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GPU-based multi-slice per pass algorithm in interactive volume illumination rendering Research Articles
Dening Luo, Yi Lin, Jianwei Zhang,onexinoneyi@hotmail.com,Yilin@scu.edu.cn,zhangjianwei@scu.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 8, Pages 1092-1103 doi: 10.1631/FITEE.2000214
Keywords： 体绘制；体积光照；体数据；单绘制遍多切片
Chao GUO, Zeng-xuan HOU, You-zhi SHI, Jun XU, Dan-dan YU
Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 11, Pages 1843-1853 doi: 10.1631/FITEE.1601283
Keywords： 3D brush model 3D brushstroke 3D interactive painting Real-time force feedback technology
Liu Shaojun,Cao Yunzhang,He Xiaoxiao,Li Jianzhong,Liu Yun
Strategic Study of CAE 2001, Volume 3, Issue 12, Pages 33-41
In this paper, the number and karyotype of chromosomes, DNA content, the mean nuclear erythrocyte volume, gonads and gametes, embryo development, the mechanism of the tetraploid formation, and the appearance in tetraploid hybrid stocks of the red crucian carp (♀）× common carp (♂）were described. The tetraploid hybrids with stable genetic characteristics were inherited from F3 to F11 and a large population of tetraploid fish had been formed. The tetraploid hybrids were essentially different from their parents-red crucian carp and common carp in chromosome number, reproduction and appearance. Based on the genetic characteristics, the bisexual fertility and reproductive isolation, the tetraploid stocks had possessed the good base to form a new tetraploid species in the future. The formation of the new tetraploid stocks had great significance both in the evolutionary theory of vertebrate and in the production application.
Keywords： allotetraploid triploid diploid gamete evolution
The Mechanics of 3D Multi-body Contact System of Long Shell and Tyres
Liang Xiaoling,Xiao Yougang,Li Xuejun
Strategic Study of CAE 2005, Volume 7, Issue 12, Pages 41-44
According to the high iterative feature of shell and tyre structure, the multi-level substructure technique is adopted to set up the multi-body contact model between tyres and long shell. Applying parametric quadratic programming method, the multi-body contact FEM analysis of the No.2 rotary kiln in Henan Branch of China Aluminum Company is done, and the conclusions are as follows： The equivalent stress of shell at supports changes 5 times, and at other parts changes 4 times; the strength of shell at supports is weak, and at other parts is affluent; the strength of shell at the supports 2 and 3 is the weakest.
Keywords： shell multi-body contact multi-level substructure mechanical property
Magmatic Ore Deposits in Small Rockbody in China
Tang Zhongli
Strategic Study of CAE 2002, Volume 4, Issue 6, Pages 9-12
There is not any large deposit associated with giant layered igneous complex in China. But superlarge and large magmatic deposits have been discovered in many small intrusions. Therefore, research and exploration direction having great potentialities for the magmatic deposits of small intrusions is defined. The Jinchuan and Panzhihua deposits represent two important types of the magmatic deposits in China.
Keywords： small rockbody magmatic deposits exploration
Ionic Elastomers for Electric Actuators and Sensors Review
Chenrun Feng, C.P. Hemantha Rajapaksha, Antal Jákli
Engineering 2021, Volume 7, Issue 5, Pages 581-602 doi: 10.1016/j.eng.2021.02.014
In the past decades, ion conductive polymers and elastomers have drawn worldwide attention for their advanced functions in batteries, electroactive soft robotics, and sensors. Stretchable ionic elastomers with dispersed soft ionic moieties such as ionic liquids have gained remarkable attention as soft sensors, in applications such as the wearable devices that are often called electric skins. A considerable amount of research has been done on ionic-elastomer-based strain, pressure, and shear sensors; however, to the best of our knowledge, this research has not yet been reviewed. In this review, we summarize the materials and performance properties of engineered ionic elastomer actuators and sensors. First, we review three classes of ionic elastomer actuators—namely, ionic polymer metal composites, ionic conducting polymers, and ionic polymer/carbon nanocomposites—and provide perspectives for future actuators, such as adaptive four-dimensional (4D) printed systems and ionic liquid crystal elastomers (iLCEs). Next, we review the state of the art of ionic elastomeric strain and pressure sensors. We also discuss future wearable strain sensors for biomechanical applications and sports performance tracking. Finally, we present the preliminary results of iLCE sensors based on flexoelectric signals and their amplification by integrating them with organic electrochemical transistors.
Keywords： Soft robots Ionic electroactive elastomer Ionic elastomer sensor Programmable deformation Liquid crystal elastomer
Visual Prostheses: Technological and Socioeconomic Challenges Perspective
John B. Troy
Engineering 2015, Volume 1, Issue 3, Pages 288-291 doi: 10.15302/J-ENG-2015080
Visual prostheses are now entering the clinical marketplace. Such prostheses were originally targeted for patients suffering from blindness through retinitis pigmentosa (RP). However, in late July of this year, for the first time a patient was given a retinal implant in order to treat dry age-related macular degeneration. Retinal implants are suitable solutions for diseases that attack photoreceptors but spare most of the remaining retinal neurons. For eye diseases that result in loss of retinal output, implants that interface with more central structures in the visual system are needed. The standard site for central visual prostheses under development is the visual cortex. This perspective discusses the technical and socioeconomic challenges faced by visual prostheses.
Keywords： neuroprostheses vision eye disease restoration of function rehabilitation
Ningbo Yu, Shirong Wang
Engineering 2019, Volume 5, Issue 1, Pages 164-172 doi: 10.1016/j.eng.2018.11.014
The autonomous exploration and mapping of an unknown environment is useful in a wide range of applications and thus holds great significance. Existing methods mostly use range sensors to generate two-dimensional (2D) grid maps. Red/green/blue-depth (RGB-D) sensors provide both color and depth information on the environment, thereby enabling the generation of a three-dimensional (3D) point cloud map that is intuitive for human perception. In this paper, we present a systematic approach with dual RGB-D sensors to achieve the autonomous exploration and mapping of an unknown indoor environment. With the synchronized and processed RGB-D data, location points were generated and a 3D point cloud map and 2D grid map were incrementally built. Next, the exploration was modeled as a partially observable Markov decision process. Partial map simulation and global frontier search methods were combined for autonomous exploration, and dynamic action constraints were utilized in motion control. In this way, the local optimum can be avoided and the exploration efficacy can be ensured. Experiments with single connected and multi-branched regions demonstrated the high robustness, efficiency, and superiority of the developed system and methods.
Keywords： Autonomous exploration Red/green/blue-depth Sensor fusion Point cloud Partial map simulation Global frontier search
Flexibility analysis and evaluation for joint venture of construction project contractors
Zhao Zhenyu,Yin Yin
Strategic Study of CAE 2008, Volume 10, Issue 9, Pages 84-87
The environmental turbulence evaluation index and flexibility evaluation index of joint venture (JV) were discussed, and corresponding evaluation method was proposed. The flexibility analysis can determine whether the various flexibility status of JV adapts to the competition environment and the internal and external factors. The results can assist to provide advice for the strategies and measures selection and adjust the JV's flexibility, and improve the competitiveness and management level of JV.
Keywords： construction project contractor joint venture flexibility management
Wang Zixi,Ling Jinlan and Song Yanfang
Strategic Study of CAE 2015, Volume 17, Issue 2, Pages 50-58
The felsic rock mass always enrich Cu，Mo，W，Sn，Nb，Ta ，then become an rare and non-ferrous metals deposit.Most of these rock masses are small（area＜10 km2）. High SiO2， K2O， K2O/Na2O are benefit of enriching Mo in the magma which rock mass enriches Cu， Mo；high Al2O3， Fe2O3T， MgO， CaO are benefit of enriching Cu in the magma which rock mass enriches Cu，Mo.High SiO2， K2O are benefit of enriching W in the magma which rock mass enriches W， Sn；high Al2O3， Fe2O3T， MgO， CaO are benefit of enriching Sn in the magma which rock mass enriches W，Sn.High Fe2O3T， alkali，TiO2 and low P2O5 are benefit of enriching in the magma which rock mass enrich Nb， Ta. The enriching Cu of rock mass is S type granite，but the enriching Mo of rock mass is transiting from I type to S type granite；the enriching W， Sn of rock mass is S type granite； the enriching Nb， Ta of rock mass has A type， I type and S type granites.
Keywords： felsic rock mass；rare metal；non-ferrous metal；formation of rock；small rock mass
Development of and Perspective on High-Performance Nanostructured Bainitic Bearing Steel Review
Fucheng Zhang, Zhinan Yang
Engineering 2019, Volume 5, Issue 2, Pages 319-328 doi: 10.1016/j.eng.2018.11.024
Bearings are the most important component of nearly all mechanical equipment, as they guarantee the steady running of the equipment, which is especially important for high-end equipment such as high-speed trains and shield tunneling machines. Requirements regarding the quality of bearings are increasing with the rapid development in technology. A country’s bearings manufacturing level directly reflects the level of that country’s steel metallurgy and machinery manufacturing. The performance of the bearing steel is the critical factor that determines the quality of a bearing. The development of new bearing steel with higher performance is the ambition of material researchers and the expectation of the manufacturing industry. Many famous bearing manufacturing enterprises are competing to develop the new generation of bearing steel. Nanostructured bainitic bearing steel (NBBS), which is a newly developed bearing steel, not only possesses high strength and toughness, but also exhibits excellent wear resistance and rolling contact fatigue (RCF) resistance. In recent years, relevant achievements in NBBS in China have led to significant progress in this field. NBBS was first used in China to manufacture large bearings for wind turbines and heavy-duty bearings, with excellent performance. As a result, NBBS and its corresponding heat-treatment process have been included in the national and industry standards for the first time. The bearing industry considers the exploitation of NBBS to be epoch-making, and has termed this kind of bearing as the second generation of bainitic bearing. In this paper, the development of NBBS is reviewed in detail, including its advantages and disadvantages. Further research directions for NBBS are also proposed.
Keywords： Nanostructured bainitic bearing steel Bearing steel Nanostructured bainite Development
Design of Hygroscope for Tongue Moisture
Jia Guixi,Pei Xiaona,Kang Yingpeng,Zhu Kai
Strategic Study of CAE 2007, Volume 9, Issue 4, Pages 41-44
In traditional Chinese medicine, tongue moisture plays an important role in tongue diagnosis. However, there are still some problems in conventional measurement. Therefore, a hygroscope, which uses digital humidity and temperature sensor, was developed to test tongue moisture based on mass transfer means. This paper presents its testing principle and the design method of its hardware and software. This hygroscope finds itself with some attractive features, such as portability, handy operation, low power consumption, etc. It has been proved that the standard deviation of this tester, only 2.9%, is better than that of other conventional instruments, and the tongue moisture could be measured rapidly and accurately.
Keywords： tongue moisture mass transfer digital humidity temperature sensor
δ-TRIP steel：Physical and mechanical metallurgy
Yi Hongliang,Chen Peng,Wang Guodong and Ma Mingtu
Strategic Study of CAE 2014, Volume 16, Issue 2, Pages 18-30
δ- transformation induced plasticity（TRIP） steel has performed high strength combined with excellent ductility，which satisfy the requirements for the third generation advance steels for automotive application. In addition，it could to be spot welded. It’s high potential to be industrialized for both manufacture and automotive application. The development of δ-TRIP，microstructure and mechanical properties，transformation and microstructure evolution，strength and toughness mechanism will be reviewed. The process and physical metallurgy for resistance spot welding will be discussed as well.
Keywords： TRIP- steel δ- ferrite bainitic transformation microstructural evolution mechanical properties
Some Thoughts of Chinaese Integrated Space - Ground Network System
Shen Rongjun
Strategic Study of CAE 2006, Volume 8, Issue 10, Pages 19-30
The rapid development of terrestrial network technologies and the increasing complexity of space missions have generated a strong demand to extend the internet to space and to establish an integrated space-ground network system, and technologies today have already provided feasibility for doing so. The current situation in China is that space-ground protocols are not unified for different spacecraft in spaceflight missions. Space mission data can not be shared and the integrated data utilization ratio is still low. This paper analyzes the demand of future space missions and demonstrates the significance for China to develop its integrated space-ground network system. Status quo of space-based network system abroad is introduced. A concept on the overall objective, composition, network system architecture, and network protocols is proposed. Some key technologies are analyzed. Finally, suggestions are given regarding the steps of development.
Keywords： integrated space network system architecture network protocols steps of program development
Coach-assisted multi-agent reinforcement learning framework for unexpected crashed agents Research Article
Jian ZHAO, Youpeng ZHAO, Weixun WANG, Mingyu YANG, Xunhan HU, Wengang ZHOU, Jianye HAO, Houqiang LI
Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 7, Pages 1032-1042 doi: 10.1631/FITEE.2100594
Keywords： Multi-agent system Reinforcement learning Unexpected crashed agents
Title Author Date Type Operation
GPU-based multi-slice per pass algorithm in interactive volume illumination rendering
Dening Luo, Yi Lin, Jianwei Zhang,onexinoneyi@hotmail.com,Yilin@scu.edu.cn,zhangjianwei@scu.edu.cn
Journal Article
A virtual 3D interactive painting method for Chinese calligraphy and painting based on real-time force feedback technology
Chao GUO, Zeng-xuan HOU, You-zhi SHI, Jun XU, Dan-dan YU
Journal Article
The Formation of Tetraploid Hybrids of Common Carp with Red Crucian Carp and the Evolutionary Significance of Tetraploidization in Vertebrate
Liu Shaojun,Cao Yunzhang,He Xiaoxiao,Li Jianzhong,Liu Yun
Journal Article
The Mechanics of 3D Multi-body Contact System of Long Shell and Tyres
Liang Xiaoling,Xiao Yougang,Li Xuejun
Journal Article
Ionic Elastomers for Electric Actuators and Sensors
Chenrun Feng, C.P. Hemantha Rajapaksha, Antal Jákli
Journal Article
Enhanced Autonomous Exploration and Mapping of an Unknown Environment with the Fusion of Dual RGB-D Sensors
Ningbo Yu, Shirong Wang
Journal Article
Flexibility analysis and evaluation for joint venture of construction project contractors
Zhao Zhenyu,Yin Yin
Journal Article
Compared and analyzed the petrology and geochemistry of felsic rock mass enriches rare and non-ferrous metals
Wang Zixi,Ling Jinlan and Song Yanfang
Journal Article
Development of and Perspective on High-Performance Nanostructured Bainitic Bearing Steel
Fucheng Zhang, Zhinan Yang
Journal Article
δ-TRIP steel：Physical and mechanical metallurgy
Yi Hongliang,Chen Peng,Wang Guodong and Ma Mingtu
Journal Article
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