cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Relational patterns of gene expression via nonmetric multidimensional scaling analysis
Creators: name: Taguchi, Y. -h.
name: Oono, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Genomics (q-bio.GN)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: Motivation:Microarray experiments result in large scale data sets that require extensive mining and refining to extract useful information. We demonstrate the usefulness of (nonmetric) multidimensional scaling (MDS) method in analyzing a large number of genes. Applying MDS to the microarray data is certainly not new, but the existing works are all on small numbers (< 100) of points to be analyzed. We have been developing an efficient novel algorithm for nonmetric multidimensional scaling (nMDS) analysis for very large data sets as a maximally unsupervised data mining device. We wish to demonstrate its usefulness in the context of bioinformatics (unraveling relational patterns among genes from time series data in this paper). Results: The Pearson correlation coefficient with its sign flipped is used to measure the dissimilarity of the gene activities in transcriptional response of cell-cycle-synchronized human fibroblasts to serum [Iyer {\it et al}., Science {\bf 283}, 83 (1999)]. These dissimilarity data have been analyzed with our nMDS algorithm to produce an almost circular relational pattern of the genes. The obtained pattern expresses a temporal order in the data in this example; the temporal expression pattern of the genes rotates along this circular arrangement and is related to the cell cycle. For the data we analyze in this paper we observe the following. If an appropriate preparation procedure is applied to the original data set, linear methods such as the principal component analysis (PCA) could achieve reasonable results, but without data preprocessing linear methods such as PCA cannot achieve a useful picture. Furthermore, even with an appropriate data preprocessing, the outcomes of linear procedures are not as clearcut as those by nMDS without preprocessing.
description: 16 pages, 7 figures, to appear in Bioinformatics
A produção de leite no Rio Grande do Sul: produtividade, especialização e concentração (1990 – 2009)
Creators: name: Marion Filho, Pascoal Jose
name: Fagundes, Jones De Oliveira
name: Schumacher, Gabriela
name: Marion Filho, Pascoal Jose
name: Fagundes, Jones De Oliveira
name: Schumacher, Gabriela
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Milk
subject: Productivity
subject: Location Quotient
subject: Location Gini

description: This article evaluates the evolution of productivity, specialization and concentration of milk production in microregions of Rio Grande do Sul in the period 1990 to 2009. Productivity is measured by the ratio between milk production and the number of cows milked, the specialization is calculated from the location quotient (QL) and concentration is determined by the location Gini (GL), according to the geographical division of microregions of IBGE. The survey results showed that increases productivity, specialization and concentration in milk production, with emphasis on microregions of Três Passos, with QL equal to 2,33 in 2008, and Passo Fundo, with productivity of 4.197 liters/cow in 2009. The location Gini also showed a significant growth in the period 1990-2009 (56.25%), went from 0.32 to 0.50.
D3.3 Set of social, environmental, economic, and financial key performance indicators
Creators: name: Gómez Meirás, Miguel
name: Zerilli, Paola Z
name: Djeddi, Ahmed
name: Gómez, Ana Belén
Publisher: name: Zenodo
Year: 2025

description: This deliverable focuses on defining representative metrics and indexes for evaluating theimplementation of SUPERSHINE solutions in the lighthouse districts. The work includes defining andformulating Key Performance Indicators (KPIs) at various levels of granularity, tailored to the scope

of specific lighthouse interventions. Performance indicator definitions will be accompanied by case-specific data collection guidelines, assessment methods, and data requirements needed for monitoring.To analyse the varying actions developed in each district, we structured the intervention followingthe energy triangle (active, passive, and renewable), taking into account customer behaviour.Energy - Technical Key Performance Indicators (KPIs) integrate a methodology to permit thecalculation of the impacts for the different improvements in light demonstrators. To calculate theseparts, implement a methodology to connect the impacts developed in each different area withspecifying interventions that it intends to measure.A Life Cycle Sustainability Assessment (LCSA) will be conducted, considering the three pillars ofsustainability: environment, social, and costs, at both building and district levels. A tailoredapproach through a weighted scoring system will be designed and developed within the project toassess the sustainable potential of each integrated solution’s scalability, replicability, andprofitability.Financial - Energy efficiency renovation projects in social housing buildings and districts aim toreduce energy consumption, lower costs, and improve living conditions for residents. Measuringfinancial KPIs is crucial for evaluating the success and economic viability of energy efficiencyrenovation projects in social housing buildings and at the district level. This deliverable considersanalysing the return on Investment (ROI), Net Present Value (NPV) and Payback Period among otherfinancial KPIs so that stakeholders can make informed decisions, optimise resource allocation, andmaximise the benefits of energy efficiency initiatives while ensuring long-term financialsustainability. Also, this deliverable describes the financial evaluation methodology to conduct acomprehensive cost-benefit analysis to quantify the financial impacts of the EE renovation project.Consider both direct (energy savings) and indirect benefits (e.g., improved comfort, reducedmaintenance, and operating costs).A specific online survey, integrated into the SUPERSHINE portal and tailored to the differentstakeholders involved in the project has been developed to facilitate data collection and inventoryassessment. Life Cycle (LC) studies will be performed, involving the definition of the goal, systemboundaries, and relevant KPIs; development of the Life Cycle Inventory (LCI); performance of theimpact assessment; and analysis of the results, interpretation, and conclusions.
A novel interleaved and distributed FIFO
Creators: name: Sood, Santosh
Publisher: name: University of British Columbia
Year: 2010

description: In deep submicron technologies, the delays of metal lines continue to increase in spite of an increasing number of metal layers and the use of low-k dielectrics. Thus, some form of interconnect pipelining is required in throughput intensive designs. Various approaches have been used for interconnect pipelining, e.g., synchronous, asynchronous, GALS and source-synchronous, and each presents a trade-off between the throughput and latency that can be achieved. This work provides an evaluation of the synchronous and the source-synchronous methods of interconnect pipelining. Reference designs for various synchronous and source-synchronous signalling methods are presented. The source-synchronous method entails the forwarding of a clock along with data; this forwarded clock suffers from skew due to process, voltage and temperature variations along the forwarded path. A FIFO is used to compensate for the skew between the forwarded clock and the local clock at the receiver end. We present a novel, interleaved and distributed FIFO that implements wave pipelining between the FIFO stages. This FIFO design helps to lower the latency of the source-synchronous interconnect. A metric of comparison called velocity is introduced, and a comparison of the performance of synchronous and source-synchronous signalling is presented on the metrics of throughput, velocity and power.
CO emission and CO hotspots in diffuse molecular gas
Creators: name: Liszt, Harvey S
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We observed $λ$3mm \cotw, \coth, \coei, \hcop, HCN and CS emission from diffuse molecular gas along sightlines with \EBV\ $\approx$ 0.1 - 1 mag. Directions were mostly chosen for their proximity to sightlines toward background mm-wave continuum sources studied in \hcop\ absorption, at positions where maps of \cotw\ at 1\arcmin\ resolution showed surprisingly bright integrated CO J=1-0 emission \WCO\ = 5-12 K-\kms\ but we also observed in L121 near \zoph. Coherence emerges when data are considered over a broad range of \cotw\ and \coth\ brightness. \WCO/\Wth\ and N(\cotw)/N(\coth) are 20-40 for \WCO\ $\la 5$ K-\kms\ and N(CO) $\la 5\times 10^{15}\pcc$, increasing with much scatter for larger \WCO\ or N(CO). N(\coth)/N(\coei) $> 20-40$ ($3σ$) vs. an intrinsic ratio $^{13}$C/$^{18}$O = 8.4, from a combination of selective photodissociation and enhancement of \coth. The observations are understandable if \cotw\ forms from the thermal recombination of \hcop\ with electrons, after which the observed \coth\ forms via endothermic carbon isotope exchange with $^{13}$C\p. \WCS/\WCO\ increases abruptly for \WCO\ $\ga 10$ K-\kms\ and \WCS/\Whcop\ is bimodal, showing two branches having N(CS)/N(\hcop) $\approx 5$ and 1.25. Because CO formation and \hcop\ excitation both involve collisions between \hcop\ and ambient electrons, comparison of the CO and \hcop\ emission shows that the CO hotspots are small regions of enhanced N(CO) occupying only a small fraction of the column density of the medium in which they are embedded. \hcop/CO and HCN/CO brightness ratios are 1-2\% with obvious implications for determinations of the true dense gas fraction.
description: Accepted to ApJ
ScripTONES: Sentiment-Conditioned Music Generation for Movie Scripts
Creators: name: Veerendranath, Vishruth
name: Masti, Vibha
name: Gupta, Utkarsh
name: Chaudhuri, Hrishit
name: Srinivasa, Gowri
Publisher: name: arXiv
Year: 2024
Subjects: subject: Multimedia (cs.MM)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Film scores are considered an essential part of the film cinematic experience, but the process of film score generation is often expensive and infeasible for small-scale creators. Automating the process of film score composition would provide useful starting points for music in small projects. In this paper, we propose a two-stage pipeline for generating music from a movie script. The first phase is the Sentiment Analysis phase where the sentiment of a scene from the film script is encoded into the valence-arousal continuous space. The second phase is the Conditional Music Generation phase which takes as input the valence-arousal vector and conditionally generates piano MIDI music to match the sentiment. We study the efficacy of various music generation architectures by performing a qualitative user survey and propose methods to improve sentiment-conditioning in VAE architectures.
description: Presented at NeurIPS 2023 - ML For Audio workshop. To appear in proceedings of AIML Systems 2023 - Generative AI
Electron Correlations in a Quantum Dot with Bychkov-Rashba Coupling
Creators: name: Chakraborty, Tapash
name: Pietilainen, Pekka
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We report on a theoretical approach developed to investigate the influence of Bychkov-Rashba interaction on a few interacting electrons confined in a quantum dot. We note that the spin-orbit coupling profoundly influences the energy spectrum of interacting electrons in a quantum dot. Inter-electron interaction causes level crossings in the ground state and a jump in magnetization. As the coupling strength is increased, that jump is shifted to lower magnetic fields. Low-field magnetization will therefore provide a direct probe of the spin-orbit coupling strength in a quantum dot.
Helical coronal ejections and their role in the solar cycle
Creators: name: Brandenburg, Axel
name: Sandin, Christer
name: Käpylä, Petri J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The standard theory of the solar cycle in terms of an alpha-Omega dynamo hinges on a proper understanding of the nonlinear alpha effect. Boundary conditions play a surprisingly important role in determining the magnitude of alpha. For closed boundaries, the total magnetic helicity is conserved, and since the alpha effect produces magnetic helicity of one sign in the large scale field, it must simultaneously produce magnetic helicity of the opposite sign. It is this secondary magnetic helicity that suppresses the dynamo in a potentially catastrophic fashion. Open boundaries allow magnetic helicity to be lost. Simulations are presented that allow an estimate of alpha in the presence of open or closed boundaries, either with or without solar-like differential rotation. In all cases the sign of the magnetic helicity agrees with that observed at the solar surface (negative in the north, positive in the south), where significant amounts of magnetic helicity can be ejected via coronal mass ejections. It is shown that open boundaries tend to alleviate catastrophic alpha quenching. The importance of looking at current helicity instead of magnetic helicity is emphasized and the conceptual advantages are discussed.
description: 8 pages, 7 figs, IAU Symp. 223, In: Multi-Wavelength Investigations of Solar Activity. Eds: A.V. Stepanov, E.E. Benevolenskaya & A.G. Kosovichev
Incorporating Cellular Stochasticity in Solid--Fluid Mixture Biofilm Models
Creators: name: Carpio, Ana
name: Cebrian, Elena
Publisher: name: arXiv
Year: 2024
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Numerical Analysis (math.NA)
subject: Analysis of PDEs (math.AP)
subject: Biological Physics (physics.bio-ph)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: The dynamics of cellular aggregates is driven by the interplay of mechanochemical processes and cellular activity. Although deterministic models may capture mechanical features, local chemical fluctuations trigger random cell responses, which determine the overall evolution. Incorporating stochastic cellular behavior in macroscopic models of biological media is a challenging task. Herein, we propose hybrid models for bacterial biofilm growth, which couple a two phase solid/fluid mixture description of mechanical and chemical fields with a dynamic energy budget-based cellular automata treatment of bacterial activity. Thin film and plate approximations for the relevant interfaces allow us to obtain numerical solutions exhibiting behaviors observed in experiments, such as accelerated spread due to water intake from the environment, wrinkle formation, undulated contour development, and the appearance of inhomogeneous distributions of differentiated bacteria performing varied tasks.
Competitividade do SAG da silvicultura no Mato Grosso do Sul: um enfoque sobre as florestas plantadas de eucalipto
Creators: name: Fagundes, Mayra Batista Bitencourt
name: Schmidt, Vanessa
name: Fagundes, Mayra Batista Bitencourt
name: Schmidt, Vanessa
Publisher: name: Unknown
Year: 2011
Subjects: subject: Land Economics/Use
subject: Resource /Energy Economics and Policy
subject: Forest
subject: Quasi Rent
subject: System

description: The eucalyptus plantations constitute a major segment of the Agribusiness System of Forestry in Mato Grosso do Sul, thus, this study has focused primarily examine the competitiveness of this segment by applying a quantitative methodology for analyzing economic results called Quasi-Income, stating ultimately its competitiveness. Moreover, to capture the information held visiting the institutional actors directly connected to the system, which also allowed the identification of strengths – such as a favorable climate, large areas for forest planting , policy environment, wellstructured and very active, new arrivals agents that complement the chains, rates of return and profitability positive; and negative – failing infrastructure for disposal of raw materials and final products, poor quality and maintenance of local roads with consequent increase in transaction costs , low skills and lack of manpower and technology imports from the other regions of the country – that influence the competitiveness , which are briefly discussed in the manuscript as a diagnosis. Faced activity proved to be not competitive for the period of analysis.
Additional file 1 of Identifying and selecting implementation theories, models and frameworks: a qualitative study to inform the development of a decision support tool
Creators: name: Strifler, Lisa
name: Barnsley, Jan M.
name: Hillmer, Michael
name: Straus, Sharon E.
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. Supplemental file with COREQ checklist (Appendix 1), interview guide (Appendix 2), and citations for theories, models and frameworks used by participants (Appendix 3).
Perfil socioeconômico de produtores de leite da região sudoeste do Paraná: um estudo a partir de diferentes níveis de produtividade
Creators: name: Parre, Jose Luiz
name: Bankuti, Sandra Mara Schiavi
name: Zanmaria, Nelito Antonio
name: Parre, Jose Luiz
name: Bankuti, Sandra Mara Schiavi
name: Zanmaria, Nelito Antonio
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Milk chain
subject: milk productivity
subject: Southwestern Paraná

description: The aim of this work is to characterize milk producers in Southwestern Paraná. It has been considered technical, technological, managerial, economic and social aspects. 202 producers have been interviewed, grouped into three distinct clusters, according to productivity levels. As results, milk producers in the region presented, on average, superior indicators when compared to data in Paraná, ratifying better organization and productive system in the region. Relevant differences among producers with different productivity levels could be pointed out. Low-productivity producers, in general, are more engaged in rural work, produce low volume of milk and work in milk activity for longer time, which can indicate path dependency. Besides that, higher percentage of producers in that group doesn’t have milk as main activity and present limitations related to either farm size or farm characteristics. Other limitations are related to technological level, management systems, access to credit, technical and managerial assistance, training and investments in milk activity.
Características de la demanda por carne bovina de la comunidad hispana en los estados Unidos de América.
Creators: name: Lanfranco, Bruno A.
name: Lanfranco, Bruno A.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: consummers
subject: consumption patterns
subject: ethnic food

description: A number of conclusions can be drawn from this research: 1) the NAFTA constitutes a key market for Uruguay beef; 2) beef import forecasts by the three NAFTA countries are placed in record numbers; 3) the Hispanic community is rapidly becoming the largest ethnic minority in the U.S., with an estimated yearly power purchase of more than $400 billion; 4) more than three-quarters of the Latino population in the U.S. concentrates in the West and South regions of the country; 64% live in urban areas of more than 1.2 million inhabitants. California (SE and NE of San Francisco and surroundings of Los Angeles) and Texas (Houston and El Paso influence areas) would be the main objectives for effective action through programs of marketing and promotion; 5) Hispanic households show different consumption patterns in comparison to other communities; 6) Hispanic families have a clear preference for beef over other meats (pork, chicken and fish), in comparison to households of other ethnic origins; 7) changes in family income have a significant effect on the probability of consuming beef steak cuts, in households of all origins, but particularly in Hispanics; 8) the consumption of ground beef and chicken showed to be less sensitive to changes in family income than other meat products; both also showed the less sensitive to price changes. In the case of Latino households, the most price elastic product was beef steak; 9) the role of demographic and socioeconomic characteristics in the demand for meat is not consistent between the different ethnic communities.
Characterization of invariant measures at the leading edge for competing particle systems
Creators: name: Ruzmaikina, Anastasia
name: Aizenman, Michael
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60G70, 60G55, 62P35. (Primary)

description: We study systems of particles on a line which have a maximum, are locally finite and evolve with independent increments. ``Quasi-stationary states'' are defined as probability measures, on the σ-algebra generated by the gap variables, for which joint distribution of gaps between particles is invariant under the time evolution. Examples are provided by Poisson processes with densities of the form ρ(dx)=e^{-sx}s dx, with s>0, and linear superpositions of such measures. We show that, conversely, any quasi-stationary state for the independent dynamics, with an exponentially bounded integrated density of particles, corresponds to a superposition of Poisson processes with densities ρ(dx)=e^{-sx}s dx with s>0, restricted to the relevant σ-algebra. Among the systems for which this question is of some relevance are spin-glass models of statistical mechanics, where the point process represents the collection of the free energies of distinct ``pure states,'' the time evolution corresponds to the addition of a spin variable and the Poisson measures described above correspond to the so-called REM states.
description: Published at http://dx.doi.org/10.1214/009117904000000865 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
On Lorentz-invariant 2D equations admitting long-lived localized solutions with a nontrivial structure
Creators: name: Salimov, R. K.
name: Salimov, T. R.
name: Ekomasov, E. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The article studies Lorentz-invariant 2D equations with long-lived ($t \backsim 1000$ ) localized solutions. In the case of three scalar fields localized solutions with a nontrivial internal structure similar to the hadron structure are showed. In this case, the solutions of the equations are analogous to the confinement model by flux tube.
Adjacent channel interference in overlapping access points of OFDM WLANs
Creators: name: Khan, Salman Aslam
Publisher: name: University of British Columbia
Year: 2010

description: Interference analysis has always been a key issue for WLAN systems, because of the unregulated nature of the Industrial Scientific and Medical (ISM) bands that they operate in. However, an aspect of interference generally not considered is adjacent channel interference (ACI) from a neighboring WLAN operating on a standard defined non-overlapping channel. Because standard defined nonoverlapping channels are not truly non-overlapping but are based on limits set on the transmit signal spectrum, situations may arise where this interference will significantly degrade performance. With escalating deployment of WLANs in overlapping areas and the limited number of valid operating channels available, ACI may become a major hindrance to the optimal functioning of WLANs. In this work we present a detailed analysis of ACI that access points (APs) of OFDM WLANs deployed in overlaying coverage areas may experience when individual APs operate on IEEE 802.1 la defined non-overlapping channels. We investigate scenarios where ACI is most likely to occur. We also investigate the parameters that affect the severity of this interference and how system performance is degraded in the presence of ACI (in terms of physical layer parameters). We use these results to suggest minimum separation distances between APs that would render the effects of ACI negligible. Furthermore, several ACI mitigation techniques are described and their effectiveness for various scenarios is investigated. Results from our analysis may be used to improve network deployment strategies for large scale multi-AP WLANs and to develop routines that allow better coexistence strategies for APs deployed in overlapping coverage areas.
Demanda social por programas de atención y educación de la primera infancia (AEPI) en el Perú: ¿Qué tipo de programas de AEPI demanda la población? ¿Cuáles son las posibilidades y retos de llevar a escala este tipo de intervenciones?
Creators: name: Guerrero, Gabriela
name: Leon, Juan
name: Guerrero, Gabriela
name: Leon, Juan
Publisher: name: Unknown
Year: 2012
Subjects: subject: Research Methods/ Statistical Methods
subject: Primera infancia
subject: Programas sociales
subject: Puno
subject: Ancash
subject: Perú
subject: Early childhood
subject: Aid programmes
subject: Peru

description: Con miras a proveer información relevante para planificar el escalamiento (scale-up) de servicios de programas de atención y educación de la primera infancia (AEPI) orientados a niños menores de tres años, se realiza un estudio de la demanda social de este tipo de intervenciones en dos distritos de la Región Puno (Acora y Yunguyo) y un distrito de la Región Áncash (Huaraz). Se seleccionaron distritos que tuvieran tanto población urbana como rural, así como indígena, y en los que se implementaran programas públicos de AEPI (Wawa Wasi, Cunas Públicas, SET, PIET o PIETBAF). Se encuentra, en primer lugar, que la cobertura de los programas de AEPI en las zonas estudiadas es baja, pero no se presentan brechas por nivel socioeconómico. En segundo lugar, las familias usuarias tienen una percepción positiva sobre los programas de AEPI. En tercer lugar, las familias no usuarias lo son por una falta de oferta de programas de AEPI y porque desconfían de la calidad de la atención y el trato que se les da a los niños. En cuarto lugar, la mayoría de los actores entrevistados considera que el tipo de programa más adecuado para niños menores de tres años es un programa educativo basado en centro, valorándose el hecho de que los programas AEPI tengan un componente educativo explícito. Finalmente, sobre la base de las opiniones y percepciones de los actores locales, se sugieren aspectos a tener en cuenta para planificar un eventual scale-up de este tipo de programas.
¿La cuna marca las oportunidades y el rendimiento educativo? Una mirada al caso peruano.
Creators: name: Cueto, Santiago
name: Guerrero, Gabriela
name: Leon, Juan
name: Zapata, Mayli
name: Freire, Silvana
name: Cueto, Santiago
name: Guerrero, Gabriela
name: Leon, Juan
name: Zapata, Mayli
name: Freire, Silvana
Publisher: name: Unknown
Year: 2013
Subjects: subject: Research Methods/ Statistical Methods
subject: Rendimiento escolar
subject: Aprendizaje
subject: Matemáticas
subject: Educación primaria
subject: Educación
subject: Perú
subject: Academic achievement
subject: Learning
subject: Primary education
subject: Education
subject: Peru
subject: Mathematics
subject: FOS: Mathematics

description: La investigación educativa muestra una estrecha correlación entre el rendimiento de los estudiantes peruanos y su nivel socioeconómico (NSE). En este documento se usan datos del estudio longitudinal Niños del Milenio para analizar si las oportunidades de aprendizaje (ODA) en matemática de los estudiantes se asocian al NSE y al rendimiento. Las ODA fueron estimadas a partir del análisis de los cuadernos de estudiantes de cuarto de primaria en escuelas de diverso tipo al interior del país. También se administraron encuestas a sus docentes. El análisis evidencia que el NSE de la familia al año de edad predice las ODA y el rendimiento once años después. Las diferencias en las ODA se dan principalmente en el número de ejercicios realizados y el porcentaje de ejercicios correctos, a favor de estudiantes de NSE alto. También se halla que en general los ejercicios presentan un bajo nivel de demanda cognitiva. Finalmente, las capacidades trabajadas en clase distan bastante de las que presenta el Diseño Curricular Nacional para cuarto grado de primaria. Las variables de ODA se asocian positivamente con el rendimiento, aun luego de controlar por una serie de variables (incluido el NSE). Se encuentra que, en contextos de bajo NSE, contar con altas ODA lleva a mejoras significativas en el rendimiento. Así, mejorar las ODA podría ser un instrumento para disminuir la inequidad que agobia a la educación peruana.
Costs of Overcoming Market Entry Constraints to Uganda's Export-Led Growth Strategy
Creators: name: Nichodemus, Rudaheranwa
name: Madina, Guloba
name: Nabiddo, Winnie
name: Nichodemus, Rudaheranwa
name: Madina, Guloba
name: Nabiddo, Winnie
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agribusiness
subject: International Development
subject: International Relations/Trade
subject: Production Economics
subject: Exports
subject: Trade commodities
subject: EPRC

description: Uganda's export sector has experienced tremendous growth over the last two decades...
Comportamiento del consumidor en la compra de carne de cordero con IGP-Ternasco de Aragon
Creators: name: Gracia, Azucena
name: Gracia, Azucena
Publisher: name: Unknown
Year: 2005
Subjects: subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Comportamiento de compra
subject: consumidor
subject: cordero
subject: IGP-Ternasco de Aragon
subject: purchase behavior
subject: consumer
subject: lamb
subject: PGI-Ternasco de Aragon (Spain).

description: El objetivo de este trabajo es estudiar el comportamiento del consumidor argones en la compra de carne de cordero con IGP-Ternasco de Aragon. Para ello se han utilizado datos de una encuesta sobre actitudes y habitos de compra de carne de cordero efectuada en Aragon en 2001. Los resultados del trabajo indican que una actidad positiva de los consumidores hacia la carne de cordero con IGP es el aspecto clase en la decision de compra de este tipo carne de cordero en Aragon ya que no solo conduce a un mayor numero de consumidores potenciales sino que induce a un mayor consumo relative. Ademas, lost potenciales consumidores de carne de cordeo con IGP son aquellos que pertenecen a hogares sin hijos menores de 6 anos, de mayor tamano, queviven en nucleos urbanos y en los que la mujer es la responsable de la compra de alimentos en el hogar. Se trata de personas mas preocupadas e involucradas con la alimentacion que intentan swguir una vida mas sana y que en el momento de comprar carnes valoran mas el etiquetado, la garantia y el que posea EGP...The aim of this work is analyze purchasing consumer behavior towards Protected Geographical Indication PGI lamb meat. Data comes from a survey on consumption and attitudes towards lamb meat conducted in Aragon (Spain) in 2001. Resultsindicate that a positive attitude towards the product is the main factor explaining the purchasing behaviour for PGI lamb meat in Aragon because it indicates not only new consumers to buy the products but also, to increase its purchase by those consumers that already buy the product. In addition, new consumers of this product are those who have no kids, with larger size households, who live in urban areas and are mainly women. They are more concerned and involved with food, try to follow a healthy diet and when purchasing meat, they give higher importance to labeling, guarantee and PGI.
Projected changes in the Iberian Peninsula drought characteristics
Creators: name: Ojeda, M. García-Valdecasas
name: Gámiz-Fortis, S. R.
name: Rosa-Cánovas, J. J.
name: Romero-Jiménez, E.
name: Yeste, P.
name: Castro-Díez, Y.
name: Esteban-Parra, M. J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: High spatial resolution drought projections for the Iberian Peninsula (IP) have been examined in terms of duration, frequency, and severity of drought events. For this end, a set of regional climate simulations was completed using the Weather Research and Forecasting (WRF) model driven by two global climate models (GCMs), the CCSM4 and the MPI-ESM-LR, for a near (2021-2050) and a far (2071-2100) future, and under two representative concentration pathway (RCP) scenarios (RCP4.5 and RCP8.5). Projected changes for these simulations were analyzed using two drought indices, the Standardized Precipitation Evapotranspiration Index (SPEI) and the Standardized Precipitation Index (SPI), considering different timescales (3- and 12-months). The results showed that the IP is very likely to undergo longer and more severe drought events. Substantial changes in drought parameters (i.e., frequency, duration, and severity) were projected by both indices and at both time scales in most of the IP. These changes are particularly strong by the end of the century under RCP8.5. Meanwhile, the intensification of drought conditions is expected to be more moderate for the near future. However, the results also indicated key differences between indices. Projected drought conditions by using the SPEI showed more severe increases in drought events than those from SPI by the end of the century and, especially, for the high-emission scenario. The most extreme conditions were projected in terms of the duration of the events. Specifically, results from the 12-month SPEI analysis suggested a significant risk of megadrought events (drought events longer than 15 years) in many areas of IP by the end of the century under RCP8.5.
Un metaodo de analisis economico-financiero explicativo de la eficiencia temporal de las grandes empresas del sector agroalimentario espanol
Creators: name: Blasco, Ana
name: Moya, Ismael
name: Blasco, Ana
name: Moya, Ismael
Publisher: name: Unknown
Year: 2005
Subjects: subject: Food Security and Poverty
subject: Research Methods/ Statistical Methods
subject: Eficiencia
subject: empresas agroalimentarias
subject: DEA
subject: regresion de datos de panel
subject: efficiency
subject: food industry
subject: regression of panel data

description: El objetivo del presente trabajo es formular un modelo explicativo de la eficiencia de las mayors empresas del sector agroalimentario espanol durante el periodo 1996-2000. Para ello, se ha utilzado un procedimiento bietapico que combina la metodologia DEA, concretamente el metodo de sistema de precios unicos, con la regresion restringida por analisis factorial de datos de panel. El modelo final permite conocer la contribucion y significacion estadistica de variables relacionadas con los resultados economicos y la estructura financiera sobre el comportamiento eficiente de estas empresas... The aim of the present work is to formulate an explanatory model of the efficiency of the biggest companies in the Spanish food industry during the period 1996-2000. To do so a two-step methodology has been used which combines the DEA method, more concretely the system of single prices, with a regression restricted by the factorial analysis of panel data. The final model reveals the contribution and statistical meaning of variables related to the economic results and the financial structure about the efficient behaviour of these firms.
Two-stage framework for optic disc localization and glaucoma classification in retinal fundus images using deep learning
Creators: name: Bajwa, Muhammad Naseer
name: Malik, Muhammad Imran
name: Siddiqui, Shoaib Ahmed
name: Dengel, Andreas
name: Shafait, Faisal
name: Neumeier, Wolfgang
name: Ahmed, Sheraz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: With the advancement of powerful image processing and machine learning techniques, CAD has become ever more prevalent in all fields of medicine including ophthalmology. Since optic disc is the most important part of retinal fundus image for glaucoma detection, this paper proposes a two-stage framework that first detects and localizes optic disc and then classifies it into healthy or glaucomatous. The first stage is based on RCNN and is responsible for localizing and extracting optic disc from a retinal fundus image while the second stage uses Deep CNN to classify the extracted disc into healthy or glaucomatous. In addition to the proposed solution, we also developed a rule-based semi-automatic ground truth generation method that provides necessary annotations for training RCNN based model for automated disc localization. The proposed method is evaluated on seven publicly available datasets for disc localization and on ORIGA dataset, which is the largest publicly available dataset for glaucoma classification. The results of automatic localization mark new state-of-the-art on six datasets with accuracy reaching 100% on four of them. For glaucoma classification we achieved AUC equal to 0.874 which is 2.7% relative improvement over the state-of-the-art results previously obtained for classification on ORIGA. Once trained on carefully annotated data, Deep Learning based methods for optic disc detection and localization are not only robust, accurate and fully automated but also eliminates the need for dataset-dependent heuristic algorithms. Our empirical evaluation of glaucoma classification on ORIGA reveals that reporting only AUC, for datasets with class imbalance and without pre-defined train and test splits, does not portray true picture of the classifier's performance and calls for additional performance metrics to substantiate the results.
description: 16 Pages, 10 Figures
Statistical distribution of gravitational-lensing excursion angles: Winding ways to us from the deep universe
Creators: name: Hamana, Takashi
name: Bartelmann, Matthias
name: Yoshida, Naoki
name: Pfrommer, Christoph
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate statistical distributions of differences in gravitational-lensing deflections between two light rays, the so-called lensing excursion angles. A probability distribution function of the lensing excursion angles, which plays a key role in estimates of lensing effects on angular clustering of objects (such as galaxies, QSOs and also the CMB temperature map), is known to consist of two components; a Gaussian core and an exponential tail. We use numerical gravitational-lensing experiments in a Lambda-CDM cosmology for quantifying these two components. We especially focus on the physical processes responsible for generating those two components. We develop a simple empirical model for the exponential tail which allows us to explore its origin. We find that the tail is generated by the coherent lensing scatter by massive halos with M>10^14h^-1Msun at z<1 and that its exponential shape arises due to the exponential cut-off of the halo mass function at that mass range. On scales larger than 1 arc minute, the tail does not have a practical influence on the lensing effects on the angular clustering. Our model predicts that the coherent scatter may have non-negligible effects on angular clustering at sub-arcminute scales.
description: 11 pages, 14 figures, submitted to MNRAS
La estructura productiva de la cadena de la madera en la Comunidad de Madrid
Creators: name: Balteiro, Luis Díaz
name: Herruzo, A. Casimiro
name: Nunez, Margarita Martinez
name: Balteiro, Luis Díaz
name: Herruzo, A. Casimiro
name: Nunez, Margarita Martinez
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agribusiness
subject: Land Economics/Use
subject: Economia forestal
subject: industria forestal
subject: cadena de la madera
subject: Madrid
subject: forest economics
subject: wood-based industry

description: Este trabajo pretende, en primer lugar, analizar la importancia de los distintos eslabones que componen la cadena de la madera en Madrid, comunidad caracterizada por una escasisima oferta endogen de materia prima, A continuacion, se estudian aspectos de la estructura productive que ayudan a comprender la composicion y evolucion de este sector. Los resultados muestran, dentro de laheterogeneidad entre los diferentes sectores, un conjunto industrial basante atomizado, poco especializado, con una tasa de cobertura del comercio exterior muy desfavorable, y con productivadad superior a la media de la industra, Sin embardo, su imprtancia en la industria madrilena es bastante notable en aspectos como la produccion o el empleo...This article studies the wood-based industry in the Comunidad de Madrid through the analysis of several aspects of its production structure. Although our results indicate the existence of a great diversity among the major industry groups, some common features among these companies were found; such as the predominance of small units, low specialization, increasing but lower than average labor productivity and unfavorable terms of trade. Beside these deficiencies, and even though the regional supply of raw material is very limited, the wood-based industry presents a relatively large presence in Madrid in terms of employment and value added
A policy agenda for agricultural development in Kazakhstan
Creators: name: Petrick, Martin
name: Gramzow, Andreas
name: Oshakbaev, Dauren
name: Wandel, Jürgen
name: Petrick, Martin
name: Gramzow, Andreas
name: Oshakbaev, Dauren
name: Wandel, Jürgen
Publisher: name: Unknown
Year: 2014
Subjects: Agribusiness
Agricultural and Food Policy

description: Kazakhstan is now widely regarded as a key player on world agricultural markets, with considerable export potential in the wheat, beef and dairy sectors. Based on unique farm-level data, we offer new insights into the constraints that hamper further economic growth and provide an assessment of the Kazakhstani government's agricultural development strategy. Most managers in the farm survey doubt that agricultural investments deliver a sufficiently reliable return required for credit funding and thus do not take loans. In the cattle sector, there are significant problems in year-round fodder supply. The value chains for beef and dairy are bifurcated into an import-dependent chain for industrially processed products serving urban consumers, and a local chain of raw products serving rural consumers and urban bazaars. The government's modernisation strategy focuses on providing subsidised capital, but underestimates the knowledge and incentive problems inherent to such measures. The government should rather provide impartial and reliable public services to the sector, ensuring that the weakest links in food chain development are identified and private entrepreneurs are incentivised to strengthen them. Our evidence suggests that a bundle of measures designed to improve the local institutional environment of agriculture is more important than massive state funding of certain production lines.
Electron Dynamics in a DNA Molecule
Creators: name: Apalkov, V. M.
name: Chakraborty, Tapash
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We report on our theoretical investigations of the electronic states in a DNA molecule. We have used a two-leg charge ladder model where electron-electron interactions and the electron spin have been taken into account. The energy spectra for G-C and A-T base pairs obtained by numerically diagonalizing the Hamiltonian reveal a gap structure and the interaction is found to enhance the energy gaps. We also present the charge distribution in the ground state and low-lying excited states for the A-T and G-C base pairs.
Exploring of Discrete and Continuous Input Control for AI-enhanced Assistive Robotic Arms
Creators: name: Pascher, Max
name: Zinta, Kevin
name: Gerken, Jens
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Robotic arms, integral in domestic care for individuals with motor impairments, enable them to perform Activities of Daily Living (ADLs) independently, reducing dependence on human caregivers. These collaborative robots require users to manage multiple Degrees-of-Freedom (DoFs) for tasks like grasping and manipulating objects. Conventional input devices, typically limited to two DoFs, necessitate frequent and complex mode switches to control individual DoFs. Modern adaptive controls with feed-forward multi-modal feedback reduce the overall task completion time, number of mode switches, and cognitive load. Despite the variety of input devices available, their effectiveness in adaptive settings with assistive robotics has yet to be thoroughly assessed. This study explores three different input devices by integrating them into an established XR framework for assistive robotics, evaluating them and providing empirical insights through a preliminary study for future developments.
description: Companion of the 2024 ACM/IEEE International Conference on Human-Robot Interaction