cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measuring unconditional stimulus expectancy during evaluative conditioning strengthens explicit conditional stimulus valence
Creators: name: Luck, Camilla C.
name: Lipp, Ottmar V.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 111714 Mental Health
subject: FOS: Health sciences

description: During evaluative conditioning, a neutral conditional stimulus (CS) becomes pleasant or unpleasant after pairings with a positive/negative unconditional stimulus (US). Measures of US expectancy are commonly assessed during conditioning but it is unclear whether this affects evaluative learning. In Experiment 1, we examined whether the concurrent assessment of US expectancy alongside measures of CS valence would influence the acquisition, extinction, and reinstatement of explicit CS valence. Participants rated both valence and expectancy during conditioning (valence/expectancy group) or only CS valence (valence only group). Evaluative conditioning was acquired in both groups during acquisition, but its magnitude was enhanced in the valence/expectancy group. Measuring US expectancy did not influence the extinction or reinstatement of conditional valence. In Experiment 2, we confirmed the enhancement of evaluative conditioning due to concurrent measurement of US expectancy in an explicit measure, but did not find corresponding evidence in an implicit measure of conditional valence. In Experiment 3, we replicated the results using a different US expectancy scale and demonstrated that measuring CS valence multiple times throughout conditioning also strengthens conditional valence. Overall, the results suggest that the measurement of US expectancy and CS valence throughout conditioning draws attention to the contingencies and strengthens explicit evaluative learning.
Free Field Construction of D-branes in N=2 Superconformal Minimal Models
Creators: name: Parkhomenko, S. E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The construction of D-branes in N=2 superconformal minimal models, based on free field realization of N=2 super-Virasoro algebra unitary modules is represented.
description: 17 pages, LaTex, some comments and references added
MOESM1 of Comparison of the prevalence rates of HIV infection between men who have sex with men (MSM) and men in the general population in sub-Saharan Africa: a systematic review and meta-analysis
Creators: name: P. Hessou
name: Glele-Ahanhanzo, Yolaine
name: Rheda Adekpedjou
name: Ahouada, Carin
name: R. Johnson
name: Boko, Michel
name: HervÃ© Zomahoun
name: Alary, Michel
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Molecular Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Table S1. Operationalization of the criteria for article selection by reviewers.
On Higher Spin Theory: Strings, BRST, Dimensional Reductions
Creators: name: Bekaert, X.
name: Buchbinder, I. L.
name: Pashnev, A.
name: Tsulaia, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We briefly review some modern developments in higher spin field theory and their links with superstring theory. The analysis is based on various BRST constructions allowing to derive the Lagrangians for massive and massless higher spin fields on flat or constant curvature backgrounds of arbitrary dimensions.
description: 8 pages, contribution to the proceedings of the RTN Workshop in Copenhagen, September 15-20, 2003, published version
Real-time Convolutional Networks for Depth-based Human Pose Estimation
Creators: name: Martínez-González, Angel
name: Villamizar, Michael
name: Canévet, Olivier
name: Odobez, Jean-Marc
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We propose to combine recent Convolutional Neural Networks (CNN) models with depth imaging to obtain a reliable and fast multi-person pose estimation algorithm applicable to Human Robot Interaction (HRI) scenarios. Our hypothesis is that depth images contain less structures and are easier to process than RGB images while keeping the required information for human detection and pose inference, thus allowing the use of simpler networks for the task. Our contributions are threefold. (i) we propose a fast and efficient network based on residual blocks (called RPM) for body landmark localization from depth images; (ii) we created a public dataset DIH comprising more than 170k synthetic images of human bodies with various shapes and viewpoints as well as real (annotated) data for evaluation; (iii) we show that our model trained on synthetic data from scratch can perform well on real data, obtaining similar results to larger models initialized with pre-trained networks. It thus provides a good trade-off between performance and computation. Experiments on real data demonstrate the validity of our approach.
description: Published in IROS 2018
I feel what they say: the effect of social media comments on viewers’ affective reactions toward elevating online videos
Creators: name: Krämer, Nicole C.
name: Neubaum, German
name: Winter, Stephan
name: Schaewitz, Leonie
name: Eimler, Sabrina
name: Oliver, Mary Beth
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: The present study examined whether peer comments on video-sharing platforms can influence the emotional reactions toward entertaining videos. This question is especially relevant with regard to meaningful videos known to increase prosocial motivation and reduce stereotypes. In a 3x3x2 between-subjects online experiment (N = 732), we varied the type of video (unity of humankind, portrayals of human kindness, funny videos) and valence (positive, neutral, negative) as well as internationality (English vs international) of peer reactions. Results demonstrate that peer comments indeed alter the emotional effects of the video clip, with negative comments leading to a reduced sense of elevation. The extent to which viewers socially identified with commenters explained this pattern and intensified associated effects such as an increased universal orientation.
Comparing Geometrical and Delay Radio Emission Heights in Pulsars
Creators: name: Mitra, Dipanjan
name: Li, X. H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use a set of carefully selected published average multifrequency polarimetric observations for six bright cone dominated pulsars and devise a method to combine the multifrequency polarization position angle (PPA) sweep traverses. We demonstrate that the PPA traverse is in excellent agreement with the rotating vector model over this broad frequency range confirming that radio emission emanates from perfectly dipolar field lines. For pulsars with central core emission in our sample, we find the peak of central core component to lag the steepest gradient of the PPA traverse at several frequencies. Also significant frequency evolution of the core width is observed over this frequency range. The above facts strongly suggest: (a) the peak core emission does not lie on the fiducial plane containing the dipole magnetic axis and the rotation axis, and (b) the core emission does not originate from the polar cap surface.
description: Accepted for publication in Astronomy and Astrophysics
Interlinked development of sector coupling and North Sea offshore energy hubs: a look towards 2050
Creators: name: Koivisto, Matti
name: Gea-Bermúdez, Juan
Publisher: name: Zenodo
Year: 2021
Subjects: wind
wind power
wind turbines
floating wind
offshore wind

description: This presentation was part of the SP5 & SP6 WORKSHOP on System Integration – Expert Workshop: “Wind & Power-2-X”.
Hydrodynamics from free-streaming to thermalization and back again
Creators: name: Chattopadhyay, Chandrodoy
name: Heinz, Ulrich W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the evolution of the Knudsen and Reynolds numbers in (0+1)-dimensionally expanding fluids with Bjorken symmetry for systems whose microscopic mean free path rises more quickly with time than usually assumed. This allows us to explore within a simple 1-dimensional model the transition from initially thermalizing to ultimately decoupling dynamics. In all cases studied the dynamics is found to be controlled by hydrodynamic attractors for both the Knudsen and Reynolds numbers whose trajectories undergo characteristic changes as the dynamics changes from thermalizing to decoupling.
description: 7 pages, 6 figures. Added Fig. 6 and associated discussion. This version accepted for publication in Physics Letters B
Incremental Binarization On Recurrent Neural Networks For Single-Channel Source Separation
Creators: name: Kim, Sunwoo
name: Maity, Mrinmoy
name: Kim, Minje
Publisher: name: arXiv
Year: 2019
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper proposes a Bitwise Gated Recurrent Unit (BGRU) network for the single-channel source separation task. Recurrent Neural Networks (RNN) require several sets of weights within its cells, which significantly increases the computational cost compared to the fully-connected networks. To mitigate this increased computation, we focus on the GRU cells and quantize the feedforward procedure with binarized values and bitwise operations. The BGRU network is trained in two stages. The real-valued weights are pretrained and transferred to the bitwise network, which are then incrementally binarized to minimize the potential loss that can occur from a sudden introduction of quantization. As the proposed binarization technique turns only a few randomly chosen parameters into their binary versions, it gives the network training procedure a chance to gently adapt to the partly quantized version of the network. It eventually achieves the full binarization by incrementally increasing the amount of binarization over the iterations. Our experiments show that the proposed BGRU method produces source separation results greater than that of a real-valued fully connected network, with 11-12 dB mean Signal-to-Distortion Ratio (SDR). A fully binarized BGRU still outperforms a Bitwise Neural Network (BNN) by 1-2 dB even with less number of layers.
description: 5 pages, 1 figure, 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2019)
Quantum Field Theory of Open Spin Networks and New Spin Foam Models
Creators: name: Mikovic, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We describe how a spin-foam state sum model can be reformulated as a quantum field theory of spin networks, such that the Feynman diagrams of that field theory are the spin-foam amplitudes. In the case of open spin networks, we obtain a new type of state-sum models, which we call the matter spin foam models. In this type of state-sum models, one labels both the faces and the edges of the dual two-complex for a manifold triangulation with the simple objects from a tensor category. In the case of Lie groups, such a model corresponds to a quantization of a theory whose fields are the principal bundle connection and the sections of the associated vector bundles. We briefly discuss the relevance of the matter spin foam models for quantum gravity and for topological quantum field theories.
description: 13 pages, based on the talk given at the X-th Oporto Meeting on Geometry, Physics and Topology, Porto, September 20-24, 2001
DV and WDVV
Creators: name: Chekhov, L.
name: Marshakov, A.
name: Mironov, A.
name: Vasiliev, D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove that the quasiclassical tau-function of the multi-support solutions to matrix models, proposed recently by Dijkgraaf and Vafa to be related to the Cachazo-Intrilligator-Vafa superpotentials of the N=1 supersymmetric Yang-Mills theories, satisfies the Witten-Dijkgraaf-Verlinde-Verlinde equations.
description: 15 pages, 2 figures
Turbulence Investigations for Wind Turbines and Wakes
Creators: name: Stoevesandt, Bernhard
name: Höning, Leo
name: Yassin, Khaled
name: Ehrich, Sebastian
name: Neunaber, Ingrid
name: Herraez, Ivan
name: Peinke, Joachim
Publisher: name: Zenodo
Year: 2020
Subjects: wind
wind power
wind turbines
floating wind
offshore wind
wakes
turbulence

description: This presentation was part of the EERA JP Wind & SETWind WORKSHOP on Multiscale modelling and validation of wind farm wakes (April 2, 2020).
Emotion and conflict adaptation: the role of phasic arousal and self-relevance
Creators: name: Landman, Lisa L.
name: Van Steenbergen, Henk
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Conflict adaptation reflects the increase in cognitive control after previous conflict between task-relevant and task-irrelevant information. Tonic (sustained) arousal elicited by emotional words embedded in a conflict task has previously been shown to increase conflict adaptation. However, the role of phasic (transient) emotional arousal remains unclear. In Experiment 1 (N = 55), we therefore investigated the effect of phasic arousal using a colour flanker task with negative, positive, and neutral words as stimuli. We hypothesised that phasic arousal elicited in this context will increase conflict adaptation in the subsequent trial. Indeed, when the words were positive or negative as compared to neutral, we observed increased conflict adaptation. In Experiment 2 (N = 54), we examined the role of the self-relevance by presenting words with a self-related pronoun (“my”) or sender-related pronoun (“his”/“her”). We expected that emotional words with high self-relevance would lead to stronger effects of emotional arousal on conflict adaptation. Confirming this hypothesis, results showed that emotional words within a self-related context again increased conflict adaptation, whereas this effect was not observed in the sender-related context. Taken together, these results are the first to show that phasic arousal elicited by emotional words increases conflict adaptation, in particular when these words have high self-relevance.
Simultaneous spectral and spatial modulation for color printing and holography using all-dielectric metasurfaces
Creators: name: Wei, Qunshuo
name: Sain, Basudeb
name: Wang, Yongtian
name: Reineke, Bernhard
name: Li, Xiaowei
name: Huang, Lingling
name: Zentgraf, Thomas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Metasurfaces possess the outstanding ability to tailor phase, amplitude and even spectral responses of light with an unprecedented ultrahigh resolution, thus have attracted significant interests. Here, we propose and experimentally demonstrate a novel meta-device that integrates color printing and computer-generated holograms within a single-layer dielectric metasurface by modulating spectral and spatial responses at subwavelength scale, simultaneously. In our design, such metasurface appears as a microscopic color image under white light illumination, while encrypting two different holographic images that can be projected at the far-field when illuminated with red and green laser beams. We choose amorphous silicon dimers and nanofins as building components and use a modified parallel Gerchberg-Saxton algorithm to obtain multiple sub-holograms with arbitrary spatial shapes for image-indexed arrangements. Such a method can further extend the design freedom of metasurfaces. By exploiting spectral and spatial control at the level of individual pixels, multiple sets of independent information can be introduced into a single-layer device, the additional complexity and enlarged information capacity are promising for novel applications such as information security and anti-counterfeiting.
Why Islamic Banks are not Competitive in Islamic Country: An Empirical Evidence from Pakistan Islamic Banking Sector
Creators: name: Javaria, Kiran
name: Masood, Omar
Publisher: name: European Journal of Islamic Finance
Year: 2020

description: Abstract: Islamic banks are founded on principles that constitute the guidelines governing any Islamic economic or financial dealing. There are almost 180 Islamic financial institutions operating all over the world with 8,000 branches contributing to 71%, or USD 1.72 trillion, of the Islamic finance industry's assets. There has been tremendous growth in the Islamic banking sector especially in Islamic countries with regions like GCC countries and Malaysia leading the way. The situation in the “Islamic Republic of Pakistan” has been quite different where there has been a steady decline in the total number of Islamic banks and their profits. It is important to identify the reason behind decline and failure of Pakistani fully fledged Islamic banking sector. Therefore, this study purpose is to highlight the main reasons for the decline of Islamic banking profitability in Pakistan. According to SBP, Islamic Bank Bulletin 2018, there are currently four fully fledged Islamic banks operating with 12.9% market share of Pakistan's banking industry. This study encompass a period of twelve years (2007 to 2018) which shows a gradual decline in the total number of fully fledged Islamic banks in Pakistan and gradually in the reduction of their profits. This study contributes by analyzing both internal and external factors ((Back specific/Internal, Environmental/Macroeconomic and External Factors) which have led to the decline in the profitability of fully fledged Islamic banks. Study is quantitative in nature and primary data was collected from 508 senior managers of Pakistani Islamic banks. Conclusively, finding reveal that internal/bank specific, external factors have significant and positive impact on Islamic bank’s profitability. The study provides clear, workable policy recommendations to be followed both by the senior banks management as well as the regulatory body (SBP). This study is truly unique as it clearly emphasizes the core weakness within the Islamic banking sector of Pakistan and provides practical recommendations and suggestions to save this declining sector. Keywords: Bank specific factors, Internal factors, Environment specific Factors, External Factors, Profitability, Quantitative Research, Fully Fledged Islamic Banks, Senior Managers, Islamic Bank Bulletin, Primary Data Analysis.
description: European Journal of Islamic Finance, No 15 (2020): EJIF - European Journal of Islamic Finance, 15, 2020
Modification to the power spectrum in the brane world inflation driven by the bulk inflaton
Creators: name: Wang, Bin
name: Xue, Li-Hui
name: Zhang, Xinmin
name: Hwang, W-Y. P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the cosmological perturbations generated in the brane world inflation driven by the bulk inflaton. Different from the model that the inflation is a brane effect, we exhibit the modification of the power spectrum of scalar perturbations due to the existence of the fifth dimension. With the change of the initial vacuum, we investigate the dependence of the correction of the power spectrum on the choice of the vacuum.
description: replaced with the revised version, accepted for publication in PRD
Developing effective water-management institutions in river basins: Case study of Daduru Oya, Sri Lanka
Creators: name: Jinapala, K.
name: Somaratne, P. G.
name: Jinapala, K.
name: Somaratne, P. G.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Community/Rural/Urban Development
subject: Institutional and Behavioral Economics
subject: Resource /Energy Economics and Policy
subject: River basins
subject: Water management
subject: Institutional development
subject: Social aspects
subject: Economic aspects
subject: Poverty
subject: Case studies
subject: Sri Lanka
subject: Deduru Oya

description: In Bruns, B.; Bandaragoda, D. J. (Eds.), Governance for integrated water resources management in a river-basin context: Proceedings of a regional seminar, Bangkok, May, 2002. Colombo, Sri Lanka: International Water Management Institute (IWMI).
Contemporary Responses to The Criticism of Islamic Banks in Malaysia
Creators: name: Chowdhury, Mohammad Abdul Matin
name: Masud, Md. Abdullah Al
name: Atiullah, Md
name: Tanvir, Jayadul Islam
Publisher: name: European Journal of Islamic Finance
Year: 2020

description: The rapid growth of Islamic banks has become a focus of all investors and consumers. Malaysia has put in a lot of effort to develop and gather acceptance from all citizens of the country for Islamic banking. Hence, throughout the sector’s expansion, there have been several critics, such asshariah scholars, investors, and consumers. For instance; a lack of shariah experts in both economics and shariah itself, interest rates as benchmark, similarities with conventional banks etc. As the Malaysian Islamic banking system is growing and expanding, as are its critics. Therefore, the main purpose of this study to provide adequate arguments on the contemporary criticisms and challenges being faced by Islamic banks in Malaysia. This study has adopted a qualitative approach; conducting semi-structured interviews and observations. The findings recognised shariah compliancy, interest rates as a benchmark, and a lack of shariah scholars are the most pertinent current issues for Islamic banks in Malaysia. Through the supports of scholars, policy makers, and consumers, these issues can be resolved over time with Islamic finance literacy. The outcome of this study may benefit policy makers, investors, Muslim consumers, as well as stakeholders of Islamic banking and finance.
description: European Journal of Islamic Finance, No 15 (2020): EJIF - European Journal of Islamic Finance, 15, 2020
Single-Particle Decoherence Can Improve Spin-Squeezing Generated In Collective Dynamics
Creators: name: Tucker, K.
name: Barberena, D.
name: Lewis-Swan, R. J.
name: Thompson, J. K.
name: Restrepo, J. G.
name: Rey, A. M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the generation of spin-squeezing in arrays of long-lived dipoles subject to collective emission, coherent drive, elastic interactions, and spontaneous emission. Counter-intuitively, it is found that the introduction of spontaneous emission leads to an enhancement of the achievable spin-squeezing, relative to that which emerges in the steady-state of the purely collective dynamics for the same model parameters. This behavior is connected to the dynamical self-tuning of the system through a dissipative phase transition that is present in the collective system alone. Our findings will be applicable to next-generation quantum sensors harnessing correlated quantum matter, including cavity-QED and trapped ion systems.
description: 5+4 pages, 3+2 figures
The Tensor Product of Representations of U_q(sl_2) Via Quivers
Creators: name: Savage, Alistair
Publisher: name: arXiv
Year: 2001
Subjects: subject: Algebraic Geometry (math.AG)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Using the tensor product variety introduced by Malkin and Nakajima, the complete structure of the tensor product of a finite number of integrable highest weight modules of U_q(sl_2) is recovered. In particular, the elementary basis, Lusztig's canonical basis, and the basis adapted to the decomposition of the tensor product into simple modules are all exhibited as distiguished elements of certain spaces of invariant functions on the tensor product variety. For the latter two bases, these distinguished elements are closely related to the irreducible components of the tensor product variety. The space of intertwiners is also interpreted geometrically.
description: 33 pages, 7 figures. v2: Ground field changed and some definitions modified. v3&4: Some minor errors corrected
REDUCTION IN REVENUE VOLATILITY IN MAIZE PRODUCTION APPLYING THE INDIRECT-INDEX INSURANCE
Creators: name: Markovic, Todor
name: Ivanović, Sanjin
name: Todorović, Saša
name: Markovic, Todor
name: Ivanović, Sanjin
name: Todorović, Saša
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Financial Economics
subject: Risk and Uncertainty
subject: indirect index insurance
subject: maize
subject: revenue
subject: volatility
subject: family farms

description: This paper is aimed at providing the basic theoretical postulates of indirect-index insurance and by its application at quantifying the effect of the reduction in risk using a stochastic simulation. The paper uses data on maize yield gathered from family farm in the central part of Srem, and weather data were acquired from the nearest referential meteorological station. For the purpose of achieving a stated aim, two situations were analysed: maize production value by using the indirect-index insurance and by using no indirect-index insurance. In the case of applying this type of insurance, a farmer can decrease the risk by 8,816 RSD/ha (r=1.0), 4,116 RSD/ha if the correlation coefficient is 0.8, that is 2,598 RSD/ha (r=0.6). Therefore, it is possible to conclude that there is a significant effect of the reduction in risk by applying indirect-index insurance.
description: Original scientific paper
Introducing a Digital Wind Buoy to the Resource Assessment for Floating Wind
Creators: name: J. Gottschall
name: M. Dörenkämper
name: I. Bastigkeit
name: G. Wolken-Möhlmann
name: H. Rubio
name: P. Meyer
Publisher: name: Zenodo
Year: 2021
Subjects: wind
wind power
wind turbines
floating wind
offshore wind

description: This presentation was part of the SP3 WORKSHOP on Science of air-sea interaction new challenges for floating wind.
Tunable Topological Energy Bands in 2D Dialkali-Metal Monoxides
Creators: name: Hua, Chenqiang
name: Li, Si
name: Xu, Zhu-An
name: Zheng, Yi
name: Yang, Shengyuan A.
name: Lu, Yunhao
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: 2D materials with nontrivial energy bands are highly desirable for exploring various topological phases of matter, as low dimensionality opens unprecedented opportunities for manipulating the quantum states. Here, it is reported that monolayer (ML) dialkali-metal monoxides, in the well-known 2H-MoS$_2$ type lattice, host multiple symmetry-protected topological phases with emergent fermions, which can be effectively tuned by strain engineering. Based on first-principles calculations, it is found that in the equilibrium state, ML Na$_2$O is a 2D double Weyl semimetal, while ML K$_2$O is a 2D pseudospin-1 metal. These exotic topological states exhibit a range of fascinating effects, including universal optical absorbance, super Klein tunneling, and super collimation effect. By introducing biaxial or uniaxial strain, a series of quantum phase transitions between 2D double Weyl semimetal, 2D Dirac semimetal, 2D pseudospin-1 metal, and semiconductor phases can be realized. The results suggest monolayer dialkali-metal monoxides as a promising platform to explore fascinating physical phenomena associated with novel 2D emergent fermions.
description: 7 pages, 4 figures
Drastic facilitation of the onset of global chaos in a periodically driven Hamiltonian system due to an extremum in the dependence of eigenfrequency on energy
Creators: name: Soskin, S. M.
name: Yevtushenko, O. M.
name: Mannella, R.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Chirikov resonance-overlap criterion predicts the onset of global chaos if nonlinear resonances overlap in energy, which is conventionally assumed to require a non-small magnitude of perturbation. We show that, for a time-periodic perturbation, the onset of global chaos may occur at unusually {\it small} magnitudes of perturbation if the unperturbed system possesses more than one separatrix. The relevant scenario is the combination of the overlap in the phase space between resonances of the same order and their overlap in energy with chaotic layers associated with separatrices of the unperturbed system. One of the most important manifestations of this effect is a drastic increase of the energy range involved into the unbounded chaotic transport in spatially periodic system driven by a rather {\it weak} time-periodic force, provided the driving frequency approaches the extremal eigenfrequency or its harmonics. We develop the asymptotic theory and verify it in simulations.
description: 5 pages, 4 figures, LaTeX, to appear PRL
CRUDE MILK INDICATIVE PRICES: MECHANISM OF DEFINING AND APPLICATION
Creators: name: Shibaykin, Vladimir
name: Dolbilova, Ekaterina
name: Shibaykin, Vladimir
name: Dolbilova, Ekaterina
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Livestock Production/Industries
subject: Production Economics
subject: indication price
subject: crude milk
subject: price inter-branch parity
subject: Saratov region
subject: methodical approach
subject: forecast

description: In the article the results of the analysis of the environment of purchase prices of crude milk in Russia and the Saratov region, including their long-term dynamics of seasonal fluctuations are presented. Author's calculations prove an exponential rise in prices and its negative influence on consumer prices of dairy production. Importance of monitoring of inter-branch parity of the agricultural and industrial prices is emphasized. Experience of use of indicative pricing within agreements between national associations of producers and milk processers is generalized. Special attention is given to methodical questions of justification of indication prices. The improvement guidelines «Temporary methodical recommendations on the organization of monitoring of the current profitability, indication prices and production costs of main types of agricultural production» are formulated. The offered author's approach is approved on materials of the Saratov region. The corridor of the minimum and ceiling indication prices for 2013 is reasonable. The conclusion is drawn on the need of reconstruction of the regional Union of producers and milk processers Saratov-Molprom.
description: Original scientific paper
Frequency-Domain Modeling of OFDM Transmission with Insufficient Cyclic Prefix using Toeplitz Matrices
Creators: name: Cisek, Grzegorz
name: Zieliński, Tomasz P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Signal Processing (eess.SP)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: A novel mathematical framework is proposed to model Intersymbol Interference (ISI) phenomenon in wireless communication systems based on Orthogonal Frequency Division Multiplexing (OFDM) with or without cyclic prefix. The framework is based on a new formula to calculate the Fast Fourier Transform (FFT) of a triangular Toeplitz matrix, which is derived and proven in this paper. It is shown that distortion inducted by the ISI from a given subcarrier is the most significant for the closest subcarriers and the contribution decays as the distance between subcarriers grows. According to numerical experiments, knowledge of ISI coefficients concentrated around the diagonal of Channel Frequency Response (CFR) matrix improves the receiver's error floor significantly. The potential use of the framework for real-time frequency domain channel simulation was also investigated and demonstrated to be more efficient than conventional time domain Tapped Delay Line (TDL) model when a number of simulated users is high.
description: Conference: IEEE VTC-Fall 2018, 5 pages, 3 figures
Cross cutting thematics of the Safe-by-Design NMBP-15 projects
Creators: name: Mays, Claire
name: Hardy, Sean
name: Melandri, Stefania
name: Resch, Susanne
name: Serrano, Beatriz Alfaro
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Safety-by-Design
subject: Sustainability-by-Design
subject: RRI - Responsible Research and Innovation
subject: Industrial Case studies
subject: Methodological approaches
subject: Nanotechnology
subject: FOS: Nanotechnology
subject: Nanomaterials

description: Joint poster of the four EU H2020 NMBP-15 projects on their cross-cutting thematics. The four projects offer coverage across these themes: Regulatory and governance issues for Safe-by-Design in nanotech from safety to sustainability ELSA and Responsible Research and Innovation are served by our projects Industry case applications for realism and adaptability Methodological approaches and output platforms/tools of the four projects The poser was presented in the Joint Booth (Booth no.16) of the four NMBP-15 projects during the EuroNanoForum 2021. Acknowledgement: ASINA (Grant agreement no. 862444), SABYDOMA (Grant agreement no. 862296), SAbyNA (Grant Agreement no. 862419) and SbD4Nano (Grant Agreement no. 862195) have received funding from the European Union’s Horizon 2020 research and innovation programme
Effect of the unpolarized spin state in spin-correlation measurement of two protons produced in the 12C(d,2He) reaction
Creators: name: Hamieh, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this note we discuss the effect of the unpolarized state in the spin-correlation measurement of the $^1S_0$ two-proton state produced in 12C(d,2He) reaction at the KVI, Groningen. We show that in the presence of the unpolarized state the maximal violation of the CHSH-Bell inequality is lower than the classical limit if the purity of the state is less than $ \sim \verb+70%+$. In particular, for the KVI experiment the violation of the CHSH-Bell inequality should be corrected by a factor $\sim\verb+10%+$ from the pure $^1S_0$ state.
description: 6 pages, to appear in J. Phys. A
PROBLEMS OF THE DEINDUSTRIALIZATION OF THE SERBIAN ECONOMY
Creators: name: Stevanović, Simo
name: Milanović, Milan
name: Milačić, Srećko
name: Stevanović, Simo
name: Milanović, Milan
name: Milačić, Srećko
Publisher: name: Unknown
Year: 2013
Subjects: subject: Community/Rural/Urban Development
subject: Industrial Organization
subject: Production Economics
subject: industry
subject: deindustrialization
subject: reindustrialization
subject: Serbian economy

description: The paper analyzes the process of the industrialization, i.e. deindustrialization of the Serbian economy in the time period after the Second World War until today. In the observed period, two contrary processes have been recorded. Until the beginning of the 1980s, the process of the accelerated industrialization of the economy was taking place. In the structure of the GDP, industry increased its share to around 44%. At the beginning of the 1990s, East European socialist countries and Serbia commenced the process of the transition of the economy and the economic system. In the starting phase of transition, all countries recorded a negative rate of their economic growth, a fall in the GDP and a reduction in the share of industry in the structure of GDP of the economy. Differently from the countries in which the negative tendencies of the economic growth were stopped in the mid-1990s, and which became the EU member countries in 2004 and 2007, the negative trend of the economic growth and the deindustrialization of the economy in Serbia continued during the first decade of the 21st century. In the previous twenty-year period, the GDP of the Serbian economy was reduced to 60% of the level of the 1990s. The 15.9% share of industry in the structure of the economy in 2009 is lower than the share of Yugoslavia’s industry immediately after the Second World War (around 20%).
description: Original scientific paper
Invariants of Boundary Link Cobordism
Creators: name: Sheiham, Desmond
Publisher: name: arXiv
Year: 2001
Subjects: subject: Algebraic Topology (math.AT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 18F25;57Q45;57Q60;16G20

description: An n-dimensional μ-component boundary link is a codimension 2 embedding of spheres L=\bigsqcup_μS^n \subset S^{n+2} such that there exist μdisjoint oriented embedded (n+1)-manifolds which span the components of L. An F_μ-link is a boundary link together with a cobordism class of such spanning manifolds. The F_μ-link cobordism group C_n(F_μ) is known to be trivial when n is even but not finitely generated when n is odd. Our main result is an algorithm to decide whether two odd-dimensional F_μ-links represent the same cobordism class in C_{2q-1}(F_μ) assuming q>1. We proceed to compute the isomorphism class of C_{2q-1}(F_μ), generalizing Levine's computation of the knot cobordism group C_{2q-1}(F_1). Our starting point is the algebraic formulation of Levine, Ko and Mio who identify C_{2q-1}(F_μ) with a surgery obstruction group, the Witt group G^{(-1)^q,μ}(Z) of μ-component Seifert matrices. We obtain a complete set of torsion-free invariants by passing from integer coefficients to complex coefficients and by applying the algebraic machinery of Quebbemann, Scharlau and Schulte. Signatures correspond to `algebraically integral' simple self-dual representations of a certain quiver (directed graph with loops). These representations, in turn, correspond to algebraic integers on an infinite disjoint union of real affine varieties. To distinguish torsion classes, we consider rational coefficients in place of complex coefficients, expressing G^{(-1)^q,μ}(Q) as an infinite direct sum of Witt groups of finite-dimensional division Q-algebras with involution. Numerical invariants of such Witt groups are available in the literature.
description: 120 pages LaTeX. My PhD thesis
Ice-rule made manifold: phase transitions, topological defects and manifold restoration in two-dimensional artificial spin systems
Creators: name: Macauley, Gavin M.
name: Paterson, Gary W.
name: Li, Yue
name: Macêdo, Rair
name: McVitie, Stephen
name: Stamps, Robert L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Artificial spin ices are arrays of correlated nano-scale magnetic islands that prove an excellent playground in which to study the role of topology in critical phenomena. Here, we investigate a continuum of spin ice geometries, parameterised by rotation of the islands. In doing so, we morph from the classic square ice to the recently studied pinwheel geometry, with the rotation angle acting as a proxy for controlling inter-island interactions. We experimentally observe a change in ground state magnetic order from antiferromagnetic to ferromagnetic across this class of geometries using Lorentz transmission electron microscopy on thermally annealed cobalt arrays. The change in ordering leads to an apparent change in the nature of the defects supported: from one-dimensional strings in the antiferromagnetic phase to two-dimensional vortex-like structures in the ferromagnetic one, consistent with the scaling predicted by the Kibble-Zurek mechanism. Our results show how magnetic order in artificial spin ices can be tuned by changes in geometry so that a truly frustrated ice-rule phase is possible in two-dimensional systems. Furthermore, we demonstrate this system as a testbed to investigate out-of-equilibrium dynamics across phases.
description: 18 pages, 5 figures
Understanding Childhood Obesity (Group Model Building Project)
Creators: name: Allender, Steven
name: Bolton, Kristy
name: Brown, Andrew
name: Fraser, Penny
Publisher: name: The University of Auckland
Year: 2019
Subjects: subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences

description: This manual was developed by the core modeling team of Steve Allender, Kristy Bolton, Andrew Brown, and Penny Fraser from the Global Obesity Centre at Deakin University. It was used as an exemplar for how to run GMB sessions with secondary school students in NZ as part of a PhD thesis (Erica D’Souza: e.dsouza@auckland.ac.nz)
ECONOMIC ANALYSIS OF THE BAN ON FOREIGNERS ACQUIRING PROPERTY RIGHTS ON AGRICULTURAL LAND IN SERBIA
Creators: name: Baturan, Luka
name: Baturan, Luka
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agricultural and Food Policy
subject: Land Economics/Use
subject: agricultural land
subject: Law on Agricultural Land
subject: foreigners
subject: property right

description: In Serbia it is prescribed by The Law on Agricultural Land that foreign legal or natural persons could not become owners of agricultural land. The aim of this paper is to show that such a norm creates an economic environment where an optimal allocation of agricultural land as a production factor could not be achieved. The cost - benefit analysis shows that main gainers are Serbian producers and buyers of land who are able to realize a monopoly profit, whereas sellers of agricultural land are at loss, getting a lower economic rent, as well as foreign buyers. A total loss of domestic sellers only is bigger than a total profit of buyers. In the end, it is being pointed to a relativity of the ban, in the sense of a possibility to easily get past the ban through provisions of The Law on Foreign Trade. The conclusion points out that an eventual suspension of the ban would stimulate efficiency of Serbian economy and an increase in the net welfare.
description: Review Article
Mediation Role of Perceived Benefit in the Relationship between Perceived Government Support, Religiosity, Awareness and the Acceptance of Islamic Microfinancing in Nigeria
Creators: name: Mas’ud, Abdulsalam
name: Shittu, Isah
name: Umar, Umar Bello
Publisher: name: European Journal of Islamic Finance
Year: 2020

description: Social Exchange Theory highlights the possible mediating role perceived benefit in social and economic relationships, however, extent literature falls short is validating such theoretical insights in the context of Islamic microfinance. Following this theoretical insights the mediating role of perceived benefit on the relationship between perceived government support, religiosity, awareness and intention to accept Islamic micro-financing was examined. Quantitative research design through data collected from smallholder farmers in Jigawa state was employed; the data was analyzed using PLS-SEM. The finding revealed that perceived benefit mediates the relationship between perceived government support, religiosity, awareness and intention to accept Islamic micro-financing. It implied that perceiving the benefit is one of the mechanisms through which government support, religiosity and awareness influence intention to accept Islamic micro-financing. The study expands the understanding of TPB through the support of SET to explain the mediating effects of perceived benefits in the context of Islamic micro-financing. Thus, it will benefit policymakers in understanding that perceived benefit of Islamic micro-financing is a key to its acceptance, hence, the need for awareness campaigns, support services and religious preaching to that end. Implementing the finding will not only solve problem of access to finance among the smallholder farmers but also ease life through employment generation and poverty eradication. To the researchers’ knowledge, this work could be first to examine the mediating role of perceived benefit in the context of Islamic microfinance among the smallholder farmers with inferences from Social Exchange Theory
description: European Journal of Islamic Finance, No 15 (2020): EJIF - European Journal of Islamic Finance, 15, 2020
ANALYSIS OF GENDER EQUALITY AND EMPLOYMENT IN THE VRBAS MUNICIPALITY
Creators: name: Bošković, Olgica
name: Otović, Slavica
name: Bošković, Olgica
name: Otović, Slavica
Publisher: name: Unknown
Year: 2013
Subjects: subject: Labor and Human Capital
subject: transitional changes
subject: employment
subject: gender equality
subject: rural development
subject: agro-tourism

description: Transitional changes in Serbia have contributed to drastic rise in unemployment rate, significantly impacting women in rural areas. The constant rise of unemployment has increased the gap between rich and poor, causing many families to file for bankruptcy. Regular changes in the market place have enabled flexibility within operational and strategic planning for business. Solving unemployment problem should start at municipal level, where understanding of statistical analysis as well as considering non-statistical information is crucial. In order to measure results from the gathered information and create guidelines, involvement of professional services, advisory bodies and committees is needed. The potential development of Vrbas municipality as well as positive economic outcome on global level starts with the fertile soil, agricultural sector, agro-tourism and rural development.
description: Review Article