国际贸易专业校内实习实训平台建设的探索

高职教育承担着为区域经济提供应用型人才的责任,实习实训对培养应用型人才发挥了很大的作用,而国际贸易专业在实训环节却缺乏成熟的条件,建立校外实习基地存在诸多约束,文中基于外贸行业的特点探讨通过建立校内实习实训平台以弥补实习环节的不足,从而使学生最大可能掌握外贸岗位群职业技能,为广东地区经济增长提供合格的外贸人才。     

透空箱体浮式防波堤消浪特性实验研究

通过对4种不同结构形式的浮式防波堤进行实验研究,分析了浮式防波堤在规则波作用下防波堤透射系数与模型顶板相对入水深度q/d、相对板间距s/d、相对板长B/L以及顶板开孔的关系.研究结果表明,相对板长是影响防波堤消浪性能的最重要因素.在加大锚链拉力的同时,增加防波堤长度是提高防波堤消浪性能的有效方法.     

VR虚拟仿真技术在粮食冷链物流实训教学的应用研究

根据国家“十四五”冷链物流发展规划的要求,我国现在要重点培养冷链物流技术方面的专业人才,通过实训提高冷链物流人才的实践能力和创新能力。本文介绍了传统粮食冷链物流实训教学当中存在的问题,为了解决这些问题,运用VR虚拟仿真技术,结合所学的专业知识,增强学生对粮食冷链物流运作的理解,提高学生学习的积极性,培养学生的创新能力,增强学生的动手操作能力,为粮食冷链物流行业培养技能型人才。     

底盘测功机采用查表法加载对燃料消耗量的影响

随着石油价格的不断攀升,汽车的油耗问题日益突出。轻型汽车的综合油耗是在实验室内底盘测功机上检验得到,因此底盘测功机的加载方法对油耗检验结果有着直接影响。文章对常用的底盘测功机加载方法—滑行法和查表法进行了理论分析,并通过试验加以验证。     

道路交叉口车路协调实验系统设计与实现

提出了道路交叉口车路协调实验系统框架、实现方法并进行了系统搭建测试。在分析系统功能的基础上进行了系统逻辑框架与系统物理框架设计,实现了各子系统功能,包括：GPS车载定位信息采集、交通控制系统设定、路侧处理单元与车载处理单元程序设计与短程无线通信,在此基础上建立了道路交叉口车路协调实验系统,模拟实际交通运行状态对系统主要性能进行测试。实验结果表明该系统可以完成信号灯状态的车载实时显示,但应进一步提高定位精度与通信效果。实验系统不仅为进一步研究基于车路协调的下一代智能交通运输系统提供了实验平台,还能采集相关的车辆运行数据与驾驶员特征数据。     

胶粉改性沥青性能介绍

橡胶粉改性沥青是一种新型改性沥青,文章从胶粉沥青的性能指标和胶粉沥青混凝土的突出性能方面分别论述,阐述了胶粉改性沥青针对其他改性沥青的优越性和发展前景。     

天然岩沥青改性沥青试验研究及工艺优化

对天然岩沥青的湿法改性工艺进行了研究,按照常规性能指标、Superpave性能分级对不同惨量下的岩沥青改性沥青进行了评价;同时利用正交实验法对剪切改性工艺进行研究,优选出岩沥青改性沥青的最佳工艺参数设置。     

Eye-Movement Characteristics of Drivers According to Driving Experience-Relevance to Traffic Sign Legibility

An experiment was conducted to find the variability of driver eye movement according to different driving experience.An eye tracking system was used to study the regularity of driver eye movements, such as fixation duration, variations of fixation points, and the distribution of glance zone.It was found that driving experience had a significant effect on driver eye movement behavior.The percentage of fixation duration to total glance time for inexperienced drivers was 61.5%, while the percentage for experienced drivers was 50.2%.Moreover, the majority of drivers paid attention to the left region of the field of view more frequently than the central and the right regions.This study indicates that it takes inexperienced drivers more time to recognize traffic signs.The findings from this study will assist traffic engineers in designing and installing the traffic signs in an optimal way.     

An experimental study of pioglitazone in treating vascular dementia

Objective To compare the therapeutic effects of different doses of pioglitazone, a kind of peroxisome proliferator-activated receptor γ (PPARγ) agonist, on vascular dementia and explore how pioglitazone affects cerebral ischemia. Methods Modified Pulsinelli's vessel ligation was used to establish a vascular dementia model in rats. Recognition, learning and memory were evaluated by Morris's water maze test. Immunoenzyme staining was used to determine the number of nerve cells. Immunofluorescence double-staining was used to examine the expression of PPARγ/nerve cells and PPARγ/astrocytes in different groups. Results Both in pioglitazone groups and sham-operation group, the latency was reduced significantly compared to that in control group (P<0.01). Sham-operation group had the largest number of neurons in the cortex, followed by low-dose pioglitazone group and high-dose pioglitazone group, and control group came last. Compared with control group, pioglitazone groups had more PPARγ expression in nerve cells, and the fluorescence intensity of PPARγ was stronger. Conclusion Pioglitazone can induce the expression of PPARγ in neuron endochylema and astrocyte endochylema to protect nerve cells, and then to improve spatial learning and memory function in VD rats.     

东莞轻轨R2线实验段动工

3月26日,东莞首条市内轻轨R2线实验段工程正式动工,R2线是目前东莞规划的4条市内轻轨线中最先开工的线路。该线路长60公里,计划5年全线贯通并投入使用。届时,R2线将通过4个换乘点,与广深铁路、穗莞深、莞惠城际线及广深港客运专线进行交叉换乘,实现东莞市内轻轨与珠三角各市轨道交通的无缝对接。