Pub Date : 2016-05-01DOI: 10.3969/j.issn.0253-2778.2016.05.007
R. Escribano
{"title":"τ K s π - v τ and τ K - ηV τ decays: A combined analysis","authors":"R. Escribano","doi":"10.3969/j.issn.0253-2778.2016.05.007","DOIUrl":"https://doi.org/10.3969/j.issn.0253-2778.2016.05.007","url":null,"abstract":"","PeriodicalId":17548,"journal":{"name":"Journal of University of Science and Technology of China","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78931802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-01-01DOI: 10.3969/J.ISSN.0253-2778.2014.05.010
Bo Yao, Xiaoyan Li, Yuwen Ruan, P. Zhou
{"title":"Post stroke examination with evoked and voluntary surface EMG: A study with hypothenar muscles","authors":"Bo Yao, Xiaoyan Li, Yuwen Ruan, P. Zhou","doi":"10.3969/J.ISSN.0253-2778.2014.05.010","DOIUrl":"https://doi.org/10.3969/J.ISSN.0253-2778.2014.05.010","url":null,"abstract":"","PeriodicalId":17548,"journal":{"name":"Journal of University of Science and Technology of China","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89060905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Diffraction limit is always a key point to almost all optical systems, and diffraction effect is mostly dependent on the numerical aperture of objective and wavelength of light. However, it will be ultimately limited to improve the resolution continuously by increasing the numerical aperture or reducing the wavelength. Here, it is introduced that when these two parameters are fixed, focal spot smaller than Airy pattern could be obtained by means of superresolution techniques. Theoretical analysis for superresolution is presented. Binary phase plates corresponding to transverse or axial superresolution are designed, especially three-dimensional superresolution is proposed employing some optimization algorithms. The simulation results show that for light source with single wavelength or narrow spectral width, superresolution effects are fine, and when the superresolved phase plates are applied to femtosecond laser microfabrication system, the superresolution performances are even better when two-photon absorption is considered. Finally, the influences of spectrum of light sources are discussed. It has been demonstrated that when the spectral width is narrow, the performance of superresolved phase plates is approximately the same as that of a single wavelength. In conclusion, the superresoloved phase plates can be successfully applied to femtosecond laser systems for microfabrication, data memory and et al.
{"title":"Design of superresolved phase plates","authors":"Youhua Tan, Rui Guo, Shizhou Xiao, G. Cheng, Wenhao Huang, Precision Instrumentation","doi":"10.2961/JLMN.2006.03.0025","DOIUrl":"https://doi.org/10.2961/JLMN.2006.03.0025","url":null,"abstract":"Diffraction limit is always a key point to almost all optical systems, and diffraction effect is mostly dependent on the numerical aperture of objective and wavelength of light. However, it will be ultimately limited to improve the resolution continuously by increasing the numerical aperture or reducing the wavelength. Here, it is introduced that when these two parameters are fixed, focal spot smaller than Airy pattern could be obtained by means of superresolution techniques. Theoretical analysis for superresolution is presented. Binary phase plates corresponding to transverse or axial superresolution are designed, especially three-dimensional superresolution is proposed employing some optimization algorithms. The simulation results show that for light source with single wavelength or narrow spectral width, superresolution effects are fine, and when the superresolved phase plates are applied to femtosecond laser microfabrication system, the superresolution performances are even better when two-photon absorption is considered. Finally, the influences of spectrum of light sources are discussed. It has been demonstrated that when the spectral width is narrow, the performance of superresolved phase plates is approximately the same as that of a single wavelength. In conclusion, the superresoloved phase plates can be successfully applied to femtosecond laser systems for microfabrication, data memory and et al.","PeriodicalId":17548,"journal":{"name":"Journal of University of Science and Technology of China","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82817940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new cross-layer adaptive resource allocation scheme for real-time services under a time-varying fading wireless communication system was proposed,in considevation of not only the random service arrival,limited buffers and QoS requirements at MAC layer,but also the wireless channel characteristics,and end-to-end system performance was improved the thanks to adaptive process.The algorithm(CLARA) was composed of two parts:adaptive scheduling and adaptive subcarrier-power allocation.The adaptive scheduling controlled the order in which packets from different users were served according to traffic QoS requirements,such as packet delay,buffer status as well as CSI.The second part dynamically allocated subcarriers and the corresponding transmission power to users according to scheduling results,traffic QoS requirements,such as BER and the BS power constraint.Thus,the system performance could be improved by sufficient exploiting of time diversity,frequency diversity and multiuser diversity.Simulation results show that the CLARA algorithm has about 7dB gain when the throughput,which was defined as successfully received packets in a frame,began to stablize compared to fixed subcarrier-power allocation.The performance of normalized packet delay,which was defined as the ratio of total packets delayed in simulation with the total simulation times,was also significantly improved by the algorithm.
{"title":"Cross-layer adaptive wireless resource allocation scheme","authors":"Zhou Wu-yang","doi":"10.1049/cp:20051451","DOIUrl":"https://doi.org/10.1049/cp:20051451","url":null,"abstract":"A new cross-layer adaptive resource allocation scheme for real-time services under a time-varying fading wireless communication system was proposed,in considevation of not only the random service arrival,limited buffers and QoS requirements at MAC layer,but also the wireless channel characteristics,and end-to-end system performance was improved the thanks to adaptive process.The algorithm(CLARA) was composed of two parts:adaptive scheduling and adaptive subcarrier-power allocation.The adaptive scheduling controlled the order in which packets from different users were served according to traffic QoS requirements,such as packet delay,buffer status as well as CSI.The second part dynamically allocated subcarriers and the corresponding transmission power to users according to scheduling results,traffic QoS requirements,such as BER and the BS power constraint.Thus,the system performance could be improved by sufficient exploiting of time diversity,frequency diversity and multiuser diversity.Simulation results show that the CLARA algorithm has about 7dB gain when the throughput,which was defined as successfully received packets in a frame,began to stablize compared to fixed subcarrier-power allocation.The performance of normalized packet delay,which was defined as the ratio of total packets delayed in simulation with the total simulation times,was also significantly improved by the algorithm.","PeriodicalId":17548,"journal":{"name":"Journal of University of Science and Technology of China","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74285198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2003-01-01DOI: 10.4028/0-87849-977-6.501
Wang Yong
Based on the differential confocal microscopy method, a nonscanning 3D profile detecting system is presented. In the detecting system, a 2D light source array produced by the microoptic component is used to form a parallel microconfocal system. Wholefield detection of the measuring plane is realized simultaneously. In the system the reflected light beam was divided into two paths, and two CCD cameras detected the facula array synchronistically in a differential arrangement. Because the differential arithmetic of facula intensity is used, the noise and the shift of light source can be restrained effectively. By means of the linearity characteristic of the differential confocal system, the high axial resolution is achieved at a larger sampling interval. The measuring efficiency and accuracy are increased simultaneously. The experment result proved the reliability of the detecting system.
{"title":"3-D Profile Parallel Detecting System Based on Differential Confocal Microscopy","authors":"Wang Yong","doi":"10.4028/0-87849-977-6.501","DOIUrl":"https://doi.org/10.4028/0-87849-977-6.501","url":null,"abstract":"Based on the differential confocal microscopy method, a nonscanning 3D profile detecting system is presented. In the detecting system, a 2D light source array produced by the microoptic component is used to form a parallel microconfocal system. Wholefield detection of the measuring plane is realized simultaneously. In the system the reflected light beam was divided into two paths, and two CCD cameras detected the facula array synchronistically in a differential arrangement. Because the differential arithmetic of facula intensity is used, the noise and the shift of light source can be restrained effectively. By means of the linearity characteristic of the differential confocal system, the high axial resolution is achieved at a larger sampling interval. The measuring efficiency and accuracy are increased simultaneously. The experment result proved the reliability of the detecting system.","PeriodicalId":17548,"journal":{"name":"Journal of University of Science and Technology of China","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78720742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：