IJEME Vol. 1, No. 5, Nov. 2011
Cover page and Table of Contents: PDF (size: 575KB)
Mind Evolution Algorithm (MEA) imitates the human mind evolution by using similartaxis and dissimilation operations, which overcomes the prematurity and improves searching efficiency. But the generation of the initial population is blind and the addition of naturally washed out temporary subpopulations is random. This paper improved MEA by introducing chaos and difference into it and proposed Chaos Difference Mind Evolution Algorithm (CDMEA), which brought adequate diversity to the initial population and saved the excellent genes in the evolution. Then CDMEA is used in the synthesis of sparse antenna arrays. The excellent results confirmed the effectiveness, flexibility and suitability of CDMEA.[...] Read more.
Rapid increases in the complexity of algorithms for real-time signal processing applications have made multi-processors parallel processing technology needed. This paper proposes a design of high-performance real-time bus (RTB), based on which distributed shared memory (DSM) mechanism is established to implement data exchange among multiple processors. Adopting DSM mechanism can reduce the software overhead and improve data processing performance significantly. Definition and implementation details of RTB and data transmission model are discussed. Experimental results show the stable data transmission bandwidth is achieved with performance not affected by the increasing number of processors.[...] Read more.
For the requirements of knowledge reuse in product design process, according to the characteristics of the knowledge representation methods, this paper uses ontology knowledge representation method to construct the product design process knowledge model and gives ontology mapping decision strategy which is based on classification. In the basis of choosing "design department" ontology in human resource management as the heterogeneous ontology of "design organization" ontology in product design process management, lists their concepts set and calculates the similarity of matching concept pairs, finally, outputs the mapping relationship table.[...] Read more.
With the continuous development of high technology, architectural design is on the way to paperless digital era. In order to help students grasp and skillfully apply the architectural computer aided design software and cultivate talented architects with the times, this article is going to bring the Tangent software into architectural teaching. On the basis of graphic and elevation design, section design, three-dimensional modeling and so on in architecture, It expounded the early program draft and the control of late deepening program in view of Tangent software, pointing out the interaction between design software and architectural program so as to make students really understand the function of Tangent software and then improve the students' comprehensive skills.[...] Read more.
In this paper, a controlled sinusoidal signal generator (CSSG) based on the direct digital synthesize (DDS) chip-AD9851 is introduced. The CSSG is controlled by MSP430F4250, which is an ultralow-power microcontroller. The micro control unit (MCU) receives 4-20mA current provided by a current transmitter and then computes the frequency value of the input signal. A frequency value is converted to frequency words which are sent to AD9851. Through an amplifier, a sinusoidal signal can be obtained. With changing the value of input current, sinusoidal signal with different frequency value can be generated. Experiments indicate that the system can produce the sinusoidal signal with frequency 1MHz to 2MHz and accuracy 1Hz.[...] Read more.
The author takes the evaluation standard of educational game software（EGS） made by TEEM as an example and analyzes its dimensionality, content and effectiveness. Then the author stresses the enlightenment on the evaluation standard of Chinese EGS about evaluation organization, evaluation scientificity and evaluation efficacy. The aim of this paper is to offer guidance to those enterprises producing EGS, schools and families purchasing EGS, teachers and students using EGS and promote Chinese evaluation standard to match international standard.[...] Read more.
Network engineering was a new discipline for undergraduate in china. There were some imperfections in the curriculum of network engineering in application-oriented undergraduate teaching. Based on the analysis of training goals of network engineering in application-oriented undergraduate teaching, three professional directions were brought forward. Professional direction training was integrated from the teaching content in the forth year. Professional skills and vocational quality were the same important in the curriculum.[...] Read more.
E-learning environment has incomparable advantages compared to traditional education, which could make up for traditional educational means and methods in preparing students multiple intelligence shortcomings, in line with our current educational status quo. The research on e-learning environment design based on the theory of multiple intelligence lies in both students' multiple intelligences, and enhancing network education quality, which has an important practical significance. This paper analyzes the inspiration of multi-intelligence theory as for e-learning environment design based on the multiple intelligences theory, which also proposes learning strategies for environmental design and some problems that we should pay attention to.[...] Read more.
This paper researches into the influential factor affecting operating performance of small and medium-sized S&T Enterprises. It is found that the years of operating and the scale of net assets both have a positive effect on the performance, while registered capital has a negative effect. Though the category of industry doesn't exhibit a clear influence on the performance, different ways of financing do affect the performance considerably.[...] Read more.
As the carrier of network education, the network course has the characteristics of shared resource, unlimited time-space domain, multidirectional interaction, and easy cooperation. It meets the new demand of post education to teacher and student, and is indispensable for the nurture of future post-type and combined military personnel. This paper analyses the problems in current network-course of post education from the point of new demand raised by post education and network course building. The view of points, such as organic integrating between traditional education and network education, farther developing and consummating of network education system, enriching teaching material, paying attention to humanity design in the building of network course, and using the positive function of network teaching in post education, are presented too in this paper.[...] Read more.
Language points are explained to students one by one in traditional teaching, and their varieties make the first learning of a computer language rather difficult. All the language points in computer language courses are successive and interdependent, so any defect or misunderstanding would bring barriers to the subsequent learning. Based on the natural way of language acquisition of human beings and iterative models in software engineering, an iterative approach is put forward in this paper in order to maintain the consecutiveness of the language points and help students in their software research and development.[...] Read more.
The latest video coding standard H.264/AVC outperforms previous standards in terms of coding efficiency at cost of higher runtime complexity. When RDO is used, the most time-consuming process in a H.264/AVC encoder is mode decision, where all the intra/inter modes are tested to find the optimal coding mode. In this paper, we present a fast intra mode decision scheme, which first detects the texture direction and only tests a subset of intra modes consistent with detected direction. Experimental results demonstrate that the proposed scheme significantly reduces the overall encoding time with negligible coding performance loss.[...] Read more.