312 research outputs found
Derived crop coefficients for winter wheat using different reference evpotranspiration estimates methods
This paper reports the results of using three empirical methods (Makkink, Priestley-Taylor and Hargreaves) for estimating the reference evapotranspiration (ET0) in the semi-arid region of Tensift Al Haouz, Marrakech (center of Morocco). The Penman-Monteith equation, standardized by the Food and Agriculture Organization (FAO-PM), is used to evaluate the three empirical methods. The obtained ET0 data were used to estimate crop water requirement (ET) of winter wheat using the crop coefficient (K-c) approach and results were compared with ET measured by the Eddy Covariance technique. The result showed that using the original empirical coefficients a, alpha and C-m in Hargreaves, Priestley-Taylor and Makkink equations, respectively, the Hargreaves method agreed fairly well with FAO-PM method at the test site. Conversely, the Priestley-Taylor and Makkink methods underestimate the ET by about 20 and 18 %. After adjustment of the original values of two parameters alpha and C-m coefficients in Priestley-Taylor and Makkink equations, the underestimation of ET was reduced to 9% and 4% for the Priestley Taylor and Makkink methods, respectively, which led to an improvement of 55% and 76% of the obtained values compared with the original values
Firm quality or market sentiment : what matters more for IPO investors?
This paper investigates the investment decisions of IPO investors when equipped with information on both the quality of the firm and the market sentiment. Unique regulatory provisions allow IPO investors in India to have access to the independent assessment of firm quality and information on the participation of other investors, including institutional investors. At the same time, an active grey market reveals market sentiment before the application for subscription is closed. The results, which are robust to alternative model specifications, suggest that the institutional investors' decision is guided almost exclusively by firm quality while the retail investors' decision to participate in IPOs is strongly influenced by market sentiment, even in a highly transparent market where both sets of information are freely available
Effects of Oxygen Vacancy Defect on Magnetic Properties of (Ca,Mn)O Doped System
We study the (Ca, Mn)O doped system with oxygen vacancy point defects in monoxide CaO material. Using density functional theory calculation based on a generalized gradient approximation, we show that such a defect can convert the ground state from a spin glass to a ferromagnetic phase. Then, we discuss the stability of the magnetism in the (Ca, Mn)O doped system. The ferromagnetic and the disordered local moment states are also investigated and a super-exchange mechanism is proposed to explain such ferromagnetic magnetic behaviours. Based on the mean field approximation used in the elaboration of the Heisenberg model, we estimate the Curie temperature
XingGAN for Person Image Generation
We propose a novel Generative Adversarial Network (XingGAN or CrossingGAN)
for person image generation tasks, i.e., translating the pose of a given person
to a desired one. The proposed Xing generator consists of two generation
branches that model the person's appearance and shape information,
respectively. Moreover, we propose two novel blocks to effectively transfer and
update the person's shape and appearance embeddings in a crossing way to
mutually improve each other, which has not been considered by any other
existing GAN-based image generation work. Extensive experiments on two
challenging datasets, i.e., Market-1501 and DeepFashion, demonstrate that the
proposed XingGAN advances the state-of-the-art performance both in terms of
objective quantitative scores and subjective visual realness. The source code
and trained models are available at https://github.com/Ha0Tang/XingGAN.Comment: Accepted to ECCV 2020, camera ready (16 pages) + supplementary (6
pages
Aripiprazole dose associations with metabolic adverse effect: Results from a longitudinal study.
Weight gain, blood lipids and/or glucose dysregulation can follow aripiprazole treatment onset. Whether aripiprazole dosage is associated with an increase in these metabolic parameters remains uncertain. The present study investigates aripiprazole dose associations with weight change, blood glucose, lipids, and blood pressure.
422 patients taking aripiprazole for a minimum of three weeks to one year were selected from PsyMetab and PsyClin cohorts. Associations between aripiprazole dose and metabolic outcomes were examined using linear mixed-effect models.
Aripiprazole dose was associated with weight change when considering its interaction with treatment duration (interaction term: -0.10, p < 0.001). This interaction resulted in greater weight gain for high versus low doses at the beginning of the treatment, this result being overturned at approximately five months, with greater weight increase for low versus high doses thereafter. LDL and HDL cholesterol levels were associated with aripiprazole dose over five months independently of treatment duration, with an average of 0.06 and 0.02 mmol/l increase for each 5 mg increment, respectively (p = 0.033 and p = 0.016, respectively). Furthermore, mean dose increases were associated with greater odds (+30 % per 5 mg increase) of clinically relevant weight gain (i.e., ≥7 %) over one year (p = 0.025).
Aripiprazole dose was associated with one-year weight changes when considering its interaction with treatment duration. Increasing its dose could lead to metabolic worsening over the first five months of treatment, during which minimum effective doses should be particularly preferred
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