简单接口实现虚拟现实网络导游

用虚拟现实技术实现网络模拟现实世界的实时交互是网络上正在兴起的一项新兴技术,目前已经有一些成功的案例出现。本文讨论的是使用虚拟现实技术开发网络导游这项服务。同时,为避免大规模的编程和涉及到一些互不兼容技术的使用,作者提出利用网络上较通用的VRHL／X3D ASP技术,使用简单的信息传递接口技术,配合数据库的应用,就可以构建出易于开发和维护的虚拟现实导游项目。     

叠压给水设备二级串联加压供水问题对策

针对某依山而建的住宅楼盘,二期工程建设时方案进行了较大的调整,使得与一期工程同时交付使用的叠压给水设备的扬程和流量都不能满足住宅小区用水需求的问题,采用了在二期工程内增设一套叠压给水设备,通过两套设备二级串联接力加压供水的方法来满足二期住户的用水需求,为了实现两套设备协调运行和弥补第一套设备供水量的不足,对第二套设备系统配置进行了优化设计。运行效果良好。     

The Characteristics ofEmailLanguage onInternet

With the popular use of computer in our life and work, the E-mail has become the important medium of people＇s communication insteadof letter, fax and telephone. The E-mail language has its own unique characteristics. On one hand it tends to be oral, informal,on the other hand it resemblesthetraditional letter which has the fixed structure of discourse .By analyzing the E-mail language features we can use the communication tool correctly.     

Earth Observations in China and the World： History and Development in 50 Years

Remote sensing, which came into being at the first International Symposium on Remote Sensing of Environment （ISRSE） 50 years ago, has enabled people to obtain objecive and realistic spatial and temporal information through the application of Earth observation technologies and analyze and understand the macro-level changes of the Earth system from a spaial view. The technology of Earth observaion from space has incomparable advantages in the study of the Earth. This aricle introduces the 50-year development of Earth observaion in the world and the 30-year development of Earth observaion in China and reflects on the building of China＇s Earth observaion system.     

首都机场旅客捷运系统运行数据管理

首都机场3号航站楼内的旅客捷运系统(APM系统)是中国大陆机场中首个无人驾驶的全自动旅客运输系统,承担着三号航站楼T3-C、T3-D、T3-E之间的重要旅客运输任务。APM管理部门每日需记录大量的系统运行数据以及故障信息等,信息量大且形式分散,数据记录及统计分析需耗费大量的人力时间。因此建立APM系统运行数据管理制度,并开发APM运行管理数据库,通过规范化的数据管理和有力的数据统计工具,有效的提高工作效率,提升管理能力。     

媒质中电磁波传播的FDTD仿真

时域有限差分法（FDTD）近年来在很多工程实际问题中都得到了广泛应用.本文首先分析了FDTD法应用于电磁波传播中的关键技术,然后对电磁波在实际媒质中的传播情况进行了模拟.结果表明,FDTD法能够模拟波的自然传播情况,并能显示全空间的场强分布,在电磁波的传播分析中有着巨大优势.     

输油泵体活塞孔的加工

输油泵体活塞孔的圆度、粗糙度对输油泵的性能影响很大.本文对输油泵体活塞孔加工改进过程中各种加工方法进行分析比较,并得出了最终满意的加工方案.     

SSK视域下命题公式“2+2=4”的真理性及其超越

命题公式"2+2=4"究竟是基于经验和直觉的判断,还是数学严格化的推论?巴恩斯和布鲁尔坚持对上述公式进行囿于科学知识社会学视域的归因,虽有其合理性但却显偏颇。命题公式"2+2=4"具有经验性、真理性、理想化等多个维度下的广深差异性,在数学的严格性、演绎性与其经验性、应用性之间形成的谱系,关联着数学知识的多样内在化和层级同一性。     

An Aircraft Navigation System Fault Diagnosis Method Based on Optimized Neural Network Algorithm

Air data and inertial reference system （ADIRS） is one of the complex sub-system in the aircraft navigation system and it plays an important role into the flight safety of the aircraft. This paper propose an optimize neural network algorithm which is a combination of neural network and ant colony algorithm to improve efficiency of maintenance engineer job task.     

How to Improve the Education Methods in China

This essay is to analyze the education methods in China, and try to explain what is quality education in my opinion, If we want to change the situation in nowadays, we must think out a suitable way for our education in near future.     

Design and Implementation of a Video-on-demand Web Site Based On Streaming Media Technology

Summary：This pager is beginning with overview of streaming media technology at first. After analysis and comparison of several current main technology for streaming media, the pager give an exarnple of design and implementation of a video-on-demand web site based on Windows Media from one of author＇s company works.     

不做＂比＂字译的than

Classroom teaching is the main way for students to learn English. In teaching English, we should not only teach the students how to read and write English words, but we should also teach them how to use the words. In this paper, we will disscuss some different use of＂than＂.     

浅谈误入带电开关柜的隐患与对策

XGN2型开关柜作为早期10千伏常用开关柜,使用较为普遍,某变电所主变10千伏XGN2型开关柜,在柜内带电情况下可以打开前柜门触及带电部位隐患,详细分析原因,提出多种整改方案,并对各项方案进行分析比较,最终通过改变防误装置措施,切实有效达到防止误入带电间隔目的,防止人身伤害事故发生.     

Grice＇ s Cooperative Principle and Humor

In this article, attention will be focused on the relationship between the cooperative principle and humor. Grice claimed that for the sake of the success of communication, both sides have the obligation to provide enough and proper information for a successful communication, and try to have the related reaction.     

《罗伯特·弗罗斯特的诗的“恐怖”的一面》

Robert Lee Frost had been forty when his poetry ＂caught on＂ with the American public but from 1914 to his death he was probably the nation＂ s best-known and best-loved poet. Most of people think that Frost＂ s poems are cozy, homey, and easy. But Frost＇ s poems are always full of profound meaning. And at Frost＇ s eightieth birthday party, Lionel Trilling even shocked a number of Frost＂ s friends and admires by declaring that Frost was a ＂terrifying poet＂ . My paper will focus on this ＂terrifying side＂ of Frost＇ s poems to see the nature, society and people     

Improve Students＇ Listening and Speaking Ability in Intensive Course

It is particularly important and necessary to try to make inlensive course interesting and effective for the students. Their study will become a lot more effective if the sludents eome to the classroom willingly instead of being forced to. That is 1o say, how a leacher can succeed in arousing the students＇ interest in intensive coarse mid making the students more active and aggressive in thinking, listening and speaking. For this purpose, we should change the leacher dominaled class for a student-centered one.     

DESIGN OF INTERNETWORK MANAGEMENT BASED ON VLANs

Implement VLANs essentially creating smaller broadcast domains at layer 2, means that broadcasts sent out from a node in one VLAN won t be forwarded to ports configured to belong to a different VLAN. In this paper, we assigning users to VLAN groups on a switch, this help to gain the flexibility to add only the users you want into that broadcast domain regardless of their physical location. This setup can also work to block broadcast storms caused by a faulty network interface card （NIC） as well as prevent an intermediate device from propagating broadcast storms throughout the entire internetwork.     

成都市金牛区广场体育活动开展现状及对策研究

本文采用文献资料法和问卷调查法等研究方法,在对成都市金牛区广场体育活动开展现状进行实地调查的基础上,分析了成都市金牛区广场体育活动开展面临的一些问题,并提出相应的对策和建议。     

浅谈棘轮离合器设计

由于棘轮离合器具有结构简单、使用方便、可靠性高等优点,故其在各种较为先进的传动系统中广泛用作离合器。本文通过对棘轮离合器结构设计及强度计算的描述,介绍了其结构及强度设计、装配、试验时需要注意的问题。     

The strategies of improving listening

Many students in college are all have one felling is that their English are progressing well, the graimnar are now familiar, the reading comprehension are no problem, communicating also quite fluently, but： Listening is still a problem! So, how to listen？ And how to improve listening ability effectively？ Methods are very important. This paper will provide some strategies in the training of listening.