cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Complex Symmetry Gravitational Theory as a New Alternative of Dark Energy
Creators: name: Shao, Ying
name: Gui, Yuan-xing
name: Wang, Wei
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose that complex symmetry gravitational theory (CSGT) explain the accelerating expansion of universe. In this paper universe is taken as the double complex symmetric space. Cosmological solution is obtained within CSGT. The conditions of the accelerating expansion of universe are discussed within CSGT. Moreover, the range of equation of state of matter $ω_ε$ is given in the hyperbolic imaginary space.
description: Latex 9 pages, submitted to International Journal of Theoretical Physics
Búzatermelés – olcsón vagy jól?
Creators: name: Fodor-Nemeth, Barbara
name: Fodor-Nemeth, Barbara
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Farm Management
subject: költségkímélő termelés
subject: intenzív technológia
subject: jövedelmezőség.
subject: low-cost production
subject: intensive technology
subject: profitability

description: Az utóbbi időben a mezőgazdasági termelők jó része elfordult az intenzív termeléstől, és költségkímélő módon kezdett gazdálkodni. Nem a körülményekhez képest legnagyobb termés betakarítása a cél, hanem a lehető legnagyobb profi t. Az elmúlt két év eredményeit vizsgálva kiderült, hogy a profi t mindenképpen nőtt a költségcsökkentéssel, ugyanakkor ez a szemlélet és gyakorlat hosszú távon jelentős agronómiai problémákat okozhat. ---------------------------------------- Recently a sizeable portion of agricultural producers have abandoned intensive production in favour of low-cost farming. Their goal is to make the most profit rather than to achieve the largest harvest possible under the circumstances. We set out to explore the economic consequences of this change in philosophy. Analysis of the results from the last two years revealed that cutting costs definitely led to increased profits, but this strategy may cause significant problems in agronomy on the long term.
PIANOTREE VAE: Structured Representation Learning for Polyphonic Music
Creators: name: Wang, Ziyu
name: Zhang, Yiyi
name: Zhang, Yixiao
name: Jiang, Junyan
name: Yang, Ruihan
name: Zhao, Junbo
name: Xia, Gus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The dominant approach for music representation learning involves the deep unsupervised model family variational autoencoder (VAE). However, most, if not all, viable attempts on this problem have largely been limited to monophonic music. Normally composed of richer modality and more complex musical structures, the polyphonic counterpart has yet to be addressed in the context of music representation learning. In this work, we propose the PianoTree VAE, a novel tree-structure extension upon VAE aiming to fit the polyphonic music learning. The experiments prove the validity of the PianoTree VAE via (i)-semantically meaningful latent code for polyphonic segments; (ii)-more satisfiable reconstruction aside of decent geometry learned in the latent space; (iii)-this model's benefits to the variety of the downstream music generation.
Theory of Zero-Bias Anomaly in Magnetic Tunnel Junctions: Inelastic Tunneling via Impurities
Creators: name: Sheng, L.
name: Xing, D. Y.
name: Sheng, D. N.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using the closed-time path integral approach, we nonperturbatively study inelastic tunneling of electrons via magnetic impurities in the barrier accompanied by phonon emission in a magnetic tunnel junction. The spectrum density of phonon emission is found to show a power-law infrared singularity $\simω^{-(1-g)}$ with $g$ the dimensionless electron-phonon coupling. As a consequence, the tunneling conductance $G(V)$ increases with bias voltage $| V|$ as $G(V)-G(0)\sim| V|^{2g}$, exhibiting a discontinuity in slope at V=0 for $g\le 0.5$. This theory can reproduce both cusp-like and non-cusp-like feature of the zero-bias anomaly of tunneling resistance and magnetoresistance widely observed in experiments.
Stochastic Processes as the Origin of the Double-Power Law Shape of the Quasar Luminosity Function
Creators: name: Ren, Keven
name: Trenti, Michele
name: Di Matteo, Tiziana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Quasar Luminosity Function (QLF) offers insight into the early co-evolution of black holes and galaxies. It has been characterized observationally up to redshift $z\sim6$ with clear evidence of a double power-law shape, in contrast to the Schechter-like form of the underlying dark-matter halo mass function. We investigate a physical origin for the difference in these distributions by considering the impact of stochasticity induced by the processes that determine the quasar luminosity for a given host halo and redshift. We employ a conditional luminosity function and construct the relation between median quasar magnitude versus halo mass $M_{UV,\rm{c}}(M_{\rm{h}})$ with log-normal in luminosity scatter $Σ$, and duty-cycle $ε_{\rm{DC}}$, and focus on high redshift $z\gtrsim4$. We show that, in order to reproduce the observed QLF, the $Σ=0$ abundance matching requires all of the brightest quasars to be hosted in the rarest most massive dark-matter halos (with an increasing $M_{UV,\rm{c}}/M_{\rm{h}}$ in halo mass). Conversely, for $Σ>0$ the brightest quasars can be over-luminous outliers hosted in relatively common dark-matter halos. In this case, the median quasar magnitude versus halo mass relation, $M_{UV,\rm{c}}$, flattens at the high-end, as expected in self-regulated growth due to feedback. We sample the parameter space of $Σ$ and $ε_{\rm{DC}}$ and show that $M_{UV,\rm{c}}$ flattens above $M_{\rm{h}}\sim 10^{12}M_{\odot}$ for $ε_{\rm{DC}}<10^{-2}$. Models with $ε_{\rm{DC}}\sim1$ instead require a high mass threshold close to $M_{\rm{h}}\gtrsim10^{13}M_{\odot}$. We investigate the impact of $ε_{\rm{DC}}$ and $Σ$ on measurements of clustering and find there is no luminosity dependence on clustering for $Σ>0.3$, consistent with recent observations from Subaru HSC.
description: 12 pages, 6 figures; accepted for publication in ApJ
A precíziós gazdálkodás terjedésének vizsgálata
Creators: name: Kalmar, Sandor
name: Kalmar, Sandor
Publisher: name: Unknown
Year: 2009
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Research and Development/Tech Change/Emerging Technologies
subject: precíziós gazdálkodás
subject: innováció terjedése
subject: ökonómiai modell
subject: precision farming
subject: spreading of innovation
subject: economic model

description: A precíziós gazdálkodás – 90-es évek közepétől kezdődő – alkalmazását követően napjainkban is megválaszolásra vár a beruházás megtérülési idejének és a területnagyságnak az összefüggése. Megállapítható, hogy a beruházás az eszközök gyors avulását figyelembe véve, 3 éves megtérülés esetén, 3 millió Ft (áfával együtt) értékű eszközberuházás, 21 140 Ft/ha inputfelhasználás és 5%-os megtakarítási szint mellett 946 ha-on térülhet meg az inputanyag-megtakarításból. Természetesen több végeredmény is lehetséges a változók függvényében. -------------------------------------- Ever since precision farming was introduced in the mid-nineties, correlations between payback period and area size have been unexplored. It was found that – taking into account the quick obsolescence of assets –, to achieve a payback period of 3 years, an investment into assets of 3 million Forint (inc. VAT), input costs of HUF 21,140/ha and a savings ratio of 5% will need an area of 946 ha to achieve payback from savings on input materials. Varying the parameters will naturally lead to different results.
High-K Precession modes: Axially symmetric limit of wobbling motion
Creators: name: Shimizu, Yoshifumi R.
name: Matsuzaki, Masayuki
name: Matsuyanagi, Kenichi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The rotational band built on the high-K multi-quasiparticle state can be interpreted as a multi-phonon band of the precession mode, which represents the precessional rotation about the axis perpendicular to the direction of the intrinsic angular momentum. By using the axially symmetric limit of the random-phase-approximation (RPA) formalism developed for the nuclear wobbling motion, we study the properties of the precession modes in $^{178}$W; the excitation energies, B(E2) and B(M1) values. We show that the excitations of such a specific type of rotation can be well described by the RPA formalism, which gives a new insight to understand the wobbling motion in the triaxial superdeformed nuclei from a microscopic view point.
description: 14 pages, 8 figures (Spelling of the authors name was wrong at the first upload, so it is corrected)
A tápanyagpótlás és gyomirtás értékelése a helyspecifikus növénytermelési technológiában
Creators: name: Lencses, Eniko
name: Lencses, Eniko
Publisher: name: Unknown
Year: 2009
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Production Economics
subject: precíziós gazdálkodás (növényvédelem
subject: tápanyagpótlás)
subject: jövedelem
subject: árváltozás
subject: precision farming (plant protection
subject: nutrient supplementation)
subject: income
subject: price change

description: A Szent István Egyetem Józsefmajori tangazdaságának relatív jó talajadottságokkal rendelkező tábláiban a precíziós tápanyagpótlás alkalmazásával akár hektáronként 60 kg nitrogénhatóanyag-megtakarítás is elvárható a konvencionális technológiához képest. A precíziós tápanyagpótlási technológiával, a vizsgált táblák 50%-ánál tapasztalható anyagköltség-megtakarítás. Az anyagmegtakarítás mellett célszerű számolni a működési költségek növekedésével. A Szegedi Gabonakutató Kft. segítségével végzett szántóföldi kísérletek adatai alapján megállapítható, hogy kukoricatermelésnél 48,85% őszi gyomborítottság felett ökonómiailag indokolt a precíziós gyomirtás. ----------------------------------- By applying precision nutrient supplementation rather instead of conventional technology, as much as 60 kg of nitrogen active substance can be saved per hectare in the Józsefmajor study farm of Szent István University, which has relatively good soil. Precision nutrient supplementation enabled lower material costs in 50% of the parcels studied, provided that parcel level yield potential was ignored. In addition to saving on materials, though, increased operating costs should also be taken into consideration. Field tests performed with the assistance of Szegedi Gabonakutató Kft. showed that in maize production, precision weed control was economically justifi ed when autumn weed coverage exceeded 48.85%.
Secrecy content of two-qubit states
Creators: name: Acín, A.
name: Bae, J.
name: Bagan, E.
name: Baig, M.
name: Masanes, Ll.
name: Muñoz-Tapia, R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the set of two-qubit states from which a secret key can be extracted by single-copy measurements plus classical processing of the outcomes. We introduce a key distillation protocol and give the corresponding necessary and sufficient condition for positive key extraction. Our results imply that the critical error rate derived by Chau, Phys. Rev. A {\bf 66}, 060302 (2002), for a secure key distribution using the six-state scheme is tight. Remarkably, an optimal eavesdropping attack against this protocol does not require any coherent quantum operation.
description: 5 pages, RevTeX
A mezőgazdaságban keletkező biomassza energetikai hasznosításának agrárgazdasági megközelítése
Creators: name: Molnar, Andras
name: Molnar, Andras
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: externáliák
subject: biomassza
subject: energetikai felhasználás
subject: földhasználat
subject: méret-
subject: skála- és választékgazdaságosság
subject: externalities
subject: biomass
subject: use for energy production
subject: land use
subject: economies of scale
subject: volume and choice

description: A gazdálkodás ökonómiai kérdéseivel foglalkozók számára a piaci csere híján fontos feladat az externáliák minél szélesebb körű számszerűsítése, mivel csak a társadalom számára jelentkező összes költség és haszon figyelembevételével lehet megítélni a mindenkori agrárpolitikát. Egyre fontosabb az, hogy milyen agrárpolitikai eszközökkel oldhatók meg a liberalizált kereskedelemmel szembeni elvárások és a nem-termék jellegű javak társadalmilag optimális kibocsátása. Ebben a kettős elvárásban a földtulajdon és földhasználat szétválása előnytelen. ------------------------------------------- In the absence of exchange in the market, researchers into economic aspects of farming place a high emphasis on quantifying externalities to the maximum extent possible. This is because all of society’s costs and benefits need to be considered to assess agricultural policy at any time – as finding agricultural policy tools to resolve expectations from liberalised commerce and the optimal output of non-product goods is becoming more and more important. From the aspect of such double expectation, separation of land ownership and land use is unfavourable.
Probing dark energy with baryonic oscillations and future radio surveys of neutral Hydrogen
Creators: name: Abdalla, F. B.
name: Rawlings, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Current surveys may be on the verge of measuring the baryonic oscillations in the galaxy power spectrum which are clearly seen imprinted on the Cosmic Microwave Background. It has recently been proposed that these oscillations allow a `standard ruler' method of probing the equation of state of dark energy. In this paper we present a new calculation of the number of galaxies future adio telescopes will detect in surveys of the sky in neutral Hydrogen (HI). We estimate the likely statistical errors if the standard ruler method were to be applied to such surveys. We emphasise uncertainties in our calculations, and pinpoint the most important features of future HI surveys if they are to provide new constraints on dark energy via baryonic oscillations. Designs of future radio telescopes are required to have a large bandwidth (characterised by β$, the ratio of the instantaneous bandwidth to the bandwidth required by survey) and to have the widest instantaneous (1.4 GHz) field of view ($FOV$) possible. Given the expected sensitivity of a future Square Kilometre Array (SKA), given that half of its collecting area will be concentrated in a core of diameter $\sim 5 ~ \rm km$, and given a reasonable survey duration ($T_0$ $\sim$ 1 yr), we show that there will be negligible shot noise on a power spectrum derived from HI galaxies out to redshift $z \simeq 1.5$. To access the largest cosmic volume possible by surveying all the sky available, we argue that $β$, $T_0$ and $FOV$ must obey the relation $βFOV T_0 \gtsimeq 10 \rm deg^2$ yr. An $\sim$1-yr SKA survey would then contain $\gtsimeq 10^{9} (f_{\rm sky}/0.5)$ HI galaxies and provide constraints on the dark-energy parameter $w$ of order $Δw \simeq 0.01 (f_{\rm sky}/0.5)^{-0.5}$.
description: 15 pages, submitted to MNRAS
An activity system analysis of international telecollaboration : contexts, contradictions and learning
Creators: name: Basharina, Olga
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to provide a thick and rich description of interpretations and understanding of the complex nature of international telecollaboration, including 1) the relationship between participants, computer technologies, and context; 2) cross-cultural contradictions and 3) learning. To meet this purpose this study examined the long distance computer mediated communication in 4 WebCT forums which joined 52 Japanese, 37 Mexican, and 46 Russian English learners. Sources of data consisted of the written transcripts of the online exchanges, interviews, pre- and post- project surveys, journals, and participant observations. The analysis of data was framed within my model of Intercultural Context-Embedded Telecollaborative Activity (ICETA, an expanded version of the Activity System model by Engestrom, 1987) and structured within three broad dimensions: Contexts, Contradictions, and Learning. The "Contexts" dimension included characteristics of geopolitical structures, institutional contexts, context of interaction, and students' agency. The emphasis was on defining to what extent students shaped the environments and the environments shaped students' participation. "Contradictions" captured the how, and "Learning" the what aspects of interaction. The study illustrates how affordances of multiple contextual layers defined students' participation trajectories, their objectives, motivation or unwillingness to interact, and attitudes toward each other. The Japanese and Mexican students' participation represented an interactive learning paradigm whereas the participation of the Russian students represented a curriculum teacher-centred paradigm. Depending on their identity of deep, strategic or surface communicators students demonstrated differences in quality of their participation. The study identified eight major contradictions attributed to students' different cultures-of- use of the computer technologies (Thorne, 2003) and different frames of reference with regards to their norms of language use and beliefs about learning online. The study found evidence of both learning and not learning through content and discourse analysis of interaction protocols and students' interview and survey reports. Extending the ongoing discussion, the study emphasizes the importance of 1) students' cultures-of-use of computer technologies, mediated by instructors and by broader socio-cultural contexts, 2) students' frames of reference with regards to interaction and learning, and 3) students' agency in defining the meaning of being communicatively competent in international/intercultural online environments.
Tail Emission of Prompt Gamma-Ray Burst Jets
Creators: name: Yamazaki, Ryo
name: Toma, Kenji
name: Ioka, Kunihito
name: Nakamura, Takashi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Tail emission of the prompt gamma-ray burst (GRB) is discussed using a multiple emitting sub-shell (inhomogeneous jet, sub-jets or mini-jets) model, where the whole GRB jet consists of many emitting sub-shells. One may expect that such a jet with angular inhomogeneity should produce spiky tail emission. However, we found that the tail is not spiky but is decaying roughly monotonically. The global decay slope of the tail is not so much affected by the local angular inhomogeneity but affected by the global sub-shell energy distribution. The fact that steepening breaks appeared in some events prefers the structured jets. If the angular size of the emitting sub-shell is around 0.01-0.02 rad, some bumps or fluctuations appear in the tail emission observed frequently in long GRBs. If the parameter differences of sub-shell properties are large, the tail has frequent changes of the temporal slope observed in a few bursts. Therefore, the multiple emitting sub-shell model has the advantage of explaining the small-scale structure in the observed rapid decay phase.
description: 6 pages, 6 figures, MNRAS in press
Learning Interpretable Representation for Controllable Polyphonic Music Generation
Creators: name: Wang, Ziyu
name: Wang, Dingsu
name: Zhang, Yixiao
name: Xia, Gus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Sound (cs.SD)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: While deep generative models have become the leading methods for algorithmic composition, it remains a challenging problem to control the generation process because the latent variables of most deep-learning models lack good interpretability. Inspired by the content-style disentanglement idea, we design a novel architecture, under the VAE framework, that effectively learns two interpretable latent factors of polyphonic music: chord and texture. The current model focuses on learning 8-beat long piano composition segments. We show that such chord-texture disentanglement provides a controllable generation pathway leading to a wide spectrum of applications, including compositional style transfer, texture variation, and accompaniment arrangement. Both objective and subjective evaluations show that our method achieves a successful disentanglement and high quality controlled music generation.
Collective synchronization in spatially extended systems of coupled oscillators with random frequencies
Creators: name: Hong, H.
name: Park, Hyunggyu
name: Choi, M. Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study collective behavior of locally coupled limit-cycle oscillators with random intrinsic frequencies, spatially extended over $d$-dimensional hypercubic lattices. Phase synchronization as well as frequency entrainment are explored analytically in the linear (strong-coupling) regime and numerically in the nonlinear (weak-coupling) regime. Our analysis shows that the oscillator phases are always desynchronized up to $d=4$, which implies the lower critical dimension $d_{l}^{P}=4$ for phase synchronization. On the other hand, the oscillators behave collectively in frequency (phase velocity) even in three dimensions ($d=3$), indicating that the lower critical dimension for frequency entrainment is $d_{l}^{F}=2$. Nonlinear effects due to periodic nature of limit-cycle oscillators are found to become significant in the weak-coupling regime: So-called {\em runaway oscillators} destroy the synchronized (ordered) phase and there emerges a fully random (disordered) phase. Critical behavior near the synchronization transition into the fully random phase is unveiled via numerical investigation. Collective behavior of globally-coupled oscillators is also examined and compared with that of locally coupled oscillators.
description: 18 pages, 18 figures
Spatial Factor Modeling: A Bayesian Matrix-Normal Approach for Misaligned Data
Creators: name: Zhang, Lu
name: Banerjee, Sudipto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Multivariate spatially-oriented data sets are prevalent in the environmental and physical sciences. Scientists seek to jointly model multiple variables, each indexed by a spatial location, to capture any underlying spatial association for each variable and associations among the different dependent variables. Multivariate latent spatial process models have proved effective in driving statistical inference and rendering better predictive inference at arbitrary locations for the spatial process. High-dimensional multivariate spatial data, which is the theme of this article, refers to data sets where the number of spatial locations and the number of spatially dependent variables is very large. The field has witnessed substantial developments in scalable models for univariate spatial processes, but such methods for multivariate spatial processes, especially when the number of outcomes are moderately large, are limited in comparison. Here, we extend scalable modeling strategies for a single process to multivariate processes. We pursue Bayesian inference which is attractive for full uncertainty quantification of the latent spatial process. Our approach exploits distribution theory for the Matrix-Normal distribution, which we use to construct scalable versions of a hierarchical linear model of coregionalization (LMC) and spatial factor models that deliver inference over a high-dimensional parameter space including the latent spatial process. We illustrate the computational and inferential benefits of our algorithms over competing methods using simulation studies and an analysis of a massive vegetation index data set.
Ripretinib: Frirst Approval
Creators: name: Sohita Dhillon
Publisher: name: Adis Journals
Year: 2020
Subjects: subject: Medicine
subject: 111299 Oncology and Carcinogenesis not elsewhere classified
subject: FOS: Clinical medicine
subject: 110307 Gastroenterology and Hepatology

description: Compliance with Ethical Standards
Funding: The preparation of this review was not supported by any external funding.
Conflict of interest: During the peer review process the manufacturer of the agent under review was offered an opportunity to comment on the article. Changes resulting from any comments received were made by the authors on the basis of scientific completeness and accuracy. Sohita Dhillon is a contracted employee of Adis International Ltd/Springer Nature, is responsible for the article content and declares no relevant conflicts of interest.
Additional information about this Adis Drug Review can be found here

AbstractRipretinib (QINLOCK™) is a novel type II tyrosine switch control inhibitor being developed by Deciphera Pharmaceuticals for the treatment of KIT proto-oncogene receptor tyrosine kinase (KIT)-driven and/or platelet derived growth factor receptor A (PDGFRA)-driven cancers, including gastrointestinal stromal tumour (GIST). Ripretinib inhibits KIT and PDGFRA kinase, including wild-type, primary and secondary mutations, as well as other kinases, such as PDGFRB, TIE2, VEGFR2 and BRAF. In May 2020, oral ripretinib received its first approval in the USA for the treatment of adult patients with advanced GIST who have received prior treatment with ≥ 3 kinase inhibitors, including imatinib. The US FDA, Health Canada and the Australian Therapeutic Goods Administration collaborated on the review of the ripretinib new drug application in this indication as part of Project Orbis; regulatory review in Australia and Canada is ongoing. Clinical development for GIST, solid tumours and systemic mastocytosis is underway in several countries worldwide. This article summarizes the milestones in the development of ripretinib leading to this first approval for the treatment of advanced GIST.

© Springer Nature Switzerland AG 2020
Optical modulation in a resonant tunneling relaxation oscillator
Creators: name: Figueiredo, J. M. L.
name: Stanley, C. R.
name: Boyd, A. R.
name: Ironside, C. N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report high speed optical modulation in a resonant tunneling relaxation oscillator consisting of a resonant tunneling diode (RTD) integrated with a unipolar optical waveguide and incorporated in a package with a coplanar waveguide transmission line. When appropriately biased, the RTD can provide wide-bandwidth electrical gain. For wavelengths near the material band-edge, small changes of the applied voltage give rise to large, high-speed electro-absorption modulation of the light. We have observed optical modulation at frequencies up to 14 GHz, associated with sub harmonic injection locking of the RTD oscillation at the fundamental mode of the coplanar transmission line, as well as generation of 33 ps optical pulses due to relaxation oscillation.
description: pages
Utilizing Calabash Fruit (Crescentia cujete) Charcoal as a Sustainable Alternative for Ink Production.docx
Creators: name: Quinitio, Serafin
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310802
subject: Plant biochemistry

description: Utilizing Calabash Fruit (Crescentia cujete) Charcoal as a Sustainable Alternative for Ink Production
Ghosts and Tachyons in the Fifth Dimension
Creators: name: Pospelov, Maxim
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present several solutions for the five dimensional gravity models in the presence of bulk ghosts and tachyons to argue that these "troublesome" fields can be a useful model-building tool. The ghost-like signature of the kinetic term for a bulk scalar creates a minimum in the scale factor, removing the necessity for a negative tension brane in models with the compactified fifth dimension. It is shown that the model with the positive tension branes and a ghost field in the bulk leads to the radion stabilization. The bulk scalar with the variable sign kinetic term can be used to model both positive and negative tension branes of a finite width in the compact dimension. Finally, we present several ghost and tachyon field configurations in the bulk that lead to the localization of gravity in four dimensions, including one solution with the Gaussian profile for the metric, g_{μν}(y)=η_{μν}\exp{-αy^2}, which leads to a stronger localization of gravity than the Randall-Sundrum model.
description: New references added
Scalar and gravitational hair for extreme Kerr black holes
Creators: name: Burko, Lior M.
name: Khanna, Gaurav
name: Sabharwal, Subir
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For scalar perturbations of an extreme Reissner-Nordstr{\" o}m black hole we show numerically that the Ori pre-factor equals the Aretakis conserved charge. We demonstrate a linear relation of a generalized Ori pre-factor -- a certain expression obtained from the late-time expansion or the perturbation field at finite distances -- and the Aretakis conserved charge for a family of scalar or gravitational perturbations of an extreme Kerr black hole, whose members vary only in the radial location of the center of the initial packet. We infer that it can be established that there is an Aretakis conserved charge for scalar or gravitational perturbations of extreme Kerr black holes. This conclusion, in addition to the calculation of the Aretakis charge, can be made from measurements at a finite distance: Extreme Kerr black holes have gravitational hair that can be measured at finite distances. This gravitational hair can in principle be detected by gravitational-wave detectors.
description: 4 pages, 5 figures
The minimis aid, a possible alternative for supplementing the budgets of SMEes for enhancing competitiveness through the capacity of innovation - the Romanian case
Creators: name: Tudor, Florin
name: Tudor, Florin
Publisher: name: Unknown
Year: 2010
Subjects: subject: International Development
subject: Innovation
subject: the minimis aid
subject: financial crisis
subject: competitiveness.

description: The latest Scoreboard of the European Commission regarding the state aid shows that the Member States are using increasingly more opportunities offered by EU rules on state aid. This paper comes to clarify the benefits of accessing the minimis aid by traders, as capital contributions, guarantees, risk capital measures in the innovation process, to create a new product, introducing a new method of manufacturing, entering in a new market or creating a new market, calling for a new raw material.
Quantum versus classical behavior in the boundary susceptibility of the ferromagnetic Heisenberg chain
Creators: name: Sirker, J.
name: Bortz, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We calculate the temperature dependence of the boundary susceptibility $χ_B$ for the quantum ferromagnetic Heisenberg chain by a modified spin-wave theory (MSWT). We find that $χ_B$ diverges at low temperatures $\sim -T^{-3}$ and therefore more rapidly and with opposite sign than the bulk susceptibility $χ_{\text{bulk}}\sim T^{-2}$. Our result for $χ_B$ is identical in leading order with the result for the classical system. In next leading orders, however, quantum corrections to the classical result exist which are important to obtain a good description over a wide temperature range. For the $S=1/2$ case, we show that our full result from MSWT is in excellent agreement with numerical data obtained by the density-matrix renormalization group applied to transfer matrices. Finally, we discuss the quantum to classical crossover as well as consequences of our results for experiment in some detail.
description: 6 pages, 3 figures
Implications of resource structure on the partial productivity of agriculture
Creators: name: Tosin, Milos
name: Knezevic, Marija
name: Stavljanin, Biljana
name: Tosin, Milos
name: Knezevic, Marija
name: Stavljanin, Biljana
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural Finance
subject: Productivity Analysis
subject: Resource supply
subject: productivity of labor
subject: productivity of land
subject: competitiveness
subject: different types of agriculture.

description: Resource structure in the observed countries, who belong to different agriculture types expressed through relationship land/work ratio, indicates significant variations. Different resource supply is crucial in determining the level of productivity of labor and land in agriculture, and therefore, affects the competitiveness of agriculture, the competitiveness of an entire national economy as well.
Evaluating the extent to which the Australian open banking regulatory framework effectively balances data privacy and innovation
Creators: name: Podder, Suman
Publisher: name: Macquarie University
Year: 2024
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: To accelerate the pace of innovation through customer data sharing, the Australian government legislated 'Consumer Data Right' Act, which is being implemented as 'Open Banking' in the banking sector. Since Open Banking is customer data-dependent, the regulators have augmented data protection by introducing new Privacy Safeguards. However, the regulatory conditions that improve data privacy may have an adverse effect on innovation. The purpose of this thesis is to evaluate the extent to which the provisions under the Open Banking regulations balance customer's data privacy and data-driven innovation. Using theoretical and doctrinal methods, this thesis develops a new theoretical model to integrate the principles necessary to protect data privacy with the conditions that are conducive for innovation. After applying the six criteria of the developed model to analyse the Open Banking regulations, this research concludes that the regulators did not appropriately consider the interdependence of data privacy and innovation and that one can be used to promote the other. This thesis demonstrates the need to revise the regulations with due consideration to the insights drawn from this research, for effectively balancing the provisions that protect data privacy with those that enable data-related innovation.
Quasiclassical Theory for Thermodynamic Properties of the Two-Band Superconductor MgB$_2$ under Magnetic Fields
Creators: name: Mugikura, Masatoshi
name: Kusunose, Hiroaki
name: Kuramoto, Yoshio
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Consistent account is provided of strongly anisotropic properties in thermodynamics of MgB$_2$ under magnetic field $H$ using approximate analytic solution in the quasiclassical formalism. With the strength of the pairing interactions and the Fermi velocities of two bands as fitting parameters, it is possible to reproduce in wide regions of the phase diagram the $H$- and temperature dependences of relevant quantities such as the zero-energy density of states (ZEDOS), two energy gaps, the specific heat and the $H_{c2}$ anisotropy. It is demonstrated that the velocity ratio of two bands affects considerably the low-field behavior of the ZEDOS and energy gaps. The ratio also affects the high-temperature behavior of the $H_{c2}$ anisotropy. The anisotropy of the coherence length in the $σ$ band depends weakly on $H$ and $T$, whereas the coherence length in the $π$ band remains isotropic even in the presence of the inter-band coupling.
description: 6 pages, 5 figures, To appear in J. Phys. Soc. Jpn
Імовірнісні основи обробки даних. Тести для проведення підсумкового контролю знань студентів [Електронний ресурс] : навч. посіб. для студ. освітньо-професійної програми "Електронні системи мультимедіа та засоби Інтернету речей" / КПІ ім. Ігоря Сікорського ; уклад.: О.А. Батіна, Н.Ю. Філіпова
Creators: name: Batina, Elena
name: Filipova, Natalya
Publisher: name: figshare
Year: 2020
Subjects: subject: Statistics
subject: FOS: Mathematics
subject: Probability

description: Навчально-методичне видання містить набір тестових завдань, готових екзаменаційних варіантів для підсумкової атестації з дисципліни « Імовірнісні основи обробки даних». В посібнику представлені тести за темами та варіантами, тому він може стати в нагоді для семестрового контролю знань студентів для перевірки рівня засвоєння навчального матеріалу та спонукання до регулярної роботи. Перевірка та оцінювання відповідей на контрольні тести здійснюється автоматично системою дистанційного навчання, або викладачем. В кінці посібника є ключі відповідей до тестів.
Discovery of two-dimensional anisotropic superconductivity at KTaO$_3$ (111) interfaces
Creators: name: Liu, Changjiang
name: Yan, Xi
name: Jin, Dafei
name: Ma, Yang
name: Hsiao, Haw-Wen
name: Lin, Yulin
name: Bretz-Sullivan, Terence M.
name: Zhou, Xianjing
name: Pearson, John
name: Fisher, Brandon
name: Jiang, J. Samuel
name: Han, Wei
name: Zuo, Jian-Min
name: Wen, Jianguo
name: Fong, Dillon D.
name: Sun, Jirong
name: Zhou, Hua
name: Bhattacharya, Anand
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The unique electronic structure found at interfaces between materials can allow unconventional quantum states to emerge. Here we observe superconductivity in electron gases formed at interfaces between (111) oriented KTaO$_3$ and insulating overlayers of either EuO or LaAlO$_3$. The superconducting transition temperature, approaching 2.2 K, is about one order of magnitude higher than that of the LaAlO$_3$/SrTiO$_3$ system. Strikingly, similar electron gases at (001) KTaO$_3$ interfaces remain normal down to 25 mK. The critical field and current-voltage measurements indicate that the superconductivity is two dimensional. Higher mobility EuO/KTaO$_3$ (111) samples show a large in-plane anisotropy in transport properties at low temperatures prior to onset of superconductivity, suggesting the emergence of a stripe like phase where the superconductivity is nearly homogeneous in one direction, but strongly modulated in the other.
Small Fermi energy, zero point fluctuations and nonadiabaticity in MgB$_2$
Creators: name: Boeri, L.
name: Cappelluti, E.
name: Pietronero, L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Small Fermi energy effects are induced in MgB$_2$ by the low hole doping in the $σ$ bands which are characterized by a Fermi energy $E_{\rm F}^σ\sim 0.5$ eV. We show that, due to the particularly strong deformation potential relative to the $E_{2g}$ phonon mode, lattice fluctuations are reflected in strong fluctuations in the electronic band structure. Quantum fluctuations associated to the zero-point lattice motion are responsible for an uncertainty of the Fermi energy of the order of the Fermi energy itself, leading to the breakdown of the adiabatic principle underlying the Born-Oppenheimer approximation in MgB$_2$ even if $ω_{\rm ph}/E_{\rm F} \sim 0.1-0.2$, where $ω_{\rm ph}$ are the characteristic phonon frequencies. This amounts to a new nonadiabatic regime, which could be relevant to other unconventional superconductors.
description: to appear on Physical Review B
Strengthening of innovation activity at the cotton ginning industry in Uzbekistan
Creators: name: Tillyakhodjaev, Muzaffarkhodja
name: Tillyakhodjaev, Muzaffarkhodja
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Production Economics
subject: Cotton ginning industry
subject: output
subject: innovation.

description: Modernization of the companies engaged to primary cotton manufacturing represents some example of consequential innovative activities. Rapid growth of cotton ginning industry provides substantial positive influence on efficient operations of other adjacent industries of the national economy in Uzbekistan. The paper suggests ways to strengthen innovation activity in the industry to provide increase its competitiveness and develop export capacity of economy in general.
Seismic waveforms from CIGSIP project seismic array in the western Makran subduction zone
Creators: name: Chen, Jie
Publisher: name: Zenodo
Year: 2024

description: The Waveform_bag zip package includes waveform events for 5 mainshocks (seismic information in Table 1) recorded on 39 stations up to 2 hours after the beginning of the earthquake. Each station has five components: Z, N, E, R, and T. The instrumental response was not removed from each record, and the instrumental response file see the PZ_file.dat. The arrivals used for tremor localization were picked up manually (Figure S2), and the specific information is in the pick.txt file.
Self-induced passive nonreciprocal transmission by nonlinear bifacial dielectric metasurfaces
Creators: name: Jin, Boyuan
name: Argyropoulos, Christos
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The breaking of Lorentz reciprocity law is a non-trivial task, since it usually requires bulky magnets or complicated time-modulation dynamic techniques to be accomplished. In this work, we present a simple and compact design of a nonlinear bifacial dielectric metasurface to achieve strong self-induced passive nonreciprocal transmission without the use of external biases. The proposed design is ideal for free space optics applications, can operate under both incident polarizations, and require very low input excitation power to reach the nonreciprocal regime. It is composed of two passive silicon-based metasurfaces exhibiting Fano and Lorentzian resonances embedded in an ultrathin glass substrate. Highly asymmetric field enhancement is achieved with the proposed design that leads to strong nonreciprocity at low excitation intensities due to the large Kerr nonlinearity of silicon. Moreover, cascade designs are presented to further improve the insertion loss, broaden the nonreciprocal intensity range, and increase the isolation ratio by enhancing the transmission contrast. Finally, it is demonstrated that the proposed nonlinear metasurface is robust to fabrication imperfections and can achieve large isolation for a relative broad input power range even in the case of two incident waves impinging at the same time from both directions. The current work is expected to lead to new compact nonreciprocal nanophotonic devices, such as all-optical diodes, isolators, circulators, and ultrathin protective layers for sensitive optical components.
PPaaS: Privacy Preservation as a Service
Creators: name: Arachchige, Pathum Chamikara Mahawaga
name: Bertok, Peter
name: Khalil, Ibrahim
name: Liu, Dongxi
name: Camtepe, Seyit
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Personally identifiable information (PII) can find its way into cyberspace through various channels, and many potential sources can leak such information. Data sharing (e.g. cross-agency data sharing) for machine learning and analytics is one of the important components in data science. However, due to privacy concerns, data should be enforced with strong privacy guarantees before sharing. Different privacy-preserving approaches were developed for privacy preserving data sharing; however, identifying the best privacy-preservation approach for the privacy-preservation of a certain dataset is still a challenge. Different parameters can influence the efficacy of the process, such as the characteristics of the input dataset, the strength of the privacy-preservation approach, and the expected level of utility of the resulting dataset (on the corresponding data mining application such as classification). This paper presents a framework named \underline{P}rivacy \underline{P}reservation \underline{a}s \underline{a} \underline{S}ervice (PPaaS) to reduce this complexity. The proposed method employs selective privacy preservation via data perturbation and looks at different dynamics that can influence the quality of the privacy preservation of a dataset. PPaaS includes pools of data perturbation methods, and for each application and the input dataset, PPaaS selects the most suitable data perturbation approach after rigorous evaluation. It enhances the usability of privacy-preserving methods within its pool; it is a generic platform that can be used to sanitize big data in a granular, application-specific manner by employing a suitable combination of diverse privacy-preserving algorithms to provide a proper balance between privacy and utility.
Domain-Specific Compilers for Dynamic Simulations of Quantum Materials on Quantum Computers
Creators: name: Bassman, Lindsay
name: Gulania, Sahil
name: Powers, Connor
name: Li, Rongpeng
name: Linker, Thomas
name: Liu, Kuang
name: Kumar, T. K. Satish
name: Kalia, Rajiv K.
name: Nakano, Aiichiro
name: Vashishta, Priya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Simulation of the dynamics of quantum materials is emerging as a promising scientific application for noisy intermediate-scale quantum (NISQ) computers. Due to their high gate-error rates and short decoherence times, however, NISQ computers can only produce high-fidelity results for those quantum circuits smaller than some given circuit size. Dynamic simulations, therefore, pose a challenge as current algorithms produce circuits that grow in size with each subsequent time-step of the simulation. This underscores the crucial role of quantum circuit compilers to produce executable quantum circuits of minimal size, thereby maximizing the range of physical phenomena that can be studied within the NISQ fidelity budget. Here, we present two domain-specific quantum circuit compilers for the Rigetti and IBM quantum computers, specifically designed to compile circuits simulating dynamics under a special class of time-dependent Hamiltonians. The compilers outperform state-of-the-art general-purpose compilers in terms of circuit size reduction by around 25-30% as well as wall-clock compilation time by around 40% (dependent on system size and simulation time-step). Drawing on heuristic techniques commonly used in artificial intelligence, both compilers scale well with simulation time-step and system size. Code for both compilers is included to enhance the results of dynamic simulations for future researchers. We anticipate that our domain-specific compilers will enable dynamic simulations of quantum materials on near-future NISQ computers that would not otherwise be possible with general-purpose compilers.
description: 22 pages, 3 figures, 2 tables, 2 algorithms