Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract::在信息网络持续优化、信息水平持续提升背景下,人民群众信息获取路径也持续增加,使得信息获取越发方便。现阶段,新媒体在人民群众的实际生活中具有极大作用,逐步成为人民群众获取信息的主要形式。但是新媒体的高速发展,在一定程度直接影响到信息的可靠性、真实性。基于此,文章主要分析新媒体含义与影响,以求能够为媒体编辑记者正确对待与应用新媒体传播提供一定参考。
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-04-17 Cooperative journals: 《计算机应用研究》
Abstract: To further improve the multi-relay cooperative transmission efficiency in wireless networks, this paper proposed a dynamic programming scheduling based on network coding with less feedback(DPNC-LF) . The DPNC-LF considered the effective information of each relay and the transmission reliability of each link, and implemented the multi-relay cooperative forwarding to improve transmission effectiveness with the minimum number of retransmissions. In the condition of each link independent mutually and the state transition path selected adaptively, the DPNC-LF determined the optimal forwarding node for the entire transmission process. The simulation results show that the algorithm proposed in this paper is more effective than random selection scheduling in average throughput and the number of retransmission. With the feedback information dependence reduced and the feedback overhead decreased, the performance of this scheme is close to the performance of greedy algorithm scheduling.
Subjects: Biology >> Ecology submitted time 2018-06-09 Cooperative journals: 《生态学报》
Abstract:第九届国际生态系统服务大会(9th Ecosystem Services Partnership World Conference,ESP9)于2017年12月11日-12月15日在中国深圳召开。本次会议主题为"增强生态系统服务,促进生态文明建设",旨在探讨生态系统服务科学热点问题,交流最新研究成果,并寻求基于自然的绿色解决方案,进一步推动生态修复与环境保护政策及实践的有机结合,为加强生态修复与生态治理国际合作提供良好交流平台。本文旨在对本次会议的7场特邀报告,30个主题会场内容进行综述,内容围绕当前生态系统服务领域的前沿与热点领域展开,包括生态系统保护管理及可持续性、生物多样性、生态系统脆弱性、生态系统服务评估与模型、气候变化、土地利用与景观、政策与决策分析等方向。
Subjects: Biology >> Zoology submitted time 2017-10-11 Cooperative journals: 《动物营养学报》
Abstract:本试验旨在探讨饲粮中添加三丁酸甘油酯(TB)和牛至油(OEO)对断奶仔猪生长性能、血清生化指标、营养物质表观消化率和粪中微生物菌群的影响。试验选用28日龄平均体重为(7.27±0.68) kg的健康大白断奶仔猪128头,随机分成4组,每组4个重复,每个重复8头猪。各组分别饲喂基础饲粮(对照组)、基础饲粮+1 kg/t TB(TB组)、基础饲粮+1 kg/t OEO(OEO组)、基础饲粮+1 kg/t TB+1 kg/t OEO(TB+OEO组)。试验期28 d。结果表明:1)与对照组相比,OEO组显著提高了断奶仔猪平均日增重(P0.05)。3)与对照组相比,TB+OEO组显著提高了断奶仔猪粗蛋白质表观消化率(P<0.05),极显著提高了粗脂肪表观消化率(P<0.01)。4)与对照组相比,TB组、OEO组和TB+OEO组均极显著降低了粪中大肠杆菌的数量(P<0.01);TB+OEO组显著提高了粪中双歧杆菌的数量(P<0.05)。综上所述,基础饲粮中添加TB+OEO可提高断奶仔猪生长性能,改善营养物质表观消化率,调节肠道菌群平衡。