1、 第1页，共47页。目录 1、引言及其作用 2、如何写引言 3、引言部分的语言特征 4、总结第2页，共47页。1.引言及其作用 1.1 什么是引言 1.2 为什么要写引言 1.3 引言的作用 1.4 何时写引言第3页，共47页。What is Introduction?Introduction is the first section of a scientific paper,including the background information of the research,the nature and scope of the problem investigated.第4页，共47
2、页。Why do we have to write an introduction?Without an introduction it is sometimes very difficult for your readers to figure out what you are trying to say.There needs to be a thread of an idea that they will follow through your paper.第5页，共47页。What is the subject about?Why I(we)carried out the experi
3、ment,that is to say,what is the problem?How do we solve the problem?WhatHowWhyThe function of IntroductionTo answer the basic questions 第6页，共47页。When do we write theintroduction?Many books recommend writing your introduction last,after you finish your project.This is to make sure that you introduce
4、what you are actually going to say.第7页，共47页。2.如何写引言 2.1 引言的组成 2.2 引言的特点 2.3 引言的结构与布局 2.4 引言实例第8页，共47页。The content of an Introduction第9页，共47页。IntroductionBasic requirement第10页，共47页。Structural Layout of Introduction 1.1 Introducing the general research area including its background,importance,and pres
5、ent level of development1.2 Reviewing previous research in this areaIndicating the problem that has not been solved by previous research,raising a relevant question Specifying the purpose of your research4.1 Announcing your major findings 4.2 Outlining the contents of your paperThe first layerThe se
6、cond layerThe third layerThe fourth layer第11页，共47页。One Template a)题题X是重要的。是重要的。b)前人的工作前人的工作A、B曾经研究过这个问题。曾经研究过这个问题。c)A、B有一些缺陷。有一些缺陷。d)我们提出了方法我们提出了方法D。e)D的基本特征，和的基本特征，和A、B进行比较。进行比较。f)实验证明实验证明D比比A、B优越。优越。g)研究前景。研究前景。第12页，共47页。The background informationResearch methodThe authors researcharticle structur
7、e第13页，共47页。3.引言部分的语言特征 3.1 引言部分的时态与语态 3.2 引言部分常用的句型 3.3 引言部分常用的词语 3.4 引言部分的注意事项第14页，共47页。第15页，共47页。Present Tense The present tense(is,are)is used when stating generalizations or conclusions.e.g.1：This paper is organized as follows.e.g.2：In this paper,we adopt an IA scheme for SISO transmission第16页，共
8、47页。When describing recent advances in a certain research field,or aiming to emphasize the impact of something happening recently on the present,you are suggested to use present perfect tense.e.g.1:This approach has been exploited by Cadambe and Jafar in.e.g.2:The authors have shown that the maximum
9、 achievable DoF（degrees of freedom自由度）in the K-user time-varying single-input single-output(SISO,单输入单输出)Present Perfect Tense 第17页，共47页。Future Tense Sometimes,in the sentence including the objective of the research,Simple Future Tense is recommended.e.g.1:In Section III,however,we will argue that ge
10、neric matrices,namely,samples from the Gaussian unitary ensemble obey(1.10)for relatively large values of S.e.g.2:We are confident that finer arguments and perhaps new ideas will allow to derive versions of Theorem 1.5 with better bounds.第18页，共47页。Voice在学术论文中,我们可能经常会被是否可以使用we（我们）或I（我）的问题困扰。关于这点，一点要区
11、分we在这里指代什么。一般来说，作者使用we提及作者的研究团队而不是泛指人类群体。e.g.1：In this paper,we adopt an IA scheme for SISO transmission,and we try to modify the design in order to achieve higher sumrate（和速率）performance in the practical SNR region.（主动语态，we不泛指人群，而是作者所属研究团队）第19页，共47页。如果需要提及人类群体的认知状态，最好使用被动结构的句子，如：“It is know/though
12、that“，而不是用“We know/think that”。引言部分中，多使用被动语态，而不是主动语态we，尤其是中心的“报告”部分（was conducted，was designed等）。e.g.1 This scheme has been designed to achieve the asymptotic capacity in the IC（被动语态）e.g.2 This new approach of interference management has been named IA.（被动语态）第20页，共47页。exercise1、Brown(1998)_ the impor
13、tance of time management both when preparing for and actually sitting examinations.A.conclude B.concludes C.stress D.stresses2、For some years there has been an awarenrss of the dangers of Salmon farming in Scottish Lochs,and several studies(see e.g.,Brown 2000,Maclnnes2002)_ potential risks.A.indica
14、te B.have indicate C.claim D.have claimed第21页，共47页。3、In the Canadian study Primary School French,researchers_ a clear association between language proficiency and parental income(Lefebvre et al.1999).A.stated B.have stated C.demonstrated D.have demonstratedanswer:1.D 2.B 3.C第22页，共47页。sentence patter
15、n in Introduction第23页，共47页。Sentence pattern in IntroductionThe primary rule is to keep in scientific style第24页，共47页。Sentence patternVocabulary&Abbreviation:Make sure that your expression is clear,precise and concise.Use some common sentence patterns in the introduction.第25页，共47页。1、建立议题中心及概括议题内容的常用句型
16、有：.is a central issue in his development of is a typical/common problem in For a long time,it has been the case that.Most accounts/reports/publications claim/maintain that 第26页，共47页。e.g.1:However,According to studies,all mobile communication standards still include a SISO transmission mode.（建立议题中心）e
17、.g.2:In our contributions,we firstly introduce a way to optimize the precoding subspaces at all transmitters,exploiting the fact that channel matrices in the IA model are diagonal.Two solutions are derived;the first is achieved iteratively using projected gradient descent method,the second is a clos
18、ed-form solution that avoids the numerical computation,thus,resulting in a very low computational complexity.Secondly,we propose to optimize the precoding vectors at each transmitter within its precoding subspace.To this end,we combine each IA precoder with a new combination precoder.（概括议题内容）Example
19、第27页，共47页。2、回顾先前研究结果的常用句型：:Ample(丰富的)researches have been conducted regarding/on.this approach has been exploited in.In most existing.,.is avoided either by.or by.have proposed a new approach in order to show that.第28页，共47页。e.g.1:In most existing wireless multi-user communication systems,interferenc
20、e is avoided either by coordinating the users to orthogonalize the channel access or by treating interference from other transmitters as noise.e.g.2:In 3,Maddah-ali et al.have proposed a new approach in order to show that the N-antennas MIMO X channels can offer as much as 4N/3 degrees of freedom(Do
21、F).Example第29页，共47页。3、概述研究的欠缺时常用句型 However,until recently,.remained unknown.there are still no observations at present about.Little research results have been reported at this point concerning.Research about.needs to be further conducted from the relevant researches第30页，共47页。Examplee.g.1:However,unt
22、il recently,the capacity region of the interference channel(IC)remained unknown.e.g.2:In 3,Maddah-ali et al.have proposed a new approach in order to show that the N-antennas MIMO X channels can offer as much as 4N/3 degrees of freedom(DoF).第31页，共47页。4、陈述研究的结果的常用句型 Our experiment/project shows/indica
23、tes.The results of the present research confirm/support.Examplee.g.1:The result of the present research confirm that IA is to jointly design all transmitted signals such that interfering signals at each receiver overlap and remain distinct from the desired signal.第32页，共47页。5、阐述研究目的可用下列句型 In this pap
24、er,we propose a.for.The main purpose/aim/objective of this project/research is to analyze the effect of.on.The present experiment is undertaken aiming to achieve.e.g.1:In this paper,we adopt an IA scheme for SISO transmission,and we try to modify the design in order to achieve higher sumrate perform
25、ance in the practical SNR region.Most references,among which 7-9,deal with IA schemes for MIMO interference channels.第33页，共47页。6、下列句型可用于介绍学术论文结构 This paper proceeds as follows.The structure of the paper is as follows.Details on.and.are discussed in later sections.Examplee.g.1:This paper is organized
26、 as follows.Section 2 describes the system model.Then,Section 3 presents the IA design in SISO IC.In Section 4,we propose to optimize the network sum rate through a diagonal matrix.第34页，共47页。exercise1、The paper shows an approach to model ontology（存在论）and epistemology（认知论）for an agentbased wayfinding
27、 system.本文展示了模拟存在论和认知论在代理装置寻路系统的路径。2、It is our goal to try to reveal some of the basic elements of effective team teaching partnership and to discuss whether this model of team teching influence teacher development.我们的目的是要揭示有效团队教学合作的某些基本元素，讨论团队教学是否影响教师的发展模式。3、Very little is known,however,about the c
28、hance of benefit from chemotherapy(化疗)in this disease.然而，对这种疾病化疗的有效几率情况不详第35页，共47页。Common expression in Introduction第36页，共47页。1、研究重要性的常用表达使用recently、focus on、This new approach of等表达，常用于引言首句表达当前研究的重要性。e.g.1 However,until recently,the capacity region of the interference channel(IC)remained unknown,exc
29、ept for some special cases such as strong and very strong interference 1,2.（recently表达近期研究状况）e.g.2 This new approach of interference management has been named IA.（一种新方法）e.g.3 The key idea of IA is to jointly design all transmitted signals such that interfering signals at each receiver overlap and re
30、main distinct from the desired signal.（IA的主要想法是）e.g.4 Early compressed sensing works mainly focus on non-adaptive and one-shot measurement schemes.（主要关注于）第37页，共47页。2、概述文献综述中的常用表达通常使用动词的过去时，用以陈述已完成的研究。e.g.1 In 3,Maddah-ali et al.have proposed a new approach in order to show that（proposed表示过去提出的新方法）e.
31、g.2 They have extended the idea of IA from space/time/frequency dimensions to the signal level dimensions（extended表示过去对IA理论的扩展）e.g.3 In contrast,Choi et al.have introduced another IA design that aims to achieve a higher multiplexing gain at any given signal dimension 6.（introduced表示Choi et al.过去引入的这
32、种设计方法）第38页，共47页。3、用于表达已有研究的空白以及对已有研究的质疑和批评的常用方式用于表达早期研究中的缺陷或未能解决的问题，通常还会使用however，but，although，nevertheless等具有转折意义的词汇。e.g.1 However,until recently,the capacity region of the interference channel(IC)remained unknown,except for some special cases such as strong and very strong interference 1,2.（提出以前的研
33、究缺陷和问题的表达，常用表转折词汇）e.g.2 However,a closed-form solution does not seem trivial。（提出质疑）第39页，共47页。4、用于表达当前研究课题的目的、意义的常用方式包括论文的研究目的、策略以及论文的设计。e.g.1 In this paper,we adopt an IA scheme for SISO transmission,and we try to modify the design in order to achieve higher sumrate（和速率）performance in the practical
34、SNR region.（论文采用方案、手段以及目的的表达）e.g.2 This is the reason why in this paper,we try to define efficient IA schemes for SISO interference channels.（原因或本文研究意义的表达）第40页，共47页。e.g.3:In our contributions,we firstly introduce a way to optimize the precoding subspaces at all transmitters,exploiting the fact that
35、channel matrices in the IA model are diagonal.（引入方法）e.g.4:Secondly,we propose to optimize the precoding vectors at each transmitter within its precoding subspace.(提出方法)e.g.5:This paper is organized as follows.（表达论文行文安排）第41页，共47页。Some Points for Attention in introduction第42页，共47页。ConcisenessThe intro
36、duction should be concise and clear.Never write an extensive review of the field.Never make this section into a history lesson.Begin your introduction by clearly identifying the subject area of interest.You may use key words from your“Title”in the first few sentences.Get to the primary subject quick
37、ly without losing focus.第43页，共47页。Citing Relevant LiteratureFor the purpose of leading the reader to some point,it is necessary to review the relevant literature,but you should provide the most salient background rather than an exhaustive review.Ensure that the literature cited is balanced,up to dat
38、e and relevant.Avoid general reference works such as textbooks.If you have been writing the introduction before the work is started,you must pay attention to the pertinent literature published while the study is in progress.第44页，共47页。After giving a broader context,you may need to give other backgrou
39、nd information such as previous research that has been done and explain how the present experiment will help to clarify or expand the knowledge in this general area.Emphasize your specific contribution to the topic.However,never minimize or dismiss contributions made by others.And expressions such a
40、s“novel”,“first time”,“first ever”,are not preferred.Use them sparingly.Modesty第45页，共47页。SummaryFollow the basic rules:The Introduction should present first,with all possible clarity,the nature and scope of the problem investigated.It should briefly review the pertinent literature to orient the reader.It should state the method of the investigation.It should state the principal results of the investigation.It should state the principal conclusions suggested by the results.Tense:Use simple present tense,simple present perfect tense and simple uture tense.第46页，共47页。Thank You!第47页，共47页。
