Applied Mechanics and Materials Vols. 63-64

Abstract: This paper theoretically analyzes the transfer impedance of a plane current probe. The plane current probe is an effective device that is used to measure conducted current flowing on the surface of a metal structure. One of the hot topics for plane current probe is to obtain its transfer impedance. Most research concentrates on designing calibration devices and measuring the values of the transfer impedance. However, they all do not carry out theoretical study on transfer impedance. In this paper, the equivalent circuit of the signal detection system of the probe was established based on a transformer model. Furthermore, the expression of transfer impedance was derived from the equivalent circuit. The curve shape of transfer impedance obtained from this study has a good agreement with the measured ones. This fact validates the equivalent circuit and the theoretical formula. Subsequently, influence on the value of transfer impedance was analyzed based on the expression with change of some parameters, e.g., turns of coil winding, dimension of ferrite core, permeability of ferrite core, distributed capacitance. The result gained from the above analysis will provide guidance on the design and application of the plane current probe.

Abstract: With the rapid development of economy in Jilin province, people’s life standard improves steadily. There are lots of factors which influence the growth of economy. We proposed a multiple variable linear regression methodology in this paper to identify the corresponding influence factors which concerning to the growth of GDP in Jilin province. By using multiple linear regression method, the key influence factors which are concern to the growth of GDP in Jilin province are identified, which include primary industry, secondary industry, tertiary industry and buildings price. We can draw conclusions that the growth rate of GDP is positive linear correlation to tertiary industry and buildings price. At the same time, tertiary industry is a more important influence factor than buildings’ price.

Abstract: In recent years, the economy grows rapidly in Jilin province, and people’s life improves steadily, but at the same time, people has to face a sever employment situation. The changes on trend and characteristics of employment elasticity become flexible and fuzzy to predict with the development of society. By using linear regression methodology, employment situation of Jilin province is analyzed by taking primary industry employment elasticity, secondary industry employment elasticity, and tertiary industry employment elasticity into account. The calculation results show that three strata of industry employment elasticity has an increasing trend, and the total elasticity of employment is mainly driven by the second and tertiary industries.

Abstract: Robot path planning is one of the core parts of robot research fields. A * algorithm is a typical heuristic search algorithm in Artificial Intelligence. In this paper, the model of robot path planning is founded based on A* algorithm and raster model, thus the optimal path is found in the process of robot traversing. The simulation result shows the correctness and efficiency of the path planning.

Abstract: Examination management system is a system of scheduling classrooms for college students to take normal examinations and rehabilitation examinations under the circumstance of credits. The system is divided into foreground and background, and the former has the functions to inquire and display examination information, while the latter has the functions to complete the arrangement of the examination messages. And it finally generates target database for the foreground, thus meeting the needs of the work for the educational administration department, overcoming the insufficiency of manual arrangement, improving the working efficiency, reducing the errors to meet the present work requirement.

Abstract: Porous TiOB_2B films were dip-coated on glass substrate by sol-gel process. Ti(OCB_4BHB_9B)B_4B was used as the titanium source and PEG1000 was used as a template. Surface morphology and UV-Vis transmittance spectra were investigated as the factor of the number of TiOB_2B layers. The films containing 1 to 3 TiOB_2B layers seem to be quite smooth with very slight roughness. While on the surface of the films containing 4 to 6 TiOB_2B layers, particles aggregated on the surface accompanied with the formation of small holes. The adsorption edges of the coated films moved to higher wavelength region with increasing film layers. In the wavelength range from 350 to 450 nm, transmittances of the films declined first and then went up when the films got thicker.

Abstract: Porous TiO₂ films were prepared through dip-coating on glass substrates using composite templates of PEG and ODA. Photocatalytic activity of the photocatalyst was evaluated by measuring removal rate of aqueous methyl orange under UV light irradiation. The addition of composite templates had obvious influence on surface morphology of the films. Layered and porous structures formed in the surface due to the function of templates. When the amount of PEG in the composite template increased from 0.1 g to 1.9 g, adsorption edge of the films moved to longer wavelength region. When the amount of PEG increased to 1.0 g, there were sharp decrease of specific surface area and cumulative pore volume. The improving photocatalytic activity as a result of addition of PEG can be noticed.

Abstract: The issue under discussion in this paper results from a practical task faced with research institutions and manufacturers for gas station equipment, and will be divided into two parts: 1. In order to observe the impact of storage tank displacement on tank gage table, the author, on the premise of the displacements parameters, to detect the corresponding values of oil level and volume and analyze the law of change of the tank gage table through modeling and provided a revised tank gage table. The above belongs to direct problem. 2. Based on the data from practical detection, the paper will identify how the displacement occurred and the level of the displacement. Meanwhile, the measure and result of calibration will be offered. All the above belongs to inverse problem.

Abstract: We present a new architecture for information transformation that leads practical information refinery to a abstract level in order to support concepts-based information finding for the Grid. The overall goal of the architecture is to provide abstract content descriptions of network resource to achIRve precise information finding.

Abstract: Concept integration, connection, and reuse are at the heart of Web services. The connection between two concepts can be achieved easily provided both share the same theorematic space. This in turn can be achieved by reusing constructs from foundational concepts and standard domain theme. Although the current produce of concept development methods and tools have made it a lot easier to build a new concept, reusing concepts from existing concepts remains difficult. The main reasons for this are the uncertainty in presentation conversions of concepts from foundational concepts. In this paper we have introduced a novel method for sense certainty to help the human expert in presentation conversion.