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Stereotactic operations were performed with the frameless stereotactic instrument (named as CAS-R-2) manufactured by ourselves rather than traditional stereotactic frame. The aim of this study was to assess the clinical usefulness, accuracy and safety of the frameless stereotactic instrument. We retrospectively reviewed 2011 patients aged between 0.2 to 89 years (with mean of 30.7 years) with CT/MRI...
Log-Polar transformation is an approximate model of human vision. If using it to recognize human faces, a reference point for the transformation is necessary, and the position of the reference point influences the recognition accuracy directly. However, it is difficult to extract an appropriate reference point from an image automatically. This paper proposes a face recognition method that detects...
Substrate Integrated Waveguide (SIW) will play an important role in mass production of millimeter-wave systems due to the low-cost, mass-producible, compact characteristic and easy to integrate with other planar circuits. It is necessary to estimate the fabrication yield in mass production. However, yield analysis is an impracticable task for the full-wave simulation method due to large computational...
In this paper, A W-band substrate integrated waveguide (SIW) filter is presented by using printed-circuit-board technology. The aggressive space mapping (ASM) optimization algorithm is adopted for designing the SIW bandpass filter. Fin line structure is proposed as the transition structure form SIW to waveguide. As demonstrations, A W-band SIW filter is fabricated on substrate RO5880 and measured...
An incremental n-dimensional solid spectral angle based band selection method is proposed in this paper, denoted as the INSSA-BS method, for hyperspectral dimension reduction. Inspired by the commonly used spectral angle mapper (SAM) method which measures the difference between two spectra through calculating the cosine value of the angle, we present a n-dimensional solid spectral angle (NSSA) method...
This paper presents a new distributed event-triggered control scheme that overcome a limitation in some previous event-triggered control schemes. Such an improved distributed event-triggered method has no need for continuously monitoring each agent' neighbors. Computer simulations examine the effectiveness on the application of the proposed consensus control.
Pedestrian detection is paramount for advanced driver assistance systems (ADAS) and autonomous driving. As a key technology in computer vision, it also finds many other applications, such as security and surveillance etc. Generally, pedestrian detection is conducted for images in visible spectrum, which are not suitable for night time detection. Infrared (IR) or thermal imaging is often adopted for...
Pedestrian detection is a rapidly evolving research area in computer vision with great impact on the quality of people's daily life. In pedestrian detection, a robust feature descriptor that discriminates pedestrians from the background is a paramount step. Generally, pedestrians are detected with features extracted from visible images. However, those features can easily be contaminated by the changes...
In the traditional linear spectral mixture model, a class is represented by a single endmember. However, the intra-class spectral variability is usually large, so an endmember is difficult to portray a category accurately, leading to incorrect unmixing results. Some algorithms play a positive role in overcoming the endmember variability, but there are shortcomings on computation intensive, unsatisfactory...
Pedestrian detection plays a paramount role in advanced driver assistant system (ADAS) and autonomous vehicles, especially with the growth of aging population. The purpose of pedestrian detection is to identify and locate people in a dynamic scene or environment. It needs to tackle the challenges such as illumination, color, texture, clothing, and background complexities. Different from visible imaging...
In this paper, we first give the definition of asynchronous communication topology of second-order multi-agent systems. Then we discuss respectively the leaderless and leader-following consensus problems of the second-order multi-agent systems under asynchronous communication topology. The proposed control protocols based on nearest-neighbor interaction rules can guarantee the leaderless and leader-following...
In this paper, distributed containment control problems of the second-order multi-agent systems under the undirected communication topology are investigated. Based on the LaSalle's Invariance Principle and the control protocols proposed in this paper, some necessary and sufficient conditions for the achievement of containment control are respectively proposed in the presence of multiple stationary...
This paper puts forward the evaluation index system of technological innovation capability of the high-tech industry in Shaanxi. Using factor analysis to evaluate and rank the technological innovation capability of the high-tech industry in Shaanxi. Find out the key factors that influencing the technological innovation capability. And give some appropriate recommendations.
Through collecting the real time control error in the area of power grid and power generation error of the generating units in Hunan Province, combined with ultra-short term load forecasting, established the new feedback control system considering the load error, area control error and generating unit error, we can guide real-time scheduling of the Hunan power grid and improve the control performance's...
The API interfaces provided by CUDA can help programmers develop CUDA applications and get high performance in GPU. However, many of the I/O operations are not supported in device codes. This paper has implemented most of the I/O functions through host's agent by using the characteristics of mapped memory in CUDA, such as read/write file and ¡®printf'. The methods that used to implement these I/O...
Log-Polar transformation is an approximate model of human vision. If using it to recognize human faces, a reference point for the transformation is necessary, and the position of the reference point influences the recognition accuracy directly. However, it is difficult to extract an appropriate reference point from an image automatically. This paper proposes a face recognition method that detects...
Using of free-form shapes has become popular to design complex products in agricultural machinery that have to fulfill engineering requeirments as well as aesthetic criteria. It meets the need of intuition in the process of creative design and computer aided design (CAID). Virtual Model Making System (VMMS) is usually used in the field of automobile styling design, but seldom used in agricultural...
Under the guidance of the comprehensive RDSS, a new three-satellite high-precision RDSS/RNSS combination positioning method is proposed in this paper, which uses a special designed RDSS/RNSS satellite and the others RNSS satellites to determine user position. The key research focuses on its principle and intending performance and lifesaving application.
Sustainable product design concerns economic, environmental and social impacts enacted through the product lifecycle. Majority of the manufacturers have realized the importance of sustainability, but there is not a effect method they can take into practice. This paper proposed a methodology which is based on the environmentally conscious quality function deployment (ECQFD) and product life cycle assessment...
Microchannel device is one of the prominent applications in micro and nano technologies. Basic theory for micro fluid is developing, but pressure loss in inlet and outlet of microchannel is paid little attention. Some researches show that the pressure loss in microchannel is only 10 percent, while that in inlet and outlet is up to 90 percent. So it becomes more important to analyze the pressure loss...
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