基于超声波距离感应的数字画廊系统的研究

网络时代文化与技术大融合背景下,数字展示系统也大幅度升级,其中超声波距离感应式数字画廊系统其实是数字展示系统中的一种,它是一个融合文化艺术作品展示结合超声波传感技术终端一体化数字平台。运用数字技术将美术画廊转化为数据、信息、虚拟等平台,可通过实时检测观察者距离,自动对展示设备开启或休眠,最终实现对文化艺术资源的观赏、评鉴、研究、保护、交流与交易的应用功能,同时达到绿色环保节能、艺术数字化展示、提升公众文化艺术素质等意义,该系统设计具有一定的前瞻性与实用性。     

基于Vweb2010芯片的视频监控系统的开发

多媒体数字视频监控系统是基于多媒体技术研究出来的一种全新监控平台。它以计算机为核心、采用高新技术、结合监控系统的实际要求及多年来不断完善的安防理论和经验，建立了一套软硬件相结合、崭新、完整的监控体系。该体系通过优化内部结构，减少了不必要的环节，提高了整体性能和反映速度，可以满足技术不断发展的需求，属于一套真正的监控管理平台。本文的主要研究方向是多媒体视频服务器的设计和开发，实现以下主要功能：视频采集、视频文件的存储以及网络视频传输、实时视频解码、播放等功能。     

实时图像处理硬件平台的设计与实现

实时图像的数字化处理技术的出现,大大地拓展了图像处理技术应用领域的广度和深度。实时图像数字化处理技术广泛应用于社会各个领域,探讨实时图像处理硬件平台的设计与实现,具有很高的研究和实用价值。本文针对实时图像处理系统平台中的硬件平台的设计与实现,进行了解、分析,基于目前所有平台现状,提出一种优化的实时图像处理系统平台。     

一种具有数字版权保护功能的多媒体社交网络平台

新兴的多媒体社交网络使用户使用和分享数字媒体内容变得更加便捷,但也使数字内容版权保护问题变得更加突出.为解决现有多媒体社交网络平台缺乏数字版权管理功能,提出了一种集多媒体、社交网络和数字版权管理为一体的综合化多媒体社交网络平台,设计并实现了该平台的B/S体系结构、系统功能、用户和管理流程.与现有的代表性多媒体社交网络平台及DRM方案对比分析得出,该方案在跨平台、在线/离线媒体使用控制和数字权利分享等方面,具有较好的安全性和功能特征.     

多媒体视频报警技术

多媒体电视监控安全报警系统，是将电视监控系统与报警系统相结合、采用实时数字图像处理技术、多媒体技术和语音合成技术、集电视监控、防盗报警、防火报警、数字视频报警、实时记录、处理决策引导、信息管理存档、日常安全保卫工作管理及日常业务工作管理等为一体，通过总线和接口、构成～个完整的网络。多媒体数字视频报警系统用摄像机作报警探头，先将摄像机获得的视源信号进行数字化，然后采用实时数字图像处理技术对数字化图像进行分析、处理、当检测到监视区域内目标的光线、位置、颜色等发生变化时，给出报警信号，同时采用多媒体技…     

WINDOWS下音视频网络传输的实现

计算机网络音视频实时全双工传输是现代网络多媒体应用技术的重要内容。本文在分析了网络多媒体应用技术的需求基础上,研究了基于W indows平台的音视频数据采集和实时全双工数据传输技术,探讨了W indows平台下音视频实时数据采集、回放和全双工数据传输的可行性,建立了在W indows下计算机网络音视频实时全双工传输方法,详细描述了该方法的编程实现,并通过实例验证该方法的正确性。     

用于《自动控制理论》课程的计算机仿真系统

本系统是为自动化实验室控制理论计算机仿真实验从DOS平台升级到WINDOWS平台，实现全中文化而设计的。VB灵活的WINDOWS界面设计与MATLAB强大的计算功能巧妙的结合，实现了应用系统的无缝集成。运用多媒体技术使人机交互方式更加友好，界面生动、形象、直观。用户可以运用此软件从不同角度对控制系统进行分析、设计、计算、仿真，以及对分析结果进行实时直观的图形化显示。     

多媒体CAI教学平台的设计与实现

多媒体ＣＡＩ教学平台的设计与实现朱群雄徐晓明周晓莉（北京化工大学计算机系，北京，１０００２９）关键词ＣＡＩ；教学平台；多媒体分类号Ｇ４３４引言多媒体技术是集声音、视频、静止图象、动画等多种信息于一体的信息处理技术，它可以接受外部图象、声音、录象及各种...     

数字无线电子终端的关键技术研究

本论文以实现数字无线电子终端关键技术为主要研究方向和目标。通过对数字无线电子终端中嵌入式软硬件平台,Linux设备驱动技术、无线接入技术进行深入研究,并结合硬件原理图的设计,研制出了具有WiFi无线可视对讲功能的样机。该样机实现了点对点的无线音频双工实时传输,图像的单向实时传输,可广泛应用于住房小区、别墅等门禁系统中,具有较大的现实价值和意义。     

浅析云计算技术对校园信息化的影响

基于云计算技术的教学资源平台建设目标是整合和优化有限的教育教学资源,构建开放式的教育教学资源平台,实现优质教育教学资源的共建和共享。云计算技术在促使教育资源互通、改变传统教学方式和促进节约型数字校园建设等方面展示了它的独特优势。学校和教师应充分考虑云计算技术的优势与不足,确保云计算技术能够真正给校园的信息化建设带来有利之处,为学校、教师和学生提供一个云服务的平台,实时和动态地把教学资源提供给使用者,实现教育资源的分享与交互。     

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.     

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.     

A computer generator for randomly layered structures

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

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.