301 research outputs found
Diseño y elaboración de una guía didáctica orientada a sensibilizar y motivar sobre la reducción del desperdicio de alimentos en la comunidad educativa: Concepção e elaboração de um guia didático destinado a conscientizar e motivar para a redução do desperdício alimentar na comunidade educativa
El desperdicio de alimentos es una problemática que afecta a las naciones en su conjunto, y cuya disminución es un desafío de todos y todas. Esta práctica no sólo tiene consecuencias para el medio ambiente, también puede afectar en el plano nutricional y económico ya que, por un lado, se desechan importantes cantidades de nutrientes (macronutrientes, vitaminas, minerales), fibra dietética y fitoquímicos (compuestos bioactivos como compuestos fenólicos, carotenoides, entre otros) en alimentos preparados, o bien en cáscaras, tallos u hojas, provenientes de hortalizas y frutas, las cuales habitualmente no se consumen; y además, pueden ser valorados económicamente al cuantificar el volumen de alimentos que se compraron y terminaron en la basura. Esto enfatiza la importancia de sensibilizar sobre esta temática a las comunidades educativas, con la finalidad de producir aprendizajes significativos en los niños y las niñas, que, como sujetos de derecho, deben participar como ciudadanos en las problemáticas que les afecta, desarrollando sus potencialidades de manera integral. El objetivo de este trabajo es detallar las etapas involucradas en la elaboración de la guía didáctica educativa titulada “Nada se pierde, todo se transforma”. Esta guía está dirigida a toda la comunidad educativa, niños y niñas, educadores y familias; y considera las siguiente secciones: 1° Conceptualización del desperdicio de alimentos; 2° Sensibilización; 3° Manos a la obra y 4° Reflexiones; cada una de estas secciones se elaboró y diseñó considerando los principios de enfoque horizontal, interdisciplinariedad, desarrollo inclusivo, derechos de los niños y las niñas, articulación, enfoque de género, diversidad e interculturalidad. Las diversas estrategias educativas responden a los contenidos, habilidades, y actitudes indicadas en las Bases Curriculares del Ministerio de Educación (Chile). Esta forma de abordar el desperdicio de los alimentos desde una mirada local, interdisciplinaria y con pertinencia territorial, permite motivar y sensibilizar a las comunidades educativas sobre la importancia de adoptar hábitos saludables y de consumo responsable, para contribuir con la meta 12.3 de la agenda 2030 para el desarrollo sostenible
Computational Model for Urban Growth Using Socioeconomic Latent Parameters
Land use land cover changes (LULCC) are generally modeled using multi-scale
spatio-temporal variables. Recently, Markov Chain (MC) has been used to model
LULCC. However, the model is derived from the proportion of LULCC observed over
a given period and it does not account for temporal factors such as
macro-economic, socio-economic, etc. In this paper, we present a richer model
based on Hidden Markov Model (HMM), grounded in the common knowledge that
economic, social and LULCC processes are tightly coupled. We propose a HMM
where LULCC classes represent hidden states and temporal fac-tors represent
emissions that are conditioned on the hidden states. To our knowledge, HMM has
not been used in LULCC models in the past. We further demonstrate its
integration with other spatio-temporal models such as Logistic Regression. The
integrated model is applied on the LULCC data of Pune district in the state of
Maharashtra (India) to predict and visualize urban LULCC over the past 14
years. We observe that the HMM integrated model has improved prediction
accuracy as compared to the corresponding MC integrated modelComment: 12 page
The TALP & I2R SMT Systems for IWSLT 2008
This paper gives a description of the statistical machine
translation (SMT) systems developed at the TALP Research
Center of the UPC (Universitat Polit`ecnica de Catalunya)
for our participation in the IWSLT’08 evaluation campaign.
We present Ngram-based (TALPtuples) and phrase-based
(TALPphrases) SMT systems. The paper explains the 2008
systems’ architecture and outlines translation schemes we
have used, mainly focusing on the new techniques that are
challenged to improve speech-to-speech translation quality.
The novelties we have introduced are: improved reordering
method, linear combination of translation and reordering
models and new technique dealing with punctuation marks
insertion for a phrase-based SMT system.
This year we focus on the Arabic-English, Chinese-Spanish and pivot Chinese-(English)-Spanish translation
tasks.Postprint (published version
Software implementation of an Attribute-Based Encryption scheme
A ciphertext-policy attribute-based encryption protocol uses bilinear pairings to provide
control access mechanisms, where the set of user\u27s attributes is specified by means of a linear secret sharing scheme. In this paper we present the design of a software cryptographic library that achieves record timings for the computation of a 126-bit security level attribute-based encryption scheme. We developed all the required auxiliary building blocks and compared the computational weight that each of them adds to the overall performance of this protocol.
In particular, our single pairing and multi-pairing implementations achieve state-of-the-art
time performance at the 126-bit security level
Reference Values of Three-Dimensional Proximal Femur Parameters from Bone Densitometry Images in Healthy Subjects from Argentina
Objective: New methodologies for the assessment of bone mass from by DXA have been developed in the last years. The threedimensional analysis of the proximal femur by (3D-DXA) allows the evaluation of cortical and trabecular bone separately and has shown a good correlation with computed tomography. We aimed to obtain reference values in a healthy population of both sexesin Argentina.Methods: Adults female and male subjects (n=992) from four cities from Argentina were included. BMD (g/cm2) was measured by DXA on the femoral neck and total hip. The 3D analysis was performed with 3D-Shaper software (v2.9, Galgo Medical, Spain).The cortical BMD (sDens - mg/cm2) and trabecular volumetric BMD (trab vBMD - mg/cm3) were consider. The distribution of the data was evaluated with the Shapiro-Wilk test and parametricor non-parametric tests were used as appropriate. Data were expressed as mean±SD and p<0.05 was considered significant.Results: 75.5% women (n=749) and 24.5% men (n=243) were included. The mean age was 54.8±16.8 y and BMI was 27.3±5.4 kg/m2. The data according to each decade and a comparison with a references group (decade 20-30) are shown in the following table (*indicates significant differences compared to decade 20-30).Conclusion: A significant decrease in trabecular vBMD from D40 was observed in women, while in men this decrease was observed later (D60). The cortical parameter sDens was observed decreasefrom D50 in women and in men, an increase in D40 and cortical bone maintenance according to age was found.Fil: Brance, M. L.. Reumatología y Enfermedades Óseas; ArgentinaFil: Saravi, Fernando Daniel. Escuela de Medicina Nuclear; ArgentinaFil: Henríquez, M. M.. Escuela de Medicina Nuclear; ArgentinaFil: Longobardi, V.. Instituto de Investigaciones Metabólicas; ArgentinaFil: Zanchetta, M. B.. Instituto de Investigaciones Metabólicas; ArgentinaFil: Larroudé, M. S.. Centro de Diagnostico Rossi; ArgentinaFil: Ulla, M. R.. Instituto Latinoamericano de Investigaciones Médicas; ArgentinaFil: Matos, F.. Instituto Latinoamericano de Investigaciones Médicas; ArgentinaFil: Salerni, H.. No especifíca;Fil: Oliveri, María Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Inmunología, Genética y Metabolismo. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Inmunología, Genética y Metabolismo; Argentina. Universidad de Buenos Aires. Facultad de Medicina. Hospital de Clínicas General San Martín; ArgentinaFil: Bonanno, Marina Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Inmunología, Genética y Metabolismo. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Inmunología, Genética y Metabolismo; Argentina. Universidad de Buenos Aires. Facultad de Medicina. Hospital de Clínicas General San Martín; ArgentinaFil: Meneses, N. L.. No especifíca;Fil: Di Gregorio, S.. Fundacion Cetir.; EspañaFil: Brum, L. R.. Universidad Nacional de Rosario; ArgentinaWorld Congress on Osteoporosis, Osteoarthritis and Musculoskeletal
DiseasesVirtualBélgicaInternational Osteoporosis FoundationEuropean Society for Clinical and Economic Aspects of Osteoporosis, Osteoarthritis and Musculoskeletal Disease
New Lidocaine-Based Pharmaceutical Cocrystals: Preparation, Characterization, and Influence of the Racemic vs. Enantiopure Coformer on the Physico-Chemical Properties
This study describes the preparation, characterization, and influence of the enantiopure vs. racemic coformer on the physico-chemical properties of a pharmaceutical cocrystal. For that purpose, two new 1:1 cocrystals, namely lidocaine:dl-menthol and lidocaine:d-menthol, were prepared. The menthol racemate-based cocrystal was evaluated by means of X-ray diffraction, infrared spectroscopy, Raman, thermal analysis, and solubility experiments. The results were exhaustively compared with the first menthol-based pharmaceutical cocrystal, i.e., lidocaine:l-menthol, discovered in our group 12 years ago. Furthermore, the stable lidocaine/dl-menthol phase diagram has been screened, thoroughly evaluated, and compared to the enantiopure phase diagram. Thus, it has been proven that the racemic vs. enantiopure coformer leads to increased solubility and improved dissolution of lidocaine due to the low stable form induced by menthol molecular disorder in the lidocaine:dl-menthol cocrystal. To date, the 1:1 lidocaine:dl-menthol cocrystal is the third menthol-based pharmaceutical cocrystal, after the 1:1 lidocaine:l-menthol and the 1:2 lopinavir:l-menthol cocrystals reported in 2010 and 2022, respectively. Overall, this study shows promising potential for designing new materials with both improved characteristics and functional properties in the fields of pharmaceutical sciences and crystal engineering
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