374 research outputs found
Modelo organizacional de autogestão para projetos sociais: uma ação de design
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção
I principi epistemologici della botanica di Guy de La Brosse
No full textThis paper investigates some core aspects of Guy de La Brosse’s (1586-1641) botanical work. In the first section, the focus is on the epistemological principles of La Brosse’s botany by analyzing the first and second book of the treatise De la nature, vertu et utilité des plantes (1628). In the second section, the author discusses the role of Paracelsus’s chemistry in La Brosse’s work, with a particular attention to the third book of the De la nature. The final section deals with La Brosse’s interest in the visualization of plants. Here, the author provides the transcription and first Italian translation of a short manuscript related to Abraham Bosse’s engravings for La Brosse’s unfinished book Icones posthumae
Sistema de integração do conecimento organizacional pelo design thinker
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-graduação em Engenharia e Gestão do Conhecimento, Florianópolis, 2011Após a aplicação do Modelo Organizacional de Autogestão, desenvolvido para organizar administrativa e produtivamente grupos que desejassem promover a autogestão (FORNASIER, 2005), verificou-se a dificuldade para incorporá-la, ocasionada principalmente pela forma de constituição do grupo, pela falta de aprendizagem dos integrantes para formar uma organização e para assumir a autogestão o que resultou na fragmentação do grupo quando do afastamento da academia. Diante disto, o objetivo desta tese é desenvolver um Sistema de Integração do Conhecimento para ser utilizado por organizações colaborativas que desejam promover o perfil de agente de aprendizagem nos seus gestores. O sistema será realizado a partir da pesquisa do Conhecimento Organizacional preestabelecido, das organizações colaborativas referenciais da vitivinicultura, ao ser inserida a inovação, a qual o gestor deve prover a aprendizagem e a integração do conhecimento. Tem-se como premissa da pesquisa analisar quais são: os repositórios de conhecimento dessas organizações; como estes inserem a inovação na organização, da qual origina o Conhecimento Organizacional Distribuído; de que maneira ocorre a integração do conhecimento nos grupos. A pesquisa está fundamentada na metodologia de natureza descritiva e seu delineamento apoia-se em pesquisa bibliográfica, que estuda primeiramente a relação das Teorias de Aprendizagem com a Aprendizagem Organizacional e desta com a Gestão do Conhecimento, de McElroy (2003). Coloca-se, em paralelo a última, o pensamento do designer de Jones (1978), justificado pelo estudo do sistema de conhecimento pessoal do design thinker de Martin (2009). Utiliza-se a metodologia etnográfica pela abordagem mista de Milies e Huberman (1994), para a realização da pesquisa de campo, que tem na sua essência a fusão da etnografia e da teoria enraizada, reforçando o perfil analítico e sintético do designer, como instrumento para aplicação dos procedimentos gerais da pesquisa de campo. Tem-se como resultado da tese o desenvolvimento de um Sistema de Integração do Conhecimento, baseado na observação dos conhecimentos, habilidades e atitudes utilizados pelos gestores das organizações colaborativas referenciais, ao inserirem a inovação e integrá-la, relacionando-os com os conhecimentos, habilidades e atitudes dos gestores de design apresentadas por Brown (2009); Mozota (2003); Martin (2009) e Cross (2007)
Synthesis, Characterization and Supramolecular Properties of a Hydrophilic Porphyrin-β-Cyclodextrin Conjugate
No full textReductive amination of 6-deoxy-6-formyl-beta -cyclodextrin with 5-(p-aminophenyl)-10,15,20-tris(p-sulfonatophenyl)porphyrin in the presence of an excess of sodium cyanoborohydride affords the hydrophilic cyclodextrin-porphyrin conjugate 3 in 23% yield. The structure of 3 was confirmed by NMR spectroscopy and mass spectrometry techniques. Compound 3 showed a marked tendency to dimerize in aqueous conditions via the formation of intermolecular porphyrin-cyclodextrin inclusion complexes and/or through electrostatic interactions. Information on the structure of these aggregates has been obtained by the use of circular dichroism and UV-vis spectroscopy. Aggregation can be avoided by the use of heptakis(2,3,6-tri-O-methyl)-beta -cyclodextrin (TM beta CD) that forms a 1:1 inclusion complex with compound 3
An introduction to Total Variation for Image Analysis
No full textThese are the lecture notes of a course taught in Linz in Sept., 2009, at the school "summer school on sparsity", organized by Massimo Fornasier and Ronny Romlau. They address various theoretical and practical topics related to Total Variation-based image reconstruction. They focu first on some theoretical results on functions which minimize the total variation, and in a second part, describe a few standard and less standard algorithms to minimize the total variation in a finite-differences setting, with a series of applications from simple denoising to stereo, or deconvolution issues, and even more exotic uses like the minimization of minimal partition problems
Heart Rate Recovery And Its Determinants In Young Athletes
No full textAbstract: Heart rate recovery (HRR) is the reduction of heart rate immediately after exercise, and it’s the consequence of vagal reactivation and sympathetic withdrawal that normally occur in this phase. HRR is also considered a valid index of training level and cardiovascular system health. A recent study (Singh, MSSE, 2008) demonstrates an association of attenuated 1-min HRR with higher BMI in a children population, suggesting a possible link between healthy body weight and faster HRR. However, this hypothesis is not supported by data about HRR values in healthy young
athletes. PURPOSE: Our aim was to evaluate HRR in young athletes (age range 10 - 20 yr) and to analyze the relationships between HRR and other parameters, such as age, gender, BMI, heart rate at rest, maximal heart rate and workload achieved, sports practice. We also evaluated the
effect of two different post-exercise protocols on HRR.
METHODS: 1000 persons (606 male, 394 female) gave their informed consent to participate in the study. Each athlete completed a questionnaire and a maximal treadmill test using a ramp protocol. Heart rate was monitored before, during, and after the exercise, until the third minute of the
recovery phase. Athletes were divided into two groups characterised by a different recovery modality (supine position right after exercise vs supine position after measuring blood pressure in standing position).
RESULTS: The plot of HRR values yielded a sigmoidal curve showing a larger recovery between 30 and 90 seconds. An early supine position significantly increased HRR in the first minute (43,0 ±15,6 vs 52,6±16,0 bpm, p<0,001), while no differences were present after the second minute. Mean HRR was faster among male and younger athletes, while HRR and BMI appeared weakly related.
CONCLUSION: Our data are at variance, but complete Singh’s data, confirming the hypothesis that a higher BMI is related to a reduced HRR only when it’s expression of overweight due to excess of fat mass and lower fitness level. Further, HRR values are significantly different depending on the position in the recovery post-exercise. As suggested by the American Heart Association, we recommend placing instantly patients in supine position after treadmill test in order to obtain the maximal heart rate recovery and standardize this parameter
Bicontinuous cubic liquid crystalline phase nanoparticles stabilized by softwood hemicellulose
No full textThe colloidal stability of lipid based cubosomes, aqueous dispersion of inverse bicontinuous cubic phase, can be significantly increased by a stabilizer. The most commonly used stabilizers are non-ionic tri-block copolymers, poloxamers, which adsorb at the lipid-water interface and hence sterically stabilize the dispersion. One of the challenges with these synthetic polymers is the effect on the internal structure of the cubosomes and the potential toxicity when these nanoparticles are applied as nanomedicine platforms. The natural polysaccharide, softwood hemicellulose, has been proved to be an excellent stabilizer for oil-in-water emulsions, partially due to the presence of hydrophobic lignin in the extract which to some extent is associated to hemicellulose. Herein, we reported for the first time cubosomes stabilized by two types of softwood hemicelluloses, where one is extracted through thermomechanical pulping (TMP, low lignin content) and the other obtained from sodium-based sulfite liquor (SSL, high lignin content). The effect of the two hemicellulose samples on the colloidal stability and structure of monoolein-based cubosomes have been investigated via DLS, SAXS, AFM and cryo-TEM. The data obtained suggest that both types of the hemicelluloses stabilize monoolein (GMO) based cubosomes in water without significantly affecting their size, morphology and inner structure. SSL-extracted hemicellulose yields the most stable cubosomes, likely due to the higher content of lignin in comparison to TMP-stabilized ones. In addition, the stability of these particles was tested under physiological conditions relevant to possible application as drug carriers
Short term effects of bioenergy by-products on soil C and N mineralization and biochemical properties
No full textBioenergy by-products largely vary in their composition and properties and they can impact soil fertility in different and unpredictable ways. We studied the effects of the application rate of bioenergy residues with contrasting properties on C and N mineralization, element availability and biochemical properties. Results underlined that the process from which the by-products originated had a great effect in determining the agronomical properties of the residues. In particular, sorghum whole stillage from bioethanol production increased biological fertility, but caused N immobilization, manure whole stillage from bioethanol production greatly increased P availability, while manure anaerobic digestate supplied significant amounts of N. A direct relationship was found between rate of application of byproducts and N and P availability. Our study indicated that the reliability of the agronomical utilization
of bioenergy by-products requires a thorough evaluation of their impact on soil fertilit
Synthesis and physico-chemical characterization of folate-cyclodextrin bioconjugate for active drug delivery
No full text- …
