In this paper we present some results from our research on representation methods and architectural model of UIMS, suitable for accommodating various interactive styles. By roughly describing an experi- mental system ...In this paper we present some results from our research on representation methods and architectural model of UIMS, suitable for accommodating various interactive styles. By roughly describing an experi- mental system of BD-UIMS, we lay emphasis on how to support direct manipulation and semantic feedback. Particular attention is given to a simple conceptual model of user interface as well. Based on this model, the designing process of user interface is rather easy. Although current work is under DOS environment, the approach of transplanting it to UNIX is being developed.展开更多
Extensive experiments suggest that kurtosis-based fingerprint features are effective for specific emitter identification (SEI). Nevertheless, the lack of mechanistic explanation restricts the use of fingerprint featur...Extensive experiments suggest that kurtosis-based fingerprint features are effective for specific emitter identification (SEI). Nevertheless, the lack of mechanistic explanation restricts the use of fingerprint features to a data-driven technique and fur-ther reduces the adaptability of the technique to other datasets. To address this issue, the mechanism how the phase noise of high-frequency oscillators and the nonlinearity of power ampli-fiers affect the kurtosis of communication signals is investigated. Mathematical models are derived for intentional modulation (IM) and unintentional modulation (UIM). Analysis indicates that the phase noise of high-frequency oscillators and the nonlinearity of power amplifiers affect the kurtosis frequency and amplitude, respectively. A novel SEI method based on frequency and ampli-tude of the signal kurtosis (FA-SK) is further proposed. Simula-tion and real-world experiments validate theoretical analysis and also confirm the efficiency and effectiveness of the proposed method.展开更多
文摘In this paper we present some results from our research on representation methods and architectural model of UIMS, suitable for accommodating various interactive styles. By roughly describing an experi- mental system of BD-UIMS, we lay emphasis on how to support direct manipulation and semantic feedback. Particular attention is given to a simple conceptual model of user interface as well. Based on this model, the designing process of user interface is rather easy. Although current work is under DOS environment, the approach of transplanting it to UNIX is being developed.
基金supported by the Youth Science and Technology Innovation Award of National University of Defense Technology (18/19-QNCXJ)the National Science Foundation of China (62271494)
文摘Extensive experiments suggest that kurtosis-based fingerprint features are effective for specific emitter identification (SEI). Nevertheless, the lack of mechanistic explanation restricts the use of fingerprint features to a data-driven technique and fur-ther reduces the adaptability of the technique to other datasets. To address this issue, the mechanism how the phase noise of high-frequency oscillators and the nonlinearity of power ampli-fiers affect the kurtosis of communication signals is investigated. Mathematical models are derived for intentional modulation (IM) and unintentional modulation (UIM). Analysis indicates that the phase noise of high-frequency oscillators and the nonlinearity of power amplifiers affect the kurtosis frequency and amplitude, respectively. A novel SEI method based on frequency and ampli-tude of the signal kurtosis (FA-SK) is further proposed. Simula-tion and real-world experiments validate theoretical analysis and also confirm the efficiency and effectiveness of the proposed method.
