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LTE系统中采用干扰消除技术的TDOA定位方法

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高技术通讯 2012年第6期22卷 566-570页

作者：赵军辉赵聪束锋北京交通大学电子信息工程学院北京100044 北京邮电大学电子工程学院北京100876 南京理工大学电子工程与光电技术学院南京210094 东南大学移动通信国家重点实验室南京210096

为长期演进计划（LTE）通信系统提出了一种采用干扰消除技术来改进信号到达时间差（TDOA）的移动台定位方法。该方法针对移动台在靠近小区中心时接收邻近小区基站信号会受到服务基站和其他基站信号以及噪声的干扰，从而导致定位精度下... 详细信息

为长期演进计划（LTE）通信系统提出了一种采用干扰消除技术来改进信号到达时间差（TDOA）的移动台定位方法。该方法针对移动台在靠近小区中心时接收邻近小区基站信号会受到服务基站和其他基站信号以及噪声的干扰，从而导致定位精度下降的情况，首先在信号接收端重建干扰并且从接收信号中对其进行消除，然后基于正交频分复用（OFDM）通信系统使用相关估计法估算信号传播时间，最后通过加权最小二乘法估算移动台的位置坐标。在多径传播以及非视距（NLOS）传播无线环境中，仿真实验证明，采用该方法可以有效改善靠近小区中心的移动台的定位精度。

关键词：无线定位到达时间差(TDOA) 干扰消除非视距(NLOS)

Encrypted optical fiber tag based on encoded fiber Bragg grating array

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International Journal of Extreme Manufacturing 2023年第3期5卷 658-665页

作者： Zhihao Cai Bozhe Li Zhiyong Bai Dejun Liu Kaiming Yang Bonan Liu cong zhao Mengqiang Zou Jie Zhou Shangben Jiang Jingyi Huang Li Liu Xuming Zhang Junle Qu Yiping Wang Changrui Liao Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things Guangdong and Hong Kong Joint Research Centre for Optical Fibre SensorsState Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhen 518060People’s Republic of China Shenzhen Key Laboratory of Ultrafast Laser Micro/Nano Manufacturing Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Guangdong Laboratory of Artificial Intelligence and Digital Economy(SZ) Shenzhen 518107People’s Republic of China Department of Electronic Engineering Chinese University of Hong KongHong KongPeople’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityHongKongPeople’sRepublic of China

Optical fibers are typically used in telecommunications services for data transmission,where the use of fiber tags is essential to distinguish between the different transmission fibers or channels and thus ensure the working functionality of the communication *** physical entity marking methods for fiber labeling are bulky,easily confused,and,most importantly,the label information can be accessed easily by all potential *** work proposes an encrypted optical fiber tag based on an encoded fiber Bragg grating(FBG)array that is fabricated using a point-by-point femtosecond laser pulse chain inscription *** with different resonant wavelengths and reflectivities are realized by adjusting the grating period and the refractive index *** is demonstrated that a binary data sequence carried by a fiber tag can be inscribed into the fiber core in the form of an FBG array,and the tag data can be encrypted through appropriate design of the spatial distributions of the FBGs with various reflection wavelengths and *** proposed fiber tag technology can be used for applications in port identification,encrypted data storage,and transmission in fiber networks.

关键词： fiber Bragg grating femtosecond laser micromachining encrypted information optical fiber tag

Hydrogen sulfide donor regulates alveolar epithelial cell apoptosis in rats with acute lung injury

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Chinese Medical Journal 2013年第3期126卷 494-499页

作者： LIU Wen-li LIU Zhi-wei LI Tian-shui WANG cong zhao Bin Department of Emergency Medicine Beijing Jishuitan Hospital Beijing 100035 China

Background Acute lung injury （ALI） is a common syndrome associated with high morbidity and mortality in emergency medicine. Cell apoptosis plays a key role in the pathogenesis of ALl. Hydrogen sulfide （H2S） plays a protective role during acute lung injury. We designed this study to examine the role of H2S in the lung alveolar epithelial cell apoptosis in rats with ALl. Methods Sixty-nine male Sprague Dawley rats were used. ALI was induced by intra-tail vein injection of oleic acid （OA）. NariS solution was injected intraperitonally 30 minutes before OA injection as the NariS pretreatment group. Single sodium hydrosulfide pretreatment group and control group were designed. Index of quantitative assessment （IQA）, wet/dry weight （W/D） ratio and the percentage of polymorphonuclear leukocyte （PMN） cells in the bronchoalveolar lavage fluid （BALF） were determined. H2S level in lung tissue was measured by a sensitive sulphur electrode. Apoptosis was evaluated by terminal deoxynucleotidyl transferase dUTP nick end labeling （TUNEL） staining and Fas protein was measured by immunohistochemical staining. Results The level of endogenous H2S in lung tissue decreased with the development of ALl induced by OA injection. Apoptosis and Fas protein in alveolar epithelial cells increased in the ALl of rats but NariS lessened apoptosis and Fas protein expression in alveolar epithelial cells of rats with ALl. Conclusion Endogenous H2S protects rats from oleic acid-induced ALl, probably by inhibiting cell apoptosis.

关键词： hydrogen sulfide acute lung injury cell apoptosis

Evidence of cortical reorganization of language networks after stroke with subacute Broca's aphasia:a blood oxygenation level dependent-functional magnetic resonance imaging study

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Neural Regeneration Research 2017年第1期12卷 109-117页

作者： Wei-hong Qiu Hui-xiang Wu Qing-lu Yang Zhuang Kang zhao-cong Chen Kui Li Guo-rong Qiu Chun-qing Xie Gui-fang Wan Shao-qiong Chen Department of Rehabilitation Medicine the Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Radiology the Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

Aphasia is an acquired language disorder that is a common consequence of *** pathogenesis of the disease is not fully understood,and as a result,current treatment options are not ***,we used blood oxygenation level-dependent functional magnetic resonance imaging to evaluate the activation of bilateral cortices in patients with Broca＇s aphasia 1 to 3 months after *** results showed that language expression was associated with multiple brain regions in which the right hemisphere participated in the generation of *** activation areas in the left hemisphere of aphasia patients were significantly smaller compared with those in healthy *** activation frequency,volumes,and intensity in the regions related to language,such as the left inferior frontal gyrus（Broca＇s area）,the left superior temporal gyrus,and the right inferior frontal gyrus（the mirror region of Broca＇s area）,were lower in patients compared with healthy *** contrast,activation in the right superior temporal gyrus,the bilateral superior parietal lobule,and the left inferior temporal gyrus was stronger in patients compared with healthy *** results suggest that the right inferior frontal gyrus plays a role in the recovery of language function in the subacute stage of stroke-related aphasia by increasing the engagement of related brain areas.

关键词： nerve regeneration functional magnetic resonance imaging cortical functional connectivity language regions neuroplasticity Perisylvian language regions brain activation right hemisphere picture-naming task neural regeneration

动态信道切换及静默策略下的LTE-U共存方案

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北京邮电大学学报 2017年第4期40卷 16-22页

作者：申滨赵思聪重庆邮电大学移动通信技术重点实验室重庆400065

提出了一种针对非授权频段的长期演进(LTE-U)系统在5 GHz非授权频段与WIFI系统共存的方案.该方案基于先听后说(LBT)信道接入机制,通过引入动态信道切换技术,有效避免了因LTE-U系统长时间占用同一信道而对无线保真(WIFI)系统造成的干扰.... 详细信息

提出了一种针对非授权频段的长期演进(LTE-U)系统在5 GHz非授权频段与WIFI系统共存的方案.该方案基于先听后说(LBT)信道接入机制,通过引入动态信道切换技术,有效避免了因LTE-U系统长时间占用同一信道而对无线保真(WIFI)系统造成的干扰.在此基础上,对LBT机制中的静默时长进行了优化,以进一步提升LTEU与WIFI系统共存的效率.理论分析和实验结果表明,所提方案可使LTE-U与WIFI在同频段和谐共存,并取得较好的系统性能.

关键词：非授权频段的长期演进先听后说共存方案信道接入机制

Challenges and strategies in progress of drug delivery system for traditional Chinese medicine Salviae Miltiorrhizae Radix et Rhizoma(Danshen)

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Chinese Herbal Medicines 2021年第1期13卷 78-89页

作者： Ruo-ning Wang Hua-cong zhao Jian-yu Huang Hong-lan Wang Jun-song Li Yin Lu Liu-qing Di School of Pharmacy Nanjing University of Chinese MedicineNanjing 210046China Jiangsu Engineering Research Center for Efficient Delivery System of TCM Nanjing 210046China Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica Nanjing 210046China

Traditional Chinese medicines(TCMs), with a history of thousands of years, are widely used clinically with effective treatment. However, the drug delivery systems(DDSs) for TCMs remains major challenges due to the characteristics of multi-components including alkaloids, flavones, anthraquinones, glycosides,proteins, volatile oils and other types. Therefore, the novel preparations and technology of modern pharmaceutics is introduced to improve TCM therapeutic effects due to instability and low bioavailability of active ingredients. Salviae Miltiorrhizae Radix et Rhizoma, the radix and rhizomes of Salvia miltiorrhiza Bunge(Danshen in Chinese), is a well known Chinese herbal medicine for protecting the cardiovascular system, with active ingredients mainly including lipophilic tanshinones and hydrophilic salvianolic *** this review, this drug is taken as an example to present challenges and strategies in progress of DDSs for TCMs. This review would also summary the characteristics of active ingredients in it including physicochemical properties and pharmacological effects. The purpose of this review is to provide inspirations and ideas for the DDSs designed from TCMs by summarizing the advances on DDSs for both singleand multi-component from Danshen.

关键词： active ingredients challenges and strategies drug delivery systems Salvia miltiorrhiza Bunge Salviae Miltiorrhizae Radix et Rhizoma traditional Chinese medicines

明清俗语辞书的范围及其所录俗语词的特点与研究意义

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烟台大学学报（哲学社会科学版） 2012年第1期25卷 114-118页

作者：曾昭聪暨南大学文学院广东广州510632

明清俗语辞书的范围可以认定为明清时期(兼及民国)编纂的记录并诠释较通行的一般性的汉语方言俗语或俗语词的辞书;明清俗语辞书收录的"俗语"可以分为"熟语"和"俗语词"两类,俗语词即比较通行的一般性的方言俗语中俚俗性质较重的口语词;... 详细信息

明清俗语辞书的范围可以认定为明清时期(兼及民国)编纂的记录并诠释较通行的一般性的汉语方言俗语或俗语词的辞书;明清俗语辞书收录的"俗语"可以分为"熟语"和"俗语词"两类,俗语词即比较通行的一般性的方言俗语中俚俗性质较重的口语词;明清俗语辞书所录俗语词具有口语性与俚俗性、同时代性、丰富性的特点;对明清俗语辞书所录俗语词进行研究可以拓宽近代汉语词汇研究的领域,可以为汉语词汇史等多方面的研究提供丰富的语料和有益的前期研究成果,对今日权威语文辞书的编纂也有着重要意义。

关键词：明清俗语辞书范围俗语词特点意义