Reversibility Pattern
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. ON THE ROLE OF SWITCHING COSTS AND DECISION REVERSIBILITY IN INFORMATION TECHNOLOGY ADOPTION AND INVESTMENT
ABSTRACT Managerial decisions on the adoption of innovative technologies by a firm are made under conditions of uncertainty and must account for network externalities that imply the benefit of a technology is received not only from its intrinsic payoff, but also from the size of the network of other adopters. The theoretical model presented in this study dem
JISTEM J.Inf.Syst. Technol. Manag.. Publicado em: 2017-12
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2. Explorando a noção de reversibilidade parcial de autômatos celulares elementares em reticulados cíclicos
Os autômatos celulares têm sido estudados como modelos computacionais de diversas formas. Diversas de suas propriedades têm sido amplamente exploradas, entre elas destacando-se a reversibilidade. Esta propriedade é capaz de fornecer a um autômato celular a possibilidade de ter sua evolução temporal refeita para trás no tempo, independentemente de sua
Publicado em: 2010
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3. Transvaginal hydrolaparoscopy for evaluating surgical prognosis in sterilized women desiring a new pregnancy / Hidrolaparoscopia transvaginal no prognóstico cirúrgico de mulheres laqueadas candidatas à reversão da esterilização tubária
Background: The rate of post sterilization regret in women is about 2% to 26% de-pending on the moment of life they are living. Surgical reversibility can be carried out with the use of laparotomy, minilaparotomy or laparoscopy. However, tubal condi-tions must be assessed for the surgical prognosis. Hysterosalpingography is useful for assessing the proximal
Publicado em: 2007
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4. Changes in G+C content of a neutrally evolving gene under a non-reversible dynamics measured by computer simulations based on experimental evolution data
To evaluate the effects of non-reversibility on compositional base changes and the distribution of branch lengths along a phylogeny, we extended, by means of computer simulations, our previous sequential PCR in vitro evolution experiment. In that study a 18S rRNA gene evolved neutrally for 280 generations and a homogeneous non-stationary model of base substi
Genetics and Molecular Biology. Publicado em: 2004
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5. Subcellular Localization and Developmental Changes of Aspartate-α-Ketoglutarate Transaminase Isozymes in the Cotyledons of Cucumber Seedlings 1
The total activity of aspartate-α-ketoglutarate transaminase in the cotyledons of cucumber (Cucumis sativus L.) seeds increased 17-fold during the first 2 days of germination in darkness and then declined gradually to 20% of the peak activity after 10 days. Exposure of the seedlings to light at day 3 accelerated the decline. The enzyme in the cotyledon extr
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6. Effects of light fluence and wavelength on expression of the gene encoding cucumber hydroxypyruvate reductase.
We have investigated the regulation of cucumber (Cucumis sativus) hydroxypyruvate reductase mRNA abundance in response to white-, red-, and far-red-light treatments. Following irradiation of dark-adapted cucumber seedlings with 15 min to 4 h of either white or red light and return to darkness, the mRNA level for the gene encoding hydroxypyruvate reductase (H
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7. Physiological patterns in early morning asthma.
Sixteen asthmatic patients who regularly showed early morning falls in peak expiratory flow rate of more than 25% were studied at 06.00 hours and 14.00 hours. At 06.00 hours considerable deterioration in static lung volumes and airways resistance occurred which was typical of an attack of acute asthma. Blood gas analysis showed less variation, with mild hypo
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8. Epithelial Cell Apoptosis Causes Acute Lung Injury Masquerading as Emphysema
Theories of emphysema traditionally revolved around proteolytic destruction of extracellular matrix. Models have recently been developed that show airspace enlargement with the induction of pulmonary cell apoptosis. The purpose of this study was to determine the mechanism by which a model of epithelial cell apoptosis caused airspace enlargement. Mice were tr
American Thoracic Society.
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9. Engineering Cytoplasmic Male Sterility via the Chloroplast Genome by Expression of β-Ketothiolase1
While investigating expression of the polydroxybutyrate pathway in transgenic chloroplasts, we addressed the specific role of β-ketothiolase. Therefore, we expressed the phaA gene via the chloroplast genome. Prior attempts to express the phaA gene in transgenic plants were unsuccessful. We studied the effect of light regulation of the phaA gene using the ps
American Society of Plant Biologists.
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10. Plasticity and tuning of the time course of analog persistent firing in a neural integrator
In a companion paper, we reported that the goldfish oculomotor neural integrator could be trained to instability or leak by rotating the visual surround with a velocity proportional to +/- horizontal eye position, respectively. Here we analyze changes in the firing rate behavior of neurons in area I in the caudal brainstem, a central component of the oculomo
National Academy of Sciences.
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11. Pathophysiology and time course of silent myocardial ischaemia during mental stress: clinical, anatomical, and physiological correlates.
OBJECTIVE--To define the prevalence and pathophysiology of myocardial ischaemia induced by mental stress in patients with coronary artery disease and exercise inducible ischaemia, and to determine the correlation between the severity of coronary artery disease and ischaemia induced by speech. DESIGN--Prospective cohort study. SETTING--Tertiary care academic
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12. Infection of adult Syrian hamsters with flagellar variants of Campylobacter jejuni.
Two variants of Campylobacter jejuni IN1 differing in the expression of flagella, IN1 (Fla+ Mot+, wild type) and IN1-NM (Fla- Mot-), were tested for their ability to establish infection in adult hamsters. Animals were challenged intracecally with 2 X 10(9) to 5 X 10(10) CFU and monitored for evidence of infection. None of the challenged animals developed ill