The design, analysis and parallel implementation of particle filter(PF) were investigated. Firstly, to tackle the particle degeneracy problem in the PF, an iterated importance density function(IIDF) was proposed, wher...The design, analysis and parallel implementation of particle filter(PF) were investigated. Firstly, to tackle the particle degeneracy problem in the PF, an iterated importance density function(IIDF) was proposed, where a new term associating with the current measurement information(CMI) was introduced into the expression of the sampled particles. Through the repeated use of the least squares estimate, the CMI can be integrated into the sampling stage in an iterative manner, conducing to the greatly improved sampling quality. By running the IIDF, an iterated PF(IPF) can be obtained. Subsequently, a parallel resampling(PR) was proposed for the purpose of parallel implementation of IPF, whose main idea was the same as systematic resampling(SR) but performed differently. The PR directly used the integral part of the product of the particle weight and particle number as the number of times that a particle was replicated, and it simultaneously eliminated the particles with the smallest weights, which are the two key differences from the SR. The detailed implementation procedures on the graphics processing unit of IPF based on the PR were presented at last. The performance of the IPF, PR and their parallel implementations are illustrated via one-dimensional numerical simulation and practical application of passive radar target tracking.展开更多
Playbills, covers, and logo of an opera often reflect the meanings of the drama. This paper focuses on above mentioned issues with reference to Dracula, the rock opera of Italian band PFM （Premiata Forneria Marconi）...Playbills, covers, and logo of an opera often reflect the meanings of the drama. This paper focuses on above mentioned issues with reference to Dracula, the rock opera of Italian band PFM （Premiata Forneria Marconi）, explaining how every visual aspects （also considering scenography and costumes） are closely linked to libretto and music to show the consistency among the different facets of the opera production. In this procedure, graphic artists and designers confirm their knowledge, but apart from this awareness, there are some symptoms of an tmconscious creativity as much coherent. As a result, this study aims to show how the management of the biggest colossal in the history of rock opera tries--constantly torn between art and advertising--to attract a potential audience by means of the iconography both of the composers and of the most famous vampire in the world.展开更多
基金Project(61372136) supported by the National Natural Science Foundation of China
文摘The design, analysis and parallel implementation of particle filter(PF) were investigated. Firstly, to tackle the particle degeneracy problem in the PF, an iterated importance density function(IIDF) was proposed, where a new term associating with the current measurement information(CMI) was introduced into the expression of the sampled particles. Through the repeated use of the least squares estimate, the CMI can be integrated into the sampling stage in an iterative manner, conducing to the greatly improved sampling quality. By running the IIDF, an iterated PF(IPF) can be obtained. Subsequently, a parallel resampling(PR) was proposed for the purpose of parallel implementation of IPF, whose main idea was the same as systematic resampling(SR) but performed differently. The PR directly used the integral part of the product of the particle weight and particle number as the number of times that a particle was replicated, and it simultaneously eliminated the particles with the smallest weights, which are the two key differences from the SR. The detailed implementation procedures on the graphics processing unit of IPF based on the PR were presented at last. The performance of the IPF, PR and their parallel implementations are illustrated via one-dimensional numerical simulation and practical application of passive radar target tracking.
文摘Playbills, covers, and logo of an opera often reflect the meanings of the drama. This paper focuses on above mentioned issues with reference to Dracula, the rock opera of Italian band PFM （Premiata Forneria Marconi）, explaining how every visual aspects （also considering scenography and costumes） are closely linked to libretto and music to show the consistency among the different facets of the opera production. In this procedure, graphic artists and designers confirm their knowledge, but apart from this awareness, there are some symptoms of an tmconscious creativity as much coherent. As a result, this study aims to show how the management of the biggest colossal in the history of rock opera tries--constantly torn between art and advertising--to attract a potential audience by means of the iconography both of the composers and of the most famous vampire in the world.
