Package betaper

Documentation for the R-package "betaper

A constraint manager to support virtual maintainability

Virtual prototyping tools have already captivated the industry's interest as viable design tool. One of the key challenges for the research community is to extend the capabilities of Virtual Reality technology beyond its current scope of ergonomics and design reviews. The research presented in this paper is part of a larger research programme that aims to perform maintainability assessment on virtual prototypes. This paper discusses the design and implementation of a geometric constraint manager that has been designed to support physical realism and interactive assembly and disassembly tasks within virtual environments. The key techniques employed by the constraint manager are direct interaction, automatic constraint recognition, constraint satisfaction and constrained motion. Various optimization techniques have been implemented to achieve real-time interaction with large industrial models

La extensión universitaria, una contribución al desarrollo local sostenible en Remedios, Cuba

This research about University extension, it is a contribution to local sustainable development in Remedios, Cuba, it was a reflection of what can be done by Higher Education in terms of University Extension, applying scientific knowledge in terms of local sustainable development in a territory or community; the work shows extensionist actions applying Science to contribute to the local development of a municipality, for this purpose, methods such as observation, interview, survey and the Participatory Action Research method were applied, and research carried out by students and teachers in the process of completing their studies, master's and doctoral theses, whose results were applied in practice, were used, the work addresses different extension actions as a result of research work of students in different careers that allowed the application of scientific knowledge and research results, with the support of science and innovation from teaching at the Municipal University Center from Remedios, thus contributing to the local and sustainable development of communities and its territory in general.  El trabajo La extensión universitaria, una contribución al desarrollo local sostenible en Remedios, Cuba, fue un reflejo de lo que puede realizar la Educación Superior en materia de Extensión Universitaria, aplicando el conocimiento científico en función del desarrollo local sostenible en un territorio o comunidad; el trabajo muestra acciones extensionistas aplicando la Ciencia para contribuir al desarrollo local de un municipio, para ello se aplicaron métodos como la observación, la entrevista, la encuesta y el método Investigación Acción Participativa; se utilizaron investigaciones realizadas por estudiantes y docentes en proceso de culminación de estudios, tesis de maestrías y doctorados cuyos resultados se aplicaron en la práctica, el trabajo aborda distintas acciones extensionistas como resultado de trabajos de investigación de los estudiantes en las distintas carreras que permitió aplicar los conocimientos científicos y resultados de investigaciones, con el apoyo de la ciencia y la innovación desde la docencia en el Centro Universitario Municipal de Remedios, pudiendo contribuir de esta forma al desarrollo local y sostenible de comunidades y territorio en general

La mujer en defensa de la mujer: voces femeninas del romanticismo cubano (Poesía y cuento)

Throughout history, women have played an important role in literature. Nevertheless, since Sappho\u27s poetry until now, feminine voices have had to struggle for recognition of their works. Before the nineteenth century, women were almost ignored in Spanish literature. Society kept them as ángeles de la familia, taking care of their homes, husbands, and children. Some of them, such as María de Zayas y Sotomayor in Spain and Sor Juana Inés de la Cruz in Mexico, complained about their situation in their writings. However, they expressed their fight not as a generation but as individuals. In the nineteenth century, the ideas and ideals of Romanticism, were brought to Latin America from Europe. Cuba was among those countries where the new movement took roots. Initiated by Gertrudis Gómez de Avellaneda, a group of women began to participate in literary reunions, and to found newspapers and magazines where works authored by women, dedicated to feminist ideas, were published. They indeed through literature started to live out womanhood in order to intellectually leave the ideological prisons where society had been keeping them. This study scans the literary works of all Romantic women writers in Cuba. It specifically analyzes poetry and short stories, and investigates how these authors expressed themselves in their works against the patriarchal society, where they lived and wrote their books. An eclectic critical method has been used. Findings were very revealing. Only three of the fourteen writers studied in my dissertation had been previously mentioned by major critics. Most of them had been ignored. However, the greatest discovery was that they prompted something new: For the first time they projected themselves as a group, as a collective consciousness, and this fact established a difference with former women writers in Cuban literature before Romanticism. In other words, they produced a Renaissance in Cuba\u27s literature. In spite of how they lived between 1820 and 1900, their struggles for women\u27s rights have linked them to our current times

Particle Nucleation Using Different Initiators in the Miniemulsion Polymerization of Styrene

In miniemulsion polymerization, droplets nucleation is the key factor to ensure the production of polymer particles with a desired composition. The influence of the initiation on droplets nucleation is even conflicting and it has not been completely considered. The result of employing different initiators systems on the nucleation mechanism and kinetics in the polymerization of stable styrene/polystyrene miniemulsions with varied droplets size is here discussed. The employed initiation systems provide all combinations between the phase (aqueous or organic) where initiation mainly occurs and the phase affinity of the produced radicals. Latexes with different contribution of the droplets nucleation were synthesized according to the employed initiation system and the droplets size of the miniemulsion. The results here presented could be used as a guide for choosing the initiation system to achieve the required contribution of the droplets nucleation.Fil: Ronco, Ludmila Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); ArgentinaFil: Minari, Roque Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); ArgentinaFil: Gugliotta, Luis Marcelino. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentin

A method to incorporate the effect of taxonomic uncertainty on multivariate analyses of ecological data

Researchers in ecology commonly use multivariate analyses (e.g. redundancy analysis, canonical correspondence analysis, Mantel correlation, multivariate analysis of variance) to interpret patterns in biological data and relate these patterns to environmental predictors. There has been, however, little recognition of the errors associated with biological data and the influence that these may have on predictions derived from ecological hypotheses. We present a permutational method that assesses the effects of taxonomic uncertainty on the multivariate analyses typically used in the analysis of ecological data. The procedure is based on iterative randomizations that randomly re-assign non identified species in each site to any of the other species found in the remaining sites. After each re-assignment of species identities, the multivariate method at stake is run and a parameter of interest is calculated. Consequently, one can estimate a range of plausible values for the parameter of interest under different scenarios of re-assigned species identities. We demonstrate the use of our approach in the calculation of two parameters with an example involving tropical tree species from western Amazonia: 1) the Mantel correlation between compositional similarity and environmental distances between pairs of sites, and; 2) the variance explained by environmental predictors in redundancy analysis (RDA). We also investigated the effects of increasing taxonomic uncertainty (i.e. number of unidentified species), and the taxonomic resolution at which morphospecies are determined (genus-resolution, family-resolution, or fully undetermined species) on the uncertainty range of these parameters. To achieve this, we performed simulations on a tree dataset from southern Mexico by randomly selecting a portion of the species contained in the dataset and classifying them as unidentified at each level of decreasing taxonomic resolution. An analysis of covariance showed that both taxonomic uncertainty and resolution significantly influence the uncertainty range of the resulting parameters. Increasing taxonomic uncertainty expands our uncertainty of the parameters estimated both in the Mantel test and RDA. The effects of increasing taxonomic resolution, however, are not as evident. The method presented in this study improves the traditional approaches to study compositional change in ecological communities by accounting for some of the uncertainty inherent to biological data. We hope that this approach can be routinely used to estimate any parameter of interest obtained from compositional data tables when faced with taxonomic uncertainty

Metagenomic insight into precipitation processes in microbial communities from salar de Atacama

The Salar de Atacama is one of the Earth’s largest evaporite basins (ca. 3,000 km2). Within this large area, numerous hypersaline lakes can be found. These lakes are hotspots for microbial diversity, and diverse structures with associated microorganisms have been reported, including microbial mats, microbialites and endoevaporites. In this work, we aim to identify functional differences in the microbiota from these systems, using as models a mat from Brava lake, a microbialite from Chaxas and an endoevaporite from Barros Negros. Metagenomic DNA was extracted from these samples, and sequenced with Illumina technology. The datasets generated allowed to characterize the microbial communities both taxonomically and functionally.The carbonate-rich mats and microbialites are dominated by Proteobacteria, and within this phylum the most abundant classes are Alphaproteobacteria and Gammaproteobacteria. Other important phyla include Bacteroidetes, Cyanobacteria, and Actinobacteria. In the endoevaporites, the phyla are more evenly distributed, being Proteobacteria, Bacteroidetes, and Euryarchaeota similarly abundant, with Cyanobacteria and Actinobacteria also present. At the family level, the mat is the most diverse and the endoevaporite is the least diverse. This is also observed at the function level, with more pathways annotated in Brava. However, the main functional roles present in the three communities are similar, with Cyanobacteria being the main primary producers, involved in photosynthesis and nitrogen fixing, Alphaproteobacteria involved in anoxygenic photosynthesis, and Deltaproteobacteria involved in sulfur cycling. This work starts the exploration of the microbial influence on the formation of different macrostructures harboring microbial ecosystems in extreme environments from the Central Andes region. Certain taxa present only in the more lithified communities, and with metabolic pathways promoting precipitation might be particularly involved in the lithification process.Fil: Marcelino, Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Saona Acuña, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Kurth, Daniel German. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaXVII Congreso Argentino de Microbiología GeneralLos CocosArgentinaSociedad Argentina de Microbiología Genera

Elaboración de un sistema contable agrícola - ganadera en la Estación Experimental Pastaza – Facultad de Ciencias Pecuarias de la Escuela Superior Politécnica de Chimborazo, parroquia Simón Bolívar, cantón Pastaza, provincia de Pastaza, KM 32 a vía Puyo – Macas, y su incidencia en el registro y control de la producción agropecuaria

El presente trabajo investigativo se enfoca en la elaboración de un sistema contable agrícola - ganadera en la Estación Experimental Pastaza – Facultad de Ciencias Pecuarias de la Escuela Superior Politécnica de Chimborazo, Parroquia Simón Bolívar, Cantón Pastaza, Provincia de Pastaza, Km 32 vía Puyo – Macas, y su incidencia en el registro y control de la producción agropecuaria, mediante la cual, para el desarrollo de la tesis se utilizó la investigación de tipo descriptiva, metodología no experimental, utilizando métodos como el inductivo, deductivo, analítico, sintético, y entre las técnicas utilizadas fueron la observación, entrevista, que permitió conocer información consiente a la producción agropecuaria que se realiza en la estación y ratificar la necesidad de elaborar un sistema contable agrícola – ganadera para que la administración cuente con una herramienta que le permita llevar un control de sus actividades que se realizan al interior de ella; y sobre todo para que pueda realizar una adecuada toma de decisiones con la información contable correctamente presentada.This research work focuses on the development of an agricultural-livestock accounting system at the experimental station of Pastaza, Faculty of Animal Sciences at the Polytechnic School of Chimborazo, Simon Bolivar parish, Pastaza canton and province, Km 32 on the road to Puyo - Macas, and its impact on the registration and control of agricultural production, in which, for the development of the thesis research it was used a descriptive non-experimental methodology, using methods such as inductive, deductive, analytic, synthetic, and the techniques used were observation, interview which allowed to know information on the agricultural production that takes place in the station and confirm the need of an agricultural and livestock accounting system count for management with a tool that allows control the activities carried out within it; and especially to make a proper decision making with financial information presented correctly

N,N-Dimethylacrylamide Hydrogels for Controlled Drug Delivery. Influence of Network Structure and Drug Solubility on the Load and Release Mechanisms

The aim of the present work was to synthesize sustained-release hydrogels based on N,N-dimethylacrylamide (DMA) to study the effect of the polymer matrix structure and the solubility of drugs on the load and release mechanisms. A series of cross-linked DMA hydrogels were synthesized with different monomer concentration and crosslinker to monomer ratio by free radical aqueous solution polymerization at 37ºC using N,N-methylen-bis-acrylamide as crosslinking agent. The effect of total monomer concentration and degree of crosslinking on the water absorption, glass transition temperature values, mechanical properties, and load/release of different drugs was studied. Main results showed that: a) the structure of the network, obtained by varying the monomer and crosslinking agent concentration, is a factor that governs the chemical and physical properties of the hydrogel (water absorption, glass transition temperature, storage and loss moduli, network parameters), b) the rate and amount of drug released from swellable hydrogels depend on both the degree of hydrogel crosslinking and the water solubility of the drug. In all cases, as the concentration of the crosslinker agent increased, the swelling capacity of the hydrogels was reduced and drugs with high solubility in water were more easily released, probably due to their greater affinity for the medium.Fil: Garcia, Valeria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: González, Verónica Doris Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Gugliotta, Luis Marcelino. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentin

Ordenanza de la Casa Galera de Valladolid

Ordenanza escrita en 16 Agosto 1796Publicaciones de la "Revista de la Escuela de Estudios Penitenciarios"Copia digital. España : Ministerio de Cultura y Deporte. Subdirección General de Coordinación Bibliotecaria, 202