In recent study the bank of real square integrable functions that have nonlinear phases and admit a well-behaved Hilbert transform has been constructed for adaptive representation of nonlinear signals. We first s...In recent study the bank of real square integrable functions that have nonlinear phases and admit a well-behaved Hilbert transform has been constructed for adaptive representation of nonlinear signals. We first show in this paper that the available basic functions are adequate for establishing an ideal adaptive decomposition algorithm. However, we also point out that the best approximation algorithm, which is a common strategy in decomposing a function into a sum of functions in a prescribed class of basis functions, should not be considered as a candidate for the ideal algorithm.展开更多
New objects characterizing the structure of complex linear transformations areintroduced. These new objects yield a new result for the decomposition of complexvector spaces relative to complex lrnear transformations a...New objects characterizing the structure of complex linear transformations areintroduced. These new objects yield a new result for the decomposition of complexvector spaces relative to complex lrnear transformations and provide all Jordan basesby which the Jordan canonical form is constructed. Accordingly, they can result in thecelebrated Jordan theorem and the third decomposition theorem of space directly. and,moreover, they can give a new deep insight into the exquisite and subtle structure ofthe Jordan form. The latter indicates that the Jordan canonical form of a complexlinear transformation is an invariant structure associated with double arbitrary. choices.展开更多
EVA (乙烯-醋酸乙烯酯共聚物)凭借优异的黏结、保护及光学性能成为晶硅光伏组件封装的核心材料,但其与玻璃、电池片、背板间的牢固黏结及稳定化学特性,也使得在组件回收时难以高效分离去除,成为光伏组件绿色回收体系构建中的关键挑战。...EVA (乙烯-醋酸乙烯酯共聚物)凭借优异的黏结、保护及光学性能成为晶硅光伏组件封装的核心材料,但其与玻璃、电池片、背板间的牢固黏结及稳定化学特性,也使得在组件回收时难以高效分离去除,成为光伏组件绿色回收体系构建中的关键挑战。为此,梳理了晶硅光伏组件的结构及EVA胶膜性质,介绍了热解法、化学溶胀法及机械去除法3种EVA去除技术。结果显示:热解法是直接消除EVA实现分层分离最有效的方法,但加热过程中产生废气,污染环境;化学溶胀法是一种很有前途的分层分离方法,但所使用的溶剂大多有毒;机械去除法操作简单,但无法实现不同层的充分分离。3种方法各自存在不足,因此研发高精度分离设备、深化研究绿色溶剂热法、开发耦合工艺技术是未来的重点研究方向。展开更多
基金The NSF(11426113)of Chinathe Science and Technology Research Project(2014161,2014163)of Jilin Provincial Department of Education of Chinathe Project(20160520110JH)of Science and Technology Development Plan for Jilin Provincial
文摘In recent study the bank of real square integrable functions that have nonlinear phases and admit a well-behaved Hilbert transform has been constructed for adaptive representation of nonlinear signals. We first show in this paper that the available basic functions are adequate for establishing an ideal adaptive decomposition algorithm. However, we also point out that the best approximation algorithm, which is a common strategy in decomposing a function into a sum of functions in a prescribed class of basis functions, should not be considered as a candidate for the ideal algorithm.
文摘New objects characterizing the structure of complex linear transformations areintroduced. These new objects yield a new result for the decomposition of complexvector spaces relative to complex lrnear transformations and provide all Jordan basesby which the Jordan canonical form is constructed. Accordingly, they can result in thecelebrated Jordan theorem and the third decomposition theorem of space directly. and,moreover, they can give a new deep insight into the exquisite and subtle structure ofthe Jordan form. The latter indicates that the Jordan canonical form of a complexlinear transformation is an invariant structure associated with double arbitrary. choices.
