定义域

• Fractal image compression coding is focused attention upon by researchers for it ' s good quality of high compression ration , resolution irrelevancy and fast decoding . but it ca n ' t be put into practice for the matching search of domain and range is too difficult and the coding time is too long
  分形图像压缩编码以其高压缩比、分辨率无关性、快速解码等优越特性而引起世人瞩目，但却常因为庞大的定义域计算和烦琐的定义域值域匹配搜索而使编码时间过长，从而影响了其实用性。
• Conclusion r1 represent pixel - value of original image range block , r represent mean - value of original image range block , d represent mean - value of original image domain block , d1 represent pixel - value of resumptive image domain block , d represent mean - value of resumptive image domain block . superior perfermance of resumptive image range block is obtained as compared to conventional creative function by one iteration , that is ,
  ) ， d _ i ( i = 1 ， 2 ， … ， n )分别为某一恢复图像定义域块的均值和每一像素的像素值，我们用传统的和改进的生成函数分别进行一次迭代，则用改进的生成函数进行迭代的恢复图像每一值域块的效果较好，即：
• ( 3 ) for a kind of general discrete nonlinear system , a new scheme of fuzzy adaptive controller with globally stability is proposed , based on new parameter adaptive law of the system . owing to no need of the assumptions " x falling in a compact set " or " the base function being persistence excitation " which are difficult to be gotten and verified in reality , this result precedes the former research work
  ( 3 )本文在没有通常采用的，但在实际中难以获得和验证的“ f ( x )的定义域在紧集中”或“模糊基函数满足持续激励”条件下，针对一类一般的离散非线性系统，基于新的系统参数自适应律，给出了一种离散系统自适应模糊控制器的设计方法，证明了算法的全局稳定性
• However , there ' s a especially unsatisfying problem in this method : too long encoding time , mainly because of the considerable number of domain blocks to compare with for each range block in encoding phase , which , in fact , prevent fractal image compression from becoming a practical method for image compression , hence fast encoding has become a hot issue in fractal image compression
  但是，这种方法存在一个最大的问题：编码时间过长，主要是因为编码时定义域块的搜索量非常可观。这实际上已成为了该方法走向高效能实用化的最主要障碍，因此分形编码加速方法已成为了近些年来分形压缩的一个研究热点。
• There are many faults in the chaotic optimization algorithm . to solve these problems , a new method named " bisection - interpolation approach " is put forward . it has numerous advantages such as ergodicity , uniform distribution , not sensitive to the change of initial value , not sensitive to the defining range of variable , not requiring the continuation and not requiring differential of the optimized object
  该算法和混饨一样具有遍历性的特点，且变量均匀分布于定义域，对函数的定义域变化和初值的选定都不敏感，同样也不需要函数连续、可微，对优化对象几乎没有特别要求，从而避兔混池优化算法的缺点。
• The search space is divided into many small areas , and each area is given a certain pheromone value . according to the state transition rules , the artificial ants move to the next solution which is generated randomly or calculated by particle swarm optimization . local search strategy is also added into psaco so that the search speed and precision is enhanced
  该算法首先将连续对象定义域平均分成许多边缘相互重叠的小区域,区域的稠密程度决定了算法解的精度,每个区域赋予一定的信息素值;蚂蚁根据状态转移规则在随机生成的可行解与利用微粒群算法得出的可行解之间选择下一步要去的位置;引入局部寻优策略,加强近似最优解邻域内的局部搜索,提高搜索速度和精度。
• On the whole , that the dissertation contribute to the philosophy of technology embody four aspects as follow : extending the hermeneutic characteristics of dasein as techne - being ; enriching the meaning of text within the philosophical hermeneutics ; standing out the fact that , to great extent , the technology belongs to the humanities
  本文的理论创新之处主要在于：拓展了此在技术存在的解释学意义；充实了哲学解释学关于“本文”的定义域；突出了技术的人文科学特性；强化了意向性在技术哲学研究中的作用。