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基于多信息融合的可驾驶道路检测算法

计算机工程与设计 2017年第5期38卷 1389-1393页

作者：朱振文周莉刘建陈杰中国科学院微电子研究所新能源汽车电子研发中心北京100029 中国科学院大学电子电气与通信工程学院北京100049

为增强高级辅助驾驶系统中对城市复杂路况的可驾驶道路检测性能,提出一种稳健的可驾驶道路检测算法。对彩色图像,通过特征空间变换去除光照强度变化、阴影等因素的影响,提取图像的光照不变特征,在线建立道路模型并分类得到道路区域二值... 详细信息

为增强高级辅助驾驶系统中对城市复杂路况的可驾驶道路检测性能,提出一种稳健的可驾驶道路检测算法。对彩色图像,通过特征空间变换去除光照强度变化、阴影等因素的影响,提取图像的光照不变特征,在线建立道路模型并分类得到道路区域二值图,对道路区域二值图进行滤波处理得到道路的相似度分布;将相似度分布和经验性道路空间先验分布相结合进行贝叶斯概率分析,获得可驾驶道路的感兴趣区域;利用感兴趣区域内的深度信息,通过RANSAC算法排除非道路点,获得可驾驶道路区域。在KITTI数据集上的实验测试结果表明了该算法的有效性和鲁棒性。

关键词：可驾驶道路区域检测光照不变性计算机视觉贝叶斯深度信息

响应面法优化克氏原螯虾虾壳中乙酸钙的提取工艺

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食品工业科技 2017年第21期38卷 167-173页

作者：喻亚丽周运涛文平何力周殿芳吕磊中国水产科学研究院长江水产研究所湖北武汉430223 农业部风险评估实验室(武汉) 湖北武汉430223

为进一步利用虾壳资源,以克氏原螯虾虾壳为原料,采用乙酸提取法从虾壳中进行乙酸钙的提取,探讨了乙酸浓度、液料比、温度和时间4个因素对虾壳钙提取的影响,在此基础上利用响应面法研究各自变量及其交互作用对虾壳中钙提取率的影响。结... 详细信息

为进一步利用虾壳资源,以克氏原螯虾虾壳为原料,采用乙酸提取法从虾壳中进行乙酸钙的提取,探讨了乙酸浓度、液料比、温度和时间4个因素对虾壳钙提取的影响,在此基础上利用响应面法研究各自变量及其交互作用对虾壳中钙提取率的影响。结果表明,影响钙提取率的因素大小顺序为:液料比>温度>乙酸的浓度>酸解时间。乙酸钙提取最优条件是乙酸浓度73.60 g/L,反应时间3 h,反应温度65℃,液料比11.60∶1(m L/g),在此条件下,得到克氏原螯虾虾壳中钙的得率为20.45%。此工艺下钙的得率较高,成本较低。本研究为以虾壳为钙源进行乙酸钙生产提供了技术参考。

关键词：克氏原螯虾乙酸响应面法乙酸钙

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河南省巩义市铁生沟滑坡特征及防治措施研究

科技信息 2012年第15期 59-60页

作者：李文洲河南省地质矿产勘查开发局第三地质调查队河南信阳464000

巩义市地质环境条件较复杂,是河南省地质灾害的多发区。铁生沟滑坡位于巩义市夹津口镇铁生沟村黄土丘陵区。通过勘查和监测,该滑坡为一大型滑坡,滑坡变形的主要原因是地质因素、降雨和人为因素共同作用的结果,目前仍处于不稳定状态,危... 详细信息

巩义市地质环境条件较复杂,是河南省地质灾害的多发区。铁生沟滑坡位于巩义市夹津口镇铁生沟村黄土丘陵区。通过勘查和监测,该滑坡为一大型滑坡,滑坡变形的主要原因是地质因素、降雨和人为因素共同作用的结果,目前仍处于不稳定状态,危害较大。结合滑坡体实际情况对滑坡治理进行初步研究,提出了采用削坡减载、地表地下排水措施及设置抗滑桩挡土墙支挡工程等综合治理措施,为黄土丘陵区相同类型的滑坡治理提供借鉴。

关键词：铁生沟滑坡地质特征成因分析防治措施

Wave effect of gravitational waves intersected with a microlens field Ⅱ:An adaptive hierarchical tree algorithm and population study

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 241-254页

作者： Xikai Shan Guoliang li Xuechun Chen wen Zhao Bin Hu Shude Mao Department of Astronomy Tsinghua University Purple Mountain Observatory Chinese Academy of Sciences Institute for Frontier in Astronomy and Astrophysics Beijing Normal University School of Physics and Astronomy Beijing Normal University School of Astronomy and Space Science University of Science and Technology of China CAS Key Laboratory for Researches in Galaxies and Cosmology Department of Astronomy University of Science and Technology of ChinaChinese Academy of Sciences

The gravitational lensing wave effect generated by a microlensing field embedded in a lens galaxy is an inevitable phenomenon in strong lensed gravitational waves （SLGWs）.This effect presents both challenges and opportunities for the detection and application of ***,investigating this wave effect requires computing a complete diffraction integral over each microlens in the *** is extremely time-consuming due to the large number of microlenses （10～3-10～6）.Therefore,simply adding all the microlenses is ***,the complexity of the time delay surface makes the lens plane resolution a crucial factor in controlling numerical *** this paper,we propose a trapezoid approximation-based adaptive hierarchical tree algorithm to meet the challenges of calculation speed and *** find that this algorithm accelerates the calculation by four orders of magnitude compared to the simple adding method and is one order of magnitude faster than the fixed hierarchical tree algorithm proposed for electromagnetic *** importantly,our algorithm ensures controllable numerical errors,increasing confidence in the *** with our previous work （***.66,239511,2023）,this paper addresses all numerical issues,including integral convergence,precision,and computational time1).Finally,we conducted a population study on the microlensing wave effect of SLGWs using this algorithm and found that the microlensing wave effect cannot be ignored,especially for Type II SLGWs （from saddle position of the time delay surface） due to their intrinsic geometric structures and their typical intersection with a denser microlensing ***,more than 33%（11%） of SLGWs have a mismatch larger than 1%（3%） compared to the unlensed ***,we found that the mismatch between signal pairs in a doubly imaged GW is generally larger than 10-3,and 61%（25%） of signal pairs have a mismatch larger than 1%（3%）.Therefo

关键词： gravitational lensing diffractional integral algorithm gravitational wave

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基于FTA的装载机系统可靠性研究

现代制造工程 2004年第4期 88-89页

作者：黄华梁苏茜温芳周立广西大学机械工程学院南宁530004

用故障树分析的方法 ,研究装载机的系统可靠性 ,建立与装载机系统的功能相对应的可靠性模型 ,由故障发生时间的统计数据得到装载机系统的可靠性指标 ,是提高产品质量和可靠性的依据。

关键词：装载机系统可靠性故障树分析 FTA 机械系统

Application of the improved dung beetle optimizer,muti-head attention and hybrid deep learning algorithms to groundwater depth prediction in the Ningxia area,China

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 18-23页

作者： Jiarui Cai Bo Sun Huijun Wang Yi Zheng Siyu zhou Huixin li Yanyan Huang Peishu Zong Collaborative Innovation Center on forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment ChangeNanjing University of Information Science and TechnologyNanjingChina Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) ZhuhaiChina China Meteorological Administration Key Laboratory of Transportation MeteorologyNanjingChina Jiangsu Meteorological Observatory NanjingChina

Due to the lack of accurate data and complex parameterization,the prediction of groundwater depth is a chal-lenge for numerical *** learning can effectively solve this issue and has been proven useful in the prediction of groundwater depth in many *** this study,two new models are applied to the prediction of groundwater depth in the Ningxia area,*** two models combine the improved dung beetle optimizer(DBO)algorithm with two deep learning models:The Multi-head Attention-Convolution Neural Network-Long Short Term Memory networks(MH-CNN-LSTM)and the Multi-head Attention-Convolution Neural Network-Gated Recurrent Unit(MH-CNN-GRU).The models with DBO show better prediction performance,with larger R(correlation coefficient),RPD(residual prediction deviation),and lower RMSE(root-mean-square error).Com-pared with the models with the original DBO,the R and RPD of models with the improved DBO increase by over 1.5%,and the RMSE decreases by over 1.8%,indicating better prediction *** addition,compared with the multiple linear regression model,a traditional statistical model,deep learning models have better prediction performance.

关键词： Groundwater depth Multi-head attention Improved dung beetle optimizer CNN-LSTM CNN-GRU Ningxia

不同剂量艾司氯胺酮复合舒芬太尼用于食管癌术后患者自控静脉镇痛的效果

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中国新药与临床杂志 2022年第3期41卷 157-161页

作者：罗艳芳李文舟卢锡华郑州大学附属肿瘤医院麻醉科河南郑州450008

目的观察不同剂量艾司氯胺酮复合舒芬太尼用于食管癌术后患者自控静脉镇痛(PCIA)的效果及对炎症因子的影响。方法将拟行食管癌根治术的90例患者随机分为S1组、SE1组、SE2组,每组30例。3组麻醉诱导和维持方案相同,术后均采用PCIA。镇痛... 详细信息

目的观察不同剂量艾司氯胺酮复合舒芬太尼用于食管癌术后患者自控静脉镇痛(PCIA)的效果及对炎症因子的影响。方法将拟行食管癌根治术的90例患者随机分为S1组、SE1组、SE2组,每组30例。3组麻醉诱导和维持方案相同,术后均采用PCIA。镇痛液配方S1组为舒芬太尼2μg·kg^(-1)+托烷司琼10 mg+氯化钠注射液至100 mL,SE1组、SE2组在S1组基础上分别加用艾司氯胺酮0.015、0.03 mg·kg^(-1)·h^(-1)。初始负荷剂量均为5 mL,背景输注剂量2 mL·h^(-1),单次按压量2 mL,极限量12 mL,锁定时间15 min。评估术后4、8、24、48 h的疼痛视觉模拟量表(VAS)评分,记录术后48 h内镇痛泵按压次数。采用酶联免疫吸附法检测麻醉前、术毕、术后48 h时血清白细胞介素(IL)-6、肿瘤坏死因子(TNF)-α浓度,并观察不良反应发生情况。结果术后4、8、24、48 h,SE1组和SE2组疼痛VAS评分均低于S1组,且SE2组低于SE1组,差异均有显著意义(P0.05),术后48 h时SE1组、SE2组IL-6、TNF-α水平均低于S1组(P0.05)。结论食管癌术后艾司氯胺酮复合舒芬太尼PCIA能提供良好的镇痛效果,且能降低术后炎症因子水平,艾司氯胺酮0.03 mg·kg^(-1)·h^(-1)为推荐剂量。

关键词：舒芬太尼艾司氯胺酮镇痛病人控制炎症

Non-coding RNAs in acute ischemic stroke:from brain to periphery

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Neural Regeneration Research 2025年第1期20卷 116-129页

作者： Shuo li Zhaohan Xu Shiyao Zhang Huiling Sun Xiaodan Qin lin Zhu Teng Jiang Junshan zhou Fuling Yan Qiwen Deng Department of Neurology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina Department of Neurology Zhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsu ProvinceChina General Clinical Research Center Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina

Acute ischemic stroke is a clinical emergency and a condition with high morbidity,mortality,and *** predictive,diagnostic,and prognostic biomarkers and effective therapeutic targets for acute ischemic stroke remain *** innovations in high-throughput gene sequencing analysis,many aberrantly expressed non-coding RNAs(ncRNAs)in the brain and peripheral blood after acute ischemic stroke have been found in clinical samples and experimental *** expressed ncRNAs in the post-stroke brain were demonstrated to play vital roles in pathological processes,leading to neuroprotection or deterioration,thus ncRNAs can serve as therapeutic targets in acute ischemic ***,distinctly expressed ncRNAs in the peripheral blood can be used as biomarkers for acute ischemic stroke prediction,diagnosis,and *** particular,ncRNAs in peripheral immune cells were recently shown to be involved in the peripheral and brain immune response after acute ischemic *** this review,we consolidate the latest progress of research into the roles of ncRNAs(microRNAs,long ncRNAs,and circular RNAs)in the pathological processes of acute ischemic stroke–induced brain damage,as well as the potential of these ncRNAs to act as biomarkers for acute ischemic stroke prediction,diagnosis,and *** from this review will provide novel ideas for the clinical application of ncRNAs in acute ischemic stroke.

关键词： acute ischemic stroke apoptosis blood–brain barrier damage circular RNAs excitatory toxicity long non-coding RNAs microRNAs neuroinflammation non-coding RNAs oxidative stress

Activation of adult endogenous neurogenesis by a hyaluronic acid collagen gel containing basic fibroblast growth factor promotes remodeling and functional recovery of the injured cerebral cortex

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Neural Regeneration Research 2025年第10期20卷 2923-2937页

作者： Yan li Peng Hao Hongmei Duan Fei Hao wen Zhao Yudan Gao Zhaoyang Yang Kwok-Fai So Xiaoguang li Department of Neurobiology School of Basic Medical SciencesCapital Medical UniversityBeijingChina China Rehabilitation Science Institute China Rehabilitation Research CenterBeijing Key Laboratory of Neural Injury and RehabilitationBeijingChina Center of Neural Injury and Repair Beijing Institute for Brain DisordersBeijingChina Beijing Key Laboratory for Biomaterials and Neural Regeneration School of Engineering MedicineBeihang UniversityBeijingChina Guangdong-HongKong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhouGuangdong ProvinceChina Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory) GuangzhouGuangdong ProvinceChina Department of Ophthalmology and State Key Laboratory of Brain and Cognitive Sciences The University of Hong KongHong Kong Special Administration RegionChina Center for Brain Science and Brain-Inspired Intelligence Guangdong-HongKong-Macao Greater Bay AreaGuangzhouGuangdong ProvinceChina Co-innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Biomedical Engineering School of Biological Science and Medical EngineeringBeihang UniversityBeijingChina

The presence of endogenous neural stem/progenitor cells in the adult mammalian brain suggests that the central nervous system can be repaired and regenerated after ***,whether it is possible to stimulate neurogenesis and reconstruct cortical layers II to VI in non-neurogenic regions,such as the cortex,remains *** this study,we implanted a hyaluronic acid collagen gel loaded with basic fibroblast growth factor into the motor cortex immediately following traumatic *** findings reveal that this gel effectively stimulated the proliferation and migration of endogenous neural stem/progenitor cells,as well as their differentiation into mature and functionally integrated ***,these new neurons reconstructed the architecture of cortical layers II to VI,integrated into the existing neural circuitry,and ultimately led to improved brain *** findings offer novel insight into potential clinical treatments for traumatic cerebral cortex injuries.

关键词： adult endogenous neurogenesis basic fibroblast growth factor-hyaluronic acid collagen gel cortical remodeling functional recovery migration motor cortex injury neural circuits neural stem cells newborn neurons proliferation