Darboux Transformations and New Explicit Solutions for a Blaszak-Marciniak Three-Field Lattice Equation

In this paper, the two different Darboux transformations for a Blaszak-Marciniak （BM） three-field lattice equation are constructed. As the applications of the obtained Darboux transformations, new explicit solutions for the BM lattice are given. We also discuss some properties for these new explicR solutions. Our analysis shows that the explicit solutions possess new characters.

Three Dimensional Transformations in the Film Subtitle Translation

Film plays an indispensable part in cultural exchange. However, current scholars' studies on the film subtitle translation are less than literary translation. There exists no systematic strategy and theory guiding it, and there still exists some problems.This paper introduces eco-translatology to film subtitle translation. Eco-translatology proposes that translation is an alternative cycle of translators' adaptation and selection activities in translational eco-environment. The translation method focuses on threedimensional transformation, namely linguistic, cultural and communicative dimensions.

General three-dimensional thermal illusion metamaterials

Thermal illusion aims to create fake thermal signals or hide the thermal target from the background thermal field to mislead infrared observers,and illusion thermotics was proposed to regulate heat flux with artificially structured metamaterials for thermal illusion.Most theoretical and experimental works on illusion thermotics focus on two-dimensional materials,while heat transfer in real three-dimensional(3D)objects remains elusive,so the general 3D illusion thermotics is urgently demanded.In this study,we propose a general method to design 3D thermal illusion metamaterials with varying illusions at different sizes and positions.To validate the generality of the 3D method for thermal illusion metamaterials,we realize thermal functionalities of thermal shifting,splitting,trapping,amplifying and compressing.In addition,we propose a special way to simplify the design method under the condition that the size of illusion target is equal to the size of original heat source.The 3D thermal illusion metamaterial paves a general way for illusion thermotics and triggers the exploration of illusion metamaterials for more functionalities and applications.

Three-dimensional reconstruction of precession warhead based on multi-view micro-Doppler analysis

The warhead of a ballistic missile may precess due to lateral moments during release. The resulting micro-Doppler effect is determined by parameters such as the target's motion state and size. A three-dimensional reconstruction method for the precession warhead via the micro-Doppler analysis and inverse Radon transform(IRT) is proposed in this paper. The precession parameters are extracted by the micro-Doppler analysis from three radars, and the IRT is used to estimate the size of targe. The scatterers of the target can be reconstructed based on the above parameters. Simulation experimental results illustrate the effectiveness of the proposed method in this paper.

Three-Dimensional Density Distribution and Seismic Activity along the Guxiang–Tongmai Segment of the Jiali Fault,Tibet

The Guxiang-Tongmai segment of the Jiali fault is situated northeast of the Namche Barwa Syntaxis in northeastern Tibet.It is one of the most active strike-slip faults near the syntaxis and plays a pivotal role in the examination of seismic activity within the eastern Himalayan Syntaxis.New study in the research region has yielded a 1:200000 gravity dataset covering an area 1500 km^(2).Using wavelet transform multiscale decomposition,scratch analysis techniques,and 3D gravity inversion methods,gravity anomalies,fault distributions,and density structures were determined across various scales.Through the integration of our new gravity data with other geophysical and geological information,our findings demonstrate substantial variations in the overall crustal density within the region,with the fault distribution closely linked to these density fluctuations.Disparities in stratigraphic density are important causes of variations in the capacity of geological formations to endure regional tectonic stress.Earthquakes are predominantly concentrated within the density transition zone and are primarily situated in regions of elevated density.The hanging wall stress within the Guxiang-Tongmai segment of the Jiali fault exhibits a notable concentration,marked by pronounced anisotropy,and is positioned within the density differential zone,which is prone to earthquakes.

On the Implementation of the Method of Derivation of Lorentz Transformations Used by Einstein

The Lorentz transformations are the mathematical basis of Einstein’s theory of special relativity. We conduct a thorough examination of the method of derivation of the Lorentz transformations used by Einstein and identify the cause of the incorrect implementation of the method. The cause is related to the incorrect proof of the equality φ(v)=1for the unknown function φ(v)arising in the process of derivation of the Lorentz transformations. We develop proof of the equality φ(v)=1and eliminate the cause of the incorrect implementation of the method of derivation of the Lorentz transformations used by Einstein.

How Software Engineering Transforms Organizations: An Open and Qualitative Study on the Organizational Objectives and Motivations in Agile Transformations

Agile Transformations are challenging processes for organizations that look to extend the benefits of Agile philosophy and methods beyond software engineering.Despite the impact of these transformations on orga-nizations,they have not been extensively studied in academia.We conducted a study grounded in workshops and interviews with 99 participants from 30 organizations,including organizations undergoing transformations(“final organizations”)and companies supporting these processes(“consultants”).The study aims to understand the motivations,objectives,and factors driving and challenging these transformations.Over 700 responses were collected to the question and categorized into 32 objectives.The findings show that organizations primarily aim to achieve customer centricity and adaptability,both with 8%of the mentions.Other primary important objectives,with above 4%of mentions,include alignment of goals,lean delivery,sustainable processes,and a flatter,more team-based organizational structure.We also detect discrepancies in perspectives between the objectives identified by the two kinds of organizations and the existing agile literature and models.This misalignment highlights the need for practitioners to understand with the practical realities the organizations face.

Transformations in medical education:A prudential perspective

1 | BACKGROUND.A decade ago we asked the question, “Is there something inmedicine that is eternal or enduring?” Our aim was to writea manuscript entitled, “That which does not change inmedicine.” The publication begins as follows: “The practiceof medicine involves continual change, driven by a constantstream of developments in the understanding of biologicalstructure and function relevant to human diseases, and theparallel improvements in pharmacologic and other technologicalinterventions. This change is also driven by evolvingsocial philosophies, ethical trends, and lifestyles.” [1] Thatpreamble reverberates as strongly now as then, perhapseven more so, given the velocity of technological change.When we deliberated on which aspects of medical practiceshould remain stable, we had few premonitions thatimplantable chips, robotic surgery, virtual reality, andartificial intelligence (AI) would soon become ubiquitous.The needle has clearly moved, propelled by extraordinaryadvances in bioengineering, computer and data sciences;major shifts in the governance and organization of clinicalpractice;and powerful sociocultural trends.

Historical Changes,Contemporary Characteristics,and Five Transformations of Environmental Design in China

Starting from the characteristics of modernization in three different historical stages since the founding of the People’s Republic of China,this paper analyses the internal changes in the professional name,subordinate disciplines and categories,and professional mission of the environmental design profession,and summarizes the changes in the characteristics of the environmental design profession in 10 aspects such as subordinate disciplines,design objects,design types,cultural characteristics,and aesthetic values on the basis of the results of the analysis,and explores five transformations of the environmental design profession in the process of China’s development in the future.The five transformations in the future development of China are to serve the harmony and beauty of the three major urban and rural spaces with“small and micro-renewal and reconstruction”;to serve the transmission of Chinese culture and the spread of Chinese civilization with“spatial heritage and innovation”;to serve the balance and sufficiency of the four functions of urban and rural settlements with“friendliness and equilibrium”;to serve the intelligence,wisdom,and enjoyment of indoor and outdoor living environment space with“scientific and technological achievements”;and to serve the co-construction,co-management,and sharing of indoor and outdoor public space in urban and rural areas with“public participation.”

基于Transformer模型的时序数据预测方法综述

时序数据预测(TSF)是指通过分析历史数据的趋势性、季节性等潜在信息,预测未来时间点或时间段的数值和趋势。时序数据由传感器生成,在金融、医疗、能源、交通、气象等众多领域都发挥着重要作用。随着物联网传感器的发展,海量的时序数据难以使用传统的机器学习解决,而Transformer在自然语言处理和计算机视觉等领域的诸多任务表现优秀,学者们利用Transformer模型有效捕获长期依赖关系,使得时序数据预测任务取得了飞速发展。综述了基于Transformer模型的时序数据预测方法,按时间梳理了时序数据预测的发展进程,系统介绍了时序数据预处理过程和方法,介绍了常用的时序预测评价指标和数据集。以算法框架为研究内容系统阐述了基于Transformer的各类模型在TSF任务中的应用方法和工作原理。通过实验对比了各个模型的性能、优点和局限性,并对实验结果展开了分析与讨论。结合Transformer模型在时序数据预测任务中现有工作存在的挑战提出了该方向未来发展趋势。

小数据集上基于语义的局部注意视觉Transformer方法

在小数据集上从零开始训练时,视觉Transformer无法与同规模的卷积神经网络媲美。基于图像的局部注意力方法,可以显著提高ViT的数据效率,但是会丢失距离较远但相关的补丁之间的信息。为了解决上述问题,提出一种双向并行局部注意力视觉Transformer的方法。该方法首先在特征层面上对补丁进行分组,在组内执行局部注意力,以利用特征空间中补丁之间的关系弥补信息丢失。其次,为了有效融合补丁之间的信息,将基于语义的局部注意力和基于图像的局部注意力并行结合起来,通过双向自适应学习来增强ViT模型在小数据上的性能。实验结果表明,该方法在计算量为15.2 GFLOPs和参数量为57.2 M的情况下,分别在CIFAR-10和CIFAR-100数据集上实现了97.93%和85.80%的准确性。相比于其他方法,双向并行局部注意力视觉Transformer在增强局部引导能力的同时,保持了局部注意力所需属性的有效性。

基于单目RGB图像的三维手部姿态估计方法

现有的三维手部姿态估计方法大多基于Transformer技术,未充分利用高分辨率下的局部空间信息,为此提出基于改进FastMETRO的三维手部姿态估计方法.引入可变形注意力机制,使得编码器的设计不再受限于图像特征序列长度;引入交错更新多尺度特征编码器来融合多尺度特征,强化生成手部姿态;引入图卷积残差模块来挖掘网格顶点间的显式语义联系.为了验证所提方法的有效性,在数据集FreiHAND、HO3D V2和HO3D V3上开展训练及评估实验.结果表明,所提方法的回归精度优于现有先进方法,在FreiHAND、HO3D V2、HO3D V3上的普鲁克对齐-平均关节点误差分别为5.8、10.0、10.5 mm.

一种农杆菌介导的糜子高效遗传转化方法

糜子(Panicum miliaceum L.)是我国传统的粮食作物,截至目前,针对糜子遗传转化方法的研究仍较少,本研究旨在建立农杆菌介导的糜子高效遗传转化方法。以糜子品种冀黍5号的成熟种子为外植体,在CIM和MSD诱导培养基上分别诱导糜子的胚性愈伤,以其作为转化受体材料,用含植物表达载体的农杆菌侵染60min并共培养6d,转接至含0.025g/L潮霉素的筛选培养基上筛选出抗性愈伤,接着在含0.015g/L潮霉素的分化培养基上分化,最后在含0.015g/L潮霉素的生根培养基上生根成苗,用载体特异性引物对再生植株进行PCR检测,鉴定其是否为阳性转基因植株。根据多个批次的转化实验统计糜子的抗性再生植株的筛选效率和转化效率。结果表明:CIM和MSD诱导培养基均能诱导出糜子胚性愈伤,但CIM培养基诱导的糜子胚性愈伤效果更好;糜子胚性愈伤在被农杆菌侵染及与农杆菌共培养后,经在含潮霉素的培养基上筛选、分化和生根后获得多株抗性再生糜子植株,3次试验获得的糜子抗性再生植株的PCR鉴定阳性率为100%,平均转化效率为30%以上。本研究成功建立了农杆菌介导的糜子遗传转化方法,操作简单,转化效率高,成本低廉,且转化不受季节限制,能规模化开展,为糜子的遗传改良提供有效的技术手段。

数字化转型助力儿童友好型医院建设研究

分析了儿童医院数字化转型的发展现状,探讨了转型过程中遇到的困难和挑战。以上海市儿童医院数字化转型实践为案例,进行了详尽的应用实施分析与效果评估,并对儿童医院数字化转型的未来发展方向进行了深入探讨。实践表明,数字化转型不仅是儿童友好型医院建设的核心驱动力,更是促进儿童医院业务创新与流程优化的重要引擎,为儿童医院提供了更加友好、高效的服务能力。

政府数字化转型何以提升城市治理质量?——基于国内五个超大城市的多案例考察

政府数字化转型作为治理现代化的关键变革与创新举措,是推动超大城市高质量发展的重要手段。政府数字化转型促进经济发展、提升治理效率、保护生态环境、优化公共服务,显著提升城市治理质量。基于治理环境的调节作用,政府通过加强基础设施与平台建设间接提高城市治理的高效性和政府决策的科学性、准确性。优化顶层设计与政策扶持,促进数字化转型与城市治理质量的良性互动,构建高效城市治理体系。营造良好治理环境,确保数字化转型有力助推城市高质量发展。因城施策,充分发挥城市独特优势,推进政府数字化转型进程。

局部特征增强的磁Transformer重构

研究了一种基于多头自注意力与卷积特征融合的磁共振图像Transformer重构方法.采用U型网络结构,通过学习图像的多尺度特征以提升重构性能.采用深度分离卷积与多头自注意力融合的Swin Transformer结构,改善网络的特征学习能力.在CC359-Brain数据集下基于多种采样模式进行仿真实验,结果证明了该方法在提升磁共振图像重构质量与降低系统复杂度方面的有效性.

数字化与绿色化协同转型如何赋能高质量发展——来自中国上市公司的证据

当前中国正处于数字化与绿色化两大战略历史交汇点,探索数字化和绿色化协同转型如何赋能经济高质量发展具有十分重要的现实意义。通过构建企业层面数字化与绿色化协同转型指标,以2007—2022年中国上市公司为研究样本,探究双化协同对企业高质量发展的影响。研究发现,相较于数字化或绿色化单一转型,双化协同能够更高效地提升企业全要素生产率,赋能企业高质量发展。机制分析发现,双化协同会综合单一转型优势,同时产生资源协同效应和创新协同效应优化企业资源配置、拓展企业知识宽度和提升企业创新质量,进而有效地驱动企业高质量发展。异质性分析发现,在内部特征方面,双化协同对国有、大规模以及重污染企业高质量发展的促进作用更大;在外部环境方面,双化协同对高质量发展的提升作用更易在处于市场竞争程度更大、环境规制强度更高,以及经营环境不确定性程度更低的企业中得到充分体现。因此,应加强顶层设计和体制机制优化,确保数字化与绿色化两大战略的有效实施和深度融合;企业要认清双化协同的积极效能,助力企业高质量发展;企业要深入了解其面临的内外部环境特征,以最大化双化协同的经济效用。

农业数字化转型的国际经验、本土实践和政策启示

农业数字化转型通过智能化、高效化生产,能够更好地适应市场需求和资源环境变化,实现农业可持续发展。在实现农业数字化发展中,欧盟以“共享”的信息传递系统建设、“开放”的区域集群构建以及“绿色”要素的反向驱动为主,美国以集约化和规模化农业生产方式、市场机制引入和社会资本引导以及数字技术推广体系建设为主,日本以发展精细化数字农业、政府和农协协同推进以及数字技术创新驱动为主。中国摸索出了“政府主导+多主体融合”“农业龙头企业主导+政策扶持”“科研机构主导+产学研融合”和“能人带动+示范引领”4种适合中国农情的发展路径,但也面临政府主导的数字化项目缺乏可持续性、未能充分发挥社会组织的潜力与功能、农业规模化程度低和绿色消费市场信任缺失等问题。为此,应构建各地区的数据信息获取的联动机制、制定市场普遍严格遵循的绿色生产监管机制、推动农业组织向规模化和集约化方向发展、推动农业科研机构市场化运营以及充分发挥农业协会等社会组织的作用。

教育数字化转型进程中城乡教师协作教学的影响因素研究

明确哪些因素在教育数字化转型中支持了城乡教师之间的协作教学,研究活动采用田野工作观察、访谈与问卷调查相结合的方法,基于“四平衡”监控和学习型组织理论构建“三层级七要素模型”,并运用结构方程模型分析了问卷数据.研究发现:教师数字胜任力是核心影响要素,学校组织支持通过教师数字胜任力的中介作用间接影响协作教学;数字教学资源对协作教学有显著影响.针对这些发现,建议进一步落实组织支持,强化数字化领导场景,有效推进数字能力建设,确保数字化技术的优势能够转化为实际教学胜势;应促进数字教学资源创新应用,增强教育数字化转型的实效性和适应性.

基于稀疏注意力卷积ViT模型的锌浮选工况识别

准确识别锌浮选工况并用于指导锌浮选操作,可以提高浮选效率、优化选矿过程.目前浮选现场主要通过人工肉眼观察泡沫并依据经验判断工况,这种方法主观性强,难以客观准确地评价锌浮选工况.针对该问题,本文通过研究锌浮选泡沫视觉特征和浮选工况的密切联系,提出基于稀疏注意力卷积ViT模型的锌浮选工况识别方法.首先,所提模型融合了卷积神经网络(Convolutional neural networks,CNN)和视觉Transformer(Vision transformer,ViT)的结构和优点,同时感知泡沫局部空间信息和全局信息,完备表征泡沫图像.其次,模型引入稀疏的多头注意力机制,每个注意力头以不同的稀疏程度处理特征,从不同尺度下感知全局信息,同时引入注意力门控单元优化特征传递,最终实现锌浮选工况识别.实验结果表明,本文所提工况识别方法在锌浮选泡沫图像数据集上的准确率达到88.62%,解决了传统CNN和ViT模型不能充分利用泡沫图像全局信息,且无法自适应捕捉泡沫图像重要特征的问题,为浮选流程优化提供有力支持.