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Accurate classification and recognition of pulmonary nodules is an important and key process of Computer-Aided Diagnosis (CAD) system in lung cancer diagnose. Although it has become an increasingly popular research topic, it remains a lot of scientific and technical challenges. Not only do we lack the accurate and effective algorithm of recognition and classification, but also we have difficulties...
With the rapid development of the wireless communication technologies during the last decades, the use of small portable devices leading to a highly integrated RF circuit for WLAN systems and to a need of broadband for small portable devices. This trend imposes the design of minimized and multiband antennas for WLAN communications, such as WIFI, Bluetooth, ZigBee. A novel dual band antenna for WLAN...
As wireless communication develop rapidly in recent years, mobile terminals are smaller and more integrated. Circuits, such as Bluetooth, WiFi, 3G and 4G, are designed in one terminal, these make antenna should be multiband to meet the system's requirement. Then, how to design a multiband antenna with a limited space is a key problem for mobile terminal device. In this letter, we proposed a new antenna...
An RFID reader antenna with truncatedsegmented coupling elliptical loop is proposed to operate at UHF band. The segmented coupling rings are used to achieve inductive wireless power transfer (WPT) while communication. The proposed UHF reader antenna has an input impedance matching bandwidth (S11 < −10 dB) of 60MHz (890–950 MHz) with the highest gain reaching 3.8 dB at 915 MHz. The WPT feature during...
In this paper, we propose a novel compact Printed Inverted-F MIMO Antenna operating at 5.8 GHz for WiFi applications. A fractal shape patch shorted at one end is used, which works to reduce the size of antenna. To further reduce the size of antenna, we extend an edge of patch towards the ground. In order to obtain high isolation, we use a PIFA with a ground plane. The simulation results show that...
Multiple input multiple output (MIMO) technology can increase the channel capacity and the reliability of the transmission, so MIMO technology has become a hot spot in the field of wireless communication. Multi-antenna technology is an important part of MIMO technology. A MIMO antenna, with two elements and operating on 433 MHz, was proposed in this paper. For the antenna element, due to the low frequency...
A printed tri-band UHF RFID tag antenna for Monza4 chip which is mountable on metallic surface is proposed with a miniaturized size of 20mm × 35mm × 1.6 mm. A grounded patch is designed to realize the character of mounting the metallic surface. The meander shape lines are used to miniaturise the proposed antenna. To realize three bands, three microstrip parasitic ground lines of different resonance...
Optical spin-Hall effect (OSHE) is a spin-dependent transport phenomenon of light. Here, the spin of light is associated with the circular polarization. Although being observed one decade ago [1], OSHEs are usually extremely weak and in uncontrollable manner owning to the inability to fully control the spin-orbit coupling. Recently, with the development of metasurfaces, the spin-dependent splitting...
In this paper, we present an environmentally stable all-polarization-maintaining Erbium-doped Q-switched fiber laser based on WSe2-PVA as a saturable absorber. WSe2-PVA film is synthesized by liquid phase exfoliation. We let the fiber laser continue to work twelve hours, and we keep a record of the output power, optical spectrum, and frequency spectrum every thirty minutes. The results shows the stability...
This paper presents a novel transmission line which has a constant phase shifter over a wide band, referenced to a uniform transmission line. The novel transmission line is loaded with lumped element. Compared with the conventional coupled line phase shifter, the configuration shows good performance with simplicity in both design and fabrication. And the use of lumped elements make the size more compact,...
A novel compact dual-band power divider integrated with filtering responses is presented in this paper. The proposed circuit utilizes two sets of resonators. By controlling these resonators, dual-band operation can be realized and the pass bands can be tuned independently. Furthermore, a resistor is connected between the two open ends of the feed line to obtain good isolations at two bands. To verify...
A printed monopole antenna is proposed for the broadband mobile phone applications with a compact radiator size of 20×60mm2. The broadband and miniaturization of antenna was realized by using multiple branching construction and folded radiator technique respectively. A ground path was shorted the ground plane of 80×60mm2 with a gap adjacency to the feeding strip for wideband. The proposed antenna...
In recent years, terminal equipment has been developed more multi-band and integrated. In order to reduce the interference between antennas and realize the feature of simpleness, the design of broadband antenna has become the focus of research. Because of the limited spaces of the mobile terminals, the antenna gain, bandwidth and roundness of pattern are the difficult points of designing the sleeve...
In this paper, a dual-functional device with power divider and filtering is designed with high selectivity and wide stopband in a compact size. A filter is used to replace the quarter-wavelength line of the traditional power divider. The filter consists of two half-wavelength resonators with same fundamental frequency and different harmonics. Thus, the out-of-band rejection is enhanced. To verify...
The image features play an important role in object detection and recognition, the method of object detection based on Histogram of Oriented Gradient(HOG) for its good detection result receives extensive attention to many researchers. This article describes the approaches to Histogram of Oriented Gradient and support vector machine, focusing on studying the HOG feature and application, detailing the...
GNU Libc (GLIBC) is the standard C runtime library of most Linux distributions for PC and servers. There used to be many memory corruption exploit techniques against ptmalloc, the default heap allocator of GLIBC. But the widely deployment of mitigations like NX and ASLR on modern operating systems and continuous patching to ptmalloc effectively obsolete most of these techniques. We believe security...
Microwave plasma was generated on top of the electrode by applying microwave radiation of 2.45 GHz in water. The light-emitting region and radicals formed by microwave discharge were investigated. The experimental results showed that the light-emitting region of microwave plasma in water increased with increasing microwave power, and conversely, decreased with increasing pressure; bubble around the...
As The integration of Physical space and cyberspace, the large-scale data distributing to diversification terminal which is geographical distribution of mass has become a huge challenge. When the data size can't be processed by the technology for traditional scope, how to deal with the user quality of service and efficient use of system resources has become an important issue of concern, with the...
The reliability analysis of transmission and transformation equipment is the key to the risk assessment of power system. Based on internal and external mechanism which will lead to failure, this paper proposes Ageing-Load-Health-Weather-PHM (ALHW-PHM), which is applicable to characterize the failure probability. The model adopts temperature-based aging model as the baseline hazard function, and utilizes...
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