Drawing on the insights from multimodal critical discourse analysis,this study mainly focuses on two super-gerontic celebrities by selecting 60 videos to elucidate how their images are represented through linguistic(e...Drawing on the insights from multimodal critical discourse analysis,this study mainly focuses on two super-gerontic celebrities by selecting 60 videos to elucidate how their images are represented through linguistic(e.g.,captions,and hashtags)and other semiotic resources(e.g.,accessories,semiotic tools,and etc.).The findings suggest that images of the old celebrities are characterized as being attractive,wise,stylish,healthy and young,indicating that they are breaking up the stereotypical images of old people who are unattractive,dependent and senile.The phenomenon of old influencers making themselves visible on the social media suggests that they are moving towards successful aging with the backdrop of aging society in China.This present study suggests that multimodal construction of old celebrities can inform relevant practice to combat ageism in the media and helps to empower the old people in the media discourse.In doing so,the pedagogical implication of present study lies in its education about how we view aging in the aging society.展开更多
Single-pixel imaging(SPI)is a prominent scattering media imaging technique that allows image transmission via one-dimensional detection under structured illumination,with applications spanning from long-range imaging ...Single-pixel imaging(SPI)is a prominent scattering media imaging technique that allows image transmission via one-dimensional detection under structured illumination,with applications spanning from long-range imaging to microscopy.Recent advancements leveraging deep learning(DL)have significantly improved SPI performance,especially at low compression ratios.However,most DL-based SPI methods proposed so far rely heavily on extensive labeled datasets for supervised training,which are often impractical in real-world scenarios.Here,we propose an unsupervised learningenabled label-free SPI method for resilient information transmission through unknown dynamic scattering media.Additionally,we introduce a physics-informed autoencoder framework to optimize encoding schemes,further enhancing image quality at low compression ratios.Simulation and experimental results demonstrate that high-efficiency data transmission with structural similarity exceeding 0.9 is achieved through challenging turbulent channels.Moreover,experiments demonstrate that in a 5 m underwater dynamic turbulent channel,USAF target imaging quality surpasses traditional methods by over 13 dB.The compressive encoded transmission of 720×720 resolution video exceeding 30 seconds with great fidelity is also successfully demonstrated.These preliminary results suggest that our proposed method opens up a new paradigm for resilient information transmission through unknown dynamic scattering media and holds potential for broader applications within many other scattering media imaging technologies.展开更多
Heat source function method is adopted in the present paper to derive elementary solutions of coupled thermo-hydro-mechanical consolidation for saturated porous media under conjunct actions of instantaneous point heat...Heat source function method is adopted in the present paper to derive elementary solutions of coupled thermo-hydro-mechanical consolidation for saturated porous media under conjunct actions of instantaneous point heat source, instantaneous point fluid source and constant volume force. By using the so-called fictitious heat source method and images method, the solutions of a semi-infinite saturated porous medium subjected to a local heat source with time-varied intensity on its free surface are developed from elementary solutions. The numerical integral methods for calculating the unsteady temperature, pore pressure and displacement fields are given. The thermomechanical response are analyzed for the case of a circular planar heat source. Besides, the thermal consolidation characteristics of a saturated porous medium subjected to a harmonic thermal loading are also given, and the fluctuation processes of the field variables located below the center of heat source are analyzed.展开更多
“Other-creation”refers to the general recognition of a specific image by a third party,while“self-creation”refers to the active creation of an ideal image by an individual.Xiaohongshu,as a social media platform sh...“Other-creation”refers to the general recognition of a specific image by a third party,while“self-creation”refers to the active creation of an ideal image by an individual.Xiaohongshu,as a social media platform showcasing the Paris Olympics,has shaped a series of female athlete images that are widely recognized by the public,though there are some differences between these two kinds of images.Based on the relevant theories of image shaping and social media,this paper selects 60 relevant posts on Xiaohongshu featuring Sun Yingsha and Zheng Qinwen,examines their main contents and thematic expressions,and analyzes various images of female athletes on the platform,thereby exploring the reasons behind the formation of image differences.The results demonstrate that the identity consists of both other-created and self-created images,and the two are mutually influential.The stronger the self-created image,the more closely the other-created image aligns with it,and the weaker the self-created image,the more it is dominated by the other-created image.展开更多
The anti-Japanese woodcuts focus on the red revolutionary culture and describe the connotation of the Anti-Japanese War era,which is self-evident in the commemorative value of China’s revolutionary struggle history.F...The anti-Japanese woodcuts focus on the red revolutionary culture and describe the connotation of the Anti-Japanese War era,which is self-evident in the commemorative value of China’s revolutionary struggle history.For example,in Shanxi,China,woodcut art activities and social practice promotion activities organized around the theme of the Anti-Japanese War are also everywhere,which all show the people’s nature of the Chinese people during the revolutionary struggle from the two aspects of the red culture of the Anti-Japanese War and traditional art and culture,and its humanistic connotation is quite profound.In this paper,we first introduce the historical origin of woodcut during the Anti-Japanese War,and then show the people’s value connotation of woodcut art activities in Shanxi.This paper mainly discusses the image narration,language and picture narration and construction significance of woodcuts in Shanxi’s War of Resistance,fully reveals the narrative nature of image media,strives to arouse people’s recognition of this period of Shanxi’s War of Resistance culture and history,and reflects the realistic value and significance of Shanxi’s War of Resistance Woodcuts art activities.展开更多
Visual perception of humans penetrating turbid medium is hampered by scattering.Various techniques have been prompted recently to recover optical imaging through turbid materials.Among them,speckle correlation based o...Visual perception of humans penetrating turbid medium is hampered by scattering.Various techniques have been prompted recently to recover optical imaging through turbid materials.Among them,speckle correlation based on deconvolution is one of the most attractive methods taking advantage of high imaging quality,robustness,eas-of-use,and ease-of-integration.By exploiting the point spread function(PSF)of the scattering system,large Field-of-View,extended Depth-of-Field,noninvasiveness and spectral resoluation are now available as successful solutions for high quality and multifunctional image reconstruction.In this paper,we review the progress of imaging through a scattering medium based on deconvolution method,including the principle,the breakthrough of the limitation of the optical memory ffect,the improvement of the deconvolution algorithm and innovative applications.展开更多
A face-to-face qualitative interview study was conducted to examine the perceived gender roles and gender identities among 10 to 12 years old girls in Hong Kong. Sixteen girls aged 10 to 12 were asked to take pictures...A face-to-face qualitative interview study was conducted to examine the perceived gender roles and gender identities among 10 to 12 years old girls in Hong Kong. Sixteen girls aged 10 to 12 were asked to take pictures from the media they consumed that illustrated ＂What girls or women should or should not be; and what girls or women should or should not do＂. Analysis of interviews and images captured found that celebrities and characters in popular media play a significant role in socializing preadolescent girls on gender roles and gender identity formation. Celebrities and media characters that caught the interviewees＇ attention were mainly female adult entertainers and media characters. Girls showed admiration of specific talents and personalities of the celebrities and media characters. They paid much attention to the private lives of the celebrities. They learned from celebrities and media characters that certain behaviors were not acceptable in the social arena.展开更多
As a significant genre of Hollywood blockbusters,science fiction films showcase the unbeatable technological prowess of the United States,serving as a vital avenue for international communication and the display of a ...As a significant genre of Hollywood blockbusters,science fiction films showcase the unbeatable technological prowess of the United States,serving as a vital avenue for international communication and the display of a powerful national image.Science fiction films have left a distinctive impression on audiences worldwide,portraying the United States as the global leader in technology,owing to the presence of real scientific research facilities,enigmatic scientific symbols,advanced research equipment,and extraordinary imagination within the genre.Since the turn of the century,American science fiction films have undergone a significant shift in their communication strategy,presenting a"hardcore Iron Man"national media image.This paper,employing agenda-setting theory and content analysis methodology,explores the specific pathways through which American science fiction films constructed the national media image from 2000 to 2019.展开更多
We propose a design method for a diffractive neural network(DNN)for imaging through scattering media,offering robustness against the spatial coherence of illumination,scattering strength,and scattering dynamics.Most t...We propose a design method for a diffractive neural network(DNN)for imaging through scattering media,offering robustness against the spatial coherence of illumination,scattering strength,and scattering dynamics.Most techniques for imaging through scattering media are time-consuming and/or tailored to specific optical conditions.The DNN,composed of layers of diffractive optical elements(DOEs),optically reproduces the intensity distributions of objects behind scattering media without any computational processing.Datasets with randomized optical parameters are provided during the training process to achieve this robustness.We demonstrate the proposed method through numerical calculations and show its promising capability for DOE design.Our study paves the way for unifying and generalizing techniques for imaging through scattering media,which are currently fragmented by specific scenarios,enabling highly flexible imaging independent of optical conditions.展开更多
The problem of imaging through thick scattering media is encountered in many disciplines of science,ranging from mesoscopic physics to astronomy.Photons become diffusive after propagating through a scattering medium w...The problem of imaging through thick scattering media is encountered in many disciplines of science,ranging from mesoscopic physics to astronomy.Photons become diffusive after propagating through a scattering medium with an optical thickness of over 10 times the scattering mean free path.As a result,no image but only noise-like patterns can be directly formed.We propose a hybrid neural network for computational imaging through such thick scattering media,demonstrating the reconstruction of image information from various targets hidden behind a white polystyrene slab of 3 mm in thickness or 13.4 times the scattering mean free path.We also demonstrate that the target image can be retrieved with acceptable quality from a very small fraction of its scattered pattern,suggesting that the speckle pattern produced in this way is highly redundant.This leads to a profound question of how the information of the target being encoded into the speckle is to be addressed in future studies.展开更多
Current Retinex-based image enhancement methods with fixed scale filters cannot adapt to situations involving various depths of field and illuminations.In this paper,a simple but effective method based on adaptive ful...Current Retinex-based image enhancement methods with fixed scale filters cannot adapt to situations involving various depths of field and illuminations.In this paper,a simple but effective method based on adaptive full-scale Retinex(AFSR)is proposed to clarify underwater images or videos.First,we design an adaptive full-scale filter that is guided by the optical transmission rate to estimate illumination components.Then,to reduce the computational complexity,we develop a quantitative mapping method instead of non-linear log functions for directly calculating the reflection component.The proposed method is capable of real-time processing of underwater videos using temporal coherence and Fourier transformations.Compared with eight state-of-the-art clarification methods,our method yields comparable or better results for image contrast enhancement,color-cast correction and clarity.展开更多
Traditional one-way imaging methods become invalid when a target object is completely hidden behind scattering media. In this case, it has been much more challenging, since the light wave is distorted twice.To solve t...Traditional one-way imaging methods become invalid when a target object is completely hidden behind scattering media. In this case, it has been much more challenging, since the light wave is distorted twice.To solve this problem, we propose an imaging method, so-called round-trip imaging, based on the optical transmission matrix of the scattering medium. We show that the object can be recovered directly from the distorted output wave, where no scanning is required during the imaging process. We predict that this method might improve the imaging speed and have potential application for real-time imaging.展开更多
In the context of the era of integrated media,TV news commentary programs are undergoing profound changes.Since 2023,the Elephant News Center has emphasized"integration,"breaking down the barriers between me...In the context of the era of integrated media,TV news commentary programs are undergoing profound changes.Since 2023,the Elephant News Center has emphasized"integration,"breaking down the barriers between media such as radio,television,newspapers,websites,and mobile apps.All communication platforms and business entities have essentially achieved a shift from mere physical"addition"to a chemical"integration."In terms of building a commentary matrix,the Elephant News Center has successively launched commentary and interview brands such as Elephant News and Fengping,based on previous programs like Dialogue in Central Plains."Let thoughts be sharp,and let consensus be strong."Fengping pioneered mobile video commentary for Henan Broadcasting,adhering to the high-end discussion of high-end topics.It has continuously produced viral commentary over its hundreds of episodes,reviving traditional commentary with new vitality on the internet.However,as a"newborn"product,Fengping still has room for improvement.This paper takes the video commentary program Fengping as a case study,using the"uses and gratifications"theory to examine the"breaking the circle"phenomenon of this video commentary program in the era of integrated media and to analyze its innovative paths,aiming to explore valuable experiences for the innovative development of commentary programs.展开更多
文摘Drawing on the insights from multimodal critical discourse analysis,this study mainly focuses on two super-gerontic celebrities by selecting 60 videos to elucidate how their images are represented through linguistic(e.g.,captions,and hashtags)and other semiotic resources(e.g.,accessories,semiotic tools,and etc.).The findings suggest that images of the old celebrities are characterized as being attractive,wise,stylish,healthy and young,indicating that they are breaking up the stereotypical images of old people who are unattractive,dependent and senile.The phenomenon of old influencers making themselves visible on the social media suggests that they are moving towards successful aging with the backdrop of aging society in China.This present study suggests that multimodal construction of old celebrities can inform relevant practice to combat ageism in the media and helps to empower the old people in the media discourse.In doing so,the pedagogical implication of present study lies in its education about how we view aging in the aging society.
基金supported by the Natural Science Foundation of China Project(No.62525102).
文摘Single-pixel imaging(SPI)is a prominent scattering media imaging technique that allows image transmission via one-dimensional detection under structured illumination,with applications spanning from long-range imaging to microscopy.Recent advancements leveraging deep learning(DL)have significantly improved SPI performance,especially at low compression ratios.However,most DL-based SPI methods proposed so far rely heavily on extensive labeled datasets for supervised training,which are often impractical in real-world scenarios.Here,we propose an unsupervised learningenabled label-free SPI method for resilient information transmission through unknown dynamic scattering media.Additionally,we introduce a physics-informed autoencoder framework to optimize encoding schemes,further enhancing image quality at low compression ratios.Simulation and experimental results demonstrate that high-efficiency data transmission with structural similarity exceeding 0.9 is achieved through challenging turbulent channels.Moreover,experiments demonstrate that in a 5 m underwater dynamic turbulent channel,USAF target imaging quality surpasses traditional methods by over 13 dB.The compressive encoded transmission of 720×720 resolution video exceeding 30 seconds with great fidelity is also successfully demonstrated.These preliminary results suggest that our proposed method opens up a new paradigm for resilient information transmission through unknown dynamic scattering media and holds potential for broader applications within many other scattering media imaging technologies.
基金The project supported by the National Natural Science Foundation of China (50578008) The English text was polished by Yunming Chen
文摘Heat source function method is adopted in the present paper to derive elementary solutions of coupled thermo-hydro-mechanical consolidation for saturated porous media under conjunct actions of instantaneous point heat source, instantaneous point fluid source and constant volume force. By using the so-called fictitious heat source method and images method, the solutions of a semi-infinite saturated porous medium subjected to a local heat source with time-varied intensity on its free surface are developed from elementary solutions. The numerical integral methods for calculating the unsteady temperature, pore pressure and displacement fields are given. The thermomechanical response are analyzed for the case of a circular planar heat source. Besides, the thermal consolidation characteristics of a saturated porous medium subjected to a harmonic thermal loading are also given, and the fluctuation processes of the field variables located below the center of heat source are analyzed.
文摘“Other-creation”refers to the general recognition of a specific image by a third party,while“self-creation”refers to the active creation of an ideal image by an individual.Xiaohongshu,as a social media platform showcasing the Paris Olympics,has shaped a series of female athlete images that are widely recognized by the public,though there are some differences between these two kinds of images.Based on the relevant theories of image shaping and social media,this paper selects 60 relevant posts on Xiaohongshu featuring Sun Yingsha and Zheng Qinwen,examines their main contents and thematic expressions,and analyzes various images of female athletes on the platform,thereby exploring the reasons behind the formation of image differences.The results demonstrate that the identity consists of both other-created and self-created images,and the two are mutually influential.The stronger the self-created image,the more closely the other-created image aligns with it,and the weaker the self-created image,the more it is dominated by the other-created image.
文摘The anti-Japanese woodcuts focus on the red revolutionary culture and describe the connotation of the Anti-Japanese War era,which is self-evident in the commemorative value of China’s revolutionary struggle history.For example,in Shanxi,China,woodcut art activities and social practice promotion activities organized around the theme of the Anti-Japanese War are also everywhere,which all show the people’s nature of the Chinese people during the revolutionary struggle from the two aspects of the red culture of the Anti-Japanese War and traditional art and culture,and its humanistic connotation is quite profound.In this paper,we first introduce the historical origin of woodcut during the Anti-Japanese War,and then show the people’s value connotation of woodcut art activities in Shanxi.This paper mainly discusses the image narration,language and picture narration and construction significance of woodcuts in Shanxi’s War of Resistance,fully reveals the narrative nature of image media,strives to arouse people’s recognition of this period of Shanxi’s War of Resistance culture and history,and reflects the realistic value and significance of Shanxi’s War of Resistance Woodcuts art activities.
基金supported by National Natural Science Foundation of China(Nos.61705035,61575223,11534017 and 61475038)the Project of Department of Education of Guangdong Province(No.2018KTSCX241)+1 种基金State Key Laboratory of Optoelectronic Materials and Technologies(Sun Yat-sen University)STU Scienti¯c Research Foundation for Talents.
文摘Visual perception of humans penetrating turbid medium is hampered by scattering.Various techniques have been prompted recently to recover optical imaging through turbid materials.Among them,speckle correlation based on deconvolution is one of the most attractive methods taking advantage of high imaging quality,robustness,eas-of-use,and ease-of-integration.By exploiting the point spread function(PSF)of the scattering system,large Field-of-View,extended Depth-of-Field,noninvasiveness and spectral resoluation are now available as successful solutions for high quality and multifunctional image reconstruction.In this paper,we review the progress of imaging through a scattering medium based on deconvolution method,including the principle,the breakthrough of the limitation of the optical memory ffect,the improvement of the deconvolution algorithm and innovative applications.
文摘A face-to-face qualitative interview study was conducted to examine the perceived gender roles and gender identities among 10 to 12 years old girls in Hong Kong. Sixteen girls aged 10 to 12 were asked to take pictures from the media they consumed that illustrated ＂What girls or women should or should not be; and what girls or women should or should not do＂. Analysis of interviews and images captured found that celebrities and characters in popular media play a significant role in socializing preadolescent girls on gender roles and gender identity formation. Celebrities and media characters that caught the interviewees＇ attention were mainly female adult entertainers and media characters. Girls showed admiration of specific talents and personalities of the celebrities and media characters. They paid much attention to the private lives of the celebrities. They learned from celebrities and media characters that certain behaviors were not acceptable in the social arena.
文摘As a significant genre of Hollywood blockbusters,science fiction films showcase the unbeatable technological prowess of the United States,serving as a vital avenue for international communication and the display of a powerful national image.Science fiction films have left a distinctive impression on audiences worldwide,portraying the United States as the global leader in technology,owing to the presence of real scientific research facilities,enigmatic scientific symbols,advanced research equipment,and extraordinary imagination within the genre.Since the turn of the century,American science fiction films have undergone a significant shift in their communication strategy,presenting a"hardcore Iron Man"national media image.This paper,employing agenda-setting theory and content analysis methodology,explores the specific pathways through which American science fiction films constructed the national media image from 2000 to 2019.
基金Japan Society for the Promotion of Science(JP20H05890,JP22H05197,JP23H05444,JP23K26567)。
文摘We propose a design method for a diffractive neural network(DNN)for imaging through scattering media,offering robustness against the spatial coherence of illumination,scattering strength,and scattering dynamics.Most techniques for imaging through scattering media are time-consuming and/or tailored to specific optical conditions.The DNN,composed of layers of diffractive optical elements(DOEs),optically reproduces the intensity distributions of objects behind scattering media without any computational processing.Datasets with randomized optical parameters are provided during the training process to achieve this robustness.We demonstrate the proposed method through numerical calculations and show its promising capability for DOE design.Our study paves the way for unifying and generalizing techniques for imaging through scattering media,which are currently fragmented by specific scenarios,enabling highly flexible imaging independent of optical conditions.
基金This study was supported by the Key Research Program of Frontier Sciences,Chinese Academy of Sciences(Grant No.QYZDB-SSW-JSC002)Sino-German Center for Sino-German Cooperation Group(Grant No.GZ 1391).
文摘The problem of imaging through thick scattering media is encountered in many disciplines of science,ranging from mesoscopic physics to astronomy.Photons become diffusive after propagating through a scattering medium with an optical thickness of over 10 times the scattering mean free path.As a result,no image but only noise-like patterns can be directly formed.We propose a hybrid neural network for computational imaging through such thick scattering media,demonstrating the reconstruction of image information from various targets hidden behind a white polystyrene slab of 3 mm in thickness or 13.4 times the scattering mean free path.We also demonstrate that the target image can be retrieved with acceptable quality from a very small fraction of its scattered pattern,suggesting that the speckle pattern produced in this way is highly redundant.This leads to a profound question of how the information of the target being encoded into the speckle is to be addressed in future studies.
基金supported by the National Natural Science Foundation of China under Grant Nos.62001129 and 62161051the Xingdian Talent Support Program 2022 of Yunnan Province of China+1 种基金the Yunnan University of Finance and Economics Foundation under Grant No.2021D17the Guangxi Provincial Natural Science Foundation under Grant No.2021GXNSFBA075029.
文摘Current Retinex-based image enhancement methods with fixed scale filters cannot adapt to situations involving various depths of field and illuminations.In this paper,a simple but effective method based on adaptive full-scale Retinex(AFSR)is proposed to clarify underwater images or videos.First,we design an adaptive full-scale filter that is guided by the optical transmission rate to estimate illumination components.Then,to reduce the computational complexity,we develop a quantitative mapping method instead of non-linear log functions for directly calculating the reflection component.The proposed method is capable of real-time processing of underwater videos using temporal coherence and Fourier transformations.Compared with eight state-of-the-art clarification methods,our method yields comparable or better results for image contrast enhancement,color-cast correction and clarity.
基金supported by the National Natural Science Foundation of China(Nos.61535015,61275149,and 61275086)the Special Scientific Research Plan from Education Department of Shaanxi Provincial Government(No.16JK1083)
文摘Traditional one-way imaging methods become invalid when a target object is completely hidden behind scattering media. In this case, it has been much more challenging, since the light wave is distorted twice.To solve this problem, we propose an imaging method, so-called round-trip imaging, based on the optical transmission matrix of the scattering medium. We show that the object can be recovered directly from the distorted output wave, where no scanning is required during the imaging process. We predict that this method might improve the imaging speed and have potential application for real-time imaging.
文摘In the context of the era of integrated media,TV news commentary programs are undergoing profound changes.Since 2023,the Elephant News Center has emphasized"integration,"breaking down the barriers between media such as radio,television,newspapers,websites,and mobile apps.All communication platforms and business entities have essentially achieved a shift from mere physical"addition"to a chemical"integration."In terms of building a commentary matrix,the Elephant News Center has successively launched commentary and interview brands such as Elephant News and Fengping,based on previous programs like Dialogue in Central Plains."Let thoughts be sharp,and let consensus be strong."Fengping pioneered mobile video commentary for Henan Broadcasting,adhering to the high-end discussion of high-end topics.It has continuously produced viral commentary over its hundreds of episodes,reviving traditional commentary with new vitality on the internet.However,as a"newborn"product,Fengping still has room for improvement.This paper takes the video commentary program Fengping as a case study,using the"uses and gratifications"theory to examine the"breaking the circle"phenomenon of this video commentary program in the era of integrated media and to analyze its innovative paths,aiming to explore valuable experiences for the innovative development of commentary programs.
