Based on comprehensive construction of the linguistic ontology category system, the basic categorical units for nouns and verbs in Chinese can be defined.Furthermore, logic symbols could be applied to jointing of cate...Based on comprehensive construction of the linguistic ontology category system, the basic categorical units for nouns and verbs in Chinese can be defined.Furthermore, logic symbols could be applied to jointing of categories and procedure of lexical meaning's calculating, thereby externalizing and formalizing the calculating procedure of lexical meaning.This could contribute to Chinese computational linguistics and international Chinese teaching.展开更多
Memristor-based architectures hold great potential for future computing systems.However,the reliance on monotonous electrical input to regulate resistance limits the possibilities for high-density storage and multifun...Memristor-based architectures hold great potential for future computing systems.However,the reliance on monotonous electrical input to regulate resistance limits the possibilities for high-density storage and multifunctional integration.In this work,we report a multi-functional memristor based on optical and electrical modulation,utilizing double perovskite oxide materials.La_(2)CoMn_(1-x)Cr_(x)O_(6)(x=0,0.15,0.25,0.35)films were fabricated on a LaNiO_(3)/SiO_(2)/Si conductive heterojunction via the sol-gel method.Among the different Cr doping concentrations,x=0.25(25%Cr)was found to be the optimal condition,enhancing both surface quality and resistive switching(RS)performance in the La_(2)CoMn_(1-x)Cr_(x)O_(6)-based films.For the first time,ten distinct resistance states were achieved in an Au/La_(2)CoMn_(0.75)Cr_(0.25)O_(6)(Cr-LCMO-25)/LaNiO_(3)/SiO_(2)/Si device,driven by varying light intensity(650 nm).These states remained stable for 12,000 s and over 450 cycles,demonstrating excellent multilevel RS memory performance in the Cr-LCMO-25-based device.The RS behavior followed the oxygen vacancy(OV)-controlled space charge-limited current model.Cr doping increased the OV concentration,which in turn enhanced the RS behavior.Additionally,photoinduced carriers at the Au/Cr-LCMO-25 interface modulated the Schottky-like barrier,further influencing the multilevel RS behavior.Importantly,complex logic operations,including AND,OR,NOT,and XNOR,were successfully performed using both electrical and optical inputs.This study offers a promising approach to increase memory density,simplify logic circuits,and create lead-free double perovskite-based multifunctional memristors.展开更多
Network coding brings many benefits for multicast networks. It is necessary to introduce network coding into optical networks. Nevertheless, the traditional network coding scheme is hard to be implemented in optical n...Network coding brings many benefits for multicast networks. It is necessary to introduce network coding into optical networks. Nevertheless, the traditional network coding scheme is hard to be implemented in optical networks because of the weak operation capability in photonic domain. In the paper, we focused on realizing two-channel network coding in all-optical multicast networks. An optical network coding scheme which can be realized via logic shift and logic XOR operations in photonic domain was proposed. Moreover, to perform the network coding scheme the coding node structure was designed and the operation principle and processes were illustrated in detail. In the end of the paper, the performance and the cost of different all-optical multicast mode were compared and analyzed.展开更多
基金funded by the 62nd China Postdoctoral Science Foundation“Research on the Intercommunity of Chinese Nominal Verb and Subject Words and Its Semantic Category Analysis”(2017M622893)。
文摘Based on comprehensive construction of the linguistic ontology category system, the basic categorical units for nouns and verbs in Chinese can be defined.Furthermore, logic symbols could be applied to jointing of categories and procedure of lexical meaning's calculating, thereby externalizing and formalizing the calculating procedure of lexical meaning.This could contribute to Chinese computational linguistics and international Chinese teaching.
基金supported by the National Natural Science Foundation of China(Nos.12104106,12464012,12464028,12164005,12074382,11804062,and 11474285)the Natural Science Foundation of Guangxi Zhuang Autonomous Region(No.2021GXNSFAA220044).
文摘Memristor-based architectures hold great potential for future computing systems.However,the reliance on monotonous electrical input to regulate resistance limits the possibilities for high-density storage and multifunctional integration.In this work,we report a multi-functional memristor based on optical and electrical modulation,utilizing double perovskite oxide materials.La_(2)CoMn_(1-x)Cr_(x)O_(6)(x=0,0.15,0.25,0.35)films were fabricated on a LaNiO_(3)/SiO_(2)/Si conductive heterojunction via the sol-gel method.Among the different Cr doping concentrations,x=0.25(25%Cr)was found to be the optimal condition,enhancing both surface quality and resistive switching(RS)performance in the La_(2)CoMn_(1-x)Cr_(x)O_(6)-based films.For the first time,ten distinct resistance states were achieved in an Au/La_(2)CoMn_(0.75)Cr_(0.25)O_(6)(Cr-LCMO-25)/LaNiO_(3)/SiO_(2)/Si device,driven by varying light intensity(650 nm).These states remained stable for 12,000 s and over 450 cycles,demonstrating excellent multilevel RS memory performance in the Cr-LCMO-25-based device.The RS behavior followed the oxygen vacancy(OV)-controlled space charge-limited current model.Cr doping increased the OV concentration,which in turn enhanced the RS behavior.Additionally,photoinduced carriers at the Au/Cr-LCMO-25 interface modulated the Schottky-like barrier,further influencing the multilevel RS behavior.Importantly,complex logic operations,including AND,OR,NOT,and XNOR,were successfully performed using both electrical and optical inputs.This study offers a promising approach to increase memory density,simplify logic circuits,and create lead-free double perovskite-based multifunctional memristors.
基金supported by the National Natural Science Foundation of China (61171103)the Doctoral Research Fund of Shandong University of Technology (4041-411023)
文摘Network coding brings many benefits for multicast networks. It is necessary to introduce network coding into optical networks. Nevertheless, the traditional network coding scheme is hard to be implemented in optical networks because of the weak operation capability in photonic domain. In the paper, we focused on realizing two-channel network coding in all-optical multicast networks. An optical network coding scheme which can be realized via logic shift and logic XOR operations in photonic domain was proposed. Moreover, to perform the network coding scheme the coding node structure was designed and the operation principle and processes were illustrated in detail. In the end of the paper, the performance and the cost of different all-optical multicast mode were compared and analyzed.
