نتایج جستجو برای: spatiotemporal pattern
تعداد نتایج: 373623 فیلتر نتایج به سال:
Bio-cultural landscapes are characterized by anthropogenic pattern features, of which the measurement constitutes a key step in landscape analysis. Metrics and strategies for this measurement of anthropogenic patterns and their dynamics are discussed, considering the pattern/process paradigm, the patchcorridor-matrix model and the complementarity of landscape composition and configuration as co...
Soil conservation (SC) is an important ecosystem regulating service. At present, methods for SC mapping to identify priority areas are primarily based on empirical soil erosion models, such as the RUSLE (Revised Universal Soil Loss Equation) based model. However, the parameters of the empirical soil conservation model are based on long-term observations of field experiments at small spatial sca...
It is highly desired to detect the DDoS flooding attacks at an early stage in order to launch effective countermeasures timely. We have developed a distributed change-point detection scheme to detect flooding type DDoS attacks over multiple network domains. The approach is to monitor the spatiotemporal pattern of the attack traffic. We have simulated the new defense system on the DETER testbed....
This paper is concerned with the phonetic correlates of main stress in Italian and presents the analysis of the duration of syllabic nuclei in connected speech and in different speaking styles. Spontaneous dialogues are analysed basing on earlier works on pre-planned speech which investigated both [+stress] / [-stress] and stress/accent contrasts in Italian. The aim of this study is to examine ...
Recently, land use and cover change is recognized as a one of major drivers of global change. Consequently, an updated and accurate database concerning their distribution is essential for global change research. This study investigated a land use change based on change of temporal pattern which applied to the wavelet-filtered MODIS EVI from 2000 to 2009. The temporal pattern analysis was able t...
Recent experiments show that seeing lip movements may improve the detection of speech sounds embedded in noise. We show here that the “speech detection” benefit may result in a “speech identification” benefit different from lipreading per se. The experimental trick consists in dubbing the same lip gesture on a number of visually similar but auditorily different configurations, e.g. [y u ty tu k...
As the capital of China, Beijing has experienced a continued and rapid urbanization process in the past few decades. One of the key environmental impacts of rapid urbanization is the effect of urban heat island (UHI). The objective of this study was to estimate the urbanization indexes of Beijing from 1992 to 2013 based on the stable nighttime light (NTL) data derived from the Defense Meteorolo...
Space-time events with coordinates (xi, yi, ti) are monitored continually. The events' density varies largely in both, space and time. At a certain unknown instant τ , a relatively small cluster of increased intensity starts to emerge. Its location is also unknown. The aim is to let make an alarm go off as soon as possible after τ but avoiding it to go off unnecessarily. In this paper we propos...
The belief that relationships between explanatory variables and a response variable in a regression model may vary within a study area has lead to the development of Bayesian regression models that allow for spatially varying coefficients (Gelfand et al., 2003). In the typical application of these spatially varying coefficient process (SVCP) models, marginal inference on the spatial pattern of ...
A new electronic model of Pulse-Coupled Neural Network is proposed. This model exhibits very interesting features such as: segmentation, feature extraction, orientation independence and noise tolerance. Segmentation means that the output pattern depends strongly on the spatial location of the pixels in respect to one other. Feature extraction means that if the input image includes several patte...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید