介绍了系统研发平台,将OpenGL与Direct3D作为三维程序开发工具,为了提高真实度,将3ds MAX 7.0软件作为三维模型的制作工具。通过硬件抽象层HAL和硬件仿真层HEL实现Direct3D的驱动,对室内软装三维场景进行制作。依据室内软装场景元素给...介绍了系统研发平台,将OpenGL与Direct3D作为三维程序开发工具,为了提高真实度,将3ds MAX 7.0软件作为三维模型的制作工具。通过硬件抽象层HAL和硬件仿真层HEL实现Direct3D的驱动,对室内软装三维场景进行制作。依据室内软装场景元素给出代理区域,将代理区域合理布局问题看作确定目标空间最优分布位置问题。依据室内装饰学获取先验知识,与功能需求相结合确定约束条件,形成约束代价函数,通过求解函数实现室内软装布局。实验结果表明该系统设计的室内软装真实感强,系统缺陷少。展开更多
A West Kentucky mine operation in No. 11 seam encountered floor heave, due to the localized increase in the thickness of the fireclay mine floor. Floor heave has overridden seals installed in two mined out panels. The...A West Kentucky mine operation in No. 11 seam encountered floor heave, due to the localized increase in the thickness of the fireclay mine floor. Floor heave has overridden seals installed in two mined out panels. The third seal's location was planned for isolating that area from the Mains. A plan of support has been developed to prevent repetition of the floor heave and related problems outby the seals. The applied ground control measures were successful. An attempt of a 3D numerical modeling was made; thus, it would match the observed behavior of the mine floor and could be used as a design tool in similar conditions. The paper describes sequence of events, an applied mitigation ground control system, and the first stage of numerical modeling.展开更多
The iterated function system with two element digit set is the simplest case and the most important case in the study of self affine measures.The one dimensional case corresponds to the Bernoulli convolution whose spe...The iterated function system with two element digit set is the simplest case and the most important case in the study of self affine measures.The one dimensional case corresponds to the Bernoulli convolution whose spectral property is understandable.The higher dimensional analogue is not known,for which two conjectures about the spectrality and the non spectrality remain open.In the present paper,we consider the spectrality and non spectrality of planar self affine measures with two element digit set.We give a method to deal with the two dimensional case,and clarify the spectrality and non spectrality of a class of planar self affine measures.The result here provides some supportive evidence to the two related conjectures.展开更多
文摘介绍了系统研发平台,将OpenGL与Direct3D作为三维程序开发工具,为了提高真实度,将3ds MAX 7.0软件作为三维模型的制作工具。通过硬件抽象层HAL和硬件仿真层HEL实现Direct3D的驱动,对室内软装三维场景进行制作。依据室内软装场景元素给出代理区域,将代理区域合理布局问题看作确定目标空间最优分布位置问题。依据室内装饰学获取先验知识,与功能需求相结合确定约束条件,形成约束代价函数,通过求解函数实现室内软装布局。实验结果表明该系统设计的室内软装真实感强,系统缺陷少。
文摘A West Kentucky mine operation in No. 11 seam encountered floor heave, due to the localized increase in the thickness of the fireclay mine floor. Floor heave has overridden seals installed in two mined out panels. The third seal's location was planned for isolating that area from the Mains. A plan of support has been developed to prevent repetition of the floor heave and related problems outby the seals. The applied ground control measures were successful. An attempt of a 3D numerical modeling was made; thus, it would match the observed behavior of the mine floor and could be used as a design tool in similar conditions. The paper describes sequence of events, an applied mitigation ground control system, and the first stage of numerical modeling.
基金supported by the Key Project of Chinese Ministry of Education(Grant No. 108117)National Natural Science Foundation of China (Grant No. 10871123,61071066,11171201)
文摘The iterated function system with two element digit set is the simplest case and the most important case in the study of self affine measures.The one dimensional case corresponds to the Bernoulli convolution whose spectral property is understandable.The higher dimensional analogue is not known,for which two conjectures about the spectrality and the non spectrality remain open.In the present paper,we consider the spectrality and non spectrality of planar self affine measures with two element digit set.We give a method to deal with the two dimensional case,and clarify the spectrality and non spectrality of a class of planar self affine measures.The result here provides some supportive evidence to the two related conjectures.