Leveraging the Baidu Qianfan model platform,this paper designs and implements a highly efficient and accurate scoring system for subjective questions,focusing primarily on questions in the field of computer network te...Leveraging the Baidu Qianfan model platform,this paper designs and implements a highly efficient and accurate scoring system for subjective questions,focusing primarily on questions in the field of computer network technology.The system enhances the foundational model by utilizing Qianfan’s training tools and integrating advanced techniques,such as supervised fine-tuning.In the data preparation phase,a comprehensive collection of subjective data related to computer network technology is gathered,cleaned,and labeled.During model training and evaluation,optimal hyperparameters and tuning strategies are applied,resulting in a model capable of scoring with high accuracy.Evaluation results demonstrate that the proposed model performs well across multiple dimensions-content,expression,and development scores-yielding results comparable to those of manual scoring.展开更多
Pedagogical tradition regarding musical education in Russia is one of the country culture achievements.Arrangement of quality musical pedagogy has been a matter of special importance within half a century history ofmu...Pedagogical tradition regarding musical education in Russia is one of the country culture achievements.Arrangement of quality musical pedagogy has been a matter of special importance within half a century history ofmusic education system forming. Training of music teachers is particularly important in the field of music theory,as the comprehensive musician training is specific for Russian music education, where besides playing a musicinstrument he must possess knowledge from the music theory field, make sense of music pieces, and understandand analyze them. The conservatism in teaching traditions preservation began interfering with changing priorities ofeducation. As a result, stagnation in the field of musical pedagogy was outlined in the early XXI century. This hasaffected teaching music and theoretical subjects, which became heavy, boring, and unpopular due to conservatismin teaching methods and focus on students＇ motivation. As professional regards, there has been an imbalance in theability to play the instrument and the inability to navigate in the music literature. Implementation of innovativeapproaches to teaching issues and appropriate teachers training has become a necessary solution to the problem.The report considers innovations in teachers training traditions on example of the leading musical institutionMoscow Tchaikovsky Conservatory.展开更多
Objective:Trained immunity of natural killer(NK)cells has shown great potential in the treatment of cancers by eliciting enhanced effector responses to restimulation by cytokines or cancer cells for long time periods ...Objective:Trained immunity of natural killer(NK)cells has shown great potential in the treatment of cancers by eliciting enhanced effector responses to restimulation by cytokines or cancer cells for long time periods after preactivation.However,the human NK cells responsible for the generation and maintenance of trained immunity are largely unknown.We hypothesized that heterogeneous human NK cells would respond differentially to stimulation with a combination of IL-12,IL-15,and IL-18,and that an NK cell subset might exist that is mainly responsible for the induction of trained immunity.On the basis of our hypothesis,we aimed to identify the subset from which cytokine-trained human NK cells originate and to explore possible regulatory targets for drug intervention.Methods:Flow cytometry assays were performed to analyze the functions of cytokine-trained NK cells and examine cell division and protein expression in NK cell subsets.Single-cell RNA sequencing(scRNA-seq)plus TotalSeq™technology was used to track the heterogeneity of NK cells during the induction of trained immunity.Results:Traditional developmental markers for peripheral NK cells were unable to identify the precursors of human NK cells with trained immunity.Therefore,we used scRNA-seq plus TotalSeq™technology to track the heterogeneity of NK cells during the induction of trained immunity and identified a unique cluster of CD57−NKG2A+EZH2+IFNG+MKI67+IL12R+IL15R+IL18R+NK cells.Enrichment and pseudotime trajectory analyses suggested that this cluster of NK cells contained the precursor of trained NK cells.We then used flow cytometry to further investigate the role of EZH2 in trained NK precursors and found that CD57−NKG2A+EZH2+NK cells had faster cell cycles and an enhanced trained phenotype,and EZH2 inhibition significantly impaired the induction of trained immunity in NK cells.These results suggested that EZH2 is a unique epigenetic marker of precursors of human NK cells with trained immunity.Conclusions:Our work revealed human NK heterogeneity in the induction of trained immunity,identified the precursor subset for trained NK cells,and demonstrated the critical role of EZH2 in the induction of trained immunity in human NK cells.展开更多
Software cost estimation is a main concern of the software industry. However, the fact is also that in today’s scenario, software industries are more interested in other issues like new technologies in the market, sh...Software cost estimation is a main concern of the software industry. However, the fact is also that in today’s scenario, software industries are more interested in other issues like new technologies in the market, shorter development time, skill shortage etc. They are actually deviating from critical issues to routine issues. Today, people expect high quality products at very low costs and same is the goal of software engineering. An accuracy in software cost estimation has a direct impact on company’s reputation and also affects the software investment decisions. Accurate cost estimation can minimize the unnecessary costs and increase the productivity and efficiency of the company. The objective of this paper is to identify the existing methods of software cost estimation prevailing in the market and analyzing some of the important factors impacting the software cost estimation process. In order to achieve the objective, a survey was conducted to find out: ● Nature of projects that companies prefer. ● Impact of training on employees in software cost estimation. ● How many people review the estimated cost? ● How much risk buffer the company keeps for future prospects?展开更多
At the present time,new state compulsory standards for school education,standard curricula,and curricula have been developed.The programs of higher and postgraduate education do not take into account changes in educat...At the present time,new state compulsory standards for school education,standard curricula,and curricula have been developed.The programs of higher and postgraduate education do not take into account changes in educational curricula of secondary education.The future specialists of pedagogical universities are teachers of the school.Therefore,graduates of universities on pedagogical specialties,including scientific direction,should be profoundly aware of the content of subjects studied in secondary education.It is very important to understand the need to ensure the continuity of educational curricula of higher pedagogical and general secondary education in conditions of updating the content of education.The relevance of the research topic is due to the lack of continuity in the educational programs of higher pedagogical and general secondary education in conditions of updating the content of education;discrepancy of professional competences of young pedagogical staff,graduates of higher educational institutions,to the conditions of the updated content of school education;the lack of fundamental and applied research to date,considering the theoretical and methodological foundations for ensuring the continuity of natural science education in the“school-university”system in the context of updating the content of education;the need for the research in the context of the implementation of the State Program for the Development of Education of the Republic of Kazakhstan for 2016-2019,which indicates an increase in the prestige of the profession of teachers and an increase in their quality.These theoretical and methodological bases for ensuring the continuity of educational programs of higher pedagogical and secondary education in conditions of updating the content of education will make it possible to introduce changes in the educational curricula of higher and postgraduate education for the training of pedagogical personnel.展开更多
Physical education and training is considered as a new subject among the same type of discipline.It has a short history background and is relatively young.However,the influence of the discipline of physical education ...Physical education and training is considered as a new subject among the same type of discipline.It has a short history background and is relatively young.However,the influence of the discipline of physical education and training must not be ignored by simply blaming it as the youngest discipline.In addition,especially in the case of rapid economic development and rapid improvement in living standards today,the influence of this discipline is relatively strong.Therefore,this thesis mainly studies the subject nature and object of physical education training.The research object of this subject can be studied from three key points,such as:the curriculum of the subject,the research method and the research of the subject of education.The comprehensive development of physical education and physical education is a comprehensive discipline.展开更多
Intent detection and slot filling are two important components of natural language understanding.Because their relevance,joint training is often performed to improve performance.Existing studies mostly use a joint mod...Intent detection and slot filling are two important components of natural language understanding.Because their relevance,joint training is often performed to improve performance.Existing studies mostly use a joint model of multi-intent detection and slot-filling with unidirectional interaction,which improves the overall performance of the model by fusing the intent information in the slot-filling part.On this basis,in order to further improve the overall performance of the model by exploiting the correlation between the two,this paper proposes a joint multi-intent detection and slot-filling model based on a bidirectional interaction structure,which fuses the intent encoding information in the encoding part of slot filling and fuses the slot decoding information in the decoding part of intent detection.Experimental results on two public multi-intent joint training datasets,MixATIS and MixSNIPS,show that the bidirectional interaction structure proposed in this paper can effectively improve the performance of the joint model.In addition,in order to verify the generalization of the bidirectional interaction structure between intent and slot,a joint model for single-intent scenarios is proposed on the basis of the model in this paper.This model also achieves excellent performance on two public single-intent joint training datasets,CAIS and SNIPS.展开更多
A support vector rule based method is investigated for the construction of motion controllers via natural language training. It is a two-phase process including motion control information collection from natural langu...A support vector rule based method is investigated for the construction of motion controllers via natural language training. It is a two-phase process including motion control information collection from natural language instructions, and motion information condensation with the aid of support vector machine （SVM） theory. Self-organizing fuzzy neural networks are utilized for the collection of control rules, from which support vector rules are extracted to form a final controller to achieve any given control accuracy. In this way, the number of control rules is reduced, and the structure of the controller tidied, making a controller constructed using natural language training more appropriate in practice, and providing a fundamental rule base for high-level robot behavior control. Simulations and experiments on a wheeled robot are carried out to illustrate the effectiveness of the method.展开更多
The dynamic transmission characteristics and the sensitivities of the three stage idler gear system of the new NC power turret are studied in the paper. Considering the strongly nonlinear factors such as the periodica...The dynamic transmission characteristics and the sensitivities of the three stage idler gear system of the new NC power turret are studied in the paper. Considering the strongly nonlinear factors such as the periodically time-varying mesh stiffness, the nonlinear tooth backlash, the lump-parameter model of the gear system is developed with one rotational and two translational freedoms of each gear. The eigen-values and eigenvectors are derived and analyzed on the basis of the real modal theory. The sensitivities of natural frequencies to design parameters including supporting and meshing stiffnesses, gear masses, and moments of inertia by the direct differential method are also calculated. The results show the quantitative and qualitative impact of the parameters to the natural characteristics of the gear system. Furthermore, the periodic steady state solutions are obtained by the numerical approach based on the nonlinear model. These results are employed to gain insights into the primary controlling parameters, to forecast the severity of the dynamic response, and to assess the acceptability of the gear design.展开更多
The objective of this study is to investigate numerically the characteristics of train-induced unsteady airflow in a subway tunnel with natural ventilation ducts.A three-dimensional numerical model using the dynamic l...The objective of this study is to investigate numerically the characteristics of train-induced unsteady airflow in a subway tunnel with natural ventilation ducts.A three-dimensional numerical model using the dynamic layering method for the moving boundary of a train is first developed,and then it is validated against the model tunnel experimental data.With the tunnel and subway train geometries in the numerical model exactly the same as those in the model tunnel experimental test,but with the ventilation ducts being connected to the tunnel ceiling and a barrier placed at the tunnel outlet,the three-dimensional train-induced unsteady tunnel flows are numerically simulated.The computed distributions of the pressure and the air velocity in the tunnel as well as the time series of the mass flow rate at the ventilation ducts reveal the impact of the train motion on the exhaust and suction of the air through ventilation ducts and the effects of a barrier placed at the tunnel outlet on the duct ventilation performance.As the train approaches a ventilation duct,the air is pushed out of the tunnel through the duct.As the train passes the ventilation duct,the exhaust flow in the duct is changed rapidly to the suction flow.After the train passes the duct,the suction mass flow rate at the duct decreases with time since the air pressure at the opening of the duct is gradually recovered with time.A drastic change in the mass flow rate at a ventilation duct while a train passes the corresponding ventilation duct,causes a change in the exhaust mass flow rate at other ventilation ducts.Also,when a barrier is placed at the tunnel outlet,the air volume discharge rate at each ventilation duct is greatly increased,i.e.,the barrier placed at the tunnel outlet can improve remarkably the ventilation performance through each duct.展开更多
An unsteady three-dimensional analysis of the ventilation performance is carried out for different ventilation strategies to find out a ventilation method with a high performance in a subway tunnel.The natural ventila...An unsteady three-dimensional analysis of the ventilation performance is carried out for different ventilation strategies to find out a ventilation method with a high performance in a subway tunnel.The natural ventilation performance associated with a train-induced air flow in a subway tunnel is examined.The dynamic layering method is used to consider the moving boundary of a train in the current CFD method.The geometries of the modeled tunnel and the subway train are partially based on those of the Seoul subway.The effects of the structure of the ventilation duct and the geometry of the partitions on the ventilation performance are evaluated.The results show that the combined ventilation ducts （to be designed）,and the partitioning blocks installed along the middle of tunnel （already in existences） are helpful for air exchange.This study can provide some guidance for the design of ventilation ducts in a subway system.展开更多
文摘Leveraging the Baidu Qianfan model platform,this paper designs and implements a highly efficient and accurate scoring system for subjective questions,focusing primarily on questions in the field of computer network technology.The system enhances the foundational model by utilizing Qianfan’s training tools and integrating advanced techniques,such as supervised fine-tuning.In the data preparation phase,a comprehensive collection of subjective data related to computer network technology is gathered,cleaned,and labeled.During model training and evaluation,optimal hyperparameters and tuning strategies are applied,resulting in a model capable of scoring with high accuracy.Evaluation results demonstrate that the proposed model performs well across multiple dimensions-content,expression,and development scores-yielding results comparable to those of manual scoring.
文摘Pedagogical tradition regarding musical education in Russia is one of the country culture achievements.Arrangement of quality musical pedagogy has been a matter of special importance within half a century history ofmusic education system forming. Training of music teachers is particularly important in the field of music theory,as the comprehensive musician training is specific for Russian music education, where besides playing a musicinstrument he must possess knowledge from the music theory field, make sense of music pieces, and understandand analyze them. The conservatism in teaching traditions preservation began interfering with changing priorities ofeducation. As a result, stagnation in the field of musical pedagogy was outlined in the early XXI century. This hasaffected teaching music and theoretical subjects, which became heavy, boring, and unpopular due to conservatismin teaching methods and focus on students＇ motivation. As professional regards, there has been an imbalance in theability to play the instrument and the inability to navigate in the music literature. Implementation of innovativeapproaches to teaching issues and appropriate teachers training has become a necessary solution to the problem.The report considers innovations in teachers training traditions on example of the leading musical institutionMoscow Tchaikovsky Conservatory.
基金This work was supported by grants from The National Key R&D Program(Grant Nos.2018YFC1313400,2018YFC1313000,and 2018YFC1313002)The National Natural Science Foundation of China(Grant Nos.81872166,U20A20375,31600705,81974416,and 81702405)The Tianjin Natural Science Foundation(Grant No.17JCQNJC09000)。
文摘Objective:Trained immunity of natural killer(NK)cells has shown great potential in the treatment of cancers by eliciting enhanced effector responses to restimulation by cytokines or cancer cells for long time periods after preactivation.However,the human NK cells responsible for the generation and maintenance of trained immunity are largely unknown.We hypothesized that heterogeneous human NK cells would respond differentially to stimulation with a combination of IL-12,IL-15,and IL-18,and that an NK cell subset might exist that is mainly responsible for the induction of trained immunity.On the basis of our hypothesis,we aimed to identify the subset from which cytokine-trained human NK cells originate and to explore possible regulatory targets for drug intervention.Methods:Flow cytometry assays were performed to analyze the functions of cytokine-trained NK cells and examine cell division and protein expression in NK cell subsets.Single-cell RNA sequencing(scRNA-seq)plus TotalSeq™technology was used to track the heterogeneity of NK cells during the induction of trained immunity.Results:Traditional developmental markers for peripheral NK cells were unable to identify the precursors of human NK cells with trained immunity.Therefore,we used scRNA-seq plus TotalSeq™technology to track the heterogeneity of NK cells during the induction of trained immunity and identified a unique cluster of CD57−NKG2A+EZH2+IFNG+MKI67+IL12R+IL15R+IL18R+NK cells.Enrichment and pseudotime trajectory analyses suggested that this cluster of NK cells contained the precursor of trained NK cells.We then used flow cytometry to further investigate the role of EZH2 in trained NK precursors and found that CD57−NKG2A+EZH2+NK cells had faster cell cycles and an enhanced trained phenotype,and EZH2 inhibition significantly impaired the induction of trained immunity in NK cells.These results suggested that EZH2 is a unique epigenetic marker of precursors of human NK cells with trained immunity.Conclusions:Our work revealed human NK heterogeneity in the induction of trained immunity,identified the precursor subset for trained NK cells,and demonstrated the critical role of EZH2 in the induction of trained immunity in human NK cells.
文摘Software cost estimation is a main concern of the software industry. However, the fact is also that in today’s scenario, software industries are more interested in other issues like new technologies in the market, shorter development time, skill shortage etc. They are actually deviating from critical issues to routine issues. Today, people expect high quality products at very low costs and same is the goal of software engineering. An accuracy in software cost estimation has a direct impact on company’s reputation and also affects the software investment decisions. Accurate cost estimation can minimize the unnecessary costs and increase the productivity and efficiency of the company. The objective of this paper is to identify the existing methods of software cost estimation prevailing in the market and analyzing some of the important factors impacting the software cost estimation process. In order to achieve the objective, a survey was conducted to find out: ● Nature of projects that companies prefer. ● Impact of training on employees in software cost estimation. ● How many people review the estimated cost? ● How much risk buffer the company keeps for future prospects?
文摘At the present time,new state compulsory standards for school education,standard curricula,and curricula have been developed.The programs of higher and postgraduate education do not take into account changes in educational curricula of secondary education.The future specialists of pedagogical universities are teachers of the school.Therefore,graduates of universities on pedagogical specialties,including scientific direction,should be profoundly aware of the content of subjects studied in secondary education.It is very important to understand the need to ensure the continuity of educational curricula of higher pedagogical and general secondary education in conditions of updating the content of education.The relevance of the research topic is due to the lack of continuity in the educational programs of higher pedagogical and general secondary education in conditions of updating the content of education;discrepancy of professional competences of young pedagogical staff,graduates of higher educational institutions,to the conditions of the updated content of school education;the lack of fundamental and applied research to date,considering the theoretical and methodological foundations for ensuring the continuity of natural science education in the“school-university”system in the context of updating the content of education;the need for the research in the context of the implementation of the State Program for the Development of Education of the Republic of Kazakhstan for 2016-2019,which indicates an increase in the prestige of the profession of teachers and an increase in their quality.These theoretical and methodological bases for ensuring the continuity of educational programs of higher pedagogical and secondary education in conditions of updating the content of education will make it possible to introduce changes in the educational curricula of higher and postgraduate education for the training of pedagogical personnel.
基金Guangdong Provincial Education Department Youth Innovation Project(2018WQNCX193)Zhaoqing College-Weiyang Fitness College Students Off-Campus Practice Teaching Base(2018010702)Zhaoqing College Practice Teaching Reform Project(sjjx201807,zlgc201732)。
文摘Physical education and training is considered as a new subject among the same type of discipline.It has a short history background and is relatively young.However,the influence of the discipline of physical education and training must not be ignored by simply blaming it as the youngest discipline.In addition,especially in the case of rapid economic development and rapid improvement in living standards today,the influence of this discipline is relatively strong.Therefore,this thesis mainly studies the subject nature and object of physical education training.The research object of this subject can be studied from three key points,such as:the curriculum of the subject,the research method and the research of the subject of education.The comprehensive development of physical education and physical education is a comprehensive discipline.
基金Supported by the National Nature Science Foundation of China(62462037,62462036)Project for Academic and Technical Leader in Major Disciplines in Jiangxi Province(20232BCJ22013)+1 种基金Jiangxi Provincial Natural Science Foundation(20242BAB26017,20232BAB202010)Jiangxi Province Graduate Innovation Fund Project(YC2023-S320)。
文摘Intent detection and slot filling are two important components of natural language understanding.Because their relevance,joint training is often performed to improve performance.Existing studies mostly use a joint model of multi-intent detection and slot-filling with unidirectional interaction,which improves the overall performance of the model by fusing the intent information in the slot-filling part.On this basis,in order to further improve the overall performance of the model by exploiting the correlation between the two,this paper proposes a joint multi-intent detection and slot-filling model based on a bidirectional interaction structure,which fuses the intent encoding information in the encoding part of slot filling and fuses the slot decoding information in the decoding part of intent detection.Experimental results on two public multi-intent joint training datasets,MixATIS and MixSNIPS,show that the bidirectional interaction structure proposed in this paper can effectively improve the performance of the joint model.In addition,in order to verify the generalization of the bidirectional interaction structure between intent and slot,a joint model for single-intent scenarios is proposed on the basis of the model in this paper.This model also achieves excellent performance on two public single-intent joint training datasets,CAIS and SNIPS.
基金This work was partially supported by the Royal Society of UK and the National Natural Science Foundation of PRC (No. 60175028).
文摘A support vector rule based method is investigated for the construction of motion controllers via natural language training. It is a two-phase process including motion control information collection from natural language instructions, and motion information condensation with the aid of support vector machine （SVM） theory. Self-organizing fuzzy neural networks are utilized for the collection of control rules, from which support vector rules are extracted to form a final controller to achieve any given control accuracy. In this way, the number of control rules is reduced, and the structure of the controller tidied, making a controller constructed using natural language training more appropriate in practice, and providing a fundamental rule base for high-level robot behavior control. Simulations and experiments on a wheeled robot are carried out to illustrate the effectiveness of the method.
基金The China Major Scientific and Technological Programs(2009ZX04011-053)the China NSFC Fund(50975047)
文摘The dynamic transmission characteristics and the sensitivities of the three stage idler gear system of the new NC power turret are studied in the paper. Considering the strongly nonlinear factors such as the periodically time-varying mesh stiffness, the nonlinear tooth backlash, the lump-parameter model of the gear system is developed with one rotational and two translational freedoms of each gear. The eigen-values and eigenvectors are derived and analyzed on the basis of the real modal theory. The sensitivities of natural frequencies to design parameters including supporting and meshing stiffnesses, gear masses, and moments of inertia by the direct differential method are also calculated. The results show the quantitative and qualitative impact of the parameters to the natural characteristics of the gear system. Furthermore, the periodic steady state solutions are obtained by the numerical approach based on the nonlinear model. These results are employed to gain insights into the primary controlling parameters, to forecast the severity of the dynamic response, and to assess the acceptability of the gear design.
基金supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grant No. 2009-0063383)the Seoul R and BD program (Grant No. CS070160)the Leading Academic Discipline Project of Shanghai Municipal Education Commission (Grant No. J50502)
文摘The objective of this study is to investigate numerically the characteristics of train-induced unsteady airflow in a subway tunnel with natural ventilation ducts.A three-dimensional numerical model using the dynamic layering method for the moving boundary of a train is first developed,and then it is validated against the model tunnel experimental data.With the tunnel and subway train geometries in the numerical model exactly the same as those in the model tunnel experimental test,but with the ventilation ducts being connected to the tunnel ceiling and a barrier placed at the tunnel outlet,the three-dimensional train-induced unsteady tunnel flows are numerically simulated.The computed distributions of the pressure and the air velocity in the tunnel as well as the time series of the mass flow rate at the ventilation ducts reveal the impact of the train motion on the exhaust and suction of the air through ventilation ducts and the effects of a barrier placed at the tunnel outlet on the duct ventilation performance.As the train approaches a ventilation duct,the air is pushed out of the tunnel through the duct.As the train passes the ventilation duct,the exhaust flow in the duct is changed rapidly to the suction flow.After the train passes the duct,the suction mass flow rate at the duct decreases with time since the air pressure at the opening of the duct is gradually recovered with time.A drastic change in the mass flow rate at a ventilation duct while a train passes the corresponding ventilation duct,causes a change in the exhaust mass flow rate at other ventilation ducts.Also,when a barrier is placed at the tunnel outlet,the air volume discharge rate at each ventilation duct is greatly increased,i.e.,the barrier placed at the tunnel outlet can improve remarkably the ventilation performance through each duct.
文摘An unsteady three-dimensional analysis of the ventilation performance is carried out for different ventilation strategies to find out a ventilation method with a high performance in a subway tunnel.The natural ventilation performance associated with a train-induced air flow in a subway tunnel is examined.The dynamic layering method is used to consider the moving boundary of a train in the current CFD method.The geometries of the modeled tunnel and the subway train are partially based on those of the Seoul subway.The effects of the structure of the ventilation duct and the geometry of the partitions on the ventilation performance are evaluated.The results show that the combined ventilation ducts （to be designed）,and the partitioning blocks installed along the middle of tunnel （already in existences） are helpful for air exchange.This study can provide some guidance for the design of ventilation ducts in a subway system.
