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Adverse drug reactions (ADRs) are a main cause of hospitalization and deaths worldwide. These unanticipated episodes are generally infrequent, but almost all existing ADR signaling techniques are designed to use dataset extracted from spontaneous reporting systems or employed a predefined type of information (e.g., drugs), which suffer from failures to detect unexpected and latent ADRs. In this paper,...
Despite the numerous advantages of planar transmitarray antennas over conventional lens antennas, transmitarrays have a narrow bandwidth. The goal of this paper is to present a design methodology for improving the bandwidth of transmitarray antennas through control of the transmission phase range of the transmitarray elements. Two Ku-band transmitarrays using quad-layer double-square loop elements,...
Planar reflectarray antennas with parabolic-torus phase distribution are investigated for high-gain beam-scanning applications. Analytical expressions for the reflectarray aperture phase distribution are derived for the generalized offset configuration. A Ka-band planar reflectarray with 30 dB gain and 40 degree scan coverage is demonstrated. The study reveals that planar reflectarrays with parabolic-torus...
In the wireless meter reading system of the high-rise buildings in the city, adopting point-to-point wireless meter reading has the disadvantages of high transmission power and high consumption power for node, so it is inevitable development to ad hoc between meter reading nodes. However, it has the characteristics of the high cost to move the existing wireless self-organizing network to the wireless...
The goal of this work is to reduce the complexity and cost of transmitarray antennas by decreasing the number of layers. Three different methods are used to design triple-layer transmitarray antennas, while maintaining the overall performance with full transmission coefficient phase range of 360° and avoiding the reduction of the element transmission coefficient magnitude.
Since the early 1990's, printed reflectarrays antennas have emerged as the new generation of high-gain antennas, providing many advantageous features such as low-mass, low-profile, and low-cost over reflectors and printed arrays. Moreover, they are also quite suitable for applications requiring high-gain and beamscanning features. For the beam-scanning operation, one approach is to equip the reflectarray...
The K-means algorithm is one of the most well-known clustering algorithms that has been frequently used to variety of problems. However, its processing performance has usually encountered a bottleneck if used to deal with massive data. Since MapReduce as the most popular cloud computing parallel framework is effective to handle massive data, the researches of K-means clustering algorithm which is...
Software vulnerability localization is of great importance for vulnerability analysis as the basic step of vulnerability exploitation and vulnerability fix up. By viewing large-scale software as a complex network system, we present a new method of vulnerability localization. The software structure is depicted by system-level features of complex network. In this way, we generate structural signatures...
This study found a positive correlation between dual commitment and positive industrial relations climate while a negative correlation between dual commitment and negative industrial relations climate according to a questionnaire survey with 610 samples in several Wuhan's private enterprises. With a further research by using the Logistic regression model, the affective commitment, normative commitment...
According to the fact that the random construction method of LDPC(Low Density Parity Check) codes are lack of structure and are difficult to be implemented in hardware, two construction methods of QC-LDPC(Quasi-Cyclic LDPC) codes-sequential and random search method based on distance graph are proposed. The two algorithms can produce flexible QC-LDPC codes by setting the parameters such as code length,...
A Trace Matrix (TM) represents the relationship between software engineering artifacts and is foundational for many software assurance techniques such as criticality analysis. In a large project, a TM might represent the relationships between thousands of elements of dozens of artifacts (for example, between design elements and code elements, between requirements and test cases). In mission- and safety-critical...
To find the changes of surface compositions during life time of the Scandia-doped impregnated dispenser cathodes, two cathodes have been tested at an activation temperature of 1150°CB-Mo and an operation temperature of 1000°CB-Mo, respectively, in an AES system up to more than 7,000 hours. Surface compositions were monitored in-situ at intervals. The tested results have been reported and discussed...
According to the research on node centrality of complex network, the existing methods although take the global and local importance of node into account, but don't consider the importance of adjacent edges and the direction of interaction. For this, provides a new method for measuring the node centrality of complex directed network, considers the node's role in network efficiency and degree distribution...
Resistors in anisotropic dc unit cells in the cylindrical coordinate system can be calculated by two approaches: approximate and accurate model. We give the two models and compare their performances with numerical simulations. Our data show the two methods can produce very similar results.
This paper presents a design procedure of static H∞ loop-shaping control for linear time-invariant system. The H∞ loop-shaping weights are selected by maximizing the robust stability margin of closed-loop system while ensuring that the resulting loop-shape lives in a pre-defined region. Existence conditions for a static output loop-shaping controller are given in terms of two linear matrix inequalities...
For the problems of fundamental frequency changes and the presence of harmonic and interharmonic in microgrid, which bring difficulties to the harmonic analysis of the microgrid, this paper presents a new harmonic and interharmonic analysis method based on cubic spline interpolation algorithm to reconstruct the signal. The simulation results show that the new harmonic and interharmonic analysis method...
The class imbalance problem is of great importance to network intrusion detection data. Previous studies on feature selection always evaluate the performance of feature selection process according to the model performance and the size of selected feature subset, which neglect the stability of feature selection. We investigate the problem of the stability of feature selection and study in detail the...
E-government is a virtualized platform which is used by the government to do the administration online. According to the observation from a growing perspective, the e-government platform should be an intelligent information management bases. In an information based e-government platform, consulting subsystem plays an important roll. Here comes up with an auto-answer counseling subsystem as an attempt...
According to the current situation of multimedia instruction and application of campus network in new local colleges, this paper analyses problems and technical limitations in the process of implementing multimedia teaching; At the same time, combined with new requirements of multimedia instruction using network, it proposes the view that local colleges campus network should possess the ability of...
Influenced by global financial crisis and expanding enrolment of higher education, college students face serious employment and re-employment situation. College students must own core competence if they want to get success in employment competition. The professional training model adapting to market needs is to develop comprehensive professionals with advantages in creation, which can be achieved...
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