دانلود پاورپوینت Wireless Sensor Network

اختصاصی از فی لوو دانلود پاورپوینت Wireless Sensor Network دانلود با لینک مستقیم و پر سرعت .

حسگر ها در ساختارها,ماشین آلات و محیط زیست ترکیب می شوند که با,رهایی یا نمایش کارآیی اطلاعات حسگر پیوند خورده و می توانند مزایای فوق العاده ای را برای جامعه فراهم سازد مزایای پتانسیل (نهفته) شامل :نقصهای فاجعه آمیز,حفظ منابع  طبیعی,تقویت نوآوری,تقویت واکنش یا پاسخ فوری و بهبود امنیت سرزمین

مجموعه ها یا دسته های کابل های سربی و رشته های فیبر نوری این پتانسل را دارند تا شکسته شوند وکانکتورهای آن دچار مشکل نشود .دسته های کابل بلند , نصب عمده و هزینه حفظ طولانی مدت را نشان می دهد , که محدود کننده ی تعداد سنسور ا یا حسگر هاست, و بنابراین باعث کاهش کیفی کلیه داده های شما می شود . شبکه های حسگر بیسیم می توانند این هزینه ها سهولت نصب و حذف کانکتورها یا رابط ها را از میان بردارند.

شامل پایگاه یا ایستگاه پایه می باشد wsn یک شبکه سنسور بی سیم
که می تواند با تعدادی از حسگر های بیسیم از طریق پیوند یا ارتباط رادیو,ارتباط برقرار کند.
هدف از این بخش آن است که مقدمه ی فنی مختصری را برای شبکه های حسگر بی سیم
 حسگر بی سیم چند کاربردی در زیر نشان داده شده Node   معماری یکفراهم سازیم و چند کاربرد را نشان دهیم که در آن شبکه های حسگربیسم ,توانمند می شوند.

یک روش یا رویکرد طرح مدل دهی شده یک صحنه یا ایستگاه انعطاف پذیر و برای مثال:بسته به حسگر هایی که به کار رفته است انسداد یا بلوک شرایط سیگنال می تواند.   مجددا رنامه ریزی یا اصلاح شود. چند کاربردی را برای رفع نیازهای طیف وسیعی از کاربردها فراهم می سازد

ریز پردازنده دارای چند عملیات است از جمله:

1-مدیریت مجموعه داده های سنسور×حسگر×

2-اجرای عملیات مدیریت نیرو×قدرت×

3-محل اتصال داده های حسگر برای لایه فیزیکی رادیو ×رابط×

4-مدیریت پروتکل شبکه رادیو

طراحی شبکه های حسگر بی سیم

تعدادی نقشه شناسی یا مکان شناسی های مختلف برای      شبکه های ارتباطات رادیو وجود دارند . بحث مختصری از نقشه شناسی های شبکه که شبکه های حسگر بی سیم را به کار می برد

شامل 20 اسلاید powerpoint

Enterprise risk disruption by considering flexibility in supply network reconfiguration

اختصاصی از فی لوو Enterprise risk disruption by considering flexibility in supply network reconfiguration دانلود با لینک مستقیم و پر سرعت .

20 صفحه pdf

چکیده:
Supply network structure is one of the important issues that affects on enterprise performance.
Real world condition leads the company to design a flexible structure to cope with dynamic
market and conditions. Dynamic conditions and uncertain variables in business are base of
disruption risks in supply network. Various strategies can be applied to risk mitigation and it is
very important to design a flexible supply network with reconfiguration ability based on applied
strategy. Proposed reconfiguration method in this paper considers environment flexibility by
changing based on several suitable strategies. It divides strategies into some main flexibility
strategies which should be considered in supply network and proposes an examination method to
evaluate reconfiguration process. It considers flexibility in delivery and transportation system to
let the company using several strategies in transportation, import custom and delivery routs.
Proposed goal model guarantees profit of reconfigurations and fuzzy set helps to be close to real
condition. A numerical example has been solved to indicate method efficiency.

Network Radar Countermeasure Systems: Integrating Radar and Radar Countermeasures

اختصاصی از فی لوو Network Radar Countermeasure Systems: Integrating Radar and Radar Countermeasures دانلود با لینک مستقیم و پر سرعت .

Author: Qiuxi Jiang

year: 2014

page: 315

Format: pdf

دانلود تحقیق Network security

اختصاصی از فی لوو دانلود تحقیق Network security دانلود با لینک مستقیم و پر سرعت .

Network security
In the field of networking, the specialist area of network security consists of the provisions made in an underlying computer network infrastructure, policies adopted by the network administrator to protect the network and the network-accessible resources from unauthorized  access,and consistent and continuous monitoring and measurement of its effectiveness (or lack) combined together.
The first step to information security
The terms network security and information security are often used interchangeably. Network security is generally taken as providing protection at the boundaries of an organization by keeping out intruders (crackers). Information security, however, explicitly focuses on protecting data resources from malware attack or simple mistakes by people within an organization by use of data loss prevention (DLP) techniques. One of these techniques is to compartmentalize large networks with internal boundaries.
Network security concepts
Network security starts from authenticating the user, commonly with a username and a password. Since this requires just one thing besides the user name, i.e. the password which is something you 'know', this is sometimes termed one factor authentication. With two factor authentication something you 'have' is also used (e.g. a security token or 'dongle', an ATM card, or your mobile phone), or with three factor authentication something you 'are' is also used (e.g. a fingerprint or retinal scan).
Once authenticated, a firewall enforces access policies such as what services are allowed to be accessed by the network users.[2] Though effective to prevent unauthorized access, this component may fail to check potentially harmful content such as computer worms or Trojans being transmitted over the network. Anti-virus software or an intrusion prevention system (IPS)[3] help detect and inhibit the action of such malware. An anomaly-based intrusion detection system may also monitor the network and traffic for unexpected (i.e. suspicious) content or behaviour and other anomalies to protect resources, e.g. from denial of service attacks or an employee accessing files at strange times. Individual events occurring on the network may be logged for audit purposes and for later high level analysis.
Communication between two hosts using the network could be encrypted to maintain privacy.Honeypots, essentially decoy network-accessible resources, could be deployed in a network as surveillance and early-warning tools. Techniques used by the attackers that attempt to compromise these decoy resources are studied during and after an attack to keep an eye on new exploitation techniques. Such analysis could be used to further tighten security of the actual network being protected by the honeypot.
Security management
Security Management for networks is different for all kinds of situations. A small home or an office would only require basic security while large businesses will require high maintenance and advanced software and hardware to prevent malicious attacks from hacking and spamming.
Small homes
* A basic firewall like COMODO Internet Security or a unified threat management system.
* For Windows users, basic Antivirus software like AVG Antivirus, ESET NOD32 Antivirus, Kaspersky, McAfee, Avast!, Zone Alarm Security Suite or Norton AntiVirus. An anti-spyware program such as Windows Defender or Spybot would also be a good idea. There are many other types of antivirus or anti-spyware programs out there to be considered.
* When using a wireless connection, use a robust password. Also try to use the strongest security supported by your wireless devices, such as WPA2 with AES encryption.
* If using Wireless: Change the default SSID network name, also disable SSID Broadcast; as this function is unnecessary for home use. (However, many security experts consider this to be relatively useless.
* Enable MAC Address filtering to keep track of all home network MAC devices connecting to your router.
* Assign STATIC IP addresses to network devices.
* Disable ICMP ping on router.
* Review router or firewall logs to help identify abnormal network connections or traffic to the Internet.
* Use passwords for all accounts.
* Have multiple accounts per family member, using non-administrative accounts for day-to-day activities. Disable the guest account (Control Panel> Administrative Tools> Computer Management> Users).
* Raise awareness about information security to children.

Medium businesses
* A fairly strong firewall or Unified Threat Management System
* Strong Antivirus software and Internet Security Software.
* For authentication, use strong passwords and change it on a bi-weekly/monthly basis.
    * When using a wireless connection, use a robust password.
    * Raise awareness about physical security to employees.
    * Use an optional network analyzer or network monitor.
    * An enlightened administrator or manager.
Large businesses
    * A strong firewall and proxy to keep unwanted people out.
    * A strong Antivirus software package and Internet Security Software package.
    * For authentication, use strong passwords and change it on a weekly/bi-weekly basis.
    * When using a wireless connection, use a robust password.
    * Exercise physical security precautions to employees.
    * Prepare a network analyzer or network monitor and use it when needed.
    * Implement physical security management like closed circuit television for entry areas and restricted zones.
    * Security fencing to mark the company's perimeter.
    * Fire extinguishers for fire-sensitive areas like server rooms and security rooms.
    * Security guards can help to maximize security.
School
    * An adjustable firewall and proxy to allow authorized users access from the outside and inside.
    * Strong Antivirus software and Internet Security Software packages.
    * Wireless connections that lead to firewalls.
    * Children's Internet Protection Act compliance.
    * Supervision of network to guarantee updates and changes based on popular site usage.
    * Constant supervision by teachers, librarians, and administrators to guarantee protection against attacks by both internet and sneakernet sources.

شامل 28 صفحه word

be a network marketer superstar ستاره فروش چند سطحی شوید

اختصاصی از فی لوو be a network marketer superstar ستاره فروش چند سطحی شوید دانلود با لینک مستقیم و پر سرعت .

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