It\u27s About Time: The Need for a Uniform Approach to Using a Prior Conviction to Impact a Witness.

In Texas, no uniform approach exists in determining whether to admit evidence of a prior conviction as a technique to impeach a witness. This lack of uniformity leads to significant consequences for the parties and poses a potential prejudicial effect on the truthful character of a witness. Furthermore, there is currently no bright-line judicial standard when evaluating the admissibility of certain prior convictions. Although the Texas Court of Criminal Appeals in Theus v. State provided a non-exhaustive set of factors for trial judges to consider, the court has yet to clarify particular aspects of how to properly apply Texas Rule of Evidence 609. Thus, intermediate courts continue to inconsistently interpret Rule 609. Rule 609 grants an exception to use certain prior criminal convictions of a witness as circumstantial evidence of the witness’s untruthful character. Such evidence is admissible if it is established by an acceptable mode of proof, it fits into a qualifying category, and if the court determines the probative value of admitting the impeachment evidence outweighs its prejudicial effect to a party. The rule hinges on the central premise that evidence of a prior conviction to impeach the credibility of a witness at trial must be balanced against any threat that the same conviction will mislead the jury. An explicit clarification by the Texas Court of Criminal Appeals will not only aid in applying the rule consistently, it will ensure that courts across Texas will evaluate all prior convictions offered as attacks upon witnesses by a uniform and logical criteria that mirror the purpose and intent underlying Rule 609

It\u27s About Time: The Need for a Uniform Approach to Using a Prior Conviction to Impact a Witness.

In Texas, no uniform approach exists in determining whether to admit evidence of a prior conviction as a technique to impeach a witness. This lack of uniformity leads to significant consequences for the parties and poses a potential prejudicial effect on the truthful character of a witness. Furthermore, there is currently no bright-line judicial standard when evaluating the admissibility of certain prior convictions. Although the Texas Court of Criminal Appeals in Theus v. State provided a non-exhaustive set of factors for trial judges to consider, the court has yet to clarify particular aspects of how to properly apply Texas Rule of Evidence 609. Thus, intermediate courts continue to inconsistently interpret Rule 609. Rule 609 grants an exception to use certain prior criminal convictions of a witness as circumstantial evidence of the witness’s untruthful character. Such evidence is admissible if it is established by an acceptable mode of proof, it fits into a qualifying category, and if the court determines the probative value of admitting the impeachment evidence outweighs its prejudicial effect to a party. The rule hinges on the central premise that evidence of a prior conviction to impeach the credibility of a witness at trial must be balanced against any threat that the same conviction will mislead the jury. An explicit clarification by the Texas Court of Criminal Appeals will not only aid in applying the rule consistently, it will ensure that courts across Texas will evaluate all prior convictions offered as attacks upon witnesses by a uniform and logical criteria that mirror the purpose and intent underlying Rule 609

Multi-train trajectory optimisation to maximise rail network energy efficiency under travel-time constraints

Optimising the trajectories of multiple interacting trains to maximise energy efficiency is a difficult, but highly desirable, problem to solve. A bespoke genetic algorithm has been developed for the multi-train trajectory optimisation problem and used to seek a near-optimal set of control point distances for multiple trains, such that a weighted sum of the time and energy objectives is minimised. Genetic operators tailored to the problem are developed including a new mutation operation and the insertion and deletion pairs of control points during the reproduction process. Compared with published results, the new GA was shown to increase the quality of solutions found by an average of 27.6% and increase consistency by a factor of 28. This allows more precise control over the relative priority given to achieving time targets or increasing energy efficiency

Downlink data multiplexer

A data multiplexer that accommodates both industry standard CCSDS data packets and bits streams and standard IEEE 1394 data is described. The multiplexer provides a statistical allotment of bandwidth to the channels in turn, preferably four, but expandable in increments of four up to sixteen. A microcontroller determines bandwidth requested by the plurality of channels, as well as the bandwidth available, and meters out the available bandwidth on a statistical basis employing flow control to the input channels

Downlink Data Multiplexer

A multiplexer/demultiplexer system has been developed to enable the transmission, over a single channel, of four data streams generated by a variety of sources at different (including variable) bit rates. In the original intended application, replicas of this multiplexer/demultiplexer system would be incorporated into the spacecraft-to-ground communication systems of the space shuttles. The multiplexer of each system would be installed in the spacecraft, where it would acquire and process data from such sources as commercial digital camcorders, video tape recorders, and the spacecraft telemetry system. The demultiplexer of each system would be installed in a ground station. Purely terrestrial systems of similar design could be attractive for use in situations in which there are requirements to transmit multiple streams of high-quality video data and possibly other data over single channels. The figure is a block diagram of the multiplexer as configured to process data received via three fiber-optic channels like those of the International Space Station and one electrical-cable channel that conforms to the Institute of Electrical and Electronic Engineers (IEEE) 1394 standard. (This standard consists of specifications of a high-speed serial data interface, the physical layer of which includes a cable known in the art as "FireWire." An IEEE 1394 interface can also transfer power between the components to which it is connected.) The fiber-optic channels carry packet and/or bit-stream signals that conform to the standards of the Consultative Committee for Space Data Systems (CCSDS). The IEEE 1394 interface accepts an isochronous signal like that from a digital camcorder or a video tape recorder. The processing of the four input data streams to combine them into one output stream is governed by a statistical multiplexing algorithm that features a flow-control capability and makes it possible to utilize the transmission channel with nearly 100-percent efficiency. This algorithm allocates the available bandwidth of the transmission channel to the data streams according to a combination of data rates and preassigned priorities. Incoming data streams that demand too much bandwidth are blocked. Bandwidth not needed for a transmission of a given data stream is allocated to other streams as available. Priority is given to the IEEE 1394 stream. In addition to the four incoming data streams, the multiplexer transmits data on the status of the system. An operator can monitor and control the multiplexer via displays and controls on the multiplexer housing. The output of the multiplexer is connected via a coaxial cable with an impedance of 50 Ohms to an interface circuit compatible with the space-shuttle high-speed digital downlink, which operates at a rate of 48 Mb/s