among the causes of headache, cerebral venous and/or dural sinus thrombosis (cvt) is an important challenge because of its variable clinical presentation, having negative brain ct in up to 30% of cases and unavailability of mri in some situations. on the other hand as d-dimer (dd) test has been reported to be a sensitive test for the exclusion of venous thromboembolism, we sought whether it cou...

to survive in today’s competitive environment, companies need continues improvement to achieve goals such as increasing the accuracy of targeting, improving product or service. however, there is no improvement guaranty without performance evaluation. an organization must assess current performance before embarking on any improvement. if it does not, it will have no baseline from which to determ...

In a weak measurement with postselection, a measurement value, called the weak value, can be amplified beyond the eigenvalues of an observable. However, there are some controversies whether weak-value amplification is practically useful in increasing the sensitivity of the measurement, in which fundamental quantum noise dominates. In this paper, we investigate the sensitivity limit of an optica...

Measurements do not result in an exact value of the measured quantity; even after the most accurate measurement , there is still some uncertainty about the actual value of the measured quantity. Traditionally, in science and engineering, this uncertainty is characterized by a probability distribution; however, often, we do not know this probability distribution exactly. So, to get a more adequa...

Overview Experimentation involves the observation and measurement of a physical property or a characteristic of something. A fundamental rule of scientific measurement states that it is never possible to exactly measure the true value of any characteristic, only approximations of the true value. For this reason, it is the responsibility of the engineers and scientists to report all measured val...

In a weak measurement with post-selection, a measurement value, called the weak value, can be amplified beyond the eigenvalues of the observable. However, there are some controversies whether the weak value amplification is practically useful or not in increasing sensitivity of the measurement in which fundamental quantum noise dominates. In this paper, we investigate the sensitivity limit of a...