高光谱成像技术的飞速发展给非侵入式医学成像带来新的契机,但高光谱医学图像具有高维度、高冗余以及“图谱合一”的特点,亟需针对上述特点设计智能诊断算法。近年来,Transformer已经在高光谱医学图像处理领域得到广泛应用。然而,不同...高光谱成像技术的飞速发展给非侵入式医学成像带来新的契机,但高光谱医学图像具有高维度、高冗余以及“图谱合一”的特点,亟需针对上述特点设计智能诊断算法。近年来,Transformer已经在高光谱医学图像处理领域得到广泛应用。然而,不同仪器设备、不同采集操作所获得的高光谱医学图像差异较大,这给现有Transformer诊断模型的实际应用带来了巨大挑战。针对上述问题,本文提出了一种空-谱自注意力Transformer(S3AT),自适应挖掘像素与像素间、波段与波段间的内蕴联系,并在分类阶段融合多个视野下的预测结果。首先,在Transformer编码器中,设计一种空-谱自注意力机制,获取不同视野下高光谱图像上的关键空间信息和重要波段,并将不同视野下所获得的空-谱自注意力进行融合。其次,在模型分类阶段,将不同视野下的预测结果根据可学习权重进行加权融合,对图像进行综合预测。在In-vivo Human Brain和BloodCell HSI两个数据集上,本文算法总体分类精度分别达到82.25%和91.74%。实验结果表明,所提出的算法有效改善高光谱医学图像分类性能。展开更多
糖尿病患者发生进食障碍风险增加,许多国家与地区编制了进食障碍的评估工具,并用于评估糖尿病患者的进食障碍,评价系统较为完善。而我国评估量表尚处于起步阶段,大多是对国外量表的修订和汉化。本文主要介绍国际上常用的用于糖尿病患者...糖尿病患者发生进食障碍风险增加,许多国家与地区编制了进食障碍的评估工具,并用于评估糖尿病患者的进食障碍,评价系统较为完善。而我国评估量表尚处于起步阶段,大多是对国外量表的修订和汉化。本文主要介绍国际上常用的用于糖尿病患者进食障碍的评估工具,为我国糖尿病患者进食障碍评估工具的选择和开发提供参考。Diabetic patients are at increased risk of eating disorders, and many countries and regions have compiled assessment tools for eating disorders and used them to assess eating disorders in diabetic patients, with a more complete evaluation system. In contrast, assessment scales in China are still in their infancy, and most of them are revisions and Chineseization of foreign scales. This paper mainly introduces the assessment tools commonly used internationally for eating disorders in diabetic patients, and provides reference for the selection and development of assessment tools for eating disorders in diabetic patients in China.展开更多
A new method has recently developed,the solution sampling method(SMM),to quantify the binary rubber blends of NR/BR by pyrolysis/gas chromatography/mass spectrometry(PY/GC/MS).The rubbers were swelled in the cyclohexa...A new method has recently developed,the solution sampling method(SMM),to quantify the binary rubber blends of NR/BR by pyrolysis/gas chromatography/mass spectrometry(PY/GC/MS).The rubbers were swelled in the cyclohexane,using the hydrogen peroxide solution to destroy the cross-linked structure of the rubbers and then the rubbers can be sloved in the cyclohexane.The rubber solution was applied to the spiral section of the injector.The solvent was evaporated depositing the rubber on the spiral section,and the rubber was prolyzed at 550℃.Then calculate the weight percentage by the characteristic peak area ratio.One test rubber,NR/BR where the weight percentage of NR is 50% was calculated.The error was 5.64%.展开更多
A thermal desorption method for analysis of the volatile components on carbon particles,which were produced by the combustion of diesel oil,has been developed.The collection equipment of carbon particles was designed ...A thermal desorption method for analysis of the volatile components on carbon particles,which were produced by the combustion of diesel oil,has been developed.The collection equipment of carbon particles was designed and the pyrolysis instrument was used as the thermal desorption equipment.The collected carbon particles were injected into the pyrolysis instrument and desorbed at the temperature of 700 ℃.All the volatile components were analyzed by gas chromatography-mass spectrometry(GC-MS).The results showed that the volatile component on carbon particle could be rapidly analyzed.The method provided a guidance to the further research of the burning behaviors of the diesel oil.展开更多
文摘高光谱成像技术的飞速发展给非侵入式医学成像带来新的契机,但高光谱医学图像具有高维度、高冗余以及“图谱合一”的特点,亟需针对上述特点设计智能诊断算法。近年来,Transformer已经在高光谱医学图像处理领域得到广泛应用。然而,不同仪器设备、不同采集操作所获得的高光谱医学图像差异较大,这给现有Transformer诊断模型的实际应用带来了巨大挑战。针对上述问题,本文提出了一种空-谱自注意力Transformer(S3AT),自适应挖掘像素与像素间、波段与波段间的内蕴联系,并在分类阶段融合多个视野下的预测结果。首先,在Transformer编码器中,设计一种空-谱自注意力机制,获取不同视野下高光谱图像上的关键空间信息和重要波段,并将不同视野下所获得的空-谱自注意力进行融合。其次,在模型分类阶段,将不同视野下的预测结果根据可学习权重进行加权融合,对图像进行综合预测。在In-vivo Human Brain和BloodCell HSI两个数据集上,本文算法总体分类精度分别达到82.25%和91.74%。实验结果表明,所提出的算法有效改善高光谱医学图像分类性能。
文摘糖尿病患者发生进食障碍风险增加,许多国家与地区编制了进食障碍的评估工具,并用于评估糖尿病患者的进食障碍,评价系统较为完善。而我国评估量表尚处于起步阶段,大多是对国外量表的修订和汉化。本文主要介绍国际上常用的用于糖尿病患者进食障碍的评估工具,为我国糖尿病患者进食障碍评估工具的选择和开发提供参考。Diabetic patients are at increased risk of eating disorders, and many countries and regions have compiled assessment tools for eating disorders and used them to assess eating disorders in diabetic patients, with a more complete evaluation system. In contrast, assessment scales in China are still in their infancy, and most of them are revisions and Chineseization of foreign scales. This paper mainly introduces the assessment tools commonly used internationally for eating disorders in diabetic patients, and provides reference for the selection and development of assessment tools for eating disorders in diabetic patients in China.
文摘A new method has recently developed,the solution sampling method(SMM),to quantify the binary rubber blends of NR/BR by pyrolysis/gas chromatography/mass spectrometry(PY/GC/MS).The rubbers were swelled in the cyclohexane,using the hydrogen peroxide solution to destroy the cross-linked structure of the rubbers and then the rubbers can be sloved in the cyclohexane.The rubber solution was applied to the spiral section of the injector.The solvent was evaporated depositing the rubber on the spiral section,and the rubber was prolyzed at 550℃.Then calculate the weight percentage by the characteristic peak area ratio.One test rubber,NR/BR where the weight percentage of NR is 50% was calculated.The error was 5.64%.
文摘A thermal desorption method for analysis of the volatile components on carbon particles,which were produced by the combustion of diesel oil,has been developed.The collection equipment of carbon particles was designed and the pyrolysis instrument was used as the thermal desorption equipment.The collected carbon particles were injected into the pyrolysis instrument and desorbed at the temperature of 700 ℃.All the volatile components were analyzed by gas chromatography-mass spectrometry(GC-MS).The results showed that the volatile component on carbon particle could be rapidly analyzed.The method provided a guidance to the further research of the burning behaviors of the diesel oil.
