cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Farmer Self-Organizing Innovation in the Marginal Areas of China: A Study of Farmer Communication Networks in Zhidan, Loess Plateau
Creators: name: Wu, Bin
name: Parnwell, Mike
name: Bradley, Phillip
name: Wu, Bin
name: Parnwell, Mike
name: Bradley, Phillip
Publisher: name: Unknown
Year: 2002
Subjects: Farm Management

description: Farmer innovation involves communication on both the vertical (between farmers and outsiders) and horizontal (among farmers) planes. When faced with barriers to vertical communication, small farmers in marginal areas have to depend on their own communication networks for knowledge diffusion and sharing. It leads to "farmer self-organizing innovation" (FSI) - an innovation process which is initiated, controlled and implemented by farmers themselves. This paper attempts to indicate: (1) what position the FSI has taken in innovation studies; (2) how farmers use and develop their communication network (FCN) for technology learning and innovation cooperation; and (3) what lessons and policy implications can be learnt from farmer innovation and self-organization. Based upon an integrated survey in Zhidan, a poor county of the Loess Plateau, itis argued that the innovative capacity of the rural poor in China might be difficult to strengthen unless more attention is paid to the promotion of farmer communication and cooperation. This paper also draws attention to the policy implications of promoting farmer innovation and building self-organizing networks in respect of rural sustainability in China in the 21 st ..C. entury.
Additional file 5 of Correlation of skull morphology and bite force in a bird-eating bat (Ia io; Vespertilionidae)
Creators: name: Shi, Biye
name: Wang, Yuze
name: Gong, Lixin
name: Chang, Yang
name: Liu, Tong
name: Zhao, Xin
name: Lin, Aiqing
name: Feng, Jiang
name: Jiang, Tinglei
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 5 : Table S2. Species, sample size (N), diets, and collection locations of bats.
title: Development and optimization of molecularly imprinted polymers for the analysis of organic pollutants in environmental water samples
Creators: name: Golbabanezhadazizi, Aliasghar
Publisher: name: Memorial University of Newfoundland
Year: 2020

description: Agricultural, industrial, and municipal water releasing organic contaminants into the environment is of serious ongoing concern. To monitor these waterborne pollutants, sample preparation steps are required prior to analysis. Consequently, massive efforts have been directed toward new approaches that are fast, selective, cost-effective, user-friendly and green. Molecularly imprinted polymers (MIPs) are an elegant solution to add selectivity into sorptive materials. In this thesis, MIPs were prepared using different polymerization techniques and in various formats such as MIP particles, MIP thin film, and MIP-coated mesh. The prepared sorbents were successfully utilized for extraction of different classes of pollutants such as polycyclic aromatic hydrocarbons (PAHs) and organophosphorus pesticides (OPPs) from water samples. To improve the heterogeneity of MIPs, a controllable polymerization mechanism (reversible addition fragmentation chain transfer (RAFT) polymerization) was implemented for synthesis MIPs on Fe₃O₄@SiO₂ particles for extraction of PAHs. A tailormade MIP formulation was also created and optimized for selective extraction of OPPs from water. The sorbent formulae are versatile for use in different formats such as thin film and mesh. MIP extraction devices can be readily interfaced with various detection systems such as gas chromatography flame ionization detector (GC-FID), atmospheric pressure chemical ionization gas chromatography-tandem mass spectrometry (APCI-GCMS/ MS) and liquid chromatography -tandem mass spectrometry (LC-MS/MS) using liquid desorption, and thermal desorption. Additionally, these devices can increase the throughput, reliability, and simplicity of environmental analysis. For example, we developed a new solvent assisted thermal desorption head space (ST-HD) method, which we demonstrate to be excellent for the introduction of analytes enriched by MIP thin films, and it is amenable to direct and semi-automated method improving reproducibility and throughput. In this thesis, MIP fabrication and performance will be demonstrated and evaluated. The value MIP techniques in providing precious sensitivity, selectivity to the quality of analysis of organic pollutants in water is presented.
Planck's radiation law, the light quantum, and the prehistory of indistinguishability in the teaching of quantum mechanics
Creators: name: Passon, Oliver
name: Grebe-Ellis, Johannes
Publisher: name: arXiv
Year: 2017
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: Planck's law for black-body radiation marks the origin of quantum theory and is discussed in all introductory (or advanced) courses on this subject. However, the question whether Planck really implied quantisation is debated among historians of physics. We present a simplified account of this debate which also sheds light on the issue of indistinguishability and Einstein's light quantum hypothesis. We suggest that the teaching of quantum mechanics could benefit from including this material beyond the question of historical accuracy.
description: 14 pages, no figures
Atmospheric Drag, Occultation 'N' Ionospheric Scintillation (ADONIS) mission proposal
Creators: name: Hettrich, Sebastian
name: Kempf, Yann
name: Perakis, Nikolaos
name: Górski, Jȩdrzej
name: Edl, Martina
name: Urbár, Jaroslav
name: Dósa, Melinda
name: Gini, Francesco
name: Roberts, Owen W.
name: Schindler, Stefan
name: Schemmer, Maximilian
name: Steenari, David
name: Joldžić, Nina
name: Ødegaard, Linn-Kristine Glesnes
name: Sarria, David
name: Volwerk, Martin
name: Praks, Jaan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The Atmospheric Drag, Occultation 'N' Ionospheric Scintillation mission (ADONIS) studies the dynamics of the terrestrial thermosphere and ionosphere in dependency of solar events over a full solar cycle in Low Earth Orbit (LEO). The objectives are to investigate satellite drag with in-situ measurements and the ionospheric electron density profiles with radio occultation and scintillation measurements. A constellation of two satellites provides the possibility to gain near real-time data (NRT) about ionospheric conditions over the Arctic region where current coverage is insufficient. The mission shall also provide global high-resolution data to improve assimilative ionospheric models. The low-cost constellation can be launched using a single Vega rocket and most of the instruments are already space-proven allowing for rapid development and good reliability. From July 16 to 25, 2013, the Alpbach Summer School 2013 was organised by the Austrian Research Promotion Agency (FFG), the European Space Agency (ESA), the International Space Science Institute (ISSI) and the association of Austrian space industries Austrospace in Alpbach, Austria. During the workshop, four teams of 15 students each independently developed four different space mission proposals on the topic of "Space Weather: Science, Missions and Systems", supported by a team of tutors. The present work is based on the mission proposal that resulted from one of these teams' efforts.
Mixing rate in infinite measure for Z^d-extension, application to the periodic Sinai billiard
Creators: name: Pène, Françoise
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We study the rate of mixing of observables of Z^d-extensions of probability preserving dynamical systems. We explain how this question is directly linked to the local limit theorem and establish a rate of mixing for general classes of observables of the Z^2-periodic Sinai billiard. We compare our approach with the induction method.
Additional file 7 of Correlation of skull morphology and bite force in a bird-eating bat (Ia io; Vespertilionidae)
Creators: name: Shi, Biye
name: Wang, Yuze
name: Gong, Lixin
name: Chang, Yang
name: Liu, Tong
name: Zhao, Xin
name: Lin, Aiqing
name: Feng, Jiang
name: Jiang, Tinglei
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 7 : Table S3. Information related to genes used in the study.
Dealing with missing data in the MICROSCOPE space mission: An adaptation of inpainting to handle colored-noise data
Creators: name: Pires, Sandrine
name: Bergé, Joel
name: Baghi, Quentin
name: Touboul, Pierre
name: Métris, Gilles
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The MICROSCOPE space mission, launched on April 25, 2016, aims to test the weak equivalence principle (WEP) with a 10^-15 precision. To reach this performance requires an accurate and robust data analysis method, especially since the possible WEP violation signal will be dominated by a strongly colored noise. An important complication is brought by the fact that some values will be missing -therefore, the measured time series will not be strictly regularly sampled. Those missing values induce a spectral leakage that significantly increases the noise in Fourier space, where the WEP violation signal is looked for, thereby complicating scientific returns. Recently, we developed an inpainting algorithm to correct the MICROSCOPE data for missing values. This code has been integrated in the official MICROSCOPE data processing pipeline because it enables us to significantly measure an equivalence principle violation (EPV) signal in a model-independent way, in the inertial satellite configuration. In this work, we present several improvements to the method that may allow us now to reach the MICROSCOPE requirements for both inertial and spin satellite configurations. The main improvement has been obtained using a prior on the power spectrum of the colored-noise that can be directly derived from the incomplete data. We show that after reconstructing missing values with this new algorithm, a least-squares fit may allow us to significantly measure an EPV signal with a 0.96x10^-15 precision in the inertial mode and 1.2x10^-15 precision in the spin mode. Although, the inpainting method presented in this paper has been optimized to the MICROSCOPE data, it remains sufficiently general to be used in the general context of missing data in time series dominated by an unknown colored-noise. The improved inpainting software, called ICON, is freely available at http://www.cosmostat.org/software/icon.
description: 10 pages, 8 figures, 1 table, Accepted for publication in Physical Review D
Quantitative disentanglement of spin Seebeck, proximity-induced and intrinsic anomalous Nernst effect in NM/FM bilayers
Creators: name: Bougiatioti, Panagiota
name: Klewe, Christoph
name: Meier, Daniel
name: Manos, Orestis
name: Kuschel, Olga
name: Wollschläger, Joachim
name: Bouchenoire, Laurence
name: Brown, Simon D.
name: Schmalhorst, Jan-Michael
name: Reiss, Günter
name: Kuschel, Timo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We identify and investigate thermal spin transport phenomena in sputter-deposited Pt/NiFe$_2$O$_{\textrm{4-x}}$ ($4\geq x \geq 0$) bilayers. We separate the voltage generated by the spin Seebeck effect from the anomalous Nernst effect contributions and even disentangle the intrinsic anomalous Nernst effect (ANE) in the ferromagnet (FM) from the ANE produced by the Pt that is spin polarized due to its proximity to the FM. Further, we probe the dependence of these effects on the electrical conductivity and the band gap energy of the FM film varying from nearly insulating NiFe$_2$O$_4$ to metallic Ni$_{33}$Fe$_{67}$. A proximity-induced ANE could only be identified in the metallic Pt/Ni$_{33}$Fe$_{67}$ bilayer in contrast to Pt/NiFe$_2$O$_{\rm x}$ ($x>0$) samples. This is verified by the investigation of static magnetic proximity effects via x-ray resonant magnetic reflectivity.
Additional file 7 of Comparative analysis of the kinomes of Plasmodium falciparum, Plasmodium vivax and their host Homo sapiens
Creators: name: Adderley, Jack
name: Doerig, Christian
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Additional file 7: Supplementary Figure 9. Sequence logos for the 17 highly conserved regions of the protein kinase domain for Homo sapiens and Plasmodium(P. falciparum,P. vivax).
title: Canadian Literature, No 239 (2020): 60th Anniversary
title: 60th Anniversary
titleType: AlternativeTitle
Creators: name: Canadian Literature
Publisher: name: Canadian Literature
Year: 2020

description: Ghosted into Submission...29-30 A Diamond Anniversary...6-9 Traces de vie...156-157 60th Anniversary Forum...11-28 The Canals of Mars...107 Those Were The Days...169-171 Fantômes et impostures dans La fureur de ce que je pense de Marie Brassard d’après des textes de Nelly Arcan...31-47 errorgatio...85-86 Corrosive Aesthetics: On the Receiving End of Oil and Gas in Who By Fire...50-65 "Patchwork Crazy Quilt"...154-155 Under Lock & Key...66-67 “Men break when things like that happen”...68-84 A Witnessing...132-133 Half Way...48-49 The Decolonization of Print, Digital and Oral Space in Jordan Abel’s Injun...87-106 More Life...130-131 In the archive of sensuality...10 The Spice Box, Old and New...172-177 Black Canadian Archives...143-144 "The cultures of Orient and Occident must be together in the character, imagination, and ideas of the writer" : A Conversation with Naim Kattan...178-182 I, Wound...125 "But there were tender stories too": Economies of Care...126-126 Dare to be true...162-163 “Your own guilty story”...108-124 Darkness Visible...165-167 Productive Uncertainties...145-146 Quarrelling with Ghosts...136-137 À la trace...167-168 Possible Moves...139-140 The Delicious Core...163-164 Murder and Sin in T-Dot...133-134 What Kind of Debut Are You...147-148 Reimagining Women's Histories...140-141 Rethinking the Breakup...159-159 An "Incontestable Beauty"...153-154 Uncovering the Truth in Memoirs...146-147 L'art et ses issues...155-156 Déambuler dans le « temps » et dans l'imaginaire d'un pays...160-162 Bromance and Empathy...135-136 A Decolonial Love Story...127-127 Myths and Memories...157-158 Finding the Correct Light...128-129 Woman Listening...168-169 Cultivating the Game...128-128 Beyond Autonomy...151-153 Remembering Margaret Laurence and Jack McClelland...148-150 Not Another Book About Landscape...159-160 Ideas in Things...164-165 Bodies and Languages...131-132 Shifting Grounds...150-151 Des triangles amoureux imprévus...141-143 Love under Capitalism...135-136
Opportunistic Communication in Extreme Wireless Sensor Networks
Creators: name: Cattani, Marco
Publisher: name: arXiv
Year: 2017
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Sensor networks can nowadays deliver 99.9% of their data with duty cycles below 1%. This remarkable performance is, however, dependent on some important underlying assumptions: low traffic rates, medium size densities and static nodes. In this thesis, we investigate the performance of these same resource-constrained devices, but under scenarios that present extreme conditions: high traffic rates, high densities and mobility: the so-called Extreme Wireless Sensor Networks (EWSNs).
“Your own guilty story”
Creators: name: Chivers, Sally
Publisher: name: Canadian Literature
Year: 2020

description: Apocalyptic visions of an aging population rest on negative assumptions about the costs and effects of increasing numbers of people with dementia. Such discourse emphasizes a desire for cure and amplifies the costs of care while ignoring the broader cultural implications of dementia. Literary portrayals offer the opportunity to broaden the figurative landscape to raise questions about what it means for a population to age. Drawing on age studies, this contextualized close reading of David Chariandy’s Soucouyant offers another way to think about global aging, the implications of memory loss, and how care work affects relationships. The novel’s never named narrator concocts “guilty stories” that orient him to his mother’s dementia but do not adequately account for the care work his mother’s friend, Mrs. Christopher, has done over decades. Thus, the novel pertains to the political economy of aging by surfacing connections among care relations, cultural memory, and dementia.
description: Canadian Literature, No 239 (2020): 60th Anniversary
Existence and concentration of positive ground state solutions for nonlinear fractional Schrödinger-Poisson system with critical growth
Creators: name: Teng, Kaimin
name: Agarwal, Ravi P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B38, 35R11

description: In this paper, we study the following fractional Schrödinger-Poisson system involving competing potential functions \begin{equation*} \left\{ \begin{array}{ll} \varepsilon^{2s}(-Δ)^su+V(x)u+ϕu=K(x)f(u)+Q(x)|u|^{2_s^{\ast}-2}u, & \hbox{in $\mathbb{R}^3$,} \varepsilon^{2t}(-Δ)^tϕ=u^2,& \hbox{in $\mathbb{R}^3$,} \end{array} \right. \end{equation*} where $\varepsilon>0$ is a small parameter, $f$ is a function of $C^1$ class, superlinear and subcritical nonlinearity, $2_s^{\ast}=\frac{6}{3-2s}$, $s>\frac{3}{4}$, $t\in(0,1)$, $V(x)$ $K(x)$ and $Q(x)$ are positive continuous function. Under some suitable assumptions on $V$, $K$ and $Q$, we prove that there is a family of positive ground state solutions with polynomial growth for sufficiently small $\varepsilon>0$, of which it is concentrating on the set of minimal points of $V(x)$ and the sets of maximal points of $K(x)$ and $Q(x)$. The methods are based on the Nehari manifold, arguments of Brezis-Nirenberg and concentration compactness of P. L. Lions.
Graphene photodetectors with a bandwidth larger than 76 GHz fabricated in a 6 inch wafer process line
Creators: name: Schall, Daniel
name: Porschatis, Caroline
name: Otto, Martin
name: Neumaier, Daniel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In recent years, the data traffic has grown exponentially and the forecasts indicate a huge market that could be addressed by communication infrastructure and service providers. However, the processing capacity, space, and energy consumption of the available technology is a serious bottleneck for the exploitation of these markets. Chip-integrated optical communication systems hold the promise of significantly improving these issues related to the current technology. At the moment, the answer to the question which material is best suited for ultrafast chip integrated communication systems is still open. In this manuscript we report on ultrafast graphene photodetectors with a bandwidth of more than 76 GHz well suitable for communication links faster than 100 GBit/s per channel. We extract an upper value of 7.2 ps for the timescale in which the bolometric photoresponse in graphene is generated. The photodetectors were fabricated on 6 inch silicon-on-insulator wafers in a semiconductor pilot line, demonstrating the scalable fabrication of high-performance graphene based devices.
Multi-Behavior Enhanced Recommendation with Cross-Interaction Collaborative Relation Modeling
Creators: name: Xia, Lianghao
name: Huang, Chao
name: Xu, Yong
name: Dai, Peng
name: Lu, Mengyin
name: Bo, Liefeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Many previous studies aim to augment collaborative filtering with deep neural network techniques, so as to achieve better recommendation performance. However, most existing deep learning-based recommender systems are designed for modeling singular type of user-item interaction behavior, which can hardly distill the heterogeneous relations between user and item. In practical recommendation scenarios, there exist multityped user behaviors, such as browse and purchase. Due to the overlook of user's multi-behavioral patterns over different items, existing recommendation methods are insufficient to capture heterogeneous collaborative signals from user multi-behavior data. Inspired by the strength of graph neural networks for structured data modeling, this work proposes a Graph Neural Multi-Behavior Enhanced Recommendation (GNMR) framework which explicitly models the dependencies between different types of user-item interactions under a graph-based message passing architecture. GNMR devises a relation aggregation network to model interaction heterogeneity, and recursively performs embedding propagation between neighboring nodes over the user-item interaction graph. Experiments on real-world recommendation datasets show that our GNMR consistently outperforms state-of-the-art methods. The source code is available at https://github.com/akaxlh/GNMR.
description: Published on ICDE 2021
Relative efficiency of polariton emission in two-dimensional materials
Creators: name: Dai, Siyuan
name: Ma, Qiong
name: Yang, Yafang
name: Rosenfeld, Jeremy
name: Goldflam, Michael D.
name: McLeod, Alex
name: Sun, Zhiyuan
name: Andersen, Trond I.
name: Fei, Zhe
name: Liu, Mengkun
name: Shao, Yinming
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Thiemens, Mark
name: Keilmann, Fritz
name: Jarillo-Herrero, Pablo
name: Fogler, Michael M.
name: Basov, D. N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigated emission and propagation of polaritons in a two dimensional van der Waals material hexagonal boron nitride (hBN). Our specific emphasis in this work is on hyperbolic phonon polariton emission that we investigated by means of scattering-type scanning near-field optical microscopy. Real-space nano-images detail how the polaritons are launched in several common arrangements including: light scattering by the edges of the crystal, metallic nanostructures deposited on the surface of hBN crystals, as well as random defects and impurities. Notably, the scanned tip of the near-field microscope is itself an efficient polariton launcher. Our analysis reveals that the scanning tips are superior to other types of emitters we have investigated. Furthermore, the study of polariton emission and emission efficiency may provide insights for development of polaritonic devices and for fundamental studies of collective modes in other van der Waals materials.
description: 19 pages, 3 figures
Approximate Bayes learning of stochastic differential equations
Creators: name: Batz, Philipp
name: Ruttor, Andreas
name: Opper, Manfred
Publisher: name: arXiv
Year: 2017
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We introduce a nonparametric approach for estimating drift and diffusion functions in systems of stochastic differential equations from observations of the state vector. Gaussian processes are used as flexible models for these functions and estimates are calculated directly from dense data sets using Gaussian process regression. We also develop an approximate expectation maximization algorithm to deal with the unobserved, latent dynamics between sparse observations. The posterior over states is approximated by a piecewise linearized process of the Ornstein-Uhlenbeck type and the maximum a posteriori estimation of the drift is facilitated by a sparse Gaussian process approximation.
description: 18 pages, 22 figures
Additional file 9 of Comparative analysis of the kinomes of Plasmodium falciparum, Plasmodium vivax and their host Homo sapiens
Creators: name: Adderley, Jack
name: Doerig, Christian
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Additional file 9: Supplementary Figure 11. Phylogenetic tree comparing the members of the Cyclin family in Plasmodium falciparum (highlighted blue) and Plasmodium vivax (highlighted red) to a seed of sequences representative of the family (Pfam IDs PF00134 and PF08613) available at pfam.xfam.org/ [57]. Bootstrap support greater than 50 are indicated on the respective branches. RAxML settings: maximum-likelihood rapid bootstrap with the PROTgamma substitution model LG4M, and AutoMRE. The gene tree was rendered using the webserver iTOL [53].
Raman study of electron-phonon coupling in thin films of LiTi$_2$O$_4$ spinel oxide superconductor
Creators: name: Chen, D.
name: Jia, Y. -L.
name: Zhang, T. -T.
name: Fang, Z.
name: Jin, K.
name: Richard, P.
name: Ding, H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We performed a Raman scattering study of thin films of LiTi$_2$O$_4$ spinel oxide superconductor. We detected four out of five Raman active modes, with frequencies in good accordance with our first-principles calculations. Three T$_{2g}$ modes show a Fano lineshape from 5 K to 295 K, which suggests an electron-phonon coupling in LiTi$_2$O$_4$. Interestingly, the electron-phonon coupling shows an anomaly across the negative to positive magnetoresistance transition at 50 K, which may be due to the unset of other competing orders. The strength of the electron-phonon interaction estimated from the Allen's formula and the observed lineshape parameters suggests that the three T$_{2g}$ modes contribute little to superconductivity.
description: 5 pages, 3 figures, 1 table
Thermodynamic Stabilization of Precipitates through Interface Segregation: Chemical Effects
Creators: name: Kadambi, Sourabh B
name: Patala, Srikanth
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Precipitation hardening, which relies on a high density of intermetallic precipitates, is a commonly utilized technique for strengthening structural alloys. Structural alloys are commonly strengthened through a high density of small size intermetallic precipitates. At high temperatures, however, the precipitates coarsen to reduce the excess energy of the interface, resulting in a significant reduction in the strengthening provided by the precipitates. In certain ternary alloys, the secondary solute segregates to the interface and results in the formation of a high density of nanosize precipitates that provide enhanced strength and are resistant to coarsening. To understand the chemical effects involved, and to identify such systems, we develop a thermodynamic model using the framework of the regular nanocrystalline solution model. For various global compositions, temperatures and thermodynamic parameters, equilibrium configuration of Mg-Sn-Zn alloy is evaluated by minimizing the Gibbs free energy function with respect to the region-specific (bulk solid-solution, interface and precipitate) concentrations and sizes. The results show that Mg$_2$Sn precipitates can be stabilized to nanoscale sizes through Zn segregation to Mg/Mg$_2$Sn interface, and the precipitates can be stabilized against coarsening at high-temperatures by providing a larger Zn concentration in the system. Together with the inclusion of elastic strain energy effects and the input of computationally informed interface thermodynamic parameters in the future, the model is expected to provide a more realistic prediction of segregation and precipitate stabilization in ternary alloys of structural importance.
Manifestly Local Formulation of Nonlocal Approach to the Cosmological Constant Problem
Creators: name: Oda, Ichiro
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a manifestly local and general coordinate invariant formulation of a nonlocal approach to the cosmological constant problem which has been recently proposed by Carroll and Remmen. To do that, we need to introduce a topological term involving a new 3-form gauge field. The equations of motion for this new 3-form gauge field lead to a constant Lagrange multiplier parameter and the resulting action becomes equivalent to that of Carroll and Remmen. In our formulation, nonlocal informations are encoded via the procedure of taking the space-time average at the stage of the equations of motion. Consequently, our theory evades a no-go theorem by Weinberg and provides a new solution to the cosmological constant problem in almost exactly the same way as the original proposal by Carroll et al.
description: 7 pages
Muscle Fatigue Analysis Using OpenSim
Creators: name: Chang, Jing
name: Chablat, Damien
name: Bennis, Fouad
name: Ma, Liang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: In this research, attempts are made to conduct concrete muscle fatigue analysis of arbitrary motions on OpenSim, a digital human modeling platform. A plug-in is written on the base of a muscle fatigue model, which makes it possible to calculate the decline of force-output capability of each muscle along time. The plug-in is tested on a three-dimensional, 29 degree-of-freedom human model. Motion data is obtained by motion capturing during an arbitrary running at a speed of 3.96 m/s. Ten muscles are selected for concrete analysis. As a result, the force-output capability of these muscles reduced to 60%-70% after 10 minutes' running, on a general basis. Erector spinae, which loses 39.2% of its maximal capability, is found to be more fatigue-exposed than the others. The influence of subject attributes (fatigability) is evaluated and discussed.
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): A Hot Corino Survey toward Protostellar Cores in the Orion Cloud
Creators: name: Hsu, Shih-Ying
name: Liu, Sheng-Yuan
name: Liu, Tie
name: Sahu, Dipen
name: Lee, Chin-Fei
name: Tatematsu, Kenichi
name: Kim, Kee-Tae
name: Hirano, Naomi
name: Yang, Yao-Lun
name: Johnstone, Doug
name: Liu, Hongli
name: Juvela, Mika
name: Bronfman, Leonardo
name: Chen, Huei-Ru Vivien
name: Dutta, Somnath
name: Eden, David J.
name: Jhan, Kai-Syun
name: Kuan, Yi-Jehng
name: Lee, Chang Won
name: Lee, Jeong-Eun
name: Li, Shanghuo
name: Liu, Chun-Fan
name: Qin, Sheng-Li
name: Sanhueza, Patricio
name: Shang, Hsien
name: Soam, Archana
name: Traficante, Alessio
name: Zhou, Jianjun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The presence of complex organic molecules (COMs) in the interstellar medium (ISM) is of great interest since it may link to the origin and prevalence of life in the universe. Aiming to investigate the occurrence of COMs and their possible origins, we conducted a chemical census toward a sample of protostellar cores as part of the ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP) project. We report the detection of 11 hot corino sources, which exhibit compact emissions from warm and abundant COMs, among 56 Class 0/I protostellar cores. All the hot corino sources discovered are likely Class 0 and their sizes of the warm region ($>$ 100 K) are comparable to 100 au. The luminosity of the hot corino sources exhibits positive correlations with the total number of methanol and the extent of its emissions. Such correlations are consistent with the thermal desorption picture for the presence of hot corino and suggest that the lower luminosity (Class 0) sources likely have a smaller region with COMs emissions. With the same sample selection method and detection criteria being applied, the detection rates of the warm methanol in the Orion cloud (15/37) and the Perseus cloud (28/50) are statistically similar when the cloud distances and the limited sample size are considered. Observing the same set of COM transitions will bring a more informative comparison between the cloud properties.
description: 34 pages. 14 figures. 1 figure set. 1 machine-readable table. Accepted for publication in ApJ
Project IRL: Playful Co-Located Interactions with Mobile Augmented Reality
Creators: name: Dagan, Ella
name: Gasca, Ana Cárdenas
name: Robinson, Ava
name: Noriega, Anwar
name: Tham, Yu Jiang
name: Vaish, Rajan
name: Monroy-Hernández, Andrés
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: We present Project IRL (In Real Life), a suite of five mobile apps we created to explore novel ways of supporting in-person social interactions with augmented reality. In recent years, the tone of public discourse surrounding digital technology has become increasingly critical, and technology's influence on the way people relate to each other has been blamed for making people feel "alone together," diverting their attention from truly engaging with one another when they interact in person. Motivated by this challenge, we focus on an under-explored design space: playful co-located interactions. We evaluated the apps through a deployment study that involved interviews and participant observations with 101 people. We synthesized the results into a series of design guidelines that focus on four themes: (1) device arrangement (e.g., are people sharing one phone, or does each person have their own?), (2) enablers (e.g., should the activity focus on an object, body part, or pet?), (3) affordances of modifying reality (i.e., features of the technology that enhance its potential to encourage various aspects of social interaction), and (4) co-located play (i.e., using technology to make in-person play engaging and inviting). We conclude by presenting our design guidelines for future work on embodied social AR.
EOVSA Implementation of a Spectral Kurtosis Correlator for Transient Detection and Classification
Creators: name: Nita, Gelu M.
name: Hickish, Jack
name: MacMahon, David
name: Gary, Dale E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We describe in general terms the practical use in astronomy of a higher-order statistical quantity called Spectral Kurtosis (SK), and describe the first implementation of SK-enabled firmware in the F-engine (Fourier transform-engine) of a digital FX correlator for Expanded Owens Valley Solar Array (EOVSA). The development of the theory for SK is summarized, leading to an expression for generalized SK that is applicable to both SK spectrometers and those not specifically designed for SK. We also give the means for computing both the SK estimator and thresholds for its application as a discriminator of RFI contamination. Tests of the performance of EOVSA as an SK spectrometer are shown to agree precisely with theoretical expectations, and the methods for configuring the correlator for correct SK operation are described.
description: 16 pages, 4 figures
Low-rank computation of posterior covariance matrices in Bayesian inverse problems
Creators: name: Benner, Peter
name: Qiu, Yue
name: Stoll, Martin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We consider the problem of estimating the uncertainty in statistical inverse problems using Bayesian inference. When the probability density of the noise and the prior are Gaussian, the solution of such a statistical inverse problem is also Gaussian. Therefore, the underlying solution is characterized by the mean and covariance matrix of the posterior probability density. However, the covariance matrix of the posterior probability density is full and large. Hence, the computation of such a matrix is impossible for large dimensional parameter spaces. It is shown that for many ill-posed problems, the Hessian matrix of the data misfit part has low numerical rank and it is therefore possible to perform a low-rank approach to approximate the posterior covariance matrix. For such a low-rank approximation, one needs to solve a forward partial differential equation (PDE) and the adjoint PDE in both space and time. This in turn gives $\mathcal{O}(n_x n_t)$ complexity for both, computation and storage, where $n_x$ is the dimension of the spatial domain and $n_t$ is the dimension of the time domain. Such computations and storage demand are infeasible for large problems. To overcome this obstacle, we develop a new approach that utilizes a recently developed low-rank in time algorithm together with the low-rank Hessian method. We reduce both the computational complexity and storage requirement from $\mathcal{O}(n_x n_t)$ to $\mathcal{O}(n_x + n_t)$. We use numerical experiments to illustrate the advantages of our approach.
North-south asymmetries in cold plasma density in the magnetotail lobes: Cluster observations
Creators: name: Haaland, S.
name: Lybekk, B.
name: Maes, L.
name: Laundal, K.
name: Pedersen, A.
name: Tenfjord, P.
name: Ohma, A.
name: Østgaard, N.
name: Reistad, J.
name: Snekvik, K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In this paper, we present observations of cold (0-70 eV) plasma density in the magnetotail lobes. The observations and results are based on 16 years of Cluster observation of spacecraft potential measurements converted into local plasma densities. Measurements from all four Cluster spacecraft have been used, and the survey indicates a persistent asymmetry in lobe density, with consistently higher cold plasma densities in the northern lobe. External influences, such as daily and seasonal variations in the Earth's tilt angle, can introduce temporary north-south asymmetries through asymmetric ionization of the two hemispheres. Likewise, external drivers, such as the orientation of the interplanetary magnetic field can set up additional spatial asymmetries in outflow and lobe filling. The persistent asymmetry reported in this paper is also influenced by these external factors but is mainly caused by differences in magnetic field configuration in the Northern and Southern Hemisphere ionospheres.
Exchange Rates and Political Uncertainty: The Brexit Case
Creators: name: Manasse, Paolo
name: Moramarco, Graziano
name: Trigilia, Giulio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2020
Subjects: SECS-P/01 Economia politica

description: This paper studies the impact of political risk on exchange rates. We focus on the Brexit Referendum as it provides a natural experiment where both exchange rate expectations and a time-varying political risk factor can be measured directly. We build a simple portfolio model which predicts that an increase in the Leave probability triggers a depreciation of the British Pound, both on account of exchange rate expectations and of political risk. We estimate the model for multilateral and bilateral British Pound exchange rates. The results confirm the model’s main implications. When we extend the analysis to a portfolio model of multiple currencies, we find that the cross-currencies restrictions implied by the theory are not rejected by our system estimation. Moreover, the joint estimates of the multi-currency model in the presence of time-varying political risk premium are in many cases consistent with the Uncovered Interest Parity.
Oxygen vacancies in strained SrTiO$_{3}$ thin films: formation enthalpy and manipulation
Creators: name: Iglesias, L.
name: Sarantopoulos, A.
name: Magen, C.
name: Rivadulla, F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the enthalpy of oxygen vacancy formation in thin films of electron-doped SrTiO$_{3}$, under different degrees of epitaxial stress. We demonstrate that both compressive and tensile strain decrease this energy at a very similar rate, and promote the formation of stable doubly ionized oxygen vacancies. Moreover, we also show that unintentional cationic vacancies introduced under typical growth conditions, produce a characteristic rotation pattern of TiO$_6$ octahedra. The local concentration of oxygen vacancies can be modulated by an electric field with an AFM tip, changing not only the local electrical potential, but also producing a non-volatile mechanical response whose sign (up/down) can be reversed by the electric field.
description: Physical Review B (accepted for publication)
Sharp bounds for composition with quasiconformal mappings in Sobolev spaces
Creators: name: Oliva, Marcos
name: Prats, Martí
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 30C65, 46E35, 47A57

description: Let $ϕ$ be a quasiconformal mapping, and let $T_ϕ$ be the composition operator which maps $f$ to $f\circϕ$. Since $ϕ$ may not be bi-Lipschitz, the composition operator need not map Sobolev spaces to themselves. The study begins with the behavior of $T_ϕ$ on $L^p$ and $W^{1,p}$ for $1
description: 19 pages, 5 figures
Collaborative Reflection-Augmented Autoencoder Network for Recommender Systems
Creators: name: Xia, Lianghao
name: Huang, Chao
name: Xu, Yong
name: Xu, Huance
name: Li, Xiang
name: Zhang, Weiguo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: As the deep learning techniques have expanded to real-world recommendation tasks, many deep neural network based Collaborative Filtering (CF) models have been developed to project user-item interactions into latent feature space, based on various neural architectures, such as multi-layer perceptron, auto-encoder and graph neural networks. However, the majority of existing collaborative filtering systems are not well designed to handle missing data. Particularly, in order to inject the negative signals in the training phase, these solutions largely rely on negative sampling from unobserved user-item interactions and simply treating them as negative instances, which brings the recommendation performance degradation. To address the issues, we develop a Collaborative Reflection-Augmented Autoencoder Network (CRANet), that is capable of exploring transferable knowledge from observed and unobserved user-item interactions. The network architecture of CRANet is formed of an integrative structure with a reflective receptor network and an information fusion autoencoder module, which endows our recommendation framework with the ability of encoding implicit user's pairwise preference on both interacted and non-interacted items. Additionally, a parametric regularization-based tied-weight scheme is designed to perform robust joint training of the two-stage CRANet model. We finally experimentally validate CRANet on four diverse benchmark datasets corresponding to two recommendation tasks, to show that debiasing the negative signals of user-item interactions improves the performance as compared to various state-of-the-art recommendation techniques. Our source code is available at https://github.com/akaxlh/CRANet.
description: A Research Paper Published on ACM Transactions on Information Systems (TOIS) 2021
Light fields in complex media: mesoscopic scattering meets wave control
Creators: name: Rotter, Stefan
name: Gigan, Sylvain
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The newly emerging field of wave front shaping in complex media has recently seen enormous progress. The driving force behind these advances has been the experimental accessibility of the information stored in the scattering matrix of a disordered medium, which can nowadays routinely be exploited to focus light as well as to image or to transmit information even across highly turbid scattering samples. We will provide an overview of these new techniques, of their experimental implementations as well as of the underlying theoretical concepts following from mesoscopic scattering theory. In particular, we will highlight the intimate connections between quantum transport phenomena and the scattering of light fields in disordered media, which can both be described by the same theoretical concepts. We also put particular emphasis on how the above topics relate to application-oriented research fields such as optical imaging, sensing and communication.
description: 73 pages, 39 figures; invited review article for Reviews of Modern Physics, published here with extra figures and an added section on experimental techniques for wavefront shaping (see section IV)
Additional file 2 of Mapping recommended strategies to promote active and healthy lifestyles through physical education classes: a scoping review
Creators: name: Bandeira, Alexsandra da Silva
name: Ravagnani, Fabricio Cesar de Paula
name: Barbosa Filho, Valter Cordeiro
name: de Oliveira, Victor José Machado
name: de Camargo, Edina Maria
name: Tenório, Maria Cecília Marinho
name: Sandreschi, Paula Fabricio
name: dos Santos, Priscila Cristina
name: Ramires, Virgílio Viana
name: Hallal, Pedro Curi
name: Silva, Kelly Samara
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Additional file 2.