Advanced Materials Research Vol. 442

Abstract: To explore the effect of equivalence ratio on the propagation process of combustible gas in the venting tube, in the present study, the κ-ε turbulent model and the combustion models were implemented base on unaltered venting conditions and different equivalence ratio of methane-air. In particular, the numerical simulation results illustrate both speed and pressure were at maximum when equivalence ratio was 1.0. However, methane-air didn't reach the most sufficient combustion when equivalence ratio was 1.0. It was possible that the pressure release caught the equivalence ratio change and failed to generate detonation.

Abstract: Home automation is a common area of interest the researchers and engineers work, of course, the consumer. Today, intelligent household system is commonly found in many homes in many countries around the world. This system not only provides a high level of control household appliances, also should try to reduce the waste electricity. Electric power communication (PLC) is a kind of common technology used in home automation system, household electric wire reuse for communication. But the current system puts forward the shortcomings of the need to improve. We introduced the design a new generation of intelligent household system that will give consumers with a huge characteristics and businessman. The main characteristics of the system are based on the Internet control, logging-facilities.

Abstract: Designers are being increasingly pressurised to design buildings with high standards of energy e1ciency, performance and comfort. Computers are seen as an important modern design tool that can help lighten some of the designers' burdens. A myriad of computer applications already exists, ranging from complex 4nite-element applications to simple electronic nomographs. New development in this 4eld tends to be in the areas of integrated building design and knowledge-based systems.Researchers and scientists can develop tools with the potential to greatly enhance the quality of buildings. These tools will however fail if they are not widely accepted and used by designers. Only a few building designers currently exploit the full potential of computer design tools. The general use of computers seems to be restricted to CAD and steady state calculations. This can mainly be attributed to the complexity of, and time required for using the existing tools.

Abstract: As that of coordination and ISO 15288, discipline system engineering and software engineering processes, methods have a lot in common, and concerns. In most of the system software interest, now offers an important function, more and more is the most significant factors determine the non-functional attributes. In the implementation of the system collection and failure are often attributed to the system and/or software engineering recovery. Need to use systems engineering software design and development, and need to incorporate software engineering concepts into system engineering, suggests that the decision of the two disciplines the close relationship between is appropriate. This article describes a definite theory integrating the two disciplines, defines a framework on establishing a vocabulary integration, and gives the use of this framework preliminary results to describe the system and software integration of defense plans.

Abstract: In this paper, we introduce the swarm intelligence computation and its applications in power system. Because swarm intelligence does not need any precondition of centralized control and global model, it is very suitable to solve large scale power system nonlinear optimization problems which are hard to establish effective formalized models and difficult to be solved by traditional methods. In order to apply swarm intelligence better in power system, we propose two central research directions in the future: (1) The mathematical basis of swarm intelligence is unsubstantial and it lacks profound and pervasive theoretical analysis, so we must analysis its convergence and selection of parameters, especially the parameter selection of large scale power system optimization problems. (2) Because swarm intelligence is internally parallel, we should realize it based on the parallel computation theory. This work will also be helpful for the real-time need of power system.

Abstract: To lower the cost of the gravity passive navigation system, a rate azimuth inertial platform with a gravity sensor on it was put forward to constitute a navigator with gravity measuring, combined with digital gravity map, the system would come to a simple passive navigation system To master the influence of deterministic system error to navigation system, so can accurately present the precision index of gyroscopes and accelerometers, which are the main components of rate azimuth platform inertial navigation system, and initial calibration precision. With the error equations under static state, the characteristic equation of rate azimuth platform inertial navigation system is set up. Based on the solutions of the error equation, and the system error characteristics caused by the initial navigation error are deduced with analytical method.

Abstract: To analyze and visualize biological networks are hot in bioinformatics. Fast grid layout is a new highly efficient visualization algorithm that has advantages in generating compact layouts with biologically comprehensible modules of biochemical networks. The time complexity analyses are very important to visualization algorithm research. In this paper, we estimated analytically the time complexity of fast grid layout in detail. Experiment results for biological networks of different sizes testified the estimate. Compared with original grid layout, we also discussed the main reasons of ensuring good performance of fast grid layout.

Abstract: A GPS/inertial navigation system design scheme is introduced. Combination of DSP and FPGA is used on the navigation board, and micro inertial navigation measuring element --ADIS16405 is used to sample required navigation data. DSP mainly implements navigation calculating based on navigation data, and realizes different navigation algorithms; FPGA in the system plays centeral control role, and not only samples IMU and GPS data, but also synchronize IMU and GPS in the real time, and preprocess and packet the navigation data. This paper also introduces the design of the software on FPGA. Practice proves that the scheme is feasible, and achieves the good balance between the cost, reliability and efficiency.

Abstract: Firstly, application of SLP and SHA method in design course of general layout is introduced including basic element analysis, logistics analysis, procedure analysis, interrelation analysis. The method is offered which design the layout rearrangement of enterprise logistics based on the combination of SLP and SHA. Then aiming at achieving the lowest transportation amount, analyzing the producing procedure and logistics status in a certain corporation, the installation and logistics systems are rearranged and reassessed in a department of the plant adopting the theory of SLP and SHA. Through contrasting, the result is found that workshop attains the logistics smooth, transport the route the most short, shorten to produce period and lower the production cost.

Abstract: In order to promote the application of two dimensional barcode on mobile phone, this paper uses the popular Android technology, and researches QR code format and the decode process of the QR code; and then designs 2D bar code recognition system based on the decode library Zxing. After testing, it is proved that the system has good generality and low resource consuming, and the software of itself is only 140 K.