Advanced Materials Research Vols. 171-172

Abstract: A method for measuring parameters of plant leaf is proposed using image processing software developed with Visual C++6.0 based on image processing techniques and a digital scanner. Images with plant leaves and reference objects are acquired using a digital scanner. Then, image segmentation, component labeling and contour extraction are operated and the image parameters(including area, perimeter, length and width) of the leaves and the reference objects in these images are obtained. According to the real parameters and the image parameters of the reference object, two calibration factors can be gained. Finally, the real parameters of plant leaves are detected with the calibration factors and the image parameters of plant leaves. Measuring experiments on three kinds of leaves are performed and experimental results compared with a typical manual method demonstrate that the the proposed method in this paper is efficient and practical.

Abstract: The problem of software aging widely exists in long-running software system, and the solution is software rejuvenation. Traditional software rejuvenation strategy has some deficiencies in solving the software aging problems of web services, for example, the higher failure rate and the poorer stability. Therefore, considering web services may have the correlation, at first we classified web service relationship and analyzed the relationship of web services by using the association mining algorithm; secondly we established and continuously fixed the aging model of web services by using the error back-propagation network to calculate the aging weights of web services. On this basis, based on the analysis of web services’ priority, call frequency and aging states, we calculated the rejuvenation cost, constructed the rejuvenation queue, and proposed an adaptive rejuvenation strategy of related web services. The experiment result showed that, compared with traditional regeneration strategy, this strategy improved the stability and dependability of web services.

Abstract: Green computing is a new computing model to build the saving-type and low-carbon society, promote the sustainable coordinate development of economy. Through the comparison with green chemistry, this paper proposed a comprehensive evaluation based on green computing, which analyzed the factors of green environment and computer system, such as computing ability, communication ability and storage capacity, and got important conclusions. The methods in the paper could provide service for the green evaluation in the field of IT industry.

Abstract: Cloud computing is a system which provide hardware services, infrastructure services, platform services, software services, storage services to a variety of Internet applications, and SOA is a component model, it will rely on well-defined interfaces between services and linked contract applications. In this paper, combined cloud computing and SOA together closely to form a cloud computing framework model based on SOA, So that the clouds provide in a simple and flexible way to offer services. And it gives a realization of the model. Experiments show that the model is simple, practical and fully reflects the cloud computing and service-oriented architecture advantages.

Abstract: Numerical simulation is used to study the combustion process，temperature distridution and NOx emission for a 10t/h chain boiler with and without flue gas recycle. And at the same time,it is constrasted that differences when flue gas is recycled to the primary wind inlet and to secondry wind inlet.The results show the temperature distridution decreased with flue gas recycle,so there is less NOx emission.And when flue gas is recycled to secondry wind inlet ,the NOx emission dropped mostly. The result offer a reference to design and operate a chain boiler.

Abstract: Based on career study and the disciplinarity in higher education administration, this paper intends to explore the variations of the career patterns of department chairs from differential disciplines. Taking American California State University(CSU) and Chinese North China Electrical University (NCEPU) as examples, it examines the simiarities, differences and limitations related to the overlooking of disciplinarity in regard to choosing of candidates, hiring mechanism, motivation and retention, training program, and post-chair stage. The conclusion is to highlight how university policies can assist chairs during their service: improving recruitment, training, and retention of chairs with the end of making them more enduring and effective leaders of their departments.

Abstract: In this article, it quantizes the extended model of risk control system, using different stages, and supervision is the number and type of relative lack of financial products in China, therefore, it is established as a risk management mechanism in China - the financial institutions to eventually. It provides the theory basis for future development, more feasible operation strategy financial derivatives markets, to achieve a reasonable investment and risk control target as -. This article is: it provides the operability of risk control in the macroscopic and microscopic utilization strategy, unswervingly encourage, monitoring and enforcement of financial derivatives.

Abstract: The goal of distributed heterogeneous information integration is seamless interactions among different business tasks. To achieve the goal, the paper presents a novel middleware framework in service oriented computing (SOC) environment. We analyze the framework in detail and propose three steps for integrating the heterogeneous information resource, including heterogeneous databases. The unified user interface is provided which invoking and binding Web services more dynamically and flexibly in the framework. Especially, we put forward the specific realization process of the core modules of the framework. As an example, we propose the realization of wrapping heterogeneous database as Web services. Finally, we propose the services oriented business integration process and provide the remedial measures for the model of the business process integration. The approach can achieve low cost, flexibility to change and full of system extensibility for distributed heterogeneous information integration.

Abstract: In order to improve the R&D speed of instrument and to reduce the R&D cycle, this paper presents a signal conditioning circuit design method based on case-based reasoning (CBR). The case base stores a number of case circuits, and each circuit’s feature information is described by a set containing at least one information entity; the description methods include: according to the user’s description information on the to-be-generated circuit, generate the first information entity set of to-be-generated circuit; take the first information entity set as the search keywords, search from the case base the case circuit of all or partial information entities of the circuit to be generated; according to the degree of correlation between the preset information entity and the case circuit, obtain the degree of correlation between the first information entity set and the searched case circuit; from the said case circuits searched, select the case circuit whose correlation degree is larger than the correlation threshold value as the target circuit; output the target circuit; through accepting the users’ modification of target circuit, obtain the circuit to be generated. Experimental results show: signal conditioning circuit image generation method, which is based on case reasoning, can effectively improve the efficiency of research and development.

Abstract: For the synchronization of fractional-order chaotic systems with uncertain parameters, a controller based on sliding mode theory is presented. Based on the stability theory of fractional-order system, stability of the proposed method is analyzed. The theory is successfully applied to synchronize fractional Newton-Leipnik chaotic systems with uncertain parameters. The simulation results show the effectiveness of the proposed controller.