基于混合式学习的“计算机应用基础”课程教学设计

信息技术的快速发展,促使教学模式不断改革创新。"计算机应用基础"作为一门实践性很强的课程,传统的课堂教学模式已不适合它。近几年出现的混合式学习(Blended Learning)理论结合了传统课堂教学和课后网络在线学习(E-learning)的优势,有助于该课程教学的变革。文章结合"计算机应用基础"课程教学的实践,提出针对该课程的基于混合式学习的教学设计。     

基于图像和人工鱼群算法的建筑火灾动态疏散路径规划研究

为了解决大型建筑发生火灾时传统静态疏散系统无法根据火灾点和人员拥挤程度进行路径调整这一问题,提出了基于图像和人工鱼群算法的动态疏散路径规划方法。在栅格图上进行路径规划,通过将鱼群的最优解替换为可行解,使鱼群避免陷入局部最优和全局最优相互干扰的情况,并结合摄像头采集图像,通过人脸识别人数,判断当前路径是否拥挤,及时调整路径,从而确保规划出的路径可以避免堵塞,动态疏散人群。仿真实验结果表明,所提算法能够在相同时间内,规划出较蚁群算法路径更短,可避免陷入局部最优和死锁状态,根据拥挤程度及时改变路径,并能够在时间和空间双重约束的情况下实现人群动态疏散。因此,新算法在相同运行时间内可以规划出更短的路径,可以帮助火灾现场人群以更少时间、更短路径、更高效率的方式进行动态疏散。     

传统财务报告的变革方向设想

随着新经济形态的出现，传统的财务报告在披露内容的完整性和披露时间的及时性方面面临着前所未有的挑战。诸多新生事物由于会计程序和技术方法的局限无法纳入原有的财务报告体系，财务信息的提供也存在严重滞后的问题。本文试图通过增加编制全面收益表、拓展财务报告内容、提供前瞻性的预测信息和计量手段的扩大等，使财务报告真实、全面地反映企业所拥有资源和权益的变动情况。     

汉英语码转换的成因及语用功能分析

语码转换长期以来一直是社会语言学的重要研究课题,从语用学的角度进行研究可以更有效、更令人信服地解释语码转换现象。随着汉英语码转换或混合现象频繁出现,汉英语码转换能体现言语交际中的顺应原则、面子原则、语用修辞效果等语用功能。     

7199综放工作面涌水机理研究

某煤矿7199工作面在回采过程中,顶板裂隙带导通煤层顶板砂岩水和石盒子组底界砂岩水,造成长期高水量涌水,几度危及工作面回采。为了实现7199工作面在高水压突水条件下安全回采,通过水质化验、水情观测、矿压观测分析等手段,确定水源和出水规律;通过分析工作面突水特征和涌水期间工作面顶板来压规律进行对比分析,找出了顶板压力和涌水之间的关系;利用岩层在周期来压条件下的破坏规律,分析了工作面涌水机理,为以后工作面防治水提供理论依据,对于革新采煤工艺有很重要的实用价值。     

亭南煤矿205工作面运输顺槽超前支护支架应用研究

亭南煤矿205综采工作面运输顺槽顶板采用2架ZCZ12700/24/40和1架ZCZ12700/24/40A型超前支护支架进行支护。通过实际应用证明,超前支护支架支护性能优越,安全性高,便于操作,适合于大采高综采工作面超前支护中的应用。     

敏感图像识别算法研究

为了控制色情图像在网络上传播,文章提出了一种敏感图像识别算法,该算法结合人体肤色模型、人脸识别及图像肤色区域面积所占比例等技术,实现了对色情图像的识别过滤。实验结果表明,该方法误判率较低,具有良好的实用性。     

浅谈点 线 面在休闲装中的结合运用

服装是由服装的外部轮廓和组成服装的部件所构成,服装的部件形态本来就是呈现一些规则或不规则的几何形态。几何形态是人类最初的纹样造型,其通过点、线、面的有规律或无规律的构成组合,形成几何画面效果。设计师们受到现代艺术思潮的影响,对于几何形态的演绎已是炉火纯青,时而规则整齐具有秩序美感;时而疏密具有空间的美感;时而零乱具有韵律的美感;时而简洁具有单纯的美感。任何一种几何形态的组合,给人的视觉冲击力都带有深深的哲理和精神内涵。     

The effect of compulsory face mask policies on community mobility in Germany*

There is an ongoing debate about face masks being made compulsory in public spaces to contain COVID-19. A key concern is that such policies could undermine efforts to maintain social distancing and reduce mobility. We provide first evidence on the impact of compulsory face mask policies on community mobility. We exploit the staggered implementation of policies by German states during the first wave of the pandemic and measure mobility using geo-located smartphone data. We find that compulsory face mask policies led to a short-term reduction in community mobility, with no significant medium-term effects. We can rule out even small increases in mobility.     

A global perspective on combating Shanzhai products: Cross-cultural solutions

To compete on the world market, companies from emerging economies often adapt their innovations to satisfy unique cultural needs. They do so, in part, by copying the products of their western counterparts with a degree of modification. This approach is referred to as Shanzhai, which is a Chinese neologism meaning “copycat.” In this article, we discuss the Shanzhai phenomenon and explain Shanzhai's development stages and threats to original brands across the globe. Then, we examine how cultural factors (i.e., power distance belief, face consciousness, and analytic vs. holistic-thinking style) influence consumers’ perception towards Shanzhai products. We further suggest that original manufacturers should adopt selected strategies to combat Shanzhai threats vis-à-vis three cultural drivers. One driver entails launching full product lines and developing new distribution channels in high power distance belief cultures but promoting brand originality in low power distance belief cultures. A second alternative involves embracing a sustainable and green brand image in low face-sensitive cultures but strengthening brand logo impacts and enhancing intangible brand benefits—such as social value (e.g., brand user profile, prestige)—in high face-sensitive cultures. The third entails communicating integrated product values in holistic-thinking cultures but highlighting an offering's most competitive and unique features in analytic-thinking cultures.