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Topic models (e.g., pLSA, LDA, SLDA) have been widely used for segmenting imagery. These models are confined to crisp segmentation. Yet, there are many images in which some regions cannot be assigned a crisp label (e.g., transition regions between a foggy sky and the ground or between sand and water at a beach). In these cases, a visual word is best represented with partial memberships across multiple...
As a special yet important part of vehicular ad hoc networks (VANETs), Bus-VANETs have attracted much research attention in recent years. Most of existing studies focused on developing routing protocols in Bus-VANETs based on the predictable bus route. In this work, we embark a study on information services in Bus-VANETs, where bus information is provided via the hybrid of infrastructure-to-vehicle...
The purpose of this paper is to evaluate remaining useful life (RUL) of machine tools, which is a key indicator for equipment maintenance and health management. The proposed method takes the factors of reliability, maintainability and economy into account and constructs the evaluation index system based on analytical hierarchy process (AHP) method. Euclid approach degree is then calculated through...
Integrated circuit (IC) chip fabrication consists of hundreds of complicated and time-consuming processing steps like wafer processing, testing and packaging. However, it is hard to achieve the efficiency and output while maintaining the high product quality and reducing overall costs simultaneously in the complexity of semiconductor manufacturing. In order to achieve the low cost manufacturing via...
Current 2D planar NAND has its limitation for expanding capacity due to the performance and reliability intrinsic characterization will be impacted as device scaling below the 20nm technology node. Such as write bits error, data retention and read disturb, etc. Continued scaling increases the effect of cell-to-cell interference, which widens the program state width. 3D vertical stacking memory cells...
Epidemic routing is considered useful for wireless mobile sensor networks where infrastructure support is limited and sensed information has to be disseminated in a timely manner. The relaying overhead of epidemic routing, however, needs to be reduced to conserve energy. In this paper, we study a new problem: what is a good strategy in epidemic routing to self-stop forwarding a message when a certain...
In order to simplify current fire simulation models for more wide-spread use, a Real-time Web-based Wildfire Simulation System (RWWSS) was developed. RWWSS is a web-based application that provides free access to exploring wildfire simulations. It was developed as an educational tool for the purpose of helping people understand the mechanism of fire propagation and its key impact factors, as well as...
When it comes to the reliability allocation of Computerized Numerical Control (CNC) turrets, there are two problems. One problem is that the corresponding reliability index is only allocated into each subsystem; another problem is that neglecting the coordination between each subsystem will affect the results of reliability allocation. To solve these two problems a new research method for CNC turret...
Due to its high density and low standby power, phase change memory (PCM) has been considered to be a promising alternative of DRAM while DRAM faces its scaling limits and serious power consumption. However, PCM cells can only endurance a maximum of 107-108 write operations, making a PCM based system have a lifetime of only hundreds of days on average, it is even worse for some memory intensive applications...
In this paper, a set of friction braking deceleration system is designed based on the ultrasonic motor. Because of the fast response and high accuracy, the system can realize the fast and accurate change of the speed, and achieve the stepless control of the speed. First, the structure of the friction braking deceleration system is designed, and the speed of a rotating disk is precisely controlled...
In this paper, a dual ring ultrasonic motor based on out of plane bending vibration mode is proposed, fabricated and characterized. This motor is composed of a stator constituted with two ring and one rod-shaped transducer at the middle and two disk shaped rotors. There are four piezoelectric ceramic plates are bolted at the middle of the rod-shaped transducer and used to excite the stator's blending...
In real time systems, random caches have been proposed as a way to simplify software timing analysis, by avoiding corner cases usually found in deterministic systems. Using this random approach, one can obtain an application's probabilistic Worst Case Execution Time (pWCET) to be used for timing analysis. As with deterministic systems, technology scaling in cache memories is making transient and permanent...
The paper presents a low-voltage low-power CMOS subthreshold voltage reference with no resistors and bipolar junction transistors applied in a wide temperature range. A GGNMOS transistor is used to fine-tune of its curvature compensation in high temperature. The temperature coefficient (TC) is lower than 6ppm/0C in a temperature changed from −40°C to 125°C with different corners. The supply voltage...
Continuous scaling down NAND FLASH toward below 2Xnm node generation will result in serious Floating Gate (FG) poly depletion due to dopant loss and significantly degrade the cell reliability performance. FG implantation (IMP) before inter-poly-dielectric (IPD) deposition was proposed in this study, but it suffered FG damage and resulted in control gate (CG) void issue. We have successfully minimized...
The thermal stability of CoSi2 layers on P-doped polycrystalline Si was investigated. It was observed that the additional Ge+ implant is performed prior to Co sputtering can suppress the CoSi2 agglomeration behavior. The samples with Ge+ implant at 50KeV implanted energy and more than or equal to the dose of 2E15 ions/cm2 show that the agglomeration of CoSi2 film is completely suppressed during high...
Banding is a common video artifact caused by compressing low texture regions with coarse quantization. Relatively few previous attempts exist to address banding and none incorporate subjective testing for calibrating the measurement. In this paper, we propose a novel metric that incorporates both edge length and contrast across the edge to measure video banding. We further introduce both reference...
With the increasing demand of computing resources, a lot of large-scale data centers have been established around the world. Data centers provide efficient and convenient computing services while consume enormous energy at the same time. Therefore, reducing the energy consumption in data center is important and meaningful. Virtual machine consolidation (VMC) is an effective strategy that can improve...
Nonlinear clustering has attracted an increasing amount of attention recently. In this paper, we propose a new nonlinear clustering method based on Cluster Shrinking and Border Detection (CSBD). Unlike most existing clustering method, the CSBD method focuses on every data point rather then the cluster centers. A novel idea, namely Cluster Shrinking, is designed to transform the original nonlinear...
The increasingly important data-intensive scientific discovery presents a critical question to the high performance computing (HPC) community - how to efficiently support these growing scientific big data applications with HPC systems that are traditionally designed for big compute applications? The conventional HPC systems are computing-centric and designed for computation-intensive applications...
High precision motion capture system has important significance for the research of the control algorithm of the quadrotor. Focus on the problem of the vibration caused by a large deviation when the traditional PID control appears a large velocity change, an incomplete differential ahead improved PID algorithm is proposed to design the flight control system. In order to improve the accuracy of the...
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