Weighing Water

Dynamic Weighing

In fabricating flowmeters, the meter's calibration is its final and accuracy determining step that comprises a great time consumption relative to its completion from its single component parts. Thus calibration (unless the respective time of calibration for a flow meter is not minimized) may represent a relevant contribution to fabrication costs. High-accuracy liquid flow calibration facilities...

On circulant weighing matrices

Algebraic techniques are employed to obtain necessary conditions for the existence of certain circulant weighing matrices. As an application we rule out the existence of many circulant weighing matrices. We study orders n = 8 +8+1, for 10 ~ 8 ~ 25. These orders correspond to the number of points in a projective plane of order 8.

Weighing the Universe.

Weighing reward and punishment.

www.sciencemag.org SCIENCE VOL 326 18 DECEMBER 2009 1581 COVER Ardipithecus ramidus, a possible human ancestor, inhabited then-wooded regions of Ethiopia 4.4 million years ago. This year, studies of the fossilized skeleton of a member of the species raised surprising questions about how key human traits evolved. See the Breakthrough of the Year special section beginning on page 1598 and at www....

Weighing the Scales:

Political science provides two very different takes on how the information revolution affects the relationship between governments and global civil society. The more popular and prominent argument is that the Internet dramatically lowers the costs of networked communication; therefore, civil society groups are better able to mobilize action to influence governments. Countless numbers of article...