IJEME Vol. 1, No. 3, Sep. 2011
Cover page and Table of Contents: PDF (size: 524KB)
Combined with the actual requirements of gas pipe network management, based on the analysis of significance and effect on establishing geographic information system in Daqing nature-gas company, overall design of geographic information system in Daqing oil field gas pipe network, network structure and the analysis of spatial data and the attribute data are accomplished, what’s more, graphic and attribute data is unified to store, process and analyse, using geographic information system as technical support, at the same time, the spatial database is established, which is for the maintenance and planning of gas pipe network, piping design, pipeline construction, the completion of information, the repairing decision, as well as, inquiring the relative attribute data. This paper introduces the data and network structure, in addition to, security of geographic information system in Daqing oil field gas pipe network specifically, the system chooses MS Windows 2000 (Advanced) Server or UNIX as operating system, furthermore, using other geographic information system softwares to build geographic information development platform, giving priority to the ArcGIS of ESRI company. The result shows that the development of project has reached the expected goal, laying the solid foundation for system subsequent development and further researching work.[...] Read more.
The paper begins with the concept and ideas of multimedia teaching and computer-aided multimedia teaching, illustrates the principles of optimal integration between computer-aided multimedia teaching and traditional teaching, stresses how to balance the relationship between the learners and the teacher and how to benift from the teaching process, all these have just been shown with the figures and been developed by taking translation teaching as the sample, and the constructivist theory of scaffolding instruction has also been adopted as the theory basis, espeiclly to the the design, the Organization and the implement of the multimedia assisted translation teaching.[...] Read more.
The purpose of this paper was to provide a method for student evaluations of teaching quality. Firstly, the paper introduced cluster analysis and factor analysis theory from the point of view mathematics. Secondly, the paper established a comprehensive evaluation of teaching quality model based on factor analysis and cluster analysis and discussed the process of the model. At last, as an illustration, data from twenty teachers of Xi’an College of Post and Telecommunications were analyzed and modeled by SPSS software. The results from the example show that the proposed approach is efficient. This paper has provided a reference operation model and method for student evaluation of teaching quality.[...] Read more.
Melamine (2,4,6-triamino-1,3,5-triazine) is a nitrogen-rich chemical implicated in the pet and human food recalls and in the global food safety scares involving milk products. Due to the serious health concerns associated with melamine consumption and the extensive scope of affected products, rapid and sensitive methods to detect melamine’s presence are essential. We propose the use of spectroscopy data – produced by near-infrared (near-IR/NIR) and mid-infrared (mid-IR/MIR) spectroscopies, in particular – for melamine detection in complex dairy matrixes. It was found that infrared spectroscopy is an effective tool to detect melamine in liquid milk. The limit of detection (LOD) below 1 ppm (0.76±0.11 ppm) can be reached if a correct spectrum pre-processing (pre-treatment) technique and a correct multivariate (MDA) algorithm: partial least squares regression (PLS), polynomial PLS (Poly-PLS), or artificial neural network (ANN) – is used for spectrum analysis. The relationship between MIR/NIR spectrum of milk product and melamine content is non-linear. So, non-linear regression methods are needed to correctly predict the triazine-derivative content. It can be concluded that mid- and near-infrared spectroscopy can be regarded as a quick, sensitive, robust, and low-cost method for liquid milk analysis. The technique can be applied for the automation of milk analysis.[...] Read more.
Right now, heterogeneous & reconfigurable computing is a research hot in the area of high performance computing. Due to the heterogeneity of application tasks and reconfigurability of system architecture, performance analysis for heterogeneous & reconfigurable computing becomes rather difficult. Unfortunately, the existing techniques and methods are no longer suitable for use. This paper presents a performance analysis method based on task scheduling. It builds on system architecture model and task model of heterogeneous & reconfigurable computing. By making use of heterogeneity matching matrix and reconfigurability coupling matrix we achieve optimal selection and matching between computational tasks and processing units. Through task scheduling algorithm, the completion time of application task run on heterogeneous & reconfigurable computing system can be calculated. Finally, we carry out case study.[...] Read more.
Web Services Business Process Execution Language (BPEL) modeling technique based on colored Petri net is proposed in this paper. Introduce a BPEL modeling principle based on colored Petri net, and a method of generating BPEL code from the colored Petri net. CPN Tools is used to build the colored Petri net model. At last, the case study of booking ticket was provided to illustrate the applicability of the transformation algorithm. The generated BPEL can run on Oracle BPEL server.[...] Read more.
In experiment of network engineering and network construction, students are required to configure Cisco network equipment. Due to limit of lab environment, amount of equipment is not enough and some experiments require much more expensive and higher level equipment that are not practical to purchase and maintain. It is meaningful to use network equipment simulator on PCs. The proposed platform utilizes Dynamips simulator to simulate routers and switches of Cisco product series. Dynamips supports directly loading Cisco IOS images and provides configuration interface as true equipment’s. It has very good teaching effect in experiment of network engineering. And success of the proposed platform shows it can be used in other network related courses.[...] Read more.
The information and computing science is the cross-disciplinary of mathematics, information science, planning and control and computing science. The author summarized the experiences through several years teaching practice, analyzed the current situation of the speciality with the actual situation, pointed out some problems in professional curriculum and students’ learning , presented some opinions on o guiding principles in teaching, teaching content and teaching methods . Teachers should play the advantage that the students of this specialty with a solid theoretical foundation in mathematics, content some classic mathematics problems into study of programming languages, combine the computer theory with mathematical theory, optimize the curriculum design subjects , penetrate ideas and methods of software engineering into the teaching experiment. Under the guidance of these opinions, we have gotten some good teaching results.[...] Read more.
Differential Evolution algorithm is a new competitive heuristic optimization algorithm in the continuous field. The operators in the original Differential Evolution are simple; however, these operators make it impossible to use the Differential Evolution in the binary space directly. Based on the analysis of problems led by the mutation operator of the original Differential Evolution in the binary space, a new mutation operator was proposed to enable this optimization technique can be used in binary space. The new mutation operator, which is called semi-probability mutation operator, is a combination of the original mutation operator and a new probability-based defined operator. Initial experimental results of two different combinatorial optimization problems show its effectiveness and validity.[...] Read more.
The new learning method of "Blended Learning" is widely applied. It integratess two typical forms of traditional classroom teaching and online teaching. How to unify them effectively? We explored the blended learning model .In the course of "Basic Program Design" we made an attempt for two years by using the example of teaching practice. We emphasized on the rates of attendance, including attendance in classroom and studying records on E-Learning. Student performance in classroom was recorded and immediately uploaded to E-learning platform. The teaching effectiveness was evaluated by thoroughly disserting in every detail of teaching, etc. Through the contrast, the quite good effect was obtained. This was the initial attempt to reform the learning model. In the future of teaching career, the effectiveness of blended learning model will be further explored in different courses.[...] Read more.
The study creates collaborative learning environments with Mind Map, Blog and Wiki based on the curriculum named learning science and technology. Participants are 117 college students from Ningbo University. Case study and Questionnaires reveal using new technologies can support collaborative learning for them and improve their collaborative awareness and capability. In addition, learning technologies brings about the cognitive load in the learning process so that collaborative learning is not deep enough.[...] Read more.
An improved multi-objective evolutionary algorithm with the hybrid strategies is presented in this paper for multi-objective optimization problems. The evolution process is divided into initial exploration stage, the middle feedback stage and the accelerating convergence stage by the amount of non-dominated individuals in the population. The hybrid strategies and adaptive population structure are employed to improve the behavior of the algorithm at the different stages. The proposed algorithm is validated by 3 benchmark test problems. Compared with three other famous multi-objective algorithms by two quality indicators, the proposed algorithm achieves competitive results.[...] Read more.