cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Social Networks as an Integration Tool in Rural Areas – Agricultural Enterprises of the Czech Republic
Creators: name: Cervenkova, Eva
name: Simek, Pavel
name: Vogeltanzova, Tereza
name: Stoces, Michal
name: Cervenkova, Eva
name: Simek, Pavel
name: Vogeltanzova, Tereza
name: Stoces, Michal
Publisher: name: Unknown
Year: 2011
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods
subject: Social media
subject: social network
subject: Facebook
subject: Twitter
subject: Google Buzz
subject: agrarian sector

description: Social networks have been growing at a rapid pace. Social media represent one of the most significant phenomena of today's world and are more and more integrated from the private sphere into the commercial one (e.g. into marketing where social media already play a substantial role). The present paper is aimed at introducing an initial study on the use of social media in agricultural enterprises. The study was thus targeted at agricultural enterprises – both legal entities (public limited companies, limited liability companies and last but not least cooperatives) and natural persons (farmers) that farm the total area of more than 100 hectares (a basic selection criterion of the survey). This interesting study was conducted by means of a questionnaire survey that included information on social media awareness, development and use within the respective group of respondents (bigger agricultural enterprises). The paper deals with social media as such and naturally with the survey results. The data retrieved from the questionnaire were used not only for monitoring social networks integration in the agrarian sector (important factor in rural areas) but as well for exploring the potential of modern information tools in agriculture promotion. The survey has been carried out in mutual cooperation of the Department of Information Technologies with the Information and Consulting Centre, Faculty of Economics and Management, Czech University of Life Sciences Prague.
Tracing the cosmic history by Gauss-Bonnet gravity
Creators: name: de Martino, Ivan
name: De Laurentis, Mariafelicia
name: Capozziello, Salvatore
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Cosmic history can be traced considering further curvature contributions inside the gravitational action. Assuming that standard General Relativity can be extended by other curvature invariants, we discuss the possibility that an action containing higher-order curvature terms can fit, in principle, the whole universe evolution. In particular, a theory like $F(R,{\cal G})$, with $R$ the Ricci scalar and $\cal G$ the Gauss-Bonnet topological term, contains all the curvature invariants that, depending on the energy regime, can address inflation, matter dominated and dark energy regimes. In this paper, we investigate this possibility considering how $F(R,{\cal G})$ models can lead gravity from ultraviolet to infrared scales. Specifically, we will take into account a cosmographic approach for this purpose.
description: 16 pages, 2 figures. Accepted for publication on Physical Review D
Application of Electronic Data Collection in Research of Socio-Economic Importance of Forest Functions
Creators: name: Pospisilova, Vendula
name: Pospisil, Josef
name: Hucko, Jan
name: Pospisilova, Vendula
name: Pospisil, Josef
name: Hucko, Jan
Publisher: name: Unknown
Year: 2011
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: E-survey
subject: forest functions
subject: assessment
subject: web development
subject: agile methods.

description: The main topic of the project is the application of electronic data collection using the web interface to the research of the socio-economic importance of forest functions. A unique system for data collection, the provision of evidence and processing was designed. The system leads to the simplification of the research, to the possibility of extending the investigation in the field and to the survey of forest visit trends in the long term. The approach will enable the formation of an extended database. The paper describes the steps of the project’s implementation. The e-survey started at the end of September 2010 continues to this time.
Randomized Kaczmarz converges along small singular vectors
Creators: name: Steinerberger, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Functional Analysis (math.FA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Randomized Kaczmarz is a simple iterative method for finding solutions of linear systems $Ax = b$. We point out that the arising sequence $(x_k)_{k=1}^{\infty}$ tends to converge to the solution $x$ in an interesting way: generically, as $k \rightarrow \infty$, $x_k - x$ tends to the singular vector of $A$ corresponding to the smallest singular value. This has interesting consequences: in particular, the error analysis of Strohmer \& Vershynin is optimal. It also quantifies the `pre-convergence' phenomenon where the method initially seems to converge faster. This fact also allows for a fast computation of vectors $x$ for which the Rayleigh quotient $\|Ax\|/\|x\|$ is small: solve $Ax = 0$ via Randomized Kaczmarz.
Understanding and Adaptation of the Concept of Competences in the Water Sector
Creators: name: Thanopoulos, Charalampos
name: Manouselis, Nikos
name: Stracke, Christian M.
name: Thanopoulos, Charalampos
name: Manouselis, Nikos
name: Stracke, Christian M.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Competence
subject: water competence model
subject: water sector

description: Competence models are proved as the most sufficient tool in order to support organizations and companies to achieve their main goals (e.g. selection of the most competent employees) and to enhance the offering training opportunities and help individuals with their personal performance. This article focuses on the identification of the main issues that will support the development of a successful and adaptable competence model in the water sector. An introductory overview of competence, competence model and competence modeling process is following by the investigation of the usefulness of the competence model in all the water sector domains. The scope of this study is the analysis of the water sector requirements for competence modeling, based on the initial results of a European survey that takes place in the context of EU project WACOM (www.wacom-project.eu).
Pseudospin resonances reveal synthetic spin-orbit interaction
Creators: name: Rohrmeier, Christoph
name: Donarini, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate a spin-full double quantum dot (DQD) coupled to the leads in a pseudospin valve configuration. The interplay of interaction and interference produces in the stability diagram a rich variety of resonances, modulated by the system parameters. In presence of ferromagnetic leads and pseudospin anisotropy, those resonances split, turn into dips and acquire a Fano shape thus revealing a synthetic spin-orbit coupling induced on the DQD. A set of rate equations derived for a minimal model captures those features. The model accurately matches the numerical results obtained for the full system in the framework of a generalized master equation and calculated within the cotunneling approximation.
Solitons and decoherence in left-handed metamaterials
Creators: name: Marklund, M.
name: Shukla, P. K.
name: Stenflo, L.
name: Brodin, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We present exact electromagnetic solitary pulses that can be experimentally obtained within nonlinear left-handed metamaterials. The effect of pulse decoherence on the modulation instability of partially incoherent electromagnetic waves is also investigated. The results may contribute to a better understanding of nonlinear electromagnetic pulse propagation in media with negative index of refraction.
description: 3 pages, references added and typos corrected
Harmonic Maass forms associated with CM newforms
Creators: name: Ehlen, Stephan
name: Li, Yingkun
name: Schwagenscheidt, Markus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: In this paper, we use a regularized theta lifting to construct harmonic Maass forms corresponding to binary theta functions of weight $k \ge 2$ under the $ξ$-operator. As a result, we show that their holomorphic parts have algebraic Fourier coefficients, with compatible Galois action. As an application, we prove rationality properties of coefficients of harmonic Maaass forms corresponding to CM newforms, answering a question of Bruinier, Ono and Rhoades.
description: Final version
A spectral interpretation for the zeros of the Riemann zeta function
Creators: name: Meyer, Ralf
Publisher: name: arXiv
Year: 2004
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M26

description: Based on work of Alain Connes, I have constructed a spectral interpretation for zeros of L-functions. Here we specialise this construction to the Riemann zeta function. We construct an operator on a nuclear Frechet space whose spectrum is the set of non-trivial zeros of zeta. We exhibit the explicit formula for the zeros of the Riemann zeta function as a character formula.
description: 15 pages. Corrected a few typos and added clarifying footnotes to the published version
Hodge-type integrals on moduli spaces of admissible covers
Creators: name: Cavalieri, Renzo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14C30, 32S25, 58A14

description: We study Hodge Integrals on Moduli Spaces of Admissible Covers. Motivation for this work comes from Bryan and Pandharipande's recent work on the local GW theory of curves, where analogouos intersection numbers, computed on Moduli Spaces of Relative Stable Maps, are the structure coefficients for a Topological Quantum Field Theory. Admissible Covers provide an alternative compactification of the Moduli Space of Maps, that is smooth and doesn't contain boundary components of excessive dimension. A parallel, yet different, TQFT, can then be constructed. In this paper we compute, using localization, the relevant Hodge integrals for admissible covers of a pointed sphere of degree 2 and 3, and formulate a conjecture for general degree. In genus 0, we recover the well-known Aspinwall Morrison formula in GW theory.
description: This is the version published by Geometry & Topology Monographs on 21 September 2007
The Role of Redundant Bases and Shrinkage Functions in Image Denoising
Creators: name: Hel-Or, Yacov
name: Ben-Artzi, Gil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Wavelet denoising is a classical and effective approach for reducing noise in images and signals. Suggested in 1994, this approach is carried out by rectifying the coefficients of a noisy image in the transform domain, using a set of scalar shrinkage function (SFs). A plethora of papers deals with the optimal shape of the SFs and the transform used, where it is known that applying the SFs in redundant bases provides improved results. This paper provides a complete picture of the interrelations between the transform used, the optimal shrinkage functions, and the domains in which they are optimized. In particular, we show that for subband optimization, where each SF is optimized independently for a particular band, optimizing the SFs in the spatial domain is always better than or equal to optimizing the SFs in the transform domain. For redundant bases, we provide the expected denoising gain we may achieve, relative to the unitary basis, as a function of the redundancy rate.
PROTOCOLO ANTIBIOTICOS.docx
Creators: name: Vasco-Morales, Santiago
name: Medina-Poma, Sandra
name: Salazar, Katherine
name: Toapanta Pinta, Paola
Publisher: name: figshare
Year: 2021
Subjects: subject: 111403 Paediatrics
subject: FOS: Clinical medicine

description: Objetivo: El objetivo de esta revisión panorámica es describir cuales son los programas de Administración de Antibióticos que se utilizan con el fin de y evitar la prescripción innecesaria de antibióticos de amplio espectro y disminuir el uso de estos fármacos en las unidades de neonatología. Introducción: Los antibióticos en el período neonatal son los fármacos que más ampliamente se utilizan en las unidades de neonatología, sin embargo, su uso y el cambio de estos por antibióticos de espectro extendido, muchas veces no están justificados. Criterios de inclusión: Pacientes neonatos hospitalizados, donde se encuentre implementado un programa de Administración de Antibióticos. Métodos: Se buscara en las bases de datos MEDLINE, EMBASE, WEB OF SCIENCE y SCIELO, desde enero del 2010, ya sean estudios experimentales u observacionales, sin restricción de idioma. Resultados: Se informará los principales resultados de la revisión en relación con el objetivo y pregunta. Así como el número y el tipo de evidencia incluida, y cualquier característica pertinente de cada estudio. Palabras clave (De CS): Neonatos, antibioticoterapia, uso racional de medicamentos
The Dark Side of 4321
Creators: name: Guadagnoli, Diego
name: Reboud, Meril
name: Stangl, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The evidence of Dark Matter (DM) is one of the strongest observational arguments in favour of physics beyond the Standard Model. Despite expectations, a similar evidence has been lacking so far in collider searches, with the possible exception of $B$-physics discrepancies, a coherent set of persistent deviations in a homogeneous dataset consisting of $b \to c$ and $b \to s$ semi-leptonic transitions. We explore the question whether DM and the $B$ discrepancies may have a common origin. We do so in the context of the so-called 4321 gauge model, a UV-complete and calculable setup that yields a $U_1$ leptoquark, the by far most successful single mediator able to explain the $B$ anomalies, along with other new gauge bosons, including a $Z^\prime$. Adding to this setup a 'minimal' DM fermionic multiplet, consisting of a ${\bf 4}$ under the 4321's $SU(4)$, we find the resulting model in natural agreement with the relic-density observation and with the most severe direct-detection bounds, in the sense that the parameter space selected by $B$ physics is also the one favoured by DM phenomenology. The DM candidate is a particle with a mass in the WIMP range, freeze-out dynamics includes a co-annihilator (the 'rest' of the ${\bf 4}$ multiplet), and the most important gauge mediator in the DM sector is the $Z^\prime$.
description: 33 pages, 7 figures
Popular film and English as a second language : toward a critical feminist pedagogy of identity and desire
Creators: name: Mackie, Ardiss Emilie
Publisher: name: University of British Columbia
Year: 2009

description: My identity as a white woman ESL teacher has been structured partly through movies I saw in my youth. More recently in the late 1990s, a film with ESL, The King and I (1956), was on Japanese television two years in a row while I was teaching there. I found that very interesting and began asking questions regarding the influences that popular film may have on real ESL teachers and students. The study questions how films contribute to ESL in terms of teacher and student identities and desires. To explore this question, I collected three forms of data: 24 films with ESL; post-secondary ESL teacher and student responses to watching two films with ESL; and memories of films from my youth. A framework of critical and feminist pedagogy, including work in identity and ESL, and postcolonial, cultural, and feminist studies informed the analysis. I analyzed the data in relation to discourses of desire and the body as a socially constructed site of racial and gender identification. From the film data, I made the case that particular tropes, initiations, and signs construct reel ESL, such as white female teachers as upholders of particular colonial identities. From the teacher and student data, I found that readers engage with cinematic meanings in a space of liminality, that is, not quite in the movie but not quite in themselves. Readers by-pass their race, gender, age, and occupation to access the cinematic body as politically engaged and disrupting the status quo. From the memory data, I argued that through the seemingly innocent practice of watching movies, a world of racialized and gendered desire was settling in and making itself comfortable. The study is positioned in a critical feminist pedagogy of multiliteracies. Here, diverse sites of meaning-making strengthen and disrupt the desires and identities of ESL.
Two-photon optical shielding of collisions between ultracold polar molecules
Creators: name: Karam, Charbel
name: Borgloh, Mara Meyer zum Alten
name: Vexiau, Romain
name: Lepers, Maxence
name: Ospelkaus, Silke
name: Bouloufa-Maafa, Nadia
name: Karpa, Leon
name: Dulieu, Olivier
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a method to engineer repulsive long-range interactions between ultracold ground-state molecules using optical fields, thus preventing short-range collisional losses. It maps the microwave coupling recently used for collisional shielding onto a two-photon transition, and takes advantage of optical control techniques. In contrast to one-photon optical shielding [Phys. Rev. Lett. 125, 153202 (2020)], this scheme avoids heating of the molecular gas due to photon scattering. The proposed protocol, exemplified for 23Na39K, should be applicable to a large class of polar diatomic molecules.
Quantum stream cipher based on optical communications
Creators: name: Hirota, Osamu
name: Kato, Kentaro
name: Sohma, Masaki
name: Usuda, Tsuyoshi S.
name: Harasawa, Katsuyoshi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In 2000, an attractive new quantum cryptography was discovered by H.P.Yuen based on quantum communication theory. It is applicable to direct encryption, for example quantum stream cipher based on Yuen protocol(Y-00), with high speeds and for long distance by sophisticated optical devices which can work under the average photon number per signal light pulse:$ = 1000 \sim 10000$. In addition, it may provide information-theoretic security against known/chosen plaintext attack, which has no classical analogue. That is, one can provide secure communication, even the system has $H(K) << H(X)$. In this paper, first, we give a brief review on the general logic of Yuen's theory. Then, we show concrete security analysis of quantum stream cipher to quantum individual measurement attacks. Especially by showing the analysis of Lo-Ko known plaintext attack, the feature of Y-00 is clarified. In addition, we give a simple experimental result on the advantage distillation by scheme consisting of intensity modulation/direct detection optical communication.
description: SPIR. Proceeding-5551,2004
Brenda_Tesis_Titulo_2021.pdf
Creators: name: KAREN, MENDOZA SALINAS BRENDA
Publisher: name: figshare
Year: 2021
Subjects: Medicine

description: El espectro clínico de la infección por Dengue y el COVID-19 presenta gran similitud en relación a los eventos fisiopatológicos. Por ello el presente trabajo tiene por finalidad conocer las características clínicas y de laboratorio en pacientes pediátricos con coinfección por dengue y COVID-19, Hospital EsSalud III – Iquitos, 2020. Se realizó un estudio de tipo descriptivo en 57 pacientes atendidos. Concluyendo que los síntomas más frecuentes fueron la fiebre (100 %), cefalea (70,2 %), astenia (68,4 %), náuseas (66,7 %) y vómitos (64,9 %). En menor proporción se observa que los pacientes presentaron escalofríos (52,6 %) y dolor abdominal (42,1 %). La pérdida de olfato y de gusto presentaron menor frecuencia. El 64,9 % presentaron leucocitos < 4000 / mm3, mientras que solo el 1,8 % presentaron leucocitos > 10 000 / mm3. Respecto a los linfocitos se observa que el 64,9 % presentaron linfocitos < 1500 / mm3 y 1,8 % presentaron linfocitos > 4000 / mm3. Respecto a neutrófilos se observa que 64,9 % de pacientes presentaron neutrófilos < 2000 / mm3. El 29,8 % presentaron eosinófilos < 40 / mm3 y el resto valores de 40 a 500 / mm3. En cuanto a monocitos el 21 % presentó un valor < 200 / mm3, el 3,5 % presentaron un valor > 800 / mm3. El 17,5 % de los pacientes presentaron basófilos < 10 / mm3, el 63,2 % 10 a 100 / mm3 y el 19,3 % > 100 / mm3. Respecto al hematocrito, se observa que el 71,9 % de pacientes presentaron hematocrito de 35 a 48 % y el 28,1 % un hematocrito menor a 35 %, el 41 % presentaron hemoglobina <12 g/dL y solo el 10,3 % un valor > 14 g/dL. La mayoría de pacientes presentaron plaquetas < 150000 / mm3. Palabras clave: COVID-19, dengue
Testing definitional equivalence of theories via automorphism groups
Creators: name: Andréka, H.
name: Madarász, J.
name: Németi, I.
name: Székely, G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03C40 (Primary) 03C20, 08A35, 03B10, 03A10, 18Cxx (Secondary)

description: Two first-order logic theories are definitionally equivalent if and only if there is a bijection between their model classes that preserves isomorphisms and ultraproducts (Theorem 2). This is a variant of a prior theorem of van Benthem and Pearce. In Example 2, uncountably many pairs of definitionally inequivalent theories are given such that their model categories are concretely isomorphic via bijections that preserve ultraproducts in the model categories up to isomorphism. Based on these results, we settle several conjectures of Barrett, Glymour and Halvorson.
Women and civil society : the case of Chinese women organizing in the reform era (1978-2003)
Creators: name: Hung, Belinda
Publisher: name: University of British Columbia
Year: 2009

description: In searching for evidence of civil society in contemporary China, scholars have used empirical data or case studies on social organizations during the reform era to assess whether there is indeed the emergence and development of civil society in China. However, there is a lack of literature on the importance of Chinese women organizing and the future of civil society in China despite the recent surge in number and diversity of women organizing and women's organizations in the reform era. This thesis explores the complex issues surrounding the current debate on the future of civil society in China from the perspective of Chinese women organizing in the reform era from 1978-2003. Through in-depth studies on the All-China Women's Federation, the Shaanxi Association for Women and Family, the Maple Women's Psychological Counseling Center, the Rural Women Magazine and the Network Against Domestic Violence, this thesis analyzes the legal, leadership and international influence, three of the major factors that facilitate or inhibit the growth and development of women's organizations in China and recommend strategies and policies that will help strengthen the growth and development of women organizing and women's organizations and therefore the development of civil society in China.
On the Origin of the Eccentricities of Extrasolar Planets
Creators: name: Namouni, Fathi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We develop a phenomenological theory that aims to account for the origin of the large eccentricities of extrasolar planets and that of the small eccentricities in the solar system, the preference for apsidal alignment in non-resonant multiplanet systems, and the origin of the similarities in the eccentricity distribution of extra-solar planets and that of spectroscopic binary stars. We show that if a physical process is weakly dependent on the local dynamics of the companion and imparts a small relative acceleration to the star-companion system, the eccentricity of the companion's orbit is excited to large values depending on the direction and duration of acceleration. A natural candidate for such processes are asymmetric stellar jets and star-disk winds. When the acceleration originates from a precessing jet, large eccentricities can be excited by the resonance of the jet's precession frequency with the induced acceleration's excitation frequency even for nearly perpendicular jets. Precession also reduces the eccentricity amplitude far inside the resonance radius. The acceleration's strength is best constrained in multiplanet systems because of the companions' mutual gravitational perturbations, while the acceleration's duration is bounded by the condition that the residual velocity imparted to the star is smaller than the stellar velocity dispersion in the Galaxy. In the outer parts of the star-companion system where the acceleration excitation time is comparable to or smaller than the orbital period, significant radial migration takes place which may have important consequences for the dynamics of the minor body populations in the solar system. The theory is illustrated with the $\upsilon$ Andromedae binary system.
description: 41 pages, 14 figures, accepted for publication in the Astronomical Journal
Two-Dimensional N=(2,2) Dilaton Supergravity from Graded Poisson-Sigma Models II: Analytic Solution and BPS States
Creators: name: Bergamin, L.
name: Kummer, W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The integrability of N=(2,2) dilaton supergravity in two dimensions is studied by the use of the graded Poisson Sigma model approach. Though important differences compared to the purely bosonic models are found, the general analytic solutions are obtained. The latter include minimally gauged models as well as an ungauged version. BPS solutions are an especially interesting subclass.
description: 23 p LaTeX
Schwinger effect in compact space: a real time calculation
Creators: name: Qiu, Yue
name: Sorbo, Lorenzo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the discharging rate of a uniform electric field due to Schwinger pair production in $(1+1)$-dimensional scalar electrodynamics with a compact dimension of radius $R$. Our calculation is performed in real time, using the in-in formalism. For large compactification radii, $R\to\infty$, we recover the standard non compact space result. However, other ranges of values of $R$ and of the mass $m$ of the charged scalar give rise to a richer set of behaviors. For $R\gtrsim{\cal O}(1/m)$ with $m$ large enough, the electric field oscillates in time, whereas for $R\to 0$ it decreases in steps. We discuss the origin of these results.
description: 13 pages, 5 figures
title: Perfil epidemiológico de las pacientes en las que se activó el Código Oro durante el período diciembre 2022-marzo 2023, para atención obstétrica de emergencia en un hospital público en el Noreste de México
Creators: name: Cervantes Aguilera, Luis Antonio
Publisher: name: Tecnológico de Monterrey
publisherIdentifier: https://ror.org/03ayjn504
publisherIdentifierScheme: ROR
Year: 2023
Subjects: classificationCode: 3
subject: FOS: Medical and health sciences

description: Antecedentes: La mortalidad materna es una realidad y un problema de salud pública que afecta nuestro contexto y que está presente dentro de la cotidianeidad de los procesos de atención del entorno en el que nos encontramos. Posterior a la actualización del proceso de Código ORO para la atención de la emergencia obstétrica; se identificó la necesidad de contar con información específica de las pacientes que ameritan la intervención de este código emergencia. Objetivo: Conocer el perfil epidemiológico de las pacientes que han requerido la activación del Código ORO para la atención de la emergencia obstétrica en el Hospital Metropolitano. Materiales y métodos: El presente estudio es de tipo retrospectivo, observacional y analítico. El cual fue realizado en un hospital catalogado como de segundo nivel de atención perteneciente a los Servicios de Salud del estado de Nuevo León. Se trató de un estudio sin riesgo, en el cual se analizaron los expedientes de 130 pacientes en las cuales se activó el Código ORO, dentro del período diciembre 2022-marzo 2023. Resultados: Se caracterizó el perfil epidemiológico de las pacientes mediante frecuencias, además, se identificaron 5 variables como estadísticamente significativas para la confirmación de la emergencia obstétrica, edad (p = 0.02), índice de masa corporal (p = 0.007), paridad (p = 0.03), número de consultas prenatales (p = 0.035) y número de ultrasonidos realizados durante la gestación (p = 0.002). En el análisis de regresión logística se identificaron como predictores de la emergencia al IMC y el número de ultrasonidos realizados, con un AOR de 1.10 IC95 [1.0007, 1.25] y de 1.5 IC95 [1.12, 2.14] respectivamente. Conclusiones: El perfil caracterizado permite identificar factores sociodemográficos importantes sobre el contexto de las pacientes; las variables identificadas como relevantes tanto para la predicción de la emergencia obstétrica como para su confirmación podrán serutilizadas como puntos críticos durante la evaluación y atención de pacientes obstétricas en el hospital.
Physics of nanocoulomb-class electron beams in laser-plasma wakefields
Creators: name: Götzfried, J.
name: Döpp, A.
name: Gilljohann, M.
name: Foerster, M.
name: Ding, H.
name: Schindler, S.
name: Schilling, G.
name: Buck, A.
name: Veisz, L.
name: Karsch, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Laser wakefield acceleration (LWFA) and its particle-driven counterpart, plasma wakefield acceleration (PWFA), are commonly treated as separate, though related branches of high-gradient plasma-based acceleration. However, novel proposed schemes are increasingly residing at the interface of both concepts where the understanding of their interplay becomes crucial. Here, we report on experiments covering a wide range of parameters by using nanocoulomb-class quasi-monoenergetic electron beams from LWFA with a 100-TW-class laser. Based on a controlled electron injection, these beams reach record-level performance in terms of laser-to-beam energy transfer efficiency (up to 10%), spectral charge density (regularly exceeding 10 pC/MeV) and divergence (1 mrad full width at half maximum divergence). The impact of charge fluctuations on the energy spectra of electron bunches is assessed for different laser parameters, including a few-cycle laser, followed by a presentation of results on beam loading in LWFA with two electron bunches. This scenario is particularly promising to provide high-quality electron beams by using one of the bunches to either tailor the laser wakefield via beam loading or to drive its own, beam-dominated wakefield. We present experimental evidence for the latter, showing a varying acceleration of a low-energy witness beam with respect to the charge of a high-energy drive beam in a spatially separate gas target. With the increasing availability of petawatt-class lasers the access to this new regime of laser-plasma wakefield acceleration will be further facilitated, thus providing new paths towards low-emittance beam generation for future plasma-based colliders or light sources.
Supplemental Material: Performance of the Aldosterone-to-Renin Ratio as a Screening Test for Primary Aldosteronism: A Systematic Review and Meta-Analysis
Creators: name: Hundemer, Gregory
Publisher: name: figshare
Year: 2021
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: Data Supplement
A Quick Guide to OpenShot Free Editing Software
Creators: name: Clout, Victoria
Publisher: name: figshare
Year: 2020
Subjects: subject: 100509 Video Communications
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A Quick Guide to OpenShot Free Editing Software. OpenShot is a free software for editing. This guide takes you through the OpenShot tool and how to use it.
An ODE approach to multiple choice polynomial programming
Creators: name: Shao, Sihong
name: Wu, Yishan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 90C59, 35Q90, 90C09, 90C23

description: We propose an ODE approach to solving multiple choice polynomial programming (MCPP) after assuming that the optimum point can be approximated by the expected value of so-called thermal equilibrium as usually did in simulated annealing. The explicit form of the feasible region and the affine property of the objective function are both fully exploited in transforming the MCPP problem into the ODE system. We also show theoretically that a local optimum of the former can be obtained from an equilibrium point of the latter. Numerical experiments on two typical combinatorial problems, MAX-$k$-CUT and the calculation of star discrepancy, demonstrate the validity of our ODE approach, and the resulting approximate solutions are of comparable quality to those obtained by the state-of-the-art heuristic algorithms but with much less cost. This paper also serves as the first attempt to use a continuous algorithm for approximating the star discrepancy.
description: Accepted by the East Asian Journal on Applied Mathematics on October 16, 2023
A Quick Guide to the OBS Studio
Creators: name: Clout, Victoria
Publisher: name: figshare
Year: 2020
Subjects: subject: 100509 Video Communications
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A Quick Guide to the OBS Studio. This guide explains how to record a video using the free software tool called OBS Studio. this tool can also be used to stream videos live on platforms including Youtube and Twitch.
Pauli equation and charged spin-1/2 particle in a weak gravitational field
Creators: name: Oliveira, Samuel W. P.
name: Oyadomari, Guilherme Y.
name: Shapiro, Ilya L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the nonrelativistic approximation in the curved-space Dirac equation, the analog of the Pauli equation is derived for a weak gravitational field with a gauge fixing condition related to the synchronous gauge, in the presence of an electromagnetic field. Different from the previous works which were employing either the exact or conventional Foldy-Wouthuysen transformations, here we perform calculations by directly performing nonrelativistic approximation which reduced in the power series expansion in the inverse mass of the spinning particle. On top of that, the equations of motion for the massive spin-$1/2$ charged particle are obtained. The two particular cases of the previously explored backgrounds, namely a) plane gravitational wave and b) homogeneous static gravitational field are considered for control. In the case a) we meet correspondence with the previous results. On the other hand, in case b), there is no correspondence with neither perturbative nor with exact Foldy-Wouthuysen transformations, which we also recalculate and agree with the previous works. The disagreement is a kind of a theoretical challenge and most likely occurs because the potential energy, in the particular case of Newtonian approximation, is proportional to the mass of the particle.
description: 24 pages, no figures
A Complete Annotated Bibliography of Work Related to Sidon Sequences
Creators: name: O'Bryant, Kevin
Publisher: name: arXiv
Year: 2004
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11B50; 11B83; 05B10

description: A Sidon sequence is a sequence of integers a_1 < a_2 < a_3 < ... with the property that the sums a_i+a_j (i\le j) are distinct. This work contains a survey of Sidon sequences and their generalizations, and an extensive annotated and hyperlinked bibliography of related work.
description: 38 pages, pdf version heavily hyperlinked, postscript version is inexpiably hyperlinkless
A question of Bukh on sums of dilates
Creators: name: Hanson, Brandon
name: Petridis, Giorgis
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B30

description: We answer in the affirmative a question of Bukh on the cardinality of the dilate sum $A + 2 \cdot A$.
description: 21 pages
Exposición de resultados de aprendizaje: metodologías y estrategia para promocionar el perfil profesionaly la continuidad en la carrera
Creators: name: Vasco-Morales, Santiago
name: Toapanta-Pinta, Paola
name: Rosero-Quintana, Mercy Dolores
name: Céspedes-Granda, Sara Rosa
Publisher: name: figshare
Year: 2021
Subjects: subject: 130313 Teacher Education and Professional Development of Educators
subject: FOS: Educational sciences
subject: Education

description: La exposición de resultados de aprendizaje a los alumnos que inician su formación a través de distintas metodologías podría mejorar la tasa de retención de los estudiantes. Muchos estudiantes ingresan a una carrera que no es su primera elección y esto interfiere con la motivación para continuar su formación académica. Se deben generar estrategias que mejor en la afinidad de los estudiantes hacia las competencias de la profesión, por tanto se organizó la semana de presentación de resultados de aprendizaje de fin del semestre; y, con el objetivo de conocer la percepción de los estudiantes sobre las metodologías y contenidos utilizados durante la semana y su eficacia para demostrar el rol del profesional de obstetricia y motivar la continuidad de estudiantes de primer semestre en la carrera, se realizó un estudio transversal descriptivo y analítico a través de una encuesta en escala Likert, aplicada a los estudiantes que asistieron a las actividades realizadas durante la semana y el uso de modelos Bayesianos ordinales.
EMBRIOLOGIA GASTROINTESTINAL Y CAVIDADES CORPORALES
Creators: name: TOAPANTA-PINTA, PAOLA
Publisher: name: Zenodo
Year: 2024
Subjects: embriología
gastrointestinal
cavidades corporales

description: CUADERNO DE REVISION. EMBRIOLOGIA GASTROINTESTINAL Y CAVIDADES CORPORALES. Cátedra de Embriologia. Carrera de Obstetricia
Quantum magnetism in two dimensions: From semi-classical Néel order to magnetic disorder
Creators: name: Richter, J.
name: Schulenburg, J.
name: Honecker, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This is a review of ground-state features of the s=1/2 Heisenberg antiferromagnet on two-dimensional lattices. A central issue is the interplay of lattice topology (e.g. coordination number, non-equivalent nearest-neighbor bonds, geometric frustration) and quantum fluctuations and their impact on possible long-range order. This article presents a unified summary of all 11 two-dimensional uniform Archimedean lattices which include e.g. the square, triangular and kagome lattice. We find that the ground state of the spin-1/2 Heisenberg antiferromagnet is likely to be semi-classically ordered in most cases. However, the interplay of geometric frustration and quantum fluctuations gives rise to a quantum paramagnetic ground state without semi-classical long-range order on two lattices which are precisely those among the 11 uniform Archimedean lattices with a highly degenerate ground state in the classical limit. The first one is the famous kagome lattice where many low-lying singlet excitations are known to arise in the spin gap. The second lattice is called star lattice and has a clear gap to all excitations. Modification of certain bonds leads to quantum phase transitions which are also discussed briefly. Furthermore, we discuss the magnetization process of the Heisenberg antiferromagnet on the 11 Archimedean lattices, focusing on anomalies like plateaus and a magnetization jump just below the saturation field. As an illustration we discuss the two-dimensional Shastry-Sutherland model which is used to describe SrCu2(BO3)2.
description: This is now the complete 72-page preprint version of the 2004 review article. This version corrects two further typographic errors (three total with respect to the published version), see page 2 for details
EFETIVIDADE DOS SISTEMAS DE INFORMAÇÃO DAS AGROINDÚSTRIAS TORREFADORAS E BENEFICIADORAS DE CAFÉ LOCALIZADAS EM PORTO VELHO – RO
Creators: name: Ferreira, Degson
name: Souza, Mariluce Paes De
name: Passos, Rosalia Maria
name: Oliveira, Marcelo Batista
name: Souza Filho, Theophilo Alves
name: Ferreira, Degson
name: Souza, Mariluce Paes De
name: Passos, Rosalia Maria
name: Oliveira, Marcelo Batista
name: Souza Filho, Theophilo Alves
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Sistemas de Informação
subject: Efetividade de Sistemas de Informação
subject: Agroindústrias de Café
subject: Information Systems
subject: FOS: Computer and information sciences
subject: Information Systems Effectiveness
subject: Coffee Agriindustries

description: A presente pesquisa teve como objetivo avaliar a efetividade dos sistemas de informação disponíveis nas agroindústrias torrefadoras e beneficiadoras de café em Porto Velho – RO. Para tanto, sistematizou-se um referencial teórico acerca dos avanços tecnológicos da sociedade da informação, particularizando alguns conceitos de sistemas de informação e reflexões teóricas sobre a avaliação dos mesmos. É um estudo descritivo, utilizando-se de técnicas de entrevistas e aplicação de formulários com perguntas semi-estruturadas e a observação sistemática in loco. A análise dos dados observados revelou que os sistemas de informação existentes estão facilitando e contribuindo na realização dos trabalhos pelos usuários, fornecendo as informações que precisam, bem como atendendo as atuais necessidades de informação dos gerentes ou tomadores de decisão das agroindústrias de café pesquisadas.--------------------------------------------------This study aimed to evaluate the information systems effectiveness available in coffee agricultural industries torrefadoras and beneficiadoras in Porto Velho - RO. Thus, it was codified a theoretical referential about the technological advances of the information society, specifying some concepts of information systems and theoretical reflections on the evaluation of them. It is a descriptive study, using of interviews techniques and forms application with semi-structured questions and systematic observation spot. The analysis of observed data revealed that existing information systems are facilitating and contributing on the work realization for users, providing the information needed, as well as supplying the current needs of managers information or decision-makers of coffee agriindustries surveyed.
Conservas de rabanete: bom para a saúde e para geração de renda
Creators: name: Popoff, Sandra
Publisher: name: Zenodo
Year: 2024
Subjects: agricultura sustentável
jornalismo rural

description: O rabanete, uma hortaliça tradicionalmente associada a saladas e pratos leves, está ganhando espaço em um cenário mais robusto, tanto na mesa quanto no mercado de alimentos funcionais. Com uma rica composição de nutrientes, o rabanete oferece benefícios significativos para a saúde, incluindo propriedades antioxidantes e auxiliares no controle de peso.

Mas, além de seu valor nutricional, essa raiz pode ser transformada em um produto de alta demanda: as conservas artesanais de rabanete. Com o aumento do interesse por alimentos saudáveis e preservados de forma natural, a conserva de rabanete se destaca como uma opção versátil e saborosa, que agrada paladares exigentes e consumidores preocupados com o bem-estar.

No entanto, o potencial do rabanete vai além da nutrição. Para o pequeno empreendedor rural, essa hortaliça pode se tornar a base de um negócio lucrativo, capaz de gerar renda sustentável e agregar valor ao que antes era apenas um produto in natura. As conservas de rabanete, quando bem feitas e posicionadas no mercado, têm o potencial de conquistar nichos específicos e crescer em popularidade, aproveitando a tendência crescente por alimentos artesanais e locais.

Neste artigo, vamos explorar, com embasamento técnico e dicas práticas, como o rabanete pode ser seu próximo aliado tanto na promoção da saúde quanto na geração de renda. Vamos discutir seus benefícios nutricionais, o processo de produção de conservas e, por fim, como transformar essa prática em um negócio lucrativo. Se você deseja melhorar sua saúde e seu bolso ao mesmo tempo, continue lendo e descubra como o rabanete pode ser a chave inovadora para seu sucesso!
Automotive Collision Risk Estimation Under Cooperative Sensing
Creators: name: LaChapelle, Daniel
name: Humphreys, Todd
name: Narula, Lakshay
name: Iannucci, Peter
name: Moradi-Pari, Ehsan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper offers a technique for estimating collision risk for automated ground vehicles engaged in cooperative sensing. The technique allows quantification of (i) risk reduced due to cooperation, and (ii) the increased accuracy of risk assessment due to cooperation. If either is significant, cooperation can be viewed as a desirable practice for meeting the stringent risk budget of increasingly automated vehicles; if not, then cooperation - with its various drawbacks - need not be pursued. Collision risk is evaluated over an ego vehicle's trajectory based on a dynamic probabilistic occupancy map and a loss function that maps collision-relevant state information to a cost metric. The risk evaluation framework is demonstrated using real data captured from two cooperating vehicles traversing an urban intersection.
description: 5 pages, 5 figures, presented at ICASSP 2020 conference
Message-Passing Neural Quantum States for the Homogeneous Electron Gas
Creators: name: Pescia, Gabriel
name: Nys, Jannes
name: Kim, Jane
name: Lovato, Alessandro
name: Carleo, Giuseppe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We introduce a message-passing-neural-network-based wave function Ansatz to simulate extended, strongly interacting fermions in continuous space. Symmetry constraints, such as continuous translation symmetries, can be readily embedded in the model. We demonstrate its accuracy by simulating the ground state of the homogeneous electron gas in three spatial dimensions at different densities and system sizes. With orders of magnitude fewer parameters than state-of-the-art neural-network wave functions, we demonstrate better or comparable ground-state energies. Reducing the parameter complexity allows scaling to $N=128$ electrons, previously inaccessible to neural-network wave functions in continuous space, enabling future work on finite-size extrapolations to the thermodynamic limit. We also show the Ansatz's capability of quantitatively representing different phases of matter.
description: 13 pages, 5 figures