|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | DESIGN AND FABRICATION OF Si/SiGe PMOSFETs显示文摘Based on theoretical analysis and computer-aided simulation, optimized design principles for Si/SiGe PMOSFET are given in this paper, which include choice of gate materials,determination of germanium percentage and profile in SiGe channel, optimization of thickness of dioxide and silicon cap layer, and adjustment of threshold voltage. In the light of these principles,a SiGe PMOSFET is designed and fabricated successfully. Measurement indicates that the SiGe PMOSFET's (L=2μm) transconductance is 45 mS/mm (300K) and 92mS/mm (77K), while that is 33 mS/mm (300K) and 39mS/mm (77K) in Si PMOSFET with the same structure. | Yang Peifeng Li Jingchun Yu Qi Wang Xiangzhan Yang Mohua (Dept. of Microelectronic Science and Eng., UEST of China, Chengdu 610054)He Lin Li Kaicheng Tan KaizhouLiu Daoguang Zhang Jing Yi Qiang Fan Zerui(National Key Laboratory of Analog IC’s, Chongqing 400060) | 2002 | Journal of Electronics(China)2002，19，1： | 1 |
| 2 | Design of Teaching System of Industrial Robots Using Mixed Reality Technology显示文摘Traditional teaching and learning about industrial robots uses abstract instructions,which are difficult for students to understand.Meanwhile,there are safety issues associated with the use of practical training equipment.To address these problems,this paper developed an instructional system based on mixed-reality(MR)technology for teaching about industrial robots.The Siasun T6A-series robots were taken as a case study,and the Microsoft MR device HoloLens-2 was used as the instructional platform.First,the parameters of the robots were analyzed based on their structural drawings.Then,the robot modules were decomposed,and 1:1 three-dimensional(3D)digital reproductions were created in Maya.Next,a library of digital models of the robot components was established,and a 3D spatial operation interface for the virtual instructional system was created in Unity.Subsequently,a C#code framework was established to satisfy the requirements of interactive functions and data transmission,and the data were saved in JSON format.In this way,a key technique that facilitates the understanding of spatial structures and a variety of human-machine interactions were realized.Finally,an instructional system based on HoloLens-2 was established for understanding the structures and principles of robots.The results showed that the instructional system developed in this study provides realistic 3D visualizations and a natural,efficient approach for human-machine interactions.This system could effectively improve the efficiency of knowledge transfer and the student’s motivation to learn. | Guwei Li Yun Yang Zhou Li Jingchun Fan | 2022 | Computers, Materials & Continua2022，，10： | 0 |
| 3 | Comprehensive evaluation method of urban air quality statistics based on environmental monitoring data and its application显示文摘Air quality monitoring is effective for timely understanding of the current air quality status of a region or city.Currently,the huge volume of environmental monitoring data,which has reasonable real-time performance,provides strong support for in-depth analysis of air pollution characteristics and causes.However,in the era of big data,to meet current demands for fine management of the atmospheric environment,it is important to explore the characteristics and causes of air pollution from multiple aspects for comprehensive and scientific evaluation of air quality.This study reviewed and summarized air quality evaluation methods on the basis of environmental monitoring data statistics during the 13th Five-Year Plan period,and evaluated the level of air pollution in the Beijing-Tianjin-Hebei region and its surrounding areas(i.e.,the“2+26”region)during the period of the three-year action plan to fight air pollution.We suggest that air quality should be comprehensively,deeply,and scientifically evaluated from the aspects of air pollution characteristics,causes,and influences of meteorological conditions and anthropogenic emissions.It is also suggested that a threeyear moving average be introduced as one of the evaluation indexes of long-term change of pollutants.Additionally,both temporal and spatial differences should be considered when removing confounding meteorological factors. | Linglu Qu Fahe Chai Shijie Liu Jingchun Duan Fan Meng Miaomiao Cheng | 2023 | Journal of Environmental Sciences2023，，1： | 0 |
| 4 | A Fire Escape Simulation System Based on the Dijkstra Algorithm显示文摘Despite the support of all kinds of fire prevention measures and high-tech fire prevention equipment,fires still occur frequently because of both anthro-pogenic factors and natural disasters.This issue has drawn the attention of schools,all levels of government,and other organizations.Many types of organi-zations carry out fire drills throughout the year.Because this kind of drill cannot anticipate the specific circumstances of each fire,which are generally far more complicated than drills,most people cannot correctly choose the optimal escape route from real fires.Thus,a fire-scene virtual simulation system based on the Dijkstra algorithm is here proposed to address such problems as casualties caused by frequent fires and the inability of most people to correctly choose a fire escape route.This virtual fire escape simulation system uses Maya to carry out 3D recon-struction of the fire scene,the Unity engine to conduct interactive function design,and the Dijkstra algorithm to calculate the best escape route.The results of the example indicate that the simulation system solves the problems of the traditional simulation system,such as stiffness,lack of intelligence,and poor simulation. | Haolong Yang Chunqiang Hu Guwei Li Jingchun Fan | 2021 | Computer Systems Science & Engineering2021，39，12： | 0 |
| 5 | Theoretical and technical progress in exploration practice of the deep-water large oil fields, Santos Basin, Brazil显示文摘The history and results of petroleum exploration in the Santos Basin, Brazil are reviewed. The regularity of hydrocarbon enrichment and the key exploration technologies are summarized and analyzed using the seismic, gravity, magnetic and drilling data. It is proposed that the Santos Basin had a structural pattern of two uplifts and three depressions and the Aram-Uirapuru uplift belt controlled the hydrocarbon accumulation. It is believed that the main hydrocarbon source kitchen in the rift period controlled the hydrocarbon-enriched zones, paleo-structures controlled the scale and quality of lacustrine carbonate reservoirs, and continuous thick salt rocks controlled the hydrocarbon formation and preservation. The process and mechanism of reservoirs being transformed by CO_(2)charging were revealed. Five key exploration technologies were developed,including the variable-velocity mapping for layer-controlled facies-controlled pre-salt structures, the prediction of lacustrine carbonate reservoirs, the prediction of intrusive/effusive rock distribution, the detection of hydrocarbons in lacustrine carbonates, and the logging identification of supercritical CO_(2)fluid. These theoretical recognitions and exploration technologies have contributed to the discovery of deep-water super-large reservoirs under CNODC projects in Brazil, and will guide the further exploration of deep-water large reservoirs in the Santos Basin and other similar regions. | HE Wenyuan SHI Buqing FAN Guozhang WANG Wangquan WANG Hongping WANG Jingchun ZUO Guoping WANG Chaofeng YANG Liu | 2023 | Petroleum Exploration and Development2023，50，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员