五谷丰登

农耕社会以农业劳作为主,因此,一年中最大的喜悦就是粮食丰收。汉语中描绘丰收场景的成语可不少,比如“五谷丰登”“丰年稔岁”“年丰时稔”等。不难看出,“丰”是比较常用的一个字。如果从字形看,“丰”字可太简单了,三横一竖,怎么和丰收的场景联系起来呢?那就让我们追溯一下它的演变历史吧。

Application Scenarios and Enabling Technologies of 5G

Fast growth of mobile internet and internet-of-things has propelled the concept formation and research on 5G wireless communications systems which are to be standardized around 2020(IMT-2020).There will be diverse application scenarios expected for 5G networks.Hence,key performance indicators(KPIs) of 5G systems would be very diverse,not just the peak data rate and average/edge spectral efficiency requirements as in previous generations.For each typical scenario,multiple technologies may be used independently or jointly to improve the transmission efficiency,to lower the cost,and to increase the number of connections,etc.Key enabling technologies are discussed which include massive MIMO,ultradense deployment specific techniques,nonorthogonal transmission,high frequency communications,etc.

浅谈小学音乐与生活

现在我们的音乐教育是素质教育的重要组成部分,全面推进素质教育的路上必然需要我们重视音乐教学,俗话说,艺术来源于生活,我们的音乐创作也来源于生活,生活赋予我们创作的灵感,因此我们的音乐教育与生活联系相当密切,那么我们的小学音乐教学就可以从生活角度出发,把音乐课堂生活化,以提高我们的音乐教学质量和水平。