“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
In response to the prevailing scarcity of labor and with the aim of augmenting the proportion of premium-quality fruits, a robotic grading end-effector system for harvesting was meticulously designed. The end-effector...In response to the prevailing scarcity of labor and with the aim of augmenting the proportion of premium-quality fruits, a robotic grading end-effector system for harvesting was meticulously designed. The end-effector could measure the soluble solid content (SSC) of peaches during the harvesting process to evaluate the quality of the fruit, thereby facilitating real-time grading during harvesting. As comprising a harvesting component and an information-gathering segment, the end-effector system was optimized with the primary structural parameters of its adaptive fingers using a mathematical model of peach morphology. Also, the buffering materials for mitigating the pressure exerted by the adaptive fingers on the peaches were compared. Furthermore, feasibility analyses of the grasping actions were conducted based on the interaction forces between the adaptive fingers and the peaches. To grade the quality of peaches, SSC was used as an indicator to assess and grade the quality of the peaches. The spectra of peaches within the wavelength range of 590-1100 nm were collected, and a predictive model for SSC was developed. The correlation coefficients for the calibration set and prediction sets of the predictive model were 0.880 and 0.890, with corresponding root mean square errors of 0.370% and 0.357% Brix, respectively. In addition, a robustness and accuracy assessment was conducted using 30 peach samples, yielding a correlation coefficient of 0.936 and a standard error of 0.386% Brix between the predicted and measured values of SSC. The results confirm that the end-effector can measure the SSC of peaches during the collection process, providing novel concepts and theoretical foundations for real-time harvesting and grading.展开更多
As important public venues for the communication of scientific culture, science and technology museums are increasingly valued for their role in enhancing the public's scientific literacy. In recent years, researc...As important public venues for the communication of scientific culture, science and technology museums are increasingly valued for their role in enhancing the public's scientific literacy. In recent years, research on the science-communication(popularization) function of science and technology museums in China has broadened in scope, and the history of science, as an important academic resource for promoting science, has gained growing recognition. However, from a historiographical perspective, only a few scholars have engaged in research on the application of the history of science in science and technology museums. Research on this subject remains in an infant stage and fails to fully capture the underpinning role of the history of science in science education and communication. In particular, as a theoretical resource, the significance and value of views on the history of science in guiding science communication has been largely neglected. This paper discusses the current situation and associated problems at both the research and practical levels of museums,explores the importance and necessity of science communication in museums in the context of science historiography, and provides some insights for science communication in museums.展开更多
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.
基金supported by the National Natural Science Foundation of China (Grant No. U23A20175)the “Leading Goose” R&D Program of Zhejiang (Grant No. 2022C02052)+1 种基金the Scientific Research Fund of Zhejiang Provincial Education Department (Grant No. Y202250747)Wenzhou Science and Technology Commissioner Special Project (Grant No. X2023045).
文摘In response to the prevailing scarcity of labor and with the aim of augmenting the proportion of premium-quality fruits, a robotic grading end-effector system for harvesting was meticulously designed. The end-effector could measure the soluble solid content (SSC) of peaches during the harvesting process to evaluate the quality of the fruit, thereby facilitating real-time grading during harvesting. As comprising a harvesting component and an information-gathering segment, the end-effector system was optimized with the primary structural parameters of its adaptive fingers using a mathematical model of peach morphology. Also, the buffering materials for mitigating the pressure exerted by the adaptive fingers on the peaches were compared. Furthermore, feasibility analyses of the grasping actions were conducted based on the interaction forces between the adaptive fingers and the peaches. To grade the quality of peaches, SSC was used as an indicator to assess and grade the quality of the peaches. The spectra of peaches within the wavelength range of 590-1100 nm were collected, and a predictive model for SSC was developed. The correlation coefficients for the calibration set and prediction sets of the predictive model were 0.880 and 0.890, with corresponding root mean square errors of 0.370% and 0.357% Brix, respectively. In addition, a robustness and accuracy assessment was conducted using 30 peach samples, yielding a correlation coefficient of 0.936 and a standard error of 0.386% Brix between the predicted and measured values of SSC. The results confirm that the end-effector can measure the SSC of peaches during the collection process, providing novel concepts and theoretical foundations for real-time harvesting and grading.
基金Supported by “the Fundamental Research Funds for the Central Universities”Interdisciplinary Research Project for Young Teachers of University of Science and Technology Beijing (No. FRF-IDRY-22-027)“Research on the Localization of Modern and Contemporary Technology in China” (No.FRF-BR-23-04B)
文摘As important public venues for the communication of scientific culture, science and technology museums are increasingly valued for their role in enhancing the public's scientific literacy. In recent years, research on the science-communication(popularization) function of science and technology museums in China has broadened in scope, and the history of science, as an important academic resource for promoting science, has gained growing recognition. However, from a historiographical perspective, only a few scholars have engaged in research on the application of the history of science in science and technology museums. Research on this subject remains in an infant stage and fails to fully capture the underpinning role of the history of science in science education and communication. In particular, as a theoretical resource, the significance and value of views on the history of science in guiding science communication has been largely neglected. This paper discusses the current situation and associated problems at both the research and practical levels of museums,explores the importance and necessity of science communication in museums in the context of science historiography, and provides some insights for science communication in museums.
