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Based on the biogeochemical cycle theory, an early warning model of forestry ecological geochemistry is constructed. By testing and analyzing the content of five kinds of geochemical pollution elements in soil's mother rock, soil, living plants and litters, the ecological geochemical early warning simulation was carried through, in which the main artificial alder forests built in the construction...
To research the spatial distribution characteristics and variation of fluorine ion concentration in the groundwater of Huhhot, this paper analyzes the spatial variability of that though geostatistics. The research sample indicates that the fluorine content of shallow groundwater in Huhhot is already 23% higher than the national standard of drinking water and shows remarkable spatial variability. Also,...
In service economy era, servitization has been a worldwide trend in manufacturing. As the core action of marketing, exchange determines the motivation and hierarchical division of offering servitization. According to main factors of exchange, this paper gives a hierarchical division of the concept of servitization, and classifies different terms that describe the phenomenon in the field of marketing...
Synthesis problem of variable structure control (VSC) for discrete-time singular system (DSS) with internal parameter perturbation and external disturbance is considered in this paper. The dynamic switching function which is used to guarantee the stability of the control system in the switching band is provided. The discrete singular reaching law with dynamic disturbance compensator is designed to...
The two-phase flow of air/oil mixture in the bearing chamber affects the operation stability of engines directly. Particular study of the two-phase flow in the chamber plays a vital role for improving the engine operation safety. Two-phase flow in bearing chamber is simulated numerically using VOF model. Surface tension between two phases has been added into the momentum equation as the source term...
It is opinion that climate change on the planet is largely dependent on the increase of greenhouse gases in the atmosphere and that this effect is related largely to human activities that make CO2. Reducing the discharge of CO2 has therefore become a common objective of the international community, including China. There are various actions that are proposed for the reduction of the gas: increased...
A new cable wireless monitoring temperature scheme is proposed, which can monitor cable parameters of various cable, and can be monitored dynamically and transmitted to the dispatch center through the network which consisted with ZigBee network and CAN bus. Then, cable failures early warning function is realized. Simulation and piracies proved that reliability and flexibility of the system is increased,...
Organic matter (OM) is important for ammonium sorption in lake sediments, but as a matter of fact, there is no general consensus about the effects of OM on ammonium adsorption behavior. In this study, the sediment samples of different OM contents and the different components of organic matter were gained from Wuli Lake sediment through pretreatment, then the ammonium adsorption kinetics and thermodynamics...
Influence of soil organic matter (SOM) on the adsorption, desorption and transport of polycyclic aromatic hydrocarbons (PAHs) has already been given full investigation in soils. In this paper, High Performance Liquid Chromatography (HPLC) was used to detected and elucidate aqueous leaching of PAHs in different types of soil with soil columns, which enhanced understanding on transport of PAHs appreciably...
Recent developments in web service technologies have shown promise for developing large scale data management system. Web services can significantly add some desirable characteristics such as openness, interoperability, scalability, implementation-language independent etc. This work proposed an efficient system architecture prototype for seismic data management, which is organized as four different...
In this paper, based on D. X. Cao[Numerical Mathematics A Journal of Chinese Universities, 2002, 24(4): 359-365], an interval algorithm is developed for finding all global solutions of the unconstrained continuous minimax problems, in which the objective functions are C1 functions, by structuring the interval extension of the objection function and region deletion test rules, combining bisection rules...
This paper improves CNM algorithm to detect community structure on weighted network. Based on the link weight and vertex weight, algorithm design defines a new Q-function to calculate community modularity, the type of communities were classified by finding the Q peak. We have generated networks with known community structure A,B and C(different sizes), to test if the algorithms can recognize and extract...
In the bridges' entire life cycle, it is inevitable for bridges to be degraded and damaged because of the environmental factors and the conditions of usage. Taking more than 1500 concrete bridges in Beijing as the background projects, it is summarized that the typical diseases, the manifestations of functional damages and structural damages of concrete bridges. Among them, the functional injury accounted...
An approach of gathering parking grade is explained. It gathers parking grade using SCA61T sensor, and the grade information is transmitted to center ECU by CAN bus real time. As a result, the electric parking system can control parking strength real time. Using the method, parking vehicle can be brought suitable restrict strength when the vehicle on different grades. It can make electric parking...
This paper presents regional trends in vegetation greenness in Inner Mongolia Autonomous Region, semiarid areas of China. We used NOAA GIMMS NDVI data from 1982 to 2006 to explore the relationship between vegetation greenness change and climatic and anthropogenic factors based on the analyses of meteorological data, high spatial resolution remotely sensed data and local economic statistical data....
In order to solve the existing curriculum resource issues on the internet, such as lack of semantic, simple resource structure, the ineffective share of curriculum resources. Protégé tools are used to construct domain ontology of curriculum, and to put forward a curriculum resource management framework based on ontology. In this framework, the curriculum ontology is used to describe the curriculum...
ROI of BT projects is involved in the benefit distribution and risk allocation between BT project initiator (local government or local governmental branch) and BT project investor and constractor (the private sector), and is related to the success or failure of BT projects. Up to now, the government departments have not promulgated laws or regulations about how to make sure ROI of BT project. So how...
We present a novel worm propagation model for the Internet to analyze and predict the spreading behavior of worms. In this model, a new host state, Exposed, is introduced into this model and the variable infection rate is adopted. The dynamical equation is also built and verified by the MATLAB simulation program. In addition, the new model is compared with the famous Two-Factor worm propagation model...
Various forms of underwater low-resistance scarfskins provide abundant shape resources for the manufacturing of the biomimetic drag-reducing surfaces. The drag-reducing surface based on scale groove of shark skin is one of the issue researches. A new bio- machining technology named bio-replicated forming based on creatural scarfskins was presented in this paper. Taking the skin of Carcharhinus brachyurous...
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