cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Localization in Unstructured Environments: Towards Autonomous Robots in Forests with Delaunay Triangulation
Creators: name: Li, Qingqing
name: Nevalainen, Paavo
name: Queralta, Jorge Peña
name: Heikkonen, Jukka
name: Westerlund, Tomi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Autonomous harvesting and transportation is a long-term goal of the forest industry. One of the main challenges is the accurate localization of both vehicles and trees in a forest. Forests are unstructured environments where it is difficult to find a group of significant landmarks for current fast feature-based place recognition algorithms. This paper proposes a novel approach where local observations are matched to a general tree map using the Delaunay triangularization as the representation format. Instead of point cloud based matching methods, we utilize a topology-based method. First, tree trunk positions are registered at a prior run done by a forest harvester. Second, the resulting map is Delaunay triangularized. Third, a local submap of the autonomous robot is registered, triangularized and matched using triangular similarity maximization to estimate the position of the robot. We test our method on a dataset accumulated from a forestry site at Lieksa, Finland. A total length of 2100\,m of harvester path was recorded by an industrial harvester with a 3D laser scanner and a geolocation unit fixed to the frame. Our experiments show a 12\,cm s.t.d. in the location accuracy and with real-time data processing for speeds not exceeding 0.5\,m/s. The accuracy and speed limit is realistic during forest operations.
The early reionization with the primordial magnetic fields
Creators: name: Tashiro, Hiroyuki
name: Sugiyama, Naoshi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The early reionization of the intergalactic medium, which is favored from the WMAP temperature-polarization cross-correlations, contests the validity of the standard scenario of structure formation in the cold dark matter cosmogony. It is difficult to achieve early enough star formation without rather extreme assumptions such as very high escape fraction of ionizing photons from proto-galaxies or a top-heavy initial mass function. Here we propose an alternative scenario that is additional fluctuations on small scales induced by primordial magnetic fields trigger the early structure formation. We found that ionizing photons from Population III stars formed in dark haloes can easily reionize the universe by $z \simeq 15$ if the strength of primordial magnetic fields is larger than $0.6 \times 10^{-9}$Gauss.
description: 8 pages, 5 figures. accepted for publication in MNRAS
A photonic quantum information interface
Creators: name: Tanzilli, Sebastien
name: Tittel, Wolfgang
name: Halder, Matthaeus
name: Alibart, Olivier
name: Baldi, Pascal
name: Gisin, Nicolas
name: Zbinden, Hugo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum communication is the art of transferring quantum states, or quantum bits of information (qubits), from one place to another. On the fundamental side, this allows one to distribute entanglement and demonstrate quantum nonlocality over significant distances. On the more applied side, quantum cryptography offers, for the first time in human history, a provably secure way to establish a confidential key between distant partners. Photons represent the natural flying qubit carriers for quantum communication, and the presence of telecom optical fibres makes the wavelengths of 1310 and 1550 nm particulary suitable for distribution over long distances. However, to store and process quantum information, qubits could be encoded into alkaline atoms that absorb and emit at around 800 nm wavelength. Hence, future quantum information networks made of telecom channels and alkaline memories will demand interfaces able to achieve qubit transfers between these useful wavelengths while preserving quantum coherence and entanglement. Here we report on a qubit transfer between photons at 1310 and 710 nm via a nonlinear up-conversion process with a success probability greater than 5%. In the event of a successful qubit transfer, we observe strong two-photon interference between the 710 nm photon and a third photon at 1550 nm, initially entangled with the 1310 nm photon, although they never directly interacted. The corresponding fidelity is higher than 98%.
description: 7 pages, 3 figures
Additional file 4 of Sleep and BMI in South African urban and rural, high and low-income preschool children
Creators: name: Rae, Dale E.
name: Tomaz, Simone A.
name: Jones, Rachel A.
name: Hinkley, Trina
name: Twine, Rhian
name: Kahn, Kathleen
name: Norris, Shane A.
name: Draper, Catherine E.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 4: Table A1. Ordered logistic regression models associating BMI z-score quartile (dependent variable) with average bedtime (Model 3), wake-up time (Model 4) and nap duration (Model 5).
A quantum simulation of dissociative ionization of $H_2^+$ in full dimensionality with time dependent surface flux method
Creators: name: Zhu, Jinzhen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The dissociative ionization of $H_2^+$ in a linearly polarized, 400 nm laser pulse is simulated by solving a three-particle time-dependent Schrödinger equation in full dimensionality without using any data from quantum chemistry computation. The joint energy spectrum (JES) is computed using a time-dependent surface flux (tSurff) method, the details of which are given. The calculated ground energy is -0.597 atomic units and internuclear distance is 1.997 atomic units if the kinetic energy term of protons is excluded, consistent with the reported precise values from quantum chemistry computation. If the kinetic term of the protons is included, the ground energy is -0.592 atomic units with an internuclear distance 2.05 atomic units. Energy sharing is observed in JES and we find peak of the JES with respect to nuclear kinetic energy release (KER) is within $2\sim4$ eV, which is different from the previous two dimensional computations (over 10 eV), but is close to the reported experimental values. The projected energy distribution on azimuth angles shows that the electron and the protons tend to dissociate in the direction of polarization of the laser pulse.
Additional file 1 of Size-dependent activity of silver nanoparticles on the morphological switch and biofilm formation of opportunistic pathogenic yeasts
Creators: name: Szerencsés, Bettina
name: Igaz, Nóra
name: Tóbiás, Ákos
name: Zsombor Prucsi
name: Rónavári, Andrea
name: Bélteky, Péter
name: Madarász, Dániel
name: Papp, Csaba
name: Makra, Ildikó
name: Vágvölgyi, Csaba
name: Kónya, Zoltán
name: Pfeiffer, Ilona
name: Kiricsi, Mónika
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
The optical calcium frequency standards of PTB and NIST
Creators: name: Sterr, U.
name: Degenhardt, C.
name: Stoehr, H.
name: Lisdat, Ch.
name: Schnatz, H.
name: Helmcke, J.
name: Riehle, F.
name: Wilpers, G.
name: Oates, Ch.
name: Hollberg, L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We describe the current status of the Ca optical frequency standards with laser-cooled neutral atoms realized in two different laboratories for the purpose of developing a possible future optical atomic clock. Frequency measurements performed at the Physikalisch-Technische Bundesanstalt (PTB) and the National Institute of Standards and Technology (NIST) make the frequency of the clock transition of 40Ca one of the best known optical frequencies (relative uncertainty 1.2e-14) and the measurements of this frequency in both laboratories agree to well within their respective uncertainties. Prospects for improvement by orders of magnitude in the relative uncertainty of the standard look feasible.
description: 13 pages, 11 figures, to appear in Comptes Rendus Physique
In book: I International Congress Transversal Tourism & LandscapePublisher: UMA editorial. Universidad de Málaga Instituto IHTT
Creators: name: Martos, Juan Carlos Maroto
name: Najarro Martín, Ulises
name: Navarrete, Aida Pinos
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 440601
subject: Cultural geography
classificationCode: 440608
subject: Recreation, leisure and tourism geography

description: This research presents the importance of Almuñécar as tourist capital of Costa Tropical (Costa de Granada, Spain), briefly collecting some milestones of the evolution of its tourism. It shows existence of resources and heritage assets that are insufficiently known and exploited, despite being at base of the emergence of Almuñécar as an important city in the Phoenician trade routes of the Mediterranean. The Almuñécar´s phoenician remains, although they have been scientifically studied since the middle of 20th century, are inexplicably still not being promoted culturally as would be desirable and neither are they have not been adequate to be visited. A route is designed to visit its old location and it is suggested to disseminate them through training of pecialized guides, so political leaders are encouraged to insert them into the Phenicia Mediterranean Cultural Route, as astrategy to help return the city of Almuñécar, the importtopic bance it had in antiquity, through improvement of its position in international tourism. Keywords: Phoenicians; Almuñécar; cultural tourism; international cultural itinerary, cultural tour, local development.
Spontaneous dissociation of long-range Feshbach molecules
Creators: name: Koehler, Thorsten
name: Tiesinga, Eite
name: Julienne, Paul S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the spontaneous dissociation of diatomic molecules produced in cold atomic gases via magnetically tunable Feshbach resonances. We provide a universal formula for the lifetime of these molecules that relates their decay to the scattering length and the loss rate constant for inelastic spin relaxation. Our universal treatment as well as our exact coupled channels calculations for $^{85}$Rb dimers predict a suppression of the decay over several orders of magnitude when the scattering length is increased. Our predictions are in good agreement with recent measurements of the lifetime of $^{85}$Rb$_2$.
description: 4 pages, 2 figures (final version)
VOYAGA YETMAGANLAR O'RTASIDA GIYOHVANDLIK VOSITALARI, PSIXOTROP MODDALAR VA AQL-IRODA FAOLIYATIGA TA'SIR ETUVCHI BOSHQA MODDALARNI ISTE'MOL ETISHNI OLDINI OLISH BORASIDA AYRIM MULOHAZALAR
Creators: name: RASHIDOV, RUSTAM
Publisher: name: Zenodo
Year: 2025

description: So‘nggi yillarda mamlakatimizda giyohvandlik vositalari, ularning analoglari, psixotrop moddalar va kuchli ta’sir qiluvchi moddalarning qonunga xilof ravishda muomalada bo‘lishiga qarshi kurashish borasida keng qamrovli tashkiliy-amaliy ishlar olib borilmoqda.
A Bethe-Salpeter study with the -enhanced effective QCD coupling
Creators: name: Kekez, Dalibor
name: Klabucar, Dubravko
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Dyson-Schwinger equations provide a prominent approach to physics of strong interactions. To reproduce the hadronic phenomenology well, the Dyson-Schwinger approach in the rainbow-ladder approximation must employ an effective interaction between quarks which is fairly strong at intermediate (Q^2 approx. 0.5 GeV^2) spacelike transferred momenta. We have recently proposed that such an interaction may originate from the dimension 2 gluon condensate which has recently attracted much attention, and showed that the resulting effective running coupling leads to the sufficiently strong dynamical chiral symmetry breaking and successful phenomenology at least in the light sector of pseudoscalar mesons. In the present paper, we give a more detailed investigation of the parameter dependence of these results.
description: 20 pages, 5 figures, Prepared for 2nd Conference on Nuclear and Particle Physics with CEBAF at Jlab (NAPP 2003), Dubrovnik, Croatia, 26-31 May 2003
Holonomies of Intersecting Branes
Creators: name: Kalkkinen, Jussi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the geometry of string and M-theory gauge fields in Deligne cohomology. In particular, we show how requiring string structure (or loop space Spin-C structure) on the five-brane leads to topological conditions on the flux in the relative Deligne cohomology of the bulk - brain pair.
description: 8 pages, LaTeX, talk given in the RTN Workshop "The quantum structure of spacetime and the geometric nature of fundamental interactions," (Kolymbari, Greece, September 2004)
The Role of Forests as Carbon Sinks: Land-Use and Carbon Accounting
Creators: name: Duarte, Clara Costa
name: Cunha-E-Sa, Maria A.
name: Rosa, Renato
name: Duarte, Clara Costa
name: Cunha-E-Sa, Maria A.
name: Rosa, Renato
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Land Allocation Model
subject: Forest Vintages
subject: Carbon Sequestration
subject: Carbon Accounting
subject: Optimal Rotation
subject: Transition/steady-state

description: The use of forests as carbon sinks is examined by introducing carbon sequestration benefits’ accounting in a multi-vintage land allocation model. Following the IPCC, three carbon accounting methods are considered. We compare the results in each case with those without carbon sequestration, as well as the performances of the ton-year and the average methods (second-best) to the carbon flow (first-best) concerning optimal land allocation between forestry and alternative uses, total carbon sequestered, timber production and social welfare. A full proof of long-run optimality of steady state forest is provided. Numerical simulations are performed and results discussed illustrating the setup’s potential.
DarkneTZ: Towards Model Privacy at the Edge using Trusted Execution Environments
Creators: name: Mo, Fan
name: Shamsabadi, Ali Shahin
name: Katevas, Kleomenis
name: Demetriou, Soteris
name: Leontiadis, Ilias
name: Cavallaro, Andrea
name: Haddadi, Hamed
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We present DarkneTZ, a framework that uses an edge device's Trusted Execution Environment (TEE) in conjunction with model partitioning to limit the attack surface against Deep Neural Networks (DNNs). Increasingly, edge devices (smartphones and consumer IoT devices) are equipped with pre-trained DNNs for a variety of applications. This trend comes with privacy risks as models can leak information about their training data through effective membership inference attacks (MIAs). We evaluate the performance of DarkneTZ, including CPU execution time, memory usage, and accurate power consumption, using two small and six large image classification models. Due to the limited memory of the edge device's TEE, we partition model layers into more sensitive layers (to be executed inside the device TEE), and a set of layers to be executed in the untrusted part of the operating system. Our results show that even if a single layer is hidden, we can provide reliable model privacy and defend against state of the art MIAs, with only 3% performance overhead. When fully utilizing the TEE, DarkneTZ provides model protections with up to 10% overhead.
description: 13 pages, 8 figures, accepted to ACM MobiSys 2020
Trade Complexity and Productivity
Creators: name: Altomonte, Carlo
name: Bekes, Gabor
name: Altomonte, Carlo
name: Bekes, Gabor
Publisher: name: Unknown
Year: 2009
Subjects: subject: International Relations/Trade
subject: Trade Openness
subject: Firms' Heterogeneity
subject: Productivity

description: We exploit a panel dataset of Hungarian firms merged with product-level trade data for the period 1992-2003 to investigate the relation between firms' trading activities (importing, exporting or both) and productivity. We find important self-selection effects of the most productive firms induced by the existence of heterogeneous sunk costs of trade, for both importers and exporters. We relate these sunk costs of trade to the relationship-specific nature of the trade activities, entailing a certain degree of technological and organizational complexity. We also show that, to the extent that imports and exports are correlated within firms, failing to control for the importing activity leads to overstated average productivity premia of exporters.
Additional file 9 of Reducing the nicotine content of tobacco by grafting with eggplant
Creators: name: Mengjuan Ren
name: Mengyue Zhang
name: Huijuan Yang
name: Shi, Hongzhi
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: Plant Biology

description: Additional file 9: Table S1. Effect of tobacco and eggplant grafting on amino acids in fresh tobacco. Table S2. Effect of tobacco and eggplant grafting on amino acids in cured tobacco. Table S3. Effect of tobacco and eggplant grafting on the content of TSNAs in flue-cured tobacco.
Cultural Diversity and Economic Performance: Evidence from European Regions
Creators: name: Bellini, Elena
name: Ottaviano, Gianmarco I.P.
name: Pinelli, Dino
name: Prarolo, Giovanni
name: Bellini, Elena
name: Ottaviano, Gianmarco I.P.
name: Pinelli, Dino
name: Prarolo, Giovanni
Publisher: name: Unknown
Year: 2009
Subjects: subject: Community/Rural/Urban Development
subject: Cultural Diversity
subject: Economic Performance
subject: Productivity
subject: Europe

description: We investigate the relationship between diversity and productivity in Europe using an original dataset covering the NUTS 3 regions of 12 countries of the EU15 (Austria, Belgium, Denmark, France, former Western Germany, Ireland, Italy, the Netherlands, Portugal, Spain, Sweden and the United Kingdom). In so doing, we follow the empirical methodology developed by Ottaviano and Peri (2006a) in the case of US cities. The main idea is that, as cultural diversity may affect both production and consumption through positive or negative externalities, the joint estimation of price and income equations is needed to identify the dominant effect. Based on this methodology, we find that diversity is positively correlated with productivity. Moreover, we find evidence that causation runs from the former to the latter. These results for EU regions are broadly consistent with those found by Ottaviano and Peri for US cities.
Informed attribution of flood changes to decadal variation of atmospheric, catchment and river drivers in Upper Austria
Creators: name: Bertola, Miriam
name: Viglione, Alberto
name: Blöschl, Günter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Flood changes may be attributed to drivers of change that belong to three main classes: atmospheric, catchment and river system drivers. In this work, we propose a data-based attribution approach for selecting which driver best relates to variations in time of the flood frequency curve. The flood peaks are assumed to follow a Gumbel distribution, whose location parameter changes in time as a function of the decadal variations of one of the following alternative covariates: annual and extreme precipitation for different durations, an agricultural land-use intensification index, and reservoir construction in the catchment, quantified by an index. The parameters of this attribution model are estimated by Bayesian inference. Prior information on one of these parameters, the elasticity of flood peaks to the respective driver, is taken from the existing literature to increase the robustness of the method to spurious correlations between flood and covariate time series. Therefore, the attribution model is informed in two ways: by the use of covariates, representing the drivers of change, and by the priors, representing the hydrological understanding of how these covariates influence floods. The Watanabe-Akaike information criterion is used to compare models involving alternative covariates. We apply the approach to 96 catchments in Upper Austria, where positive flood peak trends have been observed in the past 50 years. Results show that, in Upper Austria, one or seven day extreme precipitation is usually a better covariate for variations of the flood frequency curve than precipitation at longer time scales. Agricultural land-use intensification rarely is the best covariate, and the reservoir index never is, suggesting that catchment and river drivers are less important than atmospheric ones.
description: Published in Journal of Hydrology
Paul Valéry: per un'estetica della composizione
Creators: name: Zaccarello, Benedetta
Publisher: name: Aisthesis. Pratiche, linguaggi e saperi dell’estetico
Year: 2012

description: Valéry’s conceptions of mind, literature and even philosophy often stress the importance of an effort against heterogeneity that should be led in the name of what the author himself calls pureté. On the other hand, the theories that Valéry develops about composition - which is intended both as an aesthetic and a theoretical concept - show the importance of complexity in his representation of the esprit and allows to compare Valéry’s descriptions of the self with the way he represents creative process and even draws the structure of his own works.
description: Aisthesis. Pratiche, linguaggi e saperi dell’estetico, Vol. 5 No. 1 (2012): Paul Valéry: strategie del sensibile
A Decade of Piezoresponse Force Microscopy: Progress, Challenges and Opportunities
Creators: name: Kalinin, Sergei V.
name: Rar, Andrei
name: Jesse, Stephen
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Coupling between electrical and mechanical phenomena is a near-universal characteristic of inorganic and biological systems alike, with examples ranging from ferroelectric perovskites to electromotor proteins in cellular membranes. Understanding electromechanical functionality in materials such as ferroelectric nanocrystals, thin films, relaxor ferroelectrics, and biosystems requires probing these properties on the nanometer level of individual grain, domain, or protein fibril. In the last decade, Piezoresponse Force Microscopy (PFM) was established a powerful tool for nanoscale imaging, spectroscopy, and manipulation of ferroelectric and piezoelectric materials. Here, we present principles and recent advances in PFM, including vector and frequency dependent imaging of piezoelectric materials, briefly review applications for ferroelectric materials, discuss prospects for electromechanical imaging of local crystallographic and molecular orientations and disorder, and summarize future challenges and opportunities for PFM emerging in the second decade since its invention.
description: 76 pages, 18 figures, This work has been submitted to the IEEE for possible publication
Subluminal stochastic gravitational waves in pulsar-timing arrays and astrometry
Creators: name: Qin, Wenzer
name: Boddy, Kimberly K.
name: Kamionkowski, Marc
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The detection of a stochastic background of low-frequency gravitational waves by pulsar-timing and astrometric surveys will enable tests of gravitational theories beyond general relativity. These theories generally permit gravitational waves with non-Einsteinian polarization modes, which may propagate slower than the speed of light. We use the total-angular-momentum wave formalism to derive the angular correlation patterns of observables relevant for pulsar timing arrays and astrometry that arise from a background of subluminal gravitational waves with scalar, vector, or tensor polarizations. We find that the pulsar timing observables for the scalar longitudinal mode, which diverge with source distance in the luminal limit, are finite in the subluminal case. Furthermore, we apply our results to $f(R)$ gravity, which contains a massive scalar degree of freedom in addition to the standard transverse-traceless modes. The scalar mode in this $f(R)$ theory is a linear combination of the scalar-longitudinal and scalar-transverse modes, exciting only the monopole and dipole for pulsar timing arrays and only the dipole for astrometric surveys.
description: 12 pages, 5 figures, 1 table; v2: matches published version
Market Structure, Conduct, and Performance: Constraints of Performance of Ethiopian Grain Markets
Creators: name: Dessalegn, Gebremeskel
name: Jayne, Thomas S.
name: Shaffer, James D.
name: Dessalegn, Gebremeskel
name: Jayne, Thomas S.
name: Shaffer, James D.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: food security
subject: food policy
subject: Ethiopia
subject: grain markets

description: The purpose of this report is to assess the efficiency of the Ethiopian grain marketing system and identify some of the constraints on market participants which influence its performance. The main questions dealt with are: How is the grain marketing system organized and coordinated? Is the grain trade business composed of many small units competing one another or is it dominated by few large participants? What are the approaches followed by traders in buying, selling and pricing grain? Are there any barriers to entry, and if so, what are the major factors? What problems and constraints are observed in transportation, storage, financial credit, and market information? How have the structure and conduct of the market and the constraints and problems affected the performance of the market?
DIGITAL TECHNOLOGIES AND THE NEED TO INTRODUCE THEM INTO THE EDUCATIONAL PROCESS
Creators: name: Soliyev, Nodirjon
Publisher: name: Zenodo
Year: 2024

description: The article discusses the need for the use of digital technologies in the educational process and the creation of conditions for the use of digital technologies to improve the quality of education. Modern digital technologies and the need to introduce them into the educational process are also considered.
Paper.pdf
Creators: name: Rupani, Vivan
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 460806
subject: Human-computer interaction
classificationCode: 460708
subject: Virtual and mixed reality
classificationCode: 460799
subject: Graphics, augmented reality and games not elsewhere classified
classificationCode: 520104
subject: Industrial and organisational psychology (incl. human factors)

description: The paper examines the Virtual Representation of a Physical Factory, which offers an interactive and immersive simulation designed to enhance operational understanding and training within an industrial environment. By constructing detailed 3D models of machinery and equipment, and utilizing model simulations to depict a virtual representation of a physical factory, this approach provides an interactive experience to facilitate remote training. The paper highlights the following key operational areas: Pressure Die Casting, Drilling and Tapping, Powder Coating, CNC, Shot Blasting, Fettling, Filing, and Quality Inspection.This method enables a meticulous visualization of the production workflow, and permits users to interact with the virtual environment. The detailed representations allow users to explore the factory setting in a controlled, risk-free space and mirror actual production process. The factory model was created using Unity software, which ensures a robust and dynamic platform for simulating diverse industrial scenarios. The machine models were developed with SolidEdge which depicted the mechanical resources and the intricate details of the manufacturing process.Additionally, the MetaXR plugin in Unity software facilitates seamless integration with Oculus, enabling a fully immersive virtual reality experience that closely simulates the operational aspects of a physical factory environment. This advanced integration supports a more effective training paradigm by providing users with realistic feedback and interactive control mechanisms.This approach not only conserves time and resources by minimizing the need for on-site training and reducing operational downtime, but it also provides an effective means for gaining practical, hands-on experience in a simulated environment. Overall, the Virtual Representation of a Physical Factory is an innovative solution that enhances industrial training, improves safety, and optimizes production processes, thereby contributing to increased efficiency and a better understanding of workflows.
Tuning Ambipolarity in a Polymer Field Effect Transistor using Graphene electrodes
Creators: name: Bairagi, Kaushik
name: Catalano, Sara
name: Calavalle, Francesco
name: Zuccatti, Elisabetta
name: Llopis, Roger
name: Casanova, Fèlix
name: Hueso, Luis E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Polymer field-effect transistors with 2D graphene electrodes are devices that merge the best of two worlds: on the one hand, the low-cost and processability of organic materials and, on the other hand, the chemical robustness, extreme thinness and flexibility of graphene. Here, we demonstrate the tuning of the ambipolar nature of the semiconductor polymer N2200 from Polyera ActiveInk by incorporating graphene electrodes in a transistor geometry. Our devices show a balanced ambipolar behavior with high current ON-OFF ratio and charge carrier mobilities. These effects are caused by both the effective energy barrier modulation and by the weak electric field screening effect at the graphene-polymer interface. Our results provide a strategy to integrate 2D graphene electrodes in ambipolar transistors in order to improve and modulate their characteristics, paving the way for the design of novel organic electronic devices.
description: 16 pages, 4 figures, Accepted Manuscript
Spectator scattering at NLO in non-leptonic B decays: Tree amplitudes
Creators: name: Beneke, M.
name: Jager, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the 1-loop (alpha_s^2) correction to hard spectator scattering in non-leptonic B decay tree amplitudes. This forms part of the NNLO contribution to the QCD factorization formula for hadronic B decays, and introduces a new rescattering phase that corrects the leading-order result for direct CP asymmetries. Among the technical issues, we discuss the cancellation of infrared divergences, and the treatment of evanescent four-quark operators. The infrared finiteness of our result establishes factorization of spectator scattering at the 1-loop order. Depending on the values of hadronic input parameters, the new 1-loop correction may have a significant impact on tree-dominated decays such as B -> pi pi.
description: 28 pages, 5 figures, LaTeX
Vertical and Spatial Integration of Grain Markets in Ethiopia: Implications for Grain Markets
Creators: name: Negassa, Asfaw
name: Jayne, Thomas S.
name: Negassa, Asfaw
name: Jayne, Thomas S.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Crop Production/Industries
subject: Food Security and Poverty
subject: Marketing
subject: FOS: Economics and business
subject: food security
subject: food policy
subject: Ethiopia
subject: grain markets

description: The major objective of this study was to assess the performance of grain markets in Ethiopia at the individual market levels and for groups of markets which are spatially linked. By examining the nature of relationships among producer, wholesale, and retail prices in individual markets and among different markets, the study is also aimed at improving the understanding of the grain market operation under the emerging new grain market structure.
A two component link with Alexander polynomial one is concordant to the Hopf link
Creators: name: Davis, James F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25; 57N12

description: Four-dimensional surgery is used to show that a two component link with Alexander polynomial one is topologically concordant to the Hopf link.
description: To appear in the Mathematical Proceedings of the Cambridge Philosophicial Society
Agricultural Market Performance and Determinants of Fertilizer Use in Ethiopia
Creators: name: Demeke, Mulat
name: Kelly, Valerie A.
name: Jayne, Thomas S.
name: Said, Ali
name: Le Vallee, Jean-Charles
name: Chen, H.
name: Demeke, Mulat
name: Kelly, Valerie A.
name: Jayne, Thomas S.
name: Said, Ali
name: Le Vallee, Jean-Charles
name: Chen, H.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: food security
subject: food policy
subject: Ethiopia
subject: fertilizer use

description: This paper examines how the fertilizer sector in general, and farmers’ demand for fertilizer in particular, has evolved since the introduction of fertilizer sector reforms in Ethiopia. There is much debate in the agricultural development literature about whether fertilizer use in Africa is constrained primarily by poor input distribution systems, by farmers’ lack of knowledge concerning the benefits and correct use of fertilizer, or by lack of effective demand because the product is simply not profitable enough. This paper looks at each of these issues in an effort to understand the relative importance of the different constraints and how well current policies are addressing the problems. It attempts to identify additional policy measures needed to sustain expanded use of fertilizer and thus enhance food security in Ethiopia.
Il metodo mitico e i cattivi pensieri
Creators: name: Franzini, Elio
Publisher: name: Aisthesis. Pratiche, linguaggi e saperi dell’estetico
Year: 2012

description: Moving from a definition of his « mythical method», the essay aims to outline the so-called «Philosophy of Art» of Paul Valéry. It sketches a portrait of the French author as an authentic philosopher of phenomenology able to define in a non-abstract way what must be intended with «aesthetics».
description: Aisthesis. Pratiche, linguaggi e saperi dell’estetico, Vol. 5 No. 1 (2012): Paul Valéry: strategie del sensibile
Vanadium gate-controlled Josephson half-wave nanorectifier
Creators: name: Puglia, C.
name: De Simoni, G.
name: Ligato, N.
name: Giazotto, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recently, the possibility to tune the critical current of conventional metallic superconductors via electrostatic gating was shown in wires, Josephson weak-links and superconductor-normal metal-superconductor junctions. Here we exploit such a technique to demonstrate a gate-controlled vanadium-based Dayem nano-bridge operated as a \emph{half-wave} rectifier at $3$ K. Our devices exploit the gate-driven modulation of the critical current of the Josephson junction, and the resulting steep variation of its normal-state resistance, to convert an AC signal applied to the gate electrode into a DC one across the junction. All-metallic superconducting gated rectifiers could provide the enabling technology to realize tunable photon detectors and diodes useful for superconducting electronics circuitry.
description: 5 pages, 4 figures
Conditional Inferences Based on Vine Copulas with Applications to Credit Spread Data of Corporate Bonds
Creators: name: Pan, Shenyi
name: Joe, Harry
name: Li, Guofu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Understanding the dependence relationship of credit spreads of corporate bonds is important for risk management. Vine copula models with tail dependence are used to analyze a credit spread dataset of Chinese corporate bonds, understand the dependence among different sectors and perform conditional inferences. It is shown how the effect of tail dependence affects risk transfer, or the conditional distributions given one variable is extreme. Vine copula models also provide more accurate cross prediction results compared with linear regressions. These conditional inference techniques are a statistical contribution for analysis of bond credit spreads of investment portfolios consisting of corporate bonds from various sectors.
VGCN-BERT: Augmenting BERT with Graph Embedding for Text Classification
Creators: name: Lu, Zhibin
name: Du, Pan
name: Nie, Jian-Yun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: I.2.4; I.2.7

description: Much progress has been made recently on text classification with methods based on neural networks. In particular, models using attention mechanism such as BERT have shown to have the capability of capturing the contextual information within a sentence or document. However, their ability of capturing the global information about the vocabulary of a language is more limited. This latter is the strength of Graph Convolutional Networks (GCN). In this paper, we propose VGCN-BERT model which combines the capability of BERT with a Vocabulary Graph Convolutional Network (VGCN). Local information and global information interact through different layers of BERT, allowing them to influence mutually and to build together a final representation for classification. In our experiments on several text classification datasets, our approach outperforms BERT and GCN alone, and achieve higher effectiveness than that reported in previous studies.
description: 12 pages, 2 figures
On the structure theory of cubespace fibrations
Creators: name: Gutman, Yonatan
name: Liang, Bingbing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 11B30, 37B05, 54H20

description: We study fibrations in the category of cubespaces/nilspaces. We show that a fibration of finite degree $f \colon X\rightarrow Y$ between compact ergodic gluing cubespaces (in particular nilspaces) factors as a (possibly countable) tower of compact abelian Lie group principal fiber bundles over $Y$. If the structure groups of $f$ are connected then the fibers are (uniformly) isomorphic (in a strong sense) to an inverse limit of nilmanifolds. In addition we give conditions under which the fibers of $f$ are isomorphic as subcubespaces. We introduce regionally proximal equivalence relations relative to factor maps between minimal topological dynamical systems for an arbitrary acting group. We prove that any factor map between minimal distal systems is a fibration and conclude that if such a map is of finite degree then it factors as a (possibly countable) tower of principal abelian Lie compact group extensions, thus achieving a refinement of both the Furstenberg's and the Bronstein-Ellis structure theorems in this setting.
description: Some typos are fixed. The proof of Theorem 1.29 is modified due to a gap in Lemma 5.2
The structure and basis of soil microbial biodiversity
Creators: name: SEAN KEITH BAY
Publisher: name: Monash University
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology

description: Soil bacteria underpin the health of the soil biosphere and mediate critical ecosystem services. This thesis addresses gaps in our understanding on which drivers underpin their distributions, what processes support their energy requirements and how these processes vary across ecosystems. Key findings show that the spatial structure of soil bacteria is stronger than previously reported. Microbial communities harbour diverse metabolic capabilities and the most dominant taxa in these environments have the flexibility to use organic carbon and atmospheric trace gases to meet energy and carbon needs. This work presents an advance in our understanding of soil microbial biodiversity and function.
Food Aid Targeting in Ethiopia: A Study of Household Food Insecurity and Food Aid Distributions
Creators: name: Clay, Daniel C.
name: Molla, Daniel
name: Habtewold, Debebe
name: Clay, Daniel C.
name: Molla, Daniel
name: Habtewold, Debebe
Publisher: name: Unknown
Year: 1998
Subjects: subject: Food Security and Poverty
subject: food security
subject: food policy
subject: Ethiopia
subject: food aid

description: This paper examines the efficiency of food aid targeting in rural Ethiopia based on empirical evidence from a survey of a nationally representative sample of 4,166 farm households conducted by the Grain Market Research Project (GMRP) of MEDAC in collaboration with the Central Statistical Authority (CSA). The survey was administered in June 1995 and covered the 12-month period from the beginning of the 1995 meher harvest to the beginning of the 1996 meher harvest.
An Econometric Evaluation of Producers’ Preferences for Mandatory Labeling of Genetically Modified Food Products
Creators: name: Chembezi, Duncan M.
name: Chaverest, E'licia L.
name: Wheelock, Gerald
name: Sharma, Govind C.
name: Kebede, Ellene
name: Tegegne, Fisseha
name: Chembezi, Duncan M.
name: Chaverest, E'licia L.
name: Wheelock, Gerald
name: Sharma, Govind C.
name: Kebede, Ellene
name: Tegegne, Fisseha
Publisher: name: Unknown
Year: 2008
Subjects: Food Consumption/Nutrition/Food Safety

description: This study uses multivariate statistical procedures to assess producers’ preferences for mandatory labeling of genetically modified (GM) products. The analysis is based on a sample of 1,887 farm producers in ten Southern states of the U.S. who claimed to be “somewhat knowledgeable” about biotechnology. A logistic regression model was employed to isolate characteristics of producers assumed to influence their perceptions of biotechnology and preferences for mandatory labeling. The study highlights a number of important findings with significant implications. It reveals that most producers in the ten states are older (average age is 58 years) and have some college education but remain part-time farmers, dependent largely on off-farm income for their livelihood. The majority raise beef cattle or produce hay and timber. Most producers are in favor of mandatory labeling even though only half of the respondents totally agree with it. They believe biotech will benefit larger farmers, and that farmers will be dependent on large corporations that develop and market biotechnology inputs. The majority are neutral about whether consumers will accept biotech crop products. They also remain undecided about government’s ability to properly regulate agricultural biotechnology. Limitations and benefits of biotechnology, education, and enterprise characteristics significantly influence producers’ probability of being in favor of mandatory labeling. Information sources such newspaper, radio, and television; race; age; and whether a county was underserved do not significantly affect producers’ perceptions regarding mandatory labeling of GM food products.
Demand for Pasture-Raised Livestock Products in Michigan: Results of Consumer Surveys and Experimental Auctions
Creators: name: Conner, David S.
name: Oppenheim, Diana
name: Conner, David S.
name: Oppenheim, Diana
Publisher: name: Unknown
Year: 2008
Subjects: Food Consumption/Nutrition/Food Safety
Livestock Production/Industries

description: Pasture-raised livestock products present a niche-marketing opportunity for small- and medium-scale farmers; growth of this market may enhance the economic, social, and environmental sustainability of livestock agriculture. Results from an earlier statewide poll in Michigan found that consumers place great importance on product attributes associated with the pasture-based production model. This report presents findings from a combination of consumer surveys conducted at three Michigan retail locations and a series of experimental auctions. Participants in both the survey and auction components view pasture-raised beef and milk products very favorably, believing these products are healthy for humans to eat and are raised in environmentally friendly and humane ways. Survey respondents reported high likelihood of purchase; both the survey and auction subjects expressed willingness to pay a premium for pasture-raised products. We discuss these findings, particularly implications for the “four P’s” of marketing.
Additional file 1 of Enhanced multi-stress tolerance and glucose utilization of Saccharomyces cerevisiae by overexpression of the SNF1 gene and varied beta isoform of Snf1 dominates in stresses
Creators: name: Meng, Lu
name: Liu, Hui-Ling
name: Lin, Xue
name: Hu, Xiao-Ping
name: Kun-Ru Teng
name: Liu, Si-Xin
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1. Analysis of the relative cell viability of the strains in stresses. The cells were cultivated in (a) 70 g/L glucose at 30 °C, (b) 300 g/L glucose at 30 °C, (c) YEPD medium with 8% ethanol at 30 °C, and (d) YEPD medium at 53 °C. The relative cell viability was calculated and expressed as the relative percentage of colony forming units (CFUs) after stressing to the CFUs before stressing. Significant difference of the transformants from the parent strain AY3a was confirmed by Student’s t-test (*P
Un enigma da sciogliere: l’intimo-estraneo corpo, vettore dello spirituale
Creators: name: Scapolo, Barbara
Publisher: name: Aisthesis. Pratiche, linguaggi e saperi dell’estetico
Year: 2012

description: Underneath the apparent homogeneity of a “positivistic” mentality, Valéry has never ceased to wonder about “things Vague and Impure”. Trying to understand the intérieur and the choses absentes particularly gives an answer to the need to place these “unknown” within the horizon of the possible, beyond the immediate grasp of knowledge. The primary vector of this operation is a thorough investigation of the “ambiguous” sphere of sensitivity, and in particular the uncanny meaning of “my-body”.
description: Aisthesis. Pratiche, linguaggi e saperi dell’estetico, Vol. 5 No. 1 (2012): Paul Valéry: strategie del sensibile