应用系统工程原理 促进炼铁技术进步

应用系统工程原理,从铁前抓起,不断进行技术改造,使焦化、烧结、炼铁工艺及设备系统不断优化,从而确保了300m~3高炉的强化冶炼。     

三聚氰胺粉料后处理工艺技术改造

经过技改后的三聚氰胺粉料后处理工艺，克服了以往采用螺旋输送机冷却和正压输送工艺所带来的工作环境恶劣、产品因温度较高而不易包装、机械故障频繁等许多难以解决的问题。改用吸送式气力输送后处理工艺后，既能输送，又能冷却、提纯三聚氰胺，实现自动化包装，并彻底改善工作环境。     

ZAG100－1000／35型全自动压滤机的研制与应用

介绍了ＺＡＧ１００－１０００／３５型全自动压滤机的研制与应用情况．表明机组主机结构、生产能力、自控水平均比引进产品有所提高，整机性能良好。     

易门铜业公司18kt／a粗铜及硫酸车间的技改工程

介绍了易门铜冶炼厂烟气制酸系统的技术改造工程.从工艺流程、设备复核、工艺参数、设备配置等方面阐述了技改的过程.     

Banding formation and eutectic lamellar growth in directional solidified Ni50Al20Fe30 alloy

Banding formation and eutectic lamellar growth in a directionally solidified Ni₅₀Al₂₀Fe₃₀ alloy were investigated. It was found that the banding area consists of two layers. The first layer is a γ layer, while the subsequent one is a γ layer. The composition of various phases around the banding area changes with the solidification process. The banding is formed by two steps process and caused by factors such as the fractions during the sample growth process. It was found that the band was found at relatively low growth rate. Therefore. this study indicates that increasing the growth rate is an effective method to eliminate the band formation. Eutectic lamellae nucleate and grow again after the banding formation. During the initial transition lamellar growth, the relationship between the square lamellar spacing, γ₂, and the distance from, the banding, d, can be described by the following equation: γ₂ = K [1-exp(A.d)] where K and A are constant.     

水电站对外公路设计特点及主要技术标准分析——以乌东德水电站工程为例

水电站对外公路设计既要满足水电站施工期间对外交通运输要求,又要便于水电站完工后移交地方交通部门统一管理。结合金沙江上游乌东德等梯级水电站对外公路设计实践,通过对水电站对外公路的任务、功能及特点的分析,从公路设计等级、设计速度、建筑限界、荷载标准、平曲线设计等方面,对主要技术标准和指标的运用进行了论述;总结了设计经验和体会。对类似工程设计具有参考作用。     

解析用SQL Server存储过程对物料进行批次管理

介绍用后台SQL Server的存储过程实现先进先出的批次管理。     

Potential pedagogical benefits and drawbacks of multimedia use in the English language classroom equipped with interactive whiteboard technology

This paper analyses the process of multimedia integration in English language classrooms equipped with interactive whiteboard (IWB) technology, and offers insights into the theoretical underpinnings of multimedia use in language learning from the perspective of cognitive learning theory. The data discussed here are drawn from a study carried out as part of a PhD research programme at Lancaster University (UK). The study was conducted within an interpretative research paradigm, and data were collected and analysed according to a qualitative approach. In the first part, the paper discusses some perceived pedagogical benefits of adopting a multimedia-oriented approach in the IWB-based classroom. Secondly, it discusses a variety of potential problems related to the use of multimedia resources in the language classroom in question. Finally, the paper draws upon the literature on multimedia learning to address the potential pedagogical implications of these research findings.     

Linking employees’ e-learning system use to their overall job outcomes: An empirical study based on the IS success model

e-Learning systems are increasingly being adopted by modern enterprises, because of their cost-down effect. However, the extant literature provides little insight into their beneficial consequences. It is expected that a transfer of acquired knowledge, skills and/or work attitudes to jobs will occur through e-learning systems use. This makes e-learning systems a useful tool for improving job outcomes, although this is not well documented. The IS success model, which captures both the human and technological elements of information systems, provides a theoretical basis for linking system use to system task. The current study then examines the relation between e-learning systems use and overall job outcomes based on the model. The data collected from one hundred and ninety-three e-learning system users were analyzed with partial least square (PLS). The results indicate that e-learning systems are perceived as useful and satisfying by employees, and employees’ e-learning systems use is significantly associated with overall job outcomes. In practice, these results provide a basis for establishing a link between an organization’s investment in e-learning and human capital management. They also lend empirical support to the IS success model.