Abstract: A system and method of the present invention emulates electronic input devices such as a steering wheel, a mouse, a joystick, a navigation bar, a scroll wheel, and a pressure-sensitive button. The method comprises swiping a finger on a swipe sensor, calculating a difference between a first position of the finger on the swipe sensor and a second position on the swipe sensor, and translating the difference into a plurality of sets of signals. Each set of signals is used to emulate the signals generated by one of the electronic input devices. The method thus uses a single swipe sensor to emulate multiple electronic input devices. In a preferred embodiment, the system is used to control a display on a portable electronic device is coupled to or forms part of the portable electronic device.

Abstract: A hand held computer device for teaching mathematical inter-relationships The device interactively and directly demonstrates the inter-relationship between a graphical representation of a mathematical relation and other representations of the mathematical relation such as an equation or table of values as a user manipulates a graph of the mathematical relation via a stylus/touch screen graphical user interface of the device. Such manipulation simultaneously correspondingly amends another displayed form of the mathematical relation.

Abstract: A telephone wiretapping system having a call-forward event and reporting processor for producing a call-forward event control signal when a call from a calling party to a predetermined telephone line is to be call-forwarded to a different telephone line. A switch is responsive to the control signal produced by the call forward event and reporting system for switching the recording device from the target telephone line to the call-forward event and reporting processor when the control signal indicates a call-forwarding event. With such an arrangement, the recording device will recorded calling event signals to, or from, the target telephone line even though the calling event signals are occurring at the call-forwarded telephone line. The call-forward event and reporting processor produces signalling information taking place between the telephone line of the calling party and the telephone line of the different, call-forwarded telephone line.

Abstract: A method of intercepting the incoming and outgoing calls of a telecommunications subscriber. The call activity of the telecommunications line of the subscriber is monitored by a call processor of a telecommunications switch and predetermined types of call activity are recorded by a recording device. The switch monitors the call activity of a second telecommunications line upon the detection of a predetermined call feature occurring for the subscriber and the recording device records predetermined types of call activity on the second line upon the monitoring of the second line. The switch may also switch, upon the detection of the predetermined call feature, from monitoring the call activity of the subscriber line to monitoring the call activity of the second line. The switch may also switch the recording device from recording the call activity of the subscriber line to recording the call activity of the second line.

Abstract: The mine support system (26) is typically used in underground coal mines. Support for the hanging wall (40) of the mine is provided by elongate, transversely extending headboards (10) which are supported by spaced apart supports. The supports may take the form of upright mine supports, typically timber props (28) located on the footwall (34) of the mine working, by roof bolts (30) engaging the hanging wall, or by a combination of props and roof bolts. Prestressing grout bags (32) are located on the headboards and bear against the hanging wall. The combination of headboards and bags forms a continuous bridge between the props.

Abstract: This invention relates to a grout composition comprising a Portland cement, a high alumina cement, anhydrous calcium sulphate, an effective amount of a lithium salt and an effective amount of a strong base. According to another aspect of the invention, instead of using a strong base directly in the grout composition, a first compound and a second compound is added to the grout composition which in use react to form an effective amount of a strong base when the grout composition is mixed with water.

Abstract: A transaction management protocol for a multi-processor computer system in which the processors are organized in multi-level hierarchy for implementing the transaction, the protocol being a modification and elaboration of the Presumed Abort (PA) protocol. A coordinating processor is permitted to forget the participation of a subordinate as soon as the protocol has reached the point at which the subordinate's actions on recovery from a crash would be independent of the outcome (commit or abort) of the protocol.

Abstract: The yieldable load support comprises a compressible support member in the form of an elongate timber pole. The load support or pole is asymmetrically modified at or near one end thereof in a manner to positively induce sideways brushing of the pole at the modified end, in a preferential direction transverse to the length of the pole, when the support member is placed under longitudinal compressive load of sufficient magnitude.