With louder and louder weapon systems being developed and military personnel being exposed to steady noise levels approaching and sometimes exceeding 150 dB, a growing interest in greater amounts of hearing protection is evident. When the need for communications is included in the equation, the situation is even more extreme. New initiatives are underway to design improved hearing protection, i...

Without incorporation of weak-shock theory, the lossless Burgers equation predicts a multivalued waveform for nonlinear propagation beyond a certain distance. Inclusion of thermoviscous attenuation, which increases quadratically with frequency, prevents the occurrence of multivalued waveforms. The same is true for any attenuation law that is proportional to frequency raised to an exponent great...

We analyzed the role that jailhouse informants have played in DNA exoneration cases. Thus, for first 375 cases compiled by Innocence Project (IP), we reviewed IP information relevant to informant testimony. supplemented from with National Registry of Exonerations (NRE) and Convicting Innocent (CTI) databases. found 15% these included In 13% cases, only evidence supporting a conviction was word ...

There has been much research on codes over Z 4 , sometimes called quaternary codes, for over a decade. Yet, no database is available for best known quaternary codes. This work introduces a new database for quaternary codes. It also presents a new search algorithm called genetic code search (GCS), as well as new quaternary codes obtained by existing and new search methods.

There has been much research on codes over Z4, sometimes called quaternary codes, for over a decade. Yet, no database is available for best known quaternary codes. This work introduces a new database for quaternary codes. It also presents a new search algorithm called genetic code search (GCS), as well as new quaternary codes obtained by existing and new search methods.