通常在物联网系统中使用XML作为数据交换格式,但由于物联网中大量存在对功耗要求较高的移动感知设备,所以本文基于EXI(Efficient XML Interchange Format)设计适合于物联网数据交换格式,并使用真实物联网数据验证其可行性和效率。实践...通常在物联网系统中使用XML作为数据交换格式,但由于物联网中大量存在对功耗要求较高的移动感知设备,所以本文基于EXI(Efficient XML Interchange Format)设计适合于物联网数据交换格式,并使用真实物联网数据验证其可行性和效率。实践发现使用EXI格式的物联网数据在效率上比之前XML格式的数据在传输效率有了很大的提高,更加适合物联网系统使用,如果在各大物联网系统统一推广使用,是现在解决不同行业物联网系统信息孤岛问题的一个方案。展开更多
大型园区网络中存在大量的移动访问需求,智能移动设备在访问基于XML的Web服务时普遍面临传输时间及能量消耗大的问题。提出了一种基于EXI(Efficient XML Interchange)的、适应智能移动终端资源受限特点的数据交换模型,采用UML模型进行...大型园区网络中存在大量的移动访问需求,智能移动设备在访问基于XML的Web服务时普遍面临传输时间及能量消耗大的问题。提出了一种基于EXI(Efficient XML Interchange)的、适应智能移动终端资源受限特点的数据交换模型,采用UML模型进行了形式化描述,分析了Web服务信息的EXI编码、解码过程;基于该模型开发了校园移动学习应用系统,实验结果表明经过EXI编码后的数据传输量和传输时间显著减少,服务调用时间及移动智能设备电量损耗亦无显著增加。展开更多
Several existence theorems were established for a nonlinear fourth-order two-point boundary value problem with second derivative by using Leray-Schauder fixed point theorem, equivalent norm and technique on system of ...Several existence theorems were established for a nonlinear fourth-order two-point boundary value problem with second derivative by using Leray-Schauder fixed point theorem, equivalent norm and technique on system of integral equations. The main conditions of our results are local. In other words, the existence of the solution can be determined by considering the height of the nonlinear term on a bounded set. This class of problems usually describes the equilibrium state of an elastic beam which is simply supported at both ends.展开更多
AIM: To explore the potential of contrast-enhanced computed tomography(CECT) using Exi Tron nano6000 for assessment of liver lesions in mouse models.METHODS: Three mouse models of liver lesions were used: bile duct li...AIM: To explore the potential of contrast-enhanced computed tomography(CECT) using Exi Tron nano6000 for assessment of liver lesions in mouse models.METHODS: Three mouse models of liver lesions were used: bile duct ligation(BDL),lipopolysaccharide(LPS)/D-galactosamine(D-Gal N),and alcohol.After injection with the contrast agent Exi Tron nano6000,the mice were scanned with micro-CT.Liver lesions were evaluated using CECT images,hematoxylin and eosin staining,and serum aminotransferase levels.Macrophage distribution in the injury models was shown by immunohistochemical staining of CD68.The in vitro studies measured the densities of RAW264.7 under different conditions by CECT.RESULTS: In the in vitro studies,CECT provided specific and strong contrast enhancement of liver in mice.CECT could present heterogeneous images anddensities of injured livers induced by BDL,LPS/D-Gal N,and alcohol.The liver histology and immunochemistry of CD68 demonstrated that both dilated biliary tracts and necrosis in the injured livers could lead to the heterogeneous distribution of macrophages.The in vitro study showed that the RAW264.7 cell masses had higher densities after LPS activation.CONCLUSION: Micro-CT with the contrast agent Exi Tron nano6000 is feasible for detecting various liver lesions by emphasizing the heterogeneous textures and densities of CECT images.展开更多
文摘通常在物联网系统中使用XML作为数据交换格式,但由于物联网中大量存在对功耗要求较高的移动感知设备,所以本文基于EXI(Efficient XML Interchange Format)设计适合于物联网数据交换格式,并使用真实物联网数据验证其可行性和效率。实践发现使用EXI格式的物联网数据在效率上比之前XML格式的数据在传输效率有了很大的提高,更加适合物联网系统使用,如果在各大物联网系统统一推广使用,是现在解决不同行业物联网系统信息孤岛问题的一个方案。
文摘大型园区网络中存在大量的移动访问需求,智能移动设备在访问基于XML的Web服务时普遍面临传输时间及能量消耗大的问题。提出了一种基于EXI(Efficient XML Interchange)的、适应智能移动终端资源受限特点的数据交换模型,采用UML模型进行了形式化描述,分析了Web服务信息的EXI编码、解码过程;基于该模型开发了校园移动学习应用系统,实验结果表明经过EXI编码后的数据传输量和传输时间显著减少,服务调用时间及移动智能设备电量损耗亦无显著增加。
文摘Several existence theorems were established for a nonlinear fourth-order two-point boundary value problem with second derivative by using Leray-Schauder fixed point theorem, equivalent norm and technique on system of integral equations. The main conditions of our results are local. In other words, the existence of the solution can be determined by considering the height of the nonlinear term on a bounded set. This class of problems usually describes the equilibrium state of an elastic beam which is simply supported at both ends.
基金Supported by National Natural Science Fund,No.81270558
文摘AIM: To explore the potential of contrast-enhanced computed tomography(CECT) using Exi Tron nano6000 for assessment of liver lesions in mouse models.METHODS: Three mouse models of liver lesions were used: bile duct ligation(BDL),lipopolysaccharide(LPS)/D-galactosamine(D-Gal N),and alcohol.After injection with the contrast agent Exi Tron nano6000,the mice were scanned with micro-CT.Liver lesions were evaluated using CECT images,hematoxylin and eosin staining,and serum aminotransferase levels.Macrophage distribution in the injury models was shown by immunohistochemical staining of CD68.The in vitro studies measured the densities of RAW264.7 under different conditions by CECT.RESULTS: In the in vitro studies,CECT provided specific and strong contrast enhancement of liver in mice.CECT could present heterogeneous images anddensities of injured livers induced by BDL,LPS/D-Gal N,and alcohol.The liver histology and immunochemistry of CD68 demonstrated that both dilated biliary tracts and necrosis in the injured livers could lead to the heterogeneous distribution of macrophages.The in vitro study showed that the RAW264.7 cell masses had higher densities after LPS activation.CONCLUSION: Micro-CT with the contrast agent Exi Tron nano6000 is feasible for detecting various liver lesions by emphasizing the heterogeneous textures and densities of CECT images.
