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Characteristics of the indoor propagation channel in 1.9 GHz band

100%

Kurek K. , Janusek D. , Kosiło T. , Modelski J.

2001

tom nr 4

56-59

This paper presents results of propagation measurement carried out in the frequency range 1.8-2.0 GHz inside a building, using network analyser. Wideband properties of the channel, described through mean delay and delay spread, and a narrowband local statistics of the received power have been presented. For each transmitter and receiver antennas location two propagation cases have been considered, line of sight (LOS) and obstructed line of sight (NLOS) - the direct path component was attenuated by radio absorbing mat near the receiver.

Optimal ECG lead system for arrhythmia assessment with use of TCRT parameter

75%

Kania M. , Fereniec M. , Janusek D. , Zbieć A. , Kępski R. , Karpiński G. , Maniewski R.

tom Vol. 29, no. 2

73-82

The aim of the study was to evaluate diagnostic value of TCRT (spatial QRS-T angle) parameter in different sets of ECG leads and to select the ECG lead set, for which the TCRT parameter would have the best sensitivity and specificity in identifying patients threatened by ventricular tachycardia (VT pts). Two groups of patients after myocardial infarction were studied: 13 non VT pts and 30 VT pts. The TCRT parameter values differentiated VT pts group from non VT pts group for all analyzed sets of ECG leads. Considering sensitivity of the TCRT parameter in identifying VT patients the best set of ECG leads was selected.