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71.
从实际出发分析了基于Windows Mobile平台的维吾尔文产品管理系统,着重研究Windows Mobile的应用开发,而且研究了维吾尔文的书写特点、手机输入法设计中的难点、以及不等宽,设计实现了具有不同编辑方向的维、汉、英、多语种智能手机的混合输入和屏幕显示。在系统的设计和实现过程中引入Windows Mobile技术和SQL Server Mobile数据库技术来解决相关数据的存储和处理问题。在基于.NET compact Framework的智能设备开发框架下,使用Pocket outlook对象模型,实现对客户的便捷与通讯功能。 相似文献
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An effect of oxygen species formed from O2, N2O and NO on the selectivity of the catalytic oxidation of ammonia was studied over a polycrystalline Pt catalyst using the temporal analysis of products (TAP) reactor. The transient experiments were performed in the temperature range between 773 and 1073 K in a sequential pulse mode with a time interval of 0.2 s between the pulses of the oxidant (O2, N2O and NO) and NH3. In contrast to adsorbed oxygen species formed from NO, those from O2 and N2O reacted with ammonia yielding NO. It is suggested that the difference between these oxidising agents may be related to the different active sites for dissociation of O2, N2O and NO, where oxygen species of various Pt-O strength are formed. Weaker bound oxygen species, which are active for NO formation, originate from O2 and N2O rather than from NO. These species may be of bi-atomic nature. 相似文献
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Product family design and product configuration based on data mining technology is identified as an intelligent and automated means to improve the efficiency of product development. However, few of previous literatures have proposed systematic product family design method based on data mining technology. To make up for this deficiency, this research put forward a systematic data-mining-based method for product family design and product configuration. First, the customer requirement information and product engineering information in the historical order are formatted into structural data. Second, principal component analysis is performed on historical orders to extract the customers' differentiated needs. Third, association rule algorithm is introduced to mine the rules between differentiated needs and module instances in the historical orders, thus obtained the configuration knowledge between customer needs and product engineer. Forth, the mined rules are used to construct association rule-based classifier (CBA) that is employed to sort out the best product configuration schemes as popular product variants. Fifth, sequence alignment technique is employed to identify modules for popular product variants, so that the module instances are divided into optional, common and special module, respectively, thereby the product platform is generated based on common modules. Finally, according to new customer needs, the CBA classifier is used to recommend the best configuration schemes, and then popular product variants are configured based on the product platform. The feasibility of the proposed method is demonstrated by the product family design example of desktop computer hosts. 相似文献
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A tool for modelling and simulation of product development processes has to be able to map the specific stochastic behaviour of these processes. Taking this into consideration, the paper presents an approach to adaptive modelling and simulation using Petri nets. New to this approach is that the process model is generated dynamically at simulation run time. Based on the effective premises and boundary conditions, generic processes are selected, parameterised, and integrated as an instance into the model. Thereby, the model is adapted to its present state at simulation run time. This enhances the quality of the simulation results. 相似文献