The possibility of a Saudi rapprochement with Israel has been continuously influenced by the the domestic barriers within the Saudi community and the Saudi historical narratives on the regional security perceptions of...The possibility of a Saudi rapprochement with Israel has been continuously influenced by the the domestic barriers within the Saudi community and the Saudi historical narratives on the regional security perceptions of the Saudi decision-makers.After the appointment of Prince Mohammed bin Salman as the Minister of Defense in 2015,King Salman’s government adopted a new discourse in domestic and foreign policy built upon a redefined Saudi identity rhetorically distanced from its Islamic neighbours and moved towards a nationalised tone.The unstable nature of the regional security dynamics forces the kingdom to actively reconstruct new security routines based on the emerging regional security dynamics and repositions the alliances.At this juncture,this research aims at understanding the rationality of the rise and fall of the intensity of Saudi foreign policy towards a normalisation process with Israel within the borders of the redefined Saudi national identity and regional threat perceptions.展开更多
The article examines a window of opportunity that emerged between 1955 and 1957 and which could have resulted in the normalisation of Saudi Arabia’s relations with the People’s Republic of China,along with a few oth...The article examines a window of opportunity that emerged between 1955 and 1957 and which could have resulted in the normalisation of Saudi Arabia’s relations with the People’s Republic of China,along with a few other states from the communist bloc.As the article will show,this possibility emerged as a by-product of the Kingdom’s national security challenges during that juncture,and which in turn contributed towards its embrace of a strategy playing both sides of the Cold War divide against one another.This strategy elicited the desired American response which,hand in hand with changing Saudi assessments of regional threats by late 1956,consolidated the American-Saudi security partnership and foreclosed Sino-Saudi normalisation.While the Kingdom had‘moved on’by 1957,a reading of open Chinese sources from the late 1950s suggests that Beijing continued to harbour the hope that formal relations could be established.展开更多
Here,we introduce the normalisations for the marginal index and the Banzhaf–Owen index,respectively.We show that there exists reduced games that could be adopted to characterise these two normalisations.Further,alter...Here,we introduce the normalisations for the marginal index and the Banzhaf–Owen index,respectively.We show that there exists reduced games that could be adopted to characterise these two normalisations.Further,alternative formulations are also proposed by applying excess functions.Based on reduced games and excess functions,we provide different dynamic processes for these two normalisations.展开更多
乳腺癌磁共振成像(nuclear magnetic resonance imaging,MRI)数据由于不同医院采集方式不同、设备不同或病人等自身原因,会存在同一病人不同序列缺失的问题。目前主流的图像生成对抗网络Pix2Pix和Cycle-consistency是医学图像生成的两...乳腺癌磁共振成像(nuclear magnetic resonance imaging,MRI)数据由于不同医院采集方式不同、设备不同或病人等自身原因,会存在同一病人不同序列缺失的问题。目前主流的图像生成对抗网络Pix2Pix和Cycle-consistency是医学图像生成的两种主要模式,这类方法要求不同MRI序列数据配对出现,难以处理存在缺失的数据,此外,该类方法往往关注整幅图像的生成质量,缺少对疾病诊断更有价值的病灶区域的生成质量的监控。针对以上问题,该文受配准网络(RegGAN)自适应对准图像空间分布的启发,设计了一种新的基于特征增强的双注意力配准生成对抗网络DA-RegGAN。该网络在生成器中引入卷积注意力模块,使网络更注重病灶的学习;在判别器中添加梯度正则化约束,主要解决网络训练不稳定容易出现模式崩溃的现象,使网络生成包含更清晰的病灶细节全局图。该文在1697幅乳腺数据上开展消融实验、不同图像生成算法间的对比实验、肿瘤分类实验,进一步验证了方法的有效性。与原始RegGAN比,全局图像生成质量和局部病灶图像生成质量均得到提升,局部图像质量较原始PSNR提升了0.518,SSIM提升了0.021;全局图像质量较原始PSNR提升了0.584,SSIM提升了0.020。展开更多
文摘The possibility of a Saudi rapprochement with Israel has been continuously influenced by the the domestic barriers within the Saudi community and the Saudi historical narratives on the regional security perceptions of the Saudi decision-makers.After the appointment of Prince Mohammed bin Salman as the Minister of Defense in 2015,King Salman’s government adopted a new discourse in domestic and foreign policy built upon a redefined Saudi identity rhetorically distanced from its Islamic neighbours and moved towards a nationalised tone.The unstable nature of the regional security dynamics forces the kingdom to actively reconstruct new security routines based on the emerging regional security dynamics and repositions the alliances.At this juncture,this research aims at understanding the rationality of the rise and fall of the intensity of Saudi foreign policy towards a normalisation process with Israel within the borders of the redefined Saudi national identity and regional threat perceptions.
基金special issue of Sino-Saudi Relations is a joint project of Asian Journal of Middle Eastern and Islamic Studies and King Faisal Center for Research and Islamic Studies,Saudi Arabia.
文摘The article examines a window of opportunity that emerged between 1955 and 1957 and which could have resulted in the normalisation of Saudi Arabia’s relations with the People’s Republic of China,along with a few other states from the communist bloc.As the article will show,this possibility emerged as a by-product of the Kingdom’s national security challenges during that juncture,and which in turn contributed towards its embrace of a strategy playing both sides of the Cold War divide against one another.This strategy elicited the desired American response which,hand in hand with changing Saudi assessments of regional threats by late 1956,consolidated the American-Saudi security partnership and foreclosed Sino-Saudi normalisation.While the Kingdom had‘moved on’by 1957,a reading of open Chinese sources from the late 1950s suggests that Beijing continued to harbour the hope that formal relations could be established.
文摘Here,we introduce the normalisations for the marginal index and the Banzhaf–Owen index,respectively.We show that there exists reduced games that could be adopted to characterise these two normalisations.Further,alternative formulations are also proposed by applying excess functions.Based on reduced games and excess functions,we provide different dynamic processes for these two normalisations.
文摘乳腺癌磁共振成像(nuclear magnetic resonance imaging,MRI)数据由于不同医院采集方式不同、设备不同或病人等自身原因,会存在同一病人不同序列缺失的问题。目前主流的图像生成对抗网络Pix2Pix和Cycle-consistency是医学图像生成的两种主要模式,这类方法要求不同MRI序列数据配对出现,难以处理存在缺失的数据,此外,该类方法往往关注整幅图像的生成质量,缺少对疾病诊断更有价值的病灶区域的生成质量的监控。针对以上问题,该文受配准网络(RegGAN)自适应对准图像空间分布的启发,设计了一种新的基于特征增强的双注意力配准生成对抗网络DA-RegGAN。该网络在生成器中引入卷积注意力模块,使网络更注重病灶的学习;在判别器中添加梯度正则化约束,主要解决网络训练不稳定容易出现模式崩溃的现象,使网络生成包含更清晰的病灶细节全局图。该文在1697幅乳腺数据上开展消融实验、不同图像生成算法间的对比实验、肿瘤分类实验,进一步验证了方法的有效性。与原始RegGAN比,全局图像生成质量和局部病灶图像生成质量均得到提升,局部图像质量较原始PSNR提升了0.518,SSIM提升了0.021;全局图像质量较原始PSNR提升了0.584,SSIM提升了0.020。
