网络青年亚文化视域下高校思想政治教育话语创新研究

网络青年亚文化语言与传统语言文化相互碰撞、融合给传统思想政治教育带来一定的冲击和挑战。通过分析网络青年亚文化环境下高校思想政治教育话语困境,反思高校思想政治教育话语存在的话语权威性不高、效力性不强、吸引性不足等问题,提出更新理念、优化内容、搭建载体、拓展渠道等思路推动高校思想政治教育的话语创新。     

Super-orthogonal space-time code design based on the trellis diagram integrated operation

By studying the super-orthogonal space-time coding designs for 2 transmit antennas and superquasi orthogonal space-time coding designs for 4 transmit antennas,a novel super-orthogonal space-time coding design for 4 transmit antennas is proposed.By exploiting the inherent structure association between OSTBC and QOSTBC,the proposed schemes can obtain the full-rate and good performance while keeping the coding complexity as super-orthogonal space-time coding schemes for 2 transmit antennas.Simulation results d...     

Asynchronous cooperative communication systems:A survey on signal designs

Cooperative communications is a promising technique for future high speed wireless communications.These systems may be formulated as virtual multi-input multi-output (MIMO) systems where spatial/cooperetive diversity is a key advantage. However,different from MIMO systems,one of the major chal- lenges for cooperative communications systems is that the cooperative transmissions in cooperative systems may be neither time nor frequency synchronized,since the transmissions are from multiple cooperative nodes at...     

Performance analysis and partner selection for cooperative diversity based on MQAM modulation

An adaptive decode-and-forward (DF) cooperative diversity system based on quadrature modulation is proposed, in which each user is allowed to transmit its own and the partner’s data simultaneously via the in-phase and quadrature components of M -ary quadrature amplitude modulation (MQAM) constellation. Cooperative transmission in this way can avoid the bandwidth expansion in traditional cooperative systems. The closed form expression of the average bit error rate (BER) performance is derived in terms of the...     

Web日本语虚拟教师4维导学模型的研究与实现

信息技术在教育领域中的应用,为学生的个性化学习提供了可能,打破了学习内容、进度、起点、目标、要求等的统一性。该研究的目的是探索一种具有一定模拟实际教师部分机能的日本语虚拟教师导学模型。研究方法是通过计算机模拟技术及智能数学模型对实际日本语教师的导学功能进行近似仿真表达。该研究已完成该Web日本语虚拟教师一对一因材施教和因需施教为学员制定学习方案的4维导学功能模型。利用该模型可以模拟真实日本语教师导学功能,完成对任意基础和任意学习目标的日本语学员制定个性化学习方案。     

基于身份的卫星网络密钥管理方案

为进一步提高卫星网络密钥管理的效率,文中假设地面控制中心(Telluric Control Center,TCC)作为PKG(Private Key Generation)是完全可信且性能强大的,由TCC为卫星计算私钥,并利用Shamir秘密共享方案将私钥分片传送给各卫星节点,在会话密钥协商过程中利用节点私钥加密时间戳和位置信息以保证新鲜性和认证性。文中利用串空间证明了该方案密钥传输过程的机密性和认证性以及会话密钥的认证性,并和现有的协议进行性能对比,结果表明在假设条件下,该方案是可行的,且性能消耗小。因此文中方案具有较强的实用性。     

DirectX 11时代最华丽的视觉体验 《孤岛危机2》画质、性能对比测试

一款号称具备“电影级画质”的DirectX 11游戏在上市之初却并不支持DirectX11．增添了其神秘感。在时隔数月之后,游戏开发商Crytekt式发布了该游戏的DirectX11补丁包。一时间．玩家都迫不及待地准备体验这款游戏。是的．不用猜了．它就是《孤岛危机2》．也只有这款游戏能让无数硬件发烧友和游戏爱好者为之动容。笔者也在第一时间下载了该游戏的DirectX11补丁包．一场堪为DirectX11时代最为华丽的游戏之旅已经开启。