Although many methods of spatial analysis have been developed for a better understanding and modelling of urban space analysis, there is still a need for exploration of new analytical techniques for modelling urban sp...Although many methods of spatial analysis have been developed for a better understanding and modelling of urban space analysis, there is still a need for exploration of new analytical techniques for modelling urban spaces. Space Syntax models the spatial configurations of urban spaces by using a connectivity graph representation. Such a configuration of space identifies patterns that can be used to study urban structures and human behaviors. This paper tries to present a new methodology to investigate the urban spatial structure by using Space Syntax with the GIS information including land use, buildings’ characteristics and practical evaluations of the potential of the Space Syntax approach with GIS and multivariate analysis technique. Finally we try to offer some recommendations that attempt to improve the identified problems faced in Kitakyushu, Japan.展开更多
In this paper, a binary blazed grating-based polarization independent filter on silicon on insulator （SOI） under full conical incidence is presented. The properties of the grating filter are investigated by rigorous...In this paper, a binary blazed grating-based polarization independent filter on silicon on insulator （SOI） under full conical incidence is presented. The properties of the grating filter are investigated by rigorous coupled-wave analysis. It＇s shown that the filter demonstrates high reflectivity （R 〉 99%） at its resonant wavelength, which stays the same under three different polarization states. It indicates that this grating filter is polarization-independent. The final data shows its polarization-dependent loss （PDL） is only 0.04 dB and the full width at half maximums （FWHMs） of the transverse electric （TE-） and transverse magnetic （TM-） polarized light are 0.24 and 0.46nm, respectively.展开更多
文摘Although many methods of spatial analysis have been developed for a better understanding and modelling of urban space analysis, there is still a need for exploration of new analytical techniques for modelling urban spaces. Space Syntax models the spatial configurations of urban spaces by using a connectivity graph representation. Such a configuration of space identifies patterns that can be used to study urban structures and human behaviors. This paper tries to present a new methodology to investigate the urban spatial structure by using Space Syntax with the GIS information including land use, buildings’ characteristics and practical evaluations of the potential of the Space Syntax approach with GIS and multivariate analysis technique. Finally we try to offer some recommendations that attempt to improve the identified problems faced in Kitakyushu, Japan.
基金Acknowledgements This work was partially supported by the National Natural Science Foundation of China （Grant No. 61177058）, and the National High Technology Research and Development Program of China （No. 2011AA010302）.
文摘In this paper, a binary blazed grating-based polarization independent filter on silicon on insulator （SOI） under full conical incidence is presented. The properties of the grating filter are investigated by rigorous coupled-wave analysis. It＇s shown that the filter demonstrates high reflectivity （R 〉 99%） at its resonant wavelength, which stays the same under three different polarization states. It indicates that this grating filter is polarization-independent. The final data shows its polarization-dependent loss （PDL） is only 0.04 dB and the full width at half maximums （FWHMs） of the transverse electric （TE-） and transverse magnetic （TM-） polarized light are 0.24 and 0.46nm, respectively.
