The representation and acquisition of a product gene is a crucial problem in product evolutionary design.A new methodology of product gene representation and acquisition from a population of product cases is proposed,...The representation and acquisition of a product gene is a crucial problem in product evolutionary design.A new methodology of product gene representation and acquisition from a population of product cases is proposed,and the methodology for product evolutionary design based on a population of product cases is realized.By properly classifying product cases according to its product species,the populations of product cases are divided and a model is established.Knowledge of the scheme design is extracted and formulated as the function base,principle base,and structure base,which are then combined to form a product gene.Subsequently,the product gene tree is created and represented by object-oriented method.Then combining this method with the evolutionary reasoning technology,an intelligent and automatic evolutionary scheme design of product based on the population of product cases is realized.This design method will be helpful in the processing of knowledge formulation,accumulation,and reuse,and in addressing the difficulty of acquiring design knowledge in traditional design.In addition,the disadvantages of manual case adaptation and update in case-based reasoning can be eliminated.Moreover,by optimizing the design scheme in multiple levels and aspects of product function,principle,and structure etc.,the level of creativity in the scheme design can be improved.展开更多
Conducting scientific drilling on subglacial lakes and obtaining samples of subglacial lake water holds great significance in unraveling the formation and evolution of Antarctic subglacial lakes and early Earth's ...Conducting scientific drilling on subglacial lakes and obtaining samples of subglacial lake water holds great significance in unraveling the formation and evolution of Antarctic subglacial lakes and early Earth's life forms.Despite various approaches to access and directly sample subglacial water and sediments,clean access and exploration of subglacial lakes remain challenging.To address this concern,Jilin University has developed the RECoverable Autonomous Sonde(RECAS)prototype.This technology enables sampling and in-situ detection of subglacial lake water while being isolated from the surface,thus minimizing the risk of pollution.Laboratory tests,including downward and upward drilling,long-running,remote-control,and cold-environment assessments,were conducted to validate the sonde's principle and functionality.During the 38th Chinese National Antarctic Research Expedition,CHINARE(2021–2022 season),the RECAS prototype underwent testing on the flank region of Dalk glacier,10 km from Zhongshan Station in Antarctica.Three boreholes with depths of 200.3,183.2,and 133.5 m were successfully drilled,with the refrozen meltwater sealing the boreholes during the process.Approximately 600 mL of melted water samples were collected from each hole.Throughout the drilling tests,all systems of the RECAS prototype performed within the expected ranges.展开更多
文摘The representation and acquisition of a product gene is a crucial problem in product evolutionary design.A new methodology of product gene representation and acquisition from a population of product cases is proposed,and the methodology for product evolutionary design based on a population of product cases is realized.By properly classifying product cases according to its product species,the populations of product cases are divided and a model is established.Knowledge of the scheme design is extracted and formulated as the function base,principle base,and structure base,which are then combined to form a product gene.Subsequently,the product gene tree is created and represented by object-oriented method.Then combining this method with the evolutionary reasoning technology,an intelligent and automatic evolutionary scheme design of product based on the population of product cases is realized.This design method will be helpful in the processing of knowledge formulation,accumulation,and reuse,and in addressing the difficulty of acquiring design knowledge in traditional design.In addition,the disadvantages of manual case adaptation and update in case-based reasoning can be eliminated.Moreover,by optimizing the design scheme in multiple levels and aspects of product function,principle,and structure etc.,the level of creativity in the scheme design can be improved.
基金supported by the National Key Research and Development Project of the Ministry of Science and Technology of China(Grant Nos.2016YFC1400302,2023YFC2812602)the National Natural Science Foundation of China(Grant No.41941005)。
文摘Conducting scientific drilling on subglacial lakes and obtaining samples of subglacial lake water holds great significance in unraveling the formation and evolution of Antarctic subglacial lakes and early Earth's life forms.Despite various approaches to access and directly sample subglacial water and sediments,clean access and exploration of subglacial lakes remain challenging.To address this concern,Jilin University has developed the RECoverable Autonomous Sonde(RECAS)prototype.This technology enables sampling and in-situ detection of subglacial lake water while being isolated from the surface,thus minimizing the risk of pollution.Laboratory tests,including downward and upward drilling,long-running,remote-control,and cold-environment assessments,were conducted to validate the sonde's principle and functionality.During the 38th Chinese National Antarctic Research Expedition,CHINARE(2021–2022 season),the RECAS prototype underwent testing on the flank region of Dalk glacier,10 km from Zhongshan Station in Antarctica.Three boreholes with depths of 200.3,183.2,and 133.5 m were successfully drilled,with the refrozen meltwater sealing the boreholes during the process.Approximately 600 mL of melted water samples were collected from each hole.Throughout the drilling tests,all systems of the RECAS prototype performed within the expected ranges.
