ChatGPT and similar large language models(LLMs)have rapidly caught the sci-entific and popular imagination,inviting reflections on their potential and risk for science(Grimaldi&Ehrler,2023;Nature,2023;Thorp,2023;v...ChatGPT and similar large language models(LLMs)have rapidly caught the sci-entific and popular imagination,inviting reflections on their potential and risk for science(Grimaldi&Ehrler,2023;Nature,2023;Thorp,2023;van Dis et al.,2023).展开更多
Vocabulary is the basic element of a language,and the core part of language learning.English vocabulary can be divid ed into receptive vocabulary and productive vocabulary.Language learners often focus on the former,b...Vocabulary is the basic element of a language,and the core part of language learning.English vocabulary can be divid ed into receptive vocabulary and productive vocabulary.Language learners often focus on the former,but ignore the latter.How ever,productive vocabulary plays an important role in language learning.This article makes an in-depth analysis for the relation ship between them then gives some suggestions to language learners who are learning vocabulary.展开更多
The history of language study shows widely different attitudes concerning the relationship between spoken and written language. After a person's born,he or she learns spoken language before learning written langua...The history of language study shows widely different attitudes concerning the relationship between spoken and written language. After a person's born,he or she learns spoken language before learning written language; therefore,many linguists consider written language a written form of spoken language,the function of which is to record the human sounds. Meanwhile,for centuries,the written language held a preeminent place. It was the medium of literature,which was felt to provide language with permanence and authority (David Crystal,2002). Therefore,what are the general differences between spoken and written language to make them present totally different functions? Accordingly,this essay will compare spoken language and written language to identify their general differences in three aspects.展开更多
Second language acquisition can not be understood without addressing the interaction between language and cognition. Cognitive theory can extend to describe learning strategies as complex cognitive skills. Theoretical...Second language acquisition can not be understood without addressing the interaction between language and cognition. Cognitive theory can extend to describe learning strategies as complex cognitive skills. Theoretical developments in Anderson’s production systems cover a broader range of behavior than other theories, including comprehension and production of oral and written texts as well as comprehension, problem solving, and verbal learning.Thus Anderson’s cognitive theory can be served as a rationale for learning strategy studies in second language acquisition.展开更多
Purpose:This work aims to normalize the NLPCONTRIBUTIONS scheme(henceforward,NLPCONTRIBUTIONGRAPH)to structure,directly from article sentences,the contributions information in Natural Language Processing(NLP)scholarly...Purpose:This work aims to normalize the NLPCONTRIBUTIONS scheme(henceforward,NLPCONTRIBUTIONGRAPH)to structure,directly from article sentences,the contributions information in Natural Language Processing(NLP)scholarly articles via a two-stage annotation methodology:1)pilot stage-to define the scheme(described in prior work);and 2)adjudication stage-to normalize the graphing model(the focus of this paper).Design/methodology/approach:We re-annotate,a second time,the contributions-pertinent information across 50 prior-annotated NLP scholarly articles in terms of a data pipeline comprising:contribution-centered sentences,phrases,and triple statements.To this end,specifically,care was taken in the adjudication annotation stage to reduce annotation noise while formulating the guidelines for our proposed novel NLP contributions structuring and graphing scheme.Findings:The application of NLPCONTRIBUTIONGRAPH on the 50 articles resulted finally in a dataset of 900 contribution-focused sentences,4,702 contribution-information-centered phrases,and 2,980 surface-structured triples.The intra-annotation agreement between the first and second stages,in terms of F1-score,was 67.92%for sentences,41.82%for phrases,and 22.31%for triple statements indicating that with increased granularity of the information,the annotation decision variance is greater.Research limitations:NLPCONTRIBUTIONGRAPH has limited scope for structuring scholarly contributions compared with STEM(Science,Technology,Engineering,and Medicine)scholarly knowledge at large.Further,the annotation scheme in this work is designed by only an intra-annotator consensus-a single annotator first annotated the data to propose the initial scheme,following which,the same annotator reannotated the data to normalize the annotations in an adjudication stage.However,the expected goal of this work is to achieve a standardized retrospective model of capturing NLP contributions from scholarly articles.This would entail a larger initiative of enlisting multiple annotators to accommodate different worldviews into a“single”set of structures and relationships as the final scheme.Given that the initial scheme is first proposed and the complexity of the annotation task in the realistic timeframe,our intraannotation procedure is well-suited.Nevertheless,the model proposed in this work is presently limited since it does not incorporate multiple annotator worldviews.This is planned as future work to produce a robust model.Practical implications:We demonstrate NLPCONTRIBUTIONGRAPH data integrated into the Open Research Knowledge Graph(ORKG),a next-generation KG-based digital library with intelligent computations enabled over structured scholarly knowledge,as a viable aid to assist researchers in their day-to-day tasks.Originality/value:NLPCONTRIBUTIONGRAPH is a novel scheme to annotate research contributions from NLP articles and integrate them in a knowledge graph,which to the best of our knowledge does not exist in the community.Furthermore,our quantitative evaluations over the two-stage annotation tasks offer insights into task difficulty.展开更多
BACKGROUND Journal Impact Factor™(JIF)is often used to evaluate the relative reputation and quality of academic journals in their respective fields,and can greatly influence the quality and scope of subsequent manuscr...BACKGROUND Journal Impact Factor™(JIF)is often used to evaluate the relative reputation and quality of academic journals in their respective fields,and can greatly influence the quality and scope of subsequent manuscript submissions.Therefore,many if not all academic journals are interested in increasing their JIF,to improve their academic impact.AIM To determine the importance of the integrity of the editorial and publication process in improving the academic influence of academic journals and the JIF of academic journals.METHODS In this paper,we describe our statistical analysis of bibliometric factors-including the 2021 JIFs released in the Journal Citation Report™2022,discipline rankings,received and published articles in 2019-2021,and webpage visits and downloads-for seven journals published by Baishideng Publishing Group(Baishideng)and indexed in Science Citation Index Expanded™;ultimately,we introduce and discuss the editing and publishing processes of Baishideng’s journals in their entirety,as they form the basis for our objective of safeguarding and bolstering integrity in academic publication.RESULTS For the seven journals assessed,their 2021 JIFs were basically unchanged from 2020,with the current metric ranging from 5.374 for World Journal of Gastroenterology(WJG)to 1.534 for World Journal of Clinical Cases(WJCC).Further assessments of the journals’bibliometrics from 2019 to 2020,showed that World Journal of Stem Cells has the highest self-citation rate(1.43%)and World Journal of Gastrointestinal Surgery has the lowest(0.21%).Additionally,the total 3012 articles published during this period were cited by more than 20000 articles in approximately 8000 academic journals.Of note,the 1102 articles published in WJG were cited by articles in 3059 journals,among which 171 journals have a JIF of>10,including internationally renowned academic journals such as CA-A Cancer Journal for Clinicians(2021 JIF 286.130,record count:1),Lancet(2021 JIF 202.731,record count:4),Nature Reviews Immunology(2021 JIF 108.555,record count:2),Nature Reviews Gastroenterology&Hepatology(2021 JIF 73.082,record count:9),Lancet Gastroenterology&Hepatology(2021 JIF 45.042,record count:8),Gastroenterology(2021 JIF 33.883,record count:19),and Gut(2021 JIF 31.793,record count:21).This suggests that Baishideng’s journals have been widely recognized for their academic quality.In the Reference Citation Analysis(RCA)database,all seven Baishidengpublished journals obtained a 2022 Journal Article Influence Index(JAII).For example,WJG has a 2022 JAII of 22.048,ranking 18th out of 102 journals in the field of gastroenterology&hepatology in the RCA,with 469909 total citations(6/102)and 21313 total articles(5/102).The numbers of manuscripts received and published in 2021 were both higher than those in 2019-2020.For example,WJCC received a total of 3650 manuscripts in 2021,which is 91.1%higher than those in 2019-2020(average:1910 papers/year).In 2021,WJCC published 1296 articles,representing an increase of 105.1%compared to those in 2019-2020(average:632 articles/year).The numbers of webpage visits and downloads received by the seven journals have increased year by year.For example,the number of total visits received by WJG in 2019-2021 was 1974052 in 2019,2317835 in 2020(increased by 17.4%compared with that in 2019),and 2652555 in 2021(increased by 4.4%compared with that in 2020).The visitors were from more than 220 countries and regions worldwide,such as the United States,China,and the United Kingdom.Open access(OA)plays a vital role in improving the quality,efficiency,transparency,and integrity of academic journal publishing.From 2019 to 2021,a total of 5543 OA articles were published in the seven journals,of which 2083(37.6%)were invited and published free-of-charge.During the same period,1683 articles were published in WJG,and the authors were from more than 70 countries and regions.For the total 5543 articles published in the seven journals from 2019 to 2021,3903 article quality tracking reports were received after the online publication of these articles.The quality of the articles was further evaluated through the Baishideng’s article quality and author evaluation tracking system,with 4655 articles(84.0%)having received author evaluation and feedback,which contributes to tracking metrics for authors’satisfaction with the collective publication processes.From March 25,2021 to June 28,2022,the seven journals received a total of 424 reader evaluations and 229 letters from readers;this subsequent reader engagement demonstrates that the popularity of the published articles and the volume of their readership audience were improved through the reader evaluation system.CONCLUSION Ultimately,the findings from our bibliometric assessments indicate that establishing,promoting and actively practicing processes that safeguard and bolster the integrity of the editing and publication process also help to improve the academic influence of academic journals,which itself is the cornerstone for improving JIF.展开更多
被引分析是最常见的科学计量学研究方法,主要用来证明作者或其成果在所属专业领域内的影响力。Publish or Perish是一种在线被引分析软件,依据Google Scholar数据库来查询作者或成果的被引次数,并提供相关的统计数据分析。文章主要介绍...被引分析是最常见的科学计量学研究方法,主要用来证明作者或其成果在所属专业领域内的影响力。Publish or Perish是一种在线被引分析软件,依据Google Scholar数据库来查询作者或成果的被引次数,并提供相关的统计数据分析。文章主要介绍了该工具的功能及使用方法,并结合实例探讨了其在外语教学研究中的应用。展开更多
With the increasing of complexity of complex mechatronic products, it is necessary to involve multidis- ciplinary design teams, thus, the traditional customer requirements modeling for a single discipline team becomes...With the increasing of complexity of complex mechatronic products, it is necessary to involve multidis- ciplinary design teams, thus, the traditional customer requirements modeling for a single discipline team becomes difficult to be applied in a multidisciplinary team and project since team members with various disciplinary backgrounds may have different interpretations of the customers' requirements. A new synthesized multidisci- plinary customer requirements modeling method is pro- vided for obtaining and describing the common understanding of customer requirements (CRs) and more importantly transferring them into a detailed and accurate product design specifications (PDS) to interact with dif- ferent team members effectively. A case study of designing a high speed train verifies the rationality and feasibility of the proposed multidisciplinary requirement modeling method for complex mechatronic product development. This proposed research offersthe instruction to realize the customer-driven personalized customization of complex mechatronic product.展开更多
Software product line engineering is a large scale development paradigm based on mass production. It consists in building a common platform from which a set of products can be derived. Under the constraints of continu...Software product line engineering is a large scale development paradigm based on mass production. It consists in building a common platform from which a set of products can be derived. Under the constraints of continuous evolution and costs optimization, the derivation process must be able to answer customers’ requirements and provide adequate products in a short time without defects. However, this purpose cannot be achieved if the customer must wait for the change is implemented in the common platform. In this paper, we describe our work which proposes a framework to manage derivation of adaptable products. An adaptable product is obtained by deriving the most similar product from the common platform and changing it to support the new requirements. The aim of the framework is to give quick response to the customers need while the new requirements are being implemented in the common platform. The framework includes tools for processing natural language requirements, computing the similarity between products on the basis of their requirements, and the product adaptation effort measuring.展开更多
A new web product data management architecture is presented. The three-tier web architecture and Simple Object Access Protocol (SOAP) are combined to build the web-based product data management (PDM) system which incl...A new web product data management architecture is presented. The three-tier web architecture and Simple Object Access Protocol (SOAP) are combined to build the web-based product data management (PDM) system which includes three tiers: the user services tier, the business services tier, and the data services tier. The client service component uses the server-side technology, and Extensible Markup Language (XML) web service which uses SOAP as the communication protocol is chosen as the business service component. To illustrate how to build a web-based PDM system using the proposed architecture, a case PDM system which included three logical tires was built. To use the security and central management features of the database, a stored procedure was recommended in the data services tier. The business object was implemented as an XML web service so that client could use standard internet protocols to communicate with the business object from any platform. In order to satisfy users using all sorts of browser, the server-side technology and Microsoft ASP.NET was used to create the dynamic user interface.展开更多
The study, conducted in the academic year 2008, explores the potential differences in the use of a dictionary in support of a standard writing task by two student groups at two different proficiency levels. Fifty seve...The study, conducted in the academic year 2008, explores the potential differences in the use of a dictionary in support of a standard writing task by two student groups at two different proficiency levels. Fifty seven students working on a real classroom assignment were observed; in order to make sure that the subjects behaved as they normally would, they had not been informed that their dictionary behavior was to be observed. The study which shows that the need for a dictionary is smaller in the case of more advanced students may be of interest to those foreign language teachers who fear that giving a student an unlimited access to a dictionary may hamper the development of his expressive abilities. In turn, a marked preference on the part of more advanced students for an L I-L2, paralleled by a sustained interest in information categories typically placed in foreign learner's dictionaries suggests that advanced language learners writing in English would probably opt for a lexicographic product combining the best of both dictionary types: an LI-L2 and an MLD.展开更多
In this paper, we identify a set of factors that may be used to forecast software productivity and software development time. Software productivity was measured in function points per person hours, and software develo...In this paper, we identify a set of factors that may be used to forecast software productivity and software development time. Software productivity was measured in function points per person hours, and software development time was measured in number of elapsed days. Using field data on over 130 field software projects from various industries, we empirically test the impact of team size, integrated computer aided software engineering (ICASE) tools, software development type, software development platform, and programming language type on the software development productivity and development time. Our results indicate that team size, software development type, software development platform, and programming language type significantly impact software development productivity. However, only team size significantly impacts software development time. Our results indicate that effective management of software development teams, and using different management strategies for different software development type environments may improve software development productivity.展开更多
The teaching of grammar has received increasing attention in recent language teaching and learning literature. The major argument lies in teaching grammar as product or as process. Teaching grammar as product focuses ...The teaching of grammar has received increasing attention in recent language teaching and learning literature. The major argument lies in teaching grammar as product or as process. Teaching grammar as product focuses on giving learners a clear and explicit framework about the language; while teaching grammar as a process emphasizes the use of language by the learner. This paper gives a brief introduction of teaching grammar as product and as process and points out that language teachers can choose the more appropriate approach of them in the specific context.展开更多
文摘ChatGPT and similar large language models(LLMs)have rapidly caught the sci-entific and popular imagination,inviting reflections on their potential and risk for science(Grimaldi&Ehrler,2023;Nature,2023;Thorp,2023;van Dis et al.,2023).
文摘Vocabulary is the basic element of a language,and the core part of language learning.English vocabulary can be divid ed into receptive vocabulary and productive vocabulary.Language learners often focus on the former,but ignore the latter.How ever,productive vocabulary plays an important role in language learning.This article makes an in-depth analysis for the relation ship between them then gives some suggestions to language learners who are learning vocabulary.
文摘The history of language study shows widely different attitudes concerning the relationship between spoken and written language. After a person's born,he or she learns spoken language before learning written language; therefore,many linguists consider written language a written form of spoken language,the function of which is to record the human sounds. Meanwhile,for centuries,the written language held a preeminent place. It was the medium of literature,which was felt to provide language with permanence and authority (David Crystal,2002). Therefore,what are the general differences between spoken and written language to make them present totally different functions? Accordingly,this essay will compare spoken language and written language to identify their general differences in three aspects.
文摘Second language acquisition can not be understood without addressing the interaction between language and cognition. Cognitive theory can extend to describe learning strategies as complex cognitive skills. Theoretical developments in Anderson’s production systems cover a broader range of behavior than other theories, including comprehension and production of oral and written texts as well as comprehension, problem solving, and verbal learning.Thus Anderson’s cognitive theory can be served as a rationale for learning strategy studies in second language acquisition.
基金This work was co-funded by the European Research Council for the project ScienceGRAPH(Grant agreement ID:819536)by the TIB Leibniz Information Centre for Science and Technology.
文摘Purpose:This work aims to normalize the NLPCONTRIBUTIONS scheme(henceforward,NLPCONTRIBUTIONGRAPH)to structure,directly from article sentences,the contributions information in Natural Language Processing(NLP)scholarly articles via a two-stage annotation methodology:1)pilot stage-to define the scheme(described in prior work);and 2)adjudication stage-to normalize the graphing model(the focus of this paper).Design/methodology/approach:We re-annotate,a second time,the contributions-pertinent information across 50 prior-annotated NLP scholarly articles in terms of a data pipeline comprising:contribution-centered sentences,phrases,and triple statements.To this end,specifically,care was taken in the adjudication annotation stage to reduce annotation noise while formulating the guidelines for our proposed novel NLP contributions structuring and graphing scheme.Findings:The application of NLPCONTRIBUTIONGRAPH on the 50 articles resulted finally in a dataset of 900 contribution-focused sentences,4,702 contribution-information-centered phrases,and 2,980 surface-structured triples.The intra-annotation agreement between the first and second stages,in terms of F1-score,was 67.92%for sentences,41.82%for phrases,and 22.31%for triple statements indicating that with increased granularity of the information,the annotation decision variance is greater.Research limitations:NLPCONTRIBUTIONGRAPH has limited scope for structuring scholarly contributions compared with STEM(Science,Technology,Engineering,and Medicine)scholarly knowledge at large.Further,the annotation scheme in this work is designed by only an intra-annotator consensus-a single annotator first annotated the data to propose the initial scheme,following which,the same annotator reannotated the data to normalize the annotations in an adjudication stage.However,the expected goal of this work is to achieve a standardized retrospective model of capturing NLP contributions from scholarly articles.This would entail a larger initiative of enlisting multiple annotators to accommodate different worldviews into a“single”set of structures and relationships as the final scheme.Given that the initial scheme is first proposed and the complexity of the annotation task in the realistic timeframe,our intraannotation procedure is well-suited.Nevertheless,the model proposed in this work is presently limited since it does not incorporate multiple annotator worldviews.This is planned as future work to produce a robust model.Practical implications:We demonstrate NLPCONTRIBUTIONGRAPH data integrated into the Open Research Knowledge Graph(ORKG),a next-generation KG-based digital library with intelligent computations enabled over structured scholarly knowledge,as a viable aid to assist researchers in their day-to-day tasks.Originality/value:NLPCONTRIBUTIONGRAPH is a novel scheme to annotate research contributions from NLP articles and integrate them in a knowledge graph,which to the best of our knowledge does not exist in the community.Furthermore,our quantitative evaluations over the two-stage annotation tasks offer insights into task difficulty.
文摘BACKGROUND Journal Impact Factor™(JIF)is often used to evaluate the relative reputation and quality of academic journals in their respective fields,and can greatly influence the quality and scope of subsequent manuscript submissions.Therefore,many if not all academic journals are interested in increasing their JIF,to improve their academic impact.AIM To determine the importance of the integrity of the editorial and publication process in improving the academic influence of academic journals and the JIF of academic journals.METHODS In this paper,we describe our statistical analysis of bibliometric factors-including the 2021 JIFs released in the Journal Citation Report™2022,discipline rankings,received and published articles in 2019-2021,and webpage visits and downloads-for seven journals published by Baishideng Publishing Group(Baishideng)and indexed in Science Citation Index Expanded™;ultimately,we introduce and discuss the editing and publishing processes of Baishideng’s journals in their entirety,as they form the basis for our objective of safeguarding and bolstering integrity in academic publication.RESULTS For the seven journals assessed,their 2021 JIFs were basically unchanged from 2020,with the current metric ranging from 5.374 for World Journal of Gastroenterology(WJG)to 1.534 for World Journal of Clinical Cases(WJCC).Further assessments of the journals’bibliometrics from 2019 to 2020,showed that World Journal of Stem Cells has the highest self-citation rate(1.43%)and World Journal of Gastrointestinal Surgery has the lowest(0.21%).Additionally,the total 3012 articles published during this period were cited by more than 20000 articles in approximately 8000 academic journals.Of note,the 1102 articles published in WJG were cited by articles in 3059 journals,among which 171 journals have a JIF of>10,including internationally renowned academic journals such as CA-A Cancer Journal for Clinicians(2021 JIF 286.130,record count:1),Lancet(2021 JIF 202.731,record count:4),Nature Reviews Immunology(2021 JIF 108.555,record count:2),Nature Reviews Gastroenterology&Hepatology(2021 JIF 73.082,record count:9),Lancet Gastroenterology&Hepatology(2021 JIF 45.042,record count:8),Gastroenterology(2021 JIF 33.883,record count:19),and Gut(2021 JIF 31.793,record count:21).This suggests that Baishideng’s journals have been widely recognized for their academic quality.In the Reference Citation Analysis(RCA)database,all seven Baishidengpublished journals obtained a 2022 Journal Article Influence Index(JAII).For example,WJG has a 2022 JAII of 22.048,ranking 18th out of 102 journals in the field of gastroenterology&hepatology in the RCA,with 469909 total citations(6/102)and 21313 total articles(5/102).The numbers of manuscripts received and published in 2021 were both higher than those in 2019-2020.For example,WJCC received a total of 3650 manuscripts in 2021,which is 91.1%higher than those in 2019-2020(average:1910 papers/year).In 2021,WJCC published 1296 articles,representing an increase of 105.1%compared to those in 2019-2020(average:632 articles/year).The numbers of webpage visits and downloads received by the seven journals have increased year by year.For example,the number of total visits received by WJG in 2019-2021 was 1974052 in 2019,2317835 in 2020(increased by 17.4%compared with that in 2019),and 2652555 in 2021(increased by 4.4%compared with that in 2020).The visitors were from more than 220 countries and regions worldwide,such as the United States,China,and the United Kingdom.Open access(OA)plays a vital role in improving the quality,efficiency,transparency,and integrity of academic journal publishing.From 2019 to 2021,a total of 5543 OA articles were published in the seven journals,of which 2083(37.6%)were invited and published free-of-charge.During the same period,1683 articles were published in WJG,and the authors were from more than 70 countries and regions.For the total 5543 articles published in the seven journals from 2019 to 2021,3903 article quality tracking reports were received after the online publication of these articles.The quality of the articles was further evaluated through the Baishideng’s article quality and author evaluation tracking system,with 4655 articles(84.0%)having received author evaluation and feedback,which contributes to tracking metrics for authors’satisfaction with the collective publication processes.From March 25,2021 to June 28,2022,the seven journals received a total of 424 reader evaluations and 229 letters from readers;this subsequent reader engagement demonstrates that the popularity of the published articles and the volume of their readership audience were improved through the reader evaluation system.CONCLUSION Ultimately,the findings from our bibliometric assessments indicate that establishing,promoting and actively practicing processes that safeguard and bolster the integrity of the editing and publication process also help to improve the academic influence of academic journals,which itself is the cornerstone for improving JIF.
文摘被引分析是最常见的科学计量学研究方法,主要用来证明作者或其成果在所属专业领域内的影响力。Publish or Perish是一种在线被引分析软件,依据Google Scholar数据库来查询作者或成果的被引次数,并提供相关的统计数据分析。文章主要介绍了该工具的功能及使用方法,并结合实例探讨了其在外语教学研究中的应用。
基金Supported by Open Outreach Project of A New Biomimicry and Crowdsourcing Based Digital Design Platform for High Speed Train from State Key Laboratory of Traction PowerNational Natural Science Foundation of China(Grant No.51575461)
文摘With the increasing of complexity of complex mechatronic products, it is necessary to involve multidis- ciplinary design teams, thus, the traditional customer requirements modeling for a single discipline team becomes difficult to be applied in a multidisciplinary team and project since team members with various disciplinary backgrounds may have different interpretations of the customers' requirements. A new synthesized multidisci- plinary customer requirements modeling method is pro- vided for obtaining and describing the common understanding of customer requirements (CRs) and more importantly transferring them into a detailed and accurate product design specifications (PDS) to interact with dif- ferent team members effectively. A case study of designing a high speed train verifies the rationality and feasibility of the proposed multidisciplinary requirement modeling method for complex mechatronic product development. This proposed research offersthe instruction to realize the customer-driven personalized customization of complex mechatronic product.
文摘Software product line engineering is a large scale development paradigm based on mass production. It consists in building a common platform from which a set of products can be derived. Under the constraints of continuous evolution and costs optimization, the derivation process must be able to answer customers’ requirements and provide adequate products in a short time without defects. However, this purpose cannot be achieved if the customer must wait for the change is implemented in the common platform. In this paper, we describe our work which proposes a framework to manage derivation of adaptable products. An adaptable product is obtained by deriving the most similar product from the common platform and changing it to support the new requirements. The aim of the framework is to give quick response to the customers need while the new requirements are being implemented in the common platform. The framework includes tools for processing natural language requirements, computing the similarity between products on the basis of their requirements, and the product adaptation effort measuring.
基金the National Key Project Foundation of China (No. 2001BA201A0605) and partially supported by the State Key Lab for Mechanical Transmission..
文摘A new web product data management architecture is presented. The three-tier web architecture and Simple Object Access Protocol (SOAP) are combined to build the web-based product data management (PDM) system which includes three tiers: the user services tier, the business services tier, and the data services tier. The client service component uses the server-side technology, and Extensible Markup Language (XML) web service which uses SOAP as the communication protocol is chosen as the business service component. To illustrate how to build a web-based PDM system using the proposed architecture, a case PDM system which included three logical tires was built. To use the security and central management features of the database, a stored procedure was recommended in the data services tier. The business object was implemented as an XML web service so that client could use standard internet protocols to communicate with the business object from any platform. In order to satisfy users using all sorts of browser, the server-side technology and Microsoft ASP.NET was used to create the dynamic user interface.
文摘The study, conducted in the academic year 2008, explores the potential differences in the use of a dictionary in support of a standard writing task by two student groups at two different proficiency levels. Fifty seven students working on a real classroom assignment were observed; in order to make sure that the subjects behaved as they normally would, they had not been informed that their dictionary behavior was to be observed. The study which shows that the need for a dictionary is smaller in the case of more advanced students may be of interest to those foreign language teachers who fear that giving a student an unlimited access to a dictionary may hamper the development of his expressive abilities. In turn, a marked preference on the part of more advanced students for an L I-L2, paralleled by a sustained interest in information categories typically placed in foreign learner's dictionaries suggests that advanced language learners writing in English would probably opt for a lexicographic product combining the best of both dictionary types: an LI-L2 and an MLD.
文摘In this paper, we identify a set of factors that may be used to forecast software productivity and software development time. Software productivity was measured in function points per person hours, and software development time was measured in number of elapsed days. Using field data on over 130 field software projects from various industries, we empirically test the impact of team size, integrated computer aided software engineering (ICASE) tools, software development type, software development platform, and programming language type on the software development productivity and development time. Our results indicate that team size, software development type, software development platform, and programming language type significantly impact software development productivity. However, only team size significantly impacts software development time. Our results indicate that effective management of software development teams, and using different management strategies for different software development type environments may improve software development productivity.
文摘The teaching of grammar has received increasing attention in recent language teaching and learning literature. The major argument lies in teaching grammar as product or as process. Teaching grammar as product focuses on giving learners a clear and explicit framework about the language; while teaching grammar as a process emphasizes the use of language by the learner. This paper gives a brief introduction of teaching grammar as product and as process and points out that language teachers can choose the more appropriate approach of them in the specific context.