Sofeware and Hardware Design of Connecting-machine Based on HT46R24

随着家校之间联系的要求不断提高,对相关系统的要求越来越多,为了解决上述问题,简单介绍了一种低成本的无线传输系统方案,在选型上以合泰单片机为核心,完成了以单片射频收发器无线模块为主要工作方式的通信硬件设计,就平台的初始化,模块发送,接收给出了设计分析,最后通过实验数据分析,实现的功能满足设计要求,整个系统具有较高的实用性。With the development of communication between schools and families and the increasing demands for the related system,this paper proposes a low-cost solution of radio transmission system.With MCU HT46R24 as the core technology,radio transmission of nRF2401 as the main tool,the hardware design of the communincation system is completed.This paper gives the design analysis on initialization of the platform,the receiving and sending of the module.Experiment indicates that the design could satisfy all the functional requirements and the whole system is of fairly high practical applicability.福建省重点科技计划项目(No2008H0036

一种学习的水声传感器网络ALOHA协议

针对水下随机竞争MAC协议产生的数据之间的严重碰撞问题,依据网络学习的理念,提出了一种基于学习的L-ALOHA(Learning-ALOHA)协议,协议中的每个传感器节点通过不断地学习来寻找各自节点的最佳传输时间,并选择最佳时刻传输数据包.仿真结果表明:L-ALOHA协议在吞吐量和平均端到端时延方面优于UW-ALOHA(Underwater ALOHA)协议和UWS-ALOHA(Slotted ALOHA)协议.福建省自然科学基金项目(2017J05109);;\n电子信息与控制福建省高校工程研究中心开放基金项目(EIC1706

第十八届美国理论与应用力学大会总结

1会议概况2018年6月5—9日,第18届美国理论与应用力学大会(18th U.S. National Congress of Theoretical and Applied Mechanics, USNCTAM2018)在美国芝加哥召开.本次大会由美国力学国家委员会和中国力学学会联合主办,旨在探讨和交流近四年世界范围内在理论和应用力学领域的基础研究、创新技术的最新进展,吸引了来自世界各地的近千名专家学

Research on Core Techniques of Underwater Acoustic Sensor Network Node Localization

进入新世纪以来，随着陆地资源的日益枯竭，世界各国纷纷把目光投向海洋这一蕴藏丰富资源的宝库。海洋是人类生存活动十分重要的领域，随着人类社会的不断发展，人们需要借助海洋中部署水声传感器网络进行海洋研究。由于水声信道是一个十分复杂的时－空－频变参随机多径传输的信道，加上它的环境噪声高、带宽窄、可适用的载波频率低和传输的时延大等特点，使得水声传感器网络面临着一些特殊的挑战，这些挑战要求新的架构和协议来保证水声传感器网络的传输性能。 水声传感器网络节点定位技术作为水声传感器网络的关键技术之一，在数据标识和收集、水下节点跟踪和探测目标节点位置信息等方面都有广泛的应用，并且水声传感器网络节点定位还可以用来...Since the new century, as the increasing depletion of the land resource, many countries put their attention to the rich marine resources. The ocean is very important field of people’s activities. With the continuous development of human society, people need to do the marine research in the ocean using the underwater acoustic network. Because the underwater acoustic channel is very complicated with...学位：工学博士院系专业：信息科学与技术学院_通信与信息系统学号：2332010015404

Waterworks flocculants dosing control system based on machine vision and fuzzy control

在自来水厂水处理工艺流程中实现絮凝剂自动投加是目前迫切需要解决的问题之一。文章提出了一种基于机器视觉和模糊控制的全自动自来水厂絮凝剂投加控制系统，系统首先通过摄像头采集水样图像，通过图像处理得到水质参数，然后根据参数映射得到絮凝剂的投加量，通过模糊PID控制以及上位机PC与下位机可编程逻辑控制器（programmable logic controller，PI，c）之间的通信实现对絮凝剂的自动投加。系统通过软件和硬件相结合能较好地实现图像处理分析，完成絮凝剂投加量的控制。The realization of automatic flocculants dosing in water treatment process has become one ofthe problems which need to be solved urgently in the development of waterworks in recent years. Inthis paper, a kind of low cost automatic waterworks flocculants dosing control system based on ma-chine vision and fuzzy control is put forward. The system first collects water samples image by camer-a, obtains water quality parameters through the image processing, and then gets flocculants dosageaccording to the parameter mapping. Finally, it realizes the flocculants dosing automatically throughthe fuzzy proportion integration differentiation（PID） control and the communication between PC andprogrammable logic controller（PLC）. This system mainly has been developed with the combination ofsoftware and hardware, which can realize the image processing analysis and realize the flocculants do-sing control automatically.国家自然科学基金资助项目（61501386;61471308;61571377

The Construction of Expression Vector pIRES2-EGFP-HdiActinP-AFP for Transgenic Small Abalone Haliotis diversicolor Using Antifreeze Peptide Ⅲ

现代转基因技术是一种快速改良品种特性的有效方法.采用转基因技术提高我国南方重要贝类经济养殖品种——杂色鲍的耐低温特性是扩大其养殖范围的重要手段.以PIrES2-EgfP为基本载体,以合成并经过功能鉴定的抗冻肽(AfP)和杂色鲍肌动蛋白启动子(HdIACTInP)为插入元件,首先用限制性内切酶bAMHⅠ和ECOrⅠ对基本载体PIrES2-EgfP和AfP-Ⅲ进行双酶切,目的酶切产物被回收后再连接得到载体PIrES2-EgfP-AfP.随后利用限制性内切酶SACⅠ和ECOrⅠ对载体PIrES2-EgfP-AfP和HdIACTInP进行双酶切,目的酶切产物被回收后再连接最终得到杂色鲍转AfP-Ⅲ的表达载体PIrES2-EgfP-AfP-HdIACTInP,经过聚合酶链式反应和测序验证证明载体构建成功.Small abalone,Haliotis diversicolor is one of important maricultural species which distributes in South China.Modern transgenic technique is a rapid and direct way to improve characterization of aquaculture species.It enables us to breed a new line of small abalone which has a low temperature-resistant feature so that it can be cultured in wider areas than now.In this study,pIRES2-EGFP was used as the basic vector,and the antifreeze peptide Ⅲ and HdiactinP were used as inserting elements.Firstly the vector pIRES2-EGFP and segment AFP were digested with the restriction endonuclease BamHⅠ and EcoRⅠ.The target components of the digested product were ligated consequently and the vector pIRES2-EGFP-AFP was constructed.Secondly the vector pIRES2-EGFP-AFP and segment HdiactinP were digested with restriction endonuclease SacⅠand EcoRⅠ.Then the target components of the digestion product were ligated.Finally the transgenic H.diversicolor antifreeze peptide expression vector pIRES2-EGFP-AFP-HdiActinP was constructed,which was confirmed by polymerase chain reaction(PCR)and sequencing.In summary,our result provided a potential basis for the consequent development of the transgenic H.diversicolor researches.国家863计划课题(2006AA10A407);农业科研专项(nyzx07-047);现代农业产业技术体系建设专项(nycytx-47)资

Error Analysis on Observational Data of Temperature and Salinity in the Shallow Seas

温度、盐度观测资料的误差分析结果表明：浅海区温、盐的观测误差冬季较小，分别约为0.4℃和0.2；夏季较大，在跃层附近层次由定深偏差所引起的温、盐观测误差分量分别可达1.32℃和0.11.温、盐的资料误差更大，夏季跃层处温、盐的日替代资料误差分别可达2.62℃和0.17.作者还就造成观测误差、资料误差的原因作了分析，对合理使用历史调查资料提出意见.The errors on the observational data of temperature (T) and salinity (S) in the shallow seas are analyzed.The results show that: the TS observational errors are smaller in winter with the values of about 0.4℃ and 0.2 respectively, but greater in summer, and especially in the thermocline layers, where the TS observational error components caused by depth deviation can reach 1.32℃ and 0.11, respectively.The TS data errors are much greater, e.g.in the summertime thermocline layers, where the TS daily substituting data errors can come up to 2.62℃ and 0.17, respectively. The reasons For the observational error and data error have also been analysed,and the suggestions For using such data have been proposed

Cloning and Sequence Analysis of the Abalone H.diversicolor diversicolor's Actin Promoter

杂色鲍(H.diversicolor diversicolor)是我国华南地区重要的海水养殖对象,作为利用转基因技术改良杂色鲍品质研究工作的首要部分,作者利用PCR和染色体步移(Genome Walking)方法克隆了杂色鲍肌动蛋白基因编码区部分序列和启动子序列(GenBank登陆号:EU622901).所分离的肌动蛋白基因DNA序列片段全长为1 990 bp,与GenBank中彩虹鲍(Haliotis iris)肌动蛋白A1基因序列和肌动蛋白A1a基因序列有非常高的相似性(99%和96%).在基因编码区中间发现了一个内含子区,在编码区之前发现一个类启动子区,经过Promoter Prediction在线软件分析,发现了该启动子序列和转录起始位点,同时也发现了该启动子特有的启动元件两个标准的CAAT BOX和一个TATA BOX.这些实验结果表明所克隆的杂色鲍肌动蛋白和启动子序列符合实验的目的,并且这一实验的成功也为下一步利用所分离的启动子做杂色鲍转基因工作打下基础.H.diversicolor diversicolor(the small abalone) is the important aquaculture species in South China.As the primary part of the study in the transgenic small abalone,the sequence fragment of the Actin gene and its promoter was cloned and characterized by using the technique of PCR and Genome Walking(GenBank Accession No.EU622901).The length of the isolated sequence fragment of the small abalone Actin is 1990 bp,which has high similarity with the A1 gene and A1a gene(99% and 96%) of the Haliotis iris.A promoter-like sequence and an intron sequence before the Actin gene coding region was conjectured by sequence analysis.Starting elements,two CAAT BOXes and a TATA BOX,have also been identified by using online software Promoter Prediction.All these experimental results show that the sequence of the Actin gene we cloned from the small abalone is in according with the experiment purpose,and these results could be the foundation for transgenic operation.国家863计划课题(2006AA10A407)资

人工放射性核素在海洋鱼类中的富集、分布及放射损伤研究进展

人工放射性核素是全球核污染的根源,随着全球沿海核能利用的快速发展,加之苏联切尔诺贝利和日本福岛核泄漏事故的影响,国际社会愈发关注海洋核污染问题和由此带来的公众健康问题。人工放射性核素由多种途径入海,并在海洋中迁移扩散,经食物链富集于高营养级的海洋鱼类体内,一旦其经渔业捕捞进入市场,最终将危害人类健康。本文全面回顾和综述了人工放射性核素的入海途径和扩散迁移方式,以及其在海洋鱼类体内的富集、分布和放射损伤效应等方面的国内外研究进展,并分析了当前海洋核安全现状,针对海洋渔业面对的核污染问题,提出未来应加强人工放射性核素沿食物链向上传递的机制、携带人工放射性核素的海洋鱼类洄游模式、慢性核辐射对鱼类不同生活史阶段可能产生的影响及建立新的国际海洋核安全标准体系等方面的相关研究,以期为海洋核污染的全球治理提供科学参考

人工放射性核素在海洋鱼类中的富集、分布及放射损伤研究进展

人工放射性核素是全球核污染的根源,随着全球沿海核能利用的快速发展,加之苏联切尔诺贝利和日本福岛核泄漏事故的影响,国际社会愈发关注海洋核污染问题和由此带来的公众健康问题。人工放射性核素由多种途径入海,并在海洋中迁移扩散,经食物链富集于高营养级的海洋鱼类体内,一旦其经渔业捕捞进入市场,最终将危害人类健康。本文全面回顾和综述了人工放射性核素的入海途径和扩散迁移方式,以及其在海洋鱼类体内的富集、分布和放射损伤效应等方面的国内外研究进展,并分析了当前海洋核安全现状,针对海洋渔业面对的核污染问题,提出未来应加强人工放射性核素沿食物链向上传递的机制、携带人工放射性核素的海洋鱼类洄游模式、慢性核辐射对鱼类不同生活史阶段可能产生的影响及建立新的国际海洋核安全标准体系等方面的相关研究,以期为海洋核污染的全球治理提供科学参考