网络安全与国家安全论文范文英文版

可以直接google里面打中文自动翻译如果你连这3000千字都不想打你连这4年父母辛苦给你的学费都是糟蹋

Data Management1 why Data Management ? We have already considered hardware and software in some In this chapter， we turn our attention to a third basic computer resource， Many computer applications require that data be stored for subsequent [1] Simply storing the data is not enough， A typical computer system， even a small one， can have dozens of disks and tapes， each holding data for dozens of different For any given application， one and only one set of data will We must be able to store， Locate， and retrieve the specific data needed by a given That is the concern of data 2 Accessing DataImagine a single diskette containing several For a particular application， only one of those programs will How is a given program selected， loaded， and executed? In Chapter 6， we learned that the operating system， responding to a use’s command， reds the disk’s index， searches it for the requested program name， extracts the program’s track and sector address， and issues primitive commands to read it into main Later， following a RUN command， the program is given control of the Accessing data presents a similar A single diskette can hold data for several different For a given application， one and only one set of data will do， and finding the right data is much like finding the right There are differences between accessing programs and accessing data， When a program is need， all its instructions must be loaded into Data， on the other hand， are typically processed selectively， a few elements at Thus， it is not enough merely to locate the data; we must be able to distinguish the individual data elements， 1 Data Structures The key to retrieving data is remembering where they are stored， If the data elements are stored according to a consistent and well understood structure， it is possible to retrieve by remembering that The simplest data structure is a For example， data for a program that computes an average might be stored as a series of numbers separated by commas (F1) The commas distinguish the individual data Most programming languages support amore complex data structure called an array (Fig 2) Each array element can hold one data Each element is assigned a unique identifying number or numbers， and individual data elements can be inserted， extracted， or manipulated by referencing those For example， in the array pictured in F 2 elements are identified by a row number and a column number， and row 1， column3 (element1，3) contains the value Once an array has been filled， it can be written to disk， tape， or any other secondary medium， and back into memory for Consider a program that generates name and address For each label， we need a name， a street address， a city， a state， and a zip If we needed only a few labels， we might store the data in a list， but separating the elements would soon become An option is to set up an array of names and addresses， with each row holding the data for a single The only problem is that the entire array must be in main memory before the individual elements can be accessed， and main memory space is Thus， even with an array， we could generate relatively few F 1 The simplest data structure is a Separators， such as these commas， serve to distinguish individual Often， a “sentinel” value， such as a negative number， marks the end of the 4410， 843， 184， 31， 905， 6357， 44， 7702， 228， 59， -1 F 2 Most programming languages support a more complex data structure called an array Individual cells are assigned a number or numbers， and data values are inserted manipulated， and extracted by referencing those A better solution is to organize the data as a file (F3) All computer data begin as patterns of bits， On a file， the bits are grouped to form Groups of characters， in turn， form meaningful data elements called A group of related fields is a record the file is a set of related For example， in a name and address file， an individual’s name is a Each record holds a complete set of data for data for a single individual ( a name， a street address， and so on) he file consists of all the Fig 3 Characters are grouped to form Fields are prouped to form A file is a group of related The data in a file are processed record by Normally， the file is stored on a secondary medium such as Programs are written to read a process its fields， generate the appropriate output， and then read and process another Because only one record is in main memory at a time， very little memory is Because many records can be stored on a single disk， a great deal of data can be processed in this limited 2 Locating Files Imagine a file stored on The first step in accessing its data is finding the The task is much like finding a program， but there are Following a command such as LOAD or RUN， programs are loaded by the application Data， on the other hand， are processed by application programs， in the context of a program’s Typically， just before the data are required， the program asks the operating system to open the Each file has a name; the open logic ( 4 ) reads the index， searches it by name， and finds the address of the first record in the F4 when a file is opened， the disk index is read into main memory and searched for the desired file’s If the file name is found， the file’s start address is extracted from the 3 Locating Records Once a file has located， the process of accessing its records can When a program needs input data， it reads a record; when it is ready to output results， it writes a Note that these instructions deal with selected records， not with the entire We open We read and write Let’s examine the data accessing process more A programmer views data logically， requesting the next record， or the name and address for a particular The data are stored on a secondary medium such as To access a record physically， the disk drive must be give a set of primitive commands: seeks， reads， and The programmer thinks in terms of logical I/O The external device stores and retrieves physical sectors; it “thinks” in terms of physical I/O There must be a mechanism for translating the programmer’s logical requests to the appropriate physical commands (Fig 5) On small computers， much of the logic is found in the operating system’s input/output control system; on larger machines， access methods are Increasingly， the programmer’s logical data request is translated to physical form by a database management 4 The Relative Record Concept How does software， be it operating system， access method， or database software， find specific records in a file? [2] The key to many storage and retrieval techniques is the relative record Imagine a string of 100 Numbers indicate a given record’s position relative to the first record in the The file’s first record ( relative record 0 ) is at “ start of file plus 0 ”;Its second record is at “ start of file plus 1”， and so Access Methods Imagine preparing meeting announcements for a You need a set of mailing labels， and each member’s name and address is recorded on an index Probably the easiest way to generate the labels is to copy the data from the first card， turn to the second card and copy it， and so on， processing the records sequentially， form the beginning of the file to the Magazine publishers face the same problem with each new issue， but need mailing labels for tens of thousands of Rather than using index cards， they store customer data on disk or magnetic tape， one record per The easiest way to ensure that all labels are generated is to process the records in the order in which they are stored， proceeding sequentially from the fist record in the file to the To simplify handing， the records might be presorted by zip code or a mailing zone， but the basic idea of processing the data in physical order still How dos this relate to the relative record number concept? A relative record number indicates a record’s position on the With sequential access， processing begins with relative record 0， then moves to relative record 1， 2， and son Accessing data sequentially involves little more than For example， imagine a program has just finished processing relative record What is the next record? Obviously， relative record We’ve already seen how a relative record number can be converted to read them， or write them， in physical Processing records in sequence is not always For example， when a subscriber moves， his or her address must be changed in the fire searching for that subscriber’s record sequentially is like looking for a telephone number by starting with the first page of the telephone book and reading line and That’s no how we use a telephone Instead， knowing the record are stored in alphabetical order ，we quickly narrow our search to a portion of a single page and then begin reading the entries， ignoring the bulk of the data the way we use a telephone book is good example of direct， or random， A disk drive reads or writes one record at a To randomly access a specific record， all the programmer must do is remember its address， and ask for it the problem is remembering all those disk addresses， One solution is maintaining an index of the Again， we’ll use the name and address fire as an We want to access individual customer record by As the file is created， records are written one at a time， in relative record number Additionally， as each record is written， the customer name and the associated relative record number are recorded in an array or After the last record has been written to disk and its position recorded on the index， the index is itself Once the index has been created， it can be used to find individual Assume， for example， that Susan Smith has changed her To record her now address on the file， a program read the file index， search the index for her name， find her relative record number， compute the disk address， and read her record， change her address， rewrite the record to the same place on Note that this specific record is accessed directly， and that no other records in the file are The basic idea of direct access is assigning each record an easy to remember， logical， and then converting that key to a relative record number， Given this relative location， a physical address can be computed， and record Using an index is one technique for converting keys to physical An option is passing a numeric key to an algorithm and computing a relative record Both techniques have the same objective; converting a programmer’s logical data requests to physical Earlier in the chapter we identified the gap separating logical and physical I/O An access method is a software module that bridges this gap， converting logical keys to physical addresses， and issuing the appropriate primitive There are many variations of sequential， indexed， and direct organizations， and each one has its own access Using a variety of data access techniques can be confusing， and this is one reason for the growing popularity of database management systems4 Database Management There are problems with traditional data Many result from viewing applications For example， consider Most organizations prepare their payrolls by computer because using a machine instead of a small army of clerks saves Thus， the firm develops a payroll program to process a payroll file， Inventory， accounts receivable， accounts payable， and general ledger analysis are similar applications， so the firm develops an inventory program， and inventory file， an accounts receivable program， an accounts receivable file， and so Each program is independent， and each processes it own independent data Why is this a problem? For on thing， different application often need the same data For example， schools generate both bills and student grade View the applications The billing program reads a file of billing data， and the grade report program reads an independent file of grade The outputs of both program are mailed to each student’s home; thus， student names and addresses must be redundantly recorded on both What happens when a student moves? Unless both file are up data， one will be Redundant data are difficult to A more subtle problem is data Each access method has its own rules for storing and retrieving data， and certain “tricks of the trade” can significantly improve the efficiency of a given Bacause the motivation for using the computer is saving The programmer is often tempted to save even more by taking advantage of these Thus， the program’s logic becomes dependent upon the physical structure of the When a program’s logic is tied to its physical data structure， changing that structure will almost certainly require changing the As a result， programs using traditional access method can difficult to The solution to both problems is often organizing the data as a single， integrated The task of controlling access to all the data can then be concentrated in a centralized database management How dose the use of a centralized database solve the data redundancy problem? All data are collected and stored in a single place; consequently， there is one and only one of any given data When the value of an element ( an address， for example) changes， the single database copy is corrected， Any program requiring access to this data element gets the same value， because there is only on How dose a database help to solve the data dependency problem? Since the responsibility for accessing the physical data rests with the database management system， the programmer can ignore the physical data As a result， programs tend to be much less dependent upon their data， and generally much easier to Expect the trend toward database management to There are problems with traditional data Because different applications often require the same data， certain data elements may be stored in several different places， and such redundant data are difficult to Another problem is data If a program’s logic is too closely linked to the physical structure of its data， that program can be difficult to The solution to both problems is often collecting all the organization’s data in a centralized With a database， there is only one copy of each data element， so the data redundancy problem is Because every program must access data through a database management system， programs are insulated from the physical data structure; thus， data dependency is

论文不会写，最关键的是要把心态放正，一步步来，多看点范文，看看别人怎么写的，实在不会可以找别人代写，我以前也一样，最后找的NTA 。NTA这个站做的，质量还可以，顺利通过了，希望对你有帮助

看见这种问题就烦现在大学生都怎么了。我是中专毕业的。我的毕业设计我自己做了半年。我感觉真的受益匪浅。劝你也放弃拿来主义吧。多掌握点东西绝对没有坏处。

网络信息安全与国家安全论文范文英文版

你在百度搜索不到吧你到谷歌里去搜索Network Security（网络安全）的文章一艘一堆翻译嘛用翻译软件几分钟搞定

需要的话我们团队也可以的原创按照要求定制包修改包过直到通过为止

网络安全和国家安全论文范文英文版

你在百度搜索不到吧你到谷歌里去搜索Network Security（网络安全）的文章一艘一堆翻译嘛用翻译软件几分钟搞定

With the development of computer technology and network technology， network security issues， today has become one of the most attention to the problem of the network world Many factors， which endanger the safety of the network， they mainly attached to the various malware， including viruses and trojans is most general Internet users are familiar According to these harmful factors， network security technology rapid development， it also greatly improved the security of the Aiming at network security situation now， on the company's network information security are analyzed and put forward the improvement Keywords: physical security， intrusion detection， firewall， switch， router

可以直接google里面打中文自动翻译如果你连这3000千字都不想打你连这4年父母辛苦给你的学费都是糟蹋

网络安全与国家安全论文范文

安全在我身边安全对于每个人来说，都很重要，它直接与人的生命相关联。大到国际，小到个人，安全与危险就像隐行人又像空气，无处不在。危险好似死亡使者的魔掌，他会夺去我们宝贵的生命，而安全恰好是这只魔掌够不到的地方。没有人喜欢死，生命对于每一个人来说都是宝贵的，只有一次，不容有任何的疏忽和悔过。细心人很容易就会发现，世界上有许多魔掌够不到的地方，隐约中我们会感到安全其实离我们并不远，相反，安全就在我们身边。就拿放暑假的前一天来说吧。清晨在闹钟的不依不饶下，我睁开了睡意朦胧的双眼。就在我背上书包的一刹那，母亲的唠叨又开始奏起了“交响乐”。路上要小心，别骑的太快，看好了再过马路，别闯红灯。车多的时候，多等一会，跟着大家一起过……“妈呀！”我尖叫着跑进了电梯。路上清风吹来，让我清醒了不少。细看这平日要走几遍的马路，突然发现地上的分道线格外清晰，看来昨夜一定重新喷过漆了。看到这些，才引起了我对这条老路的特别关注。我这才发现，路上每一个路口都安了红绿灯，路中间的警亭很早就站上了忙碌的警察叔叔，这下想闯红灯可难了。一座又一座的过街天桥，被装饰的眼花缭乱，尽现北京人的热情。便道边种上了一棵棵绿葱葱的小树，盲道格外显眼。一路上，不难看到提示牌、广告栏上清楚地写着禁止翻越隔离栏、禁止乱停车、请走人行横道、请走过街天桥、请遵守交通法规等等。平时我没注意观察，看来这条路的变化还真大。来到学校，一想到要放长长的暑假，心里就不觉得快乐和轻松。这时，学校的广播响了起来：“请同学们坐好，现在我们要珍对暑期安全开个会。”唉，每年学校放假前都是这样的，对于我们这些已有九年学习经历的人来说，已是司空见惯了。“请同学们注意：假期不要去网吧、不要随意外出、不要到酒吧、歌厅等成年人娱乐场所，不要到没有安全措施的地方游泳，不要……要注意饮食卫生，要合理地安排好作息时间，要……”带着这一脑袋的要与不要，我们总算迎来了暑假…… 我想只用这一天，就足以证明安全在我们身边了。不管是从父母的叮嘱中，路边的广告上，还是广播、电视里的宣传，我们都看到了安全的提示。可每一年中，还有很多人死于车祸等意外事故，这怎么解释呢？我认为危险是可以避免的，关键在于你是否意识到。关于安全的提示，我们随处可见，如果你意识到了，你会继续快乐的生活；如果你开始没意识到，后来意识到了，那就相当于你被死亡使者发现了，但他够不到你；如果你始终对这些安全提示毫不在意，那么下一个被抓住的生命就是你的。揉亮我们的眼睛，看清善与恶；转动我们的大脑，分清是与非；记住：安全就在我们身边！仅供参考，希望能够帮到你。

摘要：文中就信息网络安全内涵发生的根本变化，阐述我国发展民族信息安全体系的重要性及建立有中国特色的网络安全体系的必要性。论述了网络防火墙安全技术的分类及其主要技术特征。关键词：网络安全防火墙技术特征概述 21世纪全世界的计算机都将通过Internet联到一起，信息安全的内涵也就发生了根本的变化。它不仅从一般性的防卫变成了一种非常普通的防范，而且还从一种专门的领域变成了无处不在。当人类步入21世纪这一信息社会、网络社会的时候，我国将建立起一套完整的网络安全体系，特别是从政策上和法律上建立起有中国自己特色的网络安全体系。一个国家的信息安全体系实际上包括国家的法规和政策，以及技术与市场的发展平台。我国在构建信息防卫系统时，应着力发展自己独特的安全产品，我国要想真正解决网络安全问题，最终的办法就是通过发展民族的安全产业，带动我国网络安全技术的整体提高。网络安全产品有以下几大特点：第一，网络安全来源于安全策略与技术的多样化，如果采用一种统一的技术和策略也就不安全了；第二，网络的安全机制与技术要不断地变化；第三，随着网络在社会个方面的延伸，进入网络的手段也越来越多，因此，网络安全技术是一个十分复杂的系统工程。为此建立有中国特色的网络安全体系，需要国家政策和法规的支持及集团联合研究开发。安全与反安全就像矛盾的两个方面，总是不断地向上攀升，所以安全产业将来也是一个随着新技术发展而不断发展的产业。信息安全是国家发展所面临的一个重要问题。对于这个问题，我们还没有从系统的规划上去考虑它，从技术上、产业上、政策上来发展它。政府不仅应该看见信息安全的发展是我国高科技产业的一部分，而且应该看到，发展安全产业的政策是信息安全保障系统的一个重要组成部分，甚至应该看到它对我国未来电子化、信息化的发展将起到非常重要的作用。防火墙网络防火墙技术是一种用来加强网络之间访问控制，防止外部网络用户以非法手段通过外部网络进入内部网络，访问内部网络资源，保护内部网络操作环境的特殊网络互联设备。它对两个或多个网络之间传输的数据包如链接方式按照一定的安全策略来实施检查，以决定网络之间的通信是否被允许，并监视网络运行状态。� 目前的防火墙产品主要有堡垒主机、包过滤路由器、应用层网关(代理服务器)以及电路层网关、屏蔽主机防火墙、双宿主机等类型。� 虽然防火墙是目前保护网络免遭黑客袭击的有效手段，但也有明显不足：无法防范通过防火墙以外的其它途径的攻击，不能防止来自内部变节者和不经心的用户们带来的威胁，也不能完全防止传送已感染病毒的软件或文件，以及无法防范数据驱动型的攻击。自从1986年美国Digital公司在Internet上安装了全球第一个商用防火墙系统，提出了防火墙概念后，防火墙技术得到了飞速的发展。国内外已有数十家公司推出了功能各不相同的防火墙产品系列。防火墙处于5层网络安全体系中的最底层，属于网络层安全技术范畴。在这一层上，企业对安全系统提出的问题是:所有的IP是否都能访问到企业的内部网络系统?如果答案是“是”，则说明企业内部网还没有在网络层采取相应的防范措施。作为内部网络与外部公共网络之间的第一道屏障，防火墙是最先受到人们重视的网络安全产品之一。虽然从理论上看，防火墙处于网络安全的最底层，负责网络间的安全认证与传输，但随着网络安全技术的整体发展和网络应用的不断变化，现代防火墙技术已经逐步走向网络层之外的其他安全层次，不仅要完成传统防火墙的过滤任务，同时还能为各种网络应用提供相应的安全服务。另外还有多种防火墙产品正朝着数据安全与用户认证、防止病毒与黑客侵入等方向发展。根据防火墙所采用的技术不同，我们可以将它分为四种基本类型:包过滤型、网络地址转换—NAT、代理型和监测型。包过滤型包过滤型产品是防火墙的初级产品，其技术依据是网络中的分包传输技术。网络上的数据都是以“包”为单位进行传输的，数据被分割成为一定大小的数据包，每一个数据包中都会包含一些特定信息，如数据的源地址、目标地址、TCP/UDP源端口和目标端口等。防火墙通过读取数据包中的地址信息来判断这些“包”是否来自可信任的安全站点，一旦发现来自危险站点的数据包，防火墙便会将这些数据拒之门外。系统管理员也可以根据实际情况灵活制订判断规则。包过滤技术的优点是简单实用，实现成本较低，在应用环境比较简单的情况下，能够以较小的代价在一定程度上保证系统的安全。但包过滤技术的缺陷也是明显的。包过滤技术是一种完全基于网络层的安全技术，只能根据数据包的来源、目标和端口等网络信息进行判断，无法识别基于应用层的恶意侵入，如恶意的Java小程序以及电子邮件中附带的病毒。有经验的黑客很容易伪造IP地址，骗过包过滤型防火墙。网络地址转化—NAT 网络地址转换是一种用于把IP地址转换成临时的、外部的、注册的IP地址标准。它允许具有私有IP地址的内部网络访问因特网。它还意味着用户不许要为其网络中每一台机器取得注册的IP地址。 NAT的工作过程如图1所示：在内部网络通过安全网卡访问外部网络时，将产生一个映射记录。系统将外出的源地址和源端口映射为一个伪装的地址和端口，让这个伪装的地址和端口通过非安全网卡与外部网络连接，这样对外就隐藏了真实的内部网络地址。在外部网络通过非安全网卡访问内部网络时，它并不知道内部网络的连接情况，而只是通过一个开放的IP地址和端口来请求访问。OLM防火墙根据预先定义好的映射规则来判断这个访问是否安全。当符合规则时，防火墙认为访问是安全的，可以接受访问请求，也可以将连接请求映射到不同的内部计算机中。当不符合规则时，防火墙认为该访问是不安全的，不能被接受，防火墙将屏蔽外部的连接请求。网络地址转换的过程对于用户来说是透明的，不需要用户进行设置，用户只要进行常规操作即可。代理型代理型防火墙也可以被称为代理服务器，它的安全性要高于包过滤型产品，并已经开始向应用层发展。代理服务器位于客户机与服务器之间，完全阻挡了二者间的数据交流。从客户机来看，代理服务器相当于一台真正的服务器;而从服务器来看，代理服务器又是一台真正的客户机。当客户机需要使用服务器上的数据时，首先将数据请求发给代理服务器，代理服务器再根据这一请求向服务器索取数据，然后再由代理服务器将数据传输给客户机。由于外部系统与内部服务器之间没有直接的数据通道，外部的恶意侵害也就很难伤害到企业内部网络系统。代理型防火墙的优点是安全性较高，可以针对应用层进行侦测和扫描，对付基于应用层的侵入和病毒都十分有效。其缺点是对系统的整体性能有较大的影响，而且代理服务器必须针对客户机可能产生的所有应用类型逐一进行设置，大大增加了系统管理的复杂性。监测型监测型防火墙是新一代的产品，这一技术实际已经超越了最初的防火墙定义。监测型防火墙能够对各层的数据进行主动的、实时的监测，在对这些数据加以分析的基础上，监测型防火墙能够有效地判断出各层中的非法侵入。同时，这种检测型防火墙产品一般还带有分布式探测器，这些探测器安置在各种应用服务器和其他网络的节点之中，不仅能够检测来自网络外部的攻击，同时对来自内部的恶意破坏也有极强的防范作用。据权威机构统计，在针对网络系统的攻击中，有相当比例的攻击来自网络内部。因此，监测型防火墙不仅超越了传统防火墙的定义，而且在安全性上也超越了前两代产品虽然监测型防火墙安全性上已超越了包过滤型和代理服务器型防火墙，但由于监测型防火墙技术的实现成本较高，也不易管理，所以目前在实用中的防火墙产品仍然以第二代代理型产品为主，但在某些方面也已经开始使用监测型防火墙。基于对系统成本与安全技术成本的综合考虑，用户可以选择性地使用某些监测型技术。这样既能够保证网络系统的安全性需求，同时也能有效地控制安全系统的总拥有成本。实际上，作为当前防火墙产品的主流趋势，大多数代理服务器(也称应用网关)也集成了包过滤技术，这两种技术的混合应用显然比单独使用具有更大的优势。由于这种产品是基于应用的，应用网关能提供对协议的过滤。例如，它可以过滤掉FTP连接中的PUT命令，而且通过代理应用，应用网关能够有效地避免内部网络的信息外泄。正是由于应用网关的这些特点，使得应用过程中的矛盾主要集中在对多种网络应用协议的有效支持和对网络整体性能的影响上。

回答您好，您的问题已看到，正在为您解答，请稍等。我是百度特邀答主，擅长解答有关教育领域的各种问题很高兴为您服务 现在是资讯科技的时代，但是网络中还是隐藏着无限的危机，因此“网络安全”已经变成每个人都应该重视的事情了。像为了确保个人资料不外漏，我们应该做好安全措施，才不会使个人资料、照片…等重要资料让别人知道，虽然网际网络带给我们很大的便利，但是也有许多人使用木马、病毒…等各式各样的诈骗以及威胁资讯安全的方法盗取别人的重要资料，所以为了保障个人的重要资产，我门应做以下措施，以确保资料安全：1、电脑不用时要注销2、个人资料应备份3、浏览网络要小心4、电子邮件要过滤5、不明网站不乱开6、软体使用要版权，如果做好以上措施，就可以让重要资料多一份保障哦！还有许多人会使用网络进行资料查询、交作业、工作或聊天…等事情，但是这些人不见得是使用正确得方法去使用电脑，也有一些人很会用电脑玩游戏和写报告，可是，如果没有适当的使用电脑，就很有可能造成反效果哦！还有还有，现在不论文字、影音、图片…等都可以在网络上快速传送，是知识财产权更容易受到侵犯，知识财产权的范围非常广，包括：图片、音乐、影音软体…等等，因此在引用时，应取的作者的授权哦！为了安全起见，上网一定要小心，浏览页面时也要谨慎，如过做到以上叙述的事项，就可以保障自己的权利，也不会触犯到法律网络已经融入到我们生活之中，是我们信息交流不可缺少的工具，给现代的文化科技做出了很重要的贡献。我们这一代人必须要懂电脑，会电脑。但是它也不是那么“忠诚”，会给我们带来很大的危害，我们只有用的好，用得妙，才能达到理想的效果。首先，危害最大的就是游戏，在虚拟的游戏中，会因为游戏的好玩和自如而沉迷，无法自拔。从而对网络产生依赖。而且在网上任何人都模糊不清，任何错误无需承担，便随心所欲为所欲为。如果带到现实生活中那后果会不堪设想。而且上网时会遇到各种对我们不好的信息，会让我们在无意中受到伤害。长时间的玩电脑会对我们的身体造成不良影响。而且整天沉溺于网络，对学习产生了很大的影响，从而荒废了学生业。我们怎样才能从网络中找回自己呢？最重要的是家长，因为家长在孩子的身边的时候最多，家长应该多多正确的引导和监督，遇到问题与孩子多谈心好好沟通，其次，学校也应该多开展一些健康上网的活动，不仅娱乐而且还可以增长知识。我们也可以多参加一些有趣的活动，多读一些书。上网有利有弊，好好运用利大于弊，假如迷恋网络，便弊大于利，利弊就在一念之间，我们要好好的利用网络，让他成为我们的好助手，好朋友。而不是沉迷的工具。这个是两个范文您可以看一下希望对您有所帮助更多2条 

安全伴我行安全，牵系着每一个人的生活。每当我走在上学、放学的路上，看到“车水马龙”，“人山人海”的热闹景象，看到身边飞驰而过的车辆，心里就会产生恐惧感。眼前浮现的一幕幕车毁人亡的画面，让我感到害怕。每当想到这里，我就十分紧张，真害怕第二天遇到车祸的就是我。大家可能看到过这样一个报道：2005年11月14日，是个阳光明媚的日子。山西沁源县第二中学的几百名师生正在马路边跑操，突然间，一辆大货车象一个发疯的恶魔碾向跑操的队伍，随着一片片惊呼和惨叫，21个鲜花般的生命永远的离开了这美好的世界。许多家长听到噩耗传来，一路上呼唤着孩子的名字，奔向现场，可是，任凭大人们怎样撕心裂肺地呼喊，他们永远也不能回应。这血的教训，给多少家庭带来痛苦，把多少幸福的家庭拆散。我国是一个人口大国，人多车多，使道路显得更加拥挤。据统计，我国每年因车祸死亡人数超过10万人，其中，儿童死亡人数近2万人，居世界之首。平均每5分钟就有1人死于车祸，而不到半小时就有一个孩子葬身车轮，这是多么惊人的数字。在这触目惊心的数字背后，有多少个家庭失去欢乐，多少个亲人痛不欲生，多少个生命之花永远凋零。想到这些，我抑制不住内心的激动，为遇难者留下同情的泪水，对肇事者产生无比的愤慨！然而，这些事故的发生，绝大多数都是因为人们的交通安全意识淡薄，不遵守交通法规造成的。作为一名合格的中学生，我们理应积极行动起来，从我做起，从身边做起。因此，我倡议：①全体同学要认真遵守《中学生守则》、《中学生日常行为规范》和交通法规。②校内文明守纪，楼道内轻声轻步，绝不打闹，不做危险的游戏。③校外一定要注意交通安全，走路要走人行道，过马路要走斑马线，不要翻越护栏。十字路口一定要看清红绿灯。④马路上行走时要集中精力，不看书、不听音乐、不打闹。“红灯短暂，生命无限”、“不怕百步远，只怕一步险”。其实，前人发明红绿灯是有原因的，不要怕麻烦，有句话说的好“红灯无数次，生命只一次”，红灯会闪烁无数次的，而生命只有一次，用完了就没有下一次了，在红灯没有灭的时候，我们绝对不可以冒险过马路，哪怕两边没有车，也绝对不能穿过马路。因此，同学们千万不要在马路上打闹，这样太危险。还有的惨剧是行人翻越护栏造成的，大家要不怕麻烦绕过护栏。为了我们的生命之花永远绽放，为了让所有的家庭幸福美满，亲爱的同学们，让安全永远伴随你我他吧！

网络信息安全与国家安全论文范文英文版初中

Recently，the news that US attack on China's Internet is always And the question of how to stay online safely raises a lot of discussion in our As a result，in the era of rapid development of network，we must take measures to protect our security of privacy and property 最近的新闻都揭示了美国对中国网络的攻击如何安全地上网在我国引起了大量的讨论结果是在网络飞速发展的时代，我们必须要采取有效的措施来保护我们的隐私和财产安全From my perspective，in the first place，we should call attention to our personal Not only do we not offer them at random in some strange websites，but we need to distinguish right from wrong among the numerous Furthermore，it is inevitable that some secure anti-virus soft wares can be And it will make it possible for that network can run more In addition to doing some work by ourselves，the government needs to draw up some policies to preserve national cyber It involves probing for deeply rooted reasons，devising creative solutions，developing high-tech talents and strengthening the 从我的角度来看，首先，我们应该关注我们的个人信息我们不仅不随随便便在一些奇怪的网站提供自己的信息，而且我们需要在众多的网站之间明辨是非此外，安装一些安全的杀毒软件是必须的这使得网络运行更加稳定除了我们自己该做一些努力之外，还需要政府制定相关政策来保护国家网络安全这就涉及到探究深层次的原因，想出有创造性的解决方案，发展高新技术人才、加强监管Although scientists still cannot overcome the problem completely，they are studying a great deal about how to protect our national cyber However，consciousness of cyber security should not Only in this way，we just enjoy the convenience brought by the 尽管科学家仍无法完全克服这个问题，但是他们正在研究大量关于如何保护我们国家网络安全的办法然而，不应该放松网络安全意识只有这样我们才能享受到网络带给我们的便利