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移动多媒体广播SOFDM系统4M新传输模式

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中国空间科学技术 2012年第1期32卷 43-50页

作者：杨童中国空间技术研究院通信卫星事业部北京100094

借鉴欧洲DVB-H标准对OFDM系统研究新的4k传输模式这一思想,在中国移动多媒体广播SOFDM系统现有的8M和2M传输模式的基础上,提出并设计了一种新的传输模式——4M模式。理论研究表明,4M模式比2M模式具有更高的数据传输率,比8M模式具有更高... 详细信息

借鉴欧洲DVB-H标准对OFDM系统研究新的4k传输模式这一思想,在中国移动多媒体广播SOFDM系统现有的8M和2M传输模式的基础上,提出并设计了一种新的传输模式——4M模式。理论研究表明,4M模式比2M模式具有更高的数据传输率,比8M模式具有更高的频谱利用率,为中国移动多媒体广播SOFDM信道传输体制的拓展与完善问题探索出了一条通用的技术途径。仿真分析表明,4M模式的导频和数据子载波分布合理,信道传输误码性能整体优于欧洲同类标准4k模式。

关键词：移动多媒体广播正交频分复用传输模式参数分析通信卫星

基于遗传算法的SOFDM信道资源动态分配策略

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中国空间科学技术 2010年第4期30卷 23-30,70页

作者：杨童中国空间技术研究院北京100094

对卫星正交频分复用(Satellite Orthogonal Frequency Division Multiplexing,SOFDM)传输体制进行信道资源分配时,采用传统定界分类法存在效率较低,功率资源浪费较大等问题。文中提出一种改进的信道资源动态分配新策略,引入生物遗传算法... 详细信息

对卫星正交频分复用(Satellite Orthogonal Frequency Division Multiplexing,SOFDM)传输体制进行信道资源分配时,采用传统定界分类法存在效率较低,功率资源浪费较大等问题。文中提出一种改进的信道资源动态分配新策略,引入生物遗传算法,对信道传输特性进行适应性评估,按照'优胜劣汰,适者生存'的进化原则对信道子载波频率和功率资源进行有效分配。仿真分析结果表明,新策略获得了优于传统定界分类法的效果,在算法运行时间与传统方法基本相当的情况下,采用生物遗传算法的SOFDM系统能够更加合理地分配系统频率资源,使系统功率资源产生约1dB的增益,并有效降低系统误包率。

关键词：动态信道分配遗传算法子载波分配无线通信卫星正交频分复用

D-scheduler:A scheduler in time-triggered distributed system through decoupling dependencies between tasks and messages

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Science China(Technological Sciences) 2024年第1期67卷 183-196页

作者： yang TingTing ZHANG YuQi YUE FengLai WUNIRI QiQiGe tong Chao School of Computer Science&Engineering Beihang UniversityBeijing 100191China State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijing 100191China National Innovation Center of Intelligent and Connected Vehicles Beijing 100176China

Time-triggered architecture,as a mainstream design of the distributed real-time system,has been successfully applied in the aerospace,automotive and mechanical ***,time-triggered scheduling is a challenging NP-hard *** are few studies that could quickly solve the scheduling problem of large distributed time-triggered *** solve this problem,a communication affinity parameter is defined in this paper to describe the degree of bias of the shaper task towards sending or receiving *** on this,an innovative task-message decoupling model named D-scheduler is built to reduce the computation complexity of the scheduling problem in large-scale ***,we provide mathematical proof that our model is a convex optimization that is easy to solve with existing computational *** experiments substantiate the efficacy of the *** dramatically reduces the scheduling complexity of large-scale real-time systems with a small loss of solving space compared to the federal scheduler.

关键词： time-triggered architecture time-triggered scheduling communication affinity parameter task-message decoupling model

Expression and functional analyses of the mitogen-activated protein kinase (MPK) cascade genes in response to phytohormones in wheat ( Triticum aestivum L.)

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Journal of Integrative Agriculture 2017年第1期16卷 27-35页

作者： YAO Su-fei WANG Yan-xia yang tong-ren HAO Lin LU Wen-jing XIAO Kai College of Agronomy Agricultural University of Hebei Baoding 071001 P.R. China College of Life Sciences Agricultural University of Hebei Baoding 071001 P.R. China Shijiazhuang Academy of Agriculture and Forestry Sciences Shijiazhuang 050041 P.R. China

Mitogen-activated protein kinase （MPK） cascades consist of a set of kinase types （MPKKKs, MPKKs, MPKs） to establish conserved signal-transducing modules mediating plant growth, development as well as responses to internal and external cues. In this study, the expression patterns of six MPKKK, two MPKK, and 11 MPK genes in wheat in responses to external treatments of phytohormones, including naphthylacetic acid （NAA）, abscisic acid （ABA）, 6-benzyladenine （6-BA）, gibber- ellin （GA3）, salisylic acid （SA）, jasmonic acid （JA）, and ethylene （ETH）, were investigated. Expression analysis revealed that several of the MPK cascade genes are responses to the external phytohormone signaling. Of which, TaMPKKKA;3 is induced by 6-BA and NAA while TaMPK4 repressed by ETH, GA3, SA, and JA; TaMPKKKA, TaMPKKKA;3 and TaMPK1 are down-regulated by ETH and GA3whereas TaMPK9 and TaMPK12 repressed by ETH and JA in addition that TaMPK12 also repressed by GA3; TaMPK12;1 is down-regulated by ABA, GA3 and SA while TaMPK17 repressed by all exogenous phytonormones examined. TaMPK4, a MPK type gene previously characterized to mediate tolerance to phosphate （Pi） deprivation, was functionally evaluated for its role in mediation of responses of plants to exogenous GA3, ETH, SA, and JA. Results indicated that overexpression and antisense expression of TaMPK4 in tobacco dramatically modify the growth of seedlings upon treatments of GA3, SA and JA, in which the overexpressors behaved deteriorated growth feature whereas the seedlings with antisense expression of TaMPK4 exhibited improved seedling phenotype. The growth behaviors in lines overexpressing or antisensely expressing TaMPK4 are closely associated with the biomass and the corresponding hormone-associated parameters. These results demonstrated that TaMPK4 acts as a critical player in mediating the phyto- hormone signaling. Our findings have identified the phytohormone-responsive MPK cascade genes in wheat and provided a connection between the phy

关键词： wheat (Triticum aestivum L.) phytohormone mitogen-activated protein kinase (MPK) cascade expression iransgene analysis

Crystal Structure and Catalytic Properties of Tetrakis (4-hydroxyphenyl) Porphyrinato Manganese(Ⅲ) Chloride (MnTHPPCl)

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Chemical Research in Chinese Universities 2007年第4期23卷 384-387页

作者： yang Jun-wei HUANG Xiao-chun LIU Jin-bin CHEN Tie XIANG Jing tong Shan-ling yang Ke-er YAN Yan Department of Chemistry Shantou University Shantou 515063 P. R. China

The crystal structure of meso-tetrakis （4-hydroxyphenyl） porphyrinato manganese chloride （MnTHPPC1） and its supramolecular architecture based on the hydrogen bonds of one counter C1 anion with four hydrogen atoms of four-OH groups from different MnTHPPC1 molecules cooperated by self-assembly of the porphyrin units were first repor-ted. This compound crystallized in the tetragonal space group 14/m with a = 1.39928（7） nm, b = 1.39928（7） nm, c =0.94498（10） nm, V= 1.8503（2） nm^3, and Z =2. As a catalyst, MnTHPPC1 also showed a high catalytic acti-vity in the conversion from 1-naphthylamine （1-NA） to his （4-oxo-benzo-2-cyclohexen-l-yl） amine （BOBCHA） v/a oxidative coupling under mild conditions.

关键词： Crystal structure Metalloporphyrin Catalytic property

中医护理预防髋关节置换术后下肢深静脉血栓的Meta分析

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内蒙古医学杂志 2024年第4期56卷 428-434页

作者：张洪丽顾晨丛杨晓敏魏丽丽杨毅捷胡春娜韩刚杨桐王利春河北省沧州中西医结合医院骨科康复院区河北沧州061000 河北中医学院石家庄050091 承德医学院河北承德067000

目的系统评价髋关节置换术后中医护理预防下肢深静脉血栓形成的临床效果。方法计算机检索PubMed、国家知识基础设施数据库(CNKI)、维普资讯中文期刊服务平台(VIP)、万方学术期刊全文数据库(Wanfang)中关于髋关节置换术后中医护理预防下... 详细信息

目的系统评价髋关节置换术后中医护理预防下肢深静脉血栓形成的临床效果。方法计算机检索PubMed、国家知识基础设施数据库(CNKI)、维普资讯中文期刊服务平台(VIP)、万方学术期刊全文数据库(Wanfang)中关于髋关节置换术后中医护理预防下肢深静脉血栓形成的文献,检索时间为2012—2022年11月。采用Cochrane干预措施系统评价手册(5.1.0版)偏倚风险评估工具对纳入的随机对照研究进行质量评价,运用RevMan5.4软件对纳入文献进行Meta分析。结果纳入11项研究,涉及1087例患者,其中研究组597例,对照组508例。Meta分析结果显示:中医护理下肢深静脉血栓发生率低于常规护理[RR=0.18,95%CI(0.09~0.35),Z=5.03,P0.05)。结论研究结果表明,髋关节置换术后,中医护理对预防下肢深静脉血栓形成有一定效果,且能显著降低纤维蛋白原,但在改善凝血酶原时间和活化部分凝血活酶时间方面,其效果与常规护理相比差异无统计学意义,受纳入范围和纳入研究质量的影响,上述结论尚待更多高质量的试验予以证实。

关键词：中医护理髋关节置换术下肢深静脉血栓 Meta分析凝血功能

Clinical characteristics and prognosis of community-acquired pneumonia in autoimmune disease-induced

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World Journal of Emergency Medicine 2020年第3期11卷 145-151页

作者： Zhong-shu Kuang Yi-lin yang Wei Wei Jian-li Wang Xiang-yu Long Ke-yong Li Chao-yang tong Zhan Sun Zhen-ju Song Department of Emergency Medicine Zhongshan HospitalFudan UniversityShanghai 200032China Department of Pharmacology University of Virginia School of Medicine CharlottesvilleVirginiaUSA

BACKGROUND:Community-acquired pneumonia(CAP)in autoimmune diseases(AID)-induced immunocompromised host(ICH)had a high incidence and poor ***,only a few studies had determined the clinical characteristics of these *** study was to explore the characteristics and predictors of mortality in CAP patients accompanied with AID-induced ***:From 2013 to 2018,a total of 94 CAP patients accompanied with AID-induced ICH,admitted to Emergency Department of Zhongshan Hospital,Fudan University,were enrolled in this *** data and the risk regression estimates of repeated predictors were evaluated by generalized estimating equations(GEEs)*** open-cohort approach was used to classify patient's outcomes into the survival or non-survival ***:The hospital mortality of patients with CAP occurring in AID-induced ICH was 60.64%.No significant differences were found with respect to clinical symptoms and lung images between survival and non-survival groups,while renal insufficiency and dysfunction of coagulation had higher proportions in non-survival patients(P<0.05).Both noninvasive ventilation(NIV)and invasive mechanical ventilation(IMV)were performed more frequently in non-survival group(P<0.05).By the multivariate GEEs analysis,the repeated measured longitudinal indices of neutrophilto-lymphocyte ratio(NLR)(odds ratio[OR]=1.055,95%confidence interval[95%CI]1.025–1.086),lactate dehydrogenase(LDH)(OR=1.004,95%CI 1.002–1.006)and serum creatinine(s Cr)(OR=1.018,95%CI 1.008–1.028),were associated with a higher risk of ***:The CAP patients in AID-induced ICH had a high mortality.A significant relationship was demonstrated between the factors of NLR,LDH,s Cr and mortality risk in these patients.

关键词： Community-acquired pneumonia Immunocompromised hosts Autoimmune disease Prognostic marker

Corrosion Performance of High Strength 15Cr Martensitic Stainless Steel in Severe Environments

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Journal of Iron and Steel Research International 2014年第8期21卷 774-780页

作者： Xiang-hong L Fu-xiang ZHANG Xiang-tong yang Jun-feng XIE Guo-xian ZHAO Yan XUE School of Materials Science and Engineering Xi'an Shiyou University Petroleum Engineering Institute Petrochina Tarim Oilfield Company Xi'an Maurer Petroleum Engineering Laboratory Co.Ltd.

High pressure and high temperature corrosion performance of high strength 15 Cr martensitic stainless steel was studied in different severe environments—live acid（10%HCl＋1.5%HF＋3%HAc＋5.1% corrosion inhibitor）,spent acid and formation water containing *** results show that the corrosion of high strength 15 Cr martensitic stainless steel in live acid is most serious,and the uniform corrosion rate is far greater than those in spent acid and formation water containing CO2 corrosion environments,but all of them can be acceptable for *** corrosion inhibitor displays a good matching ability with the high strength 15 Cr martensitic stainless steel in terms of decreasing the uniform corrosion rate,which changes mainly the anodic process of high strength 15 Cr martensitic stainless *** corrosion potential moves to the positive direction,thus the corrosion current density decreases *** are some different degrees of pitting of high strength 15 Cr martensitic stainless steel after corrosion tests in live acid,spent acid and formation water containing CO2,and the pitting density aggravates significantly and the maximum pit depth decreases in the corrosion sequence.

关键词： high strength 15Cr martensitic stainless steel live acid spent acid CO2 corrosion

From surface to bulk modification: Plasma polymerization of amine-bearing coating by synergic strategy of biomolecule grafting and nitric oxide loading

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Bioactive Materials 2020年第1期5卷 17-25页

作者： tong yang Zeyu Du Hua Qiu Peng Gao Xin Zhao Huaiyu Wang Qiufen Tu Kaiqin Xiong Nan Huang Zhilu yang Key Laboratory of Advanced Technology for Materials of the Education Ministry School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu610031China Department of Biomedical Engineering The Hong Kong Polytechnic UniversityHung HomHong KongChina Institute of Biomedicine and Biotechnology Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China

Integration of two or more biomolecules with synergetic and complementary effects on a material surface can help to obtain multi-functions for various biomedical ***,the amounts of biomolecules integrated and their physiological functions are compromised due to the limited surface anchoring ***,we propose a novel concept of film engineering strategy“from surface to bulk synergetic modification”.This new concept is realized by employing the surface amine groups of plasma polymerized allylamine(PPAm)film for grafting a molecule e.g.,thrombin inhibitor,bivalirudin(BVLD),meanwhile its bulk amine groups is used as a universal depot for storing and releasing therapeutic nitric oxide(NO)gas as supplement to the functions of *** is demonstrated that such a“from surface to bulk synergetic modification”film engineering can impart the modified-substrates with anti-platelet and anti-coagulant dual functions,giving rise to a highly endotheliummimetic thromboresistant *** believe that our research provides a very promising strategy to deliver multifunctional surface versatilely that require NO release in combination with other properties,which will find broad biomedical applications in blood-contacting devices,and et ***,it also provides a brand-new film engineering strategy for tailoring surface multi-functionalities of a wide range of materials.

关键词： Surface chemistry Amine-bearing coating Synergic modification Biomolecule grafting Nitric oxide loading