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China Communications 2021年第3期18卷 216-225页

作者： zhengqiang yan Xinghai yang Lijun Sun Jingjing Wang Qingdao University of Science and Technology Qingdao 266000Shandong ProvinceChina

In this paper,a fast orthogonal matching pursuit(OMP)algorithm based on optimized iterative process is proposed for sparse time-varying underwater acoustic(UWA)channel *** channel estimation consists of calculating amplitude,delay and Doppler scaling factor of each path using the received multi-path *** algorithm,called as OIP-FOMP,can reduce the computationally complexity of the traditional OMP algorithm and maintain accuracy in the presence of severe inter-carrier interference that exists in the time-varying UWA *** this algorithm,repeated inner product operations used in the OMP algorithm are removed by calculating the candidate path signature Hermitian inner product matrix in *** QR decomposition is used to estimate the path amplitude,and the problem of reconstruction failure caused by inaccurate delay selection is avoided by optimizing the Hermitian inner product *** analysis and simulation results show that the computational complexity of the OIP-FOMP algorithm is reduced by about 1/4 compared with the OMP algorithm,without any loss of accuracy.

关键词： underwater acoustic communication OFDM sparse channel estimation OIP-FOMP

基于RFID的海上节点管理APP的设计与开发

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物探装备 2022年第3期32卷 194-198页

作者：闫政强东方地球物理公司装备服务处测量服务中心河北涿州072750

在ADNOC TZ浅海过渡带项目中,在小船上无法再使用原来的自动化RFID扫描设备,基于该项目需求,本文采用新大陆RFID便携式扫描枪作为系统硬件终端,并在此基础上,自主开发了基于RFID无线射频技术的海洋地震勘探节点智能管理app。该软件首先... 详细信息

在ADNOC TZ浅海过渡带项目中,在小船上无法再使用原来的自动化RFID扫描设备,基于该项目需求,本文采用新大陆RFID便携式扫描枪作为系统硬件终端,并在此基础上,自主开发了基于RFID无线射频技术的海洋地震勘探节点智能管理app。该软件首先对RFID无线射频技术的原理进行了简单介绍,然后详细介绍了系统的软件架构,用户登录,任务下载,RFID扫描,数据共享等主要功能模块的实现过程以及核心代码。最后,介绍了软件在野外施工现场的应用前景。

关键词： RFID技术 Android移动开发无线节点海洋勘探

广东省高职院校图书馆数字资源服务模式与利用现状调查与研究

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图书馆学研究（应用版） 2010年第7期 76-81页

作者：凌征强陈艳赵俊颜王佳广东外语艺术职业学院图书馆

本文通过对广东省高职院校图书馆数字资源建设现状、读者利用图书馆数字资源情况进行调研,分析图书馆数字资源服务模式,提出高职院校图书馆应当结合读者特点,大力建设数字资源,提高读者信息意识,实现数字资源的个性化、集成化服务,走图... 详细信息

本文通过对广东省高职院校图书馆数字资源建设现状、读者利用图书馆数字资源情况进行调研,分析图书馆数字资源服务模式,提出高职院校图书馆应当结合读者特点,大力建设数字资源,提高读者信息意识,实现数字资源的个性化、集成化服务,走图书馆联盟道路。

关键词：高职院校数字资源服务模式

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牛羊细菌性疾病种类及防治措施

畜牧兽医科学（电子版） 2021年第21期 126-127页

作者：闫正强周保忠临沂市罗庄区畜牧发展促进中心山东临沂276017 临沂市畜牧场山东临沂276100

牛羊养殖中如出现细菌性疾病发病,会直接影响畜牧养殖产业的经济收益状况,且各类细菌性疾病的大范围传播,还会对牛羊养殖当地的生态环境稳定性产生干扰,导致牛羊产品质量下降。大部分细菌性疾病的传染性较强,如果养殖户预防意识不高,将... 详细信息

牛羊养殖中如出现细菌性疾病发病,会直接影响畜牧养殖产业的经济收益状况,且各类细菌性疾病的大范围传播,还会对牛羊养殖当地的生态环境稳定性产生干扰,导致牛羊产品质量下降。大部分细菌性疾病的传染性较强,如果养殖户预防意识不高,将可能导致牛羊出现大面积发病的情况,抗生素是牛羊细菌性疾病治疗中较常用的药物,其作用效果较显著。该文主要论述牛羊细菌性疾病种类及防治措施。

关键词：抗生素牛羊细菌性疾病

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激光雷达技术在物探采集中的应用

物探装备 2023年第1期33卷 44-46页

作者：岳永军闫政强东方地球物理公司装备服务处测量服务中心河北涿州072750

机载激光雷达技术是近年来发展迅速的高新测绘技术,具有机动性强、数据覆盖量大、作业效率高,精度可靠等特点。机载激光雷达技术作为一种全新的感知技术能够快速获取高精度、高空间分辨率的数字地表模型,同时配合地表高清影像数据,增强... 详细信息

机载激光雷达技术是近年来发展迅速的高新测绘技术,具有机动性强、数据覆盖量大、作业效率高,精度可靠等特点。机载激光雷达技术作为一种全新的感知技术能够快速获取高精度、高空间分辨率的数字地表模型,同时配合地表高清影像数据,增强对地物的认知和识别能力,在物探工区道路踏勘、物理点精准设计、精准工农补偿、施工风险评估等许多方面具有广阔的应用需求。目前激光雷达技术已经在西南探区,新疆探区野外生产中应用。

关键词：质量精度流程

Silk damping in scalar-induced gravitational waves: a novel probe for new physics

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 79-85页

作者： yan-Heng Yu Sai Wang Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences School of Physics University of Chinese Academy of Sciences

Silk damping is well known in the study of cosmic microwave background（CMB） and accounts for suppression of the angular power spectrum of CMB on large angular multipoles. In this article, we study the effect of Silk damping on the scalar-induced gravitational waves（SIGWs）. Resulting from the dissipation of cosmic fluid, the Silk damping notably suppresses the energydensity spectrum of SIGWs on scales comparable to a diffusion scale at the decoupling time of weakly-interacting particles. The effect offers a novel observable for probing the underlying particle interaction, especially for those mediated by heavy gauge bosons beyond the standard model of particles. We anticipate that pulsar timing arrays are sensitive to gauge bosons with mass ～10～3-10～4 GeV, while space-and ground-based interferometers to those with mass ～10～7-1012GeV, leading to essential complements to on-going and future experiments of high-energy physics.

关键词： scalar-induced gravitational waves Silk damping new physics

Solar cycles during the seventeenth century revealed by equatorial aurora records

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Earth and Planetary Physics 2025年第1期9卷 182-187页

作者： Yong Wei LiMei yan Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

Solar cycles are fundamental to astrophysics,space exploration,technological infrastructure,and Earth's climate.A better understanding of these cycles and their history can aid in risk mitigation on Earth,while also deepening our knowledge of stellar physics and solar system *** the solar cycles between 1600 and 1700-especially the post-1645 Maunder Minimum,characterized by significantly reduced solar activity-poses challenges to existing solar activity *** study utilizes a new red equatorial auroral catalog from ancient Korean texts to establish solar cycle patterns from 1623 to ***,a further reevaluation of the solar cycles between 1610 and 1755 identified a total of 13 cycles,diverging from the widely accepted record of 12 cycles during that *** research enhances our understanding of historical solar activity,and underscores the importance of integrating diverse historical sources into modern analyses.

关键词： solar cycle Maunder Minimum solar activity red equatorial aurora West Pacific geomagnetic anomaly

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艾司洛尔对全麻插管时心血管反应的临床观察

中国医药导报 2006年第9期3卷 13-14页

作者：王妍心闫争强刘俊新乡医学院第一附属医院卫辉453100

目的研究艾司洛尔预防由气管插管引起的血液动力学变化。方法80例全麻病人随机分为两组,A组为应用艾司洛尔组2.0mg/Kg,B组为对照组。静注咪唑安定、丙泊酚、芬太尼和维库溴铵诱导,气管内插管。监测给药前、插管前及插管后1、3、5及10mi... 详细信息

目的研究艾司洛尔预防由气管插管引起的血液动力学变化。方法80例全麻病人随机分为两组,A组为应用艾司洛尔组2.0mg/Kg,B组为对照组。静注咪唑安定、丙泊酚、芬太尼和维库溴铵诱导,气管内插管。监测给药前、插管前及插管后1、3、5及10min心率(HR)、收缩压(SBP)、舒张压(DBP)。结果B组在插管过程中HR明显增快,与A组比较有显著差异(P<0.05)。A组SP、DP插管过程中有短时间轻度增高,B组增高明显且持续时间较长,两组比较有显著差异(P<0.01)。结论艾司洛尔在诱导前应用可有效缓解气管插管时的心血管反应。

关键词：气管内插管术艾司洛尔血液动力学

腹腔镜荷包钳法胃上中部癌根治术近期疗效分析

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中华胃肠外科杂志 2020年第11期23卷 1100-1103页

作者：吴新军薛明辉陈炳合李岩朱绍辉房祥杰闫争强河南新乡医学院第一附属医院胃肠外科 453100

目的总结腹腔镜荷包钳法胃上中部癌根治手术的应用经验,评价其临床应用价值、可行性及安全性。方法回顾性分析2016年7月至2018年12月期间,于新乡医学院第一附属医院胃肠外科接受腹腔镜荷包钳法胃上中部癌根治手术的35例患者的临床资料... 详细信息

目的总结腹腔镜荷包钳法胃上中部癌根治手术的应用经验,评价其临床应用价值、可行性及安全性。方法回顾性分析2016年7月至2018年12月期间,于新乡医学院第一附属医院胃肠外科接受腹腔镜荷包钳法胃上中部癌根治手术的35例患者的临床资料。完成胃系膜的切除及淋巴结清扫后,在腹腔镜下采用荷包钳法制作食管荷包,放置抵钉座,以管型吻合器完成食管空肠(食管胃)吻合。观察手术结果,统计切口长度、手术时间、手术失血量、淋巴结清扫数目、食管切缘距肿瘤上缘距离、术后首次排气时间、术后并发症发生情况和术后病理结果。结果35例患者均顺利完成腹腔镜荷包钳法胃上中部癌根治术,无中转开腹病例。全胃切除术26例,近端胃切除术9例;腹部切口长度为(4.0±1.1)cm。手术时间(290.0±74.6)min,术中失血量为(111.4±43.2)ml,清扫淋巴结(32.2±10.4)枚,食管切缘距肿物上缘距离为(2.6±0.5)cm。所有病例食管切缘均为阴性。术后首次排气时间为(2.9±0.9)d。全组并发症发生率为17.1%(6/35),其中吻合口相关并发症发生率为5.7%(2/35)。腹部切口均一期愈合,无切口感染;术后发生肺部感染4例,吻合口漏2例,均经非手术治疗治愈;无吻合口狭窄发生;近端胃切除病例中9例均有反酸表现,2例出现进食后上腹胀、纳差表现,均经药物治疗后缓解。余患者均顺利康复。结论腹腔镜荷包钳法胃上中部癌根治手术安全可行。

关键词：胃肿瘤腹腔镜检查消化道重建荷包钳

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Neural Regeneration Research 2025年第2期20卷 366-377页

作者： Samuel Abokyi Dennis yan-yin Tse School of Optometry The Hong Kong Polytechnic UniversityKowloonHong Kong Special Administrative RegionChina Research Center for SHARP Vision The Hong Kong Polytechnic UniversityKowloonHong Kong Special Administrative RegionChina Center for Eye and Vision Research Sha TinHong Kong Special Administrative RegionChina

Retinal aging has been recognized as a significant risk factor for various retinal disorders,including diabetic retinopathy,age-related macular degeneration,and glaucoma,following a growing understanding of the molecular underpinnings of their *** comprehensive review explores the mechanisms of retinal aging and investigates potential neuroprotective approaches,focusing on the activation of transcription factor *** meta-analyses have demonstrated promising outcomes of transcription factor EB-targeted strategies,such as exercise,calorie restriction,rapamycin,and metformin,in patients and animal models of these common retinal *** review critically assesses the role of transcription factor EB in retinal biology during aging,its neuroprotective effects,and its therapeutic potential for retinal *** impact of transcription factor EB on retinal aging is cell-specific,influencing metabolic reprogramming and energy homeostasis in retinal neurons through the regulation of mitochondrial quality control and nutrient-sensing *** vascular endothelial cells,transcription factor EB controls important processes,including endothelial cell proliferation,endothelial tube formation,and nitric oxide levels,thereby influencing the inner blood-retinal barrier,angiogenesis,and retinal ***,transcription factor EB affects vascular smooth muscle cells,inhibiting vascular calcification and *** retinal pigment epithelial cells,transcription factor EB modulates functions such as autophagy,lysosomal dynamics,and clearance of the aging pigment lipofuscin,thereby promoting photoreceptor survival and regulating vascular endothelial growth factor A expression involved in *** cell-specific functions of transcription factor EB significantly impact retinal aging mechanisms encompassing proteostasis,neuronal synapse plasticity,energy metabolism,microvasculature,and inflammation,ultimately offering pro

关键词： age-related macular degeneration anti-aging interventions autophagy calorie restriction diabetic retinopathy exercise glaucoma neuromodulation phagocytosis photoreceptor outer segment degradation retinal aging transcription factor EB