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通信网络宏观可靠性指标的全代数化算法

电子与信息学报 2005年第8期27卷 1290-1294页

作者：戴伏生毛兴鹏哈尔滨工业大学威海校区信息工程系威海264209

为了更全面和客观地评价宽带大容量通信网络的可靠性能,引入宏观可靠性指标——总容量归一化加权可靠性指标概念,它是把通信容量和链路可靠性参数有机地综合在一起的指标。解决该指标全代数化计算的关键问题是寻找能够算出网络各节点之... 详细信息

为了更全面和客观地评价宽带大容量通信网络的可靠性能,引入宏观可靠性指标——总容量归一化加权可靠性指标概念,它是把通信容量和链路可靠性参数有机地综合在一起的指标。解决该指标全代数化计算的关键问题是寻找能够算出网络各节点之间全部路由的代数化路由算法。研究出一种逻辑代数化网络路由算法,n个节点的网络只需n次矩阵变换运算,就能得到任意节点之间的全部路由。基于新路由算法研究出网络可靠性指标的全代数化算法,它易于编写程序,利用计算机可以很方便地算出通信网络的可靠性指标,解决了总容量归一化加权可靠性指标计算困难问题,且达到实用化程度。利用算例验证了算法的正确性,并对算法的各计算过程进行了详细说明。

关键词：通信网可靠性路由算法通信容量

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多段聚合法制备PE基高性能PE/PP合金

浙江大学学报（工学版） 2005年第4期39卷 534-537页

作者：傅智盛范志强浙江大学高分子科学与工程学系浙江杭州310027

用高效球形Ziegler-Natta催化剂,通过多段气相聚合的方法制备了一系列聚乙烯/聚丙烯(PE/PP)原位合金.该合金为粒径大且分布窄、流动性好、形貌好的球形颗粒,兼具很好的抗冲性能(67.3～143.9 kJ/m2)和很高的弯曲模量(1 233.6～2 633.5 MP... 详细信息

用高效球形Ziegler-Natta催化剂,通过多段气相聚合的方法制备了一系列聚乙烯/聚丙烯(PE/PP)原位合金.该合金为粒径大且分布窄、流动性好、形貌好的球形颗粒,兼具很好的抗冲性能(67.3～143.9 kJ/m2)和很高的弯曲模量(1 233.6～2 633.5 MPa),所设计的三段聚合工艺(预聚、乙烯均聚和丙烯均聚)所制备的PE/PP合金中的丙烯质量分数范围很宽(8.7%～73.6%).试验发现聚合温度、聚合压力以及氢调都能有效地改变PE/PP合金的组成,其中以改变聚合温度最为有效.聚合条件对合金的机械性能也有很大的影响.抗冲强度随聚合温度的下降而下降,随聚合压力的下降而上升;弯曲模量受聚合温度的影响较小,随聚合压力的下降而大幅度的下降.

关键词：多段聚合法制备方法催化剂聚乙烯聚丙烯原位合金孔隙率流动性

Developmental Temporal Patterns and Molecular Network Features in the Transcriptome of Rat Spinal Cord

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Engineering 2021年第11期7卷 1592-1602页

作者： Jian Yang Lili Zhao sheng Yi Fei Ding Yumin Yang Yan Liu Yongjun Wang Mei Liu Chengbin Xue Lian Xu Leilei Gong Xinghui Wang Yu Zhang Bin Yu guo-li Ming Xiaosong Gu Department of Human Anatomy and Histology and Embryology Medical CollegeSoochow UniversitySuzhou 215123China Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityKey Laboratory of Neuroregeneration of Jiangsu and the Ministry of EducationCo-Innovation Center of NeuroregenerationNantong UniversityNantong 226001China Department of Neuroscience Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA

The molecular network features of spinal cord development that are integral to tissue engineering remain poorly understood in placental mammals,especially in terms of their relationships with vital biological processes such as ***,using a large-scale temporal transcriptomic analysis of rat spinal cord from the embryonic stage to adulthood,we show that fluctuating RNA expression levels reflect highly active transcriptional regulation,which may initiate spinal cord *** also demonstrate that microRNAs(miRNAs)and transcriptional factors exhibit a mosaic profile based on their expression patterns,while differential alternative splicing events reveal that alternative splicing may be a driving force for the development of the node of *** study also supports the existence of a negative correlation between innate immunity and intrinsic growth *** modifications appear to perform their respective regulatory functions at different stages of development,while guanine nucleotidebinding protein(G protein)-coupled receptors(including olfactory receptors(ORs))may perform pleiotropic roles in axonal *** study provides a valuable resource for investigating spinal cord development and complements the increasing number of single-cell *** findings also provide a genetic basis for the development of novel tissue engineering strategies.

关键词： Development Gene expression pattern Innate immunity Spinal cord Transcriptome

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塑料在现代汽车上的运用

塑料工业 2007年第B6期35卷 87-89页

作者：岳治国刘安富付世生刘施华中国人民解放军成都军区78606部队

介绍了塑料的特性、塑料在现代汽车上的运用和面对的问题,并提出了对策。

关键词：塑料汽车应用

Minimum Amounts of Extracting Solvent of (A1A2···At-1)/(A2A3···At) Countercurrent Extraction Separation

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Advances in Materials Physics and Chemistry 2015年第8期5卷 325-336页

作者： fu-Xiang Cheng sheng Wu Song-Ling Wang Bo Zhang Yan Liu Chun-sheng Liao Chun-Hua Yan China Minmetals (Beijing) Research Institute of RE Co. Ltd. Beijing China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications PKU-HKU Joint Lab on Rare Earth Materials and Bioinorganic Chemistry Peking University Beijing China

Minimum amounts of extracting solvent and scrubbing agent solution (denoted as Smin and Wmin respectively) mean the theoretical minimal requirements for chemicals to achieve a specified separation duty, and therefore attract more concerns in the process design of countercurrent extraction separation. Over the past decade, hyperlink extraction technology has been widely used in rare earth separation industry in China with the target to decrease chemical consumption as well as pollution discharges. However, the equations of Smin and Wmin derived in the earlier version of the theory of countercurrent extraction can only be correctly applied to two-component separation and become invalid for hyperlink processes. It is significant to develop new aspects of the theory for design of the hyperlink processes. The separation of (A1A2···At-1)/(A2A3···At) is the basic configuration in the hyperlink processes differently from in conventional processes, where A1, A2, ···, At represent different kinds of rare earth ions with the same number of valence. The separations of two and three components have been discussed and the equations of Smin and Wmin are derived in our previous works. Nevertheless, it is still significant, especially for rare earth separations, to investigate the separations with more components. The present article will therefore focus on developing new expressions for Smin and Wmin applied to the (A1A2···At﹣1)/(A2A3···At) separation. Also a five-component separation case is simulated according to the derived equations. This work is an essential part of the new theory to design the hyperlink extraction processes.

关键词： Theory of Countercurrent Extraction Minimum Amount of Extracting Solvent Countercurrent Extraction Hyperlink Process Multi-Component Separation

顺序主导和方向驱动下基于点边特征的人体动作识别方法

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控制与决策 2024年第9期39卷 3090-3098页

作者：苏本跃郭梦娟朱邦国盛敏安庆师范大学计算机与信息学院安徽安庆246133 铜陵学院数学与计算机学院安徽铜陵244061 安庆师范大学数理学院安徽安庆246133

人体运动是肢体运动方向、关节活动顺序以及动作幅度相互协调的过程.然而,现有方法往往直接对原始3D骨骼关节点信息进行建模,容易忽略肢体关节活动的顺序关系、运动方向性以及动作幅度变化影响.因此,提出一种顺序主导和方向驱动下基于... 详细信息

人体运动是肢体运动方向、关节活动顺序以及动作幅度相互协调的过程.然而,现有方法往往直接对原始3D骨骼关节点信息进行建模,容易忽略肢体关节活动的顺序关系、运动方向性以及动作幅度变化影响.因此,提出一种顺序主导和方向驱动下基于点边特征的骨骼卷积神经网络,通过刻画人体关节点运动顺序、帧间距离和骨骼边方向向量等特征对人体动作分类识别.该网络包含顺序主导单元和方向驱动单元.顺序主导单元对骨骼边末端关节点进行建模,利用关节点的排列方式、帧间距离信息对关节活动顺序和肢体变化幅度进行表征.方向驱动单元利用骨骼边方向向量信息表征肢体运动的方向性.最后,将顺序主导单元与方向驱动单元进行特征融合,对人体日常行为动作进行分类识别.实验结果表明,在两个大型数据集NTU-RGB+D60和NTU-RGB+D120上的实验结果分别较基准方法提升了2.6%、3.5%和5.9%、6.1%.因此,所提出方法能有效利用多特征之间的协同互补性对人类日常行为运动进行深层次刻画,提高人体动作识别的精度.

关键词：人体动作识别骨骼数据骨骼边方向向量有序关节点帧间距离卷积神经网络

井冈山机场航站楼屋盖表面风压的数值模拟及试验研究

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工程力学 2005年第4期22卷 96-100页

作者：刘继生陈水福浙江大学土木系杭州310027

采用数值模拟方法对井冈山机场航站楼屋盖结构在近地风作用下的表面风压进行了计算,并在边界层风洞中对该屋盖的表面风压进行了模型试验测定。数值模拟基于稳态的Reynolds时均Navier-Stokes方程,运用了标准k?ε湍流封闭模型。将计算得... 详细信息

采用数值模拟方法对井冈山机场航站楼屋盖结构在近地风作用下的表面风压进行了计算,并在边界层风洞中对该屋盖的表面风压进行了模型试验测定。数值模拟基于稳态的Reynolds时均Navier-Stokes方程,运用了标准k?ε湍流封闭模型。将计算得到的风压系数值与风洞试验值作了比较,结果表明数值模拟较好地反映了大跨度屋盖表面风压的分布情况,由其得到的风压系数与风洞试验数据有较好的吻合。

关键词：机场航站楼风压系数数值模拟风洞试验大跨度屋盖结构

RAMAN STUDIES OF STRUCTURAL PHASE TRANSITION IN[n-C_(11)H_(28)NH_8]_2ZnCl_4

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Chinese Chemical Letters 1993年第3期4卷 255-256页

作者： Ning guo Guang fu ZENG Shi Quan XI Changchun Institute of Applied Chemistry,Academia Sinica.Changchun 130022

The perovskite type of compound [n-C_(11)H_(23)N_3]_2ZnCl_4(abr.C_(11)Zn)exhibits two solid-solid phase transitions at T_(c1)=298.7 K and T_(c2)=360.1 K.A temperature dependence study of Raman spectra of C_(11)Zn provides the evidence of occurence of the structural phase transition related to the dynamics of the alkylammonium *** room temperature phase is ordered and contains the all-trans alkyl *** intermediate temperature phase presents a partial conformational disorder and liquidlike state of all conformational disorder occurs at high-temperature phase.

关键词： Raman spectrosocopy molecular conformation phase transition bis(n-undecylammonium)tetrachlorozincate

Integrity of the editing and publishing process is the basis for improving an academic journal’s Impact Factor

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World Journal of Gastroenterology 2022年第43期28卷 6168-6202页

作者： Jin-Lei Wang Xiang Li Jia-Ru Fan Jia-Ping Yan Ze-Mao Gong Yue Zhao Dong-Mei Wang Li Ma Na Ma Diao-Mei guo Lian-sheng Ma Baishideng Publishing Group Inc PleasantonCA 94566United States

BACKGROUND Journal Impact Factor™(JIF)is often used to evaluate the relative reputation and quality of academic journals in their respective fields,and can greatly influence the quality and scope of subsequent manuscript ***,many if not all academic journals are interested in increasing their JIF,to improve their academic *** To determine the importance of the integrity of the editorial and publication process in improving the academic influence of academic journals and the JIF of academic *** In this paper,we describe our statistical analysis of bibliometric factors-including the 2021 JIFs released in the Journal Citation Report™2022,discipline rankings,received and published articles in 2019-2021,and webpage visits and downloads-for seven journals published by Baishideng Publishing Group(Baishideng)and indexed in Science Citation Index Expanded™;ultimately,we introduce and discuss the editing and publishing processes of Baishideng’s journals in their entirety,as they form the basis for our objective of safeguarding and bolstering integrity in academic *** For the seven journals assessed,their 2021 JIFs were basically unchanged from 2020,with the current metric ranging from 5.374 for World Journal of Gastroenterology(WJG)to 1.534 for World Journal of Clinical Cases(WJCC).further assessments of the journals’bibliometrics from 2019 to 2020,showed that World Journal of Stem Cells has the highest self-citation rate(1.43%)and World Journal of Gastrointestinal Surgery has the lowest(0.21%).Additionally,the total 3012 articles published during this period were cited by more than 20000 articles in approximately 8000 academic *** note,the 1102 articles published in WJG were cited by articles in 3059 journals,among which 171 journals have a JIF of>10,including internationally renowned academic journals such as CA-A Cancer Journal for Clinicians(2021 JIF 286.130,record count:1),Lancet(2021 JIF 202.731,record count:

关键词： Journal Impact Factor Academic journal Editing process Publishing process Open access Peer review Language polishing Academic influence