cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The simulation of the activity dependent neural network growth
Creators: name: Gafarov, F.
name: Khusnutdinov, N.
name: Galimyanov, F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: It is currently accepted that cortical maps are dynamic constructions that are altered in response to external input. Experience-dependent structural changes in cortical microcurcuts lead to changes of activity, i.e. to changes in information encoded. Specific patterns of external stimulation can lead to creation of new synaptic connections between neurons. The calcium influxes controlled by neuronal activity regulate the processes of neurotrophic factors released by neurons, growth cones movement and synapse differentiation in developing neural systems. We propose a model for description and investigation of the activity dependent development of neural networks. The dynamics of the network parameters (activity, diffusion of axon guidance chemicals, growth cone position) is described by a closed set of differential equations. The model presented here describes the development of neural networks under the assumption of activity dependent axon guidance molecules. Numerical simulation shows that morpholess neurons compromise the development of cortical connectivity.
description: 10 pages, 2 figures
Healthfulness of Food Purchases and Food Access in France
Creators: name: Fadhuile, Adelaide
name: Caillavet, France
name: Kyureghian, Gayaneh
name: Nayga, Rodolfo M.
name: Fadhuile, Adelaide
name: Caillavet, France
name: Kyureghian, Gayaneh
name: Nayga, Rodolfo M.
Publisher: name: Unknown
Year: 2021
Subjects: Food Consumption/Nutrition/Food Safety
Health Economics and Policy

description: Session ID 4794, Paper# 19874
A fully passive transmitter for decoy-state quantum key distribution
Creators: name: Zapatero, Víctor
name: Wang, Wenyuan
name: Curty, Marcos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A passive quantum key distribution (QKD) transmitter generates the quantum states prescribed by a QKD protocol at random, combining a fixed quantum mechanism and a post-selection step. By avoiding the use of active optical modulators externally driven by random number generators, passive QKD transmitters offer immunity to modulator side channels and potentially enable higher frequencies of operation. Recently, the first linear optics setup suitable for passive decoy-state QKD has been proposed. In this work, we simplify the prototype and adopt sharply different approaches for BB84 polarization encoding and decoy-state generation. On top of it, we elaborate a tight custom-made security analysis surpassing an unnecessary assumption and a post-selection step that are central to the former proposal.
CI2023 Reproducibility Challenge - Talk with the Expert | Reproducible Publications: The effectiveness of Open Science badges, Lincoln Colling
Creators: name: Colling, Lincoln
Publisher: name: Zenodo
Year: 2023
Subjects: reproducibility challenge
environmental data science
hackathon
open science badges
psychological science

description: On 15 May, 09:00-09:30 London time (UTC+1): the Talk with the Expert took place on "The effectiveness of Open Science badges" by Lincoln Colling, lecturer in the School of Psychology at the University of Sussex and a fellow with the Software Sustainability Institute. Linconln gave high level talk on the findings from a recent study investigating the computational reproducibility of articles published in an issue of Psychological Science with an Open Data badge. The study found that only one in 14 articles were fully computationally reproducible, suggesting that researchers should be encouraged to adhere to a higher standard of reproducibility. This event was co-hosted by EDS book - a computational notebook community for Open Environmental Science, Climate Informatics - an open community interested in research combining climate science with approaches from statistics, machine learning and data mining and Environmental Data Science Journal - part of Cambridge University Press and Assessment designed to highlight the potential of artificial intelligence and data science to enhance our understanding of the environment, and to address climate change. Talk with the Expert features advances in open and reproducible research as part of the CIimate Informatics 2023 Reproducibility Challenge.
Reply to comment by Poole et al. on a tropical NAT-like belt observed from space
Creators: name: Noel, Vincent
name: Chepfer, Hélène
Publisher: name: arXiv
Year: 2009
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: In their comment, Poole et al. (2009) aim to show it is highly improbable that the observations described in Chepfer and Noel (2009), and described as "NAT-like" therein, are produced by Nitric Acid Trihydrate (NAT) particles. In this reply, we attempt to show why there is, in our opinion, too little evidence to reject this interpretation right away.
Economic Analyses of Micro-Irrigation Adoption Scheme “per Drop More Crop” (PDMC): A Case of Sugarcane, Banana and Cotton Farmers in Maharashtra (India)
Creators: name: Miglani, Varun
name: Shroff, Sangeeta
name: Miglani, Varun
name: Shroff, Sangeeta
Publisher: name: Unknown
Year: 2021
Subjects: Environmental Economics and Policy
Crop Production/Industries

description: Session ID 4841, Paper# 19886
Advances in device-independent quantum key distribution
Creators: name: Zapatero, Víctor
name: van Leent, Tim
name: Arnon-Friedman, Rotem
name: Liu, Wen-Zhao
name: Zhang, Qiang
name: Weinfurter, Harald
name: Curty, Marcos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Device-independent quantum key distribution (DI-QKD) provides the gold standard for secure key exchange. Not only it allows for information-theoretic security based on quantum mechanics, but it relaxes the need to physically model the devices, hence fundamentally ruling out many quantum hacking threats to which non-DI QKD systems are vulnerable. In practice though, DI-QKD is very challenging. It relies on the loophole-free violation of a Bell inequality, a task that requires high quality entanglement to be distributed between distant parties and close to perfect quantum measurements, which is hardly achievable with current technology. Notwithstanding, recent theoretical and experimental efforts have led to the first proof-of-principle DI-QKD implementations. In this article, we review the state-of-the-art of DI-QKD by highlighting its main theoretical and experimental achievements, discussing the recent proof-of-principle demonstrations, and emphasizing the existing challenges in the field.
$ϕ$ Production in In-In Collisions at 158 AGeV
Creators: name: The NA60 Collaboration
name: Arnaldi, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The NA60 experiment has measured muon pair production in In-In collisions at 158 AGeV at the CERN SPS. This paper presents a high statistics measurement of $ϕ\toμμ$ meson production. Differential spectra, yields, mass and width are measured as a function of centrality and compared to previous measurements in other colliding systems at the same energy. The width of the rapidity distribution is found to be constant as a function of centrality, compatible with previous results. The decay muon polar angle distribution is measured in several reference frames. No evidence of polarization is found as a function of transverse momentum and centrality. The analysis of the $p_{T}$ spectra shows that the $ϕ$ has a small radial flow, implying a weak coupling to the medium. The $T_{eff}$ parameter measured in In-In collisions suggests that the high value observed in Pb-Pb in the kaon channel is difficult to reconcile with radial flow alone. The absolute yield is compared to results in Pb-Pb collisions: though significantly smaller than measured by NA50 in the muon channel, it is found to exceed the NA49 and CERES data in the kaon channel at any centrality. The mass and width are found to be compatible with the PDG values at any centrality and at any $p_{T}$: no evidence for in-medium modifications is observed.
description: 18 pages, 18 figures, accepted for publication in EPJ C
Research on the Effect of FDI on the Domestic Value-Added of Food Processing and Manufacturing Enterprises' Exports and Its Mechanism
Creators: name: Zhang, Xiaoge
name: Zhang, Yvette
name: Lin, Benxi
name: Jin, Shaosheng
name: Zhang, Xiaoge
name: Zhang, Yvette
name: Lin, Benxi
name: Jin, Shaosheng
Publisher: name: Unknown
Year: 2021
Subjects: International Relations/Trade
Agribusiness

description: Session ID 4718, Paper# 19887
The Contribution of Smallholders´ Livelihood Activities on Income Inequality and Poverty: Case Study from Rural Tanzania
Creators: name: Mager, Gregor
name: Faße, Anja
name: Mager, Gregor
name: Faße, Anja
Publisher: name: Unknown
Year: 2021
Subjects: Food Security and Poverty
Labor and Human Capital

description: Session ID 4779, Paper# 19888
Profit Efficiency of Cassava Production By Small Holder Farmers in Enugu State, Nigeria
Creators: name: Okorie, Oguejiofor
name: Umaru, Ibrahim
name: Obetta, Angela
name: Awoyelu, Festus
name: Okorie, Oguejiofor
name: Umaru, Ibrahim
name: Obetta, Angela
name: Awoyelu, Festus
Publisher: name: Unknown
Year: 2021
Subjects: Crop Production/Industries

description: Session ID 4852, Paper# 19890
Pesticide Handling and Human Health: Conventional and Organic Cotton Farming in Benin
Creators: name: Aihounton, Ghislain
name: Henningsen, Arne
name: Trifkovic, Neda
name: Aihounton, Ghislain
name: Henningsen, Arne
name: Trifkovic, Neda
Publisher: name: Unknown
Year: 2021
Subjects: Farm Management
Crop Production/Industries

description: Session ID 4816, Paper# 19892
Using Satellite Images to Measure Crop Productivity: Long-Term Impact Assessment of a Randomized Technology Adoption Program in the Dominican Republic
Creators: name: Salazar, Lina
name: Palacios, Ana
name: Selvaraj, Michael
name: Montenegro, Frank
name: Salazar, Lina
name: Palacios, Ana
name: Selvaraj, Michael
name: Montenegro, Frank
Publisher: name: Unknown
Year: 2021
Subjects: Research and Development/Tech Change/Emerging Technologies
Crop Production/Industries

description: Session ID 4712, Paper# 19897
3D Single-pixel imaging with active sampling patterns and learning based reconstruction
Creators: name: Ma, Xinyue
name: Wang, Chenxing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Signal Processing (eess.SP)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Single-pixel imaging (SPI) is significant for applications constrained by transmission bandwidth or lighting band, where 3D SPI can be further realized through capturing signals carrying depth. Sampling strategy and reconstruction algorithm are the key issues of SPI. Traditionally, random patterns are often adopted for sampling, but this blindly passive strategy requires a high sampling rate, and even so, it is difficult to develop a reconstruction algorithm that can maintain higher accuracy and robustness. In this paper, an active strategy is proposed to perform sampling with targeted scanning by designed patterns, from which the spatial information can be easily reordered well. Then, deep learning methods are introduced further to achieve 3D reconstruction, and the ability of deep learning to reconstruct desired information under low sampling rates are analyzed. Abundant experiments verify that our method improves the precision of SPI even if the sampling rate is very low, which has the potential to be extended flexibly in similar systems according to practical needs.
Trends in Female Labour Absorption in Rice Cultivation: Evidence from India
Creators: name: Singaraju, Niyati
name: Bora, Kaushik
name: Singaraju, Niyati
name: Bora, Kaushik
Publisher: name: Unknown
Year: 2021
Subjects: Labor and Human Capital
Crop Production/Industries

description: Session ID 4733, Paper# 19905
Microbial manipulation of the brain and reproductive system in inflammatory bowel disease
Creators: name: Cotton, Sophie Anne
Publisher: name: University of British Columbia
Year: 2024

description: Crohn’s disease and ulcerative colitis, collectively termed inflammatory bowel disease (IBD), are chronic and incurable diseases of the gastrointestinal tract. Beyond the gastrointestinal tract, IBD patients exhibit high rates of hormonally driven sexual, reproductive, and psychiatric disorders. For instance, delayed puberty is reported in up to 85% of pediatric IBD patients, and sexual dysfunction is reported in up to 60% of adult female patients and up to 94% of adult male patients. Further, psychiatric illness is two to three times as prevalent in IBD patients compared to the general population. Previously, systemic sex steroid levels were thought to be exclusively controlled by the hypothalamic-pituitary-gonadal axis. However, recent research has identified gut microbes capable of degrading androgens and reactivating estrogens in a clinically significant manner. Based on these findings, we proposed that the gut microbiota could play a role in driving the high prevalence of neuroendocrine comorbidities observed in IBD. Specifically, we hypothesized that IBD-like alterations to the murine gut would induce sexual, reproductive, and psychiatric effects like those seen in IBD patients. To test this hypothesis, we used the well-known dextran sodium sulfate (DSS) model of IBD to disrupt the murine gut microbiota and induce inflammation at specific developmental time points, and measured the effect on the gut, systemic sex steroid levels, reproductive development, brain cell morphology and behavior. Confirming our hypothesis, we found that DSS induced inflammation reshapes the composition of the gut microbiota, compromises the integrity of the gut epithelium, impedes the development of the seminal vesicles, and causes changes in sex-specific behavior. In contrast, DSS did not appear to disrupt systemic sex steroid levels, affect the timing of pubertal onset, cause damage to the reproductive organs or alter mating behavior. Taken together, these results suggest that DSS inflammation selectively impacts certain aspects of the gut-endocrine-brain axis in IBD while leaving others unaffected. This points to the need for further research that can take a multi-system approach to investigating the complex and nuanced interplay between the gut microbiota, immune system, endocrine system, reproductive organs, brain and behavior in IBD.
APTx: better activation function than MISH, SWISH, and ReLU's variants used in deep learning
Creators: name: Kumar, Ravin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Activation Functions introduce non-linearity in the deep neural networks. This nonlinearity helps the neural networks learn faster and efficiently from the dataset. In deep learning, many activation functions are developed and used based on the type of problem statement. ReLU's variants, SWISH, and MISH are goto activation functions. MISH function is considered having similar or even better performance than SWISH, and much better than ReLU. In this paper, we propose an activation function named APTx which behaves similar to MISH, but requires lesser mathematical operations to compute. The lesser computational requirements of APTx does speed up the model training, and thus also reduces the hardware requirement for the deep learning model. Source code: https://github.com/mr-ravin/aptx_activation
description: 8 pages, 6 figures
Oscillating phantom in $F(R)$ gravity
Creators: name: Bamba, Kazuharu
name: Geng, Chao-Qiang
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the oscillating effective equation of state (EoS) of the universe around the phantom divide in the framework of $F(R)$ gravity. We illustrate the behavior of $F(R)$ with realizing multiple crossings of the phantom divide.
description: 11 pages, 6 figures, accepted in Prog. Theor. Phys
A stochastic integer programming approach to reserve staff scheduling with preferences
Creators: name: Perreault-Lafleur, Carl
name: Carvalho, Margarida
name: Desaulniers, Guy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Nowadays, reaching a high level of employee satisfaction in efficient schedules is an important and difficult task faced by companies. We tackle a new variant of the personnel scheduling problem under unknown demand by considering employee satisfaction via endogenous uncertainty depending on the combination of their preferred and received schedules. We address this problem in the context of reserve staff scheduling, an unstudied operational problem from the transit industry. To handle the challenges brought by the two uncertainty sources, regular employee and reserve employee absences, we formulate this problem as a two-stage stochastic integer program with mixed-integer recourse. The first-stage decisions consist in finding the days off of the reserve employees. After the unknown regular employee absences are revealed, the second-stage decisions are to schedule the reserve staff duties. We incorporate reserve employees' days-off preferences into the model to examine how employee satisfaction may affect their own absence rates.
description: 25 pages, 4 figures, International Transactions in Operational Research (2023)
Theoretical analysis of mechanical displacement measurement using a multiple cavity mode transducer
Creators: name: Dobrindt, J. M.
name: Kippenberg, T. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an optomechanical displacement transducer, that relies on three cavity modes parametrically coupled to a mechanical oscillator and whose frequency spacing matches the mechanical resonance frequency. The additional resonances allow to reach the standard quantum limit at substantially lower input power (compared to the case of only one resonance), as both, sensitivity and quantum backaction are enhanced. Furthermore, it is shown that in the case of multiple cavity modes, coupling between the modes is induced via reservoir interaction, e.g., enabling quantum backaction noise cancellation. Experimental implementation of the schemes is discussed in both the optical and microwave domain.
description: 5 pages, 3 figures. Revised and amended version
Nutrition-Sensitive Food Environments: Unpacking State, Market and Civil Society Failures to Catalyze a Food System Transformation
Creators: name: Asante-Addo, Collins
name: Andam, Kwaw
name: Asante, Felix
name: Asante-Addo, Collins
name: Andam, Kwaw
name: Asante, Felix
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business

description: Session ID 4794, Paper# 19907
A new shape optimization approach for fracture propagation
Creators: name: Suchan, Tim
name: Welker, Kathrin
name: Wollner, Winnifried
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Within this work, we present a novel approach to fracture simulations based on shape optimization techniques. Contrary to widely-used phase-field approaches in literature the proposed method does not require a specified 'length-scale' parameter defining the diffused interface region of the phase-field. We provide the formulation and discuss the used solution approach. We conclude with some numerical comparisons with well-established single-edge notch tension and shear tests.
description: 10 pages, 6 figures, Accepted for publication in: Proceedings in Applied Mathematics and Mechanics 2022
A Criterion for the Critical Number of Fermions and Chiral Symmetry Breaking in Anisotropic QED(2+1)
Creators: name: Concha, A.
name: Stanev, V.
name: Tesanovic, Z.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: By analyzing the strength of a photon-fermion coupling using basic scattering processes we calculate the effect of a velocity anisotropy on the critical number of fermions at which mass is dynamically generated in planar QED. This gives a quantitative criterion which can be used to locate a quantum critical point at which fermions are gapped and confined out of the physical spectrum in a phase diagram of various condensed matter systems. We also discuss the mechanism of relativity restoration within the symmetric, quantum-critical phase of the theory.
description: To appear in Physical Review B
Cash Transfers and Children’s Educational Outcomes in Rural China: Evidence from the New Rural Pension Scheme
Creators: name: Zheng, Xiaodong
name: Shangguan, Shuangyue
name: Shen, Zheng
name: Fang, Xiangming
name: Zheng, Xiaodong
name: Shangguan, Shuangyue
name: Shen, Zheng
name: Fang, Xiangming
Publisher: name: Unknown
Year: 2021
Subjects: Political Economy
Food Security and Poverty

description: Session ID 4773, Paper# 19910
Does Village Debt Has Positive Effect on Land Transfer? Evidence from County-Level Panel Data of Village Finance in Zhejiang Province
Creators: name: Zheng, Suwen
name: Ye, Chunhui
name: Zheng, Suwen
name: Ye, Chunhui
Publisher: name: Unknown
Year: 2021
Subjects: Land Economics/Use
Public Economics

description: Session ID 4772, Paper# 19923
Organic Farming and Food and Nutrition Security
Creators: name: Henningsen, Arne
name: Aihounton, Ghislain
name: Henningsen, Arne
name: Aihounton, Ghislain
Publisher: name: Unknown
Year: 2021
Subjects: Agribusiness
Food Security and Poverty

description: Session ID 4820, Paper# 19929
Production of jets at forward rapidities in hadronic collisions
Creators: name: Hautmann, F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss high-pT production processes at forward rapidities in hadron-hadron collisions, and describe recent results from using QCD high-energy factorization in forward jet production at the LHC.
description: 8 pages. Latex. Proceedings of La Thuile 2009
Betti Tate's thesis and the trace of perverse schobers
Creators: name: Gammage, Benjamin
name: Hilburn, Justin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Geometry (math.AG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: We propose a conjecture on the categorical trace of the 2-category of perverse schobers (expected to model the Fukaya-Fueter 2-category of a holomorphic symplectic space). By proving a Betti geometric version of Tate's thesis, and combining it with our previous 3d mirror symmetry equivalence and the Ben-Zvi--Nadler--Preygel result on spectral traces, we are able to establish our conjecture in the simplest interesting case.
description: 12 pages. Final version, to appear in C. R. Math
title: Tatort Gartenlaube. Das Familienblatt als Ort des Wissens über Verbrechen.
Creators: name: Menzel, Julia
Publisher: name: University of Bayreuth
Year: 2020
Subjects: subject: Illustrierte Zeitschriften
subject: Kriminalliteratur
subject: 19. Jahrhundert
subject: 800
subject: 830

description: Die Arbeit versteht sich als Beitrag zur Erforschung des Funktionsspektrums eines Mediums, dessen spezifische Prozesse der Wissensgenerierung, -verarbeitung und -popularisierung nicht nur von Relevanz für die Kultur- und Wissensgeschichte des 19. Jahrhunderts sind, sondern als paradigmatisch für das Kommunikationsmedium Zeitschrift gelten können. Die Studie zeigt das am weitesten verbreitete deutschsprachige Familienblatt „Die Gartenlaube“ in seiner Struktur eines unterhaltenden Wissenskosmos´, der Hinweise zum Aufbau komplexerer Wissensnetze im eigenen Medium bereithält. Die dergestalt zu Tage tretende mediale Eigenlogik wird anhand des hier verhandelten Wissens über Verbrechen herausgearbeitet, das über metareflexive Schleifen und textuelle Vernetzungen zu Wissensformationen organisiert wird, die als konstitutiv für das Genre Kriminalerzählung, das Medium Zeitschrift und schließlich die Epoche des Realismus betrachtet werden können.
Sculpting the Vortex State of a Spinor BEC
Creators: name: Wright, K. C.
name: Leslie, L. S.
name: Hansen, A.
name: Bigelow, N. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We use Raman-detuned laser pulses to achieve spatially-varying control of the amplitude and phase of the spinor order parameter of a Bose-Einstein condensate. We present experimental results confirming precise radial and azimuthal control of amplitude and phase during the creation of vortex-antivortex superposition states.
description: 4 pages, 6 figures, accepted to PRL
Particle mixing, flavor condensate and dark energy
Creators: name: Blasone, Massimo
name: Capolupo, Antonio
name: Vitiello, Giuseppe
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The mixing of neutrinos and quarks generate a vacuum condensate that, at the present epoch, behaves as a cosmological constant. The value of the dark energy is constrained today by the very small breaking of the Lorentz invariance.
description: 3 pages, Presented at the Conference Neutrinos in Cosmology, Astro-, Particle- and Nuclear Physics, Erice School on Nuclear Physics, Erice, Italy, 16-24 Sep 2009
Material flow control in Remanufacturing Systems with random failures and variable processing times
Creators: name: Paschko, Felix
name: Knorn, Steffi
name: Krini, Abderrahim
name: Kemke, Markus
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: remanufacturing
subject: disassembly
subject: reinforcement learning
subject: value stream optimisation
subject: material flow control

description: Material flow control in remanufacturing is an important issue in the field of disassembly. This paper deals with the potential of autonomous material release decisions for remanufacturing systems to balance the uncertainties related to changing bottlenecks, to maximise throughput (WIP) and to minimise work-in-process (WIP). The goal is to achieve the highest possible throughput rate using real-time data while keeping costs to a minimum. Unlike traditional production systems, remanufacturing must consider and handle high uncertainties in the process. Up to now, classical methods such as CONWIP, Material Requirement Planning (MRP) and Kanban have been used for material flow control. However, these methods do not perform well in a system with high variation and uncertainties such as remanufacturing as they aim to find solutions for static environments. Crucial for optimal production in stochastic environments is finding the optimum pull or release rate which can vary over time in terms of maximising WIP and minimising WIP. We propose a deep reinforcement learning approach that acts on the environment and can adapt to changing conditions. This ensures that changing bottlenecks are taken care of and that there is a minimum WIP in the system.
Burnout "Estoy quemado". Herramienta preventiva para la Modalidad de Hogares Sustitutos ONG Crecer en Familia.
Creators: name: Gómez Contreras, Yolimar
name: Jaimes Urbina, Marlon Amilkar José Daniel
name: Parra Alba, Sandi Milena
name: Pérez Fernández, Blanca Johanna
Publisher: name: Zenodo
Year: 2022
Subjects: Síndrome de Burnout
Prevención
Sobre carga de trabajo
Clima organizacional
Subescalas
Trabajadores

description: Herramienta preventiva que lleva por nombre Burnout “estoy quemado” que fue construida a partir de las ideas de los colaboradores mediante la estrategia participativa brainstorming, logrando la participación activa de los colaboradores. La empresa debe adoptar un compromiso con la calidad de vida de sus trabajadores, obteniendo como resultados trabajadores con salud mental y física dispuestos a brindar un servicio de calidad. En cuanto a los colaboradores, fue de vital importancia su participación activa y expresión de ideas frente a la problemática central, manifestando sentir agrado por la escucha activa y la opinión para la construcción de la herramienta preventiva, donde se comprometen a participar mejorando su calidad de vida de forma integral.
Economic Analysis of 50% Non-Pollinating (FNP) Maize Varieties in Africa
Creators: name: Groote, Hugo De
name: Gharib, Mariam
name: Olsen, Michael
name: Groote, Hugo De
name: Gharib, Mariam
name: Olsen, Michael
Publisher: name: Unknown
Year: 2021
Subjects: Crop Production/Industries

description: Session ID 4853, Paper# 19948
Real space first-principles derived semiempirical pseudopotentials applied to tunneling magnetoresistance
Creators: name: Bevan, K. H.
name: Low, Tony
name: Guo, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this letter we present a real space density functional theory (DFT) localized basis set semi-empirical pseudopotential (SEP) approach. The method is applied to iron and magnesium oxide, where bulk SEP and local spin density approximation (LSDA) band structure calculations are shown to agree within approximately 0.1 eV. Subsequently we investigate the qualitative transferability of bulk derived SEPs to Fe/MgO/Fe tunnel junctions. We find that the SEP method is particularly well suited to address the tight binding transferability problem because the transferability error at the interface can be characterized not only in orbital space (via the interface local density of states) but also in real space (via the system potential). To achieve a quantitative parameterization, we introduce the notion of ghost semi-empirical pseudopotentials extracted from the first-principles calculated Fe/MgO bonding interface. Such interface corrections are shown to be particularly necessary for barrier widths in the range of 1 nm, where interface states on opposite sides of the barrier couple effectively and play a important role in the transmission characteristics. In general the results underscore the need for separate tight binding interface and bulk parameter sets when modeling conduction through thin heterojunctions on the nanoscale.
description: Submitted to Journal of Applied Physics
Floodplain organic-carbon dynamics modulated by meandering-channel migration : Vermilion River, Ontario, Canada
Creators: name: Barrera Mosquera, Diana Melissa
Publisher: name: University of British Columbia
Year: 2024

description: Floodplains are important organic carbon (OC) storage sites, and the evolution of watercourses modulates the transport, burial, and reworking of organic matter with cascading effects on watershed CO₂ budgets. The migration of adjacent channels can transport and bury OC that is then preserved in reducing environments. If OC is later exposed subaerially, it undergoes oxidation by reacting with oxygen – a reaction that de facto reverses photosynthesis and releases carbon dioxide (CO₂) back into the atmosphere. Imbalances between burial and oxidation can modulate watershed CO₂ budgets, such that it is important to establish models of OC sequestration and export by rivers. Meandering rivers have broadly predictable patterns of channel-planform evolution, providing an opportunity to assess floodplain OC budgets in relation to characteristic migration rates and floodplain ages. However, complexities associated with the natural geomorphic variability of meandering rivers has delayed the assessment of quantitative relationships between channel and OC dynamics. We illustrate evolving OC budgets in relation to channel migration in the Vermilion River (Ontario) located in the boreal forest of eastern North America. We combine photogrammetric analyses and dynamic time warping of channel centrelines with analysis of top-soil bulk density and OC. We found that variations of OC stock per unit surface area and soil development are modulated by meander migration through the development of typical boreal-forest vegetation successions. Furthermore, we explained the observed dependency of channel migration rate to integration timescale in terms of occasional occurrence of migration reversals, imprecisions in imagery’s georeferencing, and intermittent bankfull discharge stages. Our results provide a quantification of the degree to which meander migration controls soil development, forest age, and floodplain OC budgets over characteristic timescales related to meander growth and abandonment. We anticipate our study to inform wider applications to rivers in different biogeoclimatic zones – an approach that may in turn help carbon assessment in the context of changing climate or land use.
Neutrino Interactions Importance for Nuclear Physics
Creators: name: Amaro, J. E.
name: Maieron, C.
name: Valverde, M.
name: Nieves, J.
name: Barbaro, M. B.
name: Caballero, J. A.
name: Donnelly, T. W.
name: Udias, J. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We review the general interplay between Nuclear Physics and neutrino-nucleus cross sections at intermediate and high energies. The effects of different reaction mechanisms over the neutrino observables are illustrated with examples in calculations using several nuclear models and ingredients.
description: To appear in the proceedings of 6th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region (NuInt09), Sitges, Spain, 18 - 22 May 2009
Additional file 1 of Examining differences in exposure to digital marketing of unhealthy foods reported by Canadian children and adolescents in two policy environments
Creators: name: Vergeer, Laura
name: Soto, Carolina
name: Bagnato, Mariangela
name: Pauzé, Elise
name: Amson, Ashley
name: Ramsay, Tim
name: Olstad, Dana Lee
name: Welch, Vivian
name: Potvin Kent, Monique
Publisher: name: figshare
Year: 2025
Subjects: subject: Medicine
subject: Biotechnology
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Supplementary Material 1
Deterministic constant-depth preparation of the AKLT state on a quantum processor using fusion measurements
Creators: name: Smith, Kevin C.
name: Crane, Eleanor
name: Wiebe, Nathan
name: Girvin, S. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The ground state of the spin-1 Affleck, Kennedy, Lieb and Tasaki (AKLT) model is a paradigmatic example of both a matrix product state and a symmetry-protected topological phase, and additionally holds promise as a resource state for measurement-based quantum computation. Having a nonzero correlation length, the AKLT state cannot be exactly prepared by a constant-depth unitary circuit composed of local gates. In this work, we demonstrate that this no-go limit can be evaded by augmenting a constant-depth circuit with fusion measurements, such that the total preparation time is independent of system size and entirely deterministic. We elucidate our preparation scheme using the language of tensor networks, and furthermore show that the $\mathbb{Z}_2\times\mathbb{Z}_2$ symmetry of the AKLT state directly affords this speed-up over previously known preparation methods. To demonstrate the practical advantage of measurement-assisted preparation on noisy intermediate-scale quantum (NISQ) devices, we carry out our protocol on an IBM Quantum processor. We measure both the string order and entanglement spectrum of prepared AKLT chains and, employing these as metrics, find improved results over the known (purely unitary) sequential preparation approach. We conclude with a demonstration of quantum teleportation using the AKLT state prepared by our measurement-assisted scheme. This work thus serves to provide an efficient strategy to prepare a specific resource in the form of the AKLT state and, more broadly, experimentally demonstrates the possibility for realizable improvement in state preparation afforded by measurement-based circuit depth reduction strategies on NISQ-era devices.
description: 17 pages, 8 figures. Supplemental Material: 13 pages, 11 figures
Matrix Models, Emergent Gravity, and Gauge Theory
Creators: name: Steinacker, Harold
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Matrix models of Yang-Mills type induce an effective gravity theory on 4-dimensional branes, which are considered as models for dynamical space-time. We review recent progress in the understanding of this emergent gravity. The metric is not fundamental but arises effectively in the semi-classical limit, along with nonabelian gauge fields. This leads to a mechanism for protecting certain geometries from corrections due to the vacuum energy.
description: 8 pages. Based on invited talks given at the Conferences "Quantum Spacetime and Noncommutative Geometry", Rome, 2008 and at "Workshop on quantum gravity and nocommutative geometry", Lisbon, 2008 and at "Emergent Gravity", Boston, 2008 and at DICE2008, Italy, 2008 and at "QG2 2008 Quantum Geometry and Quantum Gravity", Nottingham, 2008
Re-imagining professional development for social and emotional learning : a case study
Creators: name: Miller, Miriam
Publisher: name: University of British Columbia
Year: 2024

description: This single descriptive case study explores how ongoing and collaborative inquiry-based professional development supports educators as they explore, develop, and apply practices that promote social and emotional learning (SEL) beyond the typical conventions of SEL programs. Educators from a large suburban school district in British Columbia, Canada, participated in a professional development initiative that spanned the 20192020 school year. Together, the teachers examined how they could provide students with opportunities to practice and apply SEL skills within classroom routines, academic instruction, and learning activities. The research study was designed to investigate the following questions: (1) How do educators enact SEL-promoting practices in their classrooms? (2) How does engaging in collaborative inquiry-based professional development support educators in their efforts to explore, develop, and apply SEL-promoting practices beyond the typical conventions of SEL programs? (3) How did COVID-19 impact teachers’ SEL practice? (The third question was developed in response to the unprecedented and unexpected context created by the COVID-19 pandemic.) Findings from this study suggest the importance of educators learning together in a community in which they can ideate, share stories, exchange resources, engage in reflective dialogue, plan instruction, and apply their learning. Results underscore the importance of attending to the relational elements of learning for both teachers and students, including co-creating learning environments that attend to learners’ emotions, foster trust, and promote academic risk taking. Implications for the role of ongoing and collaborative professional development and SEL-supportive practices are discussed.
Improving noise threshold for optical quantum computing with the EPR photon source
Creators: name: Wei, Z. -H.
name: Han, Y. -J.
name: OH, C. H.
name: Duan, L. -M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the noise threshold for optical quantum computing can be significantly improved by using the EPR-type of photon source. In this implementation, the detector efficiency $η_{d}$ is required to be larger than 50%, and the source efficiency $η_{s}$ can be an arbitrarily small positive number. This threshold compares favorably with the implementation using the single-photon source, where one requires the combined efficiency $η_{d}η_{s}>2/3$. We discuss several physical setups for realization of the required EPR photon source, including the photon emitter from a single-atom cavity.
description: 4 pages, 2 figures
Induced Innovation in South American Agriculture: Deforestation and Directed Technical Change
Creators: name: Queiroz, Pedro
name: Fulginiti, Lilyan
name: Perrin, Richard
name: Queiroz, Pedro
name: Fulginiti, Lilyan
name: Perrin, Richard
Publisher: name: Unknown
Year: 2021
Subjects: Resource /Energy Economics and Policy

description: Session ID 4799, Paper# 19962
Spin Channels in Functionalized Graphene Nanoribbons
Creators: name: Cantele, Giovanni
name: Lee, Young-Su
name: Ninno, Domenico
name: Marzari, Nicola
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We characterize the transport properties of functionalized graphene nanoribbons using extensive first-principles calculations based on density functional theory (DFT) that encompass both monovalent and divalent ligands, hydrogenated defects and vacancies. We find that the edge metallic states are preserved under a variety of chemical environments, while bulk conducting channels can be easily destroyed by either hydrogenation or ion or electron beams, resulting in devices that can exhibit spin conductance polarization close to unity.
description: 14 pages, 5 figures
Dewetting dynamics of stressed viscoelastic thin polymer films
Creators: name: Ziebert, Falko
name: Raphael, Elie
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Ultrathin polymer films that are produced e.g. by spin-coating are believed to be stressed since polymers are 'frozen in' into out-of-equilibrium configurations during this process. In the framework of a viscoelastic thin film model, we study the effects of lateral residual stresses on the dewetting dynamics of the film. The temporal evolution of the height profiles and the velocity profiles inside the film as well as the dissipation mechanisms are investigated in detail. Both the shape of the profiles and the importance of frictional dissipation vs. viscous dissipation inside the film are found to change in the course of dewetting. The interplay of the non-stationary profiles, the relaxing initial stress and changes in the dominance of the two dissipation mechanisms caused by nonlinear friction with the substrate is responsible for the rich behavior of the system. In particular, our analysis sheds new light on the occurrence of the unexpected maximum in the rim width obtained recently in experiments on PS-PDMS systems.
description: 11 pages, 10 figures
Assessing multivariate predictors of financial market movements: A latent factor framework for ordinal data
Creators: name: Huber, Philippe
name: Scaillet, Olivier
name: Victoria-Feser, Maria-Pia
Publisher: name: arXiv
Year: 2009
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Much of the trading activity in Equity markets is directed to brokerage houses. In exchange they provide so-called "soft dollars," which basically are amounts spent in "research" for identifying profitable trading opportunities. Soft dollars represent about USD 1 out of every USD 10 paid in commissions. Obviously they are costly, and it is interesting for an institutional investor to determine whether soft dollar inputs are worth being used (and indirectly paid for) or not, from a statistical point of view. To address this question, we develop association measures between what broker--dealers predict and what markets realize. Our data are ordinal predictions by two broker--dealers and realized values on several markets, on the same ordinal scale. We develop a structural equation model with latent variables in an ordinal setting which allows us to test broker--dealer predictive ability of financial market movements. We use a multivariate logit model in a latent factor framework, develop a tractable estimator based on a Laplace approximation, and show its consistency and asymptotic normality. Monte Carlo experiments reveal that both the estimation method and the testing procedure perform well in small samples. The method is then used to analyze our dataset.
description: Published in at http://dx.doi.org/10.1214/08-AOAS213 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Responsive Parallel Computation
Creators: name: Muller, Stefan
Publisher: name: Carnegie Mellon University
Year: 2021
Subjects: Applied Computer Science

description: Multicore processors are becoming increasingly prevalent, blurring the lines between traditional parallel programs, which use cooperative threading to reduce executiontime, and interactive programs which use competitive threading to increase responsiveness. Many applications, from games to database systems, can benefit from a combination of the cooperative and competitive threading models. Unfortunately, languages and tools such as cost models designed for cooperatively threaded programs do not extend easily to features of competitive programs, such as thread priorities. In this thesis, we develop a model that extends the cooperative paradigm to account for features of competitively threaded programs. The contributions of thismodel span several levels of abstraction. First, we include a cost model that extends existing models of cooperative threading in order to allow programmers to reasonabout the parallel running time and the responsiveness of interactive parallel applications. Second, we propose a language that neatly combines abstractions for bothforms of threading, and enables reasoning about efficiency and responsiveness at the level of the source code. Third, we develop a scheduling algorithm that efficientlyhandles threads with both responsiveness and throughput requirements. Finally, we implement the language as part of a compiler for Standard ML, and evaluate it on abenchmark suite including a number of realistic interactive parallel applications.
Investigation of Superconducting Gap Structure in TbFeAsO$_{0.9}$F$_{0.1}$ using Point Contact Andreev Reflection
Creators: name: Yates, K. A.
name: Morrison, K.
name: Rodgers, Jennifer A
name: Penny, George BS
name: Bos, Jan-Willem G
name: Attfield, J. Paul
name: Cohen, L. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Bulk samples of TbFeAsO$_{0.9}$F$_{0.1}$ (T$_{c}$(on) = 50K) were measured by point contact Andreev reflection spectroscopy. The spectra show unambiguous evidence for multiple gap-like features plus the presence of high bias shoulders. By measuring the spectra as a function of temperature with both gold and superconducting niobium tips, we establish that the gap-like features are associated with superconducting order parameter in this material. We discuss whether the well defined zero bias conductance peak that we observe infrequently is associated with a nodal superconducting order parameter.
description: 11 pages, 5 figures, published version