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Outdoor localization is of great importance for driving navigation, attracting many research efforts in past decades. Prevailing GPS achieves meter-level localization accuracy under general outdoor conditions. Yet, GPS service performs poorly in urban canyons where skyscrapers blocks GPS signals and drain mobile phone battery quickly within few hours. In this work, we exploit common city facilities,...
This paper is concerned with the design problem of robust model predictive controllers for a class of discrete-time systems with time-varying network-induced delays and nonlinear perturbations. The proposed robust networked predictive control (RNPC) consists of the control prediction generator and network delay compensator. By using a new buffering technique, a delay compensation strategy is proposed...
The purpose of this work is to prepare an animal model for endometriosis with the pattern of kidney-deficiency and blood-stasis, and attempt to provide a scientific tool for further study combining disease with syndrome on reproductive barriers. The trial will be randomized into four group: the blank control group, the model control group of kidney-deficiency, the model control group of endometriosis...
Cyclobalanopsis glauca, a Fagaceae plant, is one of the dominant species in subtropical evergreen broad-leaved forests in humid East China and also the main afforestation species in the region. Choosing the proper substrate is a key factor of optimal growing conditions for Cyclobalanopsis Glauca container seedlings. It is important to investigate feasible and correct combination of substrates with...
Texture is one of the important characteristics used in identifying objects or regions of interest in an image. This paper describes some textural features based on integrated spatial gray level co-occurrence matrix, and illustrates the effectiveness of four textural features in categorizing ultrasound breast tumor images by means of Fuzzy C-means and K-medoid clustering algorithms respectively. The...
The rule-based localization methods proposed in this paper are based on two important observations. First, although the absolute RSS values change with time, the relative RSS (RRSS) values between several Access Points (APs) are more stable than the absolute RSSs. Thus, we can use RRSSs as rules for inferring a client's location. Second, when a unique location cannot be obtained based on RRSS rules,...
Activity monitoring, a crucial task in many applications, is often conducted expensively using video cameras. Also, effectively monitoring a large field by analyzing images from multiple cameras remains a challenging problem. In this paper, we introduce a novel application of the recently developed RFID technology: using RF tag arrays for activity monitoring, where data mining techniques play a critical...
This paper addresses the dynamic output feedback guaranteed cost control problem of networked control systems (NCSs) with time-varying but bounded communication delays. A delay-dependent sufficient condition is derived for the existence of the dynamic output feedback guaranteed cost controllers, and the condition is formulated in terms of nonlinear matrix inequality. An iterative algorithm involving...
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