Based on dominant degree of role model among the viewpoints for object oriented modeling process,this paper presents a graphic notation of role model,and dissertates that role modeling is a modeling method for softwar...Based on dominant degree of role model among the viewpoints for object oriented modeling process,this paper presents a graphic notation of role model,and dissertates that role modeling is a modeling method for software pattern at knowledge level. After gaving some examples for modeling analysis pattern and design pattern at knowledge level using role model ,this paper presents the process for refining design pattern from role model to class model and event trace diagram of UML. In this paper,we advocate the opinion that role modeling before object modeling of UML. Through combining role model and UML ,we construct a more comprehensive modeling method for object-oriented modeling process.展开更多
With the rapid development of integrated circuit(IC)technology,reusable intelligent property(IP)core design is widely valued by the industry.Based on the in-depth study of the functional characteristics of advanced mi...With the rapid development of integrated circuit(IC)technology,reusable intelligent property(IP)core design is widely valued by the industry.Based on the in-depth study of the functional characteristics of advanced microcontroller bus architecture(AMBA),a design scheme of IP core is presented,and it is divided into the functional modules,and the structural design of the IP core is completed.The relationship between the internal modules of the IP core is clarified,and the top-down design method is used to build the internal architecture of the IP core.The IP core interface module,register module,baud rate module,transmit module,receive module,and interrupt module are designed in detail by using Verilog language.The simulation results show that the designed IP core supports serial peripheral interface(SPI)protocol,the function coverage of IP core reaches 100%,the maximum working frequency reaches 200 MHz,and the resource occupancy rate is less than 15%.The reusable IP core can support multiple data formats,multiple timing transmission modes,and master/slave operation modes,reducing the resource consumption of hardware circuits and having stronger applicability.展开更多
The knowledge accumulation through knowledge acquisition and technological learning is a necessary condition for enterprise upgrading in global chains.The knowledge flow obstacle caused by the knowledge barriers is th...The knowledge accumulation through knowledge acquisition and technological learning is a necessary condition for enterprise upgrading in global chains.The knowledge flow obstacle caused by the knowledge barriers is the major reason for low-locked in the global value chain based on the analysis of knowledge flow,where standard is one of the most cmmonly used knowledge barriers.In this regard,a standard strategy based on similar technology development can be adopted to step over knowledge barriers and achieve upgrading.展开更多
This paper deals with the application of data mining techniques to the conceptual design knowledge for a LV （launch vehicle） with a HRE （hybrid rocket engine）. This LV is a concept of the space transportation, whi...This paper deals with the application of data mining techniques to the conceptual design knowledge for a LV （launch vehicle） with a HRE （hybrid rocket engine）. This LV is a concept of the space transportation, which can deliver micro-satellite to the SSO （sun-synchronous orbit）. To design the higher performance LV with HRE, the optimum size of each component, such as an oxidizer tank containing liquid oxidizer, a combustion chamber containing solid fuel, a pressurizing tank and a nozzle, should be acquired. The Kriging based ANOVA （analysis of variance） and SOM （self-organizing map） are employed as data mining techniques for knowledge discovery. In this study, the paraffin （FT-0070） is used as a propellant of HRE. Then, the relationship among LV performances and design variables are investigated through the analysis and the visualization. To calculate the engine performance, the regression rate is computed based on an empirical expression. The design knowledge is extracted for the design knowledge of the multi-stage LV with HRE by analysis using ANOVA and SOM. As a result, the useful design knowledge on the present design problem is obtained to design HRE for space transportation.展开更多
AS a distinguished expert on China’s Thousand Talents Program,Yu Dechao is a heavyweight in the country’s biological pharmacy.As a major founder of Oncorine,the world’s first patented anti-tumor virus therapy drug,...AS a distinguished expert on China’s Thousand Talents Program,Yu Dechao is a heavyweight in the country’s biological pharmacy.As a major founder of Oncorine,the world’s first patented anti-tumor virus therapy drug,he also invented Conbercept,China’s first monoclonal antibody drug whose global intellectual property rights it owns.展开更多
文摘Based on dominant degree of role model among the viewpoints for object oriented modeling process,this paper presents a graphic notation of role model,and dissertates that role modeling is a modeling method for software pattern at knowledge level. After gaving some examples for modeling analysis pattern and design pattern at knowledge level using role model ,this paper presents the process for refining design pattern from role model to class model and event trace diagram of UML. In this paper,we advocate the opinion that role modeling before object modeling of UML. Through combining role model and UML ,we construct a more comprehensive modeling method for object-oriented modeling process.
文摘With the rapid development of integrated circuit(IC)technology,reusable intelligent property(IP)core design is widely valued by the industry.Based on the in-depth study of the functional characteristics of advanced microcontroller bus architecture(AMBA),a design scheme of IP core is presented,and it is divided into the functional modules,and the structural design of the IP core is completed.The relationship between the internal modules of the IP core is clarified,and the top-down design method is used to build the internal architecture of the IP core.The IP core interface module,register module,baud rate module,transmit module,receive module,and interrupt module are designed in detail by using Verilog language.The simulation results show that the designed IP core supports serial peripheral interface(SPI)protocol,the function coverage of IP core reaches 100%,the maximum working frequency reaches 200 MHz,and the resource occupancy rate is less than 15%.The reusable IP core can support multiple data formats,multiple timing transmission modes,and master/slave operation modes,reducing the resource consumption of hardware circuits and having stronger applicability.
文摘The knowledge accumulation through knowledge acquisition and technological learning is a necessary condition for enterprise upgrading in global chains.The knowledge flow obstacle caused by the knowledge barriers is the major reason for low-locked in the global value chain based on the analysis of knowledge flow,where standard is one of the most cmmonly used knowledge barriers.In this regard,a standard strategy based on similar technology development can be adopted to step over knowledge barriers and achieve upgrading.
文摘This paper deals with the application of data mining techniques to the conceptual design knowledge for a LV （launch vehicle） with a HRE （hybrid rocket engine）. This LV is a concept of the space transportation, which can deliver micro-satellite to the SSO （sun-synchronous orbit）. To design the higher performance LV with HRE, the optimum size of each component, such as an oxidizer tank containing liquid oxidizer, a combustion chamber containing solid fuel, a pressurizing tank and a nozzle, should be acquired. The Kriging based ANOVA （analysis of variance） and SOM （self-organizing map） are employed as data mining techniques for knowledge discovery. In this study, the paraffin （FT-0070） is used as a propellant of HRE. Then, the relationship among LV performances and design variables are investigated through the analysis and the visualization. To calculate the engine performance, the regression rate is computed based on an empirical expression. The design knowledge is extracted for the design knowledge of the multi-stage LV with HRE by analysis using ANOVA and SOM. As a result, the useful design knowledge on the present design problem is obtained to design HRE for space transportation.
文摘AS a distinguished expert on China’s Thousand Talents Program,Yu Dechao is a heavyweight in the country’s biological pharmacy.As a major founder of Oncorine,the world’s first patented anti-tumor virus therapy drug,he also invented Conbercept,China’s first monoclonal antibody drug whose global intellectual property rights it owns.
