基于Android移动式心电监护系统的设计

设计了一种基于Android的移动式心电监护系统,该系统由STM32嵌入式心电采集模块、串口蓝牙模块、Android智能手机组成.嵌入式系统采集心电数据,通过蓝牙传输到Android智能手机终端,在手机端实现心电数据的显示、存储,并通过百度云客户端实现心电数据上传,以实现与远程医疗中心的交互.     

基于GSM短消息的远程温度监控系统的设计与实现

综合无线数据通信、数据采集与单片机等技术优点实现基于GSM短消息的远程温度监控功能.完成相关硬件设计(DS18B20温度采集电路、LCD显示电路及GSM模块等)和软件设计,并使用单片机通过串口发送AT指令控制GSM模块发送短消息,以实现温度的无线传输和远程监控.     

动态心电Holter的改进设计

本文介绍了一种动态心电Hoker的改进设计。系统以MSP430F149单片机为核心,实现对心电信号的采集、处理、SD卡存储、LCD显示、USB数据传输,并控制无线通信模块MC35i实现动态心电Holter中的SMS无线数据传输。在有GSM网络覆盖的区域内,在本地监护端和远程接收端之间实现短消息形式的异常报警信号和心电数据的无线传输。     

基于嵌入式系统的心电无线远程传输系统

研制了一套适用于远程急救或家庭远程监护的基于嵌入式处理器Intel SA-1110的心电无线远程传输系统．该系统硬件部分由数据采集模块、数据存储及显示模块、GPRS模块及嵌入式微处理器Intel SA-1110组成．数据采集模块负责心电的采集、滤波及A／D变换；数据存储和显示模块完成心电数据的存储、波形显示；GPRS模块实现心电信号的无线远程传输；Intel SA-1110控制全系统及各模块间的通讯；软件部分包括基于嵌入式操作系统WinCE开发的病人管理程序和基于Windows开发的远端心电服务器软件．在1天内5个不同时段进行数据传输实验，比较采集的心电信号与远程服务器接收的信号，误码率为零，传输速度为12．5～35kb／s．     

一种基于移动通信远程心电监护终端的设计

为了使患者能够不受时间、地点等因素影响而接受实时远程心电服务，提出了一种便携式移动监护终端的设计．由多个移动终端与监护中心组成一个远程心电监护系统来实现远程会诊和远程监护．移动终端由4个模块构成：心电采集处理模块、主控模块、电源模块和无线模块．此外，还设计了在DSP上的心电分析、压缩算法，以及在主控制器上的基于TCP／IP协议的传输程序、该终端具有心电采集分析、无线传输、语音和短信通信功能、通过对终端的功能测试表明，该设计较好地满足了预定要求．     

可远程监控的智能防盗系统研究

设计了一种以单片机为核心模块的结合个人计算机技术与智能手机技术的远程智能防盗系统。实验证明,在个人计算机的控制下能将家居信息实时更新报告给智能手机,智能手机也会由个人计算机进行统一管理和控制。测试结果说明此系统能达到与户主实时交互、方便控制、智能反应的要求。     

基于AT89S52与AM7910的远程无线监测系统设计

设计了一种远程无线数据采集的整体架构,主要是由单片机AT89S52、调制解调器AM7910和无线电台构成,利用传感器采集现场数据,通过单片机控制和无线数传模块发送接收数据,将数据传入计算机处理与显示等.系统具有信息传输可靠,成本较低,适于在野外环境下无人值守时的监测.     

基于移动通信网的心电监护中心的设计与研究

针对远程心电监护系统中监护中心的设计进行了介绍，包括数据通信模块、数据库设计以及管理软件的设计。本系统具有心电采集分析、无线传输、语音和短信通信功能，实现了真正意义上的远程救治，提高了远程监护水平。     

基于GPRS的油井远程监控系统的设计

设计了一种以MC39i的GPRS模块和AVR单片机为研究对象的GPRS油井远程监控系统,该系统硬件部分功能是负责实时采集油井运行的各种生产数据,并将这些信息经无线网络发送给监控中心服务器.客户端软件将服务器分析出的数据以用户需要的方式显示给用户,并对油井的异常状态进行报警提示.该系统具有运行稳定、传输及时高效等特点.在工业控制领域可被广泛应用.     

基于STC单片机和GPRS技术的低压电网参数检测系统的研究

介绍一种基于STC单片机和GPRS技术的电网参数检测系统,实现对电网参数的远程监测和分析．系统采用STC单片机作为核心控制芯片,配合GPRS远程通信模块实现数据快速采集及远程快速传输,具有接口类型丰富、性价比高等特点,拥有广阔的应用前景．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the