cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 1 of Improvement on spatial resolution of a coseismic slip distribution using postseismic geodetic data through a viscoelastic inversion
Creators: name: Tomita, Fumiaki
name: Iinuma, Takeshi
name: Ohta, Yusaku
name: Hino, Ryota
name: Motoyuki Kido
name: Uchida, Naoki
Publisher: name: figshare
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geophysics

description: Additional file 1: Text S1. Elastic inversion method. Text S2. Pre-processing for observational data. Figure S1. Co- and post-seismic displacements for the strike-slip case in the elastic model. Figure S2. Contributions of viscoelastic relaxation and postseismic slip for the strike-slip case in the elastic model. Figure S3. Co- and post-seismic displacements for the strike-slip case in the viscoelastic model. Figure S4. Contributions of viscoelastic relaxation and postseismic slip for the strike-slip case in the elastic model. Figure S5. ABIC values assuming various combination of elastic thickness and viscosity for the strike-slip case. Figure S6. Co- and post-seismic slip distributions in the viscoelastic inversion without rake constraints for the strike-slip case. Figure S7. Co- and post-seismic displacements for the dip-slip case in the elastic model. Figure S8. Contributions of viscoelastic relaxation and postseismic slip for the dip-slip case in the elastic model. Figure S9. Co- and post-seismic displacements for the dip-slip case in the viscoelastic model. Figure S10. Contributions of viscoelastic relaxation and postseismic slip for the dip-slip case in the viscoelastic model. Figure S11. ABIC values assuming various combination of elastic thickness and viscosity for the dip-slip case. Figure S12. Co- and post-seismic slip distributions in the viscoelastic inversion without rake and negative postseismic slip constraints for the dip-slip case. Figure S13. Geodetic observation site distribution off Tohoku region. Figure S14. RMS (root mean square) misfits and ABIC values assuming various viscosities. Figure S15. Examples of timeseries of postseismic displacements at onshore GNSS sites. Table S1. Postseismic displacement rate at GNSS-A observation sites.
Maximal acceleration and black hole evaporation
Creators: name: Torromé, Ricardo Gallego
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 83D99, 83C7

description: We discuss how in certain theories of spacetime admitting a maximal proper acceleration Hawking radiation does not completely evaporate the black hole. The black hole remnant's mass depends on the inverse of the maximal acceleration. Furthermore, as a consequence of a duality between the minimum mass that a Schwarzschild black hole can have in such spacetimes and the maximal acceleration, we show that in certain theories with a maximal acceleration there must be an upper uniform bounds on the value of the force that can be exerted on test particles.
description: 9 pages
Additional supporting information results for geopolymer characterization from The use of zeolite-based geopolymers as adsorbent for copper removal from aqueous media
Creators: name: Baykara, Haci
name: Mendoza Solorzano, Maria de Lourdes
name: Delgado Echeverria, Jose Javier
name: Cornejo, Mauricio H.
name: Tapia-Bastidas, Clotario V.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Environmental Science
subject: 90499 Chemical Engineering not elsewhere classified
subject: FOS: Chemical engineering
subject: 30399 Macromolecular and Materials Chemistry not elsewhere classified
subject: FOS: Chemical sciences

description: Copper has been proven to have hazardous effects on human beings depending on its concentration levels. Recently, there has been a growing interest in developing geopolymers using local industrial minerals and by-products. However, research on the adsorption of heavy metals by geopolymer based on mordenite-rich tuffs is still limited. The geopolymer adsorbents have been synthesized using natural Ecuadorian zeolite-rich tuffs containing quartz, mordenite calcite and amorphous content with 20.8%, 28.5%, 4.2% and 46.4%, respectively. The geopolymers showed a maximum compressive strength of 26.86 MPa for 28 d or curing time. In the present study, an Ecuadorian zeolite-based geopolymer's removal capacity on copper ions in aqueous solutions, varying concentration and contact time were tested. Kinetic models were developed using pseudo first-order, pseudo second-order and the Elovich model. The adsorption data, using Cu2+ concentrations from 20 to 160 ppm, at 25°C were described by the Langmuir and Freundlich isotherms. Linear coefficient of determination (R2) results show that the Langmuir model fits the best. The attained adsorption capacity of 52.63 mg g−1 demonstrates the low-cost geopolymer's effectiveness for this study and its competitiveness compared with other studies. Adsorption kinetics follows the pseudo second-order kinetics model at the lower initial concentration of Cu2+.
A magyarországi baromfiágazat középtávú kilátásai
Creators: name: Nyars, Levente
name: Nyars, Levente
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Livestock Production/Industries
subject: baromfihús-termelés
subject: piac
subject: kilátások
subject: poultry production
subject: market
subject: prospects

description: Magyarország földrajzi fekvése miatt a fehérjeforrások beszerzési költségei magasabbak és a baromfihúsexport is költségesebb a szállítás miatt, de a fűtési és hűtési költségek is magasabbak, mint például Hollandiában, Brazíliában. A globalizáció kihívásai elől a magyar baromfiágazat sem térhet ki. Az árversenyben a nagy kapacitások, az olcsó munkaerő és az olcsó takarmány nagy előnyt jelent. A magyarországi alapanyag-termelés helyzetét nehezíti, hogy a gazdaságok döntő része nem rendelkezik földterülettel, vagyis nem képesek megtermelni a takarmányt, és gondot okoz a keletkezett trágya elhelyezése is. A hazai vágócsirke-termelés középtávon 230 ezer tonna körül alakul. A magas takarmányárak, valamint a „nem-termelő” beruházások költségvonzata miatt a hazai vágócsirke-termelés jövedelmezőségében rövid távon nem várható javulás, ezért a termelés stagnálása valószínűsíthető. Magyarország 2013-ra nettó importőri pozícióba kerülhet baromfihúsból, mivel az árversenyképesség gyenge. -------------------- Due to Hungary’s geographical location the costs of procuring sources of protein are higher and poultry exports are also more expensive, because of transport and higher heating and cooling expenses, than say in the Netherlands or Brazil. The Hungarian poultry sector cannot avoid the challenges of globalisation. Large capacity, cheap labour and cheap fodder all represent great advantages in price competition. Hungarian raw material production is made more difficult by the fact that the majority of farmers do not have land at their disposal; in other words, they are unable to produce fodder, while disposal of the manure produced also presents a problem. Domestic production of chickens for slaughter will be around 230,000 tonnes in the medium term. Due to high fodder prices and the expenses associated with “non-productive” investments, no short-term improvement can be expected in the profitability of domestic production of chickens for slaughter. For this reason, stagnation in production is to be expected. Hungary may become a net importer of poultry by 2013, due to weak price competitiveness.
The Red Giant Branch Tip and Bump of the Leo II dwarf spheroidal galaxy
Creators: name: Bellazzini, M.
name: Gennari, N.
name: Ferraro, F. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present V and I photometry of a 9.4' X 9.4' field centered on the dwarf spheroidal galaxy Leo II. The Tip of the Red Giant Branch is identified at I^{TRGB}=17.83 +/- 0.03 and adopting = -1.53 +/- 0.2 from the comparison of RGB stars with Galactic templates, we obtain a distance modulus (m-M)_0=21.84 +/- 0.13, corresponding to a distance D=233 +/- 15 Kpc. Two significant bumps have been detected in the Luminosity Function of the Red Giant Branch. The fainter bump (B1, at V=21.76 +/- 0.05) is the RGB bump of the dominant stellar population, while the actual nature of the brightest one (B2, at V=21.35 +/- 0.05) cannot be firmly assessed on the basis of the available data, it can be due to the Asymptotic Giant Branch Clump of the main population or it may be a secondary RGB bump. The luminosity of the main RGB bump (B1) suggests that the majority of RGB stars in Leo II belongs to a population that is ~4 gyr younger than the classical Galactic globular clusters. The stars belonging to the He-burning Red Clump are shown to be significantly more centrally concentrated than RR Lyrae and Blue Horizontal Branch stars, probing the existence of an age/metallicity radial gradient in this remote dwarf spheroidal.
description: Accepted for publication by MNRAS. Latex, 10 pages, 8 .ps figures
Are Homeowners Willing to Pay for "Origin-Certified" Plants in Water-Conserving Residential Landscaping?
Creators: name: Curtis, Kynda R.
name: Cowee, Margaret W.
name: Curtis, Kynda R.
name: Cowee, Margaret W.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Resource /Energy Economics and Policy
subject: drought resistance
subject: native plants
subject: origin labeling
subject: uncertainty
subject: willingness to pay

description: This study investigates the value of local origin-labeling for a nonfood product by evaluating Nevada homeowner purchase propensity for “NevadaGrown” native plants for water-conserving residential landscaping. Homeowner survey results illustrate that homeowners may be willing to pay as much as a 14% premium for origin-certified native plants. WTP estimates are higher when uncertain responses are incorporated into the bidding structure. Preferences for local production and drought resistance in plants are the primary drivers of purchasing decisions in the absence of uncertain responses, while income levels and preferences for natural plant appearance additionally affect purchasing decisions when uncertainty is incorporated.
X-ray emission evolution of the Galactic ultra-luminous X-ray pulsar Swift J0243.6+6124 during the 2017-2018 outburst observed by the MAXI GSC
Creators: name: Sugizaki, Mutsumi
name: Oeda, Motoki
name: Kawai, Nobuyuki
name: Mihara, Tatehiro
name: Makishima, Kazuo
name: Nakajima, Motoki
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This paper reports on the X-ray emission evolution of the ultra-luminous Galactic X-ray pulsar, Swift J0243.6+6124, during the 2017-2018 giant outburst observed by the MAXI GSC. The 2-30 keV light curve and the energy spectra confirm that the luminosity $L_\mathrm{X}$ reached $2.5\times 10^{39}$ erg s$^{-1}$, 10 times higher than the Eddington limit. When the source was luminous with $L_\mathrm{X}\gtrsim 0.9\times 10^{38}$ erg s$^{-1}$, it exhibited a negative correlation on a hardness-intensity diagram. However, two hardness ratios, a soft color ($=$ 4-10 keV / 2-4 keV) and a hard color ($=$ 10-20 keV / 4-10 keV), showed somewhat different behavior across a characteristic luminosity of $L_\mathrm{c}\simeq 5\times 10^{38}$ erg s$^{-1}$. The soft color changed more than the hard color when $L_\mathrm{X} < L_\mathrm{c}$, whereas the opposite was observed above $L_\mathrm{c}$. The spectral change above $L_\mathrm{c}$ was represented by a broad enhanced feature at $\sim 6$ keV. The pulse profiles made a transition from a single-peak to a double-peak one as the source brightened across $L_\mathrm{c}$. These spectral and pulse-shape properties can be interpreted by a scenario that the accretion columns on the neutron star surface, producing the Comptonized X-ray emission, gradually became taller as $L_\mathrm{X}$ increased. The broad 6 keV enhancement could be a result of cyclotron-resonance absorption at $\sim 10$ keV, corresponding to a surface magnetic field $B_\mathrm{s}\simeq 1.1\times 10^{12}$ G. The spin-frequency derivatives calculated with the Fermi GBM data showed a smooth correlation with $L_\mathrm{X}$ up to the outburst peak, and its linear coefficient is comparable to those of X-ray binary pulsars whose $B_\mathrm{s}$ are $(1-8)\times 10^{12}$ G. These results suggest that $B_\mathrm{s}$ of Swift J0243.6$+$6124 is a few times $10^{12}$ G.
description: 19 pages, 13 figures, accepted for publication in ApJ
Dynamic Relationships Between Farm Real Estate Values and Federal Farm Program Payments
Creators: name: Shaik, Saleem
name: Miljkovic, Dragan
name: Shaik, Saleem
name: Miljkovic, Dragan
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Land Economics/Use
subject: dynamics
subject: farm program payments
subject: farm real estate values
subject: U.S. data 1933 – 2006
subject: vector error correction model

description: This study examines the dynamic relationships among farm real estate values, farm returns, farm program payments, and real interest rates in an income capitalization model. Endogeneity is assumed among the variables in a dynamic framework because the direction of causality is unclear from a theoretical standpoint. The analysis encompasses the period beginning with the introduction of the first farm bill in 1933 and ending in 2006. Results indicate farm program payments have positive direct impacts in the short run and positive indirect impacts (via farm returns) in the long run on farm real estate values.
Additional file 1 of Association of Modic change types and their short tau inversion recovery signals with clinical characteristics- a cross sectional study of chronic low back pain patients in the AIM-study
Creators: name: Bråten, Lars Christian Haugli
name: Schistad, Elina Iordanova
name: Espeland, Ansgar
name: Kristoffersen, Per Martin
name: Haugen, Anne Julsrud
name: Marchand, Gunn Hege
name: Vetti, Nils
name: Pripp, Are Hugo
name: Kadar, Thomas Istvan
name: Skouen, Jan Sture
name: Grotle, Margreth
name: Grøvle, Lars
name: John-Anker Zwart
name: Brox, Jens Ivar
name: Storheim, Kjersti
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Additional file 1: Table S1. Distribution of categorical clinical characteristic within each Modic change type. Figure S1. Distribution of continuous clinical characteristics within each Modic change type. Table S2. Diagnostic accuracy of various clinical characteristics to separate type 1 from type 2 Modic changes. Table S3a. Volume of MC related STIR signal increase vs continuous clinical variables. Table S3b. Volume of Modic change related STIR signal increase vs dichotomous clinical variables. Table S4a. Maximum intensity of Modic change related STIR signal vs continuous clinical variables. Table S4b. Maximum intensity of Modic change related STIR signal vs dichotomous clinical variables. Table S5a. Number of endplates with Modic change related STIR signal increase vs continuous clinical variables. Table S5b. Number of endplates with Modic change related STIR signal increase vs dichotomous clinical variables.
Constraining jet theories using nova outbursts
Creators: name: Retter, Alon
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is commonly accepted that jets have not been observed in CVs so far. This absence was recently explained by their low mass transfer rates compared with objects with jets. A mass accretion limit for jets in CVs was proposed to be about 1e-7-1e-6 Mo/yr. There was, however, a report of evidence for jets in V1494 Aql=Nova Aql 1999/2. We estimate the mass transfer rate of this system around the reported event and show that it is consistent with the theoretical limit for jets. We further propose that the X-ray flare that was observed in this object may be connected with a jet as well. The appearance of jets in novae is actually expected since during the early decline from outburst some are alike supersoft X-ray sources, in which jets have been found. The detection of jets in novae also fits the suggestion that in addition to the presence of an accretion disk, a hot central source is required for the formation of jets. The observations of jets during the transition phase in V1494 Aql can be regarded as evidence for the early existence of the accretion disk in the system. This conclusion supports our previous suggestion for a link between the transition phase in novae and the re-establishment of the accretion disk. We further speculate that jets may be restricted to transient novae. If our ideas are confirmed, jets should be common in transient novae and may be formed several times during the transition phase and perhaps even long after it ends. In classical novae jets may be launched and observed in real time. As binary systems, these objects are easy to study. Novae may, therefore, be key systems in understanding the formation and evolution of jets and ideal targets to test and constrain jet theories.
description: 4 pages, 1 .eps figure, 2 .sty files, ApJL accepted, abstract was truncated to the 24 lines limit
04
Creators: name: Leonides Medeiros Neto
name: Santiago, João Gabriel De Lima
name: Mirele Moutinho Lima
name: Elyda Laisa Soares Xavier Freitas
name: Sônia Fortes
Publisher: name: figshare
Year: 2021
Subjects: Education

description: Por meio deste artigo, objetiva-se socializar o processo de construção e execução de um projeto de extensão de estudantes para estudantes, em que se discutem tecnologias na educação superior, no processo de apropriação de informações para o ensino-aprendizagem em época de pandemia por COVID 19. A opção metodológica da experiência extensionista nasceu de um período de estudos exploratórios sobre tecnologias durante o distanciamento social, originando a criação de tutoriais para socialização no grupo, repercutindo em cursos para socializar entre os estudantes do Campus Caruaru da Universidade de Pernambuco. Como resultado, houve participação representativa dos estudantes do campus e avaliações positivas dos cursos oferecidos.
Mixing of Quantum Walk on Circulant Bunkbeds
Creators: name: Lo, P.
name: Rajaram, S.
name: Schepens, D.
name: Sullivan, D.
name: Tamon, C.
name: Ward, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give new observations on the mixing dynamics of a continuous-time quantum walk on circulants and their bunkbed extensions. These bunkbeds are defined through two standard graph operators: the join G + H and the Cartesian product of graphs G and H.Our results include the following: 1. The quantum walk is average uniform mixing on circulants with bounded eigenvalue multiplicity. This extends a known fact about the cycles. 2. Explicit analysis of the probability distribution of the quantum walk on the join of circulants. This explains why complete partite graphs are not average uniform mixing, using the fact the complete n-vertex graph is the join of a 1-vertex graph and the (n-1)-vertex complete graph, and that the complete m-partite graph, where each partition has size n, is the m-fold join of the empty n-vertex graph. 3. The quantum walk on the Cartesian product of a m-vertex path P and a circulant G, is average uniform mixing if G is. This highlights a difference between circulants and the hypercubes. Our proofs employ purely elementary arguments based on the spectra of the graphs.
description: 12 pages, 3 figures
Additional file 1 of The accelerated aging model reveals critical mechanisms of late-onset Parkinson’s disease
Creators: name: Shiyan Li
name: Hongxin Liu
name: Shiyu Bian
name: Xianzheng Sha
name: Yixue Li
name: Wang, Yin
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Computational Biology

description: Additional file 1 : Figure S1. The learning curve and ROC curve in the traditional PD predictor. Figure S2. The heatmap about the differential correlation coeffecients between the aging biomarkers and PD biomarkers. Xlable reprensents PD markers, Ylable represents aging markers.
Pentaquarks: Review on Models and Solitonic Calculations of Antidecuplet Magnetic Moments
Creators: name: Goeke, Klaus
name: Kim, Hyun-Chul
name: Praszałowicz, Michał
name: Yang, Ghil-Seok
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: After a quick look at the present status of experiments we shortly review in a first step the ongoing discussions on some of the basic theoretical approaches to pentaquarks: Chiral solitons, Large-$N_c$ considerations, quark models, and lattice gauge approaches. In a second step we apply the chiral quark-soliton approach including linear $m_s$-corrections to the calculation of magnetic moments of the baryons of the anti-decuplet. In this approach the parameters are fixed solely by experimental data for the magnetic moments of the baryon octet and for the masses of the octet, decuplet and of $Θ^{+}$. The magnetic moment of $Θ^{+}$ depends rather strongly on the pion-nucleon sigma term and reads $-1.19 {\rm n.m.}$ to $-0.33 {\rm n.m.}$ for $Σ_{πN} = 45$ and 75 MeV respectively. As a byproduct the strange magnetic moment of the nucleon is obtained with a value of $μ^{(s)}_N =+0.39$ n.m.
description: 24 pages, 2 figures, To be published in Prog.Part. Nucl. Phys
03
Creators: name: Xavier, Maria Eduarda De Lima
name: Campos, Gleyson Rhuan Nascimento
name: Monteiro, Kayo Henrique De Carvalho
name: Maicon Herverton Lino Ferreira Da Silva Barro
name: Endo, Patricia Takako
Publisher: name: figshare
Year: 2021
Subjects: subject: 170203 Knowledge Representation and Machine Learning
subject: FOS: Psychology

description: Instituições de saúde, como a Organização Mundial da Saúde (OMS), incluem algumas ferramentas de redes sociais (como Facebook, Twitter e outras) como parte crucial na divulgação de informações confiáveis sobre saúde, monitoramento de crises de saúde e contenção de boatos online. No Brasil, para combater a disseminação de notícias falsas, o Ministério da Saúde lançou um programa para verificar veracidade de mensagens online. No entanto, a complexidade de lidar com a comunicação durante uma crise de saúde é bastante alta, pois as mídias sociais, em comparação com as mídias tradicionais, são mais difíceis de monitorar, rastrear e analisar. Diante desse contexto, este trabalho apresenta uma análise sentimental a partir de um conjunto de dados composto por 1.285 rumores e não rumores em português do Brasil identificados por jornalistas e pelo Ministério da Saúde do Brasil.
What Drives Commodity Prices More: Oil Demand or Supply Shocks?
Creators: name: Mutuc, Maria Erlinda M.
name: Pan, Suwen
name: Hudson, Darren
name: Mutuc, Maria Erlinda M.
name: Pan, Suwen
name: Hudson, Darren
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: cotton
subject: wheat
subject: corn
subject: soybeans
subject: crude oil
subject: oil price shocks
subject: demand shocks
subject: supply shocks
subject: structural vector autoregression (SVAR)

description: This paper shows that the response of agricultural commodity prices in the U.S. related to fluctuations in oil prices in the international market may differ greatly depending on whether the increase is driven by demand or supply shocks in the crude oil market. In the long-run, around 2-7 percent of the variability in grains, oilseeds, and cotton prices can be attributed to shocks to aggregate demand for industrial commodities while none can be traced to oil supply shocks. This paper improves on the lack of economic structure in VAR models employed so far, and on the issue of short datasets, contributes to the nascent empirical evidence, and identifies the transmission of different types of oil price shocks to movements in agricultural prices in a SVAR framework using monthly data from 1976 to 2008.
Casimir Force on a Micrometer Sphere in a Dip: Proposal of an Experiment
Creators: name: Brevik, I.
name: Dahl, E. K.
name: Myhr, G. O.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The attractive Casimir force acting on a micrometer-sphere suspended in a spherical dip, close to the wall, is discussed. This setup is in principle directly accessible to experiment. The sphere and the substrate are assumed to be made of the same perfectly conducting material.
description: 11 pages, 1 figure; to appear in J. Phys. A: Math. Gen
Chaos-Based Multicarrier VLC Modulator With Compensation of LED Nonlinearity
Creators: name: Escribano, Francisco J.
name: Sáez-Landete, José
name: Wagemakers, Alexandre
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The massive deployment of light-emitting diode (LED) lightning infrastructure has opened the opportunity to reuse it as visible light communication (VLC) to leverage the current RF spectrum crisis in indoor scenarios. One of the main problems in VLC is the limited dynamic range of LEDs and their nonlinear response, which may lead to a severe degradation in the communication, and more specifically in the bit error rate (BER). This is aggravated by the extensive usage of multicarrier multiplexing, based on optical orthogonal frequency division multiplexing (O-OFDM), characterized by a high peak-to-average power ratio. Here, we present a chaos-based coded modulation (CCM) setup specifically adapted to the LED nonlinearities. It replaces the usual modulation, while keeping the multicarrier O-OFDM structure unchanged. First, we obtain a semi-analytical bound for the bit error probability, taking into account the LED nonlinear response. The bound results particularly tight for the range of signal-to-noise ratio of interest. Then, we propose a method to design the modulator based on optimization techniques. The objective function is the semi-analytical bound, and the optimization is applied to a parameterization of the CCM conjugation function. This appropriately shapes the chaotic waveform and leads to BER improvements that outperform classical counterparts under ideal predistortion.
description: 9 pages, 7 figures
02
Creators: name: Santos, Diego Furtado M.
name: Wylliams Barbosa Santos
Publisher: name: figshare
Year: 2021
Subjects: subject: 80505 Web Technologies (excl. Web Search)
subject: FOS: Computer and information sciences

description: Web-based applications have become one of the most popular platforms in the world where users can easily access any application. This means a large number of users are connected from a network, transacting sensitive data and valuable information constantly. Therefore, ensuring these data security has become a challenging path for software tests professionals; there are a lot of technical and behavior implications and security of browser-based applications as compared to conventional client-based architecture is not the same, resulting in huge demand for testers. This research aims to build a qualitative study to Web Application Security Testing based on the opinion of Software Security Specialists, which will help testers to address their strategies within the software development lifecycle, reducing gaps in their strategy and assurance more reliable release. From Research Interview and Thematic Analysis techniques, a set of criteria has been identified and then measure for each ranking criterion. The contribution of this paper can be manipulated primarily by the testers who may benefit from the iterative software development approach to security testing. The testers will better understand the significance of the security tests and they will learn how to productively embed the tests into the development lifecycle. Last but not least, the testers may use the outcomes of this paper as support for companies struggling with a new perspective of security testing embedded in the software development process.
CAN DOMESTICATION OF WILDLIFE LEAD TO CONSERVATION? THE ECONOMICS OF TIGER FARMING IN CHINA
Creators: name: Abbott, Brant
name: Van Kooten, G. Cornelis
name: Abbott, Brant
name: Van Kooten, G. Cornelis
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: endangered species and extinction
subject: wildlife farming
subject: economics of natural
subject: mathematical bioeconomics

description: Tigers are a threatened species that might soon disappear in the wild. Not only are tigers threatened by deteriorating and declining habitat, but poachers continue to kill tigers for traditional medicine, decoration pieces and so on. Although international trade in tiger products has been banned since 1987 and domestic trade within China since 1993, tigers continue to be poached and Chinese entrepreneurs have established tiger farms in anticipation of their demise. While China desires to permit sale of tiger products from captive-bred tigers, this is opposed on the grounds that it likely encourages illegal killing. Instead, wildlife conservationists lobby for more spending on anti-poaching and trade-ban enforcement. In this study, a mathematical bioeconomic model is used to investigate the issue. Simulation results indicate that, unless range states are characterized by institutions (rule of law, low corruption) similar to those found in the richest countries, reliance on enforcement alone is insufficient to guarantee survival of wild tigers. Likewise, even though conservation payments could protect wild tigers, the inability to enforce contracts militates against this. Our model indicates that wild tigers can be protected by permitting sale of products from tiger farms, although this likely requires the granting of an exclusive license to sellers. Finally, it is possible to tradeoff enforcement effort and sale of products from captive-bred animals, but such tradeoffs are worsened by deteriorating tiger habitat.
Self-supervised Learning: Generative or Contrastive
Creators: name: Liu, Xiao
name: Zhang, Fanjin
name: Hou, Zhenyu
name: Wang, Zhaoyu
name: Mian, Li
name: Zhang, Jing
name: Tang, Jie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Deep supervised learning has achieved great success in the last decade. However, its deficiencies of dependence on manual labels and vulnerability to attacks have driven people to explore a better solution. As an alternative, self-supervised learning attracts many researchers for its soaring performance on representation learning in the last several years. Self-supervised representation learning leverages input data itself as supervision and benefits almost all types of downstream tasks. In this survey, we take a look into new self-supervised learning methods for representation in computer vision, natural language processing, and graph learning. We comprehensively review the existing empirical methods and summarize them into three main categories according to their objectives: generative, contrastive, and generative-contrastive (adversarial). We further investigate related theoretical analysis work to provide deeper thoughts on how self-supervised learning works. Finally, we briefly discuss open problems and future directions for self-supervised learning. An outline slide for the survey is provided.
description: 24 pages, 19 figures
Additional file 1 of A glucotolerant β-glucosidase from the fungus Talaromyces amestolkiae and its conversion into a glycosynthase for glycosylation of phenolic compounds
Creators: name: Méndez-Líter, Juan Antonio
name: Nieto-Domínguez, Manuel
name: Toro, Beatriz Fernández De
name: Santana, Andrés González
name: Prieto, Alicia
name: Asensio, Juan Luis
name: Cañada, Francisco Javier
name: Eugenio, Laura Isabel De
name: Martínez, María Jesús
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1: Figure S1. Molecular structure of the acceptors selected for transglycosylation and ESI–MS data of glycosides obtained by transglycosylation Figure S2. Thin layer chromatography of the different compounds in transglycosylation reactions using BGL-1-E521G. Figure S3. Alignment of BGL-1 amino acid sequence. Figure S4. NMR Spectra of the EGCG glycoside. Figure S5. NMR Spectra of the EGCG plus sophorose. Figure S6. NMR Spectra and data of the Glucose-Glucose-pNP derivative. Figure S7. NMR Spectra and data of the Glucose-Galactose-pNP derivative. Figure S8. NMR Spectra and data of the Glucose-Xylose-pNP derivative. Figure S9. Data used for kinetic calculations of inhibition constant by glucose of BGL-1.
01
Creators: name: Silva, Alessandro Meireles Da
name: Cavalcanti, Roberto Carlos Ferraz
name: Cunha, José Adson O. G.
name: Wylliams Barbosa Santos
Publisher: name: figshare
Year: 2021
Subjects: subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: A expansão da tecnologia trouxe desafios relacionados à entrega contínua e qualidade do produto para as empresas fabricantes e desenvolvedoras de software. A partir deste cenário se desenvolveu o papel de analista de qualidade, responsavel direto pela manutenção e garantia da qualidade no ciclo de vida do produto. Este trabalho apresenta uma análise qualitativa acerca deste perfil, traçando um paralelo entre competências, habilidades, técnicas, ferramentas e processos utilizados no dia a dia da empresa. Para este fim, foi conduzido um estudo de caso. Dados foram coletados por meio de entrevistas e posteriormente analisados por meio de uma análise temática. Como resultado, verificou-se que tais profissionais convergem no que diz respeito às competências necessárias para o sucesso em um time ágil. Foram apontadas também as dificuldades encontradas por esses profissionais no modelo ágil de desenvolvimento de software.
Random Stable Matchings
Creators: name: Mertens, Stephan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The stable matching problem is a prototype model in economics and social sciences where agents act selfishly to optimize their own satisfaction, subject to mutually conflicting constraints. A stable matching is a pairing of adjacent vertices in a graph such that no unpaired vertices prefer each other to their partners under the matching. The problem of finding stable matchings is known as stable marriage problem (on bipartite graphs) or as stable roommates problem (on the complete graph). It is well-known that not all instances on non-bipartite graphs admit a stable matching. Here we present numerical results for the probability that a graph with $n$ vertices and random preference relations admits a stable matching. In particular we find that this probability decays algebraically on graphs with connectivity $Θ(n)$ and exponentially on regular grids. On finite connectivity Erdös-Rényi graphs the probability converges to a value larger than zero. Based on the numerical results and some heuristic reasoning we formulate five conjectures on the asymptotic properties of random stable matchings.
description: 11 pages, 9 figures (v2: minor changes, published version)
Determinants of Meats Purchase Behavior by Ethnic Groups
Creators: name: Garcia-Jimenez, Carlos I.
name: Mishra, Ashok K.
name: Garcia-Jimenez, Carlos I.
name: Mishra, Ashok K.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: Industrial Organization
subject: Marketing
subject: FOS: Economics and business
subject: consumer behavior
subject: marketing
subject: food demand
subject: Hispanic food
subject: hispanic food market
subject: Latin foods
subject: comida latina
subject: alimentos
subject: ethnic foods

description: Farmers and food companies need to assess their production and marketing strategies for nurturing business opportunities that will arise from the simultaneous increase in population and income of Hispanics in the United States. Previous studies on demand for meat products have not received much attention on the determinants of meats purchase behavior by Hispanics in relation to other ethnic groups. This study investigates the impact of ethnicity and the determinants of meats purchase behavior in the U.S. by using single Probit equations. The analyzed data comes from the U.S. Consumer Expenditure Survey. The results indicate that ethnicity plays an important role in the purchase behavior of meat products, as well as household size and income.
s02
Creators: name: Marcísio Silva
name: Mylena Costa
name: Elyda Laisa Soares Xavier Freitas
name: Sônia Fortes
name: Mirele Moutinho Lima
Publisher: name: figshare
Year: 2021
Subjects: Education

description: Em dezembro de 2019 iniciou-se o grande surto de SARS-COV 2 (COVID 19). Ao atingir o Brasil, o isolamento social foi a primeira medida preventiva adotada e atividades suspensas. Levou algum tempo até que o ensino online fosse adotado em algumas entidades de ensino, mas, com a mudança, um universo de oportunidades se abriu com novos conceitos e diversas ferramentas a serem exploradas nessa modalidade de ensino. Tendo isso em vista, este artigo tem por objetivo apresentar um curso com enfoque no ensino das ferramentas Kahoot e Play Posit, desenvolvido por alunos do campus Caruaru da UPE. Este resumo estendido abordará os métodos usados para construir o curso e como ele foi estruturado, bem como os resultados esperados pela sua execução.
Technology diffusion, farm size structure and regional land competition in dynamic partial equilibrium
Creators: name: Lehtonen, Heikki
name: Lehtonen, Heikki
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Farm Management
subject: Land Economics/Use
subject: agricultural sector modelling
subject: technical change
subject: land competition
subject: manure nutrients
subject: agri-environmental policies

description: The methodological challenge addressed here is modelling multi-regional development of agricultural production and structural change, including land competition, in a dynamic partial equilibrium setting. The model applied in this study is a dynamic recursive model simulating the development of the agricultural investments and markets annually from 1995 up to 2020. Results show that land prices play a role when animal production increases in most competitive regions and gradually decreases in less productive regions. The framework can be applied when analysing how various new techniques, practices and regulations for land use affect regional production structures.
Additional file 1 of Sex difference in the prognostic role of body composition parameters in Taiwanese patients undergoing transcatheter aortic valve implantation
Creators: name: Hsiao-Huang Chang
name: Po-Lin Chen
name: Hsin-Bang Leu
name: I-Ming Chen
name: Nai-Yuan Wu
name: Chen, Ying-Hwa
Publisher: name: figshare
Year: 2020
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: Computational Biology
subject: Cardiology

description: Additional file 1: Table S1. Multivariate analysis based on New BMI for overall and one-year all-cause cumulative mortality.
Kaluza-Klein Theory without Extra Dimensions: Curved Clifford Space
Creators: name: Pavsic, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A theory in which 16-dimensional curved Clifford space (C-space) provides a realization of Kaluza-Klein theory is investigated. No extra dimensions of spacetime are needed: "extra dimensions" are in C-space. It is shown that the covariant Dirac equation in C-space contains Yang-Mills fields of the U(1)xSU(2)xSU(3) group as parts of the generalized spin connection of the C-space.
description: 15 pages; References added, typos corrected
Determinants of farm exit: A comparison between Europe and United States
Creators: name: Mishra, Ashok K.
name: Raggi, Meri
name: Viaggi, Davide
name: Mishra, Ashok K.
name: Raggi, Meri
name: Viaggi, Davide
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Farm Management
subject: Land Economics/Use
subject: farm exit
subject: logit model
subject: US
subject: EU

description: In the last three decades, European Union (EU) agriculture has been characterized by major exit of farming households from agriculture. In some areas the share of exit has been as high as 40%. Similar pattern has also been observed in the United States (US), where the exit rates are about 9-10 percent per year. Understanding the exit behavior is a key to the future farm structure, management of abandoned land, depopulation of rural areas, and agricultural policy, including government program payments. The main objective of this paper is to review the theoretical background and empirically estimate the determinants of exit decisions through a comparative econometric analysis in the US and the EU.
description: Paper removed temporarily by author 8/19/11.
Distribution of Dongxiang Folk Story Resources in Dongxiang Autonomous County, Gansu Province
Creators: name: Ashida
name: Ashida
Publisher: name: Unknown
Year: 2020
Subjects: subject: Agribusiness
subject: Field survey, Dongxiang ethnic minority group, Folk story, Residual distribution

description: Based on the field survey in Dongxiang Autonomous County of Gansu Province in 2017 and 2018, we found and obtained rich effective Dongxiang folk story resources. These first-hand story resources remain in relatively remote areas of the county, with elderly women in the Dongxiang Language Reservation Area in the central and east of the county as the main oral inheritance group. The distribution characteristics of folk stories: few people preserve most stories, while most people could not narrate complete stories, and few traditional story resources are widespread. At present, due to various reasons, the oral environment and inheritance status of folk stories in Dongxiang County is not optimistic, the survey is difficult, and the story resources are scattered, and there is a tendency to gradually disappear. Therefore, it is necessary to actively protect the existing Dongxiang folk artists and folk story resources, and to conduct digital sorting of these resources in time.
Experimental semi-autonomous eigensolver using reinforcement learning
Creators: name: Pan, C. -Y.
name: Hao, M.
name: Barraza, N.
name: Solano, E.
name: Albarran-Arriagada, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The characterization of observables, expressed via Hermitian operators, is a crucial task in quantum mechanics. For this reason, an eigensolver is a fundamental algorithm for any quantum technology. In this work, we implement a semi-autonomous algorithm to obtain an approximation of the eigenvectors of an arbitrary Hermitian operator using the IBM quantum computer. To this end, we only use single-shot measurements and pseudo-random changes handled by a feedback loop, reducing the number of measures in the system. Due to the classical feedback loop, this algorithm can be cast into the reinforcement learning paradigm. Using this algorithm, for a single-qubit observable, we obtain both eigenvectors with fidelities over 0.97 with around 200 single-shot measurements. For two-qubits observables, we get fidelities over 0.91 with around 1500 single-shot measurements for the four eigenvectors, which is a comparatively low resource demand, suitable for current devices. This work is useful to the development of quantum devices able to decide with partial information, which helps to implement future technologies in quantum artificial intelligence.
description: 12 + 3 pages, 5 figures
s01
Creators: name: Filipe Tabosa Da Silva,
name: Melo, Ana Carolina Candido De
name: Soares, Rafael Henrique Alves
name: Fagundes, Roberta A. De A.
name: Wylliams Barbosa Santos
Publisher: name: figshare
Year: 2021
Subjects: subject: Computer Software
subject: FOS: Computer and information sciences
subject: Computer Engineering

description: Dívida Técnica (DT) é uma metáfora criada para exemplificar os perigos de artefatos imaturos ou incompletos presentes no código-fonte de um projeto de software. A utilização de DT acelera o desenvolvimento do projeto, porém, se não tratada, pode trazer prejuízos em longo prazo. Este trabalhoapresenta os resultados preliminares de quatro ciclos de uma pesquisa-ação com foco no gerenciamento de DT de código em uma empresa durante a pandemia do COVID-19.
Patterns of social anxiety in Chinese and European Canadian students
Creators: name: Hsu, Lorena
Publisher: name: University of British Columbia
Year: 2009

description: Although epidemiological data show that Asians are less often diagnosed with social phobia than are North Americans, North American studies show that Asians self-report higher levels of social anxiety than their European heritage counterparts. The present study examined this apparent discrepancy in an undergraduate sample of: a) students of Chinese heritage born in Hong Kong or Taiwan (N= 65), b) Canadian-born students of Chinese heritage (N= 51), and c) Canadianborn students of European heritage (N= 62). Participants completed a questionnaire battery as well as a face-to-face interview that assessed levels of social anxiety and impairment. Results showed that foreign-born Chinese participants reported significantly greater social anxiety and impairment than students of European heritage in both the questionnaire and interview format. The same general pattern was found among participants who had clinically severe levels of social anxiety.