Web server design of the embedded system based on Android

随着InTErnET技术的兴起,在嵌入式设备的管理与交互中,基于WEb方式的应用成为目前的主流。本文主要论述了基于AndrOId系统环境,在家庭网关中实现嵌入式WEb服务器的设计方法,介绍了I-JETTy嵌入式WEb服务器,及其WEb应用功能的实现。By the internet technology rising,the application of Web becomes the mainstream in the management and interactive for embedded devices.The paper mainly presents a design method which implements the embedded Web server based on Android.A kind of embedded Web server called i-jerry and the realization of the web application function are introduced厦门市科技计划项目资助(3502Z20113005); 厦门大学大学生创新创业训练计划资助(0630-ZX11A1

A high-resolution study of particle export in the southern South China Sea based on Th-234 : U-238 disequilibrium

During a spring intermonsoon cruise in 2004, depth profiles of total and particulate Th-234 in the upper 100 m were collected at 36 stations in the southern South China Sea (SCS), covering a surface area of similar to 1.0 x 10(6) km(2). Thorium-234 was sampled by using a modified small-volume MnO2 co-precipitation technique, which allows mapping the Th-234 distribution with a high spatial resolution. A stratified structure of Th-234/U-238 disequilibria was generally observed in the upper 100 m water column, suggesting that the euphotic zone of the southern SCS in this season can be separated into two layers: an upper layer with low export production rates and a lower layer with high export production rates. At the same time, we observed extensive zones of Th-234 excess within the euphotic layer, which is possibly due to intense remineralization of particulate matter. Particulate organic carbon (POC) export was estimated from a three-dimensional steady state model of Th-234 fluxes combined with measurements of the POC/Th-234 ratio on suspended particles. The POC export for this region varied from a low of -10.7 +/- 1.5 mmolC m(-2) d(-1) to a high of 12.6 +/- 1.1 mmolC m(-2) d(-1), with an average of 3.8 +/- 4.0 mmolC m(-2) d(-1). A negative flux of POC export is interpreted as the result of lateral input of particulate matter from nearby waters. Regional patterns in POC export show enhanced fluxes along the western and southern boundaries of the study region, and a "tongue'' of low export extending northwestward from similar to 7 degrees N 116 degrees E to similar to 10 degrees N 111 degrees E. This geographic distribution is consistent with the overall surface circulation pattern of the southern SCS in this season

The Design and Research of the Powerfrugal Library’ Environmental Monitoring System Based on Wireless Sensor Network

随着经济的高速发展，文化建设越来越深入和全面，我国的图书馆数量也在迅速增长，有效促进了人民的精神文明建设。但同时，如何保证图书的使用寿命，为读者提供一个良好的读书环境，并做好图书馆的节能工作，成为了图书馆建设发展中不可忽视的问题。本文从这些问题出发，调研了当前我国图书馆的现状，结合近年来最热门的技术之一无线传感器网络技术，设计并实现了图书馆环境监测系统，能有效地监测图书馆的温湿度环境变化情况，为上述问题的解决提供了一条有效的途径。 该监测系统主要包括无线传感器监测网络和上层应用软件两大部分。监测网络主要用于采集和传输图书馆温湿度等环境数据，上层应用主要为通过Web等相关技术实时查看环境数据...As the rapid economic development and increasing deepening and strengthening of culture construction, the quantity of our country’s libraries is mushrooming, which facilitates the citizen’s spiritual civilization. In the meantime, how to ensure that the service life of books, create a favorable reading environment and complete the energy-saving work of the library have become non-ignorable proble...学位：工学硕士院系专业：信息科学与技术学院_通信与信息系统学号：2332010115312

基于ZigBee的无线传感器网络的自愈功能

无线传感器网络(wireless sensor network,WSN)中如何延长路由节点的生命期和保证网络正常运行非常重要.以WSN主控芯片CC2430为硬件基础,建立了在ZigBee协议下固定节点的链状网络路由模型,提出了一种网络自愈的方法,即为每跳路由节点配备一个备用路由节点,利用高斯算法对各路由节点接收信号强度(received signal strength indi-cation,RSSI)值进行检测,依据检测的RSSI值判定电池的供电情况,进而决定是否启动处于睡眠的备用路由代替当前路由承担相应的工作.实验结果表明,在没有环境因素的情况下,可以较好地实现自愈功能

梧州市生活垃圾高固体厌氧发酵产甲烷

以梧州市的生活垃圾为原料,针对其难降解部分含量相对较高的特点,进行高浓度中温（35±2）℃批式厌氧消化实验,主要研究TS的3个设置浓度对厌氧消化稳定性及性能的影响.结果表明,分别为20%、25%和30%的3种TS均能实现稳定的产甲烷过程,在整个过程中没有明显产生挥发性脂肪酸的抑制,pH能实现自稳态调控;TS为20%、25%和30%的厌氧消化的累积产甲烷量为93.06、105.92和117.23L/kgVS;较低的总固体浓度有助于缩短厌氧发酵周期,而较高浓度可提高产甲烷效率

青鳉干细胞及其应用

干细胞广泛存在于多细胞生物的早期胚胎和成体组织中.干细胞的多能性和易操作性使其在发育生物学和再生医学上具有巨大的研究和应用价值,如细胞发育潜能的调控、细胞命运的决定、细胞治疗等.干细胞培养是研究干细胞研究工作的基础,主要集中在小鼠、人和青鳉这3种脊椎动物上.青鳉是一种小型淡水鱼,常被用作发育生物学和生物医学研究的模式物种.本文将主要介绍青鳉干细胞系及其应用.青鳉的MES1是除小鼠以外的第一个胚干细胞系;SG3是第一个成体精原干细胞系,可以在体外形成具有运动能力的精子;HX1是首个单倍体胚干细胞系,通过核移植技术,将该单倍体细胞的细胞核移植到未受精卵细胞中,得到第一个可育的半克隆动物霍利.这些突破使青鳉毫无疑问地成为干细胞研究的理想模式