Mode Multiplication of Cylindrical Vector Beam Using Raytracing Control

Cylindrical vector beams(CVBs)hold significant promise in mode division multiplexing communication owing to their inherent vector mode orthogonality.However,existing studies for facilitating CVB channel processing are confined to mode shift conversions due to their reliance on spin-dependent helical modulations,overlooking the pursuit of mode multiplication conversion.This challenge lies in the multiplicative operation upon inhomogeneous vector mode manipulation,which is expected to advance versatile CVB channel switching and routing.Here,we tackle this gap by introducing a raytracing control strategy that conformally maps the light rays of CVB from the whole annulus distribution to an annular sector counterpart.Incorporated with the multifold conformal annulus-sector mappings and polarization-insensitive phase modulations,this approach facilitates the parallel transformation of input CVB into multiple complementary components,enabling the mode multiplication conversion with protected vector structure.Serving as a demonstration,we experimentally implemented the multiplicative operation of four CVB modes with the multiplier factors of N=+2 and N=−3,achieving the converted mode purities over 94.24%and 88.37%.Subsequently,200 Gbit/s quadrature phase shift keying signals were successfully transmitted upon multiplicative switching of four CVB channels,with the bit-error-rate approaching 1×10^(−6).These results underscore our strategy’s efficacy in CVB mode multiplication,which may open promising prospects for its advanced applications.

The Cumulative Method for Multiplication and Division

This paper provides a method of the process of computation called the cumulative method, it is based upon repeated cumulative process. The cumulative method is being adapted to the purposes of computation, particularly multiplication and division. The operations of multiplication and division are represented by algebraic formulas. An advantage of the method is that the cumulative process can be performed on decimal numbers. The present paper aims to establish a basic and useful formula valid for the two fundamental arithmetic operations of multiplication and division. The new cumulative method proved to be more flexible and made it possible to extend the multiplication and division based on repeated addition/subtraction to decimal numbers.

Improving Video Watermarking through Galois Field GF(2^(4)) Multiplication Tables with Diverse Irreducible Polynomials and Adaptive Techniques

Video watermarking plays a crucial role in protecting intellectual property rights and ensuring content authenticity.This study delves into the integration of Galois Field(GF)multiplication tables,especially GF(2^(4)),and their interaction with distinct irreducible polynomials.The primary aim is to enhance watermarking techniques for achieving imperceptibility,robustness,and efficient execution time.The research employs scene selection and adaptive thresholding techniques to streamline the watermarking process.Scene selection is used strategically to embed watermarks in the most vital frames of the video,while adaptive thresholding methods ensure that the watermarking process adheres to imperceptibility criteria,maintaining the video's visual quality.Concurrently,careful consideration is given to execution time,crucial in real-world scenarios,to balance efficiency and efficacy.The Peak Signal-to-Noise Ratio(PSNR)serves as a pivotal metric to gauge the watermark's imperceptibility and video quality.The study explores various irreducible polynomials,navigating the trade-offs between computational efficiency and watermark imperceptibility.In parallel,the study pays careful attention to the execution time,a paramount consideration in real-world scenarios,to strike a balance between efficiency and efficacy.This comprehensive analysis provides valuable insights into the interplay of GF multiplication tables,diverse irreducible polynomials,scene selection,adaptive thresholding,imperceptibility,and execution time.The evaluation of the proposed algorithm's robustness was conducted using PSNR and NC metrics,and it was subjected to assessment under the impact of five distinct attack scenarios.These findings contribute to the development of watermarking strategies that balance imperceptibility,robustness,and processing efficiency,enhancing the field's practicality and effectiveness.

A quantum algorithm for Toeplitz matrix-vector multiplication

Toeplitz matrix-vector multiplication is widely used in various fields,including optimal control,systolic finite field multipliers,multidimensional convolution,etc.In this paper,we first present a non-asymptotic quantum algorithm for Toeplitz matrix-vector multiplication with time complexity O(κpolylogn),whereκand 2n are the condition number and the dimension of the circulant matrix extended from the Toeplitz matrix,respectively.For the case with an unknown generating function,we also give a corresponding non-asymptotic quantum version that eliminates the dependency on the L_(1)-normρof the displacement of the structured matrices.Due to the good use of the special properties of Toeplitz matrices,the proposed quantum algorithms are sufficiently accurate and efficient compared to the existing quantum algorithms under certain circumstances.

The active mechanism of the Sheng Yang San Huo decoction on diabetic peripheral neuropathy on network pharmacology

Objectives:To discuss the mechanism of Sheng Yang San Huo decoction on diabetic peripheral neuropathy using the network pharmacology method.Methods:The BATMAN-TCM database,TCM-ID database,Chinese Natural Product Chemical Composition Database,and TCMIP database were employed to screen the chemical active ingredients of each herb in Sheng Yang San Huo decoction based on the“Libinsky Drug Rules”.SwissTargetPrediction was used to screen effective action targets for each herb in the prescription.Additionally,Cytoscape 3.7.0 was utilized to construct a“drug-target”network.GeneCards,OMIM,and MaLaCards databases were utilized to gather targets related to diabetic peripheral neuropathy.VENNY 2.1 online platform was employed to match drug and disease targets,draw a Venn diagram,and construct a“drug-active compounds-common target”network using Cytoscape 3.7.0.gene ontology biological process analysis and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis for the targets were conducted using the DAVID 6.8 database.Enrichment analysis results were visualized using the OmicShareTool online platform.Molecular docking was performed using CB-Dock2.Results:Following screening,a total of 217 active compounds and 132 potential targets were identified in Sheng Yang San Huo decoction.The effects are primarily enriched in pathways such as Lipid and Atherosclerosis,AGE-RAGE signaling pathway in diabetic complications,and the IL-17 signaling pathway.The binding energy of the key active ingredients to the core protein targets of DPN was favorable.Conclusion:The study reveals the characteristics of multiple targets and pathways of Sheng Yang San Huo decoction,providing new insights for the clinical application of this prescription.

The 3,300-ton rare earth oxide project of Shenghe Resources to be completed and put into production by the end of 2023

Shenghe Resources recently said in an investor survey that the company has a recycling plant in Jiangxi province,capable of processing NdFeB and phosphor slags.The 3,300-ton rare earth oxide project currently under construction is also a recycling plant,and is expected to be completed and put into operation by the end of 2023.

大型公立医院“一院多区”管理模式优化研究——以某公立医院5G赋能多院区同质化建设为例

近年来,国内大型公立医院逐步形成“一院多区”发展新模式,为实现优质医疗资源扩容和均衡区域布局提供内在动力和活力。本文通过分析我国公立医院“一院多区”发展现状和面临的问题,以问题为导向,探索“一院多区”管理体系的优化发展路径,即在制度、管理、监管、人才、绩效等同质化运营的前提下,构建多院区协同管理模式。本文以中山大学附属第三医院“一院多区”管理实践为例,从管理模式、资源配置、信息化建设、同质化管理、文化建设等方面总结管理策略和实践经验,以5G智慧赋能多院区同质化建设为抓手,从而全面提升医院整体运营效率,优化资源配置,实现医疗同质化服务和提高核心竞争力,以期为推动大型公立医院多院区高质量发展提供参考。

Translator Stylistics:A Corpus Analysis of Two English Translations of Traditional Chinese Medicine Classic Da Sheng Bian

Da Sheng Bian,a significant work on obstetrics and gynecology that emerged in the early Qing Dynasty,was initially published as“A Treatise on Midwifery”in 1842 by William Lockhart,a British missionary to China.In 1894,John G.Kerr,an American missionary,translated the text as“The Tat Shang Pin”.This paper conducts a comparative study of the two English translations using a self-constructed English-Chinese parallel corpus of Da Sheng Bian.The study explores the translation styles of the two translators by examining the token-types ratio and frequency at the lexical level,mean sentence length at the syntactic level,and the use of conjunctions at the discourse level.The observed differences in translation styles between the two translations are analyzed in relation to the translators’backgrounds and translation strategies.

“道”文化心灵精神及其对中国文学的话语塑造

“道”作为中国文化的至高范畴和终极据点,在“思想-言说”结构及文化心灵方面形成了“道说希声”这一内在规训及根本特质。而正是“道说希声”,根本性地塑造了中国文化以“致和”“成善”“养德”为基本心灵特征与价值追求、以“乐和”“忧患”“静朴”“逍遥”为根本精神、以“经世致用”与“味美趣美”为艺术审美追求的“道”文化心灵精神。“道”文化心灵精神作为一种深层性、稳定性、基因型的结构力量,不仅对中国传统文化整体及其历史发展有着根本的轨导与牵制的作用,而且深刻影响和决定了中国文学及文论的话语形态与话语体系,建构和生成了中国文学及文论追求大宇宙及大生命关怀、致力感物抒怀、以“意象-语象”为中心(“象本位”)、基于“道”的核心范畴性表达等结构性特征。

正德、利用、厚生:“春秋三事”的现代阐释与中国人文经济学构建

中国人文经济学的产生,是马克思主义与中国具体实际和中华优秀传统文化相结合的结果。中国人文经济学的构建和发展,一方面要采用现代科学方法,另一方面要发扬中国人文传统。中国经济学的科学方法来源于马克思主义和现代科学的基本理念,而中国人文传统是中国人民通过观乎天文,观乎人文,彰往察来,显微阐幽,经数千年而形成的历史文脉。“春秋三事”是中国古代圣贤总结历史经验提出的基本政治经济理念,具体来说就是要合理利用天地之间各种资源,并在此基础上做好三件事,即正德、利用、厚生,并将“三事”统合协调,执中惟和,从而实现人民安乐,万世永赖。所以,正德、利用、厚生成为中国历代国家和社会治理的基本原则。本文认为,“春秋三事”经马克思主义的现代阐释,并与现代市场经济理论结合,可以作为中国人文经济学构建的基础框架。

基于主从博弈的多虚拟电厂动态定价与优化调度

在“双碳”背景下,分布式可再生能源以及储能、需求响应等灵活性资源快速发展,虚拟电厂通过控制技术将分布式资源高效整合,提高了分布式能源发电效益。随着社会资本进入电力市场,不同虚拟电厂将会属于不同的投资商,形成多主体博弈格局,根据投资商投资偏好,虚拟电厂将由不同灵活性的资源构成。为兼顾虚拟电厂运营商和虚拟电厂利益,文章构建了运营商和多虚拟电厂双层主从博弈模型,考虑上层定价与下层出力的相互影响,研究运营商动态价格制定和虚拟电厂优化运行调度问题。下层以各虚拟电厂运行成本最小为目标,分别建立含有电储能、需求响应和氢储能的多虚拟电厂优化调度模型;上层以运营商利润最大为目标,结合下层出力计划进行虚拟电厂购售电价动态制定。采用粒子群算法迭代求解博弈模型,通过算例分析,该模型能够兼顾多主体利益,有效提高运营商收益并降低虚拟电厂运行成本。

抗-E、抗-c、抗-M、抗-S多重抗体分析

目的对1例存在多重抗体的肾积水伴输尿管结石合并休克老年患者进行抗体特异性鉴定。方法微柱凝胶法进行红细胞不规则抗体筛查和抗体鉴定,酶法,抗体吸收法协助判断患者的抗体特异性;盐水试管法检测患者ABO血型鉴定、Rh血型鉴定、MNS血型。结果患者血型:O、CCDee、NNss,患者体内检测出抗-E、抗-c、抗-M、抗-S联合抗体。结论反复输血可能引起患者存在1种或者多种意外抗体,体内多种或高频率抗体的患者,可能引起鉴定困难和用血延迟。

沙利度胺对裸鼠移植骨髓瘤达雷妥尤单抗耐药的逆转作用及其机制

目的观察沙利度胺对裸鼠移植骨髓瘤达雷妥尤单抗耐药的逆转作用,并探讨相关机制。方法将Balb/c裸鼠分为空白组、模型组、实验组,每组10只,模型组与实验组取对数生长期的裸鼠浆细胞瘤细胞MPC-11接种到裸鼠的右腋窝,建立裸鼠皮下骨髓瘤模型。实验组分别于成瘤后第1天、第8天皮下注射达雷妥尤单抗144 mg/kg,在第1次皮下注射达雷妥尤单抗注射后48 h给予沙利度胺15 mg/kg每天1次灌胃,空白组与模型组每日给予蒸馏水灌胃。实验组检测在注射达雷妥尤单抗不同时间点的NK细胞耗竭情况;实验组在裸鼠首次给予达雷妥尤单抗前、注射达雷妥尤单抗后NK细胞耗竭点、给予沙利度胺第3天及第二次给予达雷妥尤单抗前检测NK细胞变化情况;实验结束后统一采用流式细胞术检测各组NK细胞数量及CD38表达情况,采用ELISA法检测IL-15、IFN-γ、TNF-α。结果注射达雷妥尤单抗后,实验组NK细胞数量先呈上升趋势,在24 h达最高,之后呈下降趋势。模型组NK细胞数低于空白组,实验组NK细胞数高于模型组(P均<0.01)。模型组CD38表达高于空白组,实验组CD38表达低于模型组(P均<0.01)。首次给予达雷妥尤单抗前、注射达雷妥尤单抗后NK细胞耗竭点、给予沙利度胺第3天及第二次给予达雷妥尤单抗前,实验组裸鼠NK细胞数量分别为3.25±0.23、12.65±1.27、26.48±0.66、37.67±1.45,呈上升趋势。模型组血清IL-15、IFN-γ、TNF-α水平高于空白组,实验组血清IL-15、IFN-γ水平高于空白组(P均<0.05)。实验组血清IFN-γ、TNF-α水平低于模型组(P均<0.01)。结论NK细胞耗竭是骨髓瘤细胞达雷妥尤单抗耐药的重要原因之一,沙利度胺可能通过缓解NK细胞耗竭、调节炎症因子表达从而逆转小鼠移植骨髓瘤对达雷妥尤单抗的耐药。

新时代教育评价体系的价值定位:国际趋势与中国方案

教育评价体系的价值定位是指人们在开展评价过程中遵循的准则、理念或偏好,体现在各领域的评价样态之中。近十年来,发达国家在教育评价改革中存在服务发展、精准刻画、多元参与这三类主要价值定位,我国新时代教育评价改革亦对这些价值导向有所探索。进一步构建新时代具有中国特色的教育评价体系的价值体系,需要构建以学生全面发展为核心的教育评价价值体系,以立德树人为根本遵循统合“服务发展”的价值定位,以开放的态度对待“精准刻画”的技术倡议并加强研究澄清,加强“多元参与导向”的制度化建设。

MOOCDR-VSI:一种融合视频字幕信息的MOOC资源动态推荐模型

学习者在面对浩如烟海的在线学习课程资源时往往存在“信息过载”和“信息迷航”等问题,基于学习者的学习记录,向学习者推荐与其知识偏好和学习需求相符的MOOC资源变得愈加重要.针对现有MOOC推荐方法没有充分利用MOOC视频中所蕴含的隐式信息,容易形成“蚕茧效应”以及难以捕获学习者动态变化的学习需求和兴趣等问题,提出了一种融合视频字幕信息的动态MOOC推荐模型MOOCDR-VSI,模型以BERT为编码器,通过融入多头注意力机制深度挖掘MOOC视频字幕文本的语义信息,采用基于LSTM架构的网络动态捕捉学习者随着学习不断变化的知识偏好状态,引入注意力机制挖掘MOOC视频之间的个性信息和共性信息,最后结合学习者的知识偏好状态推荐出召回概率Top N的MOOC视频.实验在真实学习场景下收集的数据集MOOCCube分析了MOOCDR-VSI的性能,结果表明,提出的模型在HR@5,HR@10,NDCG@5,NDCG@10,NDCG@20评价指标上比目前最优方法分别提高了2.35%,2.79%,0.69%,2.2%,3.32%.

湖泊流域生态系统演化对人类世研究的重要意义

人类世可能成为一个全新的地质时期,以描述人类活动对地球环境造成极为深远的影响,目前已被广泛讨论。湖泊及流域生态系统作为与人类社会最密切的地球单元之一,受到人类活动显著影响,相关研究成果能为理解人类世做出贡献。本文从湖泊流域生态系统和人类世本身特征为切入点,讨论了湖泊及流域生态系统演化对人类世研究的重要意义。我们认为,湖泊具有相对独立的整体,清晰的内部作用关系、完备的理论支持和时空数据支撑,能够为人类世地球各圈层交互作用提供研究框架。湖泊流域生态系统演化的稳态转换与地球环境进入新的地质时期具有诸多相似之处,相关研究成果能够更好地界定人类世开始时间、总体特征以及演变过程和机制。本文指出人类世湖泊及流域生态系统演化研究依然面临诸多挑战,并提出了对未来相关研究的展望。

东海OBN和三维DAS-VSP数据的联合采集与处理方法研究

近年来,光纤传感技术已经应用于地面地震数据、海洋地震数据、井中地震数据和井地联合地震数据的采集,推动了光纤传感技术在地球物理特别是地震数据采集中的应用。井地或井海联合地震勘探是陆地或海洋三维地震与三维DAS-VSP勘探相结合形成的三维立体地震勘探方法,利用井海联采的三维DAS-VSP数据,可以获得地下井周围准确的时深关系、地层速度、反褶积算子、球面扩散补偿因子、吸收衰减因子、各向异性参数和井筒周围的高分辨率构造成像,这些参数可以基于井驱处理提高陆地或海洋三维地震数据的处理质量。在中国东海某OBN数据勘探中首次开展了井下套管内铠装光缆同步采集的三维DAS-VSP数据的处理方法研究以及成像处理。首先,采用常规的三维VSP数据成像处理技术对三维DAS-VSP数据进行常规处理,具体处理流程包括:观测系统定义、预处理、初至拾取、静校正、振幅补偿、反褶积、波场分离、速度分析与建模和利用上行反射波进行井周围地层的构造成像;然后,再根据海上三维DAS-VSP数据下行多次波的特点,研发了海上三维DAS-VSP数据的下行多次波成像技术,扩展了三维DAS-VSP数据成像范围,提高了三维DAS-VSP数据成像的整体质量。与本工区早期的三维OBC数据成像结果相比,本次三维DAS-VSP数据的下行多次波成像结果表明,井周围三维构造成像质量得到了显著改进,大幅度扩展了成像范围;新采集的OBN数据和三维DAS-VSP数据的成像结果展示了更为详细和较高分辨率的构造成像,基于新的成像资料,对储层顶部和储层内流体的识别与追踪变得更加容易和清晰。井海联采技术生产效率高且成本低,既能快速获得三维DAS-VSP数据及成像,还能对三维海洋地震数据进行井驱提高分辨率处理。此外,三维OBN或OBC数据和三维DAS-VSP数据还能够进行融合处理,实现井地或井海同步采集数据的联合偏移成像,可以大幅度提高三维海洋地震数据的成像品质,值得在有条件的地方推广应用。

血凝酶用于多发性创伤患者院前急救的价值分析

目的探讨血凝酶用于多发性创伤患者院前急救的价值。方法选取2019年4月至2022年4月北京急救中心收治的104例多发性创伤患者作为研究对象,根据患者是否应用血凝酶分为观察组(常规院前急救并应用血凝酶治疗,n=52)与对照组(常规院前急救治疗,n=52)。比较2组患者的止血时间、平均出血量、单位面积出血,比较2组患者治疗前后的血红蛋白(Hb)、红细胞压积(HCT)、血小板聚集率(PAR)、凝血酶原时间(PT)、部分凝血活酶时间(APTT)、纤维蛋白原(FIB)、D-二聚体(D-D)、抗凝血酶Ⅲ(AT-Ⅲ)、组织型纤溶酶原激活物(t-PA)、纤溶酶原激活物抑制剂-1(PAI-1),比较2组患者的并发症、不良反应。结果观察组止血时间、平均出血量、单位面积出血均少于对照组(P<0.05);治疗后2组Hb、HCT、PAR水平低于治疗前,观察组高于对照组(P<0.05);2组患者治疗前后,PT、APTT、FIB、D-D、PAI-1、AT-Ⅲ、t-PA水平比较差异无统计学意义(P>0.05)。治疗后,2组患者并发症总发生率比较差异无统计学意义(P>0.05),观察组病死率低于对照组(P<0.05);观察组不良反应发生率为5.77%,对照组不良反应发生率为0,差异无统计学意义(χ^(2)=3.089,P=0.079)。结论多发性创伤患者院前急救应用血凝酶可减少出血量,对患者的凝血和纤维蛋白溶解功能无影响,安全性良好,有利于患者预后的改善。

基于曲波域模型优化的多次波压制方法在浅地层剖面的应用

浅地层剖面主要用来探查海底的浅部构造和浅部资源,但因地震数据采集时受水深和海底地质条件等的影响,多次波极其发育,并且多次波能量强、频带宽,常规的自由表面多次波压制方法很难取得较好的压制效果。基于此,将地震数据自身褶积产生的多次波模型分为低频段模型和高频段模型,同时,将原始数据分为低频段数据和高频段数据,利用多个自适应相减法优化低频段模型;而对于高频段数据和高频段模型,将其转换到曲波域,比较其不同尺度、不同角度的差异,然后,对高频段模型进行优化,最后,将优化后高频段模型和低频段模型相加,得到最终优化后的多次波模型,再将其从原始数据中直接减去,以达到压制浅地层剖面中多次波的目的。实际资料的应用结果表明,该技术对多阶的海底相关多次波和强界面产生的多次波的压制效果较好,剖面的信噪比得到明显提高,有效信号得以凸显,有利于后期资料的应用。

支撑新能源电力系统灵活性需求的用户侧资源应用与关键技术

伴随着传统电力系统向以新能源为主体的新型电力系统转型升级,高比例新能源的接入和传统机组占比下降导致电力系统灵活性产生缺额。电动汽车、数据中心、P2X(power-to-X)等需求侧资源可以在多时间尺度为电力系统提供灵活性,是新型电力系统灵活性的重要组成部分。该文首先描述高比例新能源背景下输电网和配电网在不同时间尺度的灵活性需求,然后对比总结了典型需求侧资源的调节特性与应用实践,研究了需求侧资源在支撑高比例新能源输电网和配电网中运行、规划2个层面多时间尺度灵活性需求的应用场景。最后针对未来需求侧资源的研究重点,从聚合技术、电碳协同优化调控策略、可信调节能力量化和通信与信息交换标准等角度,对支撑新型电力系统需求侧资源应用的关键技术进行了总结与展望。