Joint optimization of trajectory and resource allocation for UAV integrated radar and communication system [PDF]
, 2021 For the flexible and efficient area detection and data transmission tasks, the joint optimization of time resource allocation, power resource allocation and the trajectory for UAV (unmanned aerial vehicle) trajectory for airborne IRCS (integrated radar ...
Hui TIAN +4 more
core +1 more source
, 2020 El rol de director escolar conlleva la ejecución de múltiples actividades que, muchas veces, van en paralelo con la actividad didáctica lo que podría estar relacionado con rendimiento y clima escolar.
Chaljub-Hasbun, Jeanette +2 more
core +6 more sources
Optimization scheme for the SWIPT-NOMA opportunity cooperative system [PDF]
, 2020 In order to improve the spectrum efficiency and performance of the simultaneous wireless information and power transfer (SWIPT) system,the non-orthogonal multiple access (NOMA) technology was introduced to construct the SWIPT-NOMA opportunistic relay ...
Qianli NING, Taoshen LI, Zhe WANG
core +1 more source
Optimal relay selection for full duplex SWIPT-NOMA systems with maximal throughput [PDF]
, 2021 To improve the performance of 5G communication system, a full duplex Internet of things (IoT) relay system model was built by introducing the non-orthogonal multi-access (NOMA) technology.For the relay system of simultaneous wireless information and ...
Anni SHI, Lu HE, Taoshen LI, Zhe WANG
core +1 more source
Energy efficiency maximization resource allocation algorithm in wireless-powered backscatter communication network [PDF]
, 2020 In order to alleviate the energy consumption problem caused by the increasing number of Internet of things (IoT) nodes,an energy-efficient (EE) maximization based resource allocation algorithm was proposed for multi-carrier wireless-powered backscatter ...
Bowen GU +3 more
core +1 more source
Classroom Discourse Analysis of the U.S. Elementary Chinese Immersion Program——A Case Study of a School in Utah [PDF]
, 2016 本文采用理论和实证研究相结合的方法，从课堂互动、教师话语和学生话语三个角度对美国小学沉浸式汉语课堂话语进行了研究。全文共分六个部分： 第一部分，绪论。阐述了本研究的背景和意义及其理论基础；归纳分析了现有的对沉浸式教学，特别是沉浸式课堂话语的研究成果；介绍了本文的研究方法，包括研究对象、语料搜集过程和语料分析方法。 第二部分，美国小学沉浸式汉语课堂互动研究。包括师生话语比例、课堂话语结构、意义协商模式和话轮转换模式四方面。针对课堂互动的研究显示，小学沉浸式汉语课堂仍以教师为主导 ...
张洁泠
core
Study on activity rhythms and behavior time budgets of wild Red muntjac (Muntiacus vaginalis) in Fujian Wuyi Mountain National Nature Reserve using infrared camera trap [PDF]
, 2017 自2016年1月1日~12月19日在福建武夷山国家级自然保护区采用红外相机陷阱技术对赤麂进行监测，所有红外相机累计达到7985个有效工作日，共获得赤麂的独立有效照片为757张（组），鉴定出844只（次）个体，对其性别、行为类型、活动时间等信息进行记录和汇总，分析赤麂的活动节律和行为时间分配，并初步探究幼麂的行为，研究结果如下： 赤麂属于以晨昏活动为主的昼行性动物，活动高峰呈双峰型，在早上6:00~8:00和傍晚18:00~19:00出现；不同季节、不同性别的赤麂日活动强度模式相似，利用Mann ...
王海婴
core
Data collection algorithm for mobile sink in delay-constrained network [PDF]
, 2014 In real-time applications,the delay constraint limits the speed and the trajectory of mobile sink which in consequence restrains the communication time between the sensor nodes and the sink.So it is difficult to balance delay requirement with the data ...
Xian-ling LU, Ying-ying WANG
core +1 more source
Requirements-oriented spectrum sharing for OFDMA cognitive radio networks [PDF]
, 2015 Considering the satisfaction of the secondary network communication requirements,a two-stage model was proposed to address the spectrum leasing and allocation problem in OFDMA cognitive radio networks(CRN).At the first stage of the model,the secondary ...
Bi-qing ZENG +3 more
core +1 more source
Research of Simultaneous Wireless Information and Power Transfer System Based on Large Scale Antenna [PDF]
, 2016 随着社会能源的紧缺以及通信网络的迅速发展，绿色通信已经成为无线通信中一个重要的研究方向。大规模多天线技术在不增加频谱带宽的条件下大幅增加系统容量，具有能耗低、传输稳定、发射机结构简化等优点，是下一代无线绿色通信的关键技术。无线信息与能量同时传输（SimultaneousWirelessInformationandPowerTransfer，SWIPT）技术的出现给绿色通信提供了一个重要的发展方向，SWIPT满足了基站与用户同时进行信息通信与能量传输的需要 ...
吴思颖
core