Stylistic Analysis of Hillary＇s Inspiring Speech in Yale University

Stylistics is an interdisciplinary study which applies modem linguistic theories and approaches to research style of language use. Taking stylistics as a base, this paper gives a detailed analysis of stylistic devices used in Hillary＇s Inspiring Speech in Yale University from the perspective of linguistic description, textual analysis and situational factors, and then explores the general stylistic features of public speech, thus providing some enlightenment for public speakers in the future.

平衡车车架拓扑优化设计与仿真分析

目的本研究以平衡车车架为研究对象,旨在满足模型强度与刚度约束条件的前提下,通过拓扑优化设计实现车架质量的减轻,从而为平衡车车架的轻量化设计提供参考。方法首先,通过SolidWorks软件建立车架的三维模型,然后利用ANSYS Workbench对原始车架进行静力学分析,以获取车架的应力分布情况。在此基础上,采用AltairInspire软件对原模型进行拓扑优化,优化目标是减少车架的质量。结果经过拓扑优化设计,得到了优化后的重构模型。与原始车架相比,优化后的车架质量减少了约54.0%。虽然优化后的车架在满足使用规范的前提下,米塞斯应力有所上升,但仍小于材料的屈服强度,确保了车架的安全性和稳定性。结论本研究通过拓扑优化方法有效地减少了平衡车车架的质量,同时保持了必要的结构强度和刚度。尽管优化后车架的应力有所增加,但仍在材料允许范围内,证明了拓扑优化在车架轻量化设计中的可行性。该方法为未来平衡车车架部件的设计和改进提供了新的思路和参考。

Inspiring Questions from the Sea of Examinations——题海拾贝

1 A dozen(12个)Ping-Pong balls are num-bered from 1 to 12.Tom separated the balls into twogroups and noticed that the sum of the numbers onthe balls in the first group equaled the sum of thenumbers on the balls in the second group.What isthe common sum(依次求这两组乒乓球上的数字和)?有12个乒乓球,每个乒乓球上分别标有从1到12的一个数字.汤姆把这些乒乓球分成两组,发现两组乒乓球上的数字和相等,求这两组乒乓球上的数字和是多少?

面向增材制造技术的四旋翼无人机底座拓扑优化设计

利用Inspire软件对四旋翼无人机底座进行拓扑优化和轻量化设计。首先根据逆向工程技术得到四旋翼无人机底座的三维模型,然后将三维模型导入到Inspire软件进行有限元分析和拓扑优化。结果显示:无人机底座优化前的质量为66.158 g(材料ABS),通过轻量化设计之后的质量为30.218 g,实现了54.32%的减重,同时,最大米塞斯等效应力为3.213MPa,最大位移为0.190 9 mm,最小安全系数为14,减重后的性能满足要求。最后利用3D打印方法将优化后的底座打印出来,并试验验证了拓扑优化方法的合理性和可行性。

基于Altair Inspire的四旋翼无人机机身部件轻量化设计方法

无人机的续航能力是其性能优劣的一个重要指标,而影响续航的最主要因素是机身的质量,为了减轻无人机机身部件质量,利用Altair Inspire轻量化设计软件,对一种四旋翼无人机机身部件进行拓扑优化,几何重构、强度校核、并自动拟合重构得到优化模型,优化后的该模型仍存在一些缺陷,最后通过手动拟合重构得到进一步优化,达到在强度、最大位移和最小安全系数满足条件的情况下,尽可能减轻模型的质量,以达到轻量化的设计目的。结果表明,在满足强度、最大位移和最小安全系数要求的条件下,实现了71.8%的减重,有效减轻了质量,提高了无人机的续航能力,为无人机的轻量化设计提供了一种可行的方法。

Adaptive Network Sustainability and Defense Based on Artificial Bees Colony Optimization Algorithm for Nature Inspired Cyber Security

Cyber Defense is becoming a major issue for every organization to keep business continuity intact.The presented paper explores the effectiveness of a meta-heuristic optimization algorithm-Artificial Bees Colony Algorithm(ABC)as an Nature Inspired Cyber Security mechanism to achieve adaptive defense.It experiments on the Denial-Of-Service attack scenarios which involves limiting the traffic flow for each node.Businesses today have adapted their service distribution models to include the use of the Internet,allowing them to effectively manage and interact with their customer data.This shift has created an increased reliance on online services to store vast amounts of confidential customer data,meaning any disruption or outage of these services could be disastrous for the business,leaving them without the knowledge to serve their customers.Adversaries can exploit such an event to gain unauthorized access to the confidential data of the customers.The proposed algorithm utilizes an Adaptive Defense approach to continuously select nodes that could present characteristics of a probable malicious entity.For any changes in network parameters,the cluster of nodes is selected in the prepared solution set as a probable malicious node and the traffic rate with the ratio of packet delivery is managed with respect to the properties of normal nodes to deliver a disaster recovery plan for potential businesses.

基于Inspire的采摘机械臂结构优化设计

【目的】现有油茶采摘机的机械臂普遍存在设计冗杂且自重较大的问题,导致整体体积过大而无法在低矮的林区间隙穿行,亟需进一步推进采摘机械小型化、轻量化发展。【方法】以采摘机械臂的主臂为研究对象,从材料选型和结构优化两方面进行轻量化研究,以最大化刚度为设计目标,采用Altair Inspire软件的OptiStruct拓扑优化求解器,分析主臂零件的载荷工况和受力约束,对设计空间内的材料重新布局。【结果】1)铝合金材料的优化重构模型质量减轻了32%。2)优化后主臂的最大米塞斯应力为7.770 MPa,最大位移为0.07091 mm,虽然这两个参数有稍许提高,但仍远小于材料的屈服应力,且安全系数仍在较高水平。【结论】优化效果显著,有效地降低了零件的重量和成本,提高了零件的强度和耐用度,进一步提高了采摘机械臂的结构效益和经济效益。

Inter-Fraction Analysis of One Week Hypo-Fractionation of Deep Inspiration Breath Hold (DIBH) Technique for Left Sided Breast Cancer Radiation Treatment

The aim of this study was to investigate the inter-fraction variations, patient comfort and knowledge at Charlotte Maxeke Johannesburg Academic Hospital (CMJAH). The differences in set-up that occurred between treatment sessions for the left sided breast patients were observed and recorded. Measurements of routine set-up variation for 24 patients were performed by matching the cone beam computed tomography (CBCT) and the planning computed tomography (CT). Scans of all five fractions per patient were used to quantify the setup variations with standard deviation (SD) in all the three directions (anterior posterior, left right, and superior inferior). The patients DIBH comfort and knowledge was also evaluated. The average translational errors for the anterior posterior (AP, z), left-right (LR, x), and Superior-inferior (SI, y) directions were 0.40 cm, 0.40 cm, and 0.40 cm, respectively. The translation variation of the three directions showed statistical significance (P < 0.05). On comfort and knowledge investigation, among all participants, 80% moderately agreed that the therapist’s instructions for operating the deep inspiration breath hold (DIBH) technique were easy to understand, and 63.33% indicated that their comfort with the DIBH technique was neutral or average. The inter-fraction variations in patients with left-sided breast cancer were qualitatively analyzed. Significant shifts between CBCT and planning CT images were observed. The daily treatment verification could assist accurate dose delivery.

基于Inspire的新能源汽车轮毂轻量化设计

新能源汽车的轻量化设计旨在减少汽车的整体重量,提高新能源汽车的能源利用效率,增加行驶里程,是实现其长期发展的重要途径。本文利用Solidworks建立新能源汽车轮毂模型,在分析其实际受力情况的基础上,运用Altair Inspire软件以最大化刚度为目标对其进行轻量化设计,得到三种不同设计方案的位移、安全系数和米塞斯等效应力值,对比分析优缺点后,选取最佳优化设计方案。优化分析结果显示,轮毂质量为7.409,较优化前减轻了10.2%,在满足轮毂强度要求和安全性的前提下,实现了轮毂的轻量化,为后续优化设计提供了参考。

基于Altair Inspire的飞机襟翼支架轻量化优化设计

飞机襟翼支架是与其机翼连接的重要运动部件,为优化飞机襟翼支架结构,运用Altair Inspire软件对襟翼支架进行轻量化设计。在满足飞机机翼使用性能的条件下选用襟翼支架的材料为AL2014-AREO,依据10%、15%、30%体积约束目标下襟翼支架的优化结果,通过Poly NURBS自动拟合和手动拟合对优化模型进行几何重构与强度校核,得到最优轻量化模型。优化后的飞机襟翼支架的质量为46.31 g,比优化前下降了77.59%,极大地减轻了飞机襟翼结构的整体质量,并且优化后飞机襟翼支架的位移量、安全系数、米塞斯等效应力均符合设计要求。该研究为飞机襟翼支架的设计与改进提供了一种新思路。

基于Inspire软件的汽车减震器结构轻量化设计

在现代汽车工业中,悬挂系统的性能直接关联到行车的平稳性与舒适性,而减震器作为其核心组件,在减少震动、提升乘坐体验方面发挥着至关重要的作用。文章借助Inspire软件和拓扑优化技术,在优化步骤中引入了反馈机制以实现设计过程的动态调整,同时设计一套三阶段方案的筛选流程,保证对减震器结构进行高效且有效的轻量化设计,从而提升减震器设计的性能与材料利用率。通过控制变量法探索不同方案下最优的轻量化设计为汽车减震器的创新及设计提供了可行方案。

The Ancient Silk Roads Historical Significance and Its Role in Inspiring Joint Development of the Belt and Road Initiative

The ancient Silk Road was the most extraordinary stage for exchange and integration between civilizations in human history. It enriched the progress of Eurasia in economic, political, cultural, and social terms for an extended historical period, and witnessed the and intellectual cultures of the East and West interact and blend together. The ancient Silk Road allowed for exchange of commodities, convergence of cultures, inclusiveness between civilizations, communication between peoples, and scientific and technological interaction, and thus enabled the people of all countries along its path to become authors of a grand epic of mutual economic benefit and cultural inspiration.

Inspiring Dialogue

An exclusive interview with Yang Rui, the renowned English-language host of the show Dialogue, on CCTV-9 By LIU PING On the 10-year anniver sary of the international channel CCTV-9 ’ s famous talk show Dialogue ,

一种含异形结构的汽车合装吊具设计与优化

为解决汽车合装吊具采用传统型材导致的自质量大、美观性欠佳及折弯处应力集中等问题,设计了一种以非均匀有理式B样条曲线(Non-Uniform Rational B-Spline,NURBS)为轮廓的异形吊臂结构。对吊臂结构进行用材分析,通过传统型材结构与异型结构的对比,提出一种以异型基本单元为结构主体的定制化设计流程。通过有限元分析软件对吊臂及吊具整体结构进行静力学分析,验证了结构设计的可行性;根据变密度法原理对吊臂结构进行轻量化设计,采用Inspire软件的OptiStruct求解器对其进行拓扑优化,得到3种轻量化结构方案并进行优选。综合考虑可能出现的复杂工况,对连接结构进行二次拓扑优化设计,得到最终结构优化方案,为机械装备的轻量化设计提供参考。

基于SIMP变密度法的工业机器人大臂拓扑优化设计

以某工业机器人机械大臂为研究对象,基于SIMP变密度法的拓扑优化数学模型思想,先使用ADAMS软件获得机器人大臂在最劣工况下的载荷情况,然后通过Altair Inspire软件,设置机器人大臂最劣工况载荷,对原始模型进行有限元分析,并以最大化刚度为优化目标,完成了机器人大臂的拓扑优化设计。通过对机器人大臂各种优化方案的对比,结果表明,在满足机器人大臂载荷、空间要求和刚度要求的前提下,减重率达26.28%,达到了机器人大臂轻量化设计的目的,并为相关结构件轻量化设计提供了参考。

基于Inspire的小型无人机机身轻量化设计方法

轻量化设计已广泛应用于制造等领域,它所涉及的结构与材料优化为工业制造带来了很大的突破,产品轻量化使得设计师遇到的种种困难被逐步攻克。研究使用了Inspire软件进行有限元分析、拓扑优化、运动分析等,针对快速的自动几何重构方法中常会出现的一些问题,提出满足优化条件的解决方法。以一种小型无人机结构部件为例,根据给定载荷、约束条件和性能要求,采用手动几何重构,在给定的设计空间内对材料分布满足可制造性和产品工艺性选择最优方案[1],从而有效的减少研发时间、物料消耗和减轻产品重量,具有一定的借鉴与推广价值。

基于Inspire的FSCC赛车悬架立柱优化设计及CAE分析

零件轻量化是机械制造领域的重要研究方向。以中国大学生方程式汽车大赛BTR-X的悬架立柱作为例,在分析其实际受力情况的基础上,利用Altair inspire form软件以最大化刚度为目标对其进行了减重设计和拓扑结构优化。得到了带刹入弯工况条件下两种不同设计方案的应力、应变值及安全系数,并对比了其优缺点。结果表明,在最佳优化方案中,BTR-X悬架立柱最大有效应力为557.4 MPa,减重18.4%,提升了车辆的操稳性,实现了其轻量化的目标,对进一步提升FSCC赛车的性能有一定的参考价值。最后,通过选择性激光烧结成功实现了优化悬架立柱结构的3D打印成型,为FSCC赛车的轻量化设计及加工提供了新思路。

基于Inspire软件的散热器支架轻量化拓扑优化设计

本文采用Altair Inspire软件对散热器支架进行了结构分析和拓扑优化,以提高支架的强度、刚度,同时降低支架的重量和成本。首先,根据散热器支架的几何形状、材料属性、载荷条件和约束条件,建立了有限元模型,并进行了线性静力学分析,得到了支架的应力、位移和安全系数分布。然后,利用Altair Inspire的拓扑优化功能,在满足强度、刚度和制造工艺约束的前提下,对支架进行了形貌优化,得到了更加轻量化新型支架模型。最后,对比分析了优化前后的支架模型及其结构性能指标,评价了优化效果。结果表明,Altair Inspire的拓扑优化方法,可以有效地改善散热器支架的结构性能,减少了71.48%的质量。

Hawk‐eye‐inspired perception algorithm of stereo vision for obtaining orchard 3D point cloud navigation map

The binocular stereo vision is the lowest cost sensor for obtaining 3D information.Considering the weakness of long‐distance measurement and stability,the improvement of accuracy and stability of stereo vision is urgently required for application of precision agriculture.To address the challenges of stereo vision long‐distance measurement and stable perception without hardware upgrade,inspired by hawk eyes,higher resolution perception and the adaptive HDR(High Dynamic Range)were introduced in this paper.Simulating the function from physiological structure of‘deep fovea’and‘shallow fovea’of hawk eye,the higher resolution reconstruction method in this paper was aimed at ac-curacy improving.Inspired by adjustment of pupils,the adaptive HDR method was proposed for high dynamic range optimisation and stable perception.In various light conditions,compared with default stereo vision,the accuracy of proposed algorithm was improved by 28.0%evaluated by error ratio,and the stability was improved by 26.56%by disparity accuracy.For fixed distance measurement,the maximum improvement was 78.6%by standard deviation.Based on the hawk‐eye‐inspired perception algorithm,the point cloud of orchard was improved both in quality and quantity.The hawk‐eye‐inspired perception algorithm contributed great advance in binocular 3D point cloud recon-struction in orchard navigation map.

基于拓扑优化的飞机襟翼支架轻量化设计

以飞机襟翼支架为研究对象,基于最大刚度原则对飞机襟翼支架结构进行轻量化设计。选用AL2014-AREO材料,利用Inspire软件分别对不同优化目标下的不同形状控制方式进行拓扑优化计算,得到支架模型的最佳形状控制方案,将最优控制方案进行梯度拓扑优化,然后对梯度拓扑的最优结果进行几何重构和强度校核,得到最终优化模型。相对于初始模型实现了62.8%减重,且支架模型的应力、位移、安全系数都符合设计要求。该研究结果为飞机襟翼支架结构的轻量化设计提供了一种新的设计思路。