Abstract: An interactive bi-directional telecommunication method using a handheld low power user device to access a host computer server along a telecommunication path, and to command the host computer server to transmit audio and/or visual reports to the user device. A system for host computer ordering of consumer products and services using the telecommunications method and handheld low power user device.

Abstract: A projection screen for displaying projected images with a movable shutter that can be positioned and opened at any location within a large rectangular area of the surface of the projection screen. Physical objects and light signals may pass through the open shutter. When the shutter is closed, the projection screen appears to a viewer as a continuous, unbroken, vertical reflective surface.

Abstract: A method and system for computationally analyzing an initial set of patterns in order to identify subsets of patterns, called clusters, that contain common sub-patterns. The patterns of the initial set of patterns are represented as linear sequences of subunits, and the common sub-patterns occur as sub-sequences of subunits within the linear sequences starting at different positions within the different linear sequences. Variations in the offset and in the sequence of subunits within a common sub-pattern are considered in the analysis. In one embodiment, an initial set of oligonucleotide sequences that are produced by various biochemical techniques are computationally analyzed to identify clusters that may correspond to a number of different binding sites for DNA-binding proteins within one or more double-stranded DNA duplexes. The method places each oligonucleotide sequence within a new cluster and calculates an initial information weight matrix for that cluster.

Abstract: A handheld low power user device for accessing and controlling interactive bidirectional real time telecommunications with a host server over a telecommunication path, the handheld low power user device having a low power sleep mode and components including a communication transceiver, a microprocessor, a power supply interface and an operator interface selected from among a keypad, a bar code reader, an audio system comprising a speaker, a display screen and a microphone; wherein, the communication transceiver includes a low power voice and data modem, and a DTMF or an MF tone generator; the audio system includes a dual power system; the bar code reader includes a bar code media proximity detector; the microprocessor includes less than about 128 Kbytes of PROM, a protected memory, and RAM; the power supply interface is connected with a telephone line, a cellular or wireless telephone battery, or a PBX line; and the handheld low power user device operates on less than about 300 milliwatts of power when off ho

Abstract: An accurate-automated-multi-axis machine for projecting objects. Multiple axes are employed to impart predetermined velocities and rotational components to the projected object. Projection of the object may be synchronized with a displayed video image to simulate the throwing of an object.

Abstract: A concrete hardening and dust prevention solution that can be applied at low temperatures to harden and air-dry concrete surfaces. The low temperature concrete hardening and dust prevention solution comprises about 75% by weight of dimethyl glutarate, about 24.75% by weight of tung oil, and about 0.25% by weight of dimethyl phtalate. The low temperature concrete hardening and dust prevention solution may be applied at temperatures ranging from -35 degrees Fahrenheit to +42 degrees Fahrenheit.