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Handover with resource pre-allocation in the OFDMA systems

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The Journal of China Universities of Posts and Telecommunications 2007年第4期14卷 27-31,52页

作者： li ming-ju xu Ning WANG Ying ZHANG Ping Key Laboratory of Universal Wireless Communications (Beijing University ofPosts and Telecommunications) Ministry of Education Wireless TechnologyInnovation Institute Beijing 100876. China

This article proposed a new handover algorithm for beyond the third generation （B3G） systems with an orthogonal frequency division multiple access （OFDMA） downlink. In the proposed algorithm, handover mobile termination （MT） chooses a subchannel set in the candidate cells by a subchannel booking rule, based on the terminal speed and the subchannel＇s channel state information （CSI）. Moreover, the handover decision is made after analyzing if at least one candidate cell can reserve the subchannel set for the handover user. Simulation results show that the algorithm reduces the number of handovers and guarantees the quality of service （QoS） for the handover users. It yields better system performance in the OFDMA systems.

关键词： handover OFDMA resource preallocation subchannel booking rule CSI

Machine learning for semiconductors

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Chip 2022年第4期1卷 66-81页

作者： Duan-Yang liu li-ming xu xu-Min lin Xing Wei Wen-Jie Yu Yang Wang Zhong-ming Wei State Key Laboratory of Superlattices and Microstructures Institute of Semicon-ductorsChinese Academy of SciencesBeijing 100083China Computer Net-work Information Center Chinese Academy of SciencesBeijing 100083China College of Mathematics and Physics Beijing University of Chemical Technol-ogyBeijing 100029China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChi-nese Academy of SciencesShanghai 200050China Center of Materials Sci-ence and Optoelectronics Engineering University of Chinese Academy of Sci-encesBeijing 100049China

Thanks to the increasingly high standard of electronics,the semiconductor material science and semiconductor manufacturing have been booming in the last few decades,with massive data accumulated in both *** analyzed effectively,the data will be conducive to the discovery of new semiconductor materials and the development of semicondulctor ***,machine learning,as a fast-growing tool from computer science,is expected to significantly speed up the data *** recently years,many researches on machine learning study of semiconductor materials and semiconductor manufacturing have been *** article is aimed to introduce these progress and present some prospects in this field.

关键词： learning massive manufacturing

Relation Between Endodormancy Induction and Changes in Two Main Electron Transport Pathways of Nectarine Buds

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Agricultural Sciences in China 2008年第10期7卷 1203-1209页

作者： YU Qin GAO Dong-sheng xu Xiao-ming li Jin xu Chen-shan State Key Laboratory of Crop Biology College of Horticulture Science and Engineering Shandong Agricultural University Tai＇an271018. P.R.China

Operation regulations of two main electron transport pathways in nectarine （Prunus persica var. nectariana cv. Shuguang） buds during endodormancy induction were studied to understand possible roles which two main electron transport pathways played in the buds of deciduous fruit trees during endodormancy induction. Respiratory inhibitors （KCN and SHAM） were used to investigate total respiration rate （Vt）, the development and operation of the alternative pathway and partitioning of electrons between the cytochrome and alternative pathways in nectarine buds during endodormancy induction. Results indicated that changes of Vt in flower and leaf buds showed single and double hump-shaped curves, respectively. In endodormancy induction, the capacity （Valt,） and activity （ρValt） of the alternative pathway rapidly increased, but changes of them had different patterns during the entire measuration. At the same time, changes of engagements of the alternative （ρValt/Vt） and cytochrome pathway （ρ′Vcyt/Vt） were opposite, and ρ′Vcyt/Vt was always further higher than ρValt/Vt during the entire measuration. All these results indicated that the development and operation of the alternative pathway played important roles in endodormancy induction, but the cytochrome pathway was the main pathway for mitochondrial electron transport in buds during endodormancy induction.

关键词： nectarine buds endodormancy induction cytochrome pathway alternative pathway

Integrated Chinese and Western medicine in the treatment of a patient with podocyte infolding glomerulopathy:A case report

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World Journal of Clinical Cases 2023年第19期11卷 4684-4691页

作者： Mei-Ying Chang Yu Zhang ming-xu li Fang xuan Department of Nephrology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing 100091China Department of Nephrology First Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People’s Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney Disease ResearchBeijing 100853China

BACKGROUND Podocyte infolding glomerulopathy(PIG)is a newly described and rare glomerular *** date,only approximately 40 cases have been reported *** SUMMARY A 26-year-old female patient presented to our hospital with a complaint of intermittent edema of both lower limbs over the past 2 *** patient was diagnosed with *** was prescribed corticosteroid therapy in other hospitals during the initial stage,to which she had responded poorly and had developed femoral head ***,we administered immunosuppressants,reninangiotensin system inhibitors,combined with traditional Chinese *** patient was followed for 1 year,during which her clinical condition *** Integrated Chinese and Western medicine may be effective for PIG treatment,which requires active intervention to improve prognosis.

关键词： Corticosteroid therapy Immunosuppressive agents Podocyte-infolding glomerulopathy Renin-angiotensin system Traditional Chinese medicine Case report

Shaped beam pattern synthesis with desired nulling level and minimum sidelobe level

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Journal of Electronic Science and Technology 2023年第1期21卷 35-45页

作者： li-ming xu Qiang-Jian Song Shi-Wen Lei Bo Chen Jing Tian Hao-Quan Hu Southwest China Research Institute of Electronic Equipment Chengdu610000China School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu611731China School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China

For the anti-interference/denoise purpose,it usually requires minimizing the sidelobe level(SLL)of a wide-beam pattern with a desired low nulling level(NL)in the nulling *** realize such an objective,the shaped-beam pattern synthesis(SBPS)is the most commonly used ***,since the SBPS problem focuses on synthesizing a predetermined beam shape,the minimum SLL via this approach cannot ensure to obtain the maximum power ***,it cannot obtain the lowest SLL with a certain power gain *** on such consideration,this paper tries to further minimize SLL of a wide-beam pattern with a desired low NL nulling region,by solving the power gain pattern synthesis(PGPS)*** PGPS problem selects the array excitation by directly optimizing the power ***,it has the potential to reduce SLL,when achieving the equal mainlobe power gain constraint via *** iterative algorithm which converts the primal optimization problem into convex sub-problems is proposed,resulting in an effective problem-solving *** simulations demonstrate the proposed algorithm can obtain about 10-dB lower SLL than the existing algorithms.

关键词： Array synthesis Minimum sidelobe level(SLL) Nulling level(NL) Pattern synthesis Wide-beam

Obtaining space-based SDO/AIA solar UV and EUV images from ground-based Hαobservations by deep learning

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Research in Astronomy and Astrophysics 2021年第6期21卷 233-240页

作者： Tie liu Ying-Na Su li-ming xu Hai-Sheng Ji Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Jiangsu Urban and Rural Construction College Changzhou 213147China

In this work,we explore the mappings from solar images taken in Hα(6563 A)by the Global Oscillation Network Group(GONG)on the ground to those observed in eight different wavelengths(94,131,171,193,211,304,335 and 1600 A)by SDO/AIA in *** mappings are built by training the conditional Generative Adversarial Networks(cGANs)on datasets with 500 paired images,which are[Hα,AIA94],[Hα,AIA131],[Hα,AIA171],[Hα,AIA193],[Hα,AIA211],[Hα,AIA304],[Hα,AIA335]and[Hα,AIA1600].We evaluate the eight trained cGANs models on validation and test datasets with 154-pair images and 327-pair images,*** model generated fake AIA images match the corresponding observed AIA images well on large-scale structures such as large active regions and *** the small-scale flare loops and filament threads are difficult to *** quantitative comparisons are carried out on the validation and test datasets to score the *** find that the model-generated images in 304 and 1600 A match the corresponding observed images *** exploration suggests that the cGANs are promising methods for mappings between ground-based Ha and space-based EUV/UV images,while some improvements are necessary.

关键词： methods:analytical techniques:image processing Sun:corona Sun:UV radiation

Enhanced methanol oxidation activity of Au@Pd nanoparticles supported on MWCNTs functionalized by MB under ultraviolet irradiation

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Rare Metals 2015年第1期34卷 12-16页

作者： ming-li xu Xi-Kun Yang Ying-Jie Zhang Shu-Biao Xia Peng Dong Guo-Tao Yang Faculty of Science Kunming University of Science and Technology Research Center for Analysis and Measurement Kunming University of Science and Technology Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology

A successful approach to assemble Au core Pd shell （Au@Pd） nanoparticles on the surface of multi-walled carbon nanotubes functionalized by methylene blue （MB）（Au@Pd/fuv-MWCNTs） was reported. In this method, MWCNTs were functionalized under ultraviolet irradiation. UV-Vis analysis and high-angle annular dark-field trans- mission electron microscope （HAADF-TEM） image prove that core-shell structure of Au@Pd nanoparticles forms. TEM results indicate that Au@Pd nanoparticles （ - 5.2 nm） are well-dispersed on the surface of fuv-MWCNTs. X-ray photoelectron spectroscopy （XPS） reveals that ultraviolet irradiation can promote the interaction between Au@Pd nanoparticles and the functional groups on the surface of MWCNTs. Cyclic voltammograms （CV）, chronoampero- grams （CA）, and electrochemical impedance spectroscopy （EIS） results demonstrate that the Au@Pd/fuv-MWCNTs catalysts show excellent electrocatalytic performance for methanol oxidation in alkaline media. The catalytic activity of the Au@Pd/fuv-MWCNTs is ~ 2 times higher than that of the commercial Pd/C catalysts. This is mostly attributed to that ultraviolet irradiation can make the moieties of MB provide a uniform surface with active and anchoring sites, and improves the functional effect of MB on the surface of MWCNTs. Especially, ultraviolet irradiation modifies electronic structure of Pd and is beneficial for the enhance- ment of catalytic activity.

关键词： Au@Pd core-shell nanoparticle Multi-walledcarbon nanotube Methylene blue Electrocatalyst Methanol oxidation Ultraviolet irradiation

Adenomyoma of the distal common bile duct demonstrated by endoscopic ultrasound: A case report and review of the literature

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World Journal of Clinical Cases 2019年第21期7卷 3615-3621页

作者： li-ming xu Duan-Min Hu Wen Tang Shao-Hua Wei Wei Chen Guang-Qiang Chen Department of Gastroenterology The Second Affiliated Hospital of Soochow UniversitySuzhou 215004Jiangsu ProvinceChina Endoscopy Center The Second Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Department of Hepatological Surgery The Second Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Imaging Department The Second Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina

BACKGROUND Adenomyomatous hyperplasia of the distal common bile duct(CBD)is very rare,with only scarce case reports in the *** is usually based on imaging findings,and endoscopic biopsy is very difficult before *** is believed that adenomyomatous hyperplasia has little or no risk of malignant *** SUMMARY A 68-year-old woman with abdominal pain in the right upper quadrant was referred to our *** ultrasonography in the emergency ward revealed acute cholecystitis and dilated *** findings showed elevated levels of transaminases,phosphatase,andγ-*** treatment for 3 d did not relieve the *** resonance cholangiopancreatography(MRCP)and computed tomography(CT)showed proximal bile duct dilatation but could not identify the *** ultrasonography(EUS)demonstrated a mixed echogenic mass in the distal *** surgery,a firm mass was found in the distal CBD and the Whipple procedure was performed with the initial concern of *** showed diffuse adenomyomatous *** EUS may be a useful choice to diagnose adenomyoma of the distal CBD before operation,especially in patients with ambiguous MRCP/CT findings.

关键词： Adenomyoma Common bile duct Endoscopic ultrasound Diagnosis Casereport

Modeling monocular form deprivation in rabbits using a simulated-cataract intraocular lens

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International Journal of Ophthalmology(English edition) 2024年第12期17卷 2177-2184页

作者： Si-Yi Gu li-ming xu Wei-Jie Sun li-li liang Lei lin Han Zou Jing-Yuan xu Yu Zheng Yuan-Yuan li Yin-Ying Zhao Ping-Jun Chang Yun-E Zhao Eye Hospital and School of Ophthalmology and Optometry Wenzhou Medical UniversityWenzhou 325003Zhejiang ProvinceChina The State Key Laboratory of Optometry Ophthalmology and Vision ScienceWenzhou 325003Zhejiang ProvinceChina National Center for Clinical and Medical Research Wenzhou 325003Zhejiang ProvinceChina Eye Hospital of Wenzhou Medical University at Hangzhou Hangzhou 310000Zhejiang ProvinceChina

AIM:To establish an animal model of form deprivation amblyopia based on a simulated cataract intraocular lens(IOLs).METHODS:Poly(dimethyl siloxane)-SiO_(2) thin films(PSF)with different degrees of opacity as IOL materials were *** light transmission of the PSF-IOL was measured,and its in vitro biosafety was determined by cell counting kit(CCK)-8 assay using the HLEC-B3 cell line and ARPE-19 cell ***,the in vivo safety was determined by implanting the PSF-IOL with 10%wt SiO_(2) into the right eyes of New Zealand white rabbits(PSF-IOL group),and compared with two control groups:contralateral comparison group and normal control(NC)group(Contralateral comparison group:the fellow eye;NC group:a group of binocular normal rabbits without intervention).The flash visual-evoked potentials(F-VEPs)were measured to verify ***:PSFs containing 0,2%,and 10%wt SiO_(2) were successfully *** 0 SiO_(2) PSF was transparent,while the 10%wt SiO_(2) PSF was completely *** was found that PSF did not induce unwanted cytotoxicity in HLECs and ARPE19 cells in *** vitro,PSF-IOL with 10%wt SiO_(2) was also non-toxic,and no significant inflammation or structural changes occurred after four weeks of PSF-IOL ***,our IOL-simulated congenital cataract rabbit detected by F-VEPs suggested tentative ***:A PSF-IOL that mimics cataracts is created.A novel form deprivation model is created by the IOL-simulated congenital cataract *** can be developed fast and stable and holds great potential for future study.

关键词： monocular deprivation form deprivation intraocular lens congenital cataract amblyopia