数字电视发射机的技术应用分析

数字电视发射机是数字电视系统的一个重要的组成部分,本文分析了数字电视发射机的主要技术,包括八个方面的技术应用:激励器的技术应用、无线传输技术应用、数字预失真技术应用、低相噪捷变频技术应用、数字微波传输系统的技术应用、功率加大器的技术应用、电视差频转播技术应用和冷却功能的技术应用,接着从三个方面分析了数字电视发射机在技术应用中要注意的问题.     

略论煤矿机电设备中变频技术的应用

变频技术凭借它的良好优势迅速席卷各行各业,给各行各业的发展带来了新的前景,通过分析变频技术的主要原理,主要从四个方面：变频技术在提升机中的应用、变频技术在皮带机中的应用、变频技术在通风机中的应用、变频技术在采煤机中的应用中分析变频技术的煤矿机电设备中的应用,同时阐述了煤矿生产中变频技术的重要性,结尾对其未来的发展做了一下简单的展望。     

多媒体与多媒体技术

本文主要介绍了多媒体和多媒体技术的概念、特点、应用以及有关的内容,阐述了多媒体技术与计算机技术、网络技术、通信技术的联系。探讨了多媒体和多媒体技术的应用和发展前景。     

RFID技术在档案管理中的应用分析

介绍了RFID技术的概念、原理和特性;探讨了RFID技术在档案管理中的应用;分析了RFID技术在应用中面临的问题;肯定了RFID技术的应用价值,推广空间较大。     

计算机应用技术在教学中的应用分析

随着科学技术的发展，现代信息技术尤其是计算机技术在各个领域中都得到了十分广泛的应用。计算机应用技术在我国的教育领域中发挥了越来越重要的作用，计算机应用技术在教学中的应用使得教学的内容更加信息化、系统化、现代化与丰富化，这些都使得计算机应用技术成为现代教学中重要的辅助教学手段。本文简单的分析了计算机应用技术的特点和计算机应用技术对教学的意义，同时介绍了在现代教学中如何运用计算机技术，发挥出其更大的作用。     

洁净煤转化技术研究现状及进展

对洁净煤技术的发展概况及洁净煤转化的技术途径进行了综述,重点介绍了洁净煤热解技术、洁净煤气化技术、洁净煤液化技术及燃煤发电技术的特点与应用,并对洁净煤技术的开发及其应用前景进行了展望。     

物联网技术在我国图书馆中的应用研究综述

通过对相关文献进行的定性与定量分析,阐述了物联网技术在图书馆中的应用研究现状,论述了物联网技术在图书馆中的应用研究的主要内容,在此基础上,对物联网技术在图书馆未来的应用研究进行了展望,包括物联网相关技术的应用、数据安全、成本控制、智慧图书馆建设等.     

区块链技术多场景应用述评

随着信息技术的飞速发展,在技术革新和产业变革中区块链技术集成应用的重要作用愈加凸显,区块链技术在多行业场景中的应用研究逐渐成为学术界热点议题.从功能、技术和发展的视角综述了区块链技术的概念界定,在此基础上,分别从金融、医疗、教育和养老4个领域总结和评述了区块链技术实现的功能和应用目标,得出区块链技术在多场景应用中的共性特征与差异特征,并对未来区块链技术的应用发展进行了展望,为探索区块链技术的场景应用推广提供理论支持.     

超导技术及其应用

本文介绍了超导技术的基本知识,着重介绍了超导技术在核聚变装置、磁悬浮列车、生物、医学上的应用,并展望了超导技术的应用前景.     

基于Java技术的网络管理应用

全面论述了目前较流行的Java技术 ,如JavaRMI、JavaApplet、Javaservlet、JDBC等技术 ,并且介绍了应用这些技术实现网络管理应用系统的方法。     

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.     

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。     

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.     

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