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第一学段实用性写话教学目标定位与教学路径——以二年级下册写话“我想养只小动物”为例
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作者 赵培敏 《教学月刊(小学版)(语文)》 2024年第6期24-27,共4页
实用性写话是第一学段的重要教学内容。以二年级下册第七单元写话“我想养只小动物”为例,教师可从两个方面入手:宏观上,解读课标和教材,准确定位教学目标;微观上,通过创设情境、前置评价标准和搭建学习支架,优化实践路径。由此促进学... 实用性写话是第一学段的重要教学内容。以二年级下册第七单元写话“我想养只小动物”为例,教师可从两个方面入手:宏观上,解读课标和教材,准确定位教学目标;微观上,通过创设情境、前置评价标准和搭建学习支架,优化实践路径。由此促进学生不断优化自己的写话成果,提升语文核心素养。 展开更多
关键词 实用 实用阅读与交流 习作支架
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硅烷化活性炭的表面性质 被引量:8
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作者 赵振国 沈钟 +1 位作者 陈丽特 邵长生 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 1989年第11期1119-1123,共5页
测定了活性炭经三甲基氯硅烷蒸气处理后比表面、比孔容、平均孔径等的变化;研究了硅烷化炭表面的润湿性质和吸附性质.结果表明,随活性炭与三甲基氯硅烷反应时间的延长,其比表面和比孔容急剧减小,而孔径分布和平均孔径无明显变化;硅烷化... 测定了活性炭经三甲基氯硅烷蒸气处理后比表面、比孔容、平均孔径等的变化;研究了硅烷化炭表面的润湿性质和吸附性质.结果表明,随活性炭与三甲基氯硅烷反应时间的延长,其比表面和比孔容急剧减小,而孔径分布和平均孔径无明显变化;硅烷化后炭表面的疏水性明显增强;硅烷化炭自水中对正丁醇的吸附量增大. 展开更多
关键词 话性 硅烷化改 润湿 吸附
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阻抑褪色光度法测定水中阴离子表面活性剂 被引量:3
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作者 金晓英 余立斌 陆李春 《光谱实验室》 CAS CSCD 2006年第6期1225-1229,共5页
研究了甲基橙(M O)、氯化十六烷基吡啶(CPC)以及阴离子表面活性剂之间的反应,结果发现CPC与M O形成缔合物,可使M O发生褪色反应,而阴离子表面活性剂则对该反应有阻抑作用。基于以上反应机理,建立了阻抑褪色光度法测定水体中阴离子表面... 研究了甲基橙(M O)、氯化十六烷基吡啶(CPC)以及阴离子表面活性剂之间的反应,结果发现CPC与M O形成缔合物,可使M O发生褪色反应,而阴离子表面活性剂则对该反应有阻抑作用。基于以上反应机理,建立了阻抑褪色光度法测定水体中阴离子表面活性剂的方法。实验表明,反应体系适合的pH为5.59,测定最大吸收波长为465nm,在体积为10mL的溶液中,12.5μg/mL M O和15.0μg/mL CPC存在条件下,十二烷基苯磺酸钠(SDBS)在0—15.0μg/mL符合比耳定律,该方法的相对标准偏差小于1.5%,方法的检出限为0.707m g/L,试样加标回收率为99.38%—102.0%。该法可用于生活污水或洗涤工业生产等阴离子表面活性剂含量较高的水体的测定。 展开更多
关键词 阴离子表面话性 阻抑褪色光度法 甲基橙 氯化十六烷基吡啶
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不同基因型大豆种子脂肪氧化酶与己醛生成量的相关性 被引量:2
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作者 江巨鳌 田森林 《湖南农业大学学报(自然科学版)》 CAS CSCD 北大核心 2004年第3期224-226,共3页
在添加亚油酸作为反应底物的条件下,以分别含有Lox1Lox3和Lox1Lox2的大豆为材料,研究Lox1Lox3和Lox1Lox2在不同遗传背景下的己醛生成量.结果表明各个Lox1Lox3材料之间在己醛生成量上存在一定差异,变异系数为6.88%;各个Lox1Lox2材料之间... 在添加亚油酸作为反应底物的条件下,以分别含有Lox1Lox3和Lox1Lox2的大豆为材料,研究Lox1Lox3和Lox1Lox2在不同遗传背景下的己醛生成量.结果表明各个Lox1Lox3材料之间在己醛生成量上存在一定差异,变异系数为6.88%;各个Lox1Lox2材料之间在己醛生成量上也存在一定差异,变异系数为6.51%.但进一步作显著性测验都未能达到显著水平,说明不同遗传背景对大豆种子脂肪氧化酶Lox1Lox3和Lox1Lox2在生成己醛量活性方面没有明显影响. 展开更多
关键词 大豆 脂肪氧化酶 遗传背景 己醛生成量 话性差异
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现代中国“文学话”批评的生成及其体式特征——以对话体“文学话”为例 被引量:2
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作者 黄念然 杨瑞峰 《湖北大学学报(哲学社会科学版)》 CSSCI 北大核心 2020年第1期52-58,I0002,共8页
话体批评之确立伏根于中国古典文论的"话"性特质。狭义之"话"性指由"话"字的"故事"之义规定的话体文学批评在内容方面的"故事性"取向;广义之"话"性则指古典文论碎金散玉... 话体批评之确立伏根于中国古典文论的"话"性特质。狭义之"话"性指由"话"字的"故事"之义规定的话体文学批评在内容方面的"故事性"取向;广义之"话"性则指古典文论碎金散玉般的理论寄生形态和印象式批评思维影响之下形成的"漫谈"风格。现代"文学话"自传统"文话"裂变而来,它一方面继承了传统话体批评的基本特性,另一方面又对其进行了改造,而其改造的主要表现之一即为对一种全新的"对话体"论述风格的采用。"文学话"之"对话体"主要分为"书信对话体"、"问答对话体"和"商榷对话体",这种论述风格的形成,使得"文学话"之"散"实现了对传统话体批评"漫谈"特征的积极超越,极大地丰富了中国话体文学批评的理论武库。 展开更多
关键词 “漫谈”风格 文学
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临床中胆红素增高致HBsAg假阳性1例
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作者 李大伟 《中华医学全科杂志》 2003年第3期96-96,共1页
关键词 胆红素增高 HBSAG假阳 ELISA法 免疫话性 抗原 诊断试剂盒
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多媒体环境下的教学语言 被引量:3
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作者 昌庆钟 《湘潭师范学院学报(社会科学版)》 2005年第5期118-120,共3页
教育技术进步与教学语言的发展变化密切相关,特别是多媒体技术的应用与推广,对传统教学语言构成了巨大的冲击,使之在类型、表现形式及运用方式上都发生了重大的变化。主要体现为讲述性语言趋于简化,阐释性语言日益强化,有声教学语言与... 教育技术进步与教学语言的发展变化密切相关,特别是多媒体技术的应用与推广,对传统教学语言构成了巨大的冲击,使之在类型、表现形式及运用方式上都发生了重大的变化。主要体现为讲述性语言趋于简化,阐释性语言日益强化,有声教学语言与无声教学语言多样化,对话性语言成为教学语言的核心。多媒体环境下教学语言变化的同时也呈现许多新的问题。教师在适应教学语言变化的同时,要注意增进师生情感交流,促进师生思维互动;强化过渡性语言的运用,保持教学进程的流畅;冲破技术障碍,防止师生对话性语言的缺失与教师体态语言的弱化。 展开更多
关键词 教学语言 多媒体环境 多媒体技术 发展变化 技术进步 运用方式 情感交流 技术障碍 多样化 过渡 强化 话性 教师
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模因论视阙下研究跨文化交际语用失误
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作者 张淑娟 《经济师》 2012年第3期53-54,共2页
从模因论角度看,跨文化语用失误是由于跨语种语码对等转换的表现型模因引起的。根据模因的历时和共时传递特征及模因类型,以新的视角解释跨文化交际语用失误现象的产生。通过背诵和模仿的同化、记忆手段,及重复与类推的复制传播机制,强... 从模因论角度看,跨文化语用失误是由于跨语种语码对等转换的表现型模因引起的。根据模因的历时和共时传递特征及模因类型,以新的视角解释跨文化交际语用失误现象的产生。通过背诵和模仿的同化、记忆手段,及重复与类推的复制传播机制,强化程式性话语模因在生命周期循环中的输入与输出,能够明显提高学生在跨文化交际中的语言运用及应变能力。 展开更多
关键词 模因论模因 程式 语模因语用失误
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甲醇燃料电池的电极催化剂研究
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作者 谷口贡 《轻型汽车技术》 2001年第6期12-14,共3页
1、前言在直接甲醇燃料电池(DMFC)中,电极催化剂是与离子交换膜片同等最重要的部件。在 DMFC 用的电极催化剂的最大难点是阳极上的甲醇氧化反应的超电压这个很大的问题。其原因主要是由于甲醇在氧化的过程中所产生的中间生成物 CO
关键词 甲醇燃料电池 电极催化剂 话性
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SECCL-based research on prefabricated chunks in achieving oral English fluency
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作者 刘春阳 杨雨时 《Sino-US English Teaching》 2010年第11期16-21,共6页
Fluency on oral English has always been the goal of Chinese English learners. Language corpuses offer great convenience to language researches. Prefabricated chunks are a great help for learners to achieve oral Englis... Fluency on oral English has always been the goal of Chinese English learners. Language corpuses offer great convenience to language researches. Prefabricated chunks are a great help for learners to achieve oral English fluency. With the help of computer software, chunks in SECCL are categorized. The conclusion is in the process of chunks acquiring, emphasis should be on content-related chunks, especially specific topic-related ones. One effective way to gain topic-related chunks is to build topic-related English corpus of native speakers. 展开更多
关键词 oral English fluency prefabricated chunks English corpus content-related chunks specific topic-related chunks
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A Novel Vertical Handoff Algorithm with Dynamic Weights in Wireless Heterogeneous Networks 被引量:2
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作者 Liu Xia Zhao Fangming Jiang Lingge 《China Communications》 SCIE CSCD 2010年第5期70-76,共7页
In order to enhance the quality of vertical handoff in an overlay wireless network, multiple attributes are taken into account when optimizing the vertical handoff decision including user-based and network-based QoS f... In order to enhance the quality of vertical handoff in an overlay wireless network, multiple attributes are taken into account when optimizing the vertical handoff decision including user-based and network-based QoS factors. In this paper, we develop a novel vertical handoff algorithm in an integrated 3G cellular and Wireless LAN networks. The proposed algorithm can adjust the weight of each QoS attribute dynamically as the networks change, trace the network condition and choose the optimal access point at transient regions. Simulation results show that this algorithm is able to provide accurate handoff decision, resulting in small unnecessary handoff numbers, good performance of throughput and handoff delay in heterogeneous environments. 展开更多
关键词 vertical handoff multiple attrbute dynamic weight heterogeneous networks
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Interdiscursivity and Promotional Discourse:A Corpus-Assisted Genre Analysis of About Us Texts on Chinese University Websites 被引量:1
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作者 Tao XIONG Qiuna LI 《Chinese Journal of Applied Linguistics》 2020年第4期397-416,525,共21页
The debate on the marketization of discourse in higher education has sparked and sustained interest among researchers in discourse and education studies across a diversity of contexts.While most research in this line ... The debate on the marketization of discourse in higher education has sparked and sustained interest among researchers in discourse and education studies across a diversity of contexts.While most research in this line has focused on marketized discourses such as advertisements,little attention has been paid to promotional discourse in public institutions such as the About us texts on Chinese university websites.The goal of the present study is twofold:first,to describe the generic features of the university About us texts in China;and second,to analyze how promotional discourse is interdiscursively incorporated in the discourse by referring to the broader sociopolitical context.Findings have indicated five main moves:giving an overview,stressing historical status,displaying strengths,pledging political and ideological allegiance,and communicating goals and visions.Move 3,displaying strengths,has the greatest amount of information and can be further divided into six sub-moves which presents information on campus facilities,faculty team,talent cultivation,disciplinary fields construction,academic research,and international exchange.The main linguistic and rhetorical strategies used in these moves are analyzed and discussed. 展开更多
关键词 About us text Chinese universities genre analysis INTERDISCURSIVITY MARKETIZATION promotional discourse
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High Delivery Performance Opportunistic Routing Scheme for Delay Tolerant Networks 被引量:1
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作者 Lu Xiaofeng Pan Hui Pietro Lio 《China Communications》 SCIE CSCD 2012年第6期145-153,共9页
In Delay Tolerant Networks (DTNs), establishing routing path from a source node to a destination node may not be possible, so the opportunistic routings are widely used. The energy and buffer constraints are general i... In Delay Tolerant Networks (DTNs), establishing routing path from a source node to a destination node may not be possible, so the opportunistic routings are widely used. The energy and buffer constraints are general in DTNs composed of the mobile phones or Pads. This paper proposes a novel opportunistic routing protocol, denoted by Large Opporturioty (LAOP), for the energy and buffer constrained DTNs. The objective of LAOP is to reach many receivers of a message with a small number of transmissions. By LAOP, the sender floods a message when the number of its neighbors is not less than a threshold. We compare the delivery performance of LAOP with other four widely used Delay or Disruption Tolerant Network (DTN) routing protocols, Direct Delivery, Epidemic routing, SprayAndWait and PRoPHET and demonstrate that LAOP can improve the delivery performance and decrease the delivery latency simultaneously. 展开更多
关键词 computer networks DTNs LAOP opportunistic routing
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Testing a mobile app for child abuse treatment: A mixed methods study
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作者 Shuhong Luo Ann S.Botash 《International Journal of Nursing Sciences》 CSCD 2020年第3期320-329,共10页
Objective:This study provides a preliminary evaluation of the usability and acceptability of a mobile application(sexual assault care algorithm,SACA).Methods:An explanatory sequential mixed methods research was used.A... Objective:This study provides a preliminary evaluation of the usability and acceptability of a mobile application(sexual assault care algorithm,SACA).Methods:An explanatory sequential mixed methods research was used.A quantitative survey was followed up by a qualitative study.A convenience sample of participants(n=4)was recruited.The research was conducted on a one-on-one basis.In the quantitative phase,a random assignment technique was used to divide four participants into two groups of two participants each.Post-Study System Usability Questionnaire(PSSUQ)and Acceptability e-Scale were used to collect quantitative data.In the qualitative phase,interview,observation,and documentation were used to collect qualitative data.Data were analyzed both quantitative and qualitatively.The qualitative data were linked with the initial quantitative data to determine how the follow-up qualitative data helped explain the initial quantitative results.Results:The quantitative results suggested that SACA has high usability(5.05±1.83)and acceptability(3.81±1.22).The qualitative results further indicate that the participants thought SACA was easy to use and useful,and most of them would recommend it to others.Areas of improvement include adding features that would calculate and validate the elapsed time since the sexual assault,adding explanations to some buttons,and providing training.Conclusions:Our findings highlight the value of using a mixed methods research design to conduct a usability and acceptability test.Nurses are more likely to adopt a new technology for their evidencebased practice when the technology is easy to use and useful and requires less time to find the right piece of guideline evidence.Individualized training needs to be designed based on users'characteristics. 展开更多
关键词 ACCEPTABILITY Child sexual assault Clinical guideline Mixed methods research design Mobile application Technology USABILITY
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A Corpus-Based Analytical Study on Military and Security Developments Involving People's Republic of China 被引量:2
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作者 MEI Zhao-yang YANG Min 《Sino-US English Teaching》 2015年第7期510-518,共9页
This paper contrasts Military Power of the People's Republic of China from the year of 2000 to 2009 and Military and Security Developments Involving People's Republic of China from the year 2010 to 2013 with corpus ... This paper contrasts Military Power of the People's Republic of China from the year of 2000 to 2009 and Military and Security Developments Involving People's Republic of China from the year 2010 to 2013 with corpus analysis. It distinguishes the new reports' differences from the old ones and tries to explore American's discourse colonization and discourse hegemony through corpus software WordSmith 5.0-Keywords and Concordance analysis of high frequency words. The significance of the study is that it enlightens military texts which will influence audiences' viewpoints and provides a new perspective for strategies replying American media war. 展开更多
关键词 corpus Military Power of the People's Republic of China and Military Security Developments Involving People's Republic of China Sino-America relation
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A Symmetric Key Exchange Protocol Bsaed on Virtual S-Box 被引量:2
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作者 YIN Yifeng GAN Yong WEN Heyu LI Tianbao 《China Communications》 SCIE CSCD 2014年第A02期46-52,共7页
Based on the theory of polymorphic virtual S-box, the paper presents a symmetric key exchange protocol to solve the problem of session keys delete shared in the computational complexity temporary trading scenario. Bot... Based on the theory of polymorphic virtual S-box, the paper presents a symmetric key exchange protocol to solve the problem of session keys delete shared in the computational complexity temporary trading scenario. Both parties jointly construct a highly nonlinear SPN core algorithm. The paper the connotation of polymorphic cipher theory, making use of the method of self-compiler based expansion factor to collect random parameter sets held by each of the parties containing its own information 5-tuple private keys array Kpa[5] and Kpb[5].The more efficient polymorphism virtual S-box is constructed. The method of secret split for the public key cryptography features can be implemented by symmetry cipher system. The research results will provide a theoretical basis to solve the key exchange problems for short- term communications partner based on symmetric cryptography. 展开更多
关键词 virtual S-box the virtual iterativefunction (VIF) secrecy sub-systems
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Studies on Interdiscursivity
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作者 WU Jian-guo 《Sino-US English Teaching》 2012年第7期1312-1317,共6页
The present paper defines interdiscursivity as the mixing of diverse genres, discourses, or styles in a single text. It also traces the origin of interdiscursivity and takes it as a special kind of intertextuality. Th... The present paper defines interdiscursivity as the mixing of diverse genres, discourses, or styles in a single text. It also traces the origin of interdiscursivity and takes it as a special kind of intertextuality. Then the paper gives a review of interdiscursivity studies in literary and non-literary fields. The former is usually conducted from the stylistic approach, while the latter from the CDA (critical discourse analysis) approach. The contributions and limitations of the previous studies are also summarized with the purpose of presenting an objective picture of the research. Based upon the detailed review, the paper offers some perspectives for the future research. It is hoped that this will shed some light on our understanding of interdiscursivity. 展开更多
关键词 INTERDISCURSIVITY stylistic approach CDA (critical discourse analysis) approach PERSPECTIVE
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Children's Fantasy With Mythical Echoes: Redefining Womanhood and Greekness
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作者 Evangelia Moula 《Journal of Literature and Art Studies》 2012年第8期785-792,共8页
Ancient Greece having survived uninterruptedly through centuries, consists an incontestably cultural capital of overriding importance for the global community and especially for Greece itself. Mythical elements usuall... Ancient Greece having survived uninterruptedly through centuries, consists an incontestably cultural capital of overriding importance for the global community and especially for Greece itself. Mythical elements usually become frameworks or structures, in which Greek literary tradition encodes Greek national virtues and promotes nationalistic goals. On the other hand, myth's adaptations to different chrono-topes generate diversified cultural reception, adjusted to the era and the audience's expectations. The mythical figures are constantly invested in different conceptual schemata, which correspond to the altered way of thinking. Myth is also usually embedded in or underlies fantasy genre, which becomes a vehicle for utterances on women's rights. In this paper, we are going to examine closely three "fantasy" novels for children with mythical intertextual elements: The Fortunate lsles (1989), Torch (1987), and Sirena (1998), whose plot takes place in Greece and we will try to explore: (1) how is Greekness being perceived and presented; and (2) how is female identity being introjected or depicted, in order to find out if the subversive potential of the fantasy genre reworks and rationalizes femininity and Greekness, which have for so long been exploited by the patriarchal or nationalistic status quo. 展开更多
关键词 MYTH FANTASY Greekness womanhood PATRIARCHY SUBVERSION
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The Decisive Moment as an Event in Photographic Discourse
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作者 Leny Pimenta Dionéia M. Monte-Serrat 《Sino-US English Teaching》 2015年第12期984-991,共8页
We propose using the concept of decisive moment in order to deconstruct the obvious ideological effects found in discourse. The subject is constituted in enunciation, and its polysemic discourse clashes with the trans... We propose using the concept of decisive moment in order to deconstruct the obvious ideological effects found in discourse. The subject is constituted in enunciation, and its polysemic discourse clashes with the transparency of meaning. According to Pêcheux (1988), the contradictions in discourse simultaneously establish regularity and instability of meanings, leading it to misunderstanding, to the event. Photography destabilizes that which is already formulated and brings out that which is new, the unexpected meaning, the decisive moment. We analyze this process in the picture by Sebastiao Salgado---"The cradle of inequality lies in the inequality of the cradle". (CAPES-BEX 4394/10-0, FAPESP 09/54417-4, CNPq.) 展开更多
关键词 DISCOURSE IDEOLOGY SUBJECT EVENT decisive moment
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The Shroud and the Trope: Representations of Discourse and of the Feminine in Homer's Odyssey
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作者 Alexandre Veloso de Abreu 《Journal of Literature and Art Studies》 2013年第12期757-764,共8页
Understanding that Homer's Odyssey (1998) has a feminine perspective, this paper intends to explore the Greek epic placing queen Penelope as the protagonist, observing, mainly, the narratological shifts in the stor... Understanding that Homer's Odyssey (1998) has a feminine perspective, this paper intends to explore the Greek epic placing queen Penelope as the protagonist, observing, mainly, the narratological shifts in the story grammar, duration and character elaboration. This study also uses Paul Ricoeur's The Rule of Metaphor (2008) to analyze the episode of the shroud in Homer's Odyssey. Ricoeur sees metaphor in three distinct levels: the level of lexis where he bases himself in the works of Aristotle; the level of phrase in which he recurs to the structuralist linguistician l^mile Benveniste; and the metaphor in the level of discourse, when Ricoeur himself devises an elaborate study of the figure of speech. Penelope's weaving can be understood as a representation of discourse and of the feminine. Such analogy transcends the stereotype she is often given and defines a new role for the character in the epic. 展开更多
关键词 NARRATOLOGY GENRE FEMININE PENELOPE classical literature
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