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Development of Long-Range,Low-Powered and Smart IoT Device for Detecting Illegal Logging in Forests

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Journal of Dynamics, Monitoring and Diagnostics 2024年第3期3卷 190-198页

作者： Samuel Ayankoso Zuolu Wang dawei shi Wenxian Yang Allan Vikiru Solomon Kamau Henry Muchiri Fengshou Gu Centre for Efficiency and Performance Engineering University of HuddersfieldHuddersfield HD13DHUK School of Computing and Engineering Sciences Strathmore UniversityMadarakaNairobi***Kenya

Forests promote the conservation of biodiversity and also play a crucial role in safeguarding theenvironment against erosion,landslides,and climate ***,illegal logging remains a significant threatworldwide,necessitating the development of automatic logging detection systems in *** paper proposesthe use of long-range,low-powered,and smart Internet of Things(IoT)nodes to enhance forest *** research framework involves developing IoT devices for forest sound classification andtransmitting each node’s status to a gateway at the forest base station,which further sends the obtained datathrough cellular connectivity to a cloud *** key issues addressed in this work include sensor and boardselection,Machine Learning(ML)model development for audio classification,TinyML implementation on amicrocontroller,choice of communication protocol,gateway selection,and power consumption *** the existing solutions,the developed node prototype uses an array of two microphone sensors forredundancy,and an ensemble network consisting of Long Short-Term Memory(LSTM)and ConvolutionalNeural Network(CNN)models for improved classification *** model outperforms LSTM and CNNmodels when used independently and also gave 88%accuracy after ***,this solutiondemonstrates cost efficiency and high potential for scalability.

关键词： illegal logging forest monitoring internet of things nodes TinyML sound classification

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省级广电微波机房的安播监控系统设计与实现

广播与电视技术 2024年第1期51卷 107-112页

作者：施大威海南广播电视总台海南570206

本文设计一套广播电视信号监控系统,实现对全省微波台站信号传输的有效监控。文章通过分析广播电视信号监控需求,介绍搭建信号监控系统的架构方案和具体软硬件配置要点,从而进一步完善安播信号监管能力,保障广播电视信号安全播出。

关键词：微波台站安播信号监控 NTP同步时钟

以“6+”为环境艺术毕业设计模式的新质人才培养探索

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中国艺术 2024年第3期 28-33页

作者：邹锋石大伟北京工业大学艺术设计学院

大力培养新质人才是深入实施人才强国战略、加快建设世界重要人才中心和创新高地的行动要义。我国环境艺术(以下简称“环艺”)设计专业虽然已有近30年的发展历史,但在环艺设计人才培养方面还存在培养模式单一、课程设置传统以及教学体... 详细信息

大力培养新质人才是深入实施人才强国战略、加快建设世界重要人才中心和创新高地的行动要义。我国环境艺术(以下简称“环艺”)设计专业虽然已有近30年的发展历史,但在环艺设计人才培养方面还存在培养模式单一、课程设置传统以及教学体系建构老化等问题。本文通过“6+”为环艺毕业设计模式的实践探索,引入人工智能思维与数智技术,可以有效地打通学校与企业、课堂教学与实践、培养体系与行业需求等诸多人才培养环节,培养学生的开拓精神与破界能力、创想能力与实践智慧,为环艺设计专业新质人才培养模式提供新的发展思路。

关键词：新质生产力环境艺术设计毕业设计人才培养

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Transport and behavior of marine oil spill containing polycyclic aromatic hydrocarbons in mesocosm experiments

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Journal of Oceanology and Limnology 2023年第1期41卷 166-173页

作者： dawei shi Houlei JIA Department of Marine Ecology Research South China Sea Institute of Planning and Environmental ResearchState Oceanic AdministrationGuangzhou 510300China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China

Polycyclic aromatic hydrocarbons(PAHs)are one of the most important groups in oil,and re sponsible for major toxic and/or carcinogenic impact on humans and *** is important to understand the behavior of PAHs in marine environment after an oil-spill ***,interaction between petroleum PAHs and microbial communities in a marine environment remains ***,a series of mesocosm experiments were *** which water-accommodated fraction(WAF)of oil was generated to simulate an oil-spill scenario and to analyze the transport and behavior of marine oil spill containing PAHs with and without *** indicate that the application of dispersant could increase the concentration of total PAHs in water column due mainly to significant increase in the concentration of highmolecular weight(HMW)PAHs at a lower removal *** the end of the 7-day experiment,significant amount of HMW PAHs were accumulated in *** general,the application of dispersant did not increase the sediment uptake of PAHs but increased the PAHs concentration in water column.

关键词： polycyclic aromatic hydrocarbons(PAHs) marine oil spill mesocosm dispersants degradation and transport

江苏沿海“7.26”飑线大风过程诊断模拟分析

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海洋预报 2024年第2期41卷 117-125页

作者：庆涛李泽宇李超史达伟南京市江宁区气象局江苏南京211100 江苏省气象信息中心江苏南京210019 江苏省气象台江苏南京210008 连云港市气象局江苏连云港222006

利用加密自动观测资料、EAR50.25°×0.25°再分析资料、常州和盐城SA天气雷达资料等和基于三维变分技术(3DVAR)的多雷达风场反演技术,并利用WRF数值模式,对2022年7月26日发生在江苏的一次大范围飑线大风过程进行了分析。结果表明:在此... 详细信息

利用加密自动观测资料、EAR50.25°×0.25°再分析资料、常州和盐城SA天气雷达资料等和基于三维变分技术(3DVAR)的多雷达风场反演技术,并利用WRF数值模式,对2022年7月26日发生在江苏的一次大范围飑线大风过程进行了分析。结果表明:在此次飑线大风过程中,高空出流区辐散、低层低涡切变辐合,上干冷下暖湿的环境并且配合低空西南急流源源不断输送水汽,为对流的触发和组织化发展提供了较好的动力、水汽条件;飑线入海前,不稳定能量、垂直风切变、垂直上升和水汽条件均较好,而飑线入海后,众物理量配置较差,这与飑线在陆上的组织化发展、强度维持及入海后强度减弱的变化对应较好;飑线入海后,底层后侧入流减弱,使得干空气减少,不利于飑线维持,导致海上大风强度减弱。同时,纬向海陆热力差异变小使得海风的强度也逐渐减小,导致风场辐合效果变差,这可能是飑线系统入海减弱和其引发的海上大风风力变弱的原因之一,数值试验成功模拟了减小纬向热力差异会引发飑线对流系统的减弱。

关键词：飑线 WRF模式纬向热力差异地形

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基于事件触发学习的航天器定轨算法

指挥与控制学报 2024年第2期10卷 220-225页

作者：史大威李双汐邹恒光张磊王军政北京理工大学自动化学院北京100081 中国空间技术研究院北京100094

针对通信和计算资源受限的航天器实时定轨问题,提出一种基于事件触发学习的无迹卡尔曼滤波航天器定轨算法。以无迹卡尔曼滤波方法为基础,设计随机事件触发机制驱动的自适应学习算法,实现有限系统动态学习频率下的实时定轨,在保证定轨精... 详细信息

针对通信和计算资源受限的航天器实时定轨问题,提出一种基于事件触发学习的无迹卡尔曼滤波航天器定轨算法。以无迹卡尔曼滤波方法为基础,设计随机事件触发机制驱动的自适应学习算法,实现有限系统动态学习频率下的实时定轨,在保证定轨精度的同时降低地面站与航天器双向通信次数,有效节省了航天器通信与计算资源。

关键词：航天器定轨事件触发学习状态估计无迹卡尔曼滤波自适应滤波

热带印度洋海表面温度与海面净热通量耦合主模态的气候演变特征

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海洋湖沼通报 2024年第2期46卷 22-31页

作者：杨梦兮胡瑞金刘梅张银意史达伟江苏省泰州市气象局江苏泰州225300 中国海洋大学物理海洋实验室和山东省高校海洋-大气相互作用与气候重点实验室山东青岛266100 江苏省气象台江苏南京210008 江苏省连云港市气象局江苏连云港222002

利用1960年1月—2008年12月共49 a的SODA的SST资料和ECWMF的海面净热通量的资料,采用滑动SVD方法,对热带印度洋上两场异常耦合主模态的气候演变特征进行了分析,并对显著变化的时间、地点分别进行了判定。结果表明:(1)耦合作用在演变过... 详细信息

利用1960年1月—2008年12月共49 a的SODA的SST资料和ECWMF的海面净热通量的资料,采用滑动SVD方法,对热带印度洋上两场异常耦合主模态的气候演变特征进行了分析,并对显著变化的时间、地点分别进行了判定。结果表明:(1)耦合作用在演变过程中有逐渐加强的趋势,两场的相关性一直保持的较好。(2)整个演变过程中,海面净热通量异常可以较好地解释大部分时段内海表面温度异常(SSTA)场本身的变化,变化幅度最大的地方位于苏门答腊-爪哇沿岸和20°S以南的海域;并且在其影响下,海盆在大部分时段内呈增温趋势。(3)耦合主模态两个场的空间分布都在1961—1970年到1962—1971年之间发生了唯一一次显著的变化,显著影响时间都为1971年。(4)SSTA场变化显著的地点主要位于东北印度洋和南海,为明显的正变化区,而20°S以南的海域呈明显的负变化;海面净热通量异常场分别在南海海域和赤道东印度洋及马达加斯加偏东的部分海域呈明显的正、负变化。

关键词：热带印度洋 SSTA 海面净热通量滑动SVD 主模态时空演变

Dual-quaternion-based satellite pose estimation and control with event-triggered data transmission

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Science China(Technological Sciences) 2023年第5期66卷 1214-1224页

作者： LI ChunHui ZOU HengGuang shi dawei SONG JiLiang WANG JunZheng School of Automation Beijing Institute of TechnologyBeijing 100081China China Academy of Space Technology Beijing 100086China

This paper proposes an event-triggered active disturbance rejection control framework to achieve the simultaneous position and attitude control of a satellite in proximity ***,to facilitate the satellite motion description,we derive the relative kinematics and dynamics in terms of dual quaternions with the considerations of internal uncertainties and external ***,two kinds of event-triggered mechanisms in the sensor/observer and controller/actuator channels are proposed to reduce the utilization of onboard communication resources and to improve control performance,*** observation error and tracking error of both the attitude and orbit systems are theoretically proven to be asymptotically ***,the simulation results show that the proposed method can achieve simultaneous position and attitude tracking between target and chaser satellites with satisfactory control performance and reduced communication rates.

关键词： active disturbance rejection control framework event-triggered mechanisms estimate and control position and attitude satellite in proximity operations dual quaternions

Characterization and expression analysis of an allograft inflammatory factor-1 homologue in yellow grouper (Epinephelus awoara)

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Acta Oceanologica Sinica 2008年第6期27卷 141-148页

作者： WANG Li shi dawei WU Xinzhong Laboratory of Marine Life Science and Technology College of Animal Sciences Zhejiang University Hangzhou 310029 China College of Life Science and Technology Southwest University for Nationalities Chengdu 610041 China

Allograft inflammatory factor-1 （ AIF-1 ） is a cytoplasmic calcium-binding protein involved in inflammatory response-related diseases in mammals. Previously an identified AIF-1 gene was simply reported in yellow grouper. The characterization of AIF-1 gene and its expression at the gene and protein level are further described. Yellow grouper AIF-1 is composed of 147 amino acids, and 64% ~ 84% identical to other homologues. Basal level AIF-1 mRNA expression was noted in spleen, anterior kidney and kidney, using reverse-transcription polymerase chain reaction （RT-PCR）. After stimulation of LPS, the AIF-1 mRNA expression was up-regulated in tissues examined： spleen, anterior kidney, kidney, heart and liver, but not in muscle. The recombinant AIF-1 protein was expressed in Escherichia coli, and then purified for the development of antiserum. Western blotting analysis revealed a band with a molecular mass of about 17 ku.

关键词： allograft inflammatory factor-1 epinephelus awoara expression