In sampling theory, a wide variety of techniques is used to obtain efficient estimators for the population mean. The commonly used method to obtain the estimator for population mean is simple random sampling without replacement (SRSWOR) when there is no auxiliary variable available. There are methods that use the auxiliary information of the study characteristics. If there exists an auxiliary v...

The objective of this study is the development of auto-navigation system which supports activities of the visually impaired without help of others. This system navigates the subject by using information about three sensors(acceleration sensor, terestrial magnetism sensor and gyro sensor), DGPS(Di erential Global Positioning System), maps and a traÆc data base. In our navigation system, after in...

CIAT has the responsibility to coordinate the Systemwide Tropical Whitefly IPM Program (SPIPMTWFP), and its various sub-projects in the Americas (described as activities in this section of the annual report), Southeast Asia and subSaharan Africa. These projects are funded by different donors, namely: The United Kingdom Department for International Development (DFID); the United States (USAID) a...

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The problem of weakly correlated electrons on a square lattice is formulated in terms of one-loop renormalization group. Starting from the action for the entire Brillouin zone (and not with a low-energy effective action) we reduce successively the cutoff Λ about the Fermi surface and follow the renormalization of the coupling U as a function of three energy-momenta. We calculate the intrinsic s...

To the Editor—In an article recently published in the Journal, Lopez-Rojas et al [1] demonstrated that an in vitro mutant of Acinetobacter baumannii resistant to colistin had reduced in vivo fitness and decreased virulence, in terms of both mortality and survival, in a mouse model of peritoneal sepsis. They suggest that the lower in vivo bacterial fitness and decreased virulence of this mutant ...

Female orang-utans in a Sumatran swamp forest live in large, but stable, and widely overlapping home ranges. They preferentially associate with some of their female neighbours, possibly relatives, to form socially distinct clusters that also experience reproductive synchrony. Sexually mature males range more widely than females, but among them the dominant adult male has a relatively more limit...

Correction for 'High throughput first-principles calculations of bixbyite oxides for TCO applications' by Nasrin Sarmadian et al., Phys. Chem. Chem. Phys., 2014, 16, 17724-17733.