Abstract Using the global Moran's I and other statistical methods, spatio-temporal variation characteristics of extreme precipitation over Dongting Lake basin are studied based on daily at national meteorological stations from 1960 to 2016. The results show that spatial distribution is very uneven. areas with maximum located in Lishui River basin, middle reaches Zishui lower Yuanshui River. The...

OF DISSERTATION

To deepen our understanding of object recognition, it is critical to understand the nature of transformations that occur in intermediate stages of processing in the ventral visual pathway, such as area V4. Neurons in V4 are selective to local features of global shape, such as extended contours. Previously, we found that V4 neurons selective for curved elements exhibit a high degree of spatial v...

Adaptive radiation can be strongly influenced by interspecific competition for resources, which can lead to diverse outcomes ranging from competitive exclusion to character displacement. In each case, sympatric species are expected to evolve into distinct ecological niches, such as different food types, yet this expectation is not always met when such species are examined in nature. The most co...

We study p-adic multiresolution analyses (MRAs). A complete characterisation of test functions generating MRAs (scaling functions) is given. We prove that only 1-periodic test functions may be taken as orthogonal scaling functions. We also suggest a method for the construction of wavelet functions and prove that any wavelet function generates a p-adic wavelet frame.

Despite heated debates over the safety of genetically modified (GM) food, GM crops have been expanding rapidly. Much research has focused on the expansion of GM crops. However, the spatiotemporal dynamics of non-genetically modified (non-GM) crops are not clear, although they may have significant environmental and agronomic impacts and important policy implications. To understand the dynamics o...

There are many problems involved in trying to model space dynamically in a computer. Since it is impractical to preserve the states of all possible locations in space and time, the preservation of changes of state is a feasible alternative. A (wy preliminary) taxonomy of possible types of maps is given, along with the state-change conditions that should be preserved. Traditional static maps are...

Urban green spaces encourage outdoor activity and social communication that contribute to the health of local residents. Examining the relationship between the use of urban green spaces and factors influencing their utilization can provide essential references for green space site selection in urban planning. In contrast to previous studies that focused on internal factors, this study highlight...