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.     

微电脑控制的心电数据床边采集系统

介绍的微电脑控制的心电数据床边采集系统，具有心电数据的采集、存储和向计算机传送数据的功能。它与传统的心电数据采集系统相比，着重解决以下关键技术：以51系列单片机为核心的软、硬件结构；具有12位分辨率的多通道A／D采样、多路选择功能的高性能前置放大电路；实时高效的数据压缩算法等。系统性能稳定、使用方便，非常适用于心电数据的床边采集。     

基于JPEG标准的静止图像压缩

介绍了JPEG压缩标准,详细分析了JPEG标准下的图像压缩编码和解码原理以及实现过程,并在Visual C 中通过CJPEG类提供的JPEG编码和解码函数,实现了对静止图像的数据压缩,达到了高效地存储、传输、处理图像数据的目的.     

便携式智能心电监护仪研究

针对心血管疾病的发病特点、以及国内普遍使用的心血管疾病检查仪器和手段的不完善，设计出有效的智能心电监护仪。本仪器可由病人在正常活动情况下长期携带，通过专用敏感元件，从人体连续取得心电信号送入监护仪的中央处理系统，通过与正常的心电信号比较，对心电数据实现实时检测、分析、有选择地记录，并具有重病报警等功能。为了降低功耗，减小重量和体积，采用了软件滤波，数据压缩存储等方法。该系统还可与上位机相联显示或打印出不正常的心电波形，供医务人员分析病情时参考。     

一种云辅助的移动心电监测系统

连续监测心电对发现心血管疾病和判断人体健康状况具有重要意义.新一代心电监测系统能提高便携性、降低功耗和成本,但在心电数据提取、存储容量等方面还存在局限性.为此,提出一种云辅助的移动心电监测系统,利用智能手机接收心电数字信号,借助云平台(例如BAT云、厦门市健康云)实现ECG数据存储.该系统采用基于平均绝对差分阈值的心电波形提取算法、基于小波包分解的智能报警模型和基于HL7-a ECG标准的数据交换模型,提升心电数据提取质量、报警能力和数据存储能力.系统原型能支持5种心电病变类型判别,智能报警以及心电数据云管理,从而有利于降低心血管疾病的潜在威胁.     

基于整-整小波变换的心电数据压缩算法

根据整－整小波变换理论提出了一种心电数据压缩算法，整－整映射的整数运算保证了算法的快速性。由于屏蔽函数的引入和对阈值函数进行了特殊考虑，使该算法可同时取得高的数据压缩率和信息保真度。它不仅可完整保留ＱＲＳ，Ｐ，Ｔ，ＳＴ段等临床信息，而且可有效保留心室晚电位信息。     

多媒体数据压缩技术

图像的数据量非常之大,多媒体数据压缩是一个关键技术.数据压缩可以实现实时有效地处理、传输和存储庞大的多媒体数据,本文主要介绍了多媒体数据压缩的方法和多媒体数据压缩国际标准JPEG、MPEG和H.261.     

基于Oracle的实时数据存储访问

面对快速发展的数据分析需求,流程工业实时数据库单纯的数据存储和回溯功能已不能满足实际的应用要求.以关系数据库为介质,研究了基于Oracle的实时数据获取、处理、存储和访问技术.重点探讨了实时数据的压缩存储,并给出采用Oracle数据库内部语言PL/SQL实现数据压缩算法,由于数据的存储和访问中引进了数据压缩技术,在低频率和点数较少时,该技术可作实时数据库的替代方案.给出的方法在Oracle10g企业版中测试通过,并成功应用在某大型石化企业的丁二烯分离装置上,取得了良好的效果.     

基于知识的心电图自动诊断系统的设计

介绍了基于知识的心电图自动诊断系统的系统构成及设计过程中采用的关键技术.模拟了现实世界心电专家根据心电图进行诊断的思维方式,揉进了可能性理论和模糊理论的概念,同时又避免了复杂的推理过程.其心电图病理数据库由知识库和规则库两部分组成,采用数据库形式存储.推理诊断系统采用数据驱动的正向推理结合基于CF模型的不精确推理.推理诊断系统与知识库和规则库的实际存储内容没有必然联系,所以适用于诊断型的专家系统.     

基于JPEG标准的图像压缩应用

文章通过介绍JPEG压缩标准,详细分析了JPEG标准下的图像压缩编码和解码原理以及实现过程,并在Visual C＋＋中通过CJPEG类提供的JPEG编码和解码函数,实现了对静止图象的数据压缩,达到了高效存储、传输、处理图象数据的目的。     

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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.