针对非计算机专业开设的"计算机软件技术基础"课程在教学中存在的问题,提出了案例教学、信息化教学与实践教学相结合的教学方法,并在其基础上对评价体系进行了改革,以突出"学生为主体"的教育理念,对近两届的学生成绩进行了统计比较,从分析可得,新的教学方法有效地促进了学生的学习积极性与参与性.
For the lack of node energy in BRSN model,a reputation calculating model of wireless sensor network is designed on the basis of the node′s behavior.In order to evaluate a node′s reputation,the model firstly calculates direct trust parameters from the node′s behavior,then uses indirect trust parameters as reference,and finally integrates these parameters with energy reputation to get the synthetic reputation evaluation value.If the evaluation value is larger than or equal to the specified threshold,we can confirm the node is credible.The simulation experimental results show the model can help to identify the credit grade of the examined node so as to prevent the malicious defamation;to increase the system′s security and reliability;and to embody the impartiality of the network.
The bilingual teaching for core-course of engineering specialty in universities is discussed. This paper discusses some methods for bilingual teaching of Data Structure basing on practical experiences, mainly in the choosing of teaching materials, instructing manner, experiment design and synthetic examination and grade
The rational storage of ontology is the premise of the shareable use of ontology.Under current ontology storage schema,some problems such as difficult maintenance,low query and inference speed may appear after OWL ontology storing in relational database.Firstly current ontology storage methods are analyzed.Secondly ontology storage schema is designed according to OWL ontology characteristic.The existing design is improved by setting up separate class table,appending relational restrict table T-restrict.As a result,the storage of OWL classes,properties and the complex relations among them is easily realized.Lastly an example of school OWL ontology storage has indicated that the storage method is simple.The query test has proved that the retrieval efficiency is increased.All these explain that the design is feasible.
Ontology-based semantic annotation tools employ existing ontology to insert semantic meta-data for making the contents of Web pages machine-understandable.This is an effective way to promote current Web to Semantic Web.But most of annotation tools just use existing ontology to annotate Web pages without ontology editing operation,which creates new ontology or appending new concepts to existing ontology so as to increase annotation vocabulary.This paper researches on characteristics and problems existing in ontology editing along with annotation process,and discusses OWL ontology editing in term of realization.
According to years of teaching, the writer generalizes some review points and suggestions for various C language test, not only to the student who is attending the C language examination, but also to the student who is studing the C language.