共查询到20条相似文献，搜索用时 406 毫秒
1.
ＡＲａｎｄｏｍＭｕｌｔｉＡｃｃｅｓｓＭｅｔｈｏｄｆｏｒＤａｔａＳｅｒｖｉｃｅｓｉｎＣＤＭＡＣｅｌｕｌａｒＳｙｓｔｅｍＬｉＺｈｅｎ（李振）ＹｏｕＸｉａｏｈｕ（尤肖虎）（ＮａｔｉｏｎａｌＭｏｂｉｌｅＣｏｍｍｕｎｉｃａｔｉｏｎｓＲｅｓｅａｒｃｈＬａｂｏｒ... 相似文献
2.
Measurement of Mass Difusivity of Moist Porous Media under the Influence of Forced Convection at Sur
ＭｅａｓｕｒｅｍｅｎｔｏｆＭａｓＤｉｆｕｓｉｖｉｔｙｏｆＭｏｉｓｔＰｏｒｏｕｓＭｅｄｉａｕｎｄｅｒｔｈｅＩｎｆｌｕｅｎｃｅｏｆＦｏｒｃｅｄＣｏｎｖｅｃｔｉｏｎａｔＳｕｒｆａｃｅＧｕｉＫｅｔｉｎｇ（归柯庭）ＨａｎＪｉｔｉａｎ（韩吉田）ＳｈｉＭｉｎｇｈ... 相似文献
3.
ＡｎＩｎｔｅｒａｃｔｉｖｅＭｅｔｈｏｄｆｏｒＳｏｌｖｉｎｇＭｕｌｔｉｏｂｊｅｃｔｉｖｅＤｅｃｉｓｉｏｎＭａｋｉｎｇＰｒｏｂｌｅｍｓｗｉｔｈＩｎｔｅｇｅｒＶａｒｉａｂｌｅｓＷｕＱｉｎｇｌｉｅ（吴清烈）ＸｕＮａｎｒｏｎｇ（徐南荣）（ＳｃｈｏｏｌｏｆＥｃｏ... 相似文献
4.
ＳｏｍｅＲｅｍａｒｋｓｏｎＳｔａｔｉｏｎａｒｙＴｈｅｒｍｉｓｔｏｒＰｒｏｂｌｅｍＧｕａｎＰｉｎｇ（管平）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓａｎｄＭｅｃｈａｎｉｃｓ，ＳｏｕｔｈｅａｓｔＵｎｉｖｅｒｓｉｔｙ，Ｎａｎｊｉｎｇ２１００１８）Ｆ... 相似文献
5.
Wang QingWan Dejun Li Zigang 《东南大学学报》1996,(1)
ＤｙｎａｍｉｃＧｒａｐｈｉｃａｌＳｉｍｕｌａｔｉｏｎｏｆａＬａｒｇｅＳｃａｌｅＭｏｔｏｒＣｒａｎｅＣｈａｓｓｉｓＣｈｅｎＹｕｎｆｅｉａ（陈云飞）ＨｕａｎｇＸｉｓｈｉｂ（黄锡时）ＸｕＳｈａｎｇｘｉａｎａ（许尚贤）（ａＤｅｐａｒｔｍｅｎｔｏｆＭｅｃｈａｎ... 相似文献
6.
Tan Dingsheng 《上海大学学报(英文版)》1998,2(1):67-71
ＳｔｕｄｙｏｎＳｕｒｆａｃｅＭｏｄｉｆｉｃａｔｉｏｎｏｆＴｉｔａｎｉｕｍＤｉｏｘｉｄｅＵｓｉｎｇＰｏｌｙｍｅｔｈｙｌＭｅｔｈａｃｒｙｌａｔｅＴａｎＤｉｎｇｓｈｅｎｇ（ＳｈａｎｇｈａｉＵｎｉｖｅｒｓｉｔｙ）ＹａｎＮｉａｎｘｉＸｕｅＱｉｎｇ（Ｓｏｃｈｏｗ... 相似文献
7.
ＥｐｉｔａｘｉａｌＧｒｏｗｔｈｏｆＹＳＺａｓＢｕｆｅｒＬａｙｅｒｓｆｏｒＨｉｇｈＴｃＳｕｐｅｒｃｏｎｄｕｃｔｉｎｇＦｉｌｍｓｏｎＳｉＳｕｂｓｔｒａｔｅｓＱｉａｎＷｅｎｓｈｅｎｇ（钱文生）ＬｉｕＲｏｎｇ（刘融）ＷｅｉＴｏｎｇｌｉ（魏同立）（Ｍｉｌｒｏｅ... 相似文献
8.
ＳｏｌｖｉｎｇＬｉｎｅａｒＰｒｏｇｒａｍｍｉｎｇＰｒｏｂｌｅｍｓｖｉａＡｐｐｅｎｄｉｎｇａｎＥｌａｓｔｉｃＣｏｎｓｔｒａｉｎｔＰａｎＰｉｎｇｑｉ（潘平奇）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓａｎｄＭｅｃｈａｎｉｃｓ，ＳｏｕｔｈｅａｓｔＵｎ... 相似文献
9.
ＩｎｔｅｒｃｏｎｎｅｃｔｉｏｎｏｆＭＡＰａｎｄＢＩＴＢＵＳＢａｓｅｄｏｎＭＭＳＤｉｎｇＸｉｎｑｕａｎ（丁心泉）（ＤｅｐａｒｔｍｅｎｔｏｆＣｏｍｐｕｔｅｒＳｃｉｅｎｃｅａｎｄＥｎｇｉｎｅｅｒｉｎｇ，ＳｏｕｔｈｅａｓｔＵｎｉｖｅｒｓｉｔｙ，Ｎａｎｊｉｎ... 相似文献
10.
ＳｗｉｔｃｈｉｎｇＰｈｅｎｏｍｅｎａｏｆＣｕＴＣＮＱＩｎｄｕｃｅｄＭａｉｎｌｙｂｙｔｈｅＩｎｔｅｒａｃｔｉｏｎａｍｏｎｇＭｉｃｒｏｃｒｙｓｔａｌｉｎｅＧｒａｉｎｓＧｕＮｉｎｇａ１（顾宁）ＳｈｅｎｇＨａｏｙｉｎｇｂ（沈浩瀛）ＬｕＷｕａ１（鲁武）Ｐａｎ... 相似文献
11.
李敏 《湖州师范学院学报》2007,29(2):45-49
为获得绘制二维分形图的简单方法,利用Mathematica软件的数值计算功能、符号运算功能和图形程序设计功能,以简单的程序实现了迭代分形算法和逃逸时间算法,成功绘制了Von Koch曲线、分形树枝、Mandelbrot集等分形图,给出了相应的Mathematica源代码,体现了Mathematica软件在实现分形算法方面的优越性,并提出了绘制复杂分形图的新方法. 相似文献
12.
The flame structure of gasoline engine is complicated and has the characteristic of fractal geometry. A fractal combustion model was used to simulate the engine working cycle. Based on this model, the fractal dimension and laminar flame surface area of turbulent premixed flames were studied under different working conditions. The experimental system mainly includes an optical engine and a set of photography equipment used to shoot the images of turbulent flame of spark-ignition engine. The difference box-counting method was used to process 2D combustion images. In contrast to the experimental results, the computational results show that the fractal combustion model is an effective method of simulating the engine combustion process. The study provides a better understanding for flame structure and its propagation. 相似文献
13.
基于二维带限维尔斯特拉斯分形函数衍变建立的模拟粗糙面模型,通过计算机绘图模拟,验证了该模型能很好的模拟实际粗糙面.结论对于使用该模型进一步研究海平面,大气湍流等实际粗糙面的电磁波的传播、散射提供了佐证. 相似文献
14.
The space sheet for a solar array structure is large in dimension, and flexible to induce complex distortion. It is difficult to measure the distortion. A large-scale flexible test prototype system is built for sheet structure vibration monitoring based on the vibration information of the solar array in space. The system provides an intelligent test method for flexible space structure with embedded sensors and non-visualization reinstruction. Multiple fiber Bragg grating （FBG） sensors are packaged and embedded into the structure with spatial division multiplexing （SDM） and wavelength division multiplexing （WDM）. The sensor interrogator distinguishes wavelength shifts that can be turned into curvature of the curve. The structure shape is reconstructed based on the curvature information and the arc-length, and then displayed. The experiment shows that the system has a high FBG sensitivity. The reconstruction algorithm is fast with high precision. The system has great potential for use in health monitoring of the space sheet structure. 相似文献
15.
描述絮团分形结构的定量参数分维数可用沉降法、图像法等进行测量。本文提出了一种测量絮团分维数的新方法,即通过测量絮凝体系的表观粘度而获得絮团的分维数(文中名之为粘度分维数)。为此,将絮团依据其空间特征分成四类:分散的单体颗粒、线状絮团、面状絮团及体状絮团,类比说明体系粘度为分散相及各类絮团对体系粘度贡献的线性叠加。通过颗粒碰撞理论及絮团的绕流阻力分析殊途同归地得出了体系粘度与各类絮团分维数的数学模型。依据该模型,可以同时测量不同类型絮团的分维数,并使定量分析絮团的相对组成成为可能。 相似文献
16.
刘扬 《鹭江职业大学学报》2014,(5):46-50
提出一种信息论结合粒子群优化的贝叶斯网络结构学习算法,将约束最大信息熵作为最高评分函数,对网络结构进行复杂度约束,设计了粒子位置和速度向量的操作方法,解决单纯利用KL距离进行搜索的缺陷。在网络结构的搜索空间相对较大的情况下,该优化算法能在较短的时间内收敛,获得更准确的网络结构。仿真实验结果表明,该算法在时间和精度上都具有较好的效果。 相似文献
17.
Motion simulator usually appears the phenomenon of false cues and the workspace is limited in the process of washout. The proposed washout algorithm combines fuzzy logic control with the vestibular system to design the tilt coordination fuzzy adaptive filter, in order to minimize the vestibular sensory error below the human perception threshold. Owing to tilt coordination angular velocity limiter, the loss of low-pass acceleration must be compensated by the acceleration transform model. The translational channel decreases the possibility of the workspace beyond limitation and expands the scope of motion platform simulating input acceleration by using third-order filter. The simulation results show that the proposed algorithm can effectively overcome the phase retardation of classical washout algorithm, and then prevent the produce of false cues, decrease the displacement of motion platform simultaneously; in addition, white Gaussian noise simulates large variations in acceleration. The proposed washout algorithm can have maximal extreme value of acceleration and accurate simulating performance in general. It also proves that the proposed washout algorithm has a strong adaptability and reliability, which can effectively improve the dynamic fidelity for motion simulator. 相似文献
18.
连分数的展开式具有结构上的自相似性,部分商满足一定条件的连分数构成的集合是分形集,通过构造迭代映射的方法估算其Hausdorff维数. 相似文献
19.
基于关联维数的输油泵运行状态研究 总被引：1，自引：0，他引：1
给出关联维数的计算方法及参数的选取依据,研究了输油泵在不同状态下的关联维数,给出了获得其真实状态的关联维数方法。结果表明,关联维数可以作为识别输油泵运行状态的特征量。 相似文献
20.
Prior knowledge state is an important determinant in the future learning process of adult students. Research on the prior knowledge state has focused on its structure along a set of dimensions. In the theoretical part of this article a distinct approach towards the analysis of the prior knowledge state is outlined. This analysis is based on the idea of the ‘structure of knowledge’. This base is further exploited to define a set of dimensions that are helpful to construct ‘knowledge profiles’ by using different parameters along those dimensions. Two dimensions are distinguished: the behavioural dimension, consisting of the parameters know, insight and apply; the knowledge dimension, formed by the parameters concepts, relations, structures and methods. It is argued that the assessment of the prior knowledge state needs to be done by dedicated prior knowledge state tests. The relevance of using prior knowledge profiles is especially important in a context of independent, distance learning. Student groups that take courses within this context can be characterised as very heterogeneous (e.g. age, education, profession, interest and prior knowledge), but they often have to deal with fairly standardised instruction materials and learning environments. The view is defended that the determination of prior knowledge profiles can be helpful to enhance a student's learning process, to design more flexible learning environments and to provide instructional support. 相似文献