Telephone Investigations

Internet- versus Telephone-based Local Outbreak Investigations

We compared 5 locally conducted, Internet-based outbreak investigations with 5 telephone-based investigations. Internet-based surveys required less completion time, and response rates were similar for both investigation methods. Participant satisfaction with Internet-based surveys was high.

Mandarin telephone speech recognition for automatic telephone number directory service

This paper discusses an HMM-based Mandarin telephone speech recognition method for implementing a prototype system of automatic telephone number directory service. It adopted the GPD/MCE training algorithm to train the HMM models for 100 final-dependent syllable initials and 40 syllable finals. The SBR method was used to compensate the speaker and channel effects. Besides, an RNN-based pre-clas...

Mobile telephone study underway.

Epidemiologists at the University of Leeds in the United Kingdom will study victims of brain tumors over the next 3 years to determine if the use of mobile phones has contributed to the victims cancers. At the same time, the researchers will study the use of mobile phones by an equal number of people without cancer. Epidemiologist Tricia McKinney, PhD, who will lead the study said, “The causes ...

On A Telephone Problem

Answer. Let f(n) be the minimum number of calls needed for n people. It is easily shown that f(1) = 0, f(2) = 1, f(3) = 3 and f(4) = 4. For n > 4, 2n− 4 calls are sufficient according to the following procedure: one of four “chief” gossips first calls each of the remaining n− 4 gossips, then the four learn each other’s (and hence everyone’s) information in 4 calls (as f(4) = 4), and finally one...

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