高职高专公共英语教学现状分析与提高教学质量的探讨

贯彻以服务为宗旨、以就业为导向的办学方针,培养的人才需最大限度地符合未来职业的要求。本文根据这一要求,从一名一线高职高专公共英语教师的角度,对高职公共英语教学中存在的问题进行了深入分析,并就如何不断提高教学质量提出了解决方法。     

有关桥梁梁体施工质量监理的控制

随着经济水平的不断提高,高速公路建设正在全国如火如荼的展开。在高速公路建设过程中,难免面临遇水搭桥的问题。此时,桥梁梁体施工质量便显得尤为重要了。为了预防钢筋混凝土梁体病害的产生,文中结合某预应力{昆凝土连续梁桥（龙湾大桥）主梁施工监理实践,对有天桥梁施工原材料质链、混凝土配置、施工工艺控制及人的质量安全意识等方面进行了深入的分析,旨在为同类建设提供一定价值的参考。     

浅埋铁路隧道下穿公路控制地表沉降的数值分析

隧道施工引起的地表沉降机制复杂,很难定量预测隧道施工引起的地表沉降及发展过程。结合某浅埋铁路隧道施工,应用有限元软件对分部开挖进行非线性数值模拟,分析隧道开挖过程中的地表沉降变形。分析结果表明:该隧道采用拱部φ159mm大管棚、间距25cm、长度30m,掌子面帷幕注浆等超前支护措施,在确保注浆效果和管棚施工质量的条件下,地表沉降可得到较好的控制。     

Productivity changes in Taiwan's port industry incorporating environmental regulations on harbor water quality

Abstract

This paper evaluates the productivity changes in Taiwan's port industry for the period 2003–2007. Based on a ‘three-year-window’ data envelopment analysis method, Luenberger productivity indicators are employed to estimate the productivity changes that account for the success of attempts by port agents to control harbor water quality. This is one of the typical environmental concerns in port operations that prior studies on port productivity changes over time have not considered. The results show that the productivity of Taiwan's port industry has experienced growth over the study period, regardless of whether water quality has been considered or not. At a disaggregated level, however, if a port agent has succeeded in controlling water quality, but we do not consider it, the results will misclassify the agent by understating the port's productivity.     

Using AHP to measure the perception gap between current and potential users of bus services

Abstract

This study develops a multicriteria evaluation of user perception towards bus transit services and measures the gap in the perceptions held by current and potential users. A review of the transport quality literature indicates that both preference and satisfaction measures have been implemented to provide a comprehensive perception-based evaluation of bus quality. Although attempts have been made to evaluate user perception through a separate analysis of each (preference and/or satisfaction), the application of multicriteria quality measures are limited. A multicriteria quality measure not only offers more than just information on the daily experience of users but also knowledge of the internal process of quality evaluation (drivers/barriers). The multicriteria measure utilises the data of 512 questionnaires, whereby user perceptions were expressed through judgments of importance and satisfaction based on a set of 29 quality indicators classified into six attributes. Firstly, the study develops analytical hierarchy process (AHP) models to measure user preference. Secondly, a weighted perception index (WPI) of both preference and satisfaction is developed through a multicriteria model. Finally, multivariate analysis of variance (MANOVA) is conducted to identify the level of variation in the perception of both current and potential users towards bus service quality. The results show that although both current and potential users place a higher importance towards the same indicators, they do not share the same pattern of preferences (values and/or order). In addition, the study found that the interaction between preferences and satisfaction generated new patterns of subjective evaluation, and that these patterns vary significantly by user category.     

一种永磁同步电机声品质主观评价方法研究

对永磁同步电机的稳态信号声品质进行了分析,并以声压级、响度、尖锐度、语音清晰度、波动度、粗糙度和音调度作为评价指标,建立了永磁同步电机声品质评价体系.采用分组成对比较法进行了主观评价,通过Bradley-Terry算法对评价结果进行了优化处理,分别搭建多元线性回归预测模型和MPGA-RBF预测模型,通过预留的检验样本对...     

集成式电器装置板的研制与品质控制

介绍陕汽用集成式电器装置板总成的总体设计思想、品质控制,论证其加工工艺性和制造可行性。     

地表注浆在浅埋黄土隧道中的应用与效果分析

结合鸳鸯会隧道实例,对地表注浆技术进行研究。通过数值模拟软件计算注浆前后围岩变形和塑性状态,分析隧道塌陷成因及注浆加固效果。注浆结束后,使用地质雷达检测注浆区域,了解注浆管分布及浆液扩散情况,排除注浆后围岩中不密实区域。施作初支后,对比拱顶沉降现场监测、回归分析以及数值计算结果,研究围岩长期变形趋势。结果表明,综合数值分析、雷达检测及现场监测分析,能够有效评价浅埋黄土隧道地表注浆加固效果。     

面层模量对沥青路面结构受力特性影响分析

面层模量是沥青路面结构设计的重要参数。为分析面层模量对沥青路面结构受力特性的影响,采用有限元软件计算各面层模量变化、模量比对典型半刚性基层沥青路面结构层底拉应变、面层内部剪应力、基层层底拉应力和土基顶压应变等力学特性的影响。分析结果表明:各面层模量对沥青路面结构的受力有显著影响,路面结构设计时应综合考虑选择各面层模量及面层之间模量比。     

添加废旧胶粉的沥青混合料施工工艺控制

通过实体工程铺筑情况,从原材料、生产拌和及摊铺碾压等方面确定了添加废旧胶粉的沥青路面的施工质量控制方案和关键控制项目,并基于现有机械设备及施工技术水平,对拌和设备、运输设备、摊铺设备以及碾压设备提出了相应的技术要求,进一步明确了添加废旧胶粉的沥青混合料施工工艺控制要点,从而有效保证路面的施工效果,延长路面的使用寿命。