324 research outputs found
A System for Scoring Proverb Interpretations Provided by Non-Brain-Damaged and Aphasic Adults
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Athermal annealing of Si-implanted GaAs and InP
GaAs and InP crystals ion implanted with Si were athermally annealed by exposing each crystal at
a spot of ~2 mm diameter to a high-intensity 1.06 μm wavelength pulsed laser radiation with ~4
J pulse energy for 35 ns in a vacuum chamber. As a result a crater is formed at the irradiated spot.
The crater is surrounded by a dark-colored ring-shaped region which is annealed by mechanical
energy generated by rapidly expanding hot plasma that formed on the exposed spot. The electrical
characteristics of this annealed region are comparable to those of a halogen-lamp annealed sample.
No redistribution of impurities due to transient diffusion is observed in the implant tail region. In
x-ray diffraction measurements, a high angle side satellite peak due to lattice strain was observed in
the crater and near crater regions of the athermally annealed sample in addition to the main Bragg
peak that corresponds to the pristine sample. This high angle side satellite peak is not observed in
regions away from the crater (≥5 mm from the center of the crater in GaAs)
Reliability Of Benefit Value Transfers From Contingent Valuation Data With Forest-Specific Attributes
The Organic Food Premium: A Local Assessment in the UK
The present study combines stated and revealed preferences in order to estimate the hypothetical bias of a sample of organic food consumers from Canterbury in the UK. It uses contingent valuation and hedonic pricing to compare stated and revealed preferences and employs the Almost Ideal Demand System to estimate the elasticity of organic products. The results show that the average price premium is fairly large (approximately 10%). They also demonstrate, crucially, that the size of this estimate is encouragingly similar whether a willingness-to-pay or hedonic pricing method is used. The estimated elasticity of organic products is on average above one, suggesting an elastic response to pricing policy in the present sample. Desirable next steps and potential policy applications for future research are also discussed
Effects of training multiple form classes on acquisition, generalization and maintenance of word retrieval in a single subject
Tropical carbon sink accelerated by symbiotic dinitrogen fixation
A major uncertainty in the land carbon cycle is whether symbiotic nitrogen fixation acts to enhance the tropical forest carbon sink. Nitrogen-fixing trees can supply vital quantities of the growth-limiting nutrient nitrogen, but the extent to which the resulting carbon–nitrogen feedback safeguards ecosystem carbon sequestration remains unclear. We combine (i) field observations from 112 plots spanning 300 years of succession in Panamanian tropical forests, and (ii) a new model that resolves nitrogen and light competition at the scale of individual trees. Fixation doubled carbon accumulation in early succession and enhanced total carbon in mature forests by ~10% (~12MgC ha−1) through two mechanisms: (i) a direct fixation effect on tree growth, and (ii) an indirect effect on the successional sequence of non-fixing trees. We estimate that including nitrogen-fixing trees in Neotropical reforestation projects could safeguard the sequestration of 6.7 Gt CO2 over the next 20 years. Our results highlight the connection between functional diversity of plant communities and the critical ecosystem service of carbon sequestration for mitigating climate change
Lexical Retrieval Behaviors of Subjects With Aphasia and Subjects Without Brain Damage on a Rebus Riddle Task
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Neuropsychological outcome in children with optic pathway tumours when first-line treatment is chemotherapy
Exploring the role of values and norms towards consumers’ intentions to patronize retail apparel brands engaged in corporate social responsibility (CSR)
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