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关键词： UML技术   信息系统   需求分析  

摘要： 在工会综合信息系统的研发中,运用UML技术进行全面的业务建模,为系统的总体设计打下良好基础。方法:对UML技术进行灵活运用,主要通过用例图、活动图、状态图等进行系统业务建模。结论:UML技术在软件研发需求分析及业务建模过程中能起到关键作用,帮助研发人员缩短系统分析时间,减少改进成本,使业务模型能尽可能符合现实需要。

关键词： 道路桥梁设计   结构化设计   应用分析  

摘要： 在公路桥梁的建设之中,已经出现了很多的发展方向。其中结构化的设计在道路桥梁设计之中占据的重要的部分,其也是在现在生活之中,最主要的工作和设计方式。本文将对结构化设计在道路桥梁中应用的作用,和实际应用的方式展开探究。希望可以通过运动的探究,让结构化设计在道路桥梁设计之中体现出更好的工作效率,并且让人们的生活质量得到大幅度的提升。

关键词： 软件工程   "互联网+"大赛作品   教学模式   翻转课堂  

摘要： 软件工程课程是理论与应用联系密切的一门课程,以软件生命周期为主线,应用各种技术方法进行合理化需求分析、开发、测试、维护.该门课程的学习离不开案例导向,案例选取合理至关重要,"互联网+"大学生创新创业大赛获奖作品作为教学的案例选择具有多方面的合理性,本文针对大赛作品作案例分析,引导学生学习软件工程课程,从理论教学到实验教学,再到综合实训,不同阶段的学习和训练,为应用型人才培养奠定了基础.

关键词： Multimodal data fusion   deep learning   classification   data loss  

摘要： Classification using multimodal data arises in many machine learning applications. It is crucial not only to model cross-modal relationship effectively but also to ensure robustness against loss of part of data or modalities. In this paper, we propose a novel deep learning-based multimodal fusion architecture for classification tasks, which guarantees compatibility with any kind of learning models, deals with cross-modal information carefully, and prevents performance degradation due to partial absence of data. We employ two datasets for multimodal classification tasks, build models based on our architecture and other state-of-the-art models, and analyze their performance on various situations. The results show that our architecture outperforms the other multimodal fusion architectures when some parts of data are not available.

关键词： Fault diagnosis   High-speed train   Variational mode decomposition   Multi-scale structure   Neural network  

摘要： The performance degradation and failure of high-speed train bogie would directly threaten the safe long-term operation of the vehicle. The fault diagnosis based on vibration signals is encountering difficulties as nonlinearity, high complexity, strong coupling, and high uncertainty. To address these challenges, this paper proposes a multi-perspective architecture for fault diagnosis, based on variational mode decomposition and enhanced multi-scale convolutional neural network. The proposed method provides multiple perspectives for the multi-channel and multi-component signal analysis, including perspectives from channel, component and time scale, with low input dimension and reduced model complexity. Signal features under different perspectives can be adaptively extracted. The effectiveness of the proposed method is validated on high-speed train fault data and rolling element bearings dataset. The experimental results show that the proposed scheme not only improves the accuracy of fault diagnosis but also has superior noise robustness which could be valuable for practical applications of complex systems, especially in dynamic environments.

关键词： raw poultry manure   pyrolysis   biochar   characterization   leaching   phosphorus   potassium  

摘要： Raw poultry manure (RPM) and its derived biochars at temperatures of 400 (B400) and 600 degrees C (B600) were physico-chemically characterized, and their ability to release nutrients was assessed under static conditions. The experimental results showed that RPM pyrolysis operation significantly affects its morphology, surface charges, and area, as well as its functional groups contents, which in turn influences its nutrient release ability. The batch experiments indicated that nutrient release from the RPM as well as biochars attains a pseudo-equilibrium state after a contact time of about 48 h. RPM pyrolysis increased phosphorus stability in residual biochars and, in contrast, transformed potassium to a more leachable form. For instance, at this contact time, P- and K-released amounts passed from 5.1 and 25.6 mg g(-1) for RPM to only 3.8 and more than 43.3 mg g(-1) for B400, respectively. On the other hand, six successive leaching batch experiments with a duration of 48 h each showed that P and K release from the produced biochars was a very slow process since negligible amounts continued to be released even after a total duration of 12 days. All these results suggest that RPM-derived biochars have specific physico-chemical characteristics allowing them to be used in agriculture as low-cost and slow-release fertilizers.

关键词： Cloud computing   Software tools   Databases   Cognition   Web services   Access control  

摘要： Formal methods are mathematically based approaches for specifying, building, and reasoning about software. Despite 50 years of research and development, formal methods have had only limited impact in industry. While we have seen success in such domains as microprocessor design and aerospace (e.g., proofs of security properties for helicopter control systems1), we have not seen wide adoption of formal methods for large and complex systems, such as web services, industrial automation, or enterprise support software.

关键词： MOOC   翻转课堂   教学改革  

摘要： 针对目前软件工程课程教学的现状,结合当前MOOC与翻转课堂在教学中的应用,进行基于MOOC的翻转课堂教学模式探究,以期通过“MOOC+翻转课堂”的先进理念实现更好的教学效果。