A novel approach to solving the output contention in packet switching networks with synchronous s... more A novel approach to solving the output contention in packet switching networks with synchronous switching mode is presented. A contention controller has been designed based on the K-winner-take-all neural-network technique with a speedup factor to achieve a real-time computation of a nonblocking switching high-speed high-capacity packet switch without packet loss. Simulation results for evaluation of the performance of the K-winner network controller with 10 neurons are presented to study the constraints of the "frozen state" as well as those of same initial state. An optoelectronic contention controller constructed from a K-winner neural network is proposed.
We present two switching schemes for routing optical information signals that are transported by ... more We present two switching schemes for routing optical information signals that are transported by wavelength division multiplexed (WDM) networks with and without grouping of optical channels of different wavelength allocations. A brief account of two WDM packet switches without channel grouping are briefly described with the use of a neural network controller for routing control to illustrate the necessity for grouping wavelength channels. This leads to designs of improved WDM packet switch architectures which are described in details for wavelength routing, broadcasting and selecting wavelength channels. Optical channels with different wavelength allocations are grouped and appropriate routing algorithms are designed to enhance the throughput efficiency of the packet switch. Computer simulation is carried out to evaluate the performance of a WDM packet switching system with output channel grouping which exhibits only single intermediate stage architecture.
This paper reports the results of an investigation into the neutrality of the narrative discussio... more This paper reports the results of an investigation into the neutrality of the narrative discussion of financial performance and position, as evidenced in 179 annual reports of UK listed companies. Neutrality of narrative discussion was determined by comparing the average proportions of good and bad news contained in the narrative and statutory accounts sections of the annual reports. The results of a comparison of the proportion of good news in the two sections of the annual reports suggest that the narrative sections contained a significantly higher proportion of good news than the statutory accounts sections. Comparison of proportions of bad news, however, indicates that the narrative sections contained a significantly lower proportion of bad news compared to the statutory accounts sections. Finally, the results also suggest that the proportion of good news as compared to bad news in the narrative sections is significantly higher than the proportion of good news compared to bad news in the statutory accounts section. The results are consistent with the suggestion that company management highlights good news in narrative discussions. The implications of the findings for company management, users, auditors and regulators are discussed. 2
A novel approach to solving the output contention in packet switching networks with synchronous s... more A novel approach to solving the output contention in packet switching networks with synchronous switching mode is presented. A contention controller has been designed based on the K-winner-take-all neural-network technique with a speedup factor to achieve a real-time computation of a nonblocking switching high-speed high-capacity packet switch without packet loss. Simulation results for evaluation of the performance of the K-winner network controller with 10 neurons are presented to study the constraints of the "frozen state" as well as those of same initial state. An optoelectronic contention controller constructed from a K-winner neural network is proposed.
We present two switching schemes for routing optical information signals that are transported by ... more We present two switching schemes for routing optical information signals that are transported by wavelength division multiplexed (WDM) networks with and without grouping of optical channels of different wavelength allocations. A brief account of two WDM packet switches without channel grouping are briefly described with the use of a neural network controller for routing control to illustrate the necessity for grouping wavelength channels. This leads to designs of improved WDM packet switch architectures which are described in details for wavelength routing, broadcasting and selecting wavelength channels. Optical channels with different wavelength allocations are grouped and appropriate routing algorithms are designed to enhance the throughput efficiency of the packet switch. Computer simulation is carried out to evaluate the performance of a WDM packet switching system with output channel grouping which exhibits only single intermediate stage architecture.
This paper reports the results of an investigation into the neutrality of the narrative discussio... more This paper reports the results of an investigation into the neutrality of the narrative discussion of financial performance and position, as evidenced in 179 annual reports of UK listed companies. Neutrality of narrative discussion was determined by comparing the average proportions of good and bad news contained in the narrative and statutory accounts sections of the annual reports. The results of a comparison of the proportion of good news in the two sections of the annual reports suggest that the narrative sections contained a significantly higher proportion of good news than the statutory accounts sections. Comparison of proportions of bad news, however, indicates that the narrative sections contained a significantly lower proportion of bad news compared to the statutory accounts sections. Finally, the results also suggest that the proportion of good news as compared to bad news in the narrative sections is significantly higher than the proportion of good news compared to bad news in the statutory accounts section. The results are consistent with the suggestion that company management highlights good news in narrative discussions. The implications of the findings for company management, users, auditors and regulators are discussed. 2
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Papers by H. Chong