tradition Archive [Data set]. Zenodo. https://doi.org/10.5281/zenodo.15188107
The hitchhiker's guide to the sport ecosystem: development of a new theoretical framework and organisational model
Creators: name: Morgan, Siena
Publisher: name: Loughborough University
Year: 2024

description: Understanding the modern sport landscape has been daunting and vague to date. Analysis of how sport comes together is divided into either the use of analogies and imagery, or incomprehensive models. The problem with either of these two approaches is that they are incomplete in their understanding of sport as a whole. There are certainly situations in which isolated models are most appropriate, however, there also needs to be a mechanism for comprehensive analysis within the industry. The notion of the ecosystem begins to offer such a mechanism. However, historically, the ecosystem in business organisations is predicated on the biological imagery (Morgan, 2006), which was transformed by the works of Moore (1993, 1996) and Iansiti and Levien (2002, 2004a, 2004b) into a framework which could then describe how businesses both function, survive, and thrive (in accordance with the biological imagery foundations). It is the work of Thomas (2013) that provided the most developed version of the notion of business ecosystems, with its own theoretical underpinnings, and modelling system. Direct application and use of the Thomas (2013) model was limited in its use in the sport context, though, due to the uniqueness and nuances of the industry. Therefore, the overarching goal of this thesis was to create a sport-specific theoretical framework and associated Sport Ecosystem Model. This was achieved by narrative examination of the literature, set forth as a chronology which describes the evolution of the ecosystem construct. Ecosystem elements, and theoretical foundations are then examined in their sport contexts, showcasing how use in sport is isolationist in nature. Elements of each, both sport and ecosystem, were then analysed and catalogued into the Theoretical Framework (TF), which underpinned the empirical study of an entire Sport Ecosystem (SE). The study was cross-organisational in its approach, examining the international and continental levels of sport, along with the national and grassroots levels, totalling eight organisations. Twenty-nine participants across these organisations were interviewed, using a semi-structured script, and using a novel sampling method, which directly reflected the nature of the SE. From these interviews, four major themes were identified: participant/stakeholder positioning, governance structures, interrelationship between stakeholders, and value deliverables. These four themes were then interpreted and dissected into three main conceptual questions (CQs), which, when combined, provide the foundational understanding of a SE. Each CQ is formed of a corresponding set of Theoretical Propositions (TPs), which illustrate and explain the nuances of sport and how each aspect is interconnected to co-create value.
Marketing Spreads for Eggs and Frying Chickens in the United States and Selected Cities
Creators: name: Gray, Leo R.
name: Gray, Leo R.
Publisher: name: Unknown
Year: 1963
Subjects: subject: Demand and Price Analysis
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Farm-retail price spreads in the United States decreased 5 percent for eggs but increased about 4 percent for frying chickens from 1961 to 1962. Both prices received by farmers and prices paid by consumers for eggs purchased in retail stores were down about 6 percent in 1962 from the previous year. Farm values and consumer prices for ready-to-cook frying chickens both were higher in 1962 than in 1961, but consumer prices increased slightly more than farm values. The farm share of the retail dollar spent for eggs was the same in 1962 as in 1961; the farm share of the dollar spent for frying chickens was 1 cent higher than in the preceding year. This article describes recent prices and price spreads for eggs and frying chickens in the United States and in 11 selected cities.
description: Reprinted from the Marketing and Transportation Situation, February 1963.
MOESM1 of Histamine H4 receptor regulates IL-6 and INF-Îł secretion in native monocytes from healthy subjects and patients with allergic rhinitis
Creators: name: Peng, Hua
name: Wang, Jian
name: Ye, Xiao
name: Cheng, Jie
name: Huang, Cheng
name: Li, Li
name: Li, Tian
name: Li, Chun
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Computational Biology

description: Additional file 1. Supplemental materials and methods.
title: ADCO, Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Cart. 31 (G 135), 549 folios, f. 0117
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0117, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Huitième cartulaire de Saint-Étienne de Dijon (1661-1667), Archives départementales de la Côte-d'Or, Cart. 31 (G 135), 549 folios, f. 0117, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
A waveform model for the missing quadrupole mode from black hole coalescence: memory effect and ringdown of the $(\ell=2,m=0)$ spherical harmonic
Creators: name: Rosselló-Sastre, Maria
name: Husa, Sascha
name: Bera, Sayantani
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we describe a model for the $(\ell=2, m=0)$ spherical harmonic mode of the gravitational wave signal emitted by the coalescence of binary black holes, in particular, spin-aligned systems. This mode can be viewed as consisting of two components, gravitational wave memory and quasi-normal ringdown, which are both included in our model. Depending on the parameters of the binary and the sensitivity curve of the detector, but in particular for high masses, the ringdown part can contribute significantly to the signal-to-noise ratio. The model is constructed using the methods of the phenomenological waveforms program, and is calibrated to public numerical relativity data from the Simulating eXtreme Spacetimes (SXS) waveforms catalog, with the analytical results derived from the Bondi-Metzner-Sachs (BMS) balance laws. The code has been implemented as an extension to the computationally efficient IMRPhenomTHM model, it can therefore be used for computationally expensive applications such as Bayesian parameter estimation. The region of validity of our model in the parameter space is given by: $q\leq10$ and $χ_{1},χ_{2}\in[-1,1]$, and no restrictions apply in terms of the length of the waveforms.
description: 20 pages, 13 figures
Three-dimensional Magneto-optical Trapping of Barium Monofluoride
Creators: name: Zeng, Zixuan
name: Deng, Shuhua
name: Yang, Shoukang
name: Yan, Bo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: As a heavy molecule, barium monofluoride (BaF) presents itself as a promising candidate for measuring permanent electric dipole moment. The precision of such measurements can be significantly enhanced by utilizing a cold molecular sample. Here we report the realization of three-dimensional magneto-optical trapping (MOT) of BaF molecules. Through the repumping of all the vibrational states up to $v=3$, and rotational states up to $N=3$, we effectively close the transition to a leakage level lower than $10^{-5}$. This approach enables molecules to scatter a sufficient number of photons required for laser cooling and trapping. By employing a technique that involves chirping the slowing laser frequency, BaF molecules are decelerated to near-zero velocity, resulting in the capture of approximately $3\times 10^3$ molecules in a dual-frequency MOT setup. Our findings represent a significant step towards the realization of ultracold BaF molecules and the conduct of precision measurements with cold molecules.
description: 5 pages, 4 figures
Brand Jane - Finch: A Critical Discourse Analysis of Print Media Discourse on a Toronto Low Income Community
Creators: name: Hall, Haide T
Publisher: name: Zenodo
Year: 2008
Subjects: race
toronto
crime
critical theory
racism
low income areas
discourse analysis

description: The theoretical frameworks of critical discourse analysis (CDA), framing and branding are fused in this study to create a variant framework through which news discourse on Jane-Finch, a low-income community in Toronto, Canada is filtered. The approaches of CDA, framing and branding intersect around language and power and are therefore beneficial for combining in any analysis that seeks to identify the socio-cultural influences on the text, such as the reiteration of dominant discourses within the text. This research examined news articles selected from The Toronto Star and the Globe and Mail, two mainstream Canadian newspapers with the highest circulation. The news articles show that Jane-Finch is portrayed in a negative and stereotypical way by both newspapers. These findings support the view that news discourse is as ideologically-bound as other forms of discourse, despite claims to its objectivity. As a consequence of being ideologically-bound, a fundamental attribution error is enacted in news coverage on Jane-Finch, as coverage repeatedly attributed the problems in Jane-Finch to race and immigrants (internal factors) and ignored the more substantive contributing factors of discrimination, structural constraints, poverty and joblessness (external structural factors). More generally, the analysis shows that news about Jane-Finch tends to be negative and therefore obscures any positive developments in the community. Sustained repetition of the same news stories brands the community with a negative reputation and promotes a false stereotype of its residents. Not only is news capable of agenda-setting (bringing certain issues to the forefront), but in repeatedly showcasing issues the same way all the time, a 'branding effect' (similar to the process in corporate branding) is enacted. A 'domino effect' results in that negative branding of Jane-Finch affects property values, prevents educational and job opportunities for its residents and reduces economic development of the area. Ultimately, this can cause misrecognition of the 'real' problems affecting the community, preventing the development of effective community and policy responses to these issues. The thesis not only contributes knowledge in the area of branding and the news but also contributes in the area of policy-making related to low-income communities and the poor. Policy-makers need to address external structural factors affecting these areas and pay less attention to the 'sensational' areas showcased by the media. For example, because of the focus on crime in the news media, policymakers may think more stringent crime laws are needed when if other issues, such as ensuring jobs for the young, are addressed, youth crime would lessen.
Decentralized Picosecond Synchronization for Distributed Wireless Systems
Creators: name: Shandi, Naim
name: Merlo, Jason M.
name: Nanzer, Jeffrey A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We demonstrate a wireless, decentralized time-alignment method for distributed antenna arrays and distributed wireless networks that achieves picosecond-level synchronization. Distributed antenna arrays consist of spatially separated antennas that coordinate their functionality at the wavelength level to achieve coherent operations such as distributed beamforming. Accurate time alignment (synchronization) of the local clocks on each node in the array is necessary to support accurate time-delay beamforming of modulated signals. In this work we combine a consensus averaging algorithm and a high-accuracy wireless two-way time transfer method to achieve decentralized time alignment, correcting for the time-varying bias of the clocks in a method that has no central node. Internode time transfer is based on a spectrally-sparse, two-tone signal achieving near-optimal time delay accuracy. We experimentally demonstrate the approach in a wireless four-node software-defined radio system, with various network connectivity graphs. We show that within 20 iterations all the nodes achieve convergence within a bias of less than 12 ps and a standard deviation of less than 3 ps. The performance is evaluated versus the bandwidth of the two-tone waveform, which impacts the synchronization error, and versus the signal-to-noise ratio.
description: 13 pages, 23 figures, "This work has been submitted to the IEEE for possible publication."
Marketing Margins for Fruits and Vegetables
Creators: name: Edman, Victor G.
name: Edman, Victor G.
Publisher: name: Unknown
Year: 1963
Subjects: subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Marketing
subject: FOS: Economics and business

description: Marketing margins, retail prices, and farm values for fresh fruits and vegetables each increased 3 percent from 1961 to 1962. The farmer's share of the retail price remained unchanged at 34 percent. Margins and prices for processed fruits and vegetables decreased from 1961 to 1962. The farm value was down 12 percent, the retail price 4 percent, and the marketing margin 1 percent. The farmer's share of the retail cost dropped from 23 to 21 percent. In 1961-62, the margin for Washington Delicious apples sold in Chicago was up sharply from the preceding season, while for those sold in New York City the margin decreased substantially. However, in each market the margin was larger than the average of the last 6 seasons. Margins for California Valencia, California Navel and Florida oranges sold in Chicago in 1961-62 were all larger than in the preceding season; retail prices were higher for the California types but lower for Florida oranges. Margins for Florida grapefruit sold in Detroit and Pittsburgh during 1960-61 moved in almost exact proportion to the changes in the retail price, leaving the percentage margin essentially unchanged. The margins for lemons in 1960-61 increased for the second consecutive season, both in dollars and as a percentage of the retail price.
description: Article reprinted from The Marketing and Transportation Situation February 1963
Effect of Ultrasonication Duration on Colloidal Structure and Viscosity of Alumina–Water Nanofluid
Creators: name: Islam, Mohammed Mahbubul
Publisher: name: figshare
Year: 2017
Subjects: subject: 30304 Physical Chemistry of Materials
subject: FOS: Chemical sciences
subject: 30603 Colloid and Surface Chemistry
subject: 100712 Nanoscale Characterisation
subject: FOS: Nanotechnology
subject: 90408 Rheology
subject: FOS: Chemical engineering
subject: 91504 Fluidisation and Fluid Mechanics
subject: FOS: Other engineering and technologies
subject: 20303 Fluid Physics
subject: FOS: Physical sciences

description: Nanofluids are promising fluids for heat-transfer applications. Low stability and high viscosity are two important drawbacks for practical applications of nanofluids. The aggregation and sedimentation of nanoparticles are related to the colloidal structure of nanofluids, which directly affects the stability and viscosity. An ultrasonic homogenizer can break the aggregation of particles. The aim of this work was to study the effect of the duration of ultrasonic treatment on colloidal structure, including the stability and temperature-dependent viscosity of a nanofluid. Specifically, a 0.5 vol % Al2O3−water nanofluid was prepared usingan ultrasonic homogenizer for various durations from 0 to 180 min. The microstructure, colloid and particle sizes, precipitation, and zeta (ζ) potential were analyzed to investigate the aggregation and sedimentation of the nanofluid. The viscosities of nanofluids subjected to ultrasonic treatment for different durations were also measured at different temperatures from 15 to 45°C. Better particle dispersion, lower particle sizes, smaller colloid sizes, less precipitation, and higher ζ potentials were observed with increasing sonication time. The viscosity of Al2O3−water nanofluid was found to increase with the sonication time up to 60 min and then subsequently decreased. In addition, the viscosity decreased with increasing temperature. The research concluded that more stabler and lower-viscosity nanofluids can be obtained by applying ultrasonic treatment for durations of 90 min or longer.
Backdoor attacks against deep reinforcement learning based traffic signal control systems
Creators: name: Zhang, Heng
name: Gu, Jun
name: Zhang, Zhikun
name: Du, Linkang
name: Zhang, Yongmin
name: Ren, Yan
name: Zhang, Jian
name: Li, Hongran
Publisher: name: CISPA
Year: 2024

description: To improve the efficiency of the traffic signal control and alleviate traffic congestion, many researchers focus on applying deep reinforcement learning (DRL) for traffic signal control systems (TSCS). The TSCS consider all the vehicles’ waiting time around the intersection and decrease them so as to alleviate the traffic congestion. However, it has been confirmed that the DRL model is vulnerable to backdoor attacks. In this paper, we propose the first backdoor attack against DRL based TSCS. We define a special drive behavior as malicious input (called trigger). Once the trigger is activated via an attacker, the TSCS will only take into waiting time for the attacker’s vehicle at the intersection. Our empirical experiments show that our proposed backdoor attacks are effective with negligible impact on TSCS’s normal operation.
Electric-field-tuned binding energies of trions in silicene, germanene, and stanene monolayers
Creators: name: Kezerashvili, Roman Ya.
name: Tsiklauri, Shalva M.
name: Spiridonova, Anastasia
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We predict the formation of intravalley controllable trions in buckled two-dimensional (2D) materials such as silicene, germanene, and stanene monolayers in an external electric field. Performing a study within the framework of a nonrelativistic potential model using the method of hyperspherical harmonics (HH), the three-body Schrödinger equation is solved with the Rytova-Keldysh potential by expanding the wave functions of a trion in terms of the HH. Then, we numerically solve a resultant system of coupled differential equations. The ground state energies of intravalley trions controlled by the external electric field are presented. The dependencies of the binding energy (BE) of trions in silicene, germanene, and stanene as a function of the electric field are shown to be qualitatively similar. BEs of trions formed by $A$ and $B$ excitons have a non-negligible difference that increases slightly as the electric field increases. We demonstrate that trion BEs can be controlled by the external electric field.
description: 9 pages, 3 figures
Exploring Key Factors for Long-Term Vessel Incident Risk Prediction
Creators: name: Chen, Tianyi
name: Wang, Hua
name: Cai, Yutong
name: Liang, Maohan
name: Meng, Qiang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Factor analysis acts a pivotal role in enhancing maritime safety. Most previous studies conduct factor analysis within the framework of incident-related label prediction, where the developed models can be categorized into short-term and long-term prediction models. The long-term models offer a more strategic approach, enabling more proactive risk management, compared to the short-term ones. Nevertheless, few studies have devoted to rigorously identifying the key factors for the long-term prediction and undertaking comprehensive factor analysis. Hence, this study aims to delve into the key factors for predicting the incident risk levels in the subsequent year given a specific datestamp. The majority of candidate factors potentially contributing to the incident risk are collected from vessels' historical safety performance data spanning up to five years. An improved embedded feature selection, which integrates Random Forest classifier with a feature filtering process is proposed to identify key risk-contributing factors from the candidate pool. The results demonstrate superior performance of the proposed method in incident prediction and factor interpretability. Comprehensive analysis is conducted upon the key factors, which could help maritime stakeholders formulate management strategies for incident prevenion.
PIDs in the Natural Sciences
Creators: name: Schörner, Thomas
name: Barty, Anton
name: Demleitner, Markus
name: Enke, Harry
name: Koepler, Oliver
name: Köhler, Martin
name: Murphy, Bridget
name: Schimmler, Sonja
name: Stein, Lisa-Marie
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: subject: 050

description: 1st Conference on Research Data Infrastructure (CoRDI) - Connecting Communities / Poster presentations II (Call for Papers), CoRDI, Heidelberg, Germany, 12 Sep 2023 - 14 Sep 2023; (2023). doi:10.52825/cordi.v1i.361
description: We report on ongoing discussions and plans of NFDI consortia in physics and rel-tatednatural sciences with respect to (persistent) identifiers.
Supplementary Information from State-dependent driving: a route to non-equilibrium stationary states
Creators: name: Das, Soumen
name: Ghosh, Shankar
name: Gupta, Shamik
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Mechanics
subject: 20304 Thermodynamics and Statistical Physics
subject: FOS: Mechanical engineering

description: Comparison between experimental and numerical results across different pairs of materials.
Discontinuities of banana integrals in dispersion relation representation
Creators: name: Chen, Xu-Liang
name: Yang, Peng-Fei
name: Chen, Wei
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the discontinuities of banana integrals using the dispersion relation iteratively. We find a series of identities between the parameterized discontinuities of banana integrals (p-DOBIs). Similar to elliptic integrals, these identities enable the reduction of various p-DOBIs to be a linear combination of some fundamental ones. We present a practical application of p-DOBIs for deriving Picard-Fuchs operator. Then we establish the expression of generalized dispersion relation, which enables us to obtain the dispersion relation representation of arbitrary banana integrals. Moreover, we propose a hypothesis for generalized dispersion relation and p-DOBIs, which provides a simple way to calculate the discontinuities and transform dispersion relation representation to p-DOBIs.
description: 7 pages, 1 figure. Published in Chinese Physics Letters
Autonomy and Relatedness During the Preschool Period: An Examination of Parent-Child Interactions Within and Across Cultures
Creators: name: Quan, Jeffry
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2020
Subjects: parent-child interactions
preschool children
cross-cultural variation
mothers
fathers
autonomy
relatedness
attachment
socio-emotional problems
socialization
Canada
Singapore

description: This thesis explores parents’ promotion of both autonomy and relatedness in their interactions with their preschool children. In particular, it examines these behaviours in contexts beyond those that have been the traditional focus of research to date: mothers living in the Western world. To achieve this, a novel coding system was developed for observations of parent-child interactions: the Cross-cultural Observations of Parents Interacting with Children (COPI-C) Coding System. Using the COPI-C, the first study of this thesis explores mothers’ autonomy- and relatedness-promoting behaviours from a cross-cultural perspective by comparing samples of Canadian mothers and Singaporean mothers. In contrast, the second study explores autonomy- and relatedness-promoting behaviours from an intra-cultural perspective by comparing samples of Canadian mothers and fathers from the same families. Importantly, in addition to describing cross-sample differences in autonomy- and relatedness-promoting behaviours, both studies also examine the theoretical correlates of these behaviours (i.e., socialization goals, the child-parent attachment relationship, children’s socio-emotional functioning) and how context (either culture or gender) might moderate these associations. In Study 1, results identified several differences between Canadian and Singaporean mothers, with Canadian mothers generally displaying greater autonomy-promoting behaviours and Singaporean mothers generally displaying greater relatedness-promoting behaviours. Singaporean mothers tended to endorse greater interdependent socialization goals, but cross-sample differences in socialization goals did not account for cross-sample differences in maternal autonomy- and relatedness-promoting behaviours. Still, several autonomy- and relatedness-promoting behaviours showed differential associations with child outcomes across cultural contexts: some behaviours predicted positive child outcomes in one context, but not the other. In Study 2, results identified several differences between Canadian mothers’ and fathers’ autonomy- and relatedness-promoting behaviours. Furthermore, parents’ interdependent socialization goals varied as a function of an interaction between parent gender and child gender. Together, the studies presented herein highlight the importance of considering the socio-cultural context in understanding parent-child interactions and their developmental correlates.
Integrated diode lasers for the generation of sub-GHz repetition rate frequency combs
Creators: name: Memon, Anzal
name: van Rees, Albert
name: Mak, Jesse
name: Fan, Youwen
name: van der Slot, Peter
name: Bastiaens, Hubertus
name: Boller, Klaus-J
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We demonstrate absorber-free passive and hybrid mode-locking at sub-GHz repetition rates using a hybrid integrated extended cavity diode laser around 1550 nm. The laser is based on InP as gain medium and a long Si$_3$N$_4$ feedback circuit, with three highly frequency selective microring resonators. The feedback resonators not only increases the cavity length up to 0.6 m to achieve sub-GHz repetition rates but also serve as a dispersive narrowband mirror for sharp spectral filtering, which enables Fourier domain mode-locking. We observe passive mode-locking with repetition rates below 500 MHz, with $\approx$ 15 comb lines at around 0.2 mW total power. To stabilize the repetition rate, hybrid mode-locking is demonstrated by weak RF modulation of the diode current at frequencies around 500 MHz. The RF injection reduces the Lorentzian linewidth component from 8.9 kHz to a detection limited value around 300 mHz. To measure the locking range of the repetition rate, the injected RF frequency is tuned with regard to the passive mode-locking frequency and the injected RF power is varied. The locking range increases approximately as a square-root function of the injected RF power. At 1 mW injection a wide locking range of about 80 MHz is obtained. We observe the laser maintaining stable mode-locking also when the DC diode pump current is increased from 40 mA to 190 mA, provided that the cavity length is maintained constant with thermo-refractive tuning.
description: This manuscript is under review for publication with optics express
Supplementary material for "Molecular dynamics simulations of the machining of oxidized and deoxidized titanium work pieces"
Creators: name: LUU, Thien
Publisher: name: Zenodo
Year: 2024
Subjects: Molecular dynamics simulations
Nanocutting
Oxidation
Titanium
Oxidation Free

description: Advances in the machining of titanium work pieces are of particular interest to areas such as the aerospace and naval industry. However, titanium is known to be a difficult-to-machine material. Recent studies suggest that the presence of oxygen from ambient air has a significant influence on its wear mechanism. Removing oxygen from the system reduces tool wear and therefore improves the surface finish of the tool in the long term. However, the exact mechanism of wear caused by oxygen is still up to debate. In this work, we study molecular dynamics simulations of the cutting process of single crystalline hcp titanium on the (0001) plane with and without an oxide layer. Reference simulations with pure titanium of different crystal sizes are performed in order to reveal size effects. We find that the oxygen layer behaves very brittle compared to the bulk crystal material and influences the chip formation on the nanoscale. Instead of forming a smooth chip, as for pure titanium, the simulation with an oxide layer shows no chip formation at all in the observed time scale. The layer breaks and locally induces high temperatures of 1700 K in the material. These high temperatures could lead to enhanced interdiffusion of work piece and tool material and could therefore amplify the predominant tool wear mechanism.
A Hierarchy of Monitoring Properties for Autonomous Systems
Creators: name: Schirmer, Sebastian
name: Torens, Christoph
name: Dauer, Johann C
name: Baumeister, Jan
name: Finkbeiner, Bernd
name: Rozier, Kristin Y
Publisher: name: CISPA
Year: 2024

description: Monitoring capabilities play a central role in mitigating safety risks of current, but especially future autonomous aircraft systems. These future systems are likely to include complex components such as neural networks for environment perception, which pose a challenge for current verification approaches; they are considered as black-box components. To assure that these black-boxes comply to their specification, they are typically monitored to detect violations during execution in respect to their input and output behavior. Such behavioral properties often include more complex aspects such as temporal or spatial notions. Besides monitoring their behavior, the outputs can also be compared to data from other assured sensors or components of the aircraft, making monitoring an even more integral part of the system, which ideally has access to all available resources to assess the overall health of the operation. Current approaches using handwritten code for monitoring functions run the risk of not being able to keep up with these challenges. Therefore, in this paper, we present a hierarchy of monitoring properties that provides a perspective for overall health. We also present a categorization of monitoring properties and show how different monitoring specification languages can be used for formalization. These monitoring languages represent a higher abstraction of general-purpose code and are therefore more compact and easier for a user to write and read. They improve the maintainability of monitoring properties that is required to handle the increased complexity of future autonomous aircraft systems.
filtered_gene_bc_matrices.tar.gz
Creators: name: Hengxing Ba
Publisher: name: figshare
Year: 2018
Subjects: subject: 60802 Animal Cell and Molecular Biology
subject: FOS: Biological sciences
subject: 60602 Animal Physiology - Cell
subject: 60408 Genomics
subject: Stem Cells
subject: Cell Biology

description: A comprehensive transcriptome gene-barcodes matrix dataset based on 10x genomics platform at the single-cell level from antler stem cells. These data were generated from the Cell Ranger pipeline version 1.3.1.
Shotluck Holmes: A Family of Efficient Small-Scale Large Language Vision Models For Video Captioning and Summarization
Creators: name: Luo, Richard
name: Peng, Austin
name: Vasudev, Adithya
name: Jain, Rishabh
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Video is an increasingly prominent and information-dense medium, yet it poses substantial challenges for language models. A typical video consists of a sequence of shorter segments, or shots, that collectively form a coherent narrative. Each shot is analogous to a word in a sentence where multiple data streams of information (such as visual and auditory data) must be processed simultaneously. Comprehension of the entire video requires not only understanding the visual-audio information of each shot but also requires that the model links the ideas between each shot to generate a larger, all-encompassing story. Despite significant progress in the field, current works often overlook videos' more granular shot-by-shot semantic information. In this project, we propose a family of efficient large language vision models (LLVMs) to boost video summarization and captioning called Shotluck Holmes. By leveraging better pretraining and data collection strategies, we extend the abilities of existing small LLVMs from being able to understand a picture to being able to understand a sequence of frames. Specifically, we show that Shotluck Holmes achieves better performance than state-of-the-art results on the Shot2Story video captioning and summary task with significantly smaller and more computationally efficient models.
The neglected role of limiting factors in large-scale abundance patterns
Creators: name: Anonymous
Publisher: name: Zenodo
Year: 2024
Subjects: Law of the Minimum; quantile regression; species distribution; trees; birds; abundance-environment relationships

description: This repository contains the codes and the data used in the manuscript "The neglected role of limiting factors in large-scale abundance patterns"

Content:

1-4: Results of quantile regression models and additional figures of the manuscript 

5-6: Method to detect polygon-shaped point clouds in species abundance-environment relationships. An example database is included.