基于Solarwinds Orion的网络性能监控系统分析

校园网络建立基于Solarwinds Orion的网络性能监控系统,能实时监测校园网性能.通过对监测结果及应用分析,结合实际网络运行和维护经验,能快速发现和处理网络故障,大大提高网络管理维护及故障处理的效率,为数字化校园建设和管理提供借鉴,从而达到提高校园网络综合管理效率的目的.     

基于网络技术的变电站运行远程管理体系

随着计算机网络技术、通信技术、自动化技术与电力设备相结合的变电站监控系统的广泛应用,电力系统内220kV及以下变电站大部分都采用了站内无人值班,由集控中心运行人员统一监视和控制的运行模式。通过先进的网络技术对所属变电站实现远程实时图像监控、远程故障和意外情况告警接收处理,可实现对电网的可视化监控和调度,并保证变电站运行和维护的安全性和可靠性。     

飞机轮胎压力监控系统分析

飞机轮胎压力监控系统飞机轮胎压力监控系统主要用于对飞机轮胎压力进行实时监测,通过驾驶舱显示仪表向机组人员或维护人员提供轮胎的实际压力,并可对轮胎压力进行控制。     

区域自动气象站监控报警与技术保障远程支持系统的设计与实现

基于browser/server结构,以Java server pages为开发工具,设计开发了区域自动气象站监控报警和技术保障远程支持系统。系统包括自动气象站监控报警、维护维修与故障诊断素材共享、相关业务软件共享、在线支持等功能,为自动气象站实时有效的故障监控和设备的维护维修、故障诊断等提供了技术和软件支撑。运行结果表明,该设计提高了自动气象站装备保障的时效性和准确性以及气象装备保障人员的业务素质。     

飞机APU故障浅析和状态监控发展研究

APU即辅助动力装置,是现代飞机上比较重要的,但并不是不可或缺的中大型部件之一,航线维护中故障率较高,但是缺乏状态实时监控,若产生故障会经常在缺乏地面电源和气源的机场造成不必要的麻烦,该文浅析了APU气动过程故障和排故思路以及APU工作状态监控的发展和研究。     

基于数据挖掘技术的煤矿远程监控系统研究

通过对远程煤矿监控系统的分析,提出了一种基于数据挖掘技术的煤矿远程监控系统的实现方案,即通过井下数据采集工作站采集现场瓦斯与设备状态信息,并建立数据库;经Intra net/Internet将信息发送到远程监控中心;由不同的工具对信息进行处理;利用统计类数据挖掘技术对超限瓦斯数据进行分析、推断和预测。阐述了煤矿监控系统的网络运行结构和系统体系结构,讨论了数据挖掘技术在煤矿系统远程监控中的应用,并给出了相应的数据挖掘模型。     

浅析波音737NG飞机燃油系统故障

该论文主要针对飞机燃油系统的基本知识的了解,来对实际维护工作中遇到的故障进行分析,以及对燃油系统日常维护中的关键点进行分析,避免由于人为原因而造成的差错,以及燃油系统在航线维护中放行依据的相关要求.     

基于数据挖掘的煤矿电网综合管理系统的研究

针对传统的煤矿电网不能及时获取足够的井下信息,对存在的安全隐患无法预警,容易发生故障的问题,基于对数据挖掘技术的分析,提出了一种基于数据挖掘的煤矿电网管理模型的设计方案.该模型应用Vxworks嵌入式软件、工控组态软件和实时数据库技术,设计一种高效率煤矿电网运行的综合管理系统,系统结合数据仓库技术,采用分类、聚类、关联、时序搜索等多种挖掘模式,对多方面的数据进行分析、建模,达到预测报警的目的.解决了许多困扰煤矿生产现场多年的井下供电监控技术难点与安全运行中的重大隐患问题,增强了矿井的抗灾和安全生产能力,具有一定的应用推广价值.     

动力能源集控系统研究与应用

变配电监控系统综合运用计算机技术、网络技术、现代通信技术、智能检测技术、自动控制技术等领域的最新成果应用于卷烟厂,根据制丝及卷接包生产线、制冷机组、空调机组、锅炉、空压机和真空泵、给排水设备等公用设备的自身特点,对其变配电参数进行遥测、遥信、遥控,实时监控其运行参数,监测和处理故障,记录和处理相关数据,从而实现公用设施变配电的无人值守和集中维护,提高设备运行效率及可靠性,减少维护人员工作量,应用效果较为理想。     

飞行数据分析在深航飞机维修控制中的应用

该论文简要介绍了飞行数据分析的应用原理及其在飞机研制、试飞、训练、维护、及事故调查中的重要应用价值;重点阐述了飞行数据分析在深航维修控制中的实时监控,非实时监控,协助排故中的重要应用价值;并通过对比实行飞行数据分析和没有实行飞行数据分析两年的故障百事率,证明飞行数据分析在深航应用效果明显,可以减少故障率,提高排故准确性、彻底性,进而保障公司的安全性和经济效益。因此其重要的应用价值对其它的航空公司都具有重要的借鉴和推广意义。     

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     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with