With the rapid development of new media,the role of network service platforms in various fields is becoming increasingly prominent.In the agricultural field,network service platforms under the background of new media ...With the rapid development of new media,the role of network service platforms in various fields is becoming increasingly prominent.In the agricultural field,network service platforms under the background of new media have brought new opportunities and challenges to strawberry growers.This paper conducted in-depth research on the impact of network service platforms on strawberry growers'income in the context of new media.Firstly,the concepts and characteristics of new media and network service platforms,as well as the theoretical basis of farmers'income increase,were explained.Then,the current application of network service platforms in strawberry cultivation was analyzed,including the cognition and use of the platform by strawberry growers,and the service content provided by the platform,such as market information push,technical guidance and training,and sales channel expansion.The influence mechanism of network service platforms on strawberry growers'income was deeply discussed,mainly reflected in reducing information asymmetry,enhancing product added value,and expanding sales channels.In summary,the network service platform under the background of new media provides strong support for strawberry growers'income increase,but still needs to be continuously improved and developed to better serve agricultural production and farmers'income increase.展开更多
The rapid advancement of network information technology has established new media technology as a significant tool for instruction in higher education both domestically and internationally.Its impact has increasingly ...The rapid advancement of network information technology has established new media technology as a significant tool for instruction in higher education both domestically and internationally.Its impact has increasingly extended into the realm of landscape architecture education,resulting in unprecedented transformations and innovative potential within traditional teaching methodologies.This study initially delineates the conceptual framework of new media technologies and subsequently conducts a comprehensive analysis of the novel opportunities and challenges that advancements in these technologies present for landscape architecture education.This study examines the effective integration of new media technology into the teaching of landscape architecture within the context of the new media environment.The objective is to innovate and modernize teaching methodologies,thereby enhancing students academic interest and fostering their capacity for innovation.Finally,several strategic recommendations for reforming teaching practices within the context of the new media environment in landscape architecture are presented,aiming to serve as a valuable reference for educators in the field.展开更多
News media profiling is helpful in preventing the spread of fake news at the source and maintaining a good media and news ecosystem.Most previous works only extract features and evaluate media from one dimension indep...News media profiling is helpful in preventing the spread of fake news at the source and maintaining a good media and news ecosystem.Most previous works only extract features and evaluate media from one dimension independently,ignoring the interconnections between different aspects.This paper proposes a novel news media bias and factuality profiling framework assisted by correlated features.This framework models the relationship and interaction between media bias and factuality,utilizing this relationship to assist in the prediction of profiling results.Our approach extracts features independently while aligning and fusing them through recursive convolu-tion and attention mechanisms,thus harnessing multi-scale interactive information across different dimensions and levels.This method improves the effectiveness of news media evaluation.Experimental results indicate that our proposed framework significantly outperforms existing methods,achieving the best performance in Accuracy and F1 score,improving by at least 1%compared to other methods.This paper further analyzes and discusses based on the experimental results.展开更多
Marketing is one of the comprehensive development strategies for production-oriented and service-oriented enterprises, and it is also an effective path to increase income and revenue for enterprises. By operating and ...Marketing is one of the comprehensive development strategies for production-oriented and service-oriented enterprises, and it is also an effective path to increase income and revenue for enterprises. By operating and selling the main products, services, cultural concepts, and many more of the enterprise in a market-oriented manner. We aim to deepen the impression of the enterprise among consumers, enhance its market influence, and seek more opportunities for cooperation and development for the enterprise. However, with increasingly fierce market competition, traditional marketing models are no longer able to maximize their effectiveness. This article firstly analyzes the positive impact of new media background on enterprise marketing in expanding the scope of information release, improving marketing targeting, and creating new marketing platforms. Secondly, it explores the problems faced by enterprises in the current marketing process, such as outdated ideological concepts, insufficient team building, and rigid marketing content. Finally, strategies such as updating marketing concepts, strengthening team building, and innovating marketing content were proposed to provide some reference and inspiration for enterprises to smoothly promote marketing work under the background of new media.展开更多
The rapid advancement of new media technology has had a great impact on people’s lifestyles,and brought opportunities and challenges to the development of ideological and political education in colleges and universit...The rapid advancement of new media technology has had a great impact on people’s lifestyles,and brought opportunities and challenges to the development of ideological and political education in colleges and universities.Ideological and political education in colleges and universities is faced with the challenge of how to grasp the opportunity,ride on the express train of science and technology,and implement the concepts of“all-round education”and“five ideologies and politics.”展开更多
New media is becoming an important method to promote physical exercise,and it is also an essential factor affecting the physical exercise behavior of college students.This study takes the influence of new media sports...New media is becoming an important method to promote physical exercise,and it is also an essential factor affecting the physical exercise behavior of college students.This study takes the influence of new media sports information on college students’physical exercise behavior as the research objective.By using a questionnaire survey and mathematical statistics,545 college students in Shandong Province of China are selected as research samples.Based on the theory of new media exposure,fitness behavior theory,and self-efficacy theory,this study systematically discusses the influence and mechanism of new media exposure on the physical exercise behavior of college students in Shandong Province,so as to help college students improve their physical exercise behavior.展开更多
From the perspective of enterprise marketing strategy planning,innovative research should be conducted based on the current trends in new media.The findings should be applied to practical activities within enterprises...From the perspective of enterprise marketing strategy planning,innovative research should be conducted based on the current trends in new media.The findings should be applied to practical activities within enterprises to achieve innovation in marketing strategy decision-making in the new media environment.Enterprises should adopt advanced communication transmission technologies and big data processing capabilities to effectively leverage the hidden value and promotional planning advantages of network media platforms.This approach can enhance customer loyalty and increase demand for new products.Enterprises should integrate into the continuously evolving new media landscape,explore their potential business characteristics,and innovate promotional methods.By effectively combining product information with digital media content,companies can ultimately achieve significant increases in corporate interests.展开更多
An open-source computational fluid dynamics(CFD)code named OpenFOAM is used to validate the flow field characteristics(flow patterns and pressure drop)around a single cylinder.Results show that OpenFOAM is suitabl...An open-source computational fluid dynamics(CFD)code named OpenFOAM is used to validate the flow field characteristics(flow patterns and pressure drop)around a single cylinder.Results show that OpenFOAM is suitable for simulating the low Reynolds number flow and Shaw's analytical expression is one of the solutions to Stokes' paradox.Experiments are performed on fibrous media and OpenFOAM simulation is carried out using the Tronville-Rivers two-dimensional random fiber model in terms of the characteristics of pressure drop.It is shown that the Kuwabara model predicts the pressure drop of fibrous filter media more accurately than the Happel model,and the experimental pressure drop is between simulated pressure drops with both non-slip and full-slip boundaries on fiber surfaces.展开更多
The current study uses a longitudinal, mixed-method approach to investigate the role that new media, such as social networking sites and video chat, play in cross-cultural adaptation and international student friendsh...The current study uses a longitudinal, mixed-method approach to investigate the role that new media, such as social networking sites and video chat, play in cross-cultural adaptation and international student friendship network development. Results indicate that international students significantly increase and adapt their new media use while abroad to communicate globally with their friends and family, and locally with their newly formed relationships. Furthermore, social networking site host national friends do not necessarily lead to the development of face-to-face host national friends;however, interaction with established face-to-face host national friends and friend groups via new media platforms leads to an increased understanding of host communication patterns. Finally, this study proposes that researchers who apply Kim’s [1] cross-cultural adaptation theory consider incorporating Host New Media Communication as a principal concept.展开更多
Chen's technique of computing synthetic seismograms, which decomposes every vector with a set of basis of orthogonality and completeness before applying the Luco-Apsel-Chen (LAC) generalized reflection and transmis...Chen's technique of computing synthetic seismograms, which decomposes every vector with a set of basis of orthogonality and completeness before applying the Luco-Apsel-Chen (LAC) generalized reflection and transmission coefficients method, is confirmed to be efficient in dealing with elastic waves in multi-layered media and accurate in any frequency range. In this article, we extend Chen's technique to the computation of coupled seismic and electromagnetic (EM) waves in layered porous media. Expanding the involved mechanical and electromagnetic fields by a set of scalar and vector wave-function basis, we obtain the fundamental equations which are subsequently solved by using a recently developed version of the LAC generalized reflection and transmission coefficients method. Our approach and corresponding program is validated by reciprocity tests. We also show a numerical example of a two-layer model with an explosion source. The P-to-EM conversion waves radiated from the interface may have potential application.展开更多
In VTI media,the conventional inversion methods based on the existing approximation formulas are difficult to accurately estimate the anisotropic parameters of reservoirs,even more so for unconventional reservoirs wit...In VTI media,the conventional inversion methods based on the existing approximation formulas are difficult to accurately estimate the anisotropic parameters of reservoirs,even more so for unconventional reservoirs with strong seismic anisotropy.Theoretically,the above problems can be solved by utilizing the exact reflection coefficients equations.However,their complicated expression increases the difficulty in calculating the Jacobian matrix when applying them to the Bayesian deterministic inversion.Therefore,the new reduced approximation equations starting from the exact equations are derived here by linearizing the slowness expressions.The relatively simple form and satisfactory calculation accuracy make the reduced equations easy to apply for inversion while ensuring the accuracy of the inversion results.In addition,the blockiness constraint,which follows the differentiable Laplace distribution,is added to the prior model to improve contrasts between layers.Then,the concept of GLI and an iterative reweighted least-squares algorithm is combined to solve the objective function.Lastly,we obtain the iterative solution expression of the elastic parameters and anisotropy parameters and achieve nonlinear AVA inversion based on the reduced equations.The test results of synthetic data and field data show that the proposed method can accurately obtain the VTI parameters from prestack AVA seismic data.展开更多
The main aim of the paper is to examine the concentration of the longitudinal dispersion phenomenon arising in fluid flow through porous media. These phenomenon yields a partial differential equation namely Burger’s ...The main aim of the paper is to examine the concentration of the longitudinal dispersion phenomenon arising in fluid flow through porous media. These phenomenon yields a partial differential equation namely Burger’s equation, which is solved by mixture of the new integral transform and the homotopy perturbation method under suitable conditions and the standard assumption. This method provides an analytical approximation in a rapidly convergent sequence with in exclusive manner computed terms. Its rapid convergence shows that the method is trustworthy and introduces a significant improvement in solving nonlinear partial differential equations over existing methods. It is concluded that the behaviour of concentration in longitudinal dispersion phenomenon is decreases as distance x is increasing with fixed time t > 0 and slightly increases with time t.展开更多
Objective Waist circumference, as a brief indicator of visceral obesity, is associated with multi-metabolic disorders and cardiovascular diseases. The present study was aimed to find out the relationship between waist...Objective Waist circumference, as a brief indicator of visceral obesity, is associated with multi-metabolic disorders and cardiovascular diseases. The present study was aimed to find out the relationship between waist circumference and carotid intima media thickness (C-IMT), as well as the best waist circumference cutoff for identifying C-IMT elevation in Chinese male patients with newly-diagnosed diabetes. Methods Five hundred and seventy-eight patients from Department of Endocrinology and Metabolism in Shanghai Sixth People's Hospital affiliated to Shanghai Jiao Tong University were enrolled. Both physical examination (for measurement of waist circumference) and carotid ultrasonography (for measurement of C-IMT) were performed. Results After grouping according to the quartiles of C-IMT, the waist circumference increased across all its quartiles. The waist circumference in 3rd and 4th quartiles (90.7_+9.8 cm and 90.8+9.6 cm) was significant higher than in 1st and 2nd quartiles (P〈0.05). When subjects were divided into 4 groups according to waist circumference, the C-IMT of subjects with waist circumference 90-95 cm was significant higher than that of subjects with waist circumference 85-90 cm and less than 85 cm respectively (P〈0.05). Both spearman and partial correlation analysis showed that C-IMT was positively correlated with waist circumference (P〈0.01). C-IMT was found significantly elevated with the increase of waist circumference. Multiple stepwise regression analysis showed that waist circumference was one of the independent risk factors of C-IMT. After an average of 2.23_+0.85 years follow up, there was a significant elevation of C-IMT in the group with baseline waist circumference over 90 cm P〈0.05), while no significant difference was detected in the group with baseline waist circumference less than 90 cm (P=0.27). Logistic regression showed that baseline waist circumference over 90 cm was associated with a relative risk to C-IMT elevation of 1.132 (95% CI 1.043-1.431, P〈0.05). Conclusion Among newly-diagnosed diabetic male patients, waist circumference over 90 cm not only reflects sub-clinical atherosclerosis in early stage, but also predicts the progression of atherosclerosis.展开更多
By analyzing the dilemma encountered in practical teaching of new media advertising course in the digital economy era, this paper explores the teaching path of new media advertising course based on “three-dimensional...By analyzing the dilemma encountered in practical teaching of new media advertising course in the digital economy era, this paper explores the teaching path of new media advertising course based on “three-dimensional” practical teaching system, and believes that it is necessary to accurately determine talent training objectives, and construct the three dimensions of practical teaching, practical ability, and new media entrepreneurship and employment. Finally, the teaching countermeasures of practical teaching system based on three dimensions are put forward.展开更多
This paper looks at the new media, communication, and political environment in both Tunisia and Egypt during and after the revolution. The new environment provided activists, politicians, civil society, and youth amon...This paper looks at the new media, communication, and political environment in both Tunisia and Egypt during and after the revolution. The new environment provided activists, politicians, civil society, and youth among others, who want to express their opinions and share their views, with various channels and means of corranunication to be part of the political action and to participate in the decision-making process. Social media played an important role in mobilizing youth to rally and protest. This is to say that a new model of communication has emerged with this new environment. The receiver has become the sender and the producer of the message. The process of communication, therefore, has been changed from one to many to from many to many, and everybody became sender and receiver at the same time. The main research question this paper aims to answer is: Are social networks enough to change the political and economic scene in the Arab World? And is there a relationship between the new communication environment and Arab spring? The year 2011 has been in the Arab world the year of social networks and radical changes in the political scene where a score of dictators were ousted. New political communication networks and mechanisms took place, and for the first time in Arab political communication, public opinion was a major political player. Social networks helped tremendously the formation of new public sphere where the public finds its way in the media and communication processes. At their best, new media can mobilize crowds and masses to rally and protest. They can give a social perspective to movements. However, they can't make change and implement democracy. After the collapse of the regimes in Tunisia and Egypt, things are not getting any better. There is no democratic transition, and both countries are experiencing complex economic, social, and political problems.展开更多
With the development of the economy,film and television education has gradually received more and more attention.With the rapid development of new media technologies,there are still some problems in film and televisio...With the development of the economy,film and television education has gradually received more and more attention.With the rapid development of new media technologies,there are still some problems in film and television education in the new media environment.This paper mainly analyzes the problems faced by film and television education in the new media environment,and the development direction of film and television education in the new media era,and explores the forms of film and television education and film industry integration.展开更多
With the continuous development of the economy and society,new media technologies have been widely used in every industry and all walks of life.New media technologies are also applied in the ideological politics educa...With the continuous development of the economy and society,new media technologies have been widely used in every industry and all walks of life.New media technologies are also applied in the ideological politics education of the Chinese college students.Therefore,this article makes a brief analysis of college education in the context of the new media technology.New media technology is applied to the ideological politics education of college students,which not only places the emphasis on the importance of ideological politics in an intuitive manner towards the students,but also creates a good social atmosphere and innovates the ideological and moral education model.展开更多
In this article, we have derived a new and more general formulation of Love waves in arbitrarily irregular multi-layered media by using the global generalized reflection/transmission (abbreviated to R/T thereafter) ma...In this article, we have derived a new and more general formulation of Love waves in arbitrarily irregular multi-layered media by using the global generalized reflection/transmission (abbreviated to R/T thereafter) matrices method developed earlier by Chen [17~20]. From the basic principle that the modal solutions are the non-trivial solutions of the free elastodynamic equation under appropriate boundary conditions, we naturally derived the characteristic frequencies and the corresponding distorted modes of Love wave in irregular multi-layered media. Moreover, we have derived the corresponding excitation formulation of Love waves in such laterally heterogeneous media by using the general solution of elastodynamic equation [17~20]. Similar to the result for laterally homogeneous layered structure, the Love waves radiated from a point source in irregular multi-layered media can be expressed as a superposition of distorted modes. Since the structure model used here is quite arbitrary, it can be used for展开更多
文摘With the rapid development of new media,the role of network service platforms in various fields is becoming increasingly prominent.In the agricultural field,network service platforms under the background of new media have brought new opportunities and challenges to strawberry growers.This paper conducted in-depth research on the impact of network service platforms on strawberry growers'income in the context of new media.Firstly,the concepts and characteristics of new media and network service platforms,as well as the theoretical basis of farmers'income increase,were explained.Then,the current application of network service platforms in strawberry cultivation was analyzed,including the cognition and use of the platform by strawberry growers,and the service content provided by the platform,such as market information push,technical guidance and training,and sales channel expansion.The influence mechanism of network service platforms on strawberry growers'income was deeply discussed,mainly reflected in reducing information asymmetry,enhancing product added value,and expanding sales channels.In summary,the network service platform under the background of new media provides strong support for strawberry growers'income increase,but still needs to be continuously improved and developed to better serve agricultural production and farmers'income increase.
基金Supported by Teaching Quality and Teaching Reform Project for Undergraduate Colleges and Universities in Guangdong Province(YJGH[2023]4)Curriculum Ideology and Politics Demonstration Speciality of Lingnan Normal University(LSJW[2021]124)&(LSJW[2022]155).
文摘The rapid advancement of network information technology has established new media technology as a significant tool for instruction in higher education both domestically and internationally.Its impact has increasingly extended into the realm of landscape architecture education,resulting in unprecedented transformations and innovative potential within traditional teaching methodologies.This study initially delineates the conceptual framework of new media technologies and subsequently conducts a comprehensive analysis of the novel opportunities and challenges that advancements in these technologies present for landscape architecture education.This study examines the effective integration of new media technology into the teaching of landscape architecture within the context of the new media environment.The objective is to innovate and modernize teaching methodologies,thereby enhancing students academic interest and fostering their capacity for innovation.Finally,several strategic recommendations for reforming teaching practices within the context of the new media environment in landscape architecture are presented,aiming to serve as a valuable reference for educators in the field.
基金funded by“the Fundamental Research Funds for the Central Universities”,No.CUC23ZDTJ005.
文摘News media profiling is helpful in preventing the spread of fake news at the source and maintaining a good media and news ecosystem.Most previous works only extract features and evaluate media from one dimension independently,ignoring the interconnections between different aspects.This paper proposes a novel news media bias and factuality profiling framework assisted by correlated features.This framework models the relationship and interaction between media bias and factuality,utilizing this relationship to assist in the prediction of profiling results.Our approach extracts features independently while aligning and fusing them through recursive convolu-tion and attention mechanisms,thus harnessing multi-scale interactive information across different dimensions and levels.This method improves the effectiveness of news media evaluation.Experimental results indicate that our proposed framework significantly outperforms existing methods,achieving the best performance in Accuracy and F1 score,improving by at least 1%compared to other methods.This paper further analyzes and discusses based on the experimental results.
文摘Marketing is one of the comprehensive development strategies for production-oriented and service-oriented enterprises, and it is also an effective path to increase income and revenue for enterprises. By operating and selling the main products, services, cultural concepts, and many more of the enterprise in a market-oriented manner. We aim to deepen the impression of the enterprise among consumers, enhance its market influence, and seek more opportunities for cooperation and development for the enterprise. However, with increasingly fierce market competition, traditional marketing models are no longer able to maximize their effectiveness. This article firstly analyzes the positive impact of new media background on enterprise marketing in expanding the scope of information release, improving marketing targeting, and creating new marketing platforms. Secondly, it explores the problems faced by enterprises in the current marketing process, such as outdated ideological concepts, insufficient team building, and rigid marketing content. Finally, strategies such as updating marketing concepts, strengthening team building, and innovating marketing content were proposed to provide some reference and inspiration for enterprises to smoothly promote marketing work under the background of new media.
文摘The rapid advancement of new media technology has had a great impact on people’s lifestyles,and brought opportunities and challenges to the development of ideological and political education in colleges and universities.Ideological and political education in colleges and universities is faced with the challenge of how to grasp the opportunity,ride on the express train of science and technology,and implement the concepts of“all-round education”and“five ideologies and politics.”
文摘New media is becoming an important method to promote physical exercise,and it is also an essential factor affecting the physical exercise behavior of college students.This study takes the influence of new media sports information on college students’physical exercise behavior as the research objective.By using a questionnaire survey and mathematical statistics,545 college students in Shandong Province of China are selected as research samples.Based on the theory of new media exposure,fitness behavior theory,and self-efficacy theory,this study systematically discusses the influence and mechanism of new media exposure on the physical exercise behavior of college students in Shandong Province,so as to help college students improve their physical exercise behavior.
文摘From the perspective of enterprise marketing strategy planning,innovative research should be conducted based on the current trends in new media.The findings should be applied to practical activities within enterprises to achieve innovation in marketing strategy decision-making in the new media environment.Enterprises should adopt advanced communication transmission technologies and big data processing capabilities to effectively leverage the hidden value and promotional planning advantages of network media platforms.This approach can enhance customer loyalty and increase demand for new products.Enterprises should integrate into the continuously evolving new media landscape,explore their potential business characteristics,and innovate promotional methods.By effectively combining product information with digital media content,companies can ultimately achieve significant increases in corporate interests.
基金China Scholarship Council Postgraduate Scholarship Program(No.2007U20027)the National Natural Science Foundation of China(No.50876020)the National Key Technology R&D Program of China during the 11th Five-Year Plan Period(No.2008BAJ12B02)
文摘An open-source computational fluid dynamics(CFD)code named OpenFOAM is used to validate the flow field characteristics(flow patterns and pressure drop)around a single cylinder.Results show that OpenFOAM is suitable for simulating the low Reynolds number flow and Shaw's analytical expression is one of the solutions to Stokes' paradox.Experiments are performed on fibrous media and OpenFOAM simulation is carried out using the Tronville-Rivers two-dimensional random fiber model in terms of the characteristics of pressure drop.It is shown that the Kuwabara model predicts the pressure drop of fibrous filter media more accurately than the Happel model,and the experimental pressure drop is between simulated pressure drops with both non-slip and full-slip boundaries on fiber surfaces.
文摘The current study uses a longitudinal, mixed-method approach to investigate the role that new media, such as social networking sites and video chat, play in cross-cultural adaptation and international student friendship network development. Results indicate that international students significantly increase and adapt their new media use while abroad to communicate globally with their friends and family, and locally with their newly formed relationships. Furthermore, social networking site host national friends do not necessarily lead to the development of face-to-face host national friends;however, interaction with established face-to-face host national friends and friend groups via new media platforms leads to an increased understanding of host communication patterns. Finally, this study proposes that researchers who apply Kim’s [1] cross-cultural adaptation theory consider incorporating Host New Media Communication as a principal concept.
基金supported by the Natural R&D Special Fund for Public Welfare Industry(No.200808069)National Natural Science Foundation of China(Nos.40974038,40774028 and 40821062)
文摘Chen's technique of computing synthetic seismograms, which decomposes every vector with a set of basis of orthogonality and completeness before applying the Luco-Apsel-Chen (LAC) generalized reflection and transmission coefficients method, is confirmed to be efficient in dealing with elastic waves in multi-layered media and accurate in any frequency range. In this article, we extend Chen's technique to the computation of coupled seismic and electromagnetic (EM) waves in layered porous media. Expanding the involved mechanical and electromagnetic fields by a set of scalar and vector wave-function basis, we obtain the fundamental equations which are subsequently solved by using a recently developed version of the LAC generalized reflection and transmission coefficients method. Our approach and corresponding program is validated by reciprocity tests. We also show a numerical example of a two-layer model with an explosion source. The P-to-EM conversion waves radiated from the interface may have potential application.
文摘In VTI media,the conventional inversion methods based on the existing approximation formulas are difficult to accurately estimate the anisotropic parameters of reservoirs,even more so for unconventional reservoirs with strong seismic anisotropy.Theoretically,the above problems can be solved by utilizing the exact reflection coefficients equations.However,their complicated expression increases the difficulty in calculating the Jacobian matrix when applying them to the Bayesian deterministic inversion.Therefore,the new reduced approximation equations starting from the exact equations are derived here by linearizing the slowness expressions.The relatively simple form and satisfactory calculation accuracy make the reduced equations easy to apply for inversion while ensuring the accuracy of the inversion results.In addition,the blockiness constraint,which follows the differentiable Laplace distribution,is added to the prior model to improve contrasts between layers.Then,the concept of GLI and an iterative reweighted least-squares algorithm is combined to solve the objective function.Lastly,we obtain the iterative solution expression of the elastic parameters and anisotropy parameters and achieve nonlinear AVA inversion based on the reduced equations.The test results of synthetic data and field data show that the proposed method can accurately obtain the VTI parameters from prestack AVA seismic data.
文摘The main aim of the paper is to examine the concentration of the longitudinal dispersion phenomenon arising in fluid flow through porous media. These phenomenon yields a partial differential equation namely Burger’s equation, which is solved by mixture of the new integral transform and the homotopy perturbation method under suitable conditions and the standard assumption. This method provides an analytical approximation in a rapidly convergent sequence with in exclusive manner computed terms. Its rapid convergence shows that the method is trustworthy and introduces a significant improvement in solving nonlinear partial differential equations over existing methods. It is concluded that the behaviour of concentration in longitudinal dispersion phenomenon is decreases as distance x is increasing with fixed time t > 0 and slightly increases with time t.
基金funded by National Key Technology R&D Program of China(2012BAI02B03)Key Discipline of Public Health of Shanghai(Epidemiology)(12GWZX0104)
文摘Objective Waist circumference, as a brief indicator of visceral obesity, is associated with multi-metabolic disorders and cardiovascular diseases. The present study was aimed to find out the relationship between waist circumference and carotid intima media thickness (C-IMT), as well as the best waist circumference cutoff for identifying C-IMT elevation in Chinese male patients with newly-diagnosed diabetes. Methods Five hundred and seventy-eight patients from Department of Endocrinology and Metabolism in Shanghai Sixth People's Hospital affiliated to Shanghai Jiao Tong University were enrolled. Both physical examination (for measurement of waist circumference) and carotid ultrasonography (for measurement of C-IMT) were performed. Results After grouping according to the quartiles of C-IMT, the waist circumference increased across all its quartiles. The waist circumference in 3rd and 4th quartiles (90.7_+9.8 cm and 90.8+9.6 cm) was significant higher than in 1st and 2nd quartiles (P〈0.05). When subjects were divided into 4 groups according to waist circumference, the C-IMT of subjects with waist circumference 90-95 cm was significant higher than that of subjects with waist circumference 85-90 cm and less than 85 cm respectively (P〈0.05). Both spearman and partial correlation analysis showed that C-IMT was positively correlated with waist circumference (P〈0.01). C-IMT was found significantly elevated with the increase of waist circumference. Multiple stepwise regression analysis showed that waist circumference was one of the independent risk factors of C-IMT. After an average of 2.23_+0.85 years follow up, there was a significant elevation of C-IMT in the group with baseline waist circumference over 90 cm P〈0.05), while no significant difference was detected in the group with baseline waist circumference less than 90 cm (P=0.27). Logistic regression showed that baseline waist circumference over 90 cm was associated with a relative risk to C-IMT elevation of 1.132 (95% CI 1.043-1.431, P〈0.05). Conclusion Among newly-diagnosed diabetic male patients, waist circumference over 90 cm not only reflects sub-clinical atherosclerosis in early stage, but also predicts the progression of atherosclerosis.
基金Sponsored by 2022 “Tourism Industry Economic Teaching Innovation Team” of Taishan University。
文摘By analyzing the dilemma encountered in practical teaching of new media advertising course in the digital economy era, this paper explores the teaching path of new media advertising course based on “three-dimensional” practical teaching system, and believes that it is necessary to accurately determine talent training objectives, and construct the three dimensions of practical teaching, practical ability, and new media entrepreneurship and employment. Finally, the teaching countermeasures of practical teaching system based on three dimensions are put forward.
文摘This paper looks at the new media, communication, and political environment in both Tunisia and Egypt during and after the revolution. The new environment provided activists, politicians, civil society, and youth among others, who want to express their opinions and share their views, with various channels and means of corranunication to be part of the political action and to participate in the decision-making process. Social media played an important role in mobilizing youth to rally and protest. This is to say that a new model of communication has emerged with this new environment. The receiver has become the sender and the producer of the message. The process of communication, therefore, has been changed from one to many to from many to many, and everybody became sender and receiver at the same time. The main research question this paper aims to answer is: Are social networks enough to change the political and economic scene in the Arab World? And is there a relationship between the new communication environment and Arab spring? The year 2011 has been in the Arab world the year of social networks and radical changes in the political scene where a score of dictators were ousted. New political communication networks and mechanisms took place, and for the first time in Arab political communication, public opinion was a major political player. Social networks helped tremendously the formation of new public sphere where the public finds its way in the media and communication processes. At their best, new media can mobilize crowds and masses to rally and protest. They can give a social perspective to movements. However, they can't make change and implement democracy. After the collapse of the regimes in Tunisia and Egypt, things are not getting any better. There is no democratic transition, and both countries are experiencing complex economic, social, and political problems.
文摘With the development of the economy,film and television education has gradually received more and more attention.With the rapid development of new media technologies,there are still some problems in film and television education in the new media environment.This paper mainly analyzes the problems faced by film and television education in the new media environment,and the development direction of film and television education in the new media era,and explores the forms of film and television education and film industry integration.
文摘With the continuous development of the economy and society,new media technologies have been widely used in every industry and all walks of life.New media technologies are also applied in the ideological politics education of the Chinese college students.Therefore,this article makes a brief analysis of college education in the context of the new media technology.New media technology is applied to the ideological politics education of college students,which not only places the emphasis on the importance of ideological politics in an intuitive manner towards the students,but also creates a good social atmosphere and innovates the ideological and moral education model.
文摘In this article, we have derived a new and more general formulation of Love waves in arbitrarily irregular multi-layered media by using the global generalized reflection/transmission (abbreviated to R/T thereafter) matrices method developed earlier by Chen [17~20]. From the basic principle that the modal solutions are the non-trivial solutions of the free elastodynamic equation under appropriate boundary conditions, we naturally derived the characteristic frequencies and the corresponding distorted modes of Love wave in irregular multi-layered media. Moreover, we have derived the corresponding excitation formulation of Love waves in such laterally heterogeneous media by using the general solution of elastodynamic equation [17~20]. Similar to the result for laterally homogeneous layered structure, the Love waves radiated from a point source in irregular multi-layered media can be expressed as a superposition of distorted modes. Since the structure model used here is quite arbitrary, it can be used for