Advanced Materials Research Vols. 219-220

Abstract: Based on a kind of new intelligent controller for industrial Ethernet: ICIE (Intelligent Controller for Industrial Ethernet), this paper proposed a new mechanism to minimize the congestion which is based on the taking an adaptive decision during transferring multicast messages by IGMP snooping. It has a further discussion on services design on the switch. And it analyzes on the implementation for switch management for ICIE. It is through the external devices solicitation of join messages that allow the IGMP Snooping component to correctly decipher on which ports the downstream listeners are connected.

Abstract: In this thesis we draw fuzzy mathematic methods into the diagnosis of failures of WP-jet engine ability, bring forward setting up the fuzzy membership grade method which was based on the weight statistical, found the fuzzy diagnostic model, resolve to several malfunctions, how nicety to find cause failure really reason, and proffer scientific and feasible method to the airplane failure diagnosis service.

Abstract: This article introduces applications of 3S, Geographical Information System (GIS), Global Position System (GPS) and Remote Sensing (RS), in river’s flood control. Take revising the Lower Yellow River’s 1:50 000 riverway topographic maps as an example, the author elaborates how to use 3S to update the existing maps. It has shown that update of maps based on 3S is short in work period, cheap in cost and simple in process. Moreover, the revised topographic maps are with high precision and they can meet the urgent data requirements of Yellow River’s flood control. It can also provide a strong data support for the construction of Digital Yellow River.

Abstract: The mechanism of oil flow electrification in transformers was described in this paper. The mechanism of oil flow electrification in transformers could be understood from the effect of the oil flow’s movement and the electromotive action of AC electric field. The electric polarity of oil flow and the insulating layer were mainly depended on the state of charged cations and anions in oil, while the surface characteristics of solid materials only played a supporting adsorption role.

Abstract: As a typical application layer protocol of CAN-bus, CANopen has been widely accepted in many fields. In this paper, CanFestival, which is a kind of open-source CANopen stack, is briefly introduced. The implementation scheme of CANopen slave node is proposed, which is based on a kind of AVR microcontroller-AT90CAN128 and open-source CANopen stack-CanFestival. In this paper the hardware design of slave node and the open-source protocol stack transplant have completed successfully. The debugging experiment of this slave node communication has been carried out, and the correctness of the scheme of hardware design and software transplant is verified by debugging experiment results in this paper.

Abstract: It is studied the collected heat by collectors fixed on the outside wall of balconies when the shape and direction of balconies, and inclination angle of collectors are changed. Total heat collected by three walls of the rectangle balcony toward southeast or southwest is more than the one collected under other conditions. Total heat collected by rectangle balcony toward south would be increased when the inclination angles β of collectors are reduced. As β=70°, and the collectors were installed only on the south wall, to make water temperature above 60 °C in 150 L tank, extra energy needed is equivalent to 46.5 kg/a standard coal; if collectors were installed outside three walls of balcony, extra energy is not needed.

Abstract: To support automated Web service composition, it is compelling to provide a template, or model that dictates the ways in which services can be composed. In this paper, a novel composition model based on the relative vector is proposed, where individual services, composite services, and user objectives are described with the relative vectors, through a series of operators defined on the relative vector, available composite services can be found, and how much they meet user objectives can be evaluated. A significant advantage of our approach is that many existing optimization methods can be used to search optimized compositions, where parallel or choice structure is enabled, individual service with multiple input or output parameters is allowed.

Abstract: With the rapid development of China's telecom industry, the management of domestic enterprises are constantly changing. Operate method was closed to internationalization constantly. In this process, the technology of OLAP plays a very vital role for the development of enterprises. China's telecom industry should depend on the technology of OLAP to get an efficient decision support system to make an accurate in time efficient decision if they want to survive in the world keen competition, and then leading enterprises moving in the right direction. This paper introduced Multi-dimensional analysis technology, Illustrates the application of drilling and rotation Combined with concrete examples. Hope to provide some help for the development of enterprises, promote the rapid development of China's telecom industry through this paper.

Abstract: With the development of technology, the power system of offshore facilities (for short: power system) is increasingly complex, short-circuit current calculation process also becomes more complex. The simple recursive algorithm can not meet the requirements of short-circuit current calculation in complex power system. The paper, basing on the principle of short-circuit current calculation, taking modeling ideas, created an equivalent circuit model of power system for short-circuit current calculation. The equivalent circuit model can be used to simplify the progress of calculation and meet the needs of the power system development.

Abstract: The degree-constrained Euclidean Steiner minimal tree problem was discussed based on the Euclidean Steiner minimal tree with each original point being added with a degree constraint. The property of the problem was analyzed and the implementation process of solving the problem by using the simulated annealing algorithm and the ant algorithm was presented. Both algorithms are coded in Delphi and run on the Windows XP environment. Series of numerical examples were tested and the efficiency of these algorithms was validated.