With the help of Big Data and Citespace software, this research makes a statistical analysis of the journals anddissertations on College English teaching and learning materials collected by CNKI from 2011 to 2020. Thi...With the help of Big Data and Citespace software, this research makes a statistical analysis of the journals anddissertations on College English teaching and learning materials collected by CNKI from 2011 to 2020. This paper,based on the knowledge map drawn by the visualized analysis of literatures volume, authors, research institutions,and keywords clustering, analyzes the current research status and hotspots in the compilation of China’s CollegeEnglish textbooks.展开更多
Based on practice of the land consolidation planning in Changfeng County of Hefei City,taking full account of reality of land consolidation and its significance as livelihood project,we analyzed map compilation proced...Based on practice of the land consolidation planning in Changfeng County of Hefei City,taking full account of reality of land consolidation and its significance as livelihood project,we analyzed map compilation procedure.In combination with actual effect of land consolidation,we carried out consolidation assessment of same elements by overall planning method,and optimized the map compilation for county-level land consolidation planning.Results show that planning map of land consolidation potential is to be improved and legends should be merged.After consolidation of legends,it is convenient to apply in potential planning map and solve complicated problem of reading maps.展开更多
The available measurements of the geo-mechanical properties of rocks in Southern Ontario and the neighbouring regions (New York, Ohio, Michigan, Indiana, Illinois, Wisconsin, and Minnesota) are summarized and presente...The available measurements of the geo-mechanical properties of rocks in Southern Ontario and the neighbouring regions (New York, Ohio, Michigan, Indiana, Illinois, Wisconsin, and Minnesota) are summarized and presented. These measurements were compiled from available published data in the relevant literature and also from data that were collected from major underground projects in these regions. The compiled data are presented in three categories: measured in-situ stresses in different rock formations;calculated strength, stiffness and deformation including time-dependent deformation properties;and the measured dynamic properties of intact rock specimens from different rock formations in Southern Ontario and the neighbouring regions. The data presented in this paper can be used as a resource for preliminary evaluation of the geomechanical properties of the rocks in these regions. The presented geo-mechanical properties were generally obtained from in-situ measurements and from laboratory tests that were conducted on intact rock specimens from freshly excavated rock samples. Moreover, the time-dependent deformation properties of rocks in these regions were obtained from laboratory tests that were performed on intact rock specimens submerged in water. However, the influence of drilling fluids such as bentonite slurry and synthetic polymers solution, on the geo-mechanical properties of rocks is not evident and needs to be investigated.展开更多
Setting out from the shortfalls of present EST translation textbooks,i.e.,similar structure and lacking diversity,we survey teachers and students of EST translation,and find problems regarding example choosing and lac...Setting out from the shortfalls of present EST translation textbooks,i.e.,similar structure and lacking diversity,we survey teachers and students of EST translation,and find problems regarding example choosing and lack of emphasis on CAT technology.Based on translation theory and translation talent training theory,a new“projectized”approach to compiling EST translation textbooks is put forward,which advocates that translation textbooks construct an environment with an initiator,consignor,original writer,translator,user,and receiver.The approach is expected to promote the practical value of EST translation textbooks and empower them with the ability required by the translation industry.展开更多
As nanoscale processing becomes the mainstream in IC manufacturing,the crosstalk problem rises as a serious challenge,not only for energy-efficiency and performance but also for security requirements.In this paper,we ...As nanoscale processing becomes the mainstream in IC manufacturing,the crosstalk problem rises as a serious challenge,not only for energy-efficiency and performance but also for security requirements.In this paper,we propose a register reallocation algorithm called Nearby Access based Register Reallocation(NARR)to reduce the crosstalk between instruction buses.The method includes construction of the software Nearby Access Aware Interference Graph(NAIG),using data flow analysis at assembly level,and reallocation of the registers to the software.Experimental results show that the crosstalk could be dramatically minimized,especially for 4C crosstalk,with a reduction of 80.84%in average,and up to 99.99%at most.展开更多
The currently available compilation techniques are for general computing and are not optimized for physical layer computing in 5G micro base stations.In such cases,the foreseeable data sizes and small code size are ap...The currently available compilation techniques are for general computing and are not optimized for physical layer computing in 5G micro base stations.In such cases,the foreseeable data sizes and small code size are application specific opportunities for baseband algorithm optimizations.Therefore,the special attention can be paid,for example,the specific register allocation algorithm has not been studied so far.The compilation for kernel sub-routines of baseband in 5G micro base stations is our focusing point.For applications of known and fixed data size,we proposed a compilation scheme of parallel data accessing,while operands can be mainly allocated and stored in registers.Based on a small register group(48×32b),the target of our compilation scheme is the optimization of baseband algorithms based on 4×4 or smaller matrices,maximizing the utilization of register files,and eliminating the extra register data exchanging.Meanwhile,when data is allocated into register files,we used VLIW(Very Long Instruction Word)machine to hide the time of data accessing and minimize the cost of data accessing,thus the total execution time is minimum.Experiments indicate that for algorithms with small data size,the cost of data accessing and extra addressing can be minimized.展开更多
Mongolian Terms Commonly Used in Meteorological Services that was issued by the China Meteorological Administration is China s first traditional Mongolian standard in meteorological industry. In the process of formula...Mongolian Terms Commonly Used in Meteorological Services that was issued by the China Meteorological Administration is China s first traditional Mongolian standard in meteorological industry. In the process of formulation, the compilation unit fully complied with the principles of scientificity, practicability, universality and versatility, and used literal translation, free translation, and the combination of literal translation and free translation to translate and compile 71 mongolian terms commonly used in meteorological services. The standard fills the blank of standardization construction of basic traditional Mongolian language in the meteorological industry of China.展开更多
The compilation of serial maps of karst geology in China and Southeast Asia is a project under the 'One Belt One Road' geological survey plan granted by China Geological Survey. This paper summarized the resea...The compilation of serial maps of karst geology in China and Southeast Asia is a project under the 'One Belt One Road' geological survey plan granted by China Geological Survey. This paper summarized the research trend of geoscientific mapping in China and Southeast Asia and introduced the significance, contents, technical routes, operating methods and progress of the project. Through bilateral and multilateral cooperation, this project builded an international cooperation platform for mapping and completes the preliminary compilation of related karst geological maps in China and Southeast Asia, thus filling up the blank of karst geological maps in this region.展开更多
Based on updating of new generation weather radar software,compilation system of new generation weather radar case data could automatically back up data and compile radar case.Using C language and VC++6.0 development ...Based on updating of new generation weather radar software,compilation system of new generation weather radar case data could automatically back up data and compile radar case.Using C language and VC++6.0 development technology,the software realizes the automatic sorting and saving of radar base data,radar products and radar status information on different machines every day,and automatically creates various folders and files required for compiling data.By inputting the days,date,start and end times,renaming and compression of the base data,product data and status information could be automatically completed,to realize automation,batch,process and standardization of case data compilation.Since putting into the radar business,the operation has been stable and reliable.The working efficiency of business personnel has been improved,and a large number of manpower has been saved.It can be transplanted and popularized in other new generation weather radar stations.展开更多
With the promulgation of the“National Quality Standards for Undergraduate Teaching of Foreign Languages and Literatures in General Institutions of Higher Education”and“Teaching Guidelines”in 2018,the humanistic at...With the promulgation of the“National Quality Standards for Undergraduate Teaching of Foreign Languages and Literatures in General Institutions of Higher Education”and“Teaching Guidelines”in 2018,the humanistic attributes of English majors and the important position of literature in foreign language learning are emphasized.Nowadays,the English literature curriculum is facing the problems of marginalization,reduction of class hours,simplification of curriculum and so on.Then in the context of the new liberal arts,it provides a new way to break through the dilemma of the literature curriculum.The study has collected the use of teaching materials of British and American literature courses in some colleges and universities across the country.Based on the survey results,the compilation of teaching materials in the new era should consider how to adapt to students’deep learning,autonomous learning,cross learning and research-based learning to provide guidance and support.The diversity of learning requires us to break the monotony of textbook compilation,show diversity and complement each other.展开更多
The contents of"Ba-Shu History of Science and Technology"take up a single volume of A General History of Ba-Shu Culture.This paper attempts to explore compilation modes of the history of local science and te...The contents of"Ba-Shu History of Science and Technology"take up a single volume of A General History of Ba-Shu Culture.This paper attempts to explore compilation modes of the history of local science and technology by analyzing the compilation of"Shu History of Science and Technology".There are three approaches available,i.e.a general history-based approach,a discipline-based approach and an integrated approach,also known as a discipline-specific approach based on general history.This paper considers the integrated approach to be the most feasible as it elaborates Ba-Shu culture as a sub-culture of Chinese culture,the connotations of Ba-Shu achievements in science and technology,the special significance of the history of Ba-Shu science and technology,as well as the latest progress in studying the history of Ba-Shu science and technology.This paper also puts forward a possible choice to better approach the compilation of the history of local science and technology,reveals areas worth improving,and indicates a proper direction to move towards.展开更多
This article intends to demonstrate the principles for dictionary compilation.To summarize,general rules are to be followed.At the same time,this article probes into the differences of Chinese to Chinese dictionary,Ch...This article intends to demonstrate the principles for dictionary compilation.To summarize,general rules are to be followed.At the same time,this article probes into the differences of Chinese to Chinese dictionary,Chinese to foreign language dictionary,dictionaries for the preparation of certain exams,learner’s dictionaries for reviewing errors,dictionaries with multimedia and dictionaries built via the Internet..In all,one of the key factors for dictionary compilation is the professionalism of editors and writers.The training of the people involved is vital,which would contribute to setting up a better order of the market.Acknowledgements should also be given to achievements in dictionary compilation.Revisions and polishing are required to improve the dictionaries on the market that have already won the acclaim so as to put their influence to the best display.展开更多
The production of category books in medieval China was a continuous process that,despite frequent changes of ruling dynasties,did not experience significant transformation or interruption.In most cases,the category bo...The production of category books in medieval China was a continuous process that,despite frequent changes of ruling dynasties,did not experience significant transformation or interruption.In most cases,the category book compilers inherited work done by their fathers,brothers,or masters. ough largely derivative in content and style,there was innovation and development in the compilation of these category books.展开更多
This paper reviews the summary and analysis of special technical safety schemes for hazardous and ultrahazardous activities,supported by housing scaffolding,installation,and dismantling of outer wall attached tower cr...This paper reviews the summary and analysis of special technical safety schemes for hazardous and ultrahazardous activities,supported by housing scaffolding,installation,and dismantling of outer wall attached tower crane,deep foundation pit with supporting structure,municipal bridge box girder formwork support,as well as grooved Larsen steel sheet pile,which are commonly seen in recent years,so as to enhance the pertinence,rationality,and economy of the special program to strengthen safety.展开更多
The knitting industry CAD/CAM system's development needs a solution of computer representation of the designed objects.One of them is a transformation of knitting rows and stitches form knitting pattern and its au...The knitting industry CAD/CAM system's development needs a solution of computer representation of the designed objects.One of them is a transformation of knitting rows and stitches form knitting pattern and its automatic analysis is to control data from the knitting design data.A method of the pattern CAD system including the analyzing and the compiling of the pattern data was developed in this paper.By rasterizing the pattern map,the drafted pattern could be compiled into knitting row data and stitches.The storage format of knitting rows data and stitches data could be defined by analyzing the motion of computerized fiat knitting machine.By reassembling the control data,it could be analyzed into the execute data of the controller in computerized flat knitting machine.This method mainly focused on the weak areas of multi-needle-bed technology and fully-fashioned knitting technology in inland and could be applied to most of control systems in the master-slave mode.The knitting row data and pattern row data in a " *.ptn" format file were integrated.Giving a corresponding analytic calculation process of control data and realizing independent development of the upper machine and the lower machine,the final knitting control data not only have low computation and transmission cost but also have fast transfer speeds.展开更多
Comprehensive Mission Spectrum(CMS)of an aero-engine can reflect the usage characteristics of the engine.It can provide load input for engine life prediction and accelerated mission test.In this paper,a novel compilat...Comprehensive Mission Spectrum(CMS)of an aero-engine can reflect the usage characteristics of the engine.It can provide load input for engine life prediction and accelerated mission test.In this paper,a novel compilation method of CMS of aero-engine maneuvering load based on mission segment is proposed.Firstly,the use-related Typical Mission Segment(TMS)of maneuvering load is divided and identified according to spectral characteristics.Secondly,the mathematical model of different kinds of TMS are established based on stochastic process theory.Finally,the CMS of maneuvering load is compiled based on TMS.The proposed method can accurately quantify the compilation of CMS.The compiled CMS shows good agreement with the original load spectrum.According to damage consistency inspection,the compiled CMS is consistent with the damage caused by the original load spectrum in terms of low cycle fatigue.展开更多
Edge devices,due to their limited computational and storage resources,often require the use of compilers for program optimization.Therefore,ensuring the security and reliability of these compilers is of paramount impo...Edge devices,due to their limited computational and storage resources,often require the use of compilers for program optimization.Therefore,ensuring the security and reliability of these compilers is of paramount importance in the emerging field of edge AI.One widely used testing method for this purpose is fuzz testing,which detects bugs by inputting random test cases into the target program.However,this process consumes significant time and resources.To improve the efficiency of compiler fuzz testing,it is common practice to utilize test case prioritization techniques.Some researchers use machine learning to predict the code coverage of test cases,aiming to maximize the test capability for the target compiler by increasing the overall predicted coverage of the test cases.Nevertheless,these methods can only forecast the code coverage of the compiler at a specific optimization level,potentially missing many optimization-related bugs.In this paper,we introduce C-CORE(short for Clustering by Code Representation),the first framework to prioritize test cases according to their code representations,which are derived directly from the source codes.This approach avoids being limited to specific compiler states and extends to a broader range of compiler bugs.Specifically,we first train a scaled pre-trained programming language model to capture as many common features as possible from the test cases generated by a fuzzer.Using this pre-trained model,we then train two downstream models:one for predicting the likelihood of triggering a bug and another for identifying code representations associated with bugs.Subsequently,we cluster the test cases according to their code representations and select the highest-scoring test case from each cluster as the high-quality test case.This reduction in redundant testing cases leads to time savings.Comprehensive evaluation results reveal that code representations are better at distinguishing test capabilities,and C-CORE significantly enhances testing efficiency.Across four datasets,C-CORE increases the average of the percentage of faults detected(APFD)value by 0.16 to 0.31 and reduces test time by over 50% in 46% of cases.When compared to the best results from approaches using predicted code coverage,C-CORE improves the APFD value by 1.1% to 12.3% and achieves an overall time-saving of 159.1%.展开更多
As multi-planning system integration is an important approach to planning compilation and management in the new era, this paper sums up the essence of multi-planning system integration based on the analysis on the dif...As multi-planning system integration is an important approach to planning compilation and management in the new era, this paper sums up the essence of multi-planning system integration based on the analysis on the differences and similarities of various plans. In addition, it explores, from the perspective of planning compilation and implementation, a general multi-planning system integration means on the basis of spatial elements, authority management, and technical standards. It then summarizes the key outcome: one plan, database, coordination mechanism, and so on, discovering a new planning compilation and management approach for regional coordination, ecological coexistence, urban-rural interaction, and efficient resource utilization.展开更多
基金This research is based on the“Construction of Chinese Academic Translation Team Project”(ZP1823105)of the Characteristic Humanities and Social Science Discipline Construction in 2018,and“2019-2020 Postgraduate Teaching Book Project Translation and International Communication”,East China University of Science and Technology.
文摘With the help of Big Data and Citespace software, this research makes a statistical analysis of the journals anddissertations on College English teaching and learning materials collected by CNKI from 2011 to 2020. This paper,based on the knowledge map drawn by the visualized analysis of literatures volume, authors, research institutions,and keywords clustering, analyzes the current research status and hotspots in the compilation of China’s CollegeEnglish textbooks.
文摘Based on practice of the land consolidation planning in Changfeng County of Hefei City,taking full account of reality of land consolidation and its significance as livelihood project,we analyzed map compilation procedure.In combination with actual effect of land consolidation,we carried out consolidation assessment of same elements by overall planning method,and optimized the map compilation for county-level land consolidation planning.Results show that planning map of land consolidation potential is to be improved and legends should be merged.After consolidation of legends,it is convenient to apply in potential planning map and solve complicated problem of reading maps.
文摘The available measurements of the geo-mechanical properties of rocks in Southern Ontario and the neighbouring regions (New York, Ohio, Michigan, Indiana, Illinois, Wisconsin, and Minnesota) are summarized and presented. These measurements were compiled from available published data in the relevant literature and also from data that were collected from major underground projects in these regions. The compiled data are presented in three categories: measured in-situ stresses in different rock formations;calculated strength, stiffness and deformation including time-dependent deformation properties;and the measured dynamic properties of intact rock specimens from different rock formations in Southern Ontario and the neighbouring regions. The data presented in this paper can be used as a resource for preliminary evaluation of the geomechanical properties of the rocks in these regions. The presented geo-mechanical properties were generally obtained from in-situ measurements and from laboratory tests that were conducted on intact rock specimens from freshly excavated rock samples. Moreover, the time-dependent deformation properties of rocks in these regions were obtained from laboratory tests that were performed on intact rock specimens submerged in water. However, the influence of drilling fluids such as bentonite slurry and synthetic polymers solution, on the geo-mechanical properties of rocks is not evident and needs to be investigated.
基金2021 Undergraduate Innovation and Entrepreneurship Training Program(No.XJ2021294)First-Class Curriculum Construction Program of USST“English Interpreting Ability Training”(YLKC202204)The Eleventh China Foreign Language Education Fund Project“On the Blended Teaching Model of Interpretation Course With the Synergistic Development of Interpretation Ability and Critical Thinking Ability”(ZGWYJYJJ11A071).
文摘Setting out from the shortfalls of present EST translation textbooks,i.e.,similar structure and lacking diversity,we survey teachers and students of EST translation,and find problems regarding example choosing and lack of emphasis on CAT technology.Based on translation theory and translation talent training theory,a new“projectized”approach to compiling EST translation textbooks is put forward,which advocates that translation textbooks construct an environment with an initiator,consignor,original writer,translator,user,and receiver.The approach is expected to promote the practical value of EST translation textbooks and empower them with the ability required by the translation industry.
基金This work was supported by the General Project of Humanities and Social Sciences Research of the Ministry of Education(16YJA740039)the Foundation Project of Philosophy and Social Science of Hunan(17YBA115).
文摘As nanoscale processing becomes the mainstream in IC manufacturing,the crosstalk problem rises as a serious challenge,not only for energy-efficiency and performance but also for security requirements.In this paper,we propose a register reallocation algorithm called Nearby Access based Register Reallocation(NARR)to reduce the crosstalk between instruction buses.The method includes construction of the software Nearby Access Aware Interference Graph(NAIG),using data flow analysis at assembly level,and reallocation of the registers to the software.Experimental results show that the crosstalk could be dramatically minimized,especially for 4C crosstalk,with a reduction of 80.84%in average,and up to 99.99%at most.
基金supported by the research funding KYQD(ZR)1974 from Hainan University.
文摘The currently available compilation techniques are for general computing and are not optimized for physical layer computing in 5G micro base stations.In such cases,the foreseeable data sizes and small code size are application specific opportunities for baseband algorithm optimizations.Therefore,the special attention can be paid,for example,the specific register allocation algorithm has not been studied so far.The compilation for kernel sub-routines of baseband in 5G micro base stations is our focusing point.For applications of known and fixed data size,we proposed a compilation scheme of parallel data accessing,while operands can be mainly allocated and stored in registers.Based on a small register group(48×32b),the target of our compilation scheme is the optimization of baseband algorithms based on 4×4 or smaller matrices,maximizing the utilization of register files,and eliminating the extra register data exchanging.Meanwhile,when data is allocated into register files,we used VLIW(Very Long Instruction Word)machine to hide the time of data accessing and minimize the cost of data accessing,thus the total execution time is minimum.Experiments indicate that for algorithms with small data size,the cost of data accessing and extra addressing can be minimized.
文摘Mongolian Terms Commonly Used in Meteorological Services that was issued by the China Meteorological Administration is China s first traditional Mongolian standard in meteorological industry. In the process of formulation, the compilation unit fully complied with the principles of scientificity, practicability, universality and versatility, and used literal translation, free translation, and the combination of literal translation and free translation to translate and compile 71 mongolian terms commonly used in meteorological services. The standard fills the blank of standardization construction of basic traditional Mongolian language in the meteorological industry of China.
基金supported by Compilation of Karst Geological Series Maps of China and Southeast Asia of China Geological Survey (12120114006301)
文摘The compilation of serial maps of karst geology in China and Southeast Asia is a project under the 'One Belt One Road' geological survey plan granted by China Geological Survey. This paper summarized the research trend of geoscientific mapping in China and Southeast Asia and introduced the significance, contents, technical routes, operating methods and progress of the project. Through bilateral and multilateral cooperation, this project builded an international cooperation platform for mapping and completes the preliminary compilation of related karst geological maps in China and Southeast Asia, thus filling up the blank of karst geological maps in this region.
基金Supported by Scientific Research and Technology Development Project of Wuzhou Meteorological Bureau(WUQIKE2020001)。
文摘Based on updating of new generation weather radar software,compilation system of new generation weather radar case data could automatically back up data and compile radar case.Using C language and VC++6.0 development technology,the software realizes the automatic sorting and saving of radar base data,radar products and radar status information on different machines every day,and automatically creates various folders and files required for compiling data.By inputting the days,date,start and end times,renaming and compression of the base data,product data and status information could be automatically completed,to realize automation,batch,process and standardization of case data compilation.Since putting into the radar business,the operation has been stable and reliable.The working efficiency of business personnel has been improved,and a large number of manpower has been saved.It can be transplanted and popularized in other new generation weather radar stations.
文摘With the promulgation of the“National Quality Standards for Undergraduate Teaching of Foreign Languages and Literatures in General Institutions of Higher Education”and“Teaching Guidelines”in 2018,the humanistic attributes of English majors and the important position of literature in foreign language learning are emphasized.Nowadays,the English literature curriculum is facing the problems of marginalization,reduction of class hours,simplification of curriculum and so on.Then in the context of the new liberal arts,it provides a new way to break through the dilemma of the literature curriculum.The study has collected the use of teaching materials of British and American literature courses in some colleges and universities across the country.Based on the survey results,the compilation of teaching materials in the new era should consider how to adapt to students’deep learning,autonomous learning,cross learning and research-based learning to provide guidance and support.The diversity of learning requires us to break the monotony of textbook compilation,show diversity and complement each other.
文摘The contents of"Ba-Shu History of Science and Technology"take up a single volume of A General History of Ba-Shu Culture.This paper attempts to explore compilation modes of the history of local science and technology by analyzing the compilation of"Shu History of Science and Technology".There are three approaches available,i.e.a general history-based approach,a discipline-based approach and an integrated approach,also known as a discipline-specific approach based on general history.This paper considers the integrated approach to be the most feasible as it elaborates Ba-Shu culture as a sub-culture of Chinese culture,the connotations of Ba-Shu achievements in science and technology,the special significance of the history of Ba-Shu science and technology,as well as the latest progress in studying the history of Ba-Shu science and technology.This paper also puts forward a possible choice to better approach the compilation of the history of local science and technology,reveals areas worth improving,and indicates a proper direction to move towards.
文摘This article intends to demonstrate the principles for dictionary compilation.To summarize,general rules are to be followed.At the same time,this article probes into the differences of Chinese to Chinese dictionary,Chinese to foreign language dictionary,dictionaries for the preparation of certain exams,learner’s dictionaries for reviewing errors,dictionaries with multimedia and dictionaries built via the Internet..In all,one of the key factors for dictionary compilation is the professionalism of editors and writers.The training of the people involved is vital,which would contribute to setting up a better order of the market.Acknowledgements should also be given to achievements in dictionary compilation.Revisions and polishing are required to improve the dictionaries on the market that have already won the acclaim so as to put their influence to the best display.
基金The present paper is a preliminary result of the project Collation and Study on the Chinese Encyclopedic Work Dunhuang Scribal Edition of Antithetical Phrases[敦煌写本类书《语对》整理研究],a Guoxue project for young scholars supported by the 2018 Guizhou Provincial Philosophy and Social Sciences Program(Project No.18GZGX29).
文摘The production of category books in medieval China was a continuous process that,despite frequent changes of ruling dynasties,did not experience significant transformation or interruption.In most cases,the category book compilers inherited work done by their fathers,brothers,or masters. ough largely derivative in content and style,there was innovation and development in the compilation of these category books.
文摘This paper reviews the summary and analysis of special technical safety schemes for hazardous and ultrahazardous activities,supported by housing scaffolding,installation,and dismantling of outer wall attached tower crane,deep foundation pit with supporting structure,municipal bridge box girder formwork support,as well as grooved Larsen steel sheet pile,which are commonly seen in recent years,so as to enhance the pertinence,rationality,and economy of the special program to strengthen safety.
基金National Natureal Science Foundation of China(No.51305076)
文摘The knitting industry CAD/CAM system's development needs a solution of computer representation of the designed objects.One of them is a transformation of knitting rows and stitches form knitting pattern and its automatic analysis is to control data from the knitting design data.A method of the pattern CAD system including the analyzing and the compiling of the pattern data was developed in this paper.By rasterizing the pattern map,the drafted pattern could be compiled into knitting row data and stitches.The storage format of knitting rows data and stitches data could be defined by analyzing the motion of computerized fiat knitting machine.By reassembling the control data,it could be analyzed into the execute data of the controller in computerized flat knitting machine.This method mainly focused on the weak areas of multi-needle-bed technology and fully-fashioned knitting technology in inland and could be applied to most of control systems in the master-slave mode.The knitting row data and pattern row data in a " *.ptn" format file were integrated.Giving a corresponding analytic calculation process of control data and realizing independent development of the upper machine and the lower machine,the final knitting control data not only have low computation and transmission cost but also have fast transfer speeds.
基金Supports of this project provided by the National Science and Technology Major Project,China(J2019-IV-0017-0085)the Jiangsu Province Key Laboratory of Aerospace Power System,China(CEPE2020004)are gratefully acknowledged。
文摘Comprehensive Mission Spectrum(CMS)of an aero-engine can reflect the usage characteristics of the engine.It can provide load input for engine life prediction and accelerated mission test.In this paper,a novel compilation method of CMS of aero-engine maneuvering load based on mission segment is proposed.Firstly,the use-related Typical Mission Segment(TMS)of maneuvering load is divided and identified according to spectral characteristics.Secondly,the mathematical model of different kinds of TMS are established based on stochastic process theory.Finally,the CMS of maneuvering load is compiled based on TMS.The proposed method can accurately quantify the compilation of CMS.The compiled CMS shows good agreement with the original load spectrum.According to damage consistency inspection,the compiled CMS is consistent with the damage caused by the original load spectrum in terms of low cycle fatigue.
文摘Edge devices,due to their limited computational and storage resources,often require the use of compilers for program optimization.Therefore,ensuring the security and reliability of these compilers is of paramount importance in the emerging field of edge AI.One widely used testing method for this purpose is fuzz testing,which detects bugs by inputting random test cases into the target program.However,this process consumes significant time and resources.To improve the efficiency of compiler fuzz testing,it is common practice to utilize test case prioritization techniques.Some researchers use machine learning to predict the code coverage of test cases,aiming to maximize the test capability for the target compiler by increasing the overall predicted coverage of the test cases.Nevertheless,these methods can only forecast the code coverage of the compiler at a specific optimization level,potentially missing many optimization-related bugs.In this paper,we introduce C-CORE(short for Clustering by Code Representation),the first framework to prioritize test cases according to their code representations,which are derived directly from the source codes.This approach avoids being limited to specific compiler states and extends to a broader range of compiler bugs.Specifically,we first train a scaled pre-trained programming language model to capture as many common features as possible from the test cases generated by a fuzzer.Using this pre-trained model,we then train two downstream models:one for predicting the likelihood of triggering a bug and another for identifying code representations associated with bugs.Subsequently,we cluster the test cases according to their code representations and select the highest-scoring test case from each cluster as the high-quality test case.This reduction in redundant testing cases leads to time savings.Comprehensive evaluation results reveal that code representations are better at distinguishing test capabilities,and C-CORE significantly enhances testing efficiency.Across four datasets,C-CORE increases the average of the percentage of faults detected(APFD)value by 0.16 to 0.31 and reduces test time by over 50% in 46% of cases.When compared to the best results from approaches using predicted code coverage,C-CORE improves the APFD value by 1.1% to 12.3% and achieves an overall time-saving of 159.1%.
文摘As multi-planning system integration is an important approach to planning compilation and management in the new era, this paper sums up the essence of multi-planning system integration based on the analysis on the differences and similarities of various plans. In addition, it explores, from the perspective of planning compilation and implementation, a general multi-planning system integration means on the basis of spatial elements, authority management, and technical standards. It then summarizes the key outcome: one plan, database, coordination mechanism, and so on, discovering a new planning compilation and management approach for regional coordination, ecological coexistence, urban-rural interaction, and efficient resource utilization.
