8 research outputs found
Evaluating expert advice in forecasting: users' reactions to presumed vs. experienced credibility
YesIn expert knowledge elicitation (EKE) for forecasting, the perceived credibility of an expert is likely to affect the weighting attached to their advice. Four experiments have investigated the extent to which the implicit weighting depends on the advisor’s experienced (reflecting the accuracy of their past forecasts), or presumed (based on their status) credibility. Compared to a control group, advice from a source with a high experienced credibility received a greater weighting, but having a low level of experienced credibility did not reduce the weighting. In contrast, a high presumed credibility did not increase the weighting relative to a control group, while a low presumed credibility decreased it. When there were opportunities for the two types of credibility to interact, a high experienced credibility tended to eclipse the presumed credibility if the advisees were non-experts. However, when the advisees were professionals, both the presumed and experienced credibility of the advisor were influential in determining the weight attached to the advice
Analytical Treatment of the Oscillating Yukawa Potential
Using a suitable Laguerre basis set that ensures a tridiagonal matrix
representation of the reference Hamiltonian, we were able to evaluate in closed
form the matrix elements of the generalized Yukawa potential with complex
screening parameter. This enabled us to treat analytically both the cosine and
sine-like Yukawa potentials on equal footing and compute their bound states
spectrum as the eigenvalues of the associated analytical matrix representing
their Hamiltonians. Finally we used a carefully designed complex scaling method
to evaluate the resonance energies and compared our results satisfactorily with
those obtained in the literature.Comment: 8 pages 2 table
Obstacles to Online Shopping: Impact of Gender and Internet Security Issues
In the latest technology era, the widespread usage of internet enabled individuals to interact continuously and led to altered buying behavior patterns. Literature focuses on the critical effects in the field. Among many antecedents to online shopping, previous studies point out two important obstacles: (i) acceptance and tendency to use technology in accordance with gender perceptions and (ii) internet security problems. This study analyzes the impact of these two prominent factors on e-commerce utilization by studying the effects of these factors through primary and secondary data; a survey designed specifically for this analysis and the cross-country data from Eurostat. The findings show that while internet security problems significantly impact online shopping behavior, the evidence is mixed for the impact of gender. The results of this paper provide insights for a successful e-commerce transaction and identify important obstacles to be avoided for an efficient e-commerce system