For a perspective set that is derived by finite consequences with probabilities, this paper introduces the conception of basis that is proved and the uniqueness of basis over a perspective set holds. These give the ch...For a perspective set that is derived by finite consequences with probabilities, this paper introduces the conception of basis that is proved and the uniqueness of basis over a perspective set holds. These give the characteristic properties of perspective sets and finite consequences with probabilities. These properties are applied to the utility defined by the consequences.展开更多
China is in Africa in a vigorous way,and doing business in several countries like Sudan,Congo DRC,Angola,South Africa,and Nigeria.In the short term,the relationship may appear to be mutually beneficial.This paper seek...China is in Africa in a vigorous way,and doing business in several countries like Sudan,Congo DRC,Angola,South Africa,and Nigeria.In the short term,the relationship may appear to be mutually beneficial.This paper seeks to address the issue of Africa's perspectives on China-Africa Relations and the FOCAC and examine the concept of strategic partnerships,determine the state of China-Africa relations,examines FOCAC and draw conclusion as well as recommendation on possible ways and issues for future engageme...展开更多
Cultural identity is the identity or feeling of belonging to a group.Individual,relational and communal identity are the three components of the cultural identity.Chinese cultural identity is an example of communal id...Cultural identity is the identity or feeling of belonging to a group.Individual,relational and communal identity are the three components of the cultural identity.Chinese cultural identity is an example of communal identity.A positive national cultural identity enhances national prestige,increases global understanding,reveals a unique value proposition and develops a competitive advantage in the world.However,in the wave of globalization and contemporary Chinese social transformation,Chinese cultural identity encounters some challenges.Cultural identity becomes fuzzy.The present paper attempts to make some suggestions to the construction and representation of Chinese cultural identity from an intercultural perspective.To construct Chinese cultural identity,we should try to accommodate Chinese cultural inheritance with contemporary culture and modern society,enhance full development of cultural products,rebuild people’s self-esteem on cultural identity,and improve the government’s identity-constructing ability.As for the representation of Chinese cultural identity,promoting the Chinese language,making use of mass media,performing national cultural identity in sports,encouraging heritage tourism and drawing upon other countries’ experience would be essential.展开更多
Logicians have worked with so many different logical systems that it is not possible even to esti-mate the number. Of these, many are best seen as extensions of classical logic, including both thoseof interest to math...Logicians have worked with so many different logical systems that it is not possible even to esti-mate the number. Of these, many are best seen as extensions of classical logic, including both thoseof interest to mathematics and those of interest to philosophy and computer science. (Henceforth Iwill use the term "intelligent systems theory" for the common ground of philosophical logic and展开更多
Rheumatoid arthritis(RA)is a systemic,inflammatory autoimmune disease,which is still a significant unmet medical need despite significant therapeutic advances.The pathogenesis of RA involves many types of immune cells...Rheumatoid arthritis(RA)is a systemic,inflammatory autoimmune disease,which is still a significant unmet medical need despite significant therapeutic advances.The pathogenesis of RA involves many types of immune cells,such as T cells,B cells,macrophages and so on.It′s known that the synovial membrane contains two layers,the outer layer,or subintima and the inner layer,or intima.The intimal cells mainly include two types of cells,fibroblasts synoviocyte and macrophage-like synoviocyte.In the inflamed rheumatoid synovial tissues,there is a large number of macrophage-like synoviocytes.These cells can produce key pro-inflammatory cytokines,chemokines and growth factors and their signaling pathways,including nuclear factorκB,Janus kinase-signal transducer,are highly activated.It will trigger cartilage destruction and perpetuate inflammation.This review attempts to high-light some aberrations of macrophage in immunoreaction including the roles of genetic and environmental factors,cellular alterations,especially signaling pathways that are implicated in the pathogenesis of RA.展开更多
Nowadays,multilateral consultative mechanism is gradually becoming a mainstream approach in the contemporary international system.As one of the most important international collective player,the European Union(EU) has...Nowadays,multilateral consultative mechanism is gradually becoming a mainstream approach in the contemporary international system.As one of the most important international collective player,the European Union(EU) has been engaging in multilateral cooperation and consultation since its inception.It has also been promoting a plural world through advocacy and action.The EU and the Latin America/Caribbean(LAC) Countries summits are considered a stability mechanism for promoting bi-regional dialogues.Nevertheless,after 10 years of bi-regional strategic partnership construction,the EU and LAC relations are currently experiencing a difficult phase,suggesting it is time to reform.The purpose of this paper is to analyze the advantages as well as the challenges to EU-LAC relations from the perspective of bi-regional summits,and to assess the short-term trend of their relations in the near展开更多
The selective reduction of carbon dioxide(CO_(2))into high-value-added chemicals is one of the most effective means to solve the current energy and environmental problems,which could realize the utilization of CO_(2) ...The selective reduction of carbon dioxide(CO_(2))into high-value-added chemicals is one of the most effective means to solve the current energy and environmental problems,which could realize the utilization of CO_(2) and promote the balance of the carbon cycle.Formate is one of the most economical and practical products of all the electrochemical CO_(2) reduction products.Among the many metal-based electrocatalysts that can convert CO_(2) into formate,Sn-based catalysts have received a lot of attention because of their low-cost,non-toxic characteristics and high selectivity for formate.In this article,the most recent development of Sn-based electrocatalysts is comprehensively summarized by giving examples,which are mainly divided into monometallic Sn,alloyed Sn,Sn-based compounds and Sn composite catalysts.Finally,the current performance enhancement strategies and future directions of the field are summarized.展开更多
For language users,meaning is the central fact about language,and meaning emerges from a seamless union of wording and context.Functional Grammar attempts to face that uncomfortable fact head-on and to establish a uni...For language users,meaning is the central fact about language,and meaning emerges from a seamless union of wording and context.Functional Grammar attempts to face that uncomfortable fact head-on and to establish a unified model of language which in principle allows the links to be made within the same description.展开更多
Traditional orthogonal strapdown inertial navigation sys-tem （SINS） cannot achieve satisfactory self-alignment accuracy in the stationary base： taking more than 5 minutes and al the iner-tial sensors biases cannot ...Traditional orthogonal strapdown inertial navigation sys-tem （SINS） cannot achieve satisfactory self-alignment accuracy in the stationary base： taking more than 5 minutes and al the iner-tial sensors biases cannot get ful observability except the up-axis accelerometer. However, the ful skewed redundant SINS （RSINS） can not only enhance the reliability of the system, but also improve the accuracy of the system, such as the initial alignment. Firstly, the observability of the system state includes attitude errors and al the inertial sensors biases are analyzed with the global perspective method： any three gyroscopes and three accelerometers can be assembled into an independent subordinate SINS （sub-SINS）;the system state can be uniquely confirmed by the coupling connec-tions of al the sub-SINSs;the attitude errors and random constant biases of al the inertial sensors are observable. However, the ran-dom noises of the inertial sensors are not taken into account in the above analyzing process. Secondly, the ful-observable Kalman filter which can be applied to the actual RSINS containing random noises is established; the system state includes the position, ve-locity, attitude errors of al the sub-SINSs and the random constant biases of the redundant inertial sensors. At last, the initial self-alignment process of a typical four-redundancy ful skewed RSINS is simulated： the horizontal attitudes （pitch, rol ） errors and yaw error can be exactly evaluated within 80 s and 100 s respectively, while the random constant biases of gyroscopes and accelero-meters can be precisely evaluated within 120 s. For the ful skewed RSINS, the self-alignment accuracy is greatly improved, mean-while the self-alignment time is widely shortened.展开更多
Blended teaching is one of the essential teaching methods with the development of information technology.Constructing a learning effect evaluation model is helpful to improve students’academic performance and helps t...Blended teaching is one of the essential teaching methods with the development of information technology.Constructing a learning effect evaluation model is helpful to improve students’academic performance and helps teachers to better implement course teaching.However,a lack of evaluation models for the fusion of temporal and non-temporal behavioral data leads to an unsatisfactory evaluation effect.To meet the demand for predicting students’academic performance through learning behavior data,this study proposes a learning effect evaluation method that integrates expert perspective indicators to predict academic performance by constructing a dual-stream network that combines temporal behavior data and non-temporal behavior data in the learning process.In this paper,firstly,the Delphi method is used to analyze and process the course learning behavior data of students and establish an effective evaluation index system of learning behavior with universality;secondly,the Mann-Whitney U-test and the complex correlation analysis are used to analyze further and validate the evaluation indexes;and lastly,a dual-stream information fusion model,which combines temporal and non-temporal features,is established.The learning effect evaluation model is built,and the results of the mean absolute error(MAE)and root mean square error(RMSE)indexes are 4.16 and 5.29,respectively.This study indicates that combining expert perspectives for evaluation index selection and further fusing temporal and non-temporal behavioral features that for learning effect evaluation and prediction is rationality,accuracy,and effectiveness,which provides a powerful help for the practical application of learning effect evaluation and prediction.展开更多
As a new research field,multimodal discourse analysis is facing a lot of challenges.On the one hand,the status of multimodality in traditional linguistics is questioned.Many linguists argue that nonlinguistic signs su...As a new research field,multimodal discourse analysis is facing a lot of challenges.On the one hand,the status of multimodality in traditional linguistics is questioned.Many linguists argue that nonlinguistic signs such as gestures and visual images are out of the scope of linguistics.On the other hand,the theories and methods of multimodal discourse analysis are still at an early stage of development and have many limitations.Moreover,many researchers have misunderstandings of the field.In view of these,this article provides a brief explanation of the basic questions of multimodal discourse analysis,including why we analyze multimodal discourse,whether linguistic theories are applicable to nonlinguistic signs such as visual images and gesture,what is the scope of multimodal research,what are the main theories and methods,and what are the limitations and misunderstandings.It further points out that researchers need to have the awareness of making their research interdisciplinary,empirical,and application-oriented.It argues that multimodal research should be based on theoretical and methodological innovation,and should aim at solving real communication problems in the multimedia age.The accurate understanding of these questions is crucial for developing multimodal discourse analysis into a new discipline with strong theoretical and methodological support.展开更多
文摘For a perspective set that is derived by finite consequences with probabilities, this paper introduces the conception of basis that is proved and the uniqueness of basis over a perspective set holds. These give the characteristic properties of perspective sets and finite consequences with probabilities. These properties are applied to the utility defined by the consequences.
文摘China is in Africa in a vigorous way,and doing business in several countries like Sudan,Congo DRC,Angola,South Africa,and Nigeria.In the short term,the relationship may appear to be mutually beneficial.This paper seeks to address the issue of Africa's perspectives on China-Africa Relations and the FOCAC and examine the concept of strategic partnerships,determine the state of China-Africa relations,examines FOCAC and draw conclusion as well as recommendation on possible ways and issues for future engageme...
基金a periodical achievement of the projects:On the Communicative Competition of Chinese National Discourse and Its English Translations(Ministry of Education Youth Project of Humanities and Social Sciences,18YJC740137)On the Communicative Competition and English Translation Strategies of International Discourse(2019WP05)On College English Teachers’Roles in International Communication of Chinese Culture(2018180011)
文摘Cultural identity is the identity or feeling of belonging to a group.Individual,relational and communal identity are the three components of the cultural identity.Chinese cultural identity is an example of communal identity.A positive national cultural identity enhances national prestige,increases global understanding,reveals a unique value proposition and develops a competitive advantage in the world.However,in the wave of globalization and contemporary Chinese social transformation,Chinese cultural identity encounters some challenges.Cultural identity becomes fuzzy.The present paper attempts to make some suggestions to the construction and representation of Chinese cultural identity from an intercultural perspective.To construct Chinese cultural identity,we should try to accommodate Chinese cultural inheritance with contemporary culture and modern society,enhance full development of cultural products,rebuild people’s self-esteem on cultural identity,and improve the government’s identity-constructing ability.As for the representation of Chinese cultural identity,promoting the Chinese language,making use of mass media,performing national cultural identity in sports,encouraging heritage tourism and drawing upon other countries’ experience would be essential.
文摘Logicians have worked with so many different logical systems that it is not possible even to esti-mate the number. Of these, many are best seen as extensions of classical logic, including both thoseof interest to mathematics and those of interest to philosophy and computer science. (Henceforth Iwill use the term "intelligent systems theory" for the common ground of philosophical logic and
基金supported by National Natural Science Foundation of China(81330081,81473223 and 81673444)
文摘Rheumatoid arthritis(RA)is a systemic,inflammatory autoimmune disease,which is still a significant unmet medical need despite significant therapeutic advances.The pathogenesis of RA involves many types of immune cells,such as T cells,B cells,macrophages and so on.It′s known that the synovial membrane contains two layers,the outer layer,or subintima and the inner layer,or intima.The intimal cells mainly include two types of cells,fibroblasts synoviocyte and macrophage-like synoviocyte.In the inflamed rheumatoid synovial tissues,there is a large number of macrophage-like synoviocytes.These cells can produce key pro-inflammatory cytokines,chemokines and growth factors and their signaling pathways,including nuclear factorκB,Janus kinase-signal transducer,are highly activated.It will trigger cartilage destruction and perpetuate inflammation.This review attempts to high-light some aberrations of macrophage in immunoreaction including the roles of genetic and environmental factors,cellular alterations,especially signaling pathways that are implicated in the pathogenesis of RA.
文摘Nowadays,multilateral consultative mechanism is gradually becoming a mainstream approach in the contemporary international system.As one of the most important international collective player,the European Union(EU) has been engaging in multilateral cooperation and consultation since its inception.It has also been promoting a plural world through advocacy and action.The EU and the Latin America/Caribbean(LAC) Countries summits are considered a stability mechanism for promoting bi-regional dialogues.Nevertheless,after 10 years of bi-regional strategic partnership construction,the EU and LAC relations are currently experiencing a difficult phase,suggesting it is time to reform.The purpose of this paper is to analyze the advantages as well as the challenges to EU-LAC relations from the perspective of bi-regional summits,and to assess the short-term trend of their relations in the near
基金Project(52204378)supported by the National Natural Science Foundation of China。
文摘The selective reduction of carbon dioxide(CO_(2))into high-value-added chemicals is one of the most effective means to solve the current energy and environmental problems,which could realize the utilization of CO_(2) and promote the balance of the carbon cycle.Formate is one of the most economical and practical products of all the electrochemical CO_(2) reduction products.Among the many metal-based electrocatalysts that can convert CO_(2) into formate,Sn-based catalysts have received a lot of attention because of their low-cost,non-toxic characteristics and high selectivity for formate.In this article,the most recent development of Sn-based electrocatalysts is comprehensively summarized by giving examples,which are mainly divided into monometallic Sn,alloyed Sn,Sn-based compounds and Sn composite catalysts.Finally,the current performance enhancement strategies and future directions of the field are summarized.
文摘For language users,meaning is the central fact about language,and meaning emerges from a seamless union of wording and context.Functional Grammar attempts to face that uncomfortable fact head-on and to establish a unified model of language which in principle allows the links to be made within the same description.
基金supported by the National Defense PreResearch Foundation of China(51309030102)
文摘Traditional orthogonal strapdown inertial navigation sys-tem （SINS） cannot achieve satisfactory self-alignment accuracy in the stationary base： taking more than 5 minutes and al the iner-tial sensors biases cannot get ful observability except the up-axis accelerometer. However, the ful skewed redundant SINS （RSINS） can not only enhance the reliability of the system, but also improve the accuracy of the system, such as the initial alignment. Firstly, the observability of the system state includes attitude errors and al the inertial sensors biases are analyzed with the global perspective method： any three gyroscopes and three accelerometers can be assembled into an independent subordinate SINS （sub-SINS）;the system state can be uniquely confirmed by the coupling connec-tions of al the sub-SINSs;the attitude errors and random constant biases of al the inertial sensors are observable. However, the ran-dom noises of the inertial sensors are not taken into account in the above analyzing process. Secondly, the ful-observable Kalman filter which can be applied to the actual RSINS containing random noises is established; the system state includes the position, ve-locity, attitude errors of al the sub-SINSs and the random constant biases of the redundant inertial sensors. At last, the initial self-alignment process of a typical four-redundancy ful skewed RSINS is simulated： the horizontal attitudes （pitch, rol ） errors and yaw error can be exactly evaluated within 80 s and 100 s respectively, while the random constant biases of gyroscopes and accelero-meters can be precisely evaluated within 120 s. For the ful skewed RSINS, the self-alignment accuracy is greatly improved, mean-while the self-alignment time is widely shortened.
基金supported by the National Key R&D Program of China(2022YFB3203800)National Natural Science Foundation of China(62007026)+2 种基金National Young Talent Program,Shaanxi Young Top-notch Talent Program,Key Research and Development Program of Shaanxi(2022GY-313)Xi’an Science and Technology Project(23ZDCYJSGG0026-2023)the Fundamental Research Funds for Central Universities(ZYTS23192).
文摘Blended teaching is one of the essential teaching methods with the development of information technology.Constructing a learning effect evaluation model is helpful to improve students’academic performance and helps teachers to better implement course teaching.However,a lack of evaluation models for the fusion of temporal and non-temporal behavioral data leads to an unsatisfactory evaluation effect.To meet the demand for predicting students’academic performance through learning behavior data,this study proposes a learning effect evaluation method that integrates expert perspective indicators to predict academic performance by constructing a dual-stream network that combines temporal behavior data and non-temporal behavior data in the learning process.In this paper,firstly,the Delphi method is used to analyze and process the course learning behavior data of students and establish an effective evaluation index system of learning behavior with universality;secondly,the Mann-Whitney U-test and the complex correlation analysis are used to analyze further and validate the evaluation indexes;and lastly,a dual-stream information fusion model,which combines temporal and non-temporal features,is established.The learning effect evaluation model is built,and the results of the mean absolute error(MAE)and root mean square error(RMSE)indexes are 4.16 and 5.29,respectively.This study indicates that combining expert perspectives for evaluation index selection and further fusing temporal and non-temporal behavioral features that for learning effect evaluation and prediction is rationality,accuracy,and effectiveness,which provides a powerful help for the practical application of learning effect evaluation and prediction.
文摘As a new research field,multimodal discourse analysis is facing a lot of challenges.On the one hand,the status of multimodality in traditional linguistics is questioned.Many linguists argue that nonlinguistic signs such as gestures and visual images are out of the scope of linguistics.On the other hand,the theories and methods of multimodal discourse analysis are still at an early stage of development and have many limitations.Moreover,many researchers have misunderstandings of the field.In view of these,this article provides a brief explanation of the basic questions of multimodal discourse analysis,including why we analyze multimodal discourse,whether linguistic theories are applicable to nonlinguistic signs such as visual images and gesture,what is the scope of multimodal research,what are the main theories and methods,and what are the limitations and misunderstandings.It further points out that researchers need to have the awareness of making their research interdisciplinary,empirical,and application-oriented.It argues that multimodal research should be based on theoretical and methodological innovation,and should aim at solving real communication problems in the multimedia age.The accurate understanding of these questions is crucial for developing multimodal discourse analysis into a new discipline with strong theoretical and methodological support.
