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Frontiers of Computer Science 2015年第5期9卷 788-805页

作者： ronggang bai Jiqiang XIA Qingfeng MAN School of Information Science and Technology Beijing Forestry University Beijing 100083 China School of Mechanical Engineering and Automation Beihang University Beijing 100191 China

This paper proposes a new method to analyze Ethernet performance. Currently, most studies on Ethernet performance assume that the channel is divided into time slots, or the network load is saturated with little attention to a non-slotted channel and the non-saturation status. However, this situation is more consistent with the practical application of Ethernet. This paper first calculates the original collision probability and the retransmission collision probability in the original load, then obtains the retransmission load of the network based on those two collision probabilities, and finally acquires the actual load of the network by an iterative method. In addition, the accuracy of the analysis is checked against simulation results.

关键词： BEB Ethernet networks MAC performance analysis collision probability two-dimensional collisionstate model

Real-time and reliability analysis of time-triggered CAN-bus

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Chinese Journal of Aeronautics 2013年第1期26卷 171-178页

作者： Xia Jiqiang Zhang Chuansen bai ronggang Xue Liqiang School of Mechanical Engineering and Automation Beihang University

Real-time performance and reliability are two most important issues in applications of time-triggered controller area network （CAN） bus systems at present. A scheduling matrix of time-triggered CAN-bus system is established using average-loading algorithm. Periodic messages are guaranteed to transmit without delay by distributing independent transmission windows within the system matrix. Considering the traditional CAN-bus transmission mechanism and the time-triggered feature, an algorithm is improved to calculate the worst-case delay of event-triggered messages in time-triggered CAN-bus systems. The failure probability is calculated for event-triggered messages whose worst-case delay exceeds their deadlines. Different levels of redundant structures of CAN-bus circuits are analyzed and the maintenance management is proposed to improve the system reliability. Finally, the reliabilities of different structures are calculated and the influences of maintenance on the system reliability are analyzed.

关键词： CAN-bus Maintenance system Real-time performance Reliability Time-triggered

Contact modeling and prediction-based routing in sparse mobile networks

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Frontiers of Electrical and Electronic Engineering in China 2007年第3期2卷 260-267页

作者： GUO Yang QU Yugui bai ronggang ZHAO Baohua Department of Electronic Engineering and Information Science University of Science and Technology of ChinaHefei 230027China

Mobile ad-hoc networks(MANETs)provide highly robust and self-configuring network capacity required in many critical applications,such as battlefields,disaster relief,and wild life *** this paper,we focus on efficient message forwarding in sparse MANETs,which suffers from frequent and long-duration *** contacts become the basic way of communication in such kind of network instead of data links in traditional ad-hoc *** approaches are primarily based on estimation with pure probability *** forwarding decisions from statistic results can lead to disastrous routing performance when wrong choices are *** paper introduces a new routing protocol,based on contact modeling and contact prediction,to address the *** contact model focuses on the periodic contact pattern of nodes with actual inter-contact time involved,in order to get an accurate realization of network cooperation and connectivity *** corresponding contact prediction algorithm makes use of both statistic and time sequence information of contacts and allows choosing the relay that has the earliest contact to the destination,which results in low average *** is used to compare the routing performance of our algorithm with three other categories of forwarding algorithm proposed *** results demonstrate that our scheme is more efficient in both data delivery and energy consumption than previously proposed schemes.

关键词： contact modeling prediction routing protocol sparse mobile ad-hoc network

多输入多输出的异构无线传感器网络时分多址调度算法

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西安交通大学学报 2008年第11期42卷 1402-1407页

作者：王庆华屈玉贵柏荣刚赵保华中国科学技术大学电子工程与信息科学系合肥230027

针对基于多输入多输出技术的无线传感器网络中节点接入信道过程复杂、容易产生碰撞等问题,提出了采用异构无线传感器网络模型和基于该网络模型的集中式时分多址调度算法.网络模型中的节点分为普通节点和带有多天线的特殊节点,节点被分... 详细信息

针对基于多输入多输出技术的无线传感器网络中节点接入信道过程复杂、容易产生碰撞等问题,提出了采用异构无线传感器网络模型和基于该网络模型的集中式时分多址调度算法.网络模型中的节点分为普通节点和带有多天线的特殊节点,节点被分为多个簇,特殊节点担当簇头角色,且在特殊节点间建立树形路由.该网络模型有效解决了分配时隙时节点的传输方向性问题.基于该模型的时分多址算法首先根据特殊节点的冲突节点度大小为节点染色,然后根据节点的数据包数与距基站跳数的乘积确定节点分配时隙的先后次序.实验结果表明,该算法可以有效避免冲突,提高时隙利用率,具有时延小、吞吐量大、适用于基于多输入多输出技术的无线传感器网络等优点.

关键词：多输入多输出无线传感器网络节点染色时隙分配

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几种烟草薄片的热性能分析

北京师范大学学报（自然科学版） 2010年第6期46卷 696-699页

作者：白晓莉霍红蒙延峰彭国岗龚荣岗红塔烟草(集团)有限责任公司技术中心云南玉溪653100 北京师范大学化学学院北京100875 鲁东大学化学与材料科学学院山东烟台264025

利用热重分析仪深入比较3种烟草薄片在不同升温速率和不同气氛下的热分解行为,结果表明在氮气气氛下,提高升温速率会使分解剩余物的比例增加;在相同的升温速率下,薄片在空气中的分解温度要稍低,空气中的氧气会加速样品氧化分解.

关键词：薄片热重分析(TGA) 微商热重(DTG)

Mobile emergency （surgical） hospital： Development and application in medical relief of ＂4.20＂ Lushan earthquake in Sichuan Province, China

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Chinese Journal of Traumatology 2015年第1期18卷 5-9页

作者： Bin Cheng Ruofei Shi Dingyuan Du Ping Hu Jun Feng Guangbin Huang Anning Cai Wei Yin ronggang Yang Chongqing Emergency Medical Center Chongqing 400042 China

In the 21st century, natural disasters and emergencies occur frequently worldwide, which leads to the loss of hundreds of thousands of lives as well as the direct and indirect economic losses. China has a vast territory frequently struck by natural disasters. However, the reality is not optimistic. Poor organization and management during the rescue actions, the lack of large-scale, systematic medical rescue equipment were all great barriers to the outcomes. Mobile hospitals are expected to provide better health care. We were inspired by the concept of mobile hospital. Chongqing Emergency Medical Center, has set up trauma care system since 1988, in which pre- hospital care, intensive care, and in-hospital treatment is fully integrated. As a major advantage, such a system provided assurance of＂golden hour＂ rescue treatment. Providing mobile intensive care and pre- hospital surgical service for severe trauma patients could reduce mortality significantly. Based on the civilian experiences in Chongqing Emergency Medical Center, the mobile emergency （surgical） hospital was developed. 2015 Production and hosting by Elsevier B.V. on behalf of Daping Hospital and the Research Institute of Surgery of the Third Military Medical University.

关键词： Natural disaster Medical relief Mobile hospital

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联轴器试验系统偏摆装置优化设计

工程与试验 2019年第1期59卷 67-69页

作者：青克尔杨秀光白峰王荣刚中机试验装备股份有限公司吉林长春130103

联轴器是铁路高速列车驱动的关键部件,其安全性和可靠性直接影响列车组安全运行。为保证产品性能,需要设计一套试验系统进行试验验证。偏摆装置是该试验系统的重要组成部分,主要模拟联轴器的轴向径向位移补偿功能。

关键词：联轴器偏摆装置位移补偿

复荣通脉胶囊对糖尿病大鼠胸主动脉PAI-1、t-PA表达的影响

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中西医结合心脑血管病杂志 2016年第23期14卷 2762-2766页

作者：崔荣岗田风胜苏阳白海龙边云孟晓峰河北医科大学附属沧州中西医结合临床医学院河北沧州061001

目的观察复荣通脉胶囊对糖尿病大鼠胸主动脉1型纤溶酶原激活物抑制剂(PAI-1)、组织型纤溶酶原激活物(t-PA)表达的影响,探讨其对纤溶系统的作用。方法将Wistar大鼠随机分为对照组和糖尿病造模组,造模成功大鼠随机分为模型组、复荣通脉低... 详细信息

目的观察复荣通脉胶囊对糖尿病大鼠胸主动脉1型纤溶酶原激活物抑制剂(PAI-1)、组织型纤溶酶原激活物(t-PA)表达的影响,探讨其对纤溶系统的作用。方法将Wistar大鼠随机分为对照组和糖尿病造模组,造模成功大鼠随机分为模型组、复荣通脉低剂量组(0.7 g/kg)、复荣通脉中剂量组(1.4 g/kg)、复荣通脉高剂量组(2.8 g/kg),8周后,观察各组大鼠血糖、血脂水平及胸主动脉PAI-1及t-PA免疫组化表达。结果造模组大鼠血糖较对照组明显升高(P<0.05);胸主动脉PAI-1表达在各造模组较对照组明显增强(P<0.05),而在复荣通脉中剂量组、高剂量组表达明显受抑制;胸主动脉t-PA表达在各造模组较对照组明显减弱(P<0.05),在复荣通脉中剂量组、高剂量组其表达明显增强(P<0.05)。结论复荣通脉胶囊可抑制PAI-1、促进t-PA在大鼠胸主动脉的表达。

关键词：糖尿病大血管病变复荣通脉胶囊 1型纤溶酶原激活物抑制剂组织型纤溶酶原激活物

基于网络药理学和实验验证探讨三黄益肾胶囊治疗糖尿病的分子机制

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国际中医中药杂志 2024年第10期46卷 1330-1337页

作者：孟晓峰白海龙边云张爱族田风胜崔荣岗苏阳李娟河北省沧州中西医结合医院糖尿病三科沧州061000

目的通过网络药理学、分子对接和实验验证探讨三黄益肾胶囊治疗糖尿病的物质基础及潜在作用机制。方法利用中国天然产物化学成分数据库和SymMap数据库筛选三黄益肾胶囊的活性成分及作用靶点,通过GeneCards数据库筛选T2DM相关靶点,构建... 详细信息

目的通过网络药理学、分子对接和实验验证探讨三黄益肾胶囊治疗糖尿病的物质基础及潜在作用机制。方法利用中国天然产物化学成分数据库和SymMap数据库筛选三黄益肾胶囊的活性成分及作用靶点,通过GeneCards数据库筛选T2DM相关靶点,构建“中药-活性成分-靶点”网络,使用R语言对交集靶点进行GO功能及KEGG通路富集分析。选择关键活性成分与潜在核心靶点进行分子对接验证。将60只大鼠按随机数字表法分为正常组、模型组、磷酸西格列汀片组、三黄益肾胶囊组,每组15只。除正常组外,其余各组制备T2DM大鼠模型,灌胃相应药物8周。采用放射免疫分析法检测空腹血糖(FBG)、空腹胰岛素(FINS)水平,计算胰岛素抵抗指数(HOMA-IR),Western blot法检测胰腺组织表皮生长因子受体(EGFR)、表皮生长因子(EGF)、AKT1、肿瘤抑制蛋白p53(TP53)、胱天蛋白酶3(CASP3)蛋白表达。结果得到三黄益肾胶囊活性成分160个,作用靶点298个,T2DM相关靶点2194个,三黄益肾胶囊与T2DM交集靶点166个。GO功能和KEGG通路富集分析得出主要涉及信号转导、氧化应激、细胞凋亡等生物学反应过程,主要参与P13K/Akt、P53和CASP3等靶点的调控。分子对接结果表明,筛选得到的主要活性成分与靶点有较强的结合能力。与模型组比较,三黄益肾胶囊组大鼠FBG、FINS、HOMA-IR、TP53、CASP3降低(P<0.05),EGFR、EGF、Akt1蛋白升高(P<0.05)。结论三黄益肾胶囊治疗糖尿病的作用机制可能与调节EGF/EGFR/P13K/Akt信号通路、TP53信号通路、CASP3信号通路、PPARG信号通路、ESR1信号通路、PTGS2信号通路、CAT信号通路和CTNNB1信号通路有关。

关键词：糖尿病,2型三黄益肾胶囊网络药理学表皮生长因子受体丝氨酸/苏氨酸蛋白激酶1 肿瘤抑制蛋白p53

基于DID模型分析轻盈祛浊汤治疗痰湿瘀阻型糖尿病肾病的远期疗效及对维生素D水平的影响

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中国医院用药评价与分析 2024年第4期24卷 426-430页

作者：白海龙边云孟晓峰王丽芳王凤英田风胜崔荣岗苏阳李娟河北省沧州中西医结合医院糖尿病三科河北沧州061001 河北省沧州中西医结合医院治未病中心河北沧州061001 河北省沧州中西医结合医院检验科河北沧州061001 河北省沧州中西医结合医院骨科院区影像科河北沧州061001 河北省沧州中西医结合医院护理部河北沧州061001

目的:基于双重差分法(DID)模型分析轻盈祛浊汤治疗痰湿瘀阻型糖尿病肾病(DN)的远期疗效及对血清25羟基维生素D[25(OH)D]水平的影响。方法:前瞻性选取2020年6月至2022年6月于该院就诊的痰湿瘀阻型DN患者120例,按照随机数字表法分为对照... 详细信息

目的:基于双重差分法(DID)模型分析轻盈祛浊汤治疗痰湿瘀阻型糖尿病肾病(DN)的远期疗效及对血清25羟基维生素D[25(OH)D]水平的影响。方法:前瞻性选取2020年6月至2022年6月于该院就诊的痰湿瘀阻型DN患者120例,按照随机数字表法分为对照组和观察组,各60例。对照组患者接受常规西医标准化治疗,观察组患者在对照组的基础上予以轻盈祛浊汤治疗。比较两组患者的临床疗效,炎症因子、血钙、血磷和25(OH)D水平,采用DID模型对比两组患者治疗前后不同时间点(治疗前,治疗后1、2、3及6个月)的血清25(OH)D水平。结果:随访6个月,无1例失访。观察组患者的总有效率[93.33%(56/60)]较对照组[78.33%(47/60)]升高,差异有统计学意义(P0.1),满足平行趋势假设;两组治疗后的差分效应量为-1.878,且差异有统计学意义(P<0.05),即说明在治疗后各时间点,观察组的效应值明显高于对照组;双重差分效应值为-2.722,且差异有统计学意义(P=0.005)。结论:轻盈祛浊汤能上调痰湿瘀阻型DN患者维生素D水平,改善钙磷水平,减轻炎症水平,提高疗效。

关键词：轻盈祛浊汤糖尿病肾病痰湿瘀阻型维生素D 双重差分法模型

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