Abstract: A method is described which includes receiving a time series of radio data (S1). The method includes, for each of a plurality of buffer periods, at the end of a most recently elapsed buffer period, analysing the radio data of that buffer period to detect signals (S2). The method also includes, in response to detecting one or more signals ending within that buffer period (S4|Yes), determining a start time and an end time of that signal, and one or more signal properties corresponding to that signal, the signal properties including at least a duration, and storing (S5) that signal to a detailed database (DD) and a summary database (SD). Methods of querying the summary database (SD) and detailed database (AD) are also described, along with apparatuses for carrying out the methods.

Abstract: A method is described which includes receiving a time series of radio data (S1). The method includes, for each of a plurality of buffer periods, at the end of a most recently elapsed buffer period, analysing the radio data of that buffer period to detect signals (S2). The method also includes, in response to detecting one or more signals ending within that buffer period (S4|Yes), determining a start time and an end time of that signal, and one or more signal properties corresponding to that signal, the signal properties including at least a duration, and storing (S5) that signal to a detailed database (DD) and a summary database (SD). Methods of querying the summary database (SD) and detailed database (AD) are also described, along with apparatuses for carrying out the methods.

Abstract: The present invention provides for a non-woven fabric composite consisting essentially of a mutually interbonded mixture of crimped isotactic polypropylene fiber segments and uncrimped hard elastic isotactic polypropylene fiber segments. A process to manufacture the non-woven fabric composite and textile goods fabricated from the disclosed non-woven fabric composite are also provided.

Abstract: A trailer comprising a load bearing section, a wheel carrying assembly and a draw bar. The load bearing section and the wheel carrying assembly are relatively displaceable between a conventional towing position (FIG. 1, FIG. 5) and a position in which the wheel carrying assembly supports the trailer in a substantially vertical disposition (FIG. 3, FIG. 7) for stowage.

Abstract: An earthing system for domestic and commercial buildings comprises a lug formed from material compatible with reinforcing used in the building foundation, a flexible conductor and a fixing member. The lug and/or the fixing member are of different material than the conductor and are preferably welded to the conductor using an exothermic welding process.