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The paper mainly aims at the embedded database application in the embedded system; design a low cost and high efficiency data manage system. The system is mainly used in the smart phone data management, to make intelligent mobile phone has the PC data management ability. The author discusses the system/detail design and process of the main modules. In ARM9 + Linux experimental platform, mobile phone,...
From the embedded equipment, embedded mobile database and the characteristics of GIS, in line with full use of embedded equipment resources design ideas, designed a complete, high efficient database based on embedded GIS system architecture. In the nuclear framework of this system structure, according to the visitor design pattern, the spatial index interface is designed; the spatial index module...
Under the current economic environment, the trades that produce the same products are increasing, enterprises' supply begin to exceed demand, so the enterprise must emphasize on creativity for meeting customers' changing needs so as to improve organizational sales and profit. This essay mainly discusses the importance of creativity, the creative process and its applications. Moreover, it proposes...
The sensor measuring stem water content based on SWR (standing wave ratio) principle was presented in this paper. Laboratory and field tests were performed to examine the feasibility of SWR (standing wave ratio) sensor to monitor changes in the moisture storage of the woody parts of trees. To serve as wave guides for the SWR signal, pairs stainless steel rods (50 mm long, 3 mm in diameter, and 30...
The purpose of this paper was to model the daily stem water content with neural network. The output voltage of stem water content sensor changed as time series. In order to ensure the accuracy of the model, coefficients sc and eg must be adjusted with the RBF NN input vector changed. The dimensions of input vectors were grouped from 2, 4, 5 separately. After being grouped, observed data were input...
This For the determination of plant water content on-line, a sensor based on SWR (Standing-Wave Ratio) measurement principle was developed. To evaluate the feasibility of the proposed technique, a comparative experiment between the developed sensor (BD-II sensor) and SF-L (SF Type Sap Flow Systems, Germany) has been conducted over the past two years. The experimental results obtained from both instruments...
The measurement of volume water content in stem based on dielectric constant has been utilizing widely. A study based on SWR (standing wave ratio) technique was presented in this paper. The sensor probe plays an important role in determination of stem water content with a variety of instruments. Therefore, it is critical to study the length of the probe in order to improve the measuring accuracy of...
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