cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Environment for Agricultural and Agribusiness Investment in India
Creators: name: Landes, Maurice R.
name: Landes, Maurice R.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Environmental Economics and Policy
subject: International Relations/Trade
subject: India
subject: agriculture
subject: agribusiness
subject: investment
subject: trade policy
subject: domestic policy
subject: infrastructure

description: Despite strong overall economic growth and strengthening food demand, investment in Indian agriculture and agribusiness has remained sluggish, and growth in farm output has slowed, since the early 1990s. An array of policies and regulations affecting agricultural production, marketing, and food processing—along with weak infrastructure and a lack of market services—have discouraged private investment by farmers and large, vertically integrated agribusinesses. The policy environment has grown more investor friendly since the late 1990s and private investment appears to be responding, but significant barriers remain and the pace of future reforms remains uncertain.
The U.S. Organic Handling Sector in 2004: Baseline Findings of the Nationwide Survey of Organic Manufacturers, Processors, and Distributors
Creators: name: Dimitri, Carolyn
name: Oberholtzer, Lydia
name: Dimitri, Carolyn
name: Oberholtzer, Lydia
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Organic agriculture
subject: handlers
subject: intermediaries
subject: marketing organic products
subject: procurement of organic products
subject: agricultural contracts
subject: distribution of organic products
subject: National Organic Program
subject: organic label
subject: food labels

description: The organic sector has expanded rapidly over the last decade, as retail sales of organic food increased to $15.7 billion in 2006. As sales have grown, so have the number and types of outlets selling organic products. USDA’s Economic Research Service surveyed certified organic intermediaries in the United States to collect information on basic characteristics of the sector in 2004, as well as its marketing and procurement practices. This report uses the survey findings to present a baseline view of the organic handling sector. A large share of organic handlers are mixed operations that handle both organic and conventional products, and most began as conventional firms that converted to handling organic products. Most organic products are sold domestically, with nearly three-quarters sold nationally or regionally. More than three-quarters of the firms are independent, and most are small. Handlers seek suppliers with a reputation for providing high-quality products. Most transactions between handlers and suppliers occur under contract, reportedly so that handlers can procure ingredients essential for their businesses.
Temperature dependence of $η/s$ of strongly interacting matter: effects of the equation of state and the parametric form of $(η/s)(T)$
Creators: name: Auvinen, Jussi
name: Eskola, Kari J.
name: Huovinen, Pasi
name: Niemi, Harri
name: Paatelainen, Risto
name: Petreczky, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the temperature dependence of the shear viscosity to entropy density ratio $η/s$ using a piecewise linear parametrization. To determine the optimal values of the parameters and the associated uncertainties, we perform a global Bayesian model-to-data comparison on Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV and Pb+Pb collisions at $2.76$ TeV and $5.02$ TeV, using a 2+1D hydrodynamical model with the EKRT initial state. We provide three new parametrizations of the equation of state (EoS) based on contemporary lattice results and hadron resonance gas, and use them and the widely used $s95p$ parametrization to explore the uncertainty in the analysis due to the choice of the equation of state. We found that $η/s$ is most constrained in the temperature range $T\approx 150$--$220$ MeV, where, for all EoSs, $0.08 < η/s < 0.23$ when taking into account the 90% credible intervals. In this temperature range the EoS parametrization has only a small $\approx 10\%$ effect on the favored $η/s$ value, which is less than the $\approx 30\%$ uncertainty of the analysis using a single EoS parametrization. Our parametrization of $(η/s)(T)$ leads to a slightly larger minimum value of $η/s$ than the previously used parametrizations. When we constrain our parametrization to mimic the previously used parametrizations, our favored value is reduced, and the difference becomes statistically insignificant.
description: 19 pages, 12 figures. Published in Phys. Rev. C
Agricultural Contracting Update, 2005
Creators: name: MacDonald, James M.
name: Korb, Penelope J.
name: MacDonald, James M.
name: Korb, Penelope J.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Risk and Uncertainty
subject: Production contracts
subject: marketing contracts
subject: farm structure
subject: farm size
subject: contracting
subject: Agricultural Resource Management Survey
subject: ARMS
subject: risk analysis

description: More than half of all transactions for U.S. agricultural products are still conducted through spot market exchanges, in which commodities are bought and sold in open market transactions for immediate delivery. But a growing share of U.S. farm production is produced and sold under agricultural contracts. Such contracts between farmers and their buyers are reached prior to harvest (or before the completion stage for livestock) and govern the terms under which products are transferred from the farm. The shift of production to contracting coincides with shifts of production to larger farms. Contracts are far more likely to be used on large farms than on small ones. Marketing and production contracts covered 41 percent of the value of U.S. agricultural production in 2005, up from 39 percent in 2003, 36 percent in 2001, and a substantial increase over 28 percent in 1991 and 11 percent in 1969.
Point defect concentrations in metastable Fe-C alloys
Creators: name: Foerst, Clemens J.
name: Slycke, Jan
name: Van Vliet, Krystyn J.
name: Yip, Sidney
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Point defect species and concentrations in metastable Fe-C alloys are determined using density functional theory and a constrained free-energy functional. Carbon interstitials dominate unless iron vacancies are in significant excess, whereas excess carbon causes greatly enhances vacancy concentration. Our predictions are amenable to experimental verification; they provide a baseline for rationalizing complex microstructures known in hardened and tempered steels, and by extension other technological materials created by or subjected to extreme environments.
Gustav Born - Bibliography from GUSTAV VICTOR RUDOLPH BORN. 29 July 1921 — 16 April 2018
Creators: name: Flower, Rod
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Physiology
subject: FOS: Biological sciences

description: Gustav Born (Gus) made fundamental contributions to the study of blood platelets and their role in thrombogenesis. Working first on the biochemistry of these cells and their granules, Gus later devised an extremely effective method to measure their dynamic responses when stimulated to aggregate by pro-thrombotic stimuli. ‘The Born Aggregometer’, as it is known, revolutionized the study of platelets and the diagnosis of platelet-related disorders. Gus was elected a Fellow of the Royal Society in 1972 for his work and subsequently awarded the Royal Medal. He received numerous other accolades and awards for his contributions to cardiovascular medicine.
Additional file 1 of PRKCQ inhibition enhances chemosensitivity of triple-negative breast cancer by regulating Bim
Creators: name: Byerly, Jessica H.
name: Port, Elisa R.
name: Irie, Hanna Y.
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: Additional file 1 : Supplemental Figure 1. PRKCQ kinase inhibitor (17k) treatment does not affect other PKC isoforms. MDA-MB231Luc cells were treated with indicated concentrations of 17k for 24 hours. Expression of PKC isoforms was assessed. Supplemental Figure 2. PRKCQ inhibition suppresses expression of mesenchymal proteins. MDA-MB231Luc cells were treated for 24 hours with indicated concentrations of 17k. Expression of Vimentin and β5 integrin was assessed. Supplemental Figure 3. PRKCQ inhibitor (17k) treatment does not inhibit growth of TNBC cells that do not express PRKCQ. MDA-MB157 cells that do not express PRKCQ were cultured in 3D Matrigel cultures and treated for the indicated number of days with 17k (1uM). MDA-MB231Luc cells were plated at the same time in parallel cultures and treated with 17k (1uM) for the same number of days and serves as a positive control for the efficacy of 17k.
Mechanism of hopping transport in disordered Mott insulators
Creators: name: Nakatsuji, S.
name: Dobrosavljevic, V.
name: Tanaskovic, D.
name: Minakata, M.
name: Fukazawa, H.
name: Maeno, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By using a combination of detailed experimental studies and simple theoretical arguments, we identify a novel mechanism characterizing the hopping transport in the Mott insulating phase of Ca$_{2-x}$Sr$_x$RuO$_4$ near the metal-insulator transition. The hopping exponent $α$ shows a systematic evolution from a value of $α=1/2$ deeper in the insulator to the conventional Mott value $α=1/3$ closer to the transition. This behavior, which we argue to be a universal feature of disordered Mott systems close to the metal-insulator transition, is shown to reflect the gradual emergence of disorder-induced localized electronic states populating the Mott-Hubbard gap.
description: 5 pages, 3 figures, To be published in Physical Review Letters
MERCADOS Y COMERCIALIZACIÓN DE INSUMOS EN LA CADENA DE LECHE DE VACA EN EL ESTADO DE HIDALGO
Creators: name: Reyes, Venancio Cuevas
name: Espinosa Garcia, Jose Antonio
name: Romero Santillan, Fernando
name: Jolalpa Barrera, Jose Luis
name: Reyes, Venancio Cuevas
name: Espinosa Garcia, Jose Antonio
name: Romero Santillan, Fernando
name: Jolalpa Barrera, Jose Luis
Publisher: name: Unknown
Year: 2008
Subjects: subject: Livestock Production/Industries
subject: Agri Food Chain
subject: markets
subject: commercialization
subject: inputs
subject: dairymilk
subject: Cadena agroalimentaria
subject: mercados
subject: comercialización
subject: insumos
subject: leche de vaca.

description: The objective of the present work was the one to characterize the market of farming insumos of the milk chain of cow in the state of Hidalgo with the purpose of identifying critical necks of bottle or factors that affect their development of the productive chain. The analysis of productive chains and sampling of proportions of Maxima variance was used. To the channels and agents of commercialization were described, as well as the markets of the inputs, identifying themselves that the supplying participate national and transnational companies actively. The balanced foods that are sold are of national origin, the forages are of crazy origin and the veterinary products and reproductive nationals and of companies and laboratories of the foreigner. One concludes that the necks critical factors are related to the nutritional sources (forage and grains), as well as the technical attendance, in addition to the structures of markets some inputs, for example monopolistic competition and oligopoly.
Photo style transfer with consistency losses
Creators: name: Yao, Xu
name: Puy, Gilles
name: Pérez, Patrick
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We address the problem of style transfer between two photos and propose a new way to preserve photorealism. Using the single pair of photos available as input, we train a pair of deep convolution networks (convnets), each of which transfers the style of one photo to the other. To enforce photorealism, we introduce a content preserving mechanism by combining a cycle-consistency loss with a self-consistency loss. Experimental results show that this method does not suffer from typical artifacts observed in methods working in the same settings. We then further analyze some properties of these trained convnets. First, we notice that they can be used to stylize other unseen images with same known style. Second, we show that retraining only a small subset of the network parameters can be sufficient to adapt these convnets to new styles.
ALTERNATIVA PARA LA COMERCIALIZACIÓN DEL CHICOZAPOTE (achras sapota): TECNOLOGÍA DE LOS TRATAMIENTOS MÍNIMOS
Creators: name: Vargas Y Vargas, Maria De Lourdes
name: Gonzalez Novelo, Sara
name: Sanchez, Jose B. Escamilla
name: Tamayo Cortez, Jorge
name: Vargas Y Vargas, Maria De Lourdes
name: Gonzalez Novelo, Sara
name: Sanchez, Jose B. Escamilla
name: Tamayo Cortez, Jorge
Publisher: name: Unknown
Year: 2008
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: chicozapote
subject: life utility
subject: minimumly process
subject: low temperatures
subject: vida útil
subject: mínimamente procesados
subject: bajas temperaturas

description: Chicozapote ( ) is one of the fruit species that at the moment a great potential has, as much commercial as economic, nevertheless, it is a fruit that quickly deteriorates after the harvest taking place diverse biochemical reactions that take to the nondesirable softening, darkening and other aspects, with the consequent loss of the quality of the fruit, thus diminishing its acceptability, and reducing its life utility. A solution to these problems represents the technology of minimum treatments. The objective of this work was to evaluate the effect of diverse conservatives and the temperature on the life utility of fractions of chicozapote. For the accomplishment of this work fruits of chicozapote with a degree of acceptable maturity were used (good color, firmness, size, etc.). 50 fractions of gr. of chicozapote were put under the following treatments: 1) solution of CaCl2 to 1%; 2) a solution of CaCl2 to 2%; 3) ascórbico acid solution and acid citrus, both to 1%; and 4) with solution of ascórbico acid 1,0% and citric acid to 0,5%. All with chlorine (200 ppm). They were dried and they stored to 4, 8 and 22 °C., as variable of answer were evaluated: pH, % acidity, water activity, firmness, ºBrix, reducing sugars, acetaldehído, ethanol, microbiological and sensorial analysis. The best treatment was the 1% mixture ascórbico acid and 0,5% of citric acid with storage to 4°C; prolonging the life of useful of the product until by 36 days, conserving pleasant flavor and color within the accepted characteristics of quality, being the technology of minimum treatments a strategy for the conservation and commercialization of chicozapote.
The production of consonant harmony in child speech
Creators: name: Gormley, Andrea Lucienne
Publisher: name: University of British Columbia
Year: 2009

description: Consonant harmony, an assimilatory process affecting non-adjacent consonants, is found in both child and adult speech. While adult consonant harmony appears to be a phonological process, child consonant harmony has distinct properties that make a purely phonological explanation difficult. Child consonant harmony is found in the speech of some learners acquiring a language that does not have consonant harmony. Data from child consonant harmony is also distinct. In adult systems, sibilant harmony dominates (Hansson 2001), while in child systems velar and labial harmonies are most common (Stoel-Gammon and Stemberger 1994). Recent work on other systematic errors in child speech has arguably revealed a non-phonological source for neutralizations and substitutions (Gibbon 1990, Scobbie et al. 2000). These two cases were previously explained via the phonology, however, acoustic and articulatory analysis show that the expected contrast was being produced by the speaker but was too weak to be perceived. These studies raise the question of other systematic errors in child speech, such as consonant harmony. Could consonant harmony in children be the result of a developing motor system and not the phonology? Previous work on child consonant harmony credits this process solely to the phonology e.g. Stoel-Gammon and Stemberger, 1994; Goad, 1995; Pater & Werle, 2001. A recent treatment by Hansson (2001), however, notes the similarities between consonant harmony and slips of the tongue. He concludes that while adult consonant harmony may be fully synchronic, it may have its source in the domain of speech planning. These similarities also call into question whether child consonant harmony is the result of this domain. Having identified three possible sources for child consonant harmony; the phonology, a developing motor system and the domain of speech planning, a study will be presented that tests the hypothesis that child consonant harmony is the result of a developing motor system. The results of both the articulatory and acoustic study indicate that the motor system is faithfully executing the command to produce a harmonized form. This is evidence that consonant harmony is not the result of a developing motor system. While no evidence is produced that contradicts a phonological treatment, the facts of child consonant harmony may be better explained as having a source in the domain of speech planning.
METODOLOGÍA PARA CONFORMAR UNA EMPRESA COMERCIALIZADORA DE PRODUCTOS AGROPECUARIOS COMO ESTRATEGIA PARA EL DESARROLLO DE ZONAS AGRÍCOLAS
Creators: name: Romero Arenas, Omar
name: Huerta-Lara, Manuel
name: Lopez, Delfino Reyes
name: Romero Arenas, Omar
name: Huerta-Lara, Manuel
name: Lopez, Delfino Reyes
Publisher: name: Unknown
Year: 2008
Subjects: subject: International Development
subject: Marketing
subject: FOS: Economics and business
subject: Strategic plan
subject: mark of reference
subject: unit of agricultural production
subject: model systematic
subject: agricultural areas
subject: Plan estratégico
subject: marco de referencia
subject: unidad de producción agropecuaria
subject: modelo sistemático
subject: zonas agrícolas

description: This work has as fundamental purpose to establish to a general frame of reference that allow to the small producers to give it a better use to the agricultural products of which it prepares in its production units. Having as objective the following one: To design to plan strategic general to conform a productive company, as well as to provide to reference frame that allows the commercialization of products of a Unit of Agricultural Production. The proposed methodology constitutes a systematic model, which indicates logically and drew each of the actions and steps that must be made to achieve an end, which is the essential and basic detonator, in this case for the conformation of a marketing company of agricultural products to support the development of agricultural areas.
Headline-Guided Extractive Summarization for Thai News Articles
Creators: name: Kositcharoensuk, Pimpitchaya
name: Sritrakool, Nakarin
name: Pratanwanich, Ploy N.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Text summarization is a process of condensing lengthy texts while preserving their essential information. Previous studies have predominantly focused on high-resource languages, while low-resource languages like Thai have received less attention. Furthermore, earlier extractive summarization models for Thai texts have primarily relied on the article's body, without considering the headline. This omission can result in the exclusion of key sentences from the summary. To address these limitations, we propose CHIMA, an extractive summarization model that incorporates the contextual information of the headline for Thai news articles. Our model utilizes a pre-trained language model to capture complex language semantics and assigns a probability to each sentence to be included in the summary. By leveraging the headline to guide sentence selection, CHIMA enhances the model's ability to recover important sentences and discount irrelevant ones. Additionally, we introduce two strategies for aggregating headline-body similarities, simple average and harmonic mean, providing flexibility in sentence selection to accommodate varying writing styles. Experiments on publicly available Thai news datasets demonstrate that CHIMA outperforms baseline models across ROUGE, BLEU, and F1 scores. These results highlight the effectiveness of incorporating the headline-body similarities as model guidance. The results also indicate an enhancement in the model's ability to recall critical sentences, even those scattered throughout the middle or end of the article. With this potential, headline-guided extractive summarization offers a promising approach to improve the quality and relevance of summaries for Thai news articles.
description: Accepted for publication in IEEE Access
Time-resolved force microscopy using delay-time modulation method
Creators: name: Mogi, Hiroyuki
name: Wakabayashi, Rin
name: Yoshida, Shoji
name: Arashida, Yusuke
name: Taninaka, Atsushi
name: Iwaya, Katsuya
name: Miura, Takeshi
name: Takeuchi, Osamu
name: Shigekawa, Hidemi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We developed a time-resolved force microscopy technique by integrating atomic force microscopy using a tuning-fork-type cantilever with the delay time modulation method for optical pump-probe light. We successfully measured the dynamics of surface recombination and diffusion of photoexcited carriers in bulk WSe2, which is challenging owing to the effect of tunneling current in time-resolved scanning tunneling microscopy. The obtained results were comprehensively explained with the model based on the dipole-dipole interaction induced by photo illumination.
description: 13 pages, 4 figures
Low-energy neutron-12C analyzing powers: Results from a multichannel algebraic scattering theory
Creators: name: Svenne, J. P.
name: Amos, K.
name: Karataglidis, S.
name: van der Knijff, D.
name: Canton, L.
name: Pisent, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Analyzing powers in low-energy neutron scattering from 12C are calculated in an algebraic momentum-space coupled-channel formalism (MCAS). The results are compared with recently obtained experimental data. The channel-coupling potentials have been defined previously to reproduce the total cross section and sub-threshold bound states of the compound system. Without further adjustment, good agreement with data for the analyzing powers is obtained.
description: 9 pages, including 5 figures
Additional file 2 of Defining and assessing context in healthcare implementation studies: a systematic review
Creators: name: L. Rogers
name: A. De Brún
name: E. McAuliffe
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 2. Data extraction template.
Visions Of Destruction: Exploring Human Impact on Nature by Navigating the Latent Space of a Diffusion Model via Gaze
Creators: name: Sola, Mar Canet
name: Guljajeva, Varvara
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: I.2; J.5

description: This paper discusses the artwork "Visions of Destruction", with a primary conceptual focus on the Anthropocene, which is communicated through audience interaction and generative AI as artistic research methods. Gaze-based interaction transitions the audience from mere observers to agents of landscape transformation, fostering a profound, on-the-edge engagement with pressing issues such as climate change and planetary destruction. The paper looks into early references of interactive art history that deploy eye-tracking as a method for audience interaction, and presents recent AI-aided artworks that demonstrate interactive latent space navigation.
Compact integrated optical sensors and electromagnetic actuators for vibration isolation systems in the gravitational-wave detector KAGRA
Creators: name: Akutsu, Tomotada
name: Arellano, Fabián Erasmo Peña
name: Shoda, Ayaka
name: Fujii, Yoshinori
name: Okutomi, Koki
name: Barton, Mark Andrew
name: Takahashi, Ryutaro
name: Komori, Kentaro
name: Aritomi, Naoki
name: Shimoda, Tomofumi
name: Takano, Satoru
name: Takeda, Hiroki
name: Martin, Enzo Nicolas Tapia San
name: Kozu, Ryohei
name: Ikenoue, Bungo
name: Obuchi, Yoshiyuki
name: Fukushima, Mitsuhiro
name: Aso, Yoichi
name: Michimura, Yuta
name: Miyakawa, Osamu
name: Kamiizumi, Masahiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper reports on the design and characteristics of a compact module integrating an optical displacement sensor and an electromagnetic actuator for use with vibration-isolation systems installed in KAGRA, the 3-km baseline gravitational-wave detector in Japan. In technical concept, the module belongs to a family tree of similar modules called OSEMs, used in other interferometric gravitational-wave detector projects. After the initial test run of KAGRA in 2016, the sensor part, which is a type of slot sensor, was modified by increasing the spacing of the slot from 5 mm to 15 mm to avoid the risk of mechanical interference with the sensor flag. We confirm the sensor performance is comparable to that of the previous design despite the modification. We also confirm the sensor noise is consistent with the theoretical noise budget. The noise level is 0.5 nm/rtHz at 1 Hz and 0.1 nm/rtHz at 10 Hz, and the linear range of the sensor is 0.7 mm or more. We measured the response of the actuator to be 1 N/A, and also measured the resistances and inductances of coils of the actuators to confirm consistency with theory. Coupling coefficients among the different degrees of freedom were also measured and shown to be negligible, varying little between designs. A potential concern about thermal noise contribution due to eddy current loss is discussed. As of 2020, 42 of the modules are in operation at the site.
description: 19 pages, 14 figures
The Convective Urca Process with Implicit Two-Dimensional Hydrodynamics
Creators: name: Stein, Josef
name: Wheeler, J. Craig
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Consideration of the role of the convective flux in the thermodymics of the convective Urca neutrino loss process in degenerate, convective, quasi-static, carbon-burning cores shows that the convective Urca process slows down the convective current around the Urca-shell, but, unlike the "thermal" Urca process, does not reduce the entropy or temperature for a given convective volume. Here we demonstrate these effects with two-dimensional numerical hydrodynamical calculations. These two-dimensional implicit hydrodynamics calculations invoke an artificial speeding up of the nuclear and weak rates. They should thus be regarded as indicative, but still qualitative. We find that, compared to a case with no Urca-active nuclei, the case with Urca effects leads to a higher entropy in the convective core because the energy released by nuclear burning is confined to a smaller volume by the effective boundary at the Urca shell. All else being equal, this will tend to accelerate the progression to dynamical runaway. We discuss the open issues regarding the impact of the convective Urca process on the evolution to the "smoldering phase" and then to dynamical runaway.
description: 22 pages, 11 figures, accepted for publication in the Astrophysical Journal
The Dark Side of Double-Tensor Multiplets
Creators: name: Andrianopoli, Laura
name: Casale, Giuseppe
name: Ravera, Lucrezia
name: Santambrogio, Alberto
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore the properties of a set of free double-tensor multiplets in $N=2$ supersymmetry, focusing on their behavior within rigid superspace. These multiplets can be obtained from hypermultiplets by Hodge-dualizing half of their scalars, and feature an off-shell matching of bosonic and fermionic degrees of freedom. Despite this fact, the supersymmetry algebra results to close only on-shell. Our analysis is conducted both in superspace, using the geometric (rheonomic) approach, and in spacetime, comparing how our results are obtained in the two approaches. Notably, the cohomology of superspace requires that the scalars Hodge-dual to the antisymmetric tensors crucially contribute to the superspace description of the tensors super-field strengths. This shows an inherent non-locality of the theory, already in the free case, which however does not forbid a Lagrangian description.
description: 45 pages, misprints corrected, 1 reference updated
ELABORACIÓN DE MEZCLAS DE FERTILIZANTES PARA PAPA Y MAÍZ EN ELVALLE DE TOLUCA, ESTADO DE MÉXICO
Creators: name: Millan, Jose Nefthalli Martinez
name: Rebollar Rebollar, Samuel
name: Salazar, Jose Alberto Garcia
name: Jimenez, Daniel Cardoso
name: Hernandez Martinez, Juvencio
name: Rojo Rubio, Rolando
name: Portillo, Benito Albarran
name: Gonzalez Razo, Felipe De Jesus
name: Ramirez Abarca, Orsohe
name: Millan, Jose Nefthalli Martinez
name: Rebollar Rebollar, Samuel
name: Salazar, Jose Alberto Garcia
name: Jimenez, Daniel Cardoso
name: Hernandez Martinez, Juvencio
name: Rojo Rubio, Rolando
name: Portillo, Benito Albarran
name: Gonzalez Razo, Felipe De Jesus
name: Ramirez Abarca, Orsohe
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Fertilizer's formulas production
subject: net current value
subject: internal return rate
subject: modified internal return rate
subject: Agro mezclas
subject: valor presente neto
subject: tasa interna de retorno
subject: tasa interna de retorno modificada.

description: Project evaluation allows to resources optimisation, improving business's productivity and viable investments. The aim of this research was to provide technical and economic elements, to support decisions about the feasibility or not to run an agribusiness oriented to fertilizer's formulas production, used for potato and maize crops during establishment and maintenance in Toluca Valley, Estate of Mexico. The methodology used was project formulation and evaluation. The main markets were Toluca, Zinacantepec, Sultepec, Valle de Bravo and Temascaltepec municipalities. The discount rate was 13.1 %, with an estimated Net Current Value of $ 2 981 061, the Internal Return Rate (IRR) was 78.36 %, and the Modified Internal Return Rate (MIRR) was 181.44 %. The evaluation indicators exceed their critical values, reason of which, is feasible and viable to take an investment decision.
Motor ability and working memory in Omani and German primary school-aged children
Creators: name: Jansen, Petra
name: Scheer, Clara
name: Zayed, Kashef
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 150 Psychologie

description: This study investigated the motor ability and working memory performance of Omani and German primary school-aged children. One hundred eighty-five children from public schools participated in a gross motor test that integrated whole body coordination, three different ball tasks, and a 20-meter run. Furthermore, they completed four working memory tests (the Digit-Span Test forward and backwards and the Corsi Block-Tapping Test forward and backwards). Two MANOVAS with the different motor and working memory tests and one univariate analysis of the general motor ability with the between-subject factors group and gender were conducted. Additionally, correlations between motor ability and working memory scores were executed. German children outperformed Omani children in the overall measurement of motor ability, (p = .01) and all aspects of working memory, (all p< .015). There were no correlations between motor and cognitive variables, when analyzing the results for the Omani and German children separately. These findings may be a result of different educational styles or socioeconomic status and must be investigated in more detail.
Evolution of clustering structure through the momentum distributions in $^{8-10}$Be isotopes
Creators: name: Li, Songjie
name: Myo, Takayuki
name: Zhao, Qing
name: Toki, Hiroshi
name: Horiuchi, Hisashi
name: Xu, Chang
name: Liu, Jian
name: Lyu, Mengjiao
name: Ren, Zhongzhou
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the evolution of clustering structure through the momentum distributions in the $^{8-10}$Be isotopes. The nucleon dynamics within the inter-cluster antisymmetrization are discussed via the momentum distribution of a Brink type $α$-$α$ wave function. For the state with a small $α$-$α$ distance, we observe a significant depression with a dip structure at zero-momentum and an enhanced tail at relatively higher momentum region. In addition, we find the "cluster structure" in the intrinsic frame of momentum space, which is complementary to its significant $α$-cluster dissolution in the coordinate space because of the strong antisymmetrization. For the physical $^{8-10}$Be isotopes, the Tohsaki-Horiuchi-Schuck-R{ö}pke (THSR) wave functions are adopted. The evolution from the dilute clustering state to the compact one is demonstrated by a successive depression at the zero-momentum of nucleon distribution for the two $α$-clusters within $^{8-10}$Be isotopes. For the compact $^{10}$Be nucleus, the momentum distribution of all nucleons shows significant depression at zero-momentum with a dip structure, which is found to be contributed by both the inter-cluster antisymmetrization and the $p$-orbit occupation of the valence neutrons. This study proposes a new window for the investigations of the $α$-clustering effects via the low-momentum components of nuclei, which is expected to be extended to the heavier nuclear clustering states.
description: 7 pages, 6 figures, under review in PRC
Atomistic simulations of dislocation mobility in Al, Ni and Al/Mg alloys
Creators: name: Olmsted, David L.
name: Hector, Louis G.
name: Curtin, W. A.
name: Clifton, R. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dislocation velocities and mobilities are studied by Molecular Dynamics simulations for edge and screw dislocations in pure aluminum and nickel, and edge dislocations in Al-2.5%Mg and Al-5.0%Mg random substitutional alloys using EAM potentials. In the pure materials, the velocities of all dislocations are close to linear with the ratio of (applied stress)/(temperature) at low velocities, consistent with phonon drag models and quantitative agreement with experiment is obtained for the mobility in Al. At higher velocities, different behavior is observed. The edge dislocation velocity remains dependent solely on (applied stress)/(temperature) up to approximately 1.0 MPa/K, and approaches a plateau velocity that is lower than the smallest "forbidden" speed predicted by continuum models. In contrast, above a velocity around half of the smallest continuum wave speed, the screw dislocation damping has a contribution dependent solely on stress with a functional form close to that predicted by a radiation damping model of Eshelby. At the highest applied stresses, there are several regimes of nearly constant (transonic or supersonic) velocity separated by velocity gaps in the vicinity of forbidden velocities; various modes of dislocation disintegration and destabilization were also encountered in this regime. In the alloy systems, there is a temperature- and concentration-dependent pinning regime where the velocity drops sharply below the pure metal velocity. Above the pinning regime but at moderate stresses, the velocity is again linear in (applied stress)/(temperature) but with a lower mobility than in the pure metal.
description: PDF, 30 pages including figures, submitted to Modelling Simul. Mater. Sci. Eng
Unveiling Interpretability in Self-Supervised Speech Representations for Parkinson's Diagnosis
Creators: name: Gimeno-Gómez, David
name: Botelho, Catarina
name: Pompili, Anna
name: Abad, Alberto
name: Martínez-Hinarejos, Carlos-D.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recent works in pathological speech analysis have increasingly relied on powerful self-supervised speech representations, leading to promising results. However, the complex, black-box nature of these embeddings and the limited research on their interpretability significantly restrict their adoption for clinical diagnosis. To address this gap, we propose a novel, interpretable framework specifically designed to support Parkinson's Disease (PD) diagnosis. Through the design of simple yet effective cross-attention mechanisms for both embedding- and temporal-level analysis, the proposed framework offers interpretability from two distinct but complementary perspectives. Experimental findings across five well-established speech benchmarks for PD detection demonstrate the framework's capability to identify meaningful speech patterns within self-supervised representations for a wide range of assessment tasks. Fine-grained temporal analyses further underscore its potential to enhance the interpretability of deep-learning pathological speech models, paving the way for the development of more transparent, trustworthy, and clinically applicable computer-assisted diagnosis systems in this domain. Moreover, in terms of classification accuracy, our method achieves results competitive with state-of-the-art approaches, while also demonstrating robustness in cross-lingual scenarios when applied to spontaneous speech production.
description: Accepted in the Special Issue on "Modelling and Processing Language and Speech in Neurodegenerative Disorders" published by Journal of Selected Topics in Signal Processing (JSTSP)
Exploring the energy landscape of aluminas through machine learning interatomic potential
Creators: name: Zhang, Lei
name: Luo, Wenhao
name: Liu, Renxi
name: Chen, Mohan
name: Yan, Zhongbo
name: Cao, Kun
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Aluminum oxide (alumina, Al$_2$O$_3$) exists in various structures and has broad industrial applications. While the crystal structure of $α$-Al$_2$O$_3$ is well-established, those of transitional aluminas remain highly debated. In this study, we propose a universal machine learning interatomic potential (MLIP) for aluminas, trained using the neuroevolution potential (NEP) approach. The dataset is constructed through iterative training and farthest point sampling, ensuring the generation of the most representative configurations for an exhaustive sampling of the potential energy surface. The accuracy and generality of the potential are validated through simulations under a wide range of conditions, including high temperatures and pressures. A phase diagram is presented that includes both transitional aluminas and $α$-Al$_2$O$_3$ based on the NEP. We also successfully extrapolate the phase diagram of aluminas under extreme conditions ([0, 4000] K and [0, 200] GPa ranges of temperature and pressure, respectively), while maintaining high accuracy in describing their properties under more moderate conditions. Furthermore, combined with our developed structure search workflow, the NEP provides an evaluation of existing $γ$-Al$_2$O$_3$ structure models. The NEP developed in this work enables highly accurate dynamic simulations of various aluminas on larger scales and longer timescales, while also offering new insights into the study of transitional aluminas structures.
GESTIÓN DE LA INNOVACIÓN TECNOLÓGICA EN PYMES AGROINDUSTRIALES CHIHUAHUENSES
Creators: name: Aranda Gutiérrez, Heriberto
name: Rebolledo, Jose Luis Solleiro
name: Ibarra, Rosario Castanon
name: Henneberry, David
name: Aranda Gutiérrez, Heriberto
name: Rebolledo, Jose Luis Solleiro
name: Ibarra, Rosario Castanon
name: Henneberry, David
Publisher: name: Unknown
Year: 2008
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: Innovation management
subject: technological development
subject: study case
subject: Gestión de la innovación
subject: desarrollo tecnológico
subject: casos de estudio

description: This research, which was made within the category of a multiple case study, has as an objective to contribute to the understanding of the processes that explain the Management of Technological Innovation (MTI) in small and medium enterprises (SME's) with low investment in research and development (R&D), analyzing the internal and external variables that set out the process. Methodological approaches and susceptible concepts to be used were examined.An instrument that allowed the evaluation and learning of the variables details from MTI in SME`s from the lacto industrial area and from the national capital that have had outstanding efforts ending up in specific products that have been introduced into the market. The main innovations, management functions and the key factors of success that are necessary for their operation were detected through a visit to the plants. The results are presented by means of a narrative structure.
CARACTERIZACIÓN DE LA PRODUCCIÓN DEL CULTIVO DE ALGODONERO (Gossypium hirsutum, L.) EN LA COMARCA LAGUNERA
Creators: name: Wong, Ricardo Miranda
name: Wong, Ricardo Miranda
Publisher: name: Unknown
Year: 2008
Subjects: subject: Crop Production/Industries
subject: Cotton
subject: harvest
subject: water
subject: price
subject: fiber
subject: Algodonero
subject: cosecha
subject: agua
subject: precio
subject: fibra.

description: The cotton crop ( L.) has been cultivated in the Region Lagunera since more 150 years; however, the extension in the crop area has seen decreased considerable manner in the last years, due to several factors. This job investigated some of them, between that can to mention harvest area, water storage in the ditch availability, cotton seed area percentage with respect to the total area, international sale price cotton fiber, with the purpose to have one clearer idea about of industrial crop behavior.
Layer-by-layer formation of oligoelectrolyte multilayers: a combined experimental and computational study
Creators: name: Micciulla, Samantha
name: Sánchez, Pedro A.
name: Smiatek, Jens
name: Qiao, Baofu
name: Sega, Marcello
name: Laschewsky, André
name: Holm, Christian
name: von Klitzing, Regine
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: For the first time, the combination of experimental preparation and results of fully atomistic simulations of an oligoelectrolyte multilayer (OEM) made of poly(diallyl dimethyl ammonium chloride)/poly(styrene sulfonate sodium salt) (PDADMAC/PSS) is presented. The layer-by-layer growth was carried out by dipping silica substrates in oligoelectrolyte solutions and was modeled by means of atomistic molecular dynamics simulations with a protocol that mimics the experimental procedure up to the assembly of four layers. Measurements of OEM thickness, surface roughness and amount of adsorbed oligoelectrolyte chains obtained from both approaches are compared. A good agreement between simulated and experimental results was found, with some deviations due to intrinsic limitations of both methods. However, the combination of information extracted from simulations to support the analysis of experimental data can overcome such restrictions and improve the interpretation of experimental results. On the other hand, processes dominated by slower kinetics, like the destabilization of adsorbed layers upon equilibration with the surrounding environment, are out of reach for the simulation modeling approach, but they can be investigated by monitoring in situ the oligoelectrolyte adsorption during the assembly process. This demonstrates how the synergistic use of simulation and experiments improves the knowledge of OEM properties down to the molecular scale.
Quintessential Kination and Cold Dark Matter Abundance
Creators: name: Pallis, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The generation of a kination-dominated phase by a quintessential exponential model is investigated and the parameters of the model are restricted so that a number of observational constraints (originating from nucleosynthesis, the present acceleration of the universe and the dark-energy-density parameter) are satisfied. The decoupling of a thermal cold dark matter particle during the period of kination is analyzed, the relic density is calculated both numerically and semi-analytically and the results are compared with each other. It is argued that the enhancement, with respect to the standard paradigm, of the cold dark matter abundance can be expressed as a function of the quintessential density parameter at the onset of nucleosynthesis. We find that values of the latter quantity close to its upper bound require the thermal-averaged cross section times the velocity of the cold relic to be almost three orders of magnitude larger than this needed in the standard scenario so as compatibility with the cold dark matter constraint is achieved.
description: Published version