摘要：A model of the irreversible regenerative Brayton refrigeration cycle working with paramagnetic materials is established,in which the regeneration problem in two constant-magnetic field processes and the irreversibility in two adiabatic processes are considered *** for the COP,cooling rate,power input,theminimum ratio of the two magnetic fields,etc.,are *** is found that the influence of the irreversibility and the regeneration on the main performance parameters of the magnetic Brayton refrigerator is *** is important that we have obtained several optimal criteria,which may provide some theoretical basis for the optimal design and operation of the Brayton *** results obtained in the paper can provide some new theoretical information for the optimal design and performance improvement of real Brayton refrigerators.

摘要：A novel direct sequence （DS） design method for suppressing the narrowband interference in DS spread spectrum ultra-wideband receivers is proposed. The method has low computational complexity and can be easily implemented in practical systems. Simulation results prove that the proposed method is effective to suppress the narrowband interference. Therefore, the integrity of both the ultra-wide bandwidth and the narrowband systems can be highly enhanced.

摘要：In the following is an article of dialogue between Professor Massimo Verdicchio and Professor Huang *** Huang Kaihong,along with the help from Professor Wang Jinlong,carried out the interview on the topic of the relation between play theory and literature with Professor Massimo *** the one hand,Professor Huang Kaihong points out that play theory has been stemmed and developed from game theory but pushed forward a further step in its application to the analysis of literary works,while Professor Massimo Verdicchio regards play theory just as another approach to the appreciation of literary *** Professors agree on that literary works can be analyzed and appreciated from different perspectives,and they also discussed about something concerning the ethics in *** article ends with the correspondence via email between Professor Massimo Verdicchio and Professor Huang Kaihong on exchanging more personal opinions towards play theory’s crucial issues.