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Multi-Hop Transmission Method of 5G Millimeter Wave Relay Based on Network Coding

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China Communications 2022年第12期19卷 14-26页

作者： Yilin Wang Weisheng He Xuwei Fan Lianfen Huang Jie Yang Yuliang Tang School of Information Xiamen UniversityXiamen 361005China Department of Software Engineering Xiamen Institute of Software TechnologyXiamen 361005China

With the rapid development of the Internet technology,millimeter wave(mmWave)will be used as a supplement to 5G low frequency bands to meet the extremely high system capacity requirements of 5G in hot spots.Although 5G mmWave communication can adapt to the needs of 5G network and carry a large amount of transmitted data,transmission stability has become one of the key technical issues of 5G network mmWave communication due to problems such as strong attenuation and poor penetration of mmWave.In order to improve the efficiency of the mmWave multi-hop transmission,we propose a 5G mmWave multi-hop transmission method based on network coding,which can adapt to the current wireless network environment,improve spectrum efficiency and increase network throughput.Based on MATLAB simulation experiments,it is verified that the proposed method can greatly improve the transmission efficiency and reduce the signal loss under the premise of ensuring the accurate signal transmission.

关键词： 5G network millimeter wave relay multihop communication network coding

Synthesis of Tribolure,the Common Aggregation Pheromone of Four Tribolium Flour Beetles

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中国化学:英文版 2015年第6期33卷 627-631页

作者： Chao Wang Chengyu he Yong Shi Hua Xiang weisheng Tian Department of Medicinal Chemistry School of PharmacyChinese Pharmaceutical UniversityNanjingJiangsu 210009China CAS Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

herein we report a synthesis of the natural tribolure,an aggregation pheromone which consists of(4R,8S)-,(4R,8R)-,(4S,8S)-,and(4S,8R)-4,8-dimethyldecanals in a ratio of 4/4/1/1,from(R)-4-methyl-δ-valerolactone,a by-product of the degradation of steroidal sapogenins.Merging the stereoisomers of the same ratios into one synthetic target and using the same chiron for the construction of the C4 stereocenters are notable features of this synthesis.

关键词： aggregation pheromone tribolure synthesis Tribolium flour beetle (R)-4-methyl-δ-valerolactone

A fewest-turn-and-shortest path algorithm based on breadth-first search

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Geo-Spatial Information Science 2014年第4期17卷 201-207页

作者： Yan ZHOU weisheng WANG Di he Zhe WANG School of Resources and Environment University of Electronic Science and Technology of ChinaChengduP.R.China

Many cognitive studies have indicated that the path simplicity may be as important as its distance travelled.However,the optimality of paths for current navigation system is often judged purely on the distance travelled or time cost,and not the path simplicity.To balance these factors,this paper presented an algorithm to compute a path that not only possesses fewest turns but also is as short as possible by utilizing the breadth-first-search strategy.The proposed algorithm started searching from a starting point,and expanded layer by layer through searching zero-level reachable points until the endpoint is found,and then deleted unnecessary points in the reverse direction.The forward searching and backward cleaning strategies were presented to build a hierarchical graph of zero-level reachable points,and form a fewestturn-path graph(G^(*)).After that,a classic Dijkstra shortest path algorithm was executed on the G^(*) to obtain a fewestturn-and-shortest path.Comparing with the shortest path in Baidu map,the algorithm in this work has less than half of the turns but the nearly same length.The proposed fewest-turn-and-shortest path algorithm is proved to be more suitable for human beings according to human cognition research.

关键词： fewest-turn-and-shortest path breadth-first search hierarchical graph

Large-Scale Renewable Energy Transmission by HVDC: Challenges and Proposals

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Engineering 2022年第12期19卷 252-267页

作者： weisheng Wang Guanghui Li Jianbo Guo State Key Laboratory of the Operation and Control of Renewable Energy and Storage Systems China Electric Power Research InstituteBeijing 100192China

Renewable energy transmission by high-voltage direct current(HVDC)has attracted increasing attention for the development and utilization of large-scale renewable energy under the Carbon Peak and Carbon Neutrality Strategy in China.High-penetration power electronic systems(HPPESs)have gradually formed at the sending end of HVDC transmission.The operation of such systems has undergone profound changes compared with traditional power systems dominated by synchronous generators.New stability issues,such as broadband oscillation and transient over-voltage,have emerged,causing tripping accidents in large-scale renewable energy plants.The analysis methods and design principles of traditional power systems are no longer suitable for HPPESs.In this paper,the mechanisms of broadband oscillation and transient over-voltage are revealed,and analytical methods are proposed for HPPESs,including small-signal impedance analysis and electromagnetic transient simulation.Validation of the theoretical research has been accomplished through its application in several practical projects in north,northwest,and northeast region of China.Finally,suggestions for the construction and operation of the future renewable-energy-dominated power system are put forward.

关键词： Broadband oscillation Future power system HVDC transmission Renewable energy generation Transient over-voltage

U-Pb Zircon and Re-Os Molybdenite Geochronology of the W-Mo Mineralized Region of South Qinling, China, and their Tectonic Implications

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Acta Geologica Sinica(English Edition) 2021年第2期95卷 500-516页

作者： HAN Ke YANG Xingke CHAO Huixia he Hujun RUAN Shiqi GAO Yunfeng ZHANG weisheng ZHU Wei JIN Gang School of Earth Science and Resources Chang an UniversityXi'an 710054China Key Laboratory of West Mineral Resources and Geology Engineering Ministry of Education Chang'an UniversityXi'an 710054China Shaanxi Mineral Resources and Geological Survey Xi'an 710054China

A W-Mo mineralized region is located along the northern margin of the South Qinling tectonic belt of China. WMo mineralization occurs mainly in Cambrian–Ordovician clastic and carbonate rocks, and the ore bodies are structurally controlled by NW–SE-and NNE–SSW-striking faults. Evidence for magmatism in the area is widespread and is dominated by intermediate–felsic intrusives or apophyses, such as the Dongjiangkou, Yanzhiba, Lanbandeng, and Sihaiping granitic bodies. Quartz-vein-type mineralization and fault-controlled skarn-type mineralization dominate the ore systems, with additional enrichment in residual deposits. At present, there are few or insufficient studies on(1) the age of mineralization,(2) the relationship between intermediate–felsic granite and W-Mo mineralization,(3) the source of ore-forming materials, and(4) the metallogenic and tectonic setting of the mineralized area. In this paper, we present geochronology results for numerous intrusive granitic bodies in the South Qinling tectonic belt. U-Pb zircon geochronology of the Lanbandeng monzogranite and Wangjiaping biotite monzogranite yields ages of 222.7 ± 2.3 and 201.9 ± 1.8 Ma, respectively. In contrast to the Late Triassic age of the Lanbandeng monzogranite, the age of the newly discovered Wangjiaping biotite monzogranite places it at the Triassic–Jurassic boundary. Re-Os molybdenite geochronology on the Qipangou W-Mo deposit yielded a model age of 199.7 ± 3.9 Ma, indicating the deposit formed in the early Yanshanian period of the Early Jurassic. Granitoid intrusions in the mineralized area are characterized by composite granite bodies that crystallized at ca. 240–190 Ma. While there were multiple stages of intrusion, most occurred at 210–220 Ma, with waning magmatic activity at 200–190 Ma. The Re-Os age of molybdenite in the region is ca. 200–190 Ma, which may represent a newly discovered period of W-Mo metallogenesis that occurred during the final stages of magmatism. The heat associated with this magmatism drove ore formation and might have p

关键词： U-Pb zircon geochronology Re-Os molybdenite geochronology tungsten-molybdenum mineralized area intracontinental orogeny South Qinling

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大型甲苯歧化与烷基转移技术的实践与思考

化工进展 2018年第3期37卷 832-836页

作者：贺来宾杨卫胜中国石化上海石油化工研究院上海201208

在对二甲苯产品对外依存度、国内市场需求持续增长和装置生产成本竞争等因素影响下,我国新建对二甲苯生产装置的市场欲望强烈,单装置生产规模不断突破。作为对二甲苯联合装置组成部分的甲苯歧化与烷基转移装置处理量不断增加,单套规模已... 详细信息

在对二甲苯产品对外依存度、国内市场需求持续增长和装置生产成本竞争等因素影响下,我国新建对二甲苯生产装置的市场欲望强烈,单装置生产规模不断突破。作为对二甲苯联合装置组成部分的甲苯歧化与烷基转移装置处理量不断增加,单套规模已达300万吨/年,大型化问题不断显现。本文针对不同规模的甲苯歧化与烷基转移装置进行了比较,分析和探讨了300万吨/年或以上规模的装置在大型化过程中面临的关键设备放大、工艺优化节能等问题,提出了单元设备强化、采用甲苯和碳九重芳烃分开处理的组合工艺技术、采用新节能工艺降低能耗等装置优化策略。相关思路的实现有利于解决甲苯歧化与烷基转移装置的大型化问题,使技术大型化的同时,技术竞争力得到同步提升。

关键词：甲苯歧化设备强化组合工艺节能降耗

A Royal Jelly Mixture with Berberine for Dressing Change on a Refractory Skin Ulcer:A Case Report

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Journal of Geriatric Medicine 2021年第2期3卷 1-3页

作者： Weisheng He Mimi Zhou Yue Chen No.2 Department of Geriatrics Hangzhou Wenzhong HospitalHangzhou310000China

It has been reported that a 92-year-old female had got a bruise superficial wound on her right leg one and a half years ago,developing into refractory skin ulcer due to improper management before.A prepared cream,mixed royal jelly with berberine for dressing change,was made on the scene through the crush of berberine tablets,working with fresh royal jelly.Topical dressing change with the cream was done every 3 days,and two months later,such the ulcer became clean and was covered fully with fresh granulation tissue.This kind of cream consists of the ingredients of TCM purely,free of antibiotic,and being quite effective clinically,also helpful for proper use of antibiotic.

关键词： Refractory skin ulcer A mixture of TCM dressing change Proper use of antibiotic

风电基地经特高压直流送出系统换相失败故障(三):送端风电机组暂态过电压抑制措施

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中国电机工程学报 2022年第14期42卷 5079-5088页

作者：李光辉王伟胜何国庆刘纯新能源与储能运行控制国家重点实验室(中国电力科学研究院有限公司) 北京市海淀区100192

特高压直流(ultra high voltage direct current,UHVDC)换相失败故障引发送端风电机组暂态过电压,威胁风电机组的安全稳定运行,亟需对风电机组暂态过电压抑制措施开展研究。首先,该文结合系列文章第2篇风电机组暂态无功电压特性与作用... 详细信息

特高压直流(ultra high voltage direct current,UHVDC)换相失败故障引发送端风电机组暂态过电压,威胁风电机组的安全稳定运行,亟需对风电机组暂态过电压抑制措施开展研究。首先,该文结合系列文章第2篇风电机组暂态无功电压特性与作用机理分析,提出计及虚拟磁链的直驱风电机组(permanent magnet synchronous generator,PMSG)控制策略,以抑制机组在UHVDC换相失败故障下的暂态过电压。通过修正PMSG机组网侧变流器(grid side converter,GSC)电流环无功电流参考值,建立了计及虚拟磁链的机组暂态无功解析模型,并验证了模型的准确性;其次,综合考虑系列文章第2篇分析的电压分量暂态吸收无功功率特性,优化电压分量暂态无功控制器参数,实现PMSG机组暂态无功优化设计,提升机组在UHVDC换相失败故障中的暂态过电压抑制能力;最后,依托系列文章第1篇控制硬件在环实时仿真实验平台,验证了该文提出的计及虚拟磁链的PMSG暂态过电压抑制与参数优化方法的有效性。

关键词：直驱风电机组虚拟磁链暂态无功优化暂态过电压抑制

An Introduction of the Vaporized Therapy with Tea herb Drink for Relieving Agitation due to Pulmonary Encephalopathy

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Journal of Geriatric Medicine 2021年第2期3卷 27-30页

作者： Jianbo Hong Mimi Zhou Weisheng He Yue Chen No.2 Department of Geriatrics Hangzhou Wenzhong HospitalHangzhou310000China

What methods would you choose apart from increasing sedatives for agitation in an advanced patient with hypercapnic encephalopathy due to AECOPD?This is a 94-year-old female who suffered from COPD for over 30 years,occurred with an accelerated episode of cough,productive sputum and a dropping down to 86%in SatO₂due to a cold weather.A diagnosis of pulmonary encephalopathy(PE)was made on the basis of the subsequent agitation and delirium,and the sedatives,such as quatiepine and haloperidol,had to be given for her mental excitation respectively,but she still pulled out indwelling needle herself and refused to any infusion therapy.As an alternative,a vaporized therapy integrated with tea herb drinking had to be applied to relieving her agitation,being designed as the vaporization of the inhaled oxygenation by means of high-flow oxygenation device(HFOD),with an ampoule of ambroxol mixed into the inhaler and simultaneous drinking of TCM tea herb for reducing sputum,helping dissolve the mucoid bolts inside her terminal bronchioles when being infected.We thought that a better efficacy would be achieved for hypercapnic encephalopathy due to AECOPD if we concentrate on a good ventilation of small airway through the vaporized therapy.

关键词： Vaporized therapy Tea herb drink Pulmonary encephalopathy(PE)agitation Mucoid bolts Reducing sputum