基于分布式的航空订票系统分析与设计

随着网络的不断发展,分布式系统将变得越来越重要和越来越普遍。本文给出了使用Oracle作为数据库的分布式航空订票系统的设计方案以及一些关键技术的实现。     

基于分布式的航空订票系统分析与设计

随着网络的不断发展，分布式系统将变得越来越重要和越来越普遍。本文给出了使用Oracle作为数据库的分布式航空订票系统的设计方案以及一些关键技术的实现。     

运用UML构建机票预订系统模式

目的：建立一个能够方便旅客订票，航空公司快捷轻松地为旅客提供预订票服务；方法：运用UML(Unified Modeling Language)通用的可视化建模语言这种总结了以往建模技术的经验并吸收当今优秀成果的标准建模方法来构建机票预订系统模式；结果于结论：用UML构建了机票预订系统的静态模型、界面定义、使用个案、时序图、管理界面及体系结构．     

我国低成本航空公司面临的问题及发展策略

本文通过对国内低成本航空公司发展现状的分析，结合国外低成本航空发展现状，对我国发展低成本航空公司的可行性进行了系统分析。     

浅析单元测试在项目开发中的应用

本文首先对单元测试的概念、测试流程和测试框架及发展作了详细介绍,然后在开发航空订票系统的基础上,依据单元测试的需求和流程,提出了单元测试计划,并给出了具体的单元测试方案。     

外刊概要

<正>1成本还是安全:航空业如何选择【日】《AERA》2015年2月23日去年以来,世界范围内接连发生多起大型空难。事故原因不尽相同,涉事航空公司也不尽是"廉价航空"。然而,随着空中价格战越发白热化,各航空公司却都竭力削减成本。包括复兴航空在内的非廉价航空公司也被迫卷入。复兴航空去年大量采购的,同时也是今年2月出事的ATR客机,据称虽省油但却故障多发。"廉价航空"主张压缩空中服务成本、飞行员薪水及其他配备的做法与大公司无异,而且使用新机型的公司也不少,     

《旅游经济学》教学案例:东星集团的纵向一体化与东星航空的破产

2009年,中国首家民营航空公司——东星航空被迫停飞,重组失败后最终破产。有人说,这是"金融危机惹的祸";有人说,这是"鸡蛋碰石头"的结果("鸡蛋"指民营航空公司,"石头"指国有航空公司);也有人说,这是东星航空内部管理混乱所致。该文从旅游企业战略管理的角度,分析东星航空失败的原因和教训,认为盲目的纵向一体化是东星航空破产的主要原因。     

基于php网上航空购票系统的实现

随着计算机和互联网开始走进家庭,网上航空售票系统也展现出巨大的优势。在家中操作电脑,就可以查到全部的航班信息,轻点鼠标就可以完成订票付款。本文采用了PHP语言和MySQL数据库相结合,配合前台HTML语言的支持,共同实现Web页面的显示和后台数据的查询和更新。     

铁路客票网上购票系统流程探讨

本文在分析铁路实行网上订票现状分析的基础上,探讨了铁路客票网上购票系统订票、退票及改签三个系统的流程设计。     

“碳税”,交还是不交?

最近一段时间各国围绕该不该交欧盟制定的"航空碳税"而闹得沸沸扬扬。2008年底,欧盟议会通过法案,将国际航空业纳入欧盟碳排放交易体系。也就是说以2004年到2006年的全球航空排放量为基准制定一个限额,航空公司当年约85%的排放量免费,超出部分由航空公司在欧盟碳排放交易体系中购买,这被看做是"航空碳税"。     

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。     

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     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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