We derive standards for acceptable measurement error when inferring treatment effects from sample means. The standards arise from the amount of measurement accuracy required for sample means to beat a näıve benchmark estimator that randomizes the direction and magnitude of treatment effects. We show that at sample and effect sizes common to many areas of psychology, particularly in human subjec...

measuring field gravity in sea due to the accelerations introduced via waves and movements to the gravity measuring systems has a low accuracy since according to einstein's equalent principle, gravimeter isn't able to separate the gravity acceleration from another acceleration. ship borne gravimetery observations by means of like oscillations and accelerations of the ship motion, and ...

weirs have widely been used for the flow measurement, flow diversion and its control in the open channels. attempts have been made to study flow over different shapes of normal weirs, side weirs and oblique weirs. this paper is connected with the development of the discharge coefficient measurement. in the present study four different weirs in different height are considered for validation purp...