10,361 research outputs found
Systematic innovation and the underlying principles behind TRIZ and TOC
Innovative developments in the design of product and manufacturing systems are often marked by simplicity, at least in retrospect, that has previously been shrouded by restrictive mental models or limited knowledge transfer. These innovative developments are often associated with the breaking of long established trade-off compromises, as in the paradigm shift associated with JIT & TQM, or the resolution of design contradictions, as in the case of the dual cyclone vacuum cleaner. The rate of change in technology and the commercial environment suggests the opportunity for innovative developments is accelerating, but what systematic support is there to guide this innovation process. This paper brings together two parallel, but independent theories on inventive problem solving; one in mechanical engineering, namely the Russian Theory of Inventive Problem Solving (TRIZ) and the other originating in manufacturing management as the Theory of Constraints (TOC). The term systematic innovation is used to describe the use of common underlying principles within these two approaches. The paper focuses on the significance of trade-off contradictions to innovation in these two fields and explores their relationship with manufacturing strategy development
Anotação de genes relacionados à tolerância a seca em arroz (Oryza sativa) de terras altas.
O objetivo deste trabalho foi identificar e anotar os genes expressos em resposta ao déficit hídrico em tecido foliar de duas cultivares brasileiras de arroz de terras altas, a cultivar tolerante à seca Douradão e a cultivar sensível Primavera.Apresentação oral - Pós-graduação
Correlação entre os métodos Mehlich 1, Melich 3 e resina para análise de P e K em solos dos tabuleiros Csoterios.
A pesquisa apresenta os resultados da comparação entre o Mehlich-3 (M3) e a resina com o Mehlich-1 (M1) em solos dos tabuleiros costeiros.bitstream/CPATC/20018/1/bp_33.pd
Desempenho produtivo de populações segregantes de copas de pereira (Pyrus spp.) nas safras 2012-13 e 2013-14.
O objetivo do trabalho foi avaliar a fenologia e a produção de híbridos de copas, obtidos pelo programa de melhoramento genético de pereira da Embrapa Uva e Vinho, estabelecidos na Estação Experimental de Fruticultura de Clima Temperado, em Vacaria, RS
Zinc abundances in Galactic bulge field red giants: implications for DLA systems
Zinc in stars is an important reference element because it is a proxy to Fe
in studies of damped Lyman-alpha systems, permitting a comparison of chemical
evolution histories of bulge stellar populations and DLAs. In terms of
nucleosynthesis, it behaves as an alpha element because it is enhanced in
metal-poor stars. The aim of this work is to derive the iron-peak element Zn
abundances in 56 bulge giants from high resolution spectra. These results are
compared with data from other bulge samples, as well as from disk and halo
stars, and damped Lyman-alpha systems, in order to better understand the
chemical evolution in these environments. High-resolution spectra were obtained
using FLAMES+UVES on the Very Large Telescope. We find [Zn/Fe]=+0.24+-0.02 in
the range -1.3 < [Fe/H] < -0.5 and [Zn/Fe]=+0.06+-0.02 in the range -0.5 <
[Fe/H] -0.1, it shows a spread of -0.60 < [Zn/Fe]
< +0.15, with most of these stars having low [Zn/Fe]<0.0. These low zinc
abundances at the high metallicity end of the bulge define a decreasing trend
in [Zn/Fe] with increasing metallicities. A comparison with Zn abundances in
DLA systems is presented, where a dust-depletion correction was applied for
both Zn and Fe. Finally, we present a chemical evolution model of Zn enrichment
in massive spheroids, representing a typical classical bulge.Comment: Accepted in Astronomy & Astrophysics, in press Date of acceptance:
13/05/2015. 19 pages, 14 Figs in Astronomy & Astrophysics, 201
Avaliação de genótipos de arroz de sequeiro para tolerância à deficiência hídrica.
O objetivo deste trabalho foi comparar a produtividade de três genótipos de arroz de sequeiro, submetidos a três condições de deficiência hídrica: 30 %, 50 % e 70 % do fornecimento de água dado ao tratamento controle (tratamento sem restrição de água)
Análise do transcriptoma de arroz (Oryza sativa) cultivado sob déficit hídrico.
Neste trabalho analisamos a expressão dos genes relacionados à resposta ao déficit hídrido em tecido foliar de duas cultivares brasileiras de arroz de terras altas, a cultivar tolerante Douradão e a cultivar sensível BRS Primavera. Pela análise de RNA-seq foram identificados em Douradão 27.618 transcritos, sendo 24.090 (87,2%) homólogos ao banco de dados de arroz, enquanto que para BRS Primavera dos 27.221 transcritos 23.663 (86,9%) apresentaram homologia no banco de dados
Critical Hysteresis from Random Anisotropy
Critical hysteresis in ferromagnets is investigated through a -component
spin model with random anisotropies, more prevalent experimentally than the
random fields used in most theoretical studies. Metastability, and the
tensorial nature of anisotropy, dictate its physics. Generically, random field
Ising criticality occurs, but other universality classes exist. In particular,
proximity to criticality may explain the discrepancy between
experiment and earlier theories. The uniaxial anisotropy constant, which can be
controlled in magnetostrictive materials by an applied stress, emerges as a
natural tuning parameter.Comment: four pages, revtex4; minor corrections in the text and typos
corrected (published version
Rural-urban migration in d-dimensional lattices
The rural-urban migration phenomenon is analyzed by using an agent-based
computational model. Agents are placed on lattices which dimensions varying
from d=2 up to d=7. The localization of the agents in the lattice define their
social neighborhood (rural or urban) not being related to their spatial
distribution. The effect of the dimension of lattice is studied by analyzing
the variation of the main parameters that characterizes the migratory process.
The dynamics displays strong effects even for around one million of sites, in
higher dimensions (d=6, 7).Comment: 9 pages, 7 figures, to be published in International Journal of
Modern Physics C 1
Avaliação do crescimento in vitro de brotos de abacaxi ornamental (Anonas lucidus Miller) em meio de cultura bifásico.
Este estudo foi realizado no Laboratorio de Cultura de Tecidos de Plantas da Embrapa Agroindustria Tropical , em Fortaleza,CE, e teve como objetivo avaliar o crescimento de brotos de abacaxi ornamental (Ananas lucidus Miller) em meio de cultura bifasico.bitstream/CNPAT-2010/5394/1/Pa-059.pd
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