Toarcian claystone such as that of the Callovo-Oxfordian is a qualified multiphase material. The claystone samples tested in this study are composed of four main mineral phases: silicates(clay minerals, quartz,feldspa...Toarcian claystone such as that of the Callovo-Oxfordian is a qualified multiphase material. The claystone samples tested in this study are composed of four main mineral phases: silicates(clay minerals, quartz,feldspars, micas)(z86%), sulphides(pyrite)(z3%), carbonates(calcite, dolomite)(z10%) and organic kerogen(z1%). Three sets of measurements of the modulus of deformability were compared as determined in(i) nanoindentation tests with a constant indentation depth of 2 mm,(ii) micro-indentation tests with a constant indentation depth of 20 mm, and(iii) meso-compression tests with a constant displacement of 200 mm. These three experimental methods have already been validated in earlier studies. The main objective of this study is to demonstrate the influence of the scaling effect on the modulus of deformability of the material. Different frequency distributions of the modulus of deformability were obtained at the different sample scales:(i) in nano-indentation tests, the distribution was spread between 15 GPa and 90 GPa and contained one peak at34 GPa and another at 51 GPa;(ii) in the micro-indentation tests, the distribution was spread between 25 GPa and 60 GPa and displayed peaks at 26 GPa and 37 GPa; and(iii) in the meso-compression tests, a narrow frequency distribution was obtained, ranging from 25 GPa to 50 GPa and with a maximum at around 35 GPa.展开更多
The dynamic scaling behaviour of late-stage phase separation and coarsening mechanisms of L12 and D022 in Ni75AlxV25-x （3 ≤ x ≤ 10, at.%） alloys are studied using the microscopic phase-field dynamic model. The mic...The dynamic scaling behaviour of late-stage phase separation and coarsening mechanisms of L12 and D022 in Ni75AlxV25-x （3 ≤ x ≤ 10, at.%） alloys are studied using the microscopic phase-field dynamic model. The microelaso ticity field is incorporated into the diffusion dynamic model. The results show the morphology and coarsening dynamics being greatly changed by the elastic interactions among different precipitates, the particles aligning along the dominant directions, the average domain size （ADS） of L12 and D022 deviating from the exponent of temporal power-law, and the growth slowing down due to the increasing of elastic interactions. The dynamic scaling regime of late-stage coarsening of the precipitates is attained. Thus the scaling behaviour of structure function is also applicable for elastic interaction systems. It is also found that the variations of ADS and scaling function depend on the volume fraction of precipitates.展开更多
随着云技术的不断发展和普及,为了更好地利用云平台的优点和特性,云原生应用服务不断涌现,如何利用云平台的特性来服务软件设计和开发成为了难题,例如如何利用云平台的弹性伸缩特性。云原生目前主流的容器编排技术Kubernetes支持自动伸...随着云技术的不断发展和普及,为了更好地利用云平台的优点和特性,云原生应用服务不断涌现,如何利用云平台的特性来服务软件设计和开发成为了难题,例如如何利用云平台的弹性伸缩特性。云原生目前主流的容器编排技术Kubernetes支持自动伸缩,却存在一些需要针对具体情况进行优化改进的问题。本文主要针对使用Kubernetes编排的5G核心网网元PCF(Policy Control Function)的水平自动伸缩进行研究,通过基于自定义的负载数据(CPU使用率、内存使用率、交易量、带宽使用率)统计,根据历史负载数据使用LSTM来预测未来的负载,并设计了一种基于预测负载的可行的弹性伸缩算法,从而提出一种提前感知的、弹性的、不影响业务的弹性伸缩方法,并进行了大量的实验和统计,来论证方法的可行性和正确性。展开更多
文摘Toarcian claystone such as that of the Callovo-Oxfordian is a qualified multiphase material. The claystone samples tested in this study are composed of four main mineral phases: silicates(clay minerals, quartz,feldspars, micas)(z86%), sulphides(pyrite)(z3%), carbonates(calcite, dolomite)(z10%) and organic kerogen(z1%). Three sets of measurements of the modulus of deformability were compared as determined in(i) nanoindentation tests with a constant indentation depth of 2 mm,(ii) micro-indentation tests with a constant indentation depth of 20 mm, and(iii) meso-compression tests with a constant displacement of 200 mm. These three experimental methods have already been validated in earlier studies. The main objective of this study is to demonstrate the influence of the scaling effect on the modulus of deformability of the material. Different frequency distributions of the modulus of deformability were obtained at the different sample scales:(i) in nano-indentation tests, the distribution was spread between 15 GPa and 90 GPa and contained one peak at34 GPa and another at 51 GPa;(ii) in the micro-indentation tests, the distribution was spread between 25 GPa and 60 GPa and displayed peaks at 26 GPa and 37 GPa; and(iii) in the meso-compression tests, a narrow frequency distribution was obtained, ranging from 25 GPa to 50 GPa and with a maximum at around 35 GPa.
基金Project supported by the National Natural Science Foundation of China （Grant No 50071046） and the National High Technology and Development Program of China （Grant No 2002AA331050）, and the Doctorate Foundation of Northwestern Polytechnical University of China （Grant No CX200507）.
文摘The dynamic scaling behaviour of late-stage phase separation and coarsening mechanisms of L12 and D022 in Ni75AlxV25-x （3 ≤ x ≤ 10, at.%） alloys are studied using the microscopic phase-field dynamic model. The microelaso ticity field is incorporated into the diffusion dynamic model. The results show the morphology and coarsening dynamics being greatly changed by the elastic interactions among different precipitates, the particles aligning along the dominant directions, the average domain size （ADS） of L12 and D022 deviating from the exponent of temporal power-law, and the growth slowing down due to the increasing of elastic interactions. The dynamic scaling regime of late-stage coarsening of the precipitates is attained. Thus the scaling behaviour of structure function is also applicable for elastic interaction systems. It is also found that the variations of ADS and scaling function depend on the volume fraction of precipitates.
文摘随着云技术的不断发展和普及,为了更好地利用云平台的优点和特性,云原生应用服务不断涌现,如何利用云平台的特性来服务软件设计和开发成为了难题,例如如何利用云平台的弹性伸缩特性。云原生目前主流的容器编排技术Kubernetes支持自动伸缩,却存在一些需要针对具体情况进行优化改进的问题。本文主要针对使用Kubernetes编排的5G核心网网元PCF(Policy Control Function)的水平自动伸缩进行研究,通过基于自定义的负载数据(CPU使用率、内存使用率、交易量、带宽使用率)统计,根据历史负载数据使用LSTM来预测未来的负载,并设计了一种基于预测负载的可行的弹性伸缩算法,从而提出一种提前感知的、弹性的、不影响业务的弹性伸缩方法,并进行了大量的实验和统计,来论证方法的可行性和正确性。
