Distributing the crawling activity among multiple machines can distribute processing to reduce the analysis of web page. This paper presents the design of a distributed web crawler based on Peer-to-Peer network. The distributed crawler harnesses the excess bandwidth and computing resources of nodes in system to crawl the web. Each crawler is deployed in a computing node of P2P to analyze web pa...

The introduction of a crawler in mid 90s opened the floodgates for research in various application domains. Many attempts to create an ideal crawler failed due to the explosive nature of the web. In this paper, we describe the building blocks of PeerCrawl a Peer-to-Peer web crawler. This crawler can be used for generic crawling, is easily scalable and can be implemented on a grid of day-to-day ...

Web crawler is program used to download documents from the web site. This paper presents the design of a distributed web crawler on grid platform. This distributed web crawler is based on our previous work Igloo. Each crawler is deployed as grid service to improve the scalability of the system. Information services in our system are in charge of distributing URLs to balance the loads of the cra...

In this paper, a novel crawler mechanism for a sideling motion is presented. The crawler mechanism has a circular section and has active rolling axes at the center of the circles. Conventional crawler mechanism can convey heavy weigh, however they can not move to side. And previous crawler unit sinks into the soft ground when it whole body is inclined during moving. The proposed design solves t...

Electric cable shovel excavator is widely used in the surface mining operations of oil sand and other highly abrasive formations. The oil sands mines in Alberta use P&H 4100 C Boss shovel [1,2] for their loading operations. The lower works of this shovel consist of propel and crawler systems [3-7]. The crawler system consists of a crawler track assembly, front and rear idlers, lower rollers and...

Electric cable shovel excavator is widely used in the surface mining operations of oil sand and other highly abrasive formations. The oil sands mines in Alberta use P&H 4100 C Boss shovel [1,2] for their loading operations. The lower works of this shovel consist of propel and crawler systems [3-7]. The crawler system consists of a crawler track assembly, front and rear idlers, lower rollers and...

Architectural framework of World Wide Web is used for accessing linked documents spread out over millions of machines all over the Internet. Web is a system that makes exchange of data on the internet easy and efficient. Due to the exponential growth of web, it has become a challenge to traverse all URLs in the web documents and handle these documents, so it is necessary to optimize the paralle...

In this paper, we describe the WIRE (Web Information Retrieval Environment) project and focus on some details of its crawler component. The WIRE crawler is a scalable, highly configurable, high performance, open-source Web crawler which we have used to study the characteristics of large Web collections.

This paper analyzes a web crawler for the Web 2.0 network, which presents new challenges. A comprehensive overview on various programs and strategies is presented, which includes the design and realization of Ajax reptiles. Experimental verification indicates that an Ajax Crawler can effectively obtain Ajax dynamic pages. The proposed Ajax Crawler is then compared with common Ajax reptiles in t...