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船舶与海洋工程论文中英文资料外文翻译文献

船舶与海洋工程论文中英文资料外文翻译文献
船舶与海洋工程论文中英文资料外文翻译文献

中英文资料外文翻译文献

A Simple Prediction Formula of Roll Damping of Conventional Cargo Ships on the Basis of lkeda's Method and Its Limitation

Since the roll damping of ships has significant effects of viscosity, it is difficult to calculate it theoretically. Therefore, experimental results or some prediction methods are used to get the roll damping in design stage of ships. Among some prediction methods, Ikeda’s one is widely used in many ship motion computer programs. Using the method, the roll damping of various ship hulls with various bilge keels can be calculated to investigate its characteristics. To calculate the roil damping of each ship, detailed data of the ship are needed to input. Therefore, a simpler prediction method is expected in primary design stage. Such a simple method must be useful to validate the results obtained by a computer code to predict it on the basis of Ikeda,s method, too. On the basis of the predicted roll damping by Ikeda’s method for various ships, a very simple prediction formula of the roll damping of ships is deduced in the present paper. Ship hull forms are systematically changed by changing length, beam, draft, mid-ship sectional coefficient and prismatic coefficient. It is found, however, that this simple formula can not be used for ships that have high position of the center of gravity. A modified method to improve accuracy for such ships is proposed.

Key words: Roll damping, simple prediction formula, wave component, eddy component, bilge keel component.

Introduction

In 1970s, strip methods for predicting ship motions in 5-degree of freedoms in waves have been established. The methods are based on potential flow theories (Ursell-Tasai method, source distribution method and so on), and can predict pitch, heave, sway and yaw motions of ships in waves in fairly good accuracy. In roll motion, however, the strip methods do not work well because of significant viscous effects on the roll damping. Therefore, some empirical formulas or experimental data

are used to predict the roll damping in the strip methods.

To improve the prediction of roll motions by these strip methods, one of the authors carried out a research project to develop a roll damping prediction method which has the same concept and the same order of accuracy as the strip methods which are based on hydrodynamic forces acting on strips. The review of the prediction method was made by Himeno [5] and Ikeda [6,7] with the computer program.

The prediction method, which is now called Ikeda’s method, divides the roll damping into the frictional (BF), the wave (Bw),the eddy (Be) and the bilge keel (Bbk) components at zero forward speed, and at forward speed, the lift (Bi) is added. Increases of wave and friction components due to advance speed are also corrected on the basis of experimental results. Then the roll damping coefficient B44 (= roll damping moment (kgfm)/roll angular velocity (rad/sec)) can be expressed as follows: B44 B bk (1)

At zero forward speed, each component except the friction and lift components are predicted for each cross section with unit length and the predicted values are summed up along the ship length. The friction component is predicted by Kato’s formula for a three-dimensional ship shape. Modification functions for predicting the forward speed effects on the roll damping components are developed for the friction, wave and eddy components. The computer program of the method was published, and the method has been widely used.

For these 30 years, the original Ikeda’s method developed for conven tional cargo ships has been improved to apply many kinds of ships, for examples, more slender and round ships, fishing boats, barges, ships with skegs and so on. The original method is also widely used. However, sometimes, different conclusions of roll mot ions were derived even though the same Ikeda’s method was used in the calculations. Then, to check the accuracy of the computer programs of the same Ikeda’s method, a more simple prediction method with the almost same accuracy as the Ikeda’s original one h as been expected to be developed. It is said that in design stages of ships, Ikeda’s method is too complicated to use. To meet these needs, a simple roll damping prediction method was deduced by using regression analysis [8].

Previous Prediction Formula

The simple prediction formula proposed in previous paper can not be used for modem ships that have high position of center of gravity or long natural roll period such as large passenger ships with relatively flat hull shape. In order to investigate its limitation, the authors compared the result of this prediction method with original Ikeda’s one while out of its calculating limitation. Fig. 1 shows the result of the comparison with their method of roll damping. The upper one is on the condition that the center of gravity is low and the lower one on the condition that the center of gravity is high.

From this figure, the roll damping estimated by this prediction formula is in good agreement with the roll damping calculated by the Ikeda’s method for low positi on of center of gravity, but the error margin grows for the high position of center of gravity. The results suggest that the previous prediction formula is necessary to be revised. Methodical Series Ships

Modified prediction formula will be developed on the basis of the predicted results by Ikeda’s method using the methodical series ships. This series ships are constructed based on the Taylor Standard Series and its hull shapes are methodically changed by changing length, beam, draft, midship sectional coefficient and longitudinal prismatic coefficient. The geometries of the series ships are given by the following equations. Proposal of New Prediction Method of Roll Damping

In this chapter, the characteristics of each component of the roll damping, the frictional, the wave, the eddy and the bilge keel components at zero advanced speed, are discussed, and a simple prediction formula of each component is developed.As well known, the wave component of the roll damping for a two-dimensional cross section can be calculated by potential flow theories in fairly good accuracy. In Ikeda's method, the wave damping of a strip section is not calculated and the calculated values by any potential flow theories are used as the wave damping.reason why viscous effects are significant in only roll damping can be explained as follows. Fig. 4 shows the wave component of the roll damping for 2-D sections calculated by a potential flow theory.

Conclusions

A simple prediction method of the roll damping of ships is developed on the basis of the Ikeda’s original prediction method which was developed in the same concept as a strip method for calculating ship motions in waves. Using the data of a ship, B/d, Cb,Cm, OG/d, G),bBK/B, Ibk/Lpp,(pa, the roll damping of a ship can be approx imately predicted. Moreover, the limit of application of Ikeda’s prediction method to modern ships that have buttock flow stern is demonstrated by the model experiment. The computer program of the method can be downloaded from the Home Page of Ikeda’s Labo (Acknowledgments

This work was supported by the Grant-in Aid for Scientific Research of the Japan Society for Promotion of Science (No. 18360415).

The authors wish to express sincere appreciation to Prof. N. Umeda of Osaka University for valuable suggestions to this study.

References

五、Y. Ikeda, Y. Himeno, N. Tanaka, On roll damping force of shipEffects of friction of hull and normal force of bilge keels, Journal of the Kansai Society of Naval Architects 161 (1976) 41-49. (in Japanese)

六、Y. Ikeda, K. Komatsu, Y. Himeno, N. Tanaka, On roll damping force of ship~Effects of hull surface pressure created by bilge keels, Journal of the Kansai Society of Naval Architects 165 (1977) 31-40. (in Japanese)

七、Y. Ikeda, Y. Himeno, N. Tanaka, On eddy making component of roll damping force on naked hull, Journal of the Society of Naval Architects 142 (1977) 59-69. (in Japanese)

八、Y. Ikeda, Y. Himeno, N. Tanaka, Components of roll damping of ship at forward speed, Journal of the Society of Naval Architects 143 (1978) 121-133. (in Japanese) 九、Y. Himeno, Prediction of Ship Roll Damping一State of the Art, Report of Department of Naval Architecture & Marine Engineering, University of Michigan, No.

239, 1981.

十、Y. Ikeda, Prediction Method of Roll Damping, Report of Department of Naval Architecture, University of Osaka Prefecture, 1982.

十一、Y. Ikeda, Roll damping, in: Proceedings of 1st

Symposium of Marine Dynamics Research Group, Japan, 1984, pp. 241-250. (in Japanese)

十二、Y. Kawahara, Characteristics of roll damping of various ship types and a

s imple prediction formula of roll damping on the basis of Ikeda’s method, in: Proceedings of the 4th Asia-Pacific Workshop on Marine Hydrodymics, Taipei, China, 2008,pp. 79-86.

十三、Y. Ikeda, T. Fujiwara, Y. Himeno, N. Tanaka, Velocity field around ship hull in roll motion, Journal of the Kansai Society of Naval Architects 171 (1978) 33-45. (in Japanese)

十四、N. Tanaka, Y. Himeno, Y. Ikeda, K. Isomura,

Experimental study on bilge keel effect for shallow draft

ship, Journal of the Kansai Society of Naval Architects 180 (1981) 69-75. (in Japanese)

常规货船的横摇阻尼在池田方法基础上的一个简单预测方法及其局限性

摘要:由于船的横摇阻尼对其粘度有显着的影响,所以很难在理论上计算。因此,某些实验结果或某些预测方法都被用于一般的设计阶段。在这些预测方法中,池田方法被广泛应用于许多船舶运动的计算机程序。使用这个方法,可以对含有各种舭龙骨的船体进行计算,从而探讨其不同的特性。为了计算每个船的横摇阻尼,详细的数据也是必须的。因此,在设计初期就需要更为简便的预测方法。方法虽然简单,但也得通过电脑程序的验证并证明在池田方法的基础上是有用的。在这个基础上推导出的简便公式就是现在的这个在本文件。船体形式的变化是通过改变船长,船宽,吃水,中横剖面系数及棱形系数来等来等到。然而这个简化公式不能用于具有较高的重心位置的船。所以,一些改进的方法以提高准确行就应运而生了。

关键词:横摇阻尼,简单的预测公式,波分量,涡分量,舭龙骨组件。

介绍

在20世纪70年代以来,船舶在波浪中的运动已发展成了具有5个自由度的运动形式,新的预测方法已经建立。该方法是基于势流理论(Ursell-Tasai 方法,源分布法等),可以预测间距,升沉,摇摆及波浪中船的偏航运动,并都有不错的精度。然而在横摇运动中,带条的方法并适合。因为粘性效应对对横摇阻尼有很大的影响。所以,就需要用一些经验公式和实验数据来检验这些公式。

为了提高这些带钢方法预测横摇运动的准确性,作者之一就就开发了一些项目来发展这个横摇预测方法,而这些都是基于水动力带条方法,都有相似的概念和顺序,精确度也能够保证。预测方法是由姬野[5]和池田[6,7]的计算机程序审查。

预测的方式,现在叫池田方法,被分为了零航速阻尼的摩擦(BF),波浪(BW),涡流(BE)和舭龙骨(BBK)组件,前进的速度,升降机(Bi)。在校正实验结果的基础上,推进速度的波和摩擦部件增加。

前进速度为零,各组成部分之外的摩擦和电梯部件的每个横截面,单位长度预测,预测值总结了沿船的长度。摩擦成分预测由加藤的公式为一个三维的船舶形状。预测横摇阻尼元件的前进速度的影响的修改功能的开发的摩擦,波浪和涡流组件。这个方法的计算机程序也已经开发出来了,并被广泛的使用。

30年间,原始池田方法开发传统船舶已被该进,以适用于多种船舶,例如:更加修长和方形的船舶,渔船,驳船,带有尾鳍的船等等。原来的方法也被广泛使用。但是,有时,横摇运动的不同的结论,即使来自相同池田的方法,在计算中使用。然后,判断是否相同池田的方法,与几乎相同的精度池田原来一直期望开发一种更简单的预测方法的计算机程序的准确性。有人说,在船舶设计阶段,池田的方法太复杂,使用。为了满足这些需求,使用回归分析,推导出一个简单的横摇阻尼预测方法。

以前的预测公式

前文中提出的简单的预测公式不能用于的调制解调器船舶有高重力或自然卷长期间,如大型客船船体形状相对平坦的中心位置。为了研究它的局限性,作者比较的结果,这种预测方法与原池田之一,而其计算限制。实验结果与他们的方法的横摇阻尼。最上层在重心低的情况下,下面那层是在低重心的情况下。

从这个数字看,这个公式估计的结果与池田公式对低重心船的估计结果很好的吻合,对高重心船会有误差。实验结果表明,以前的预测公式需要被修改。、成型的系列船

修改的的公式可以用成型的系列船型来发展成为池田公式的预测结果。该系列的船是在泰勒船型的基础上建立的,通过对他的船长,船宽,吃水,中横剖面系数及纵向棱形系数来实现。

减摇预报的新方法建议

本章中,每个组件的一些特性,如横摇阻尼,摩擦,波浪力,涡流和舭龙骨组件,都是在静水中讨论并得出的简化公式。众所周知,二维横截面的波分量可以通过势流理论精确的计算。在池田的方法中,条状横截面的兴波阻尼不能计算得到,而通过势流理论得到的计算值曾经一直被使用,因为粘性效应值在横摇阻

尼有如此的重要性。

结论

在池田原预测方法的基础上,这是相同概念作为一个条法计算船舶运动波的

方式,并用船舶横摇阻尼开发的一个简单预测方法。用到的数据,B/d, C

b ,C

m

,

OG/d, G),bBK/B, Ibk/L

pp

。此外,模型实验证明了池田的预测方法,特别是在现代船舶的用途上,但有一定的限制。

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1 外文翻译的基本内容 应选择与本课题密切相关的外文文献(学术期刊网上的),译成中文,与原文装订在一起并独立成册。在毕业答辩前,同论文一起上交。译文字数不应少于3000个汉字。 2 书写规范 2.1 外文翻译的正文格式 正文版心设置为:上边距:3.5厘米,下边距:2.5厘米,左边距:3.5厘米,右边距:2厘米,页眉:2.5厘米,页脚:2厘米。 中文部分正文选用模板中的样式所定义的“正文”,每段落首行缩进2字;或者手动设置成每段落首行缩进2字,字体:宋体,字号:小四,行距:多倍行距1.3,间距:前段、后段均为0行。 这部分工作模板中已经自动设置为缺省值。 2.2标题格式 特别注意:各级标题的具体形式可参照外文原文确定。 1.第一级标题(如:第1章绪论)选用模板中的样式所定义的“标题1”,居左;或者手动设置成字体:黑体,居左,字号:三号,1.5倍行距,段后11磅,段前为11磅。 2.第二级标题(如:1.2 摘要与关键词)选用模板中的样式所定义的“标题2”,居左;或者手动设置成字体:黑体,居左,字号:四号,1.5倍行距,段后为0,段前0.5行。 3.第三级标题(如:1.2.1 摘要)选用模板中的样式所定义的“标题3”,居左;或者手动设置成字体:黑体,居左,字号:小四,1.5倍行距,段后为0,段前0.5行。 标题和后面文字之间空一格(半角)。 3 图表及公式等的格式说明 图表、公式、参考文献等的格式详见《吉林化工学院本科学生毕业设计说明书(论文)撰写规范及标准模版》中相关的说明。

文献翻译英文原文

https://www.doczj.com/doc/b312959120.html,/finance/company/consumer.html Consumer finance company The consumer finance division of the SG group of France has become highly active within India. They plan to offer finance for vehicles and two-wheelers to consumers, aiming to provide close to Rs. 400 billion in India in the next few years of its operations. The SG group is also dealing in stock broking, asset management, investment banking, private banking, information technology and business processing. SG group has ventured into the rapidly growing consumer credit market in India, and have plans to construct a headquarters at Kolkata. The AIG Group has been approved by the RBI to set up a non-banking finance company (NBFC). AIG seeks to introduce its consumer finance and asset management businesses in India. AIG Capital India plans to emphasize credit cards, mortgage financing, consumer durable financing and personal loans. Leading Indian and international concerns like the HSBC, Deutsche Bank, Goldman Sachs, Barclays and HDFC Bank are also waiting to be approved by the Reserve Bank of India to initiate similar operations. AIG is presently involved in insurance and financial services in more than one hundred countries. The affiliates of the AIG Group also provide retirement and asset management services all over the world. Many international companies have been looking at NBFC business because of the growing consumer finance market. Unlike foreign banks, there are no strictures on branch openings for the NBFCs. GE Consumer Finance is a section of General Electric. It is responsible for looking after the retail finance operations. GE Consumer Finance also governs the GE Capital Asia. Outside the United States, GE Consumer Finance performs its operations under the GE Money brand. GE Consumer Finance currently offers financial services in more than fifty countries. The company deals in credit cards, personal finance, mortgages and automobile solutions. It has a client base of more than 118 million customers throughout the world

工业设计外文翻译

Interaction design Moggridge Bill Interaction design,Page 1-15 USA Art Press, 2008 Interaction design (IxD) is the study of devices with which a user can interact, in particular computer users. The practice typically centers on "embedding information technology into the ambient social complexities of the physical world."[1] It can also apply to other types of non-electronic products and services, and even organizations. Interaction design defines the behavior (the "interaction") of an artifact or system in response to its users. Malcolm McCullough has written, "As a consequence of pervasive computing, interaction design is poised to become one of the main liberal arts of the twenty-first century." Certain basic principles of cognitive psychology provide grounding for interaction design. These include mental models, mapping, interface metaphors, and affordances. Many of these are laid out in Donald Norman's influential book The Psychology of Everyday Things. As technologies are often overly complex for their intended target audience, interaction design aims to minimize the learning curve and to increase accuracy and efficiency of a task without diminishing usefulness. The objective is to reduce frustration and increase user productivity and satisfaction. Interaction design attempts to improve the usability and experience of the product, by first researching and understanding certain users' needs and then designing to meet and exceed them. (Figuring out who needs to use it, and how those people would like to use it.) Only by involving users who will use a product or system on a regular basis will designers be able to properly tailor and maximize usability. Involving real users, designers gain the ability to better understand user goals and experiences. (see also: User-centered design) There are also positive side effects which include enhanced system capability awareness and user ownership. It is important that the user be aware of system capabilities from an early stage so that expectations regarding functionality are both realistic and properly understood. Also, users who have been active participants in a product's development are more likely to feel a sense of ownership, thus increasing overall satisfa. Instructional design is a goal-oriented, user-centric approach to creating training and education software or written materials. Interaction design and instructional design both rely on cognitive psychology theories to focus on how users will interact with software. They both take an in-depth approach to analyzing the user's needs and goals. A needs analysis is often performed in both disciplines. Both, approach the design from the user's perspective. Both, involve gathering feedback from users, and making revisions until the product or service has been found to be effective. (Summative / formative evaluations) In many ways, instructional

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英语专业毕业论文翻译 类论文 Document number:NOCG-YUNOO-BUYTT-UU986-1986UT

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黑龙江外国语学院本科生毕业论文(设计)任务书 摘要

索绪尔提出的语言符号任意性,近些年不断受到质疑,来自语言象似性的研究是最大的挑战。语言象似性理论是针对语言任意性理论提出来的,并在不断发展。象似性是当今认知语言学研究中的一个重要课题,是指语言符号的能指与所指之间的自然联系。本文以中国诗歌英译为例,探讨象似性在中国诗歌翻译中的应用,从以下几个部分阐述:(1)象似性的发展;(2)象似性的定义及分类;(3)中国诗歌翻译的标准;(4)象似性在中国诗歌翻译中的应用,主要从以下几个方面论述:声音象似、顺序象似、数量象似、对称象似方面。通过以上几个方面的探究,探讨了中国诗歌翻译中象似性原则的重大作用,在诗歌翻译过程中有助于得到“形神皆似”和“意美、音美、形美”的理想翻译效果。 关键词:象似性;诗歌;翻译

Abstract The arbitrariness theory of language signs proposed by Saussure is severely challenged by the study of language iconicity in recent years. The theory of iconicity is put forward in contrast to that of arbitrariness and has been developing gradually. Iconicity, which is an important subject in the research of cognitive linguistics, refers to a natural resemblance or analogy between the form of a sign and the object or concept. This thesis mainly discusses the application of the iconicity to the translation of Chinese poetry. The paper is better described from the following parts: (1) The development of the iconicity; (2) The definition and classification of the iconicity; (3) The standards of the translation to Chinese poetry; (4) The application of the iconicity to the translation of Chinese poetry, mainly discussed from the following aspects: sound iconicity, order iconicity, quantity iconicity, and symmetrical iconicity. Through in-depth discussion of the above aspects, this paper could come to the conclusion that the iconicity is very important in the translation of poetry. It is conductive to reach the ideal effect of “the similarity of form and spirit” and “the three beauties”. Key words: the iconicity; poetry; translation

论文中英文翻译

An Analysis of Cooperative Principles and Humorous Effects in Friend s 合作原则的分析和在朋友的幽默效应 Humor is a very intriguing and fascinating phenomenon of human society, which is multidimensional, complex and all pervasive. Therefore, many scholars and experts at all times and in all over the world have done profound research on humor. 幽默是人类社会的一个非常有趣和引人入胜的现象,这是多方面的,复杂和无孔不入的。所以,在任何时候,在世界各地的许多学者和专家总是对幽默进行深入的研究。 The significant functions of humor have aroused the interest of many scholars. About 2,000 years ago, people began the research on humor. However, the study of humor is not a simple task for the reason that it is an interdisciplinary science drawing upon a wide range of academic disciplines including biology, psychology, sociology, philosophy, geography, history, linguistics, literature, education, family science, and film studies and so on. Moreover, there are different reasons and purposes for humor. One may wish to be sociable, cope better, seem clever, solve problems, make a critical point, enhance therapy, or express something one could not otherwise express by means of humor. 显著幽默的功能已引起许多学者的兴趣。大约在2000年前,人们对幽默开始研究,然而,这项幽默的研究不是一个简单的任务,理由是它是一个跨学科的科学绘图在各种各样的学科,包括生物学、心理学、社会学、哲学、地理、历史、语言、文学、教育、家庭科学和电影研究等。此外,幽默有不同的原因和目的,人们可能希望有点大男子主义,随机应变,似乎是聪明,解决问题,使一个临界点,加强治疗,或表达的东西不能以其他方式表达幽默的方式。 Within the 20th century, linguistics has developed greatly in almost every area of the discipline from sounds, words and sentences to meaning and texts. Meanwhile, linguistic studies on humor have also extended considerably to social, cultural, and pragmatic concerns. One of the most noticeable achievements in linguistics over the

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文献综述和外文翻译撰写要求与格式规范

本科毕业论文(设计)文献综述和外文翻译 撰写要求与格式规范 一、毕业论文(设计)文献综述 (一)毕业论文(设计)文献综述的内容要求 1.封面:由学院统一设计,普通A4纸打印即可。 2.正文 综述正文部分需要阐述所选课题在相应学科领域中的发展进程和研究方向,特别是近年来的发展趋势和最新成果。通过与中外研究成果的比较和评论,说明自己的选题是符合当前的研究方向并有所进展,或采用了当前的最新技术并有所改进,目的是使读者进一步了解本课题的意义。文中的用语、图纸、表格、插图应规范、准确,量和单位的使用必须符合国家标准规定,引用他人资料要有标注。 文献综述字数在5000字以上。 正文前须附500字左右中文摘要,末尾须附参考文献。 参考文献的著录按在文献综述中出现的先后顺序编号。 期刊类文献书写方法:[序号]作者(不超过3人,多者用等表示).题(篇)名[J].刊名,出版年,卷次(期次):起止页次.

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中英文文献翻译

毕业设计(论文)外文参考文献及译文 英文题目Component-based Safety Computer of Railway Signal Interlocking System 中文题目模块化安全铁路信号计算机联锁系统 学院自动化与电气工程学院 专业自动控制 姓名葛彦宁 学号 200808746 指导教师贺清 2012年5月30日

Component-based Safety Computer of Railway Signal Interlocking System 1 Introduction Signal Interlocking System is the critical equipment which can guarantee traffic safety and enhance operational efficiency in railway transportation. For a long time, the core control computer adopts in interlocking system is the special customized high-grade safety computer, for example, the SIMIS of Siemens, the EI32 of Nippon Signal, and so on. Along with the rapid development of electronic technology, the customized safety computer is facing severe challenges, for instance, the high development costs, poor usability, weak expansibility and slow technology update. To overcome the flaws of the high-grade special customized computer, the U.S. Department of Defense has put forward the concept:we should adopt commercial standards to replace military norms and standards for meeting consumers’demand [1]. In the meantime, there are several explorations and practices about adopting open system architecture in avionics. The United Stated and Europe have do much research about utilizing cost-effective fault-tolerant computer to replace the dedicated computer in aerospace and other safety-critical fields. In recent years, it is gradually becoming a new trend that the utilization of standardized components in aerospace, industry, transportation and other safety-critical fields. 2 Railways signal interlocking system 2.1 Functions of signal interlocking system The basic function of signal interlocking system is to protect train safety by controlling signal equipments, such as switch points, signals and track units in a station, and it handles routes via a certain interlocking regulation. Since the birth of the railway transportation, signal interlocking system has gone through manual signal, mechanical signal, relay-based interlocking, and the modern computer-based Interlocking System. 2.2 Architecture of signal interlocking system Generally, the Interlocking System has a hierarchical structure. According to the function of equipments, the system can be divided to the function of equipments; the system

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