基于CDMA2000移动目标的探测方法研究

针对目前车载式移动目标探测系统复杂、受环境影响较大、灵活性差等缺点,提出了一种基于CDMA2000移动目标的手持式设备探测的实现方案,介绍了手持式探测设备的各个模块功能,给出了整个系统工作原理及流程,重点描述了手持式设备探测的实现方案,最后又提出了进一步的实施措施。     

船载雷达手持式控制器设计与实现

本文介绍了一种船载雷达手持式控制器的设计与实现方案。该方案利用触摸屏作为人机交互接口,与可编程逻辑控制器(PLC)进行数据交换,从而实现对雷达的控制。方案完成的控制器很好地解决了船载雷达日常维护中存在的问题,提高了维护的工作效率,增强了设备和人员的安全性。     

基于Zigbee技术的电梯远程监控系统实现

本文利用Zigbee无线传输技术实现电梯监控设备的远程组网,实现电梯运行状态参数的采集与监控,在保证信号稳定传输的前提下,提出来一种系统运营费用较低的电梯远程监控系统实施方案     

基于IEEE1394总线的无线光通信系统

利用光总线进行通信可以极大的提高无线光通信系统的整体性能。文章将IEEE1394总线和无线光通信系统的优势结合起来,使用IEEE1394总线连接无线光通信设备,提出了一种新的无线通信方案,实现了高速无线传输,重点给出了IEEE1394设备与光通信设备间的接口电路的实现方法。     

基于WSN的设备运行信息监测系统设计

针对大型设备运行信息的监测问题,提出利用传感器节点、控制节点和网关节点构建无线传感器网络（WSN）的设备运行信息监测系统方案,实现对工矿企业各种生产设备的运行状态的智能监测和控制。     

一种频谱监测无线传感器节点的设计与实现

针对频谱监测设备低成本、小型化的需求,提出了一种基于无线传感器网络的频谱监测方案.该方案利用频谱接收模块采集空间FM(frequency modulation,调频)信号;使用控制器模块对数据进行处理,并通过无线传感器网络的方式实现节点间的组网通信,完成数据的无线传输;采用斐波那契优化算法处理节点采集的数据.测试结果表明基于该小型化的无线电频谱监测节点可实现网络化的对FM信号的采集和无线传输,使用的算法能准确地提取有效信号.     

基于Cortex-M3的无线脉搏测量仪

手持式脉搏测量仪由Cortex-M3内核的STM32F103VCT6核心模块、脉搏采集模块HKG-07、WIFI无线传输模块HLK-RM04等组成,具有体积小、精度高、使用方便、测量数据无线传输等特点,实现了远程无线脉搏测量,描绘脉搏图像等功能,供医生参考。     

无线设备状态监测系统在钢铁厂的应用

设计了一种无线传输的工业设备状态监测预警系统,该系统采用低功耗ATMEGE88单片机和CYRF6936无线数据收发模块实现设备点检、数据采集和远距离无线传输;应用无线设备标识牌实现设备编码与测试点编号灵活配置,以实现设备运行状态实时在线/离线监控.     

基于联盟链的无线接入系统中凸优化资源分配算法

由于在数据共享和信任上的特点,区块链及其联盟链可能被集成到新一代的无线接入系统.针对大规模物联网应用场景所需要的安全接入机制,提出一种分布式的安全资源分配方案.该方案是一种凸优化证明共识机制,并且便于解决优先级问题.仿真结果表明,所提算法能够在大设备数目下提高无线接入网的安全性能和实现差异化的无线资源共享.     

基于ISP技术的电子公告牌系统

ISP技术是一种无需将芯片从设备上取出就能对其进行编程的技术,广泛用于FLASH芯片等电子应用领域。本文介绍了ISP技术应用特点,然后针对单片机构成无线串行数据传输系统,提出利用带ISP单片机结合无线数据传输实现无线ISP。接着给出基于无线ISP系统的电子公告牌系统设计并介绍其主要功能,最后结合设计讨论利用单片机实现无线ISP技术的发展应用前景。     

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.     

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.     

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.     

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.     

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.     

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