3,727 research outputs found
Research on the Relationship between Online Reviews and Customer Purchase Intention: The Moderating Role of Personality Trait
As an important factor that affects customer purchase intention, online review has attracted the attention from both enterprises and researchers. According to persuasion theory, planned behavior theory and regulatory focus theory, combined with the three dimensions of online reviews, we construct a modified model of the influence of online reviews on customer purchase intention, and put forward relevant theoretical assumptions. Based on data from 252 samples, this paper studies the relationship between online reviews and customer purchase intention, and further reveals the moderating effect of personality traits
Quasi-period outflows observed by the X-Ray Telescope onboard Hinode in the boundary of an active region
Persistent outflows have recently been detected at boundaries of some active
regions. Although these outflows are suggested to be possible sources of the
slow solar wind, the nature of these outflows is poorly understood. Through an
analysis of an image sequence obtained by the X-Ray Telescope onboard the
Hinode spacecraft, we found that quasi-period outflows are present in the
boundary of an active region. The flows are observed to occur intermittently,
often with a period of 5-10 minutes. The projected flow speed can reach more
than 200 km/s, while its distribution peaks around 50 km/s. This sporadic
high-speed outflow may play an important role in the mass loading process of
the slow solar wind. Our results may imply that the outflow of the slow solar
wind in the boundary of the active region is intermittent and quasi-periodic in
nature.Comment: 5 figures, accepted by RA
One-Shot Parameter Identification of the Thevenin's Model for Batteries: Methods and Validation
Parameter estimation is of foundational importance for various model-based
battery management tasks, including charging control, state-of-charge
estimation and aging assessment. However, it remains a challenging issue as the
existing methods generally depend on cumbersome and time-consuming procedures
to extract battery parameters from data. Departing from the literature, this
paper sets the unique aim of identifying all the parameters offline in a
one-shot procedure, including the resistance and capacitance parameters and the
parameters in the parameterized function mapping from the state-of-charge to
the open-circuit voltage. Considering the well-known Thevenin's battery model,
the study begins with the parameter identifiability analysis, showing that all
the parameters are locally identifiable. Then, it formulates the parameter
identification problem in a prediction-error-minimization framework. As the
non-convexity intrinsic to the problem may lead to physically meaningless
estimates, two methods are developed to overcome this issue. The first one is
to constrain the parameter search within a reasonable space by setting
parameter bounds, and the other adopts regularization of the cost function
using prior parameter guess. The proposed identifiability analysis and
identification methods are extensively validated through simulations and
experiments
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