The article is devoted to the psychoanalytic issues of the deconstruction of images of socialist ideals in Russian Sots Art--an ironic title of the artistic trend in which used a mixture signs of visual semiotics of ...The article is devoted to the psychoanalytic issues of the deconstruction of images of socialist ideals in Russian Sots Art--an ironic title of the artistic trend in which used a mixture signs of visual semiotics of ＂social realism＂ and ＂pop art＂ of the 1990-2000s. By comparing the idealization of the image of Lenin in Soviet art of the 1930-1950s with its grotesque interpretation in Sots Art works of the 1990s, it appears to be interesting to trace the functions of grotesque and caricature in the deconstruction of the canons of socialist realism. Thereupon, special interest is the role of the regression mechanism in the transformation of the ideals of socialist realism into laughable images.展开更多
近年来,由稀土元素和3d过渡金属构成的亚铁磁材料受到广泛的关注。亚铁磁材料既具有同铁磁材料一样的净余磁矩,又有反铁磁材料的超快动力学特征,这些性质使其成为自旋电子学领域的研究热点之一。在本工作中,采用磁控溅射的方法制备了亚...近年来,由稀土元素和3d过渡金属构成的亚铁磁材料受到广泛的关注。亚铁磁材料既具有同铁磁材料一样的净余磁矩,又有反铁磁材料的超快动力学特征,这些性质使其成为自旋电子学领域的研究热点之一。在本工作中,采用磁控溅射的方法制备了亚铁磁GdCo/Cu/Permalloy(Py)异质结,通过自旋-轨道铁磁共振(spin-orbit ferromagnetic resonance,ST-FMR)的方法研究了样品的磁化动力学和自旋传输特性,并分析了所制备样品的铁磁共振阻尼与自旋轨道矩效率。结果表明,所制备GdCo/Cu/Py异质结的自旋轨道矩(spin orbital torque,SOT)效率为−0.08,略低于重金属Pt的自旋霍尔角。同时铁磁共振阻尼分析也显示出GdCo/Cu/Py异质结中没有显著的自旋泵浦效应,导致这种现象的原因可能是界面处自旋传输的非互易性。研究证明亚铁磁GdCo薄膜不同于铁磁性材料的动态磁化特性,显示出其物理研究价值和实际应用潜力。展开更多
Ovarian cancer is one of the most aggressive and heterogeneous female tumors in the world,and serous ovarian cancer(SOC)is of particular concern for being the leading cause of ovarian cancer death.Due to its clinical ...Ovarian cancer is one of the most aggressive and heterogeneous female tumors in the world,and serous ovarian cancer(SOC)is of particular concern for being the leading cause of ovarian cancer death.Due to its clinical and biological complexities,ovarian cancer is still considered one of the most di±cult tumors to diagnose and manage.In this study,three datasets were assembled,including 30 cases of serous cystadenoma(SCA),30 cases of serous borderline tumor(SBT),and 45 cases of serous adenocarcinoma(SAC).Mueller matrix microscopy is used to obtain the polarimetry basis parameters(PBPs)of each case,combined with a machine learning(ML)model to derive the polarimetry feature parameters(PFPs)for distinguishing serous ovarian tumor(SOT).The correlation between the mean values of PBPs and the clinicopathological features of serous ovarian cancer was analyzed.The accuracies of PFPs obtained from three types of SOT for identifying dichotomous groups(SCA versus SAC,SCA versus SBT,and SBT versus SAC)were 0.91,0.92,and 0.8,respectively.The accuracy of PFP for identifying triadic groups(SCA versus SBT versus SAC)was 0.75.Correlation analysis between PBPs and the clinicopathological features of SOC was performed.There were correlations between some PBPs(δ,β,q_(L),E_(2),rqcross,P_(2),P_(3),P_(4),and P_(5))and clinicopathological features,including the International Federation of Gynecology and Obstetrics(FIGO)stage,pathological grading,preoperative ascites,malignant ascites,and peritoneal implantation.The research showed that PFPs extracted from polarization images have potential applications in quantitatively differentiating the SOTs.These polarimetry basis parameters related to the clinicopathological features of SOC can be used as prognostic factors.展开更多
The correspondence principle is an important mathematical technique to compute the non-ageing linear viscoelastic problem as it allows to take advantage of the computational methods originally developed for the elasti...The correspondence principle is an important mathematical technique to compute the non-ageing linear viscoelastic problem as it allows to take advantage of the computational methods originally developed for the elastic case. However, the correspon- dence principle becomes invalid when the materials exhibit ageing. To deal with this problem, a second-order two-scale （SOTS） computational method in the time domain is presented to predict the ageing linear viscoelastic performance of composite materials with a periodic structure. First, in the time domain, the SOTS formulation for calcu- lating the effective relaxation modulus and displacement approximate solutions of the ageing viscoelastic problem is formally derived. Error estimates of the displacement ap- proximate solutions for SOTS method are then given. Numerical results obtained by the SOTS method are shown and compared with those by the finite element method in a very fine mesh. Both the analytical and numerical results show that the SOTS computational method is feasible and efficient to predict the ageing linear viscoelastic performance of composite materials with a periodic structure.展开更多
In this paper, a kind of second-order two-scale （SOTS） computation is developed for conductive-radiative heat trans- fer problem in periodic porous materials. First of all, by the asymptotic expansion of the tempera...In this paper, a kind of second-order two-scale （SOTS） computation is developed for conductive-radiative heat trans- fer problem in periodic porous materials. First of all, by the asymptotic expansion of the temperature field, the cell problem, homogenization problem, and second-order correctors are obtained successively. Then, the corresponding finite element al- gorithms are proposed. Finally, some numerical results are presented and compared with theoretical results. The numerical results of the proposed algorithm conform with those of the FE algorithm well, demonstrating the accuracy of the present method and its potential applications in thermal engineering of porous materials.展开更多
文摘The article is devoted to the psychoanalytic issues of the deconstruction of images of socialist ideals in Russian Sots Art--an ironic title of the artistic trend in which used a mixture signs of visual semiotics of ＂social realism＂ and ＂pop art＂ of the 1990-2000s. By comparing the idealization of the image of Lenin in Soviet art of the 1930-1950s with its grotesque interpretation in Sots Art works of the 1990s, it appears to be interesting to trace the functions of grotesque and caricature in the deconstruction of the canons of socialist realism. Thereupon, special interest is the role of the regression mechanism in the transformation of the ideals of socialist realism into laughable images.
文摘近年来,由稀土元素和3d过渡金属构成的亚铁磁材料受到广泛的关注。亚铁磁材料既具有同铁磁材料一样的净余磁矩,又有反铁磁材料的超快动力学特征,这些性质使其成为自旋电子学领域的研究热点之一。在本工作中,采用磁控溅射的方法制备了亚铁磁GdCo/Cu/Permalloy(Py)异质结,通过自旋-轨道铁磁共振(spin-orbit ferromagnetic resonance,ST-FMR)的方法研究了样品的磁化动力学和自旋传输特性,并分析了所制备样品的铁磁共振阻尼与自旋轨道矩效率。结果表明,所制备GdCo/Cu/Py异质结的自旋轨道矩(spin orbital torque,SOT)效率为−0.08,略低于重金属Pt的自旋霍尔角。同时铁磁共振阻尼分析也显示出GdCo/Cu/Py异质结中没有显著的自旋泵浦效应,导致这种现象的原因可能是界面处自旋传输的非互易性。研究证明亚铁磁GdCo薄膜不同于铁磁性材料的动态磁化特性,显示出其物理研究价值和实际应用潜力。
基金supported by the Guangming District Economic Development Special Fund(2020R01043).
文摘Ovarian cancer is one of the most aggressive and heterogeneous female tumors in the world,and serous ovarian cancer(SOC)is of particular concern for being the leading cause of ovarian cancer death.Due to its clinical and biological complexities,ovarian cancer is still considered one of the most di±cult tumors to diagnose and manage.In this study,three datasets were assembled,including 30 cases of serous cystadenoma(SCA),30 cases of serous borderline tumor(SBT),and 45 cases of serous adenocarcinoma(SAC).Mueller matrix microscopy is used to obtain the polarimetry basis parameters(PBPs)of each case,combined with a machine learning(ML)model to derive the polarimetry feature parameters(PFPs)for distinguishing serous ovarian tumor(SOT).The correlation between the mean values of PBPs and the clinicopathological features of serous ovarian cancer was analyzed.The accuracies of PFPs obtained from three types of SOT for identifying dichotomous groups(SCA versus SAC,SCA versus SBT,and SBT versus SAC)were 0.91,0.92,and 0.8,respectively.The accuracy of PFP for identifying triadic groups(SCA versus SBT versus SAC)was 0.75.Correlation analysis between PBPs and the clinicopathological features of SOC was performed.There were correlations between some PBPs(δ,β,q_(L),E_(2),rqcross,P_(2),P_(3),P_(4),and P_(5))and clinicopathological features,including the International Federation of Gynecology and Obstetrics(FIGO)stage,pathological grading,preoperative ascites,malignant ascites,and peritoneal implantation.The research showed that PFPs extracted from polarization images have potential applications in quantitatively differentiating the SOTs.These polarimetry basis parameters related to the clinicopathological features of SOC can be used as prognostic factors.
基金Project supported by the National Natural Science Foundation of China(No.11471262)
文摘The correspondence principle is an important mathematical technique to compute the non-ageing linear viscoelastic problem as it allows to take advantage of the computational methods originally developed for the elastic case. However, the correspon- dence principle becomes invalid when the materials exhibit ageing. To deal with this problem, a second-order two-scale （SOTS） computational method in the time domain is presented to predict the ageing linear viscoelastic performance of composite materials with a periodic structure. First, in the time domain, the SOTS formulation for calcu- lating the effective relaxation modulus and displacement approximate solutions of the ageing viscoelastic problem is formally derived. Error estimates of the displacement ap- proximate solutions for SOTS method are then given. Numerical results obtained by the SOTS method are shown and compared with those by the finite element method in a very fine mesh. Both the analytical and numerical results show that the SOTS computational method is feasible and efficient to predict the ageing linear viscoelastic performance of composite materials with a periodic structure.
基金Project supported by the National Basic Research Program of China(Grant No.2010CB832702)the National Natural Science Foundation of China(Grant No.90916027)
文摘In this paper, a kind of second-order two-scale （SOTS） computation is developed for conductive-radiative heat trans- fer problem in periodic porous materials. First of all, by the asymptotic expansion of the temperature field, the cell problem, homogenization problem, and second-order correctors are obtained successively. Then, the corresponding finite element al- gorithms are proposed. Finally, some numerical results are presented and compared with theoretical results. The numerical results of the proposed algorithm conform with those of the FE algorithm well, demonstrating the accuracy of the present method and its potential applications in thermal engineering of porous materials.
