Thesis (M.S.) -- Worcester Polytechnic Institute. / Keywords: speech intelligibility; voice alarm communication system; common intelligibility scale (CIS); speech transmission index (STI). Includes bibliographical references (p. 80-82).

Thesis (M.A.) -- University of Tennessee, Knoxville, 2006. / Title from title page screen (viewed on Sept. 20, 2006). Thesis advisor: Todd M. Freeberg. Vita. Includes bibliographical references.

I examined the effect of the conspecific mobbing call of the Red-backed Shrike (Lanius collurio) on nest defence against arial predator (kestrel). I used a playback experiment in the presence of a dummy of kestrel (Falco tinnunculus) in two variants either with nature look or with adjusted key features (pigeon beak, claws and eyes), and pigeon (Columba palumbus) as a control. Shrikes were attracted by the mobbing call and arrived to their nests faster. Only the modified kestrel was attacked more likely in the presence of the playback, that suggests possible function of the mobbing call as a cue for social learning of predator recognition.

An effective alarm system is a critical part of many different types of jobs. It is also important that the alarm signal can capture human attention and convey appropriate urgency. In the current study the effect of siren sounds with or without unexpected, deviant sounds represented by a change of speed (a temporal deviant) were tested to evaluate if such change could successfully capture attention. The results showed that distraction was more pronounced when the deviant within the sound was a change from fast to slow as compared with slow to fast. Therefore, an alarm signal using a temporal deviant – changing from fast to slow—can be effective in capturing human attention and might be factored into the design of alarm systems.

Master’s Thesis is consider to security system design. In this Theses is described methodology of proposal of electronic security alarm according to valid standards and rules. In terms of standard and specification is created way of computerization of this design. Consequently, this procedure is software implemented. Results of algorithmic design are reviewed on hypothetic object.

This diploma thesis deals with a design of a burglar alarm control panel, equipped with an Ethernet interface. The thesis contains a discusson of present solutions of control panels and of present usage of Ethernet communication. An idea of sensors, directly connected to LAN, was discarded on basis of a component price survey. Finally, a new concept of the panel has been chosen. This concept allows a free definition of internal logic using a C-like scripting and provides a possibility to create a network of these panels in a LAN network, using a software-only supervising main control panel. A new control panel following this concept was designed and succesfully tested.

Infant apnea is a widespread condition in which infants fail to effectively breathe, and can lead to death. Clinical solutions exist for continuous monitoring of respirations in a hospital setting and requiring constant skin contact. This thesis investigates the construction of a proof of concept device that performs in-home monitoring without skin contact and with commonly available off-the-shelf components. The device constructed used a directional microphone to detect breathing sounds, an omnidirectional microphone to detect ambient noise as a baseline to help isolate the breathing sounds, and LabVIEW software deployed on an inexpensive laptop computer to quantify incidents of apparent lapses in breathing meeting the clinical definition of apnea. Testing results indicate that these components are effective in capturing these events in pre-term infants as well as adults, which provides promising evidence that a low-cost system could be manufactured for home detection to assist in infant monitoring.

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