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.
In this paper, a novel I/O stage coupling scheme is presented for exploration of a triple-mode bandpass filter with improved out-of-band performance. A triple-mode stub-loaded resonator is first formed by tap-connecting a λ/2 resonator with a pair of open-ended stubs of less than λ/4 in length at its two symmetrical positions. Thus, three resonant modes are excited to make up a three-pole passband,...
This paper proposes a general synthesis method for the even-order Chebyshev bandpass filter with equal I/O port impedances. It is prevalently accepted that the even-order Chebyshev filter has unequal I/O terminations due to impedance mismatch at D.C. in its lowpass prototype. In this paper, two symmetrical properties are firstly found among the elements of even-order Chebyshev lowpass ladder network...
With the high development of wireless communications, next generation wireless networks must be heterogeneous networks. One of the major design issues is vertical handoff which is the decision for a mobile node to switch from one network to another different type of networks. In this paper, firstly we analyzed two schemes of network discovery and their limits. Then a discussion was made on the advantages...
Finding regions of similarity between two data streams is a computational intensive and memory consuming problem, which refers to as sequence alignment for biological sequence. Smith-Waterman algorithm is an optimal method to find the local sequence alignment. It requires a large amount of computation and memory, and is also constrained by the memory access speed when accelerated by using Graphics...
Cone-beam CT (CBCT) applications in radiation therapy are limited by excessive imaging dose from repeated scans and poor image quality mainly due to scatter contamination. Recently, we develop a Compressed Sensing (CS) reconstruction algorithm (referred to as Accelerated Barrier Optimization for CS (ABOCS)) with the features of fast convergence and consistent parameter tuning. ABOCS has shown promises...
Compressed sensing (CS) enables accurate CT image reconstruction from low-dose measurements, due to the sparsifiable feature of most CT images using total variation (TV). The CS reconstruction is formulated as either a constrained problem to minimize the TV objective within a small data fidelity error, or an unconstrained problem to minimize the data fidelity error with TV regularization. However,...
With the rapid development of e-commerce industry, the employment demands is growing strongly. In contrast with this, the difficult employment situation of e-commerce graduates has become increasingly prominent. The paper conducts an analysis, by applying web techniques, to reveal that the current universities' e-commerce curriculum exist some deviation with the recruitment needs. Then, we put forward...
As an emerging platform for online shopping, online review changed the network consumer's purchase mode. In this paper, we study the effect of potential online purchaser influenced by the online reviews, by means of the questionnaire. The final study shows that: the Internet consumers when making purchase decisions are mostly affected by the average scores of products; and not significantly affected...
The paper conducts a domestic E-Commerce research topics evolution statistical analysis based on 139 E-Commerce related literature published in 12 different core journals during 2006 to 2010 and explores the evolution process of E-Commerce research topics through perspectives of year distribution, author distribution, source journals distribution, keywords distribution and research topics distribution...
This paper presents a fast method for predicting inverter performance and evaluating power devices in electric vehicle drives during longtime driving cycles. The reliability of insulated gate bipolar transistors (IGBTs) is directly influenced by temperature and temperature variation cycles. Based on ANSYS SIMPLORER, a novel method of decoupling the device and inverter simulation is proposed to maintain...
Near-duplicate image retrieval (NDIR) is an important topic for many applications such as multimedia content management, copyright infringement identification et al. In this work we propose a novel NDIR framework based on visual phrase. Compared with previous researches, this paper first introduces a spatial visual phrase (SVP) model enabling to capture relative geometry information between visual...
In order to meet the requirements of multiple data links cooperative combat in network centric battle field, we analyzed the problems and challenges that US Army tactical data link system encountered when meeting the needs of network-centric warfare. On the basis of this, we put forward a new battlefield-oriented, demand-based, real-time serviced networking data link system—the joint data link system...
The stability problem with current vector control in the deep flux-weakening region is analyzed and a new flux-weakening control scheme to operate the PMSM in the MTPV (Maximum Torque per Volt) region is proposed. The proposed control scheme significantly improves stability and increases speed range while maintaining maximum possible torque capability. The transition between different operation regions...
This paper is an introduction to software performance automated testing and theory. It introduces the features of Open Xml storage and SQL Server storage. Then this paper sets three state scenes and chooses different test automated tools respectively. Finally, it uses tools to monitor software performance index from these two data storage systems. Results are then analyzed, comparing the quality performance...
Describes the vibration problem of the existence of intelligent prosthetics on the market, In order to monitor the vibration source, Using ANSYS modal analysis on smart prosthetics, Will be effective to estimate the vibration characteristics of the overall structure, And set up a vibration test platform to monitor the vibration signal, This paper presents a set of intelligent artificial limb vibration...
Clustering is to divide a set of objects into multiple classes, and each class is made up of similar objects. Traditional centralized clustering algorithms cluster objects stored in a single site, but it cannot satisfy the clustering requirements when objects are distributed. Distributed clustering algorithms can satisfy this need, which extracts a classification mode from distributed objects. This...
A failure case study and root cause of ultra low-k film delamination was reported. TOF-SIMS composition analysis found higher concentration of carbon at the transition oxide. The clogging of the foreline flow path was identified in the process to cause the transient carbon surge, resulting in higher carbon concentration in the transition oxide and poor adhesion of the ultra low-k film.
In this paper, PID control model was set up for the main steam temperature control system of modern large-scale power plant, combined the immune algorithm and particle swarm optimization, and improved by adding adaptive crossover and adaptive mutation. It is optimized the main steam temperature control system which in typical load conditions with the improved algorithm. By comparison with the traditional...
Linear Proximal Support Vector Machines (LPSVM), like decision trees, classic SVM, etc. are originally not equipped to handle drifting data streams that exhibit high and varying degrees of class imbalance. For online classification of data streams with imbalanced class distribution, we propose an incremental LPSVM termed DCIL-IncLPSVM that has robust learning performance under class imbalance. In...
A microstrip triple-mode bandpass filter using a single patch-loaded cross resonator is reported in this work. First, a square patch is added at the center of a cross resonator, which separates the resonant frequencies of the first and second modes. Then, a pair of slots is etched into the square patch, which splits the first pair of degenerate modes. By appropriately adjusting the patch size and...
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.