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.
Organic Rankine Cycle (ORC) system has shown its superiority among different ways of recycling waste heat. Evaporator, as the key component of ORC system, has a great impact on efficiency and circulation. The dynamics of evaporator include many uncertainties because of random changes of heat sources and other factors. Traditional control strategy could not offer satisfactory results. In this paper,...
In order to make the healthy and stable operation of the next generation Internet, this paper designs a network traffic monitoring system oriented IPv6. The System uses the collected Net Flow data to make statistics and analysis. The key technologies used in the system were introduced and the main framework of the system was given. The system has been tested in the cernet2, and the test results show...
Considering the instability of link quality, a new routing algorithm for WMN, namely ASA, based on Ant Colony Optimization algorithm(ACO) and simulated annealing algorithm(SA) was presented. This algorithm not only combined the adaptation, robustness and distributed, decentralized merit of ACO but also used SA to remedy the weakness of ant algorithm and increase the convergence rate of ACO. Simulation...
Attack and defense is the two important aspects of network security issue. Network security situational assessment has focused on attack roundly. Numbers of network security situational assessment models have been put forward based on attack and threat. Those methods have obtained good results. On the other hand, defense lacks careful consideration. Defense embodies system tolerance. System tolerance...
Local Binary Patterns (LBP) is an effective texture description operator and the histogram that it generates has been proved to be a very useful texture feature to adapt to rotation and illumination. Using the LBP features as feature vectors in adaBoost classifier for target identification has become a trend. But LBP is bound by the scale transformation, so it is not widely used in adaBoost face detector...
Watermark resistance to geometric attacks is a crucial issue in watermark system design. Challenging cropping and recently reported random bending attacks (RBAs) are still the Achilles heel for most of the existing watermarking schemes. This paper presents a geometric attacks resistant zero-watermarking scheme for color images, which is based on one of the image geometric invariant representations-the...
This study aims at furthering our understanding of system framework of knowledge teams. Based on introduction the concept of knowledge chain and knowledge network, the paper explore the dynamic capability construction mechanism of knowledge teams by Learning through knowledge chain network coordination. We propose that keeping in contact with the knowledge chain network is an important tacit for team...
A novel product data management mode, CVPDS (Collaborative Visualization Production Development System), which is based on the cooperative design and visualization technology, is proposed in this paper. It also analyzes and establishes the system frame, discusses the key technology of cooperative visualization development and the implementing management flat; studies the realization method of 3D virtual...
Current digital devices lack the ability to adapt to various lighting conditions, and this makes image color auto adjustment increasingly important. In this paper, we present a simple and effective progressive image color neutralization approach to adjust the image bright region, dark region and mid region independently. First we neutralize the bright region and dark region based on single representative...
In response to the roller bearing fault of the engineering vehicle, the excellent characteristics of time-frequency of wavelet packet is used to decompose the fault signal. Then we extract the necessary of the fault signals. Finally, we carry out the recognition of fault types using multi-class support vector machine and dynamic clustering algorithm brought forward in the paper. It is such a algorithm...
This paper presents a simplification method for B-rep (boundary representation) models through region suppression. It suppresses every complex unwanted region of a B-rep model as a whole so as to effectively and efficiently generate a simplified version of the original model that preserves the rough shape. In this method, the new surfaces that are used to cover each suppressed region are constructed...
Data from 312 R&D employees across companies were used to test a innovation model of organizational climate for innovation, individual extrinsic motivation and employee innovative behavior in china background. Results suggest that organizational climate for innovation, employee extrinsic motivations positively contribute to employee innovation behavior; extrinsic motivations mediate the relationship...
Urbanization, the conversion of other types of land to uses associated with growth of populations and economy, is a main type of land use and land cover change in human history. In recent 30 years, urban growth has been speeded up, and extreme stress to the environment has occurred in China. Based on the Defense Meteorological Satellite Program's Operational Linescan System (DMSP/OLS) stable nighttime...
In order to evaluate the impact of urbanization on carbon cycle, we selected the Beijing city as the study area to estimate CO2 emission both from anthropogenic activity and natural processes. The spatial pattern of annual CO2 emission in 1992 and 2005 in Beijing city was estimated by using the socio-economic statistical data, remote sensing data and GIS-based approach. The main factors include transport,...
Due to the non-renewablity of fossil fuels, the biomass energy has drawn more attention. However, owing to the large-scale dispersive distribution of biomass and lack of financial return to guarantee the sufficient feedstock of the centralized conversion facility, the development of the bioenergy is under slow progress in China. According to the previous research, there is a correlated coefficient...
Speech prosodics (i.e., pitch, energy, etc.) play an important role in the interpretation of emotional expression. However, certain pairs of emotions can be difficult to discriminate due to similar displayed tendencies in prosodic statistics. The purpose of this paper is to target speaker dependent expressions of emotional pairs that share statistically similar prosodic information and investigate...
Climate for innovation is an important factor for organizational innovation. On the basis of our prior research which indicated that organizational innovative climate in china include seven dimensions, such as working environment, organizational support, organizational vision, leadership support, team support, resources, learning growth and knowledge & skill, we use survey research to explored...
Data from R&D employees across companies were used to test a innovation model of HMX(Horizontal Member Exchange), leaderpsilas innovation expectation, intrinsic motivation and employee innovative behavior in China background. Results suggest that HMX, leaderpsilas innovation expectation and intrinsic motivation positively contribute to employee innovation behavior; intrinsic motivations mediates...
Electrochemical impedance spectroscopy (EIS) is one of the important means in the study of surface dynamics during complex electrodes reaction. Two signal techniques are used in the EIS: the frequency-domain and time-domain techniques. Electrochemical impedance spectroscopy measurement based on the fast Fourier transformation (FFT), which can probe transient electrochemical processes, is highly regarded...
Distributed spacecraft systems implement enormous new functions by augmenting multiple spacecrafts as unified. That demands the precise positioning information about each satellite nodes in the distributed spacecraft system. To achieve the position calibration, multidimensional scaling is introduced. MDS computes a 3-dimensional map of each satellite nodes from the distance information in the system...
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.