The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We investigate the generation of uncorrelated multichannel chaos by electrically heterodyning the chaotic microwave generated from a semiconductor laser. The feasibility of using heterodyned chaos for applications of MIMO chaos radar (MIMO CRADAR) is successfully demonstrated.
Demand for screen content videos that contain computer generated text and graphics is growing. They are very different from natural videos, because they include much sharper edge transitions and very repetitive patterns. On this type of material, the efficacy of the conventional discrete cosine transform (DCT) is questionable because it relies on the assumption that a Gauss-Markov model leads to a...
In this paper we address the problem of cognition (inference and decision) on data collected from a system which is characterized by a stochastic network topology. The decision problem is formulated as a data fusion problem and a data model that only requires stochastic network topology, marginal probability densities and pairwise correlations is proposed. Based on such model, we can mitigate the...
Owing to the great advent of sensor technology, the usage data of appliances in a house can be logged and collected easily today. However, it is a challenge for the residents to visualize how these appliances are used. Thus, mining algorithms are much needed to discover appliance usage patterns. Most previous studies on usage pattern discovery are mainly focused on analyzing the patterns of single...
To investigate the CT findings of gastrocolic ligament involved by acute pancreatitis(AP) and study the correlation between CT findings and CT Severity Index (CTSI) of AP. Methods: Seventy-nine patients with AP were retrospectively reviewed. Balthazar's CT classification of all the patients' was C grade or more. Emphasis was placed on the following findings: the CTSI, the thickness and density of...
Genre classification for musical documents is conventionally based on keywords, statistical features or low-level acoustic features. Such features are either lack of in-depth information of music content or incomprehensible for music professionals. This paper proposed a classification scheme based on the correlation analysis of the melodic patterns extracted from music documents. The extracted patterns...
This paper introduces the general framework of statistical information fusion on social network, which plays an important role on understanding the human interaction and cooperation in the society. On many existing information platforms on the social network, people's relationship affects their decision on both static and dynamic way. We consider the scenario that agents refer others decisions which...
Recently atmospheric nitrogen deposition was heavily increased and this would alter carbon cycling process in terrestrial ecosystems. We conducted greenhouse experiments with 8 sand plants under nutrient controlled (simulate the nitrogen deposition), then use ‘smatr’ package to analysis the variation of the plant leaf functional traits. Our study shows that, LNC, LPC and Aarea were increased while...
This paper uses the Thailand and the Singapore's stock prices of material from January, 2001 to December, 2009, discussing the model construction and their associations of between Thailand and Singapore's stock markets. The empirical results show that the mutual affects of the Thailand and the Singapore's stock markets may construct in bivariate IGARCH (1, 1) model with a DCC. The empirical result...
In this paper, a multiband loss less compression system exploiting inter-band data correlation is presented. We develop an adaptive prediction scheme that can dynamically switch among smooth, intra and intra-band prediction modes subject to the data correlation. Specifically, we use context information to determine the inter-band correlation between neighboring bands, and then borrow the wisdom of...
This paper analyzes the coordination issues between supplier and manufacturer and explores a conceptual model for the relationship between working-together and system performance. Based on the data from a survey on suppliers and producers in China, in the producer-service sectors of logistics, import & export, science & technique, information, marketing, human resource, law, account &...
Deploying femtocell networks embedded in the Macrocell coverage greatly benefits communication quality in variety manners. However, the lack of schemes to effectively mitigate detractive interference, fully utilize radio resources and provide quality-of-service (QoS) guarantee (in terms of delay) creates challenges to practically facilitate the concept of femtocell. To tackle these challenges to achieve...
Many segmentation problems in medical imaging rely on accurate modeling and estimation of tissue intensity probability density functions. Gaussian mixture modeling, currently the most common approach, has several drawbacks, such as reliance on a specific model and iterative optimization. It also does not take advantage of substantially larger amount of data provided by 3D acquisitions, which are becoming...
Performance degradation due to Wiener phase noise, which causes both common phase error (CPE) and inter-carrier interference (ICI), is a crucial challenge to the implementation of OFDM systems. In this paper, we theoretically employ the Lorentzian model to investigate the autocorrelation function of the ICI weighting function, which is the discrete Fourier transform of the exponential phase noise...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.