Verifying the correctness of wide-area Internet routing
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doi:10.3969/j.issn.1009-881X.2020.03.027胶乳增强免疫比浊法检测血清25-羟维生素D的性能验证刘琴1,王玲萍1,陆仁伟1,陆茜莹1,许中2(1.苏州市相城区漕湖人民医院检验科,江苏苏州 215144;2.苏州市立医院东区检验科,江苏苏州 215001)摘要:目的 验证一种新上市的总25-羟维生素D[25(OH)D]检测试剂的方法学性能。
方法性能验证使用苏州博源公司生产的总25-羟维生素D检测试剂,验证该试剂的正确度、精密度、线性、最大稀释倍数、分析灵敏度,方法学验证采用罗氏诊断的试剂作为参比试剂,对临床样品进行评价。
结果总25-羟维生素D不同浓度水平血清样品:低值(19.36 ng/mL)、中值(54.51 ng/mL)、高值(97.80 ng/mL)的加标回收率分别为106.2%、102.3%、99.8%;低值、高值血清样品的批内精密度和总精密度分别为2.87%、1.42%和3.60%、2.09%,小于厂商声明的1/4TEa(6.25%)和1/3TEa(8.33%);线性范围为8.0~152.0 ng/mL;分析灵敏度符合厂商声明标准(2.9 ng/mL)。
方法学比对收集健康体检者及患者血清样品(n=110),分别使用苏州博源(试验方法,Y)与罗氏诊断(参比方法,X)的总25-羟维生素D试剂进行检测,Deming回归方程为Y =-2.5853+1.0410X,相关系数r=0.951,Bland-Altman图中95.5%(105/110)的点落在95%一致性界限内。
结论苏州博源总25-羟维生素D的正确度、精密度、线性范围、最大稀释倍数、分析灵敏度和参考区间满足性能验证要求,样品比对结果与罗氏诊断试剂具有一致性,可满足临床应用要求。
关键词:总25-羟维生素D;血清;胶乳增强免疫比浊法中图分类号:R541.6 文献标识码:A 文章编号:1009-881X(2020)03-0369-04 Determination of Serum 25-Hydroxyvitamin D by Latex-enhanced ImmuneTurbidimetryLIU Qin1, WANG Ling-ping1, LU Ren-wei1, LU Xi-ying1, XU Zhong2(1.Clinical Laboratory, Caohu People's Hospital, Suzhou, Jiangsu, 215144, China; 2.Clinical Laboratory, EastDistrict of Suzhou Municipal Hospital, Suzhou, Jiangsu, 215001, China) Abstract:Objective To verify the methodological performance of a newly marketed total 25-hydroxyvitamin D [25(OH)D)]detection reagent. Methods A total 25-hydroxyvitamin D test reagent produced by Suzhou Boyuan Company, verifying the correctness, precision, linearity, maximum dilution multiple, analytical sensitivity of the reagent, methodological validation using Roche diagnostic reagent as reference reagent, clinical samples were evaluated. Results Standard-added recovery of serum samples with different concentrations of 25-hydroxyvitamin D: low value (19.36 ng/mL), median value (54.51 ng/mL), high value (97.80 ng/mL) were 106.2%, 102.3%, 99.8%, respectively; the in-batch precision and total precision of low and high value serum samples were 2.87%, 1.42% and 3.60%, 2.09%, less than 1/4 Tea (6.25%) and 1/3 Tea (8.33%); the linear range was 8.0-152.0 ng/mL; analytical sensitivity meets manufacturer's declaration standard (2.9 ng/mL). Methodological comparison of serum samples collected from health checkers and patients (n=110), using Suzhou Boyuan (test method, Y) and Roche Diagnostics (reference method, X) total 25-hydroxyvitamin D reagent, Deming regression equation is Y=-2.5853+1.0410X, correlation coefficient r=0.951, bland-altman 95.5%收稿日期:2020-07-26 作者简介:刘琴(1975—),女,江苏苏州人,学士,副主任技师,主要从事临床生化检验及实验室管理。
2022年职业考证-软考-信息安全工程师考试全真模拟全知识点汇编押题第五期(含答案)一.综合题(共15题)1.单选题数字水印技术通过在数字化的多媒体数据中嵌入隐蔽的水印标记,可以有效实现对数字多媒体数据的版权保护等功能。
以下关于数字水印的描述中,不正确的是( )。
问题1选项A.隐形数字水印可应用于数据侦测与跟踪B.在数字水印技术中,隐藏水印的数据量和鲁棒性是一对矛盾C.秘密水印也称盲化水印,其验证过程不需要原始秘密信息D.视频水印算法必须满足实时性的要求【答案】C 【解析】本题考查数字水印知识。
在数字水印技术中,水印的数据量和鲁棒性构成了一对基本矛盾;视频水印算法必须满足实时性的要求;隐形数字水印主要应用领域有原始数据的真伪鉴别、数据侦测与跟踪、数字产品版权保护。
数字水印根据输入输出的种类及其组合可分为三种:①秘密水印(非盲化水印)、②半秘密水印(半盲化水印)、③公开水印(盲化或健忘水印)。
盲化水印的检测不需要任何原始数据和辅助信息。
故本题选C 。
点播:数字水印原理:通过数字信号处理方法,在数字化的媒体文件中嵌入特定的标记。
水印分为可感知的和不易感知的两种。
其安全需求包括安全性、隐蔽性、鲁棒性,不要求可见性。
Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE 2. 单选题 根据自主可控的安全需求,近些年国密算法和标准体系受到越来越多的关注,基于国密算法的应用也得到了快速发展。
我国国密标准中的杂凑算法是( )。
问题1选项A.SM2B.SM3C.SM4D.SM9【答案】B【解析】本题考查我国密码算法方面的基础知识。
国家密码局认定的国产密码算法主要有SM1 (SCB2)、SM2、SM3、SM4、SM7、SM9、祖冲之密码算法(ZUC)等。
其中SM1、SM4、SM7、祖冲之密码(ZUC)是对称算法; SM2、SM9是非对称算法; SM3 是哈希算法。
基于PR控制器的永磁同步电机弱磁控制研究肖文英;黄守道【摘要】讲述了永磁同步电机( PMSM)的运行原理,根据其数学模型对其弱磁原理进行介绍.传统的永磁同步电机控制通常使用PI调节器的方法,通过一系列坐标变换将交流量转为直流值,并用PI调节器对其进行跟踪,为达到良好效果,常需附加随系统运行温度变换的交叉耦合项和前馈补偿项,使整个控制系统的鲁棒性降低,在额定转速以上比较高的速度运行时其负面影响尤为明显.分析了比例谐振(proportional resonant,PR)控制器特,提出了一种基于PR控制器及转子磁链定向的移相弱磁控制策略.最后用MATLAB进行仿真,结果表明该控制策略具有良好的鲁棒性和动态性能,验证了该方法的正确性.%This paper described the operating principles of permanent magnet synchronous motor, and introduced weakening principle due to its mathematical models. In the traditional control method of permanent magnet synchronous motor, it usually uses PI adjuster, through a series of coordinate transformation exchanging AC signal to dc signal, and does the tracking by PI adjuster, to achieve good results. It often needs additional cross coupling term and a feed-forward compensation changed with system operation temperature, making the robustness of the whole control system reduced. When speed is high above the rated one, its negative influence is especially remarkable. The paper analyzed the proportional resonant (PR) controller features, combined with permanent magnet synchronous motor mathematical model, and presented a control method based on a PR controller and phase-shift flux weakening control strategy. Finally, MATLAB was used tosimulate die model above. Results show the system got good dynamic and static responses, verifying the correctness and feasibility of the proposed method.【期刊名称】《湘潭大学自然科学学报》【年(卷),期】2011(033)004【总页数】5页(P108-112)【关键词】永磁同步电机;PR控制器;转子磁链定向矢量控制【作者】肖文英;黄守道【作者单位】湖南工学院电气与信息工程系,湖南衡阳421002;湖南大学电气与信息工程学院,湖南长沙410082【正文语种】中文【中图分类】TM571近年来,因变频调速的永磁同步电动机(简称PMSM)具有可靠性高、功率因数和效率高等诸多优点获得了广泛研究和应用[1,2],但其转子励磁固定,运行时要求端电压和速度成正比,因而无法运行到较高的转速和在高速下做恒功率运行.针对此问题采用弱磁控制以获得宽广的调速范围,实现高速恒功率运行.永磁同步电动机弱磁控制有多种方案,其中一种为移相弱磁控制方案[3],其思路类似于开关磁阻电机高速运行模式下的超前移相控制,不需要增加过多的驱动器硬件成本,有着广泛的应用前景.PI控制具有算法简单和可靠性高的特点.因此传统PMSM控制系统常采用PI控制器[4,5].因其只能对直流量有良好的跟踪效果,故坐标变换会增多,会使控制算法难于实现,而PI调节器只能对直流量进行跟踪控制,对交流量无法跟踪[6,7].而且,为达到良好效果,常附加了随系统运行温度变换的交叉耦合项和前馈补偿项,使整个控制系统的鲁棒性降低,特别是在额定转速以上的弱磁运行时,因参数的变化,其影响更大.针对此问题,需寻找到其他方法以克服其缺点.研究发现PR 控制器可以直接对交流量实现无差跟踪,省去了过多的坐标变化,使控制算法更为简单,不用考虑交叉耦合项以及前馈补偿项,优化了系统鲁棒性能[8].因此,本文设计了一种基于PR的控制器的控制方法,并将之应用于永磁同步电机系统控制系统中,采用移相弱磁控制策略,减小了控制算法实现难度,提高了控制系统的鲁棒性和稳定性,同时能实现高转速弱磁的稳定控制.1 永磁同步电动机的矢量控制基于永磁同步电机控制原理,不计电动机的铁心饱和、涡流和磁滞损耗、略磁场中所有的空间谐波、参数变化等因素,旋转坐标系d,q轴下PMSM定子磁链方程为:其中:Ld、Lq为PMSM的d,q轴电感;Id、Iq为定子电流矢量的d,q轴电流;ψr 为转子磁链在定子上的耦合磁链.PMSM在d,q轴上的定子电压方程式:其中:Vd是定子电压矢量V的d轴分量;Vq是定子电压矢量V的q轴分量;p是微分算子;ωr是转子旋转角速度.当d轴与转子主磁通方向一致时,且认为旋转坐标系的旋转角频率与转子旋转角频率一致,可得到PMSM转子磁通定向的电压回路方程式为:电磁转矩方程为:其中:P为电机的极对数.基速以下采用转子磁链定向的PMSM定子电流矢量位于q 轴,无d轴分量,即Iq=I,Id=0,则PMSM的电压方程可写为:电磁转矩方程可简化为:由(6)可知,基速以下,控制Iq就能控制转速实现矢量控制.2 永磁同步电动机的弱磁控制原理永磁同步电机的电压方程可写为:从式(7)可以看到,永磁同步电机的转速和电机端电压成正比,因此当电机达到额定转速后,若要维持电机端电压不变而进一步提高转速,只有靠调节id、iq来实现,即弱磁控制,其一般是通过增加直轴去磁电流分量.永磁同步电机的弱磁扩速控制可由如图1所示的定子电流矢量轨迹加以说明.首先,电机恒转矩运行,即沿着最大转矩比电流曲线OA运行.当电机的电压和电流均达到极限值时,此时转速ω1为对应最大转矩TA时电机的转折速度.若要进一步提高转速,比如将其升至ω2,同时最大限度的利用逆变器容量,则需要控制电流矢量沿着电流极限圆,即AB段逆时针向下运行.从图上可以看出,电流矢量从A点运行到B点,直轴去磁电流分量增大了,同时,电机的输出转矩变小了,即恒功率运行.传统的弱磁方式之一为移相角弱磁控制,如图2所示,当电流矢量为is1时,若此时电机对应最大转矩时的转折速度ω1,为了实现弱磁,即增加直轴去磁电流分量,可将is1对应的角度θ1增大到θ2.由图2可知,此时直轴电流去磁分量增大了.为了实现移相弱磁控制,我们需要求出弱磁调节系数,该系数由下式给定:3 基于PR的PMSM弱磁控制策略PR(proportional resonant)控制器,它的传递函数可如下表示其中,Ki是积分时间常数;Kp为比例常数;w0是谐振频率,而且有作其波特图如图3所示.由图3可以看到,在频率点w0处为高增益,因此可以应用于无静差的电流跟踪控制系统中.其原理框图如图4所示.图5 移相弱磁控制系统框图Fig.5 Phase shifting flux weakening control system在上述基础上,在控制系统中引入PR控制器,将能优化系统的响应.基于PR控制器的移相弱磁控制系统框图如图5所示.图5中,实测的调节系数M与设定值M*做差比较后,其差值通过弱磁环的调节输出角度的给定值.当差值大于0时,弱磁环输出的角度值不发生变换;而当差值小于0时,弱磁环输出的角度值增大,即进入弱磁控制,完成了系统从电流id=0控制过渡到弱磁控制,从恒转矩控制过度到恒功率控制.易知,该控制下,省略了受温度影响的电路参数交叉解耦项ωLiq、ωLid和前馈补偿项ωΨr,从而实现了鲁棒性能高的目的.4 仿真结果及其分析利用MATLAB仿真工具箱,对引入PR控制器的PMSM采用移相弱磁方法,研究其系统控制.永磁电机的参数如表1所示.给定转速设置为:初始值n*=2 000r/min,t=0.15 s时突变,为n*=4 000 r/min.且在t=0.72 s时,突加TL=5 N·m.表1 PMSM参数Tab.1 The PMSM parameter定子额定电压/V定子电阻/Ω转子磁链/Wb定子电感Ld/mH电机极对数定子电感Lq /mH 1000.031 860.055 61.2961.29从图6可以看到,转速给定由2 000 r/min突变为4 000 r/min的过程中,实际转速能平滑地过渡,并进入弱磁扩速状态,系统很好地实现了2倍扩速,且在t=0.72 s负载突变时几乎无脉动,这说明了采用PR控制器能获得良好的动静态转速响应.从图7可以看到,t=0.15 s移相弱磁角由开始为0慢慢向负方向增加,这说明了电机此时在移相弱磁控制下开始进入弱磁运行方式.图8描述了在电机启动时、给定的转速突变情况下以及负载突变的条件下电机的电磁转矩的响应情况.可以看到电磁转矩波动非常小,表明了应用上述控制策略情况下控制系统具有良好的动态性能.图9和图10分别为电机定子三相电流及其细节图的波形,在弱磁扩速达到给定值时突加负载瞬间三相电流有些脉动,但很快达到稳定状态,从图10可见其正弦性能良好.图11和图12分别是定子给定电流和实际电流在静止坐标系下的α分量及其细节图.可以看到,其波形几乎重合,可以说明,在PR控制器对正弦电流的跟踪效果非常好,几乎没有什么偏差,可见其实际应用优势.5 结论PR控制器能够对交流量进行无差跟踪,本文据此进行数学建模,并结合永磁同步转子磁链定向原理,采用移相弱磁方法,建立了PMSM弱磁控制系统仿真模型,并分析了仿真结果.系统的静态性能和动态性能均表现良好,验证了该方法的可行性.参考文献[1]曹荣昌.永磁同步电机牵入同步分析[J].湘潭大学自然科学学报,1999(03):97—99.[2]王旭红,汪建平.永磁同步电动机的研制及优化[J].湘潭大学自然科学学报,2002,24(3):96—99.[3]童怀,刘继辉.永磁同步电动机移相弱磁控制的仿真分析[J].微特电机,2006(8):17—20[4]戴朝波,林海雪.电压源型逆变器三角载波电流控制新方法[J].中国电机工程学报,2002,22(2):99—102.[5]姜俊峰,刘会金,陈允平,等.有源滤波器的电压空间矢量双滞环电流控制新方法[J].中国电机工程学报,2004,24(10):82—86.[6]唐欣,罗安,涂春鸣.基于递推积分PI的混合型有源电力滤波器电流控制[J].中国电机工程学报,2003,23(10):38—41.[7]孙强,程明,周鹗,等.新型双凸极永磁电机调速系统的变参数PI控制[J].中国电机工程学报,2003,23(6):117—122.[8] TEODORESCU R,BLAABJERG F,BORUP U,et al.A new control structure for grid-connected LCL PV inverters with zero steady-state error and selective harmonic compensation[J].IEEE Trans on Power Electronics,2004:580—586.。
VALIDATION OF COMPENDIAL PROCEDURES药典方法的验证Test procedures for assessment of the quality levels of pharmaceutical articles are subject to various requirements. According to Section 501 of the Federal Food, Drug, and Cosmetic Act, assays and specifications in monographs of the United States Pharmacopeia and the National Formulary constitute legal standards. The Current Good Manufacturing Practice regulations [21 CFR 211.194(a)] require that test methods, which are used for assessing compliance of pharmaceutical articles with established specifications, must meet proper standards of accuracy and reliability. Also, according to these regulations [21 CFR 211.194(a)(2)], users of analytical methods described in USP NF are not required to validate the accuracy and reliability of these methods, but merely verify their suitability under actual conditions of use. Recognizing the legal status of USP and NF standards, it is essential, therefore, that proposals for adoption of new or revised compendial analytical procedures be supported by sufficient laboratory data to document their validity.用于评估药品质量的检验方法需要满足不同的要求。
摘要摘要视觉错觉能够反映出视觉加工机制的基本原则,是我们了解人类视觉系统工作原理的一个有用工具。
Ponzo错觉是一种重要的几何视觉错觉,其错觉图形表现为在两条竖直方向的会聚线中间有两条等长且平行的的水平线段,观察者会认为该错觉图形中上面的一条水平线段比下边的线段要长一些。
自Ponzo错觉被意大利心理学家Mario Ponzo提出以来,就备受国内外相关研究者的关注,解释Ponzo错觉的理论也随之相继提出。
目前对Ponzo错觉的解释理论中常见的有恒常性误用理论,双因素理论,同化理论,倾斜恒常性理论等。
现有的对Ponzo错觉的解释理论主要从心理学、生理学等角度对其进行定性分析。
这些理论能够有效的说明一些问题,但是缺乏对Ponzo错觉产生机制的定量、可计算的解释理论。
本文通过对Ponzo错觉的现有理论以及射影几何理论的广泛调研,基于射影几何理论提出了可用于定量分析并解释Ponzo错觉形成过程的数学模型。
该模型是基于人眼观察现实场景时的射影几何过程提出的,相比于现有的定性分析理论,该模型可以为分析Ponzo错觉的产生过程提供定量的分析方案。
为验证所提出的数学模型,本文在深入了解病态逆问题的概念与求解方法的基础上,从逆问题求解角度探讨了Ponzo错觉产生过程中可能对认知结果造成影响的因素,之后选定其中的关键因素设计了主观视觉测试实验。
同时,设计了基于数学模型准确产生Ponzo错觉图形的方法。
我们搭建了网络测试平台使受试者参与主观实验,通过该平台我们获得了大量的数据,这些数据可用于验证所提出的数学模型。
我们通过人工神经网络回归的方法对收集到的数据进行分析,对神经网络回归的结果与通过几何模型计算的结果的分布情况进行比对,以二者的分布情况的相关性程度作为评估指标,对所提出的Ponzo错觉形成机制理论的正确性进行评估。
本文提出了用于解释Ponzo错觉的产生过程的数学模型。
该模型对进一步研究人类的视觉错觉有重要的作用,对于错觉研究的发展具有重要的参考意义与潜在的应用价值。
媒体应该有审查制度英语作文In the modern era, where information is disseminated at an unprecedented pace, the role of media is more critical than ever. The question of whether the media should have a censorship system has sparked vigorous debate. On one hand, proponents of censorship argue that it can prevent the spread of misinformation, protect vulnerable audiences, and maintain social order. On the other hand, critics contend that censorship infringes upon freedom of speech and can lead to government control over public opinion.One of the primary reasons for implementing a censorship system is to ensure that the public is not misled by false information. In a world where anyone can publish content online, the potential for misinformation to spread is significant. Media censorship can act as a filter, verifying the accuracy of information before it reaches the public. This can help to prevent panic, confusion, and the erosion of trust in institutions.Another argument in favor of media censorship is the protection of sensitive content from children and other vulnerable groups. Not all content is suitable for all audiences, and censorship can serve as a safeguard to ensure that age-inappropriate or otherwise sensitive material is not accessible to those who should not be exposed to it.Furthermore, censorship can help to maintain socialharmony by preventing the spread of content that could incite violence or social unrest. In societies with a history of conflict, the media can play a crucial role in either exacerbating tensions or promoting peace and reconciliation.A censorship system can help to ensure that the media contributes positively to social stability.However, opponents of media censorship argue that it can be a tool for government control and suppression of dissent. When the government has the power to decide what can and cannot be published, it can manipulate the narrative to suitits own interests, thereby undermining the public's right to know the truth. This can lead to a lack of accountability and a culture of secrecy.Moreover, censorship can stifle creativity and diversityof thought. When journalists and creators are forced to self-censor in order to avoid penalties, the range of ideas and perspectives available to the public becomes limited. Thiscan lead to a homogeneous media landscape that does notreflect the rich tapestry of society.In conclusion, while media censorship has its merits in terms of accuracy, protection, and social stability, it also poses significant risks to freedom of expression anddiversity of thought. Striking a balance between these competing interests is a complex challenge that requires careful consideration of the values that a society holds dear. It is essential to have a robust and transparent system of checks and balances to ensure that the media serves thepublic interest without compromising on the fundamental principles of a free and open society.。
现代电子技术Modern Electronics TechniqueMay 2023Vol.46No.102023年5月15日第46卷第10期多目标跟踪是计算机视觉中的一个重要领域,多应用在视频监控和自动驾驶中。
而遮挡问题是多目标跟踪面临的一个关键挑战,针对这一问题,人们对多目标跟踪算法提出了许多优化方案。
有仅依靠检测器跟踪目标的算法[1]、IoU 跟踪器[2]以及基于核相关滤波器(KCF )的跟踪器[3]等。
随着深度学习逐渐成熟,目前主要出现了两种目标跟踪优化方向,分别是检测跟踪范式(Tracking⁃by⁃Detection )的跟踪器[4]和检测与跟踪联合学习的跟踪器[5]。
第一种分离式算法通常利用目标的外观特征、运动特征和前后帧信息来提高目标跟踪的鲁棒性和稳定性,从而解决遮挡问题;第二种联合式算法通过神经网络和深度学习将目标的表观特征和运动特征联DOI :10.16652/j.issn.1004⁃373x.2023.10.032引用格式:李伟,颜旒.应对遮挡问题对DeepSORT 进行轨迹拟合优化[J].现代电子技术,2023,46(10):173⁃180.应对遮挡问题对DeepSORT 进行轨迹拟合优化李伟,颜旒(重庆交通大学机电与车辆工程学院,重庆400074)摘要:检测跟踪范式是多目标跟踪的主要研究方向,也是自动驾驶汽车的主要应用框架。
完善的检测跟踪范式可以在提高多目标跟踪精度的同时有效降低跟踪框的失真率。
然而在现有的先进方法中,这种范式通常会遇到多目标重叠后的ID 交换问题,严重影响跟踪精度和轨迹判断。
为解决该问题,文中基于经典的DeepSORT 算法提出改进方案。
首先,在卡尔曼滤波器中添加跟踪框进行置信度的预测和更新,并按降序对更新后的置信度进行排列,在后续匹配中优先匹配预测置信度更高的跟踪目标;然后,比较预测置信度和检测置信度之间的差异,识别出置信度突变的目标,以进行跟踪轨迹的优化和剪枝;最后,使用余弦相似度和交并比(IoU )识别重叠目标,并对重叠目标中置信度最高的目标消失后的轨迹进行多项式轨迹拟合,以纠正错误的ID ,完成精确匹配。
商用车驾驶室悬置仿真与隔振性能优化王国林;李凯强;杨建;梁晨【摘要】针对某款商用车驾驶室悬置的开发,采用ADAMS/View软件建立其标杆车的全浮式空气弹簧悬置模型.研制了动力学等效驾驶室并进行了台架振动测试,验证了模型的正确性.在此基础上,建立了该商用车开发车型的悬置动力学模型,对其进行模态分析.以隔振性能为优化目标,采用广义简约梯度法对开发车型空气弹簧的参数进行了优化.结果表明:优化后的主驾驶座椅垂向加速度功率谱密度下降了27.6%,改善了驾驶室的隔振性能.%In view of the cab development requirements of a commercial vehicle,a model for the full float-ing air spring cab mount of its benchmark vehicle is built with ADAMS/View software.A dynamically equivalent cab is produced and tested on vibration rig, verifying the correctness of simulation model. On this basis, a dynamics model for the cab mount of the commercial vehicle on development is set up,on which a modal analysis is conduc-ted. Then a parameter optimization is performed on the air spring mount of the vehicle on development by using gen-eralized reduced gradient method with vibration isolation performance as objective.The results show that after optimi-zation the vertical acceleration PSD of main driving seat reduces by 27.6%, improving the vibration isolation per-formance of cab.【期刊名称】《汽车工程》【年(卷),期】2017(039)009【总页数】6页(P1081-1086)【关键词】驾驶室悬置;隔振性能;ADAMS;参数优化【作者】王国林;李凯强;杨建;梁晨【作者单位】江苏大学汽车与交通工程学院,镇江 212013;江苏大学汽车与交通工程学院,镇江 212013;江苏大学汽车与交通工程学院,镇江 212013;江苏大学汽车与交通工程学院,镇江 212013【正文语种】中文Keywords:cab mount; vibration isolation performance; ADAMS;parameter optimization运输业在国民经济中起着重要作用,而商用车作为运输业的主体,其平顺性问题备受关注。
2022年职业考证-软考-信息安全工程师考试全真模拟易错、难点剖析AB卷(带答案)一.综合题(共15题)1.单选题()能有效防止重放攻击。
问题1选项A.签名机制B.时间戳机制C.加密机制D.压缩机制【答案】B【解析】本题考查重放攻击相关知识。
签名机制:作为保障信息安全的手段之一,主要用于解决伪造、抵赖、冒充和篡改问题。
加密机制:保密通信、计算机密钥、防复制软盘等都属于加密技术,加密主要是防止重要信息被一些怀有不良用心的人窃听或者破坏。
压缩机制:压缩机制一般理解为压缩技术。
变形器检测病毒体反汇编后的全部指令,可对进行压缩的一段指令进行同义压缩。
一般用于使病毒体代码长度发生改变。
提高恶意代码的伪装能力和防破译能力。
时间戳:主要目的在于通过一定的技术手段,对数据产生的时间进行认证,从而验证这段数据在产生后是否经过篡改。
故时间戳机制可以有效防止重放攻击。
故本题选B。
点播:重放攻击是指攻击者发送一个目的主机已接收过的包,来达到欺骗系统的目的,主要用于身份认证过程,破坏认证的正确性。
重放攻击可以由发起者或拦截并重发该数据的地方进行。
攻击者利用网络监听或其他方式盗取认证凭据,之后再将它重新发送给认证服务器。
2.单选题防火墙的安全规则由匹配条件和处理方式两部分组成。
当网络流量与当前的规则匹配时,就必须采用规则中的处理方式进行处理。
其中,拒绝数据包或信息通过,并且通知信息源该信息被禁止的处理方式是()。
问题1选项A.AcceptB.RejectC.RefuseD.Drop【答案】B【解析】本题考查防火墙相关知识。
防火墙的规则处理方式如下:Accept:允许数据包或信息通过;Reject:拒绝数据包或信息通过,并且通知信息源该信息被禁止;Drop:直接将数据包或信息丢弃,并且不通知信息源。
故本题选B。
点播:防火墙是一种控制隔离技术,在某机构的网络和不安全的网络之间设置屏障,阻止对信息资源的非法访问,也可以使用防火墙阻止重要信息从企业的网络上被非法输出。
备案审查工作报告英语English.Filing Review Work Report.I. Introduction.In accordance with the requirements of the relevant laws and regulations, the company has established a sound filing review system and implemented a comprehensive filing review process to ensure the accuracy, completeness, and authenticity of the information provided in the filing documents.II. Filing Review Process.The filing review process consists of the following steps:1. Document Collection and Verification.The company collects and verifies all required filing documents, including financial statements, tax returns, and legal documents. These documents are checked for completeness and accuracy against the relevant laws and regulations.2. Risk Assessment.The company conducts a risk assessment to identify potential areas of concern in the filing documents. This assessment considers factors such as the industry in which the company operates, the size and complexity of the company, and the company's financial performance.3. Substantive Review.The company performs a substantive review of the filing documents to ensure that they are accurate and complete. This review includes verifying the correctness of the information provided, as well as the consistency of the information with other sources.4. Disclosure Review.The company ensures that all material information is disclosed in the filing documents. This includesidentifying and disclosing any potential conflicts of interest, related-party transactions, or other matters that could impact the company's financial performance or operations.III. Findings and Recommendations.The filing review process identified several areas that require further attention. These areas include:1. Accounting Treatment.The company has identified certain areas where the accounting treatment used in the financial statements may not be in accordance with the applicable accounting standards. The company will need to correct these areas to ensure that the financial statements are accurate andreliable.2. Risk Disclosure.The company has identified certain areas where the filing documents do not adequately disclose the company's risks. The company will need to add additional disclosure to these areas to ensure that investors are adequately informed of the company's risks.IV. Conclusion.The filing review process has been completed and the company has identified several areas that require further attention. The company is committed to addressing these areas and ensuring that the filing documents are accurate, complete, and reliable.中文回答:备案审查工作报告。
华为教育中心对英语作文的深度检查In the ever-evolving landscape of technology and education, Huawei Education Center has emerged as a pivotal player in enhancing learning experiences. One of theCenter's most notable features is its ability to provide a comprehensive review and analysis of English essays, utilizing cutting-edge artificial intelligence algorithms. This innovative approach not only enhances the quality of student writing but also equips learners with the skills necessary to excel in today's globalized world.The essay checking process at Huawei Education Center begins with a thorough analysis of the content, structure, and language use. The AI-driven system is designed to identify areas where improvement is needed, such as grammar errors, inappropriate word choice, or inconsistent sentence structure. It then provides tailored feedback, guiding students towards making necessary revisions.Beyond basic linguistic corrections, the system also evaluates the essay's coherence, logic, and argumentative strength. This allows students to identify gaps in their reasoning or organization and refine their essaysaccordingly. The result is not just error-free writing but also well-structured, thought-provoking compositions.Moreover, the essay checking service at Huawei Education Center is designed to foster a culture of continuous learning. As students receive feedback on their essays, they are encouraged to reflect on their writing process and identify areas where they can improve. This iterative approach not only enhances their writing skills but also cultivates a growth mindset that is crucial for success in any field.In addition to its essay checking capabilities, Huawei Education Center also provides access to a rich library of resources and learning materials. These resources cover a wide range of topics and are designed to support students in all stages of their learning journey. By combining essay checking with access to these resources, the Center creates a comprehensive learning environment that enables students to achieve their full potential.The impact of Huawei Education Center's essay checking service is felt not just within the classroom but also beyond. As students become more confident and skilled intheir writing, they are better prepared to communicate their ideas effectively in academic and professional settings. This, in turn, opens up new opportunities for them to succeed in the globalized world.In conclusion, the essay checking service at Huawei Education Center represents a significant advancement in the field of education technology. By leveraging the power of artificial intelligence, the Center is able to provide students with a personalized and comprehensive learning experience that sharpens their writing skills and equips them with the tools necessary to excel in today's interconnected world.**华为教育中心深度检查英语作文**在科技与教育的不断演变中,华为教育中心成为了提升学习体验的关键角色。
Dear Professor Last Name,I hope this email finds you in good health and high spirits.As a student deeply committed to academic excellence,I am reaching out to you with a request for your invaluable assistance.I have recently completed a significant piece of academic writing,which I believe could benefit greatly from your expertise and insightful feedback.Your reputation for meticulous attention to detail and your profound understanding of the subject matter have inspired me to seek your guidance.The article I am working on is titled Title of the Article and it delves into brief description of the articles subject and purpose.I have endeavored to present a comprehensive analysis,supported by rigorous research and a clear,logical argumentation.However,I am aware that there is always room for improvement,and I am eager to refine my work to the highest standard possible.I would be immensely grateful if you could spare some time to review my manuscript. Specifically,I am seeking your input on the following aspects:1.Structural Coherence:Ensuring that the flow of ideas is seamless and that each section logically transitions to the next.2.Content Accuracy:Verifying the factual correctness of the information presented and the validity of the arguments made.3.Clarity and Conciseness:Assessing whether the language is clear,concise,and free of ambiguity.4.Style and Tone:Advising on the appropriateness of the writing style and tone for the intended audience.5.Citations and References:Checking the accuracy and consistency of the citations and ensuring that all sources are properly acknowledged.I understand that your schedule is likely very busy,and I do not wish to impose.However, if you are willing to help,I would be happy to provide you with a digital copy of the manuscript or arrange a meeting at your earliest convenience to discuss the document in person.Please let me know if you are available to assist with this task,and if so,I would appreciate any guidance you could provide on the best way to proceed.Your feedback would be instrumental in elevating the quality of my work and in helping me to develop as a scholar.Thank you very much for considering my request.I look forward to the possibility of working with you and am excited about the opportunity to learn from your expertise.Warm regards,Your Full NameYour University or InstitutionYour Contact Information。
Proof is an essential aspect of science, mathematics and other branches of knowledge. It is a systematic and rigorous method of verifying the validity of a claim, hypothesis or theory. Proof is used to convince others of the correctness of a statement, to establish new knowledge and to solve problems. In this essay, I will explore the concept of proof and its different forms, including deductive and inductive reasoning, and highlight the importance of proof in various fields.Deductive reasoning is a type of proof that relies on logical arguments and premises to establish the truth of a conclusion. It is used in mathematics, philosophy, and law, among other fields. The validity of a deductive argument depends on the truth of the premises, and any deductive argument can be represented in the form of a syllogism, with two premises leading to a conclusion. For example, the following is a syllogism:All men are mortal.Socrates is a man.Therefore, Socrates is mortal.In this example, the two premises lead logically to the conclusion, which is true. Deductive reasoning is often usedin mathematical proofs, where the premises are axioms or definitions and the conclusions are theorems or lemmas.Inductive reasoning is another form of proof, which is based on observation and experimentation. It is used in the natural sciences, social sciences, and engineering, among other fields. Inductive reasoning starts with specific examples or observations and draws a general conclusion, based on the probability of the observed patterns. For example, after observing many instances of water boiling at 100 degrees Celsius at sea level, we conclude that waterboils at 100 degrees Celsius at sea level, but we cannot say for certain that it will always do so. Inductive reasoning is also used in statistical analysis, where a sample is used to draw a general conclusion about a population.Proof is important in various fields, especially in science and mathematics, where it establishes the validity of theories and models. In science, proof is used to confirm or reject hypotheses, based on empirical evidence and experimentation. A scientific theory is not accepted as true until it has been extensively tested and validated by experiments, and even then it is subject to revision or falsification. In mathematics, proof is used to establish thetruth of a theorem, based on logical arguments and axioms. Mathematical proofs are usually rigorous and require a high level of mathematical sophistication.Proof is also important in law, where it is used to establish guilt or innocence, based on evidence and legal arguments. In court, proof is required to meet the standard of beyond a reasonable doubt, which means that there is no other plausible explanation for the evidence presented. Proof in law can be based on direct evidence, such as eyewitness testimony or physical evidence, or indirect evidence, such as circumstantial evidence or expert testimony.In conclusion, proof is an essential aspect of science, mathematics, and law, among other fields. It is based on deductive and inductive reasoning, and it is used toestablish the validity of claims, hypotheses, and theories. Proof is important because it establishes the credibility and reliability of knowledge, and it enables us to solve problems and make informed decisions.。
权威的证据英语作文Title: The Significance of Authoritative Evidence。
In the realm of academia, professional discourse, and policymaking, the reliance on authoritative evidence stands as a cornerstone for informed decision-making and the advancement of knowledge. Authoritative evidence, characterized by its credibility, reliability, and validity, holds immense importance in various domains, including scientific research, legal proceedings, and public policy formulation. This essay explores the significance of authoritative evidence and its pivotal role in shaping our understanding of the world.First and foremost, authoritative evidence serves asthe bedrock of scientific inquiry. In the scientific community, empirical research grounded in robust methodologies and supported by authoritative evidence forms the basis for theory development and empirical validation. Scientific progress hinges upon the meticulous collection,analysis, and interpretation of data derived from reliable sources. Peer-reviewed journals, reputable research institutions, and established scientific organizations are instrumental in vetting and disseminating authoritative evidence to the broader scientific community, thereby fostering a culture of transparency and accountability.Moreover, authoritative evidence plays a critical rolein ensuring the fairness and integrity of legal proceedings. In the realm of law, the admissibility of evidence is contingent upon its relevance, reliability, and authenticity. Judges and jurors rely on authoritative evidence presented by expert witnesses, forensic specialists, and credible testimonies to adjudicate legal disputes and dispense justice fairly. The exclusion of hearsay and the adherence to evidentiary standardssafeguard the rights of litigants and uphold the principles of due process within the judicial system.Furthermore, authoritative evidence serves as alinchpin for evidence-based policymaking and governance. Policymakers, lawmakers, and public officials rely onempirical research, statistical analyses, and policy evaluations to craft effective policies, allocate resources efficiently, and address societal challenges. Evidence-based interventions informed by authoritative evidence have been instrumental in improving public health outcomes, mitigating socioeconomic disparities, and promoting environmental sustainability. By grounding policy decisions in empirical evidence rather than ideological beliefs or political expediency, policymakers can foster public trust and enhance the efficacy of governance mechanisms.Additionally, authoritative evidence plays a pivotal role in fostering public trust and combating misinformation in an era characterized by information overload and digital disinformation. With the proliferation of social media platforms and online forums, misinformation and fake news have become pervasive, undermining public discourse and eroding trust in institutions. Fact-checking organizations, independent journalists, and academic researchers play a crucial role in debunking falsehoods and verifying the veracity of claims through rigorous fact-checking and evidence-based analysis. By promoting media literacy andcritical thinking skills, individuals can discern credible sources from dubious ones and make informed decisions based on authoritative evidence.In conclusion, authoritative evidence serves as a cornerstone for informed decision-making, empirical inquiry, and societal progress across various domains. Whether inthe realms of science, law, policymaking, or public discourse, the reliance on credible, reliable, and valid evidence is indispensable for advancing knowledge,upholding justice, and fostering public trust. As we navigate an increasingly complex and interconnected world, the pursuit and dissemination of authoritative evidence remain paramount in shaping our understanding of realityand informing our collective actions for the betterment of society.。
英文标识不规范的现象和建议英语作文全文共3篇示例,供读者参考篇1Irregular English Signage: A Persistent Problem in Need of SolutionsAs an English learner in a non-native English-speaking country, I have encountered a pervasive issue that hinders effective communication and understanding – the prevalence of irregular English signage. Whether it's in public spaces, businesses, or even educational institutions, the incorrect usage of English on signs and displays is a widespread phenomenon that demands attention and action.The impact of irregular English signage extends beyond mere aesthetic concerns; it has profound implications for comprehension, accessibility, and the overall perception of our society's linguistic competence. When signs contain grammatical errors, misspellings, or nonsensical phrasing, they undermine the very purpose of communication, leading to confusion and misunderstanding for both local and foreign audiences.Through my observations and experiences, I have identified several common manifestations of this issue. One prevalent problem is the direct translation of phrases from the native language into English, resulting in awkward and incomprehensible constructions. For instance, a sign that reads "Slip carefully" instead of "Watch your step" or "Caution: Slippery surface" is a prime example of this issue.Another frequent occurrence is the misuse of homophones –words that sound alike but have different spellings and meanings. A classic example is the confusion between "break" and "brake," leading to signs that say "Break repair shop" instead of "Brake repair shop." Such errors not only convey the wrong message but can also be a source of unintended humor or misinterpretation.Additionally, the lack of proofreading and quality control in the production of signs often results in glaring spelling mistakes and typographical errors. These errors undermine the professionalism and credibility of the establishments or institutions responsible for the signage.The consequences of irregular English signage arefar-reaching. For tourists and international visitors, encountering such signs can create a sense of bewilderment and frustration,potentially tarnishing their overall impression of the country or city. Furthermore, for English language learners like myself, exposure to incorrect English usage can reinforce misconceptions and hinder our language acquisition process.Moreover, irregular English signage can have practical implications for safety and accessibility. Unclear or ambiguous instructions on signs could lead to misunderstandings, potentially putting individuals at risk in emergency situations or preventing them from accessing necessary services or facilities.To address this persistent issue, a multifaceted approach is necessary. Firstly, education and awareness campaigns should be implemented to emphasize the importance of accurate English signage. Local businesses, institutions, and government agencies should be encouraged to prioritize the correct usage of English on their signage, recognizing its impact on communication, perception, and potential economic consequences.Secondly, the establishment of quality control measures and proofreading processes is crucial. Involving native English speakers or language professionals in the review and approval of signage could significantly reduce the occurrence of errors and ensure clarity and accuracy.Furthermore, collaboration between educational institutions and the broader community could prove invaluable. English language programs could incorporate practical exercises and projects focused on creating effective signage, bridging the gap between language learning and real-world applications.Lastly, embracing technology and leveraging translation tools and resources can aid in the production of accurate English signage. While human oversight and proofreading remain essential, the judicious use of language translation software and online resources can serve as valuable support systems.In conclusion, the phenomenon of irregular English signage is a pervasive issue that demands attention and action. It not only hinders effective communication and understanding but also impacts perceptions, safety, and accessibility. By implementing education campaigns, quality control measures, collaborative efforts, and leveraging technology, we can work towards a future where clear and accurate English signage becomes the norm, fostering better communication and a more welcoming environment for all.篇2Improper English Signage: A Widespread Issue and Potential SolutionsAs an English student, I have noticed a concerning trend that has become increasingly prevalent in our modern society – the widespread presence of improper English signage. From small local businesses to major corporations and even governmental institutions, the misuse and incorrect grammar of English on public signs and displays is a pervasive issue that needs to be addressed.The impact of this phenomenon extends far beyond mere aesthetics or grammatical correctness. Improper English signage can lead to confusion, miscommunication, and even potential safety hazards in certain situations. Moreover, it reflects poorly on the organizations responsible for these signs, potentially damaging their credibility and professional image.In this essay, I will delve into the various aspects of this problem, exploring its causes, consequences, and ultimately proposing potential solutions to rectify this situation.Causes of Improper English SignageLack of Proofreading and Quality Control: One of the primary reasons for the prevalence of incorrect English signage isthe absence of proper proofreading and quality control measures. Many organizations rush through the process of creating signs without allocating sufficient time and resources for thorough review and editing.Limited English Proficiency: In some cases, the individuals responsible for creating and approving signs may have limited English proficiency, leading to grammatical errors, spelling mistakes, and improper word choices.Overreliance on Translation Tools: With the widespread availability of online translation tools, some organizations may rely too heavily on these resources without verifying the accuracy and nuances of the translated text.Lack of Awareness and Understanding: There appears to be a general lack of awareness and understanding regarding the importance of proper English signage, particularly in non-native English-speaking regions or communities.Consequences of Improper English SignageConfusion and Miscommunication: Incorrect or ambiguous English signage can lead to confusion and miscommunication among individuals who rely on these signs for information andguidance. This can be especially problematic in situations involving public safety, navigation, or important instructions.Negative Perception and Credibility Issues: Organizations with improper English signage may be perceived as unprofessional, careless, or lacking in attention to detail. This can damage their credibility and reputation, potentially impacting their business or public image.Missed Opportunities for Communication and Branding: Well-crafted and grammatically correct English signage can serve as an effective communication tool and contribute to strong branding efforts. By failing to prioritize proper signage, organizations miss out on these opportunities.Potential Legal and Safety Implications: In certain industries or contexts, improper signage can have legal and safety implications, exposing organizations to potential liabilities or regulatory violations.Potential SolutionsImplement Comprehensive Proofreading and Quality Control Processes: Organizations should establish robust proofreading and quality control processes for all English signage and written materials. This could involve dedicatedteams or individuals responsible for reviewing and verifying the accuracy of the content before it is made public.Invest in English Language Training and Resources: For organizations operating in regions where English proficiency may be limited, investing in English language training and resources for employees involved in creating signage and written materials can be highly beneficial.Collaborate with Language Professionals and Native Speakers: Partnering with professional linguists, translators, or native English speakers can help ensure the accuracy and appropriateness of English signage. These individuals can provide valuable insights and guidance throughout the entire process.Utilize Reliable Translation Tools and Cross-Check Results: While online translation tools can be helpful, it is crucial to cross-check and verify the results with human proofreaders or native speakers. Relying solely on automated translation can lead to errors and inaccuracies.Raise Awareness and Prioritize Proper English Signage: Organizations should prioritize proper English signage and raise awareness among their employees and stakeholders about its importance. This can be achieved through training, internalcommunication campaigns, and by setting clear guidelines and standards.Encourage Public Feedback and Reporting: Implementing a system that encourages public feedback and reporting of improper English signage can help organizations identify and address issues promptly.In conclusion, the issue of improper English signage is a multifaceted problem that requires a comprehensive approach to address. By implementing robust proofreading processes, investing in language resources, collaborating with professionals, and raising awareness, organizations can ensure that their English signage is accurate, clear, and professional.Proper English signage not only enhances communication and understanding but also reflects positively on an organization's credibility and attention to detail. As students and future professionals, it is our responsibility to advocate for high standards in language usage and contribute to creating a more literate and well-informed society.篇3The Prevalence of Irregular English Signage and the Need for StandardizationAs an international student studying in an English-speaking country, I have been struck by the ubiquity of improper and non-standard English usage on public signage and displays. While some deviations from prescribed norms can arguably be considered quirky or charming, the sheer magnitude of these infractions threatens to undermine the integrity of the English language itself. In this essay, I will outline some of the most egregious examples I have encountered, analyze the potential consequences of allowing such transgressions to persist unchecked, and propose measures that could be implemented to rectify the situation.To begin, let us consider the abundance of grammatically incorrect signs that seem to pervade every corner of the public sphere. Simple mistakes like lack of subject-verb agreement (e.g. "The student write their essays") or incorrect verb tense usage (e.g. "Shopping is fun" outside a store that has permanently closed) are so commonplace as to go largely unnoticed by the general populace. More jarring, however, are flagrant violations of even the most basic syntactic conventions, such as the ubiquitous "All __ must be ___ before entering" construction found on innumerable premises. Surely we can strive for a modicum of grammatical coherence?The misuse of vocabulary ranks among the most unforgivable transgressions, particularly when words are employed in contexts entirely divorced from their standard definitions. To cite just one example, I have lost count of the number of establishments that have posted "Unisex Restrooms" signs, apparently oblivious to the reality that very few of their patrons are indeed of a single, amalgamated sex. Perhaps they mean "Gender-Neutral Restrooms"? Simple mistakes of this variety could so easily be avoided with a humble acknowledgment that mastery of the English lexicon requires ongoing effort.While inappropriate grammar and misleading vocabulary already paint a bleak picture, the true butchering of the language is most apparent in its orthography - in other words, the flagrant misspellings that have become a prosaic feature of modern signage. Certainly,I understand that concision is often a priority, and that abbreviations and colloquialisms have their place. But must we succumb to such degeneracy as to accept "Delivry" in place of "Delivery", or "Undergrnd Parkin" as a substitute for "Underground Parking"? These are not the quaint misspellings of a stammering child, but gross deviations from accepted conventions that would presumably be echoed by the Canterbury Tales scribes of yore.At this point, one may be inclined to dismiss my concerns as little more than the pedantic ramblings of a disgruntled linguistic purist. However, I would urge you to consider the broader ramifications of accepting the unimpeded encroachment of linguistic chaos into our daily lives. For starters, the perpetuation of such degeneracy in our public spaces sends an undeniably deleterious message, particularly to young people: that slovenliness and disregard for established norms are acceptable - even celebrated - traits in society. Having been raised in an educational environment that instilled a reverence for linguistic precision, I cannot help but recoil at the idea of the next generation internalizing such a regrettable lack of principles.Moreover, the ability to communicate clearly and effectively through a shared linguistic medium is perhaps the most fundamental prerequisite for any functional society. By allowing our communal dialogue to devolve into a Babel of unstructured gibberish, we inherently hamper the very mechanisms that allow us to interact, share ideas, and advance as a civilization. Illiteracy and linguistic impoverishment have been inextricably linked to socioeconomic stagnation throughout history - is this truly the path we wish to follow into the future?Finally, we cannot ignore the reality that English has become the de facto lingua franca of the modern, globalized world. For millions of international students, workers, and expatriates seeking to forge connections and integrate into new communities, English represents a crucial bridge to understanding and success. By eroding the language's integrity through indifference and inattention, we run the risk of alienating and disenfranchising this vital contingent of society. Would we casually dismiss the importance of universally accepted technical jargon in fields like aviation or medicine? Then why hold different standards for the common tongue that binds us all together?Given the scale and severity of the issue at hand, it is clear that a coordinated effort towards linguistic rejuvenation is urgently required. While I do not presume to have a comprehensive solution, I believe adopting the following measures could facilitate meaningful progress:Public education and awareness campaigns, aimed at fostering a renewed sense of appreciation for linguistic heritage and the importance of preserving the integrity of acknowledged norms and conventions.Increased funding and institutional support for standard language education initiatives, ensuring all children have access to rigorous training in grammar, vocabulary, and orthography from an early age.The establishment of official regulatory bodies tasked with continually reviewing and updating signage guidelines, with mechanisms in place to enforce adherence to prescribed standards across both the public and private spheres.Incentives for businesses and organizations that achieve exemplary compliance, perhaps in the form of tax credits or public commendations. Positive reinforcement can be a powerful motivator.Avenues for the public to report egregious violations, ideally through a centralized system, affording concerned citizens the opportunity to be proactive guardians of the language.A long-term push towards developing new technologies, including advanced translation tools and automated proofreading software, that could mitigate orthographic errors before they are enshrined in our physical spaces.In essence, the preservation of linguistic integrity should be viewed as a collective societal responsibility, a mantle to beembraced across all segments and strata. Just as we have coalesced around ambitious initiatives to combat environmental degradation and safeguard our natural wonders, so too must we marshal our resources and resolve to protect the invaluable cultural treasures represented by our languages. For they are not mere collections of words and rules, but the very conduits through which we articulate our experiences, express our emotions, and bequeath the richness of human knowledge from one generation to the next.Should we resign ourselves to abject surrender in the face of encroaching linguistic chaos? Or should we boldly champion a renaissance of linguistic purity and precision, ensuring that the vibrancy and grace of the English language endures for centuries to come? For my part, the choice is clear. And I humbly urge all who care about the sanctity of our shared modes of expression to join me in this crucial undertaking - lest we allow our cultural beacons to be extinguished under a tide of ignorance and indifference.。
作文有关正确辨别信息英文回答:In today's digital age, the ability to correctly discern information is of utmost importance. With the proliferation of social media and online platforms, it has become increasingly challenging to distinguish between reliable and unreliable sources. In this essay, I will discuss the importance of correctly discerning information and provide strategies to do so.Firstly, it is crucial to verify the credibility of the source. With the ease of publishing information online, anyone can create and share content, regardless of its accuracy. Therefore, it is essential to evaluate the reputation and expertise of the source. Reputable news organizations and academic institutions are generally more reliable sources of information compared to personal blogs or social media posts.Secondly, fact-checking is a vital step in correctly discerning information. It is important to cross-reference the information with multiple sources to ensure its accuracy. Fact-checking websites, such as Snopes or , can be valuable resources in debunking misinformation. Additionally, it is crucial to be aware of bias in reporting and seek out multiple perspectives on a given topic.Furthermore, critical thinking skills play asignificant role in correctly discerning information. It is essential to question the motives behind the information and consider the evidence and reasoning provided. Critical thinking allows individuals to evaluate the credibility and reliability of the information presented, enabling them to make informed judgments.Moreover, being aware of common misinformation tactics can help in correctly discerning information. These tactics include clickbait headlines, sensationalism, and cherry-picking data to support a specific narrative. By recognizing these tactics, individuals can be more cautiousand skeptical when encountering such information.In conclusion, correctly discerning information is crucial in today's digital age. By verifying thecredibility of the source, fact-checking, employingcritical thinking skills, and being aware of misinformation tactics, individuals can make informed judgments and avoid being misled. It is essential to be vigilant andresponsible consumers of information in order to navigate the vast amount of content available online.中文回答:在当今数字时代,正确辨别信息的能力至关重要。
defineclass方法The `defineClass` method is primarily used to define a class programmatically and is typically called by a custom`ClassLoader` implementation. It takes three main parameters: the fully-qualified name of the class, the byte array representing the class file data, and the offset and length of the byte array.When the `defineClass` method is called, it first checks if the class with the specified name has already been loaded by the parent `ClassLoader`. If not, it proceeds to define the class using the provided class file data.To define a class, the `defineClass` method decodes the byte array representing the class file data into an instance of the `ng.Class` class. This class represents a loaded class in the JVM. It contains the necessary information about the class like its name, methods, fields, etc.While decoding the byte array, the `defineClass` method performs various operations such as verifying the correctness of the class file format, name resolution, linking, andinitializing the class. It also ensures that the class and its dependencies are valid and consistent.The `defineClass` method is often overridden in custom`ClassLoader` implementations to load classes from non-traditional sources or to provide dynamic class loading capabilities. For example, it can be used to load classes from a network location, a database, or an encrypted format. By extending the `ClassLoader` class and overriding the`defineClass` method, developers can implement their customlogic to load classes as per their requirements.。