The traffic networks reflect the pulse and structure of a city and shows some dynamic characteristic. Previous research in mining structure from networks mostly focus on static networks and fail to exploit the temporal patterns. In this paper, we aim to solve the problem of discovering the urban spatio-temporal structure from time-evolving traffic networks. We model the time-evolving traffic ne...

This paper discusses methods for character extraction based on statistical and structural features of gray levels, and proposes a dynamic local contrast accommodating line width. Precision locating of character groups is realized by exploiting horizontal projection and character arrangements of binary images along horizontal and vertical directions respectively. Also discussed is the method for...

The strength of biotic interactions between native and invasive species is a key component of invasive species impact, but often is not quantified explicitly. We measured biotic interaction strengths between an invasive and a native endemic snail species in 2 streams in the western United States. The invasive freshwater New Zealand mudsnail, Potamopyrgus antipodarum, was the dominant snail in a...

Introduction At high field strengths, shimming becomes increasingly more difficult and important since susceptibility induced B0 inhomogeneities increase. Exploiting up to 3 rd order shim coils on the system, a high number of degrees of freedom are available to generate a more homogeneous B0 field. In MR spectroscopy excellent shimming is an important factor for acquiring high quality data sinc...

This paper addresses the problem of speaker-dependent isolate digits recognition using sole visual information. We employ intensity transformation and spatial filter to estimate the minimum enclosing rectangle of mouth in each frame. Thus, for each utterance, we can obtain two vectors composed of width and height of mouth, respectively. Then, we propose an approach to recognize the speech based...

some macroinvertebrate indices of stream health have been identified as most useful and efficacious. management decisions can be made with greater awareness.the objectives of this study were to assess the biological water of the hazar river using macroinvertebrates.the haraz river is one of the best freshwater ecosystems in the mazandaran province located in the north of iran.to assess the macr...