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How to accurately estimate facial age is a difficult problem due to insufficiency of training data. In this paper, an effective approach is proposed to estimate facial age by means of extreme learning machine (ELM). In the proposed method, a set of features is randomly selected from the original features to consist of a feature subspace. Given an initial weight matrix, the training samples within...
With the increase of usage time, the working state of equipment will be changed, thus the simple mechanism model is difficult to meet the requirement of precision. In accordance with this special characteristic, a 2 stage modeling of a certain type marine condenser based on mechanism and historical data is presented in this paper. Firstly, the operating mechanism of the condenser is analyzed, and...
Nowadays graphical user interface (GUI) has been widely used in software systems, while there is no efficient testing techniques for the rapidly evolving GUI applications. For the GUI applications are modified rapidly and the test suites trend to be huge in size, it is often desirable to select a subset of test cases to fulfill the regression testing. In this paper, a novel GUI state model is presented...
In the next-generation 5G system, millimeter wave (mmWave) multiple-input multiple-output (MIMO) system utilizes massive antennas at transmitter and receiver to increase the throughput and reliability. Due to the short wavelength of mmWave signals, more antennas can be adopted to alleviate severe channel path loss. However, the increase of RF chains raises the chip cost of the transceiver. Thus, hybrid...
Graphical User Interface (GUI) application is a kind of typical event-driven software (EDS) that transforms state according to input events invoked through a user interface. It is time consuming to test a GUI application since there are a large number of possible event sequences generated by the permutations and combinations of user operations. Although some GUI test case prioritization techniques...
In the paper, we concentrate on the influence of heterogeneity on the performance of forwarding algorithms under opportunistic networks. Therefore, we first describe two different heterogeneous network models, and capture the heterogeneity which concern mobile nodes’ contact dynamics under the individual models and the spatial models. Then we investigate inter-contact time is not fully follow exponential...
At the present, tactile sensor technology can be found many applications in many industrial and medical areas, and is still attracting more and more research attention. In this paper, a new tactile sensor, focusing on the characterization of different tissues, is designed. Tissue characterization plays an important role in minimally invasive surgery which lacks the force feedback. Consider a compatible...
Understanding the dynamic traffic and usage characteristics of data services in cellular networks is important for optimising network resources and improving user experience. Recent studies have illustrated traffic characteristics from specific perspectives, such as user behaviour, device type, and applications. In this paper, we present the results of our study from a different perspective, namely...
This paper presents a design scheme of the new model of the impact pneumatic cylinder, and analyzes its key part such as direction-control valves, piston rod and so on. An experimental model-machine is manufactured and used for the tests on the experimental platform. We obtain the pressure variation in the impact pneumatic cylinder from numerous lifespan tests based on simulated practical working...
Our survey found: in current there are three types of the pricing strategy in mobile communication services: the cost-plus, the competitiveness -oriented and the consumer-oriented strategy. This paper derives that the pricing strategy as the mobile communication enterprises is selected by identifying the actual situation of itself and the proper stage of mobile business development, and comparing...
To develop heat exchangers with high efficiency and low energy consumption, four kinds of arc-type slotted fins are modeled and simulated in the paper. The four kinds of fins the paper selects are a combined slotted fin, a wide slotted fin, a narrow slotted fin and an improved one, respectively. Before numerical simulation for the slotted fins, physical model, computational domain, governing equations...
This paper pointed out that the user-oriented pricing strategy uses four aspects of the sensitivity analysis (the price expectation, the price indication effect, the availability of alternative service and economic condition of user) and thus stratifies for rural users. We found that based on above pre-development activities, the process of Service Value Delivery can wake up the user unaware of consumption...
Currently, almost all gas-oil-water multiphase flow meters used in the oil industry, for production monitoring and/or well testing, rely on radioactive source emitting gamma rays. These meters are, however, expensive and sometimes have logistic issues in deployment. A team of researchers from The University of Manchester and Schlumberger Cambridge Research have developed a research prototype flow...
Estimation of damages caused by a large earthquake is a major task in the post disaster mitigation process. To enhance the relief and rescue operation in the affected area it is required to receive rapid, accurate knowledge about the conditions of damaged area. Remote sensing techniques were proved to be useful to detect, identify and monitor the impact and effect of natural disasters in last decades...
In this paper, a 3780-point FFT algorithm combining of Good-Thomas, Cooley-Tukey, and WFTA algorithm is presented and its hardware implementation by using shift rules based on the analysis of the finite word length effect is described. The simulation results show that the output SNR meets the requirement of TDS-OFDM system.
The extraction and purification of microcystin from microcystic aeruginosa were studied. The efficiency for microcystin extraction was assessed by comparing different polarity extraction agents. Results showed that 60% methanol has the highest efficiency. Ethanol solution could extract microcystins safely, and can be used as a massive security extraction agent. The extraction method and solid phase...
The Covering algorithm is proposed by Professor ZhangLing and ZhangBo in the 20th century, which simulates the structure of human learning, building a Constructive Neural Network Learning Model. Covering algorithm has been widely used to solve massive data classification problem, because its performance. The covering classification algorithm has fast learning, high recognition rate, massive data processing...
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