In many real life problems, the parameters used to characterize the uncertainty or vagueness or impreciseness in information are either triangular or trapezoidal fuzzy numbers. But it is not always possible to restrict the membership function to either triangular or trapezoidal form. In this paper, a new form of non-normal fuzzy number named as Heptagonal fuzzy number is introduced and its arit...

HIGHLIGHTS We use a simple gambles design in an fMRI study to compare two conditions: ambiguity and conflict.Participants were more conflict averse than ambiguity averse.Ambiguity aversion did not correlate with conflict aversion.Activation in the medial prefrontal cortex correlated with ambiguity level and ambiguity aversion.Activation in the ventral striatum correlated with conflict level and...

Viewing intrusion detection as a problem of plan recognition presents unique problems. Real world security domains are highly ambiguous and this creates significant problems for plan recognition. This paper distinguishes three sources of ambiguity: action ambiguity, syntactic ambiguity and attachment ambiguity. Previous work in plan recognition has often conflated these different sources of amb...

An efficient approach to recognize the parameter of weighted-type fractional Fourier transform signals based on higher-order cumulant is proposed. Due index additivity transform, statistical features different weighted domains could be jointly considered, overcome problem ambiguity arising from existing estimation methods cumulant. This method can improve ability blind signal recognition no mat...

Background: Unethical behavior among nurses is gradually becoming a serious problem in the health sector of Nigeria and this call for urgent concern. However, it may be associated with issues inside health care organizations. This therefore prompted this study to investigate the relationship between role ambiguity, organizational justice and unethical behavior among nurses. Methods: The study ...

BACKGROUND Tolerance of ambiguity, or the extent to which ambiguous situations are perceived as desirable, is an important component of the attitudes and behaviors of medical students. However, few studies have compared this trait across the years of medical school. General practitioners are considered to have a higher ambiguity tolerance than specialists. We compared ambiguity tolerance betwee...