ERROR

Нам шкода - хоча ми зробили все можливе: сталася помилка
Typedatabase
MessageYou have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near "AND SUBSTRING(categories_id,4,1) != "0") AS cat4, (SELECT categorie..." at line 5
QuerySELECT (SELECT categories_id FROM categories_description WHERE language_id = 10 AND categories_id = 000) AS cat1, (SELECT categories_id FROM categories_description WHERE language_id = 10 AND categories_id = 00 AND SUBSTRING(categories_id,2,1) != "0") AS cat2, (SELECT categories_id FROM categories_description WHERE language_id = 10 AND categories_id = 0 AND SUBSTRING(categories_id,3,1) != "0") AS cat3, (SELECT categories_id FROM categories_description WHERE language_id = 10 AND categories_id = AND SUBSTRING(categories_id,4,1) != "0") AS cat4, (SELECT categories_name FROM categories_description WHERE language_id = 10 AND categories_id = 000) AS cat1name, (SELECT categories_name FROM categories_description WHERE language_id = 10 AND categories_id = 00 AND SUBSTRING(categories_id,2,1) != "0") AS cat2name, (SELECT categories_name FROM categories_description WHERE language_id = 10 AND categories_id = 0 AND SUBSTRING(categories_id,3,1) != "0") AS cat3name, (SELECT categories_name FROM categories_description WHERE language_id = 10 AND categories_id = AND SUBSTRING(categories_id,4,1) != "0") AS cat4name, (SELECT url_text FROM commerce_seo_url_without_language WHERE categories_id = 000) AS cat1url, (SELECT url_text FROM commerce_seo_url_without_language WHERE categories_id = 00 AND SUBSTRING(categories_id,2,1) != "0") AS cat2url, (SELECT url_text FROM commerce_seo_url_without_language WHERE categories_id = 0 AND SUBSTRING(categories_id,3,1) != "0") AS cat3url, (SELECT url_text FROM commerce_seo_url_without_language WHERE categories_id = AND SUBSTRING(categories_id,4,1) != "0") AS cat4url, (SELECT wod_count_products FROM categories WHERE categories_id = 000) AS cat1cnt, (SELECT wod_count_products FROM categories WHERE categories_id = 00 AND SUBSTRING(categories_id,2,1) != "0") AS cat2cnt, (SELECT wod_count_products FROM categories WHERE categories_id = 0 AND SUBSTRING(categories_id,3,1) != "0") AS cat3cnt, (SELECT wod_count_products FROM categories WHERE categories_id = AND SUBSTRING(categories_id,4,1) != "0") AS cat4cnt

Ekram Hossain & Kin K. Leung 
Wireless Mesh Networks [PDF ebook] 
Architectures and Protocols

поддержка

A Brief Journey through “Wireless Mesh Networks: Architectures and Protocols” Ekram Hossain, University of Manitoba, Winnipeg, Canada Kin Leung, Imperial College, London, United Kingdom Introduction Wireless mesh networking has emerged as a promising design paradigm for next gen eration wireless networks. Wireless mesh networks (WMNs) consist of mesh clients and mesh routers, where the mesh routers form a wireless infrastructure/backbone and interwork with the wired networks to provide multihop wireless Internet con nectivity to the mesh clients. Wireless mesh networking has emerged as one of the most promising concept for self organizing and auto con?gurable wireless network ing to provide adaptive and ?exible wireless Internet connectivity to mobile users. This concept can be used for different wireless access technologies such as IEEE 802. 11, 802. 15, 802. 16 based wireless local area network (WLAN), wireless per sonal area network (WPAN), and wireless metropolitan area network (WMAN) tech nologies, respectively. Potential application scenarios for wireless mesh networks in clude backhaul support for cellular networks, home networks, enterprise networks, community networks, and intelligent transport system networks. Development of wireless mesh networking technology has to deal with challenging architecture and protocol design issues, and there is an increasing interest on this technology among the researchers in both academia and industry. There are many on going research projects in different universities and industrial research labs. Also, many startup com panies are building mesh networking platforms based on off the shelf wireless access technologies and developing demanding applications and services.

€149.79
Способы оплаты

Содержание

Challenges and Issues in Designing Architectures and Protocols for Wireless Mesh Networks.- Architectures and Deployment Strategies for Wireless Mesh Networks.- End-to-End Design Principles for Broadband Cellular Mesh Networks.- Medium Access Control and Routing Protocols for Wireless Mesh Networks.- Channel Assignment Strategies for Wireless Mesh Networks.- Optimal Resource Allocation for Wireless Mesh Networks.- Resource Allocation and Cost in Hybrid Solar/Wind Powered WLAN Mesh Nodes.- Scheduling, Routing, and Related Cross-Layer Management through Link Activation Procedures in Wireless Mesh Networks.- Quality-Aware Routing Metrics in Wireless Mesh Networks.- Cross-layer Solutions for Traffic Forwarding in Mesh Networks.- Multiple Antenna Techniques for Wireless Mesh Networks.- Security Issues in Wireless Mesh Networks.

Купите эту электронную книгу и получите еще одну БЕСПЛАТНО!
язык английский ● Формат PDF ● страницы 333 ● ISBN 9780387688398 ● Размер файла 6.0 MB ● редактор Ekram Hossain & Kin K. Leung ● издатель Springer US ● город NY ● Страна US ● опубликованный 2007 ● Загружаемые 24 месяцы ● валюта EUR ● Код товара 2145427 ● Защита от копирования Социальный DRM

Больше книг от того же автора (ов) / редактор

19 094 Электронные книги в этой категории