“电子技术”课程的混合式教学改革与实践

在新工科的背景下,开展生物医学工程类专业的“电子技术”课程混合式教学改革与实践模式的研究。在课程教学中,利用超星学习通构建线上学习平台,与传统课堂教学融合,提升教学效果。教学中引入“以问题为导向”的教学方法,培养学生工程应用和实践能力。完善课程学习考核机制,注重过程考核,使课程考核更透明、更科学。     

浅析市、县级广电行业如何走出困境

随着网络技术的发展,传统广播、电视的传播方式,受到了互联网络传播速度的快速提高和互联网用户大量普及的巨大挑战,互动、点播互联网传播方式是对传统传播方式的一场技术革命,随着技术的进步,视频、声音、图片和文字等各种信息在互联网成为传播的主要方式。广电行业应该尽快搭建自己的融媒体平台和组建自己的跨越5 G网络。     

游戏化理论在运动类APP中的设计应用方法研究

目的以提升用户运动动机,增强自我监督为目标,探索游戏化设计理论在运动类APP中的应用方法。方法对游戏化理论的发展进行梳理,从目标、控制、反馈、互动场所和互动工具等方面提出移动应用的游戏化设计模型。同时,针对现有运动类APP在用户行为动机驱动不足的问题,给出具体的游戏化设计应用原则,并以"有跑步欲望而无法坚持跑步"的大学生用户为例,对跑步运动APP的功能模块和信息框架进行了设计。结论垂直细分用户群体,以提升用户情感体验为核心,结合外部刺激实现外在动机内在化,是游戏化理论在运动类APP中设计应用的重要方法。     

基于眼动仪的手机游戏APP图标视觉度提升策略

目的 基于手机游戏APP图标设计与游戏策划推广及程序下载效率之间的联系,采用眼动仪追踪技术对图标进行主题图形的注目性测评,为图标的注目性提供客观指标,总结提升图标视觉度的设计规律。方法 将理论引入与客观测评相结合,采用创新的主题图形分类测试法,设计7组不同的对比测试。使用眼动仪收集主要眼动轨迹数据,以首次进入时间和注视点数目考察被测图标视觉度的强弱。结果 通过眼动数据分析分别获得针对图形概括率、图形饱满度、人脸图形敏感度、眼部处理效果、面部表情指标、图形边框空间层次等形态要素的较优设计方案。结论 使用眼动仪,可建立平面设计视觉度理论与图标注目性测试间的联系,提高游戏程序在应用市场上的视觉竞争力和下载量。     

基于用户体验的非遗APP设计与应用研究

目的 实现非遗APP创新设计应用,提高非遗APP的用户体验,促进非遗文化的传播。方法 根据非遗文化活态性的特点将其分为静态特征文化和动态特征文化,对两种特征文化进行转换形成非遗文化知识单元,结合Garrett用户体验要素模型,构建非遗APP用户体验要素模型,分析模型中各层级的逻辑关系和设计原则。以二十四节气为例进行设计开发,通过用户测评结果验证该模型的可用性。结果 用户测试数据显示,以非遗APP用户体验要素模型指导开发的二十四节气APP,在价值性、可靠性、可用性和合意性上拥有良好的用户体验,能促进节气内容传播。结论 非遗APP用户体验要素模型能满足非遗APP开发的需要,为非遗APP的设计开发提供借鉴和思路,将其作为非遗APP用户体验的设计模型具有较强的可行性。     

聚磷酸铵的合成

研究了在常压条件下以湿法磷酸生产的工业级磷酸一铵和尿素为原料生产聚磷酸铵(APP)的合成工艺条件,制备了平均聚合度为400的聚磷酸铵.研究了磷酸铵、反应温度、组分配比、反应时间对平均聚合度的影响.结果表明,高聚合度APP的优惠生产工艺条件为:尿素与磷酸一铵的摩尔比为2,聚合温度为300℃,聚合时间为3h.聚合反应完成后,冷却,即得粉末状的APP聚合物.     

A modified particle swarm optimization for aggregate production planning

Particle swarm optimization (PSO) originated from bird flocking models. It has become a popular research field with many successful applications. In this paper, we present a scheme of an aggregate production planning (APP) from a manufacturer of gardening equipment. It is formulated as an integer linear programming model and optimized by PSO. During the course of optimizing the problem, we discovered that PSO had limited ability and unsatisfactory performance, especially a large constrained integral APP problem with plenty of equality constraints. In order to enhance its performance and alleviate the deficiencies to the problem solving, a modified PSO (MPSO) is proposed, which introduces the idea of sub-particles, a particular coding principle, and a modified operation procedure of particles to the update rules to regulate the search processes for a particle swarm. In the computational study, some instances of the APP problems are experimented and analyzed to evaluate the performance of the MPSO with standard PSO (SPSO) and genetic algorithm (GA). The experimental results demonstrate that the MPSO variant provides particular qualities in the aspects of accuracy, reliability, and convergence speed than SPSO and GA.     

ABS/PA6合金的无卤膨胀性阻燃研究

以聚磷酸铵(APP)为酸源, 利用ABS/PA6合金中PA6为炭源对ABS/PA6合金进行膨胀型阻燃研究,探讨了不同成炭协效剂与APP复配对合金阻燃性能的影响,这些成炭协效剂包括季戊四醇笼状磷酸酯(PEPA),热塑性酚醛树脂(TPPFR),环氧树脂(E-44)和分子筛4A. 结果表明,PA6具有较好的成炭作用, 当APP含量为25%时,阻燃合金体系的极限氧指数可达29,UL-94测定达V-1级别,APP含量为35%时,UL-94测定达V-0级别.而以5t%的季戊四醇笼状磷酸酯(PEPA)或环氧树脂(E-44)与20%APP复配, 或以3%分子筛4A与22%APP复配都可以大大提高体系的阻燃性能和高温下的残炭量, 使阻燃体系氧指数达到30以上, UL-94测定达V-0级别. SEM形貌分析显示体系燃烧表面都形成了膨胀、均匀、致密的炭层结构.     

中国移动互联网应用服务领域发展研究

近些年移动互联网各领域快速发展.在用户方面,移动用户规模快速增长,2016年移动互联网用户总数达到20亿.在终端方面,2016年,全球移动智能终端总共出货量达到15亿台,同比增长约5％.在应用方面,移动应用规模超过1000万款,累计下载规模超过万亿.与此同时,移动应用产业飞速发展,其不断融入新型能力,在传感、识别等方向均有突破,并快速融入到人们日常生活的方方面面.随着移动应用服务的发展,其同样出现了诸多问题,危害用户合法权益,影响产业健康持续发展.重点阐述当前移动应用领域发展现状,解析其特点与存在问题,并探索保障行业健康持续发展的相关措施.     

Functions and roles of social media in media transformation in China: A case study of “@CCTV NEWS”

Social media has transformed how traditional media is used and viewed in China. Many traditional media companies are utilizing social media platforms such as WeChat, Weibo (Micro Blog), and Cellphone-Applications to expand their influence. But how has social media contributed to the transformation process of traditional mainstream media in China? Did they push the reform in both deep level and superficial level? We attempts to find the answers by taking CCTV (China’s state media) as the subject of research and explore the social factors that facilitated China’s traditional media’s transformation process, the traditional media’s achievements, as well as the challenges during this period.The paper consists of six parts. In the first part, we had a literature review, and elaborated on terms included in this paper. In the second part, we gave an general introduction to different development periods of CCTV station, CCTV News programs and CCTV’s social media transformation. In the third part, we analyzed the factors that encouraged CCTV to take the strategy of transformation, which are also urging other mainstream media companies in China to take the same steps. In the fourth part, we looked into the achievements the media companies made during the transformation period. Afterwards, the deficiencies and limitations in the transformation process are also analyzed. Finally, we drew conclusions that in the process of transformation, social media plays an important role in superficial reform while attaining very limited achievements in the fundamental level. There is still a long way to go in order to accomplish the all-round integration with new media.The thesis utilizes in-depth interviews, content analysis and literature review as methods of research. It is worth mentioning that this paper is based on first-hand data retrieved from the New Media Department of CCTV News Center.