There is a great amount of information on the web that can not be accessed by conventional crawler engines. This portion of the web is usually called hidden web data. To be able to deal with this problem, it is necessary to solve two tasks: crawling the client-side and crawling the server-side hidden web. In this paper we present an architecture and a set of related techniques for accessing the...

A web crawling system using a distributed architecture needs to coordinate the whole system when the nodes in the system change. This paper presents an efficiently dynamic reconfigurability model that can be used in such a system. Through analyzing the model, we got methods to achieve the optimized performance in the distributed web crawling system, i.e., retain load balance and produce low net...

In this work we present a soft crawler fabricated using magneto-active elastomer. The is controlled by an external magnetic field to produce two locomotion patterns: peristaltic and caterpillar crawling. Due its structural simplicity, low mass, wirelessly actuation compliant body the design of has potential address key challenges faced existing crawling robots. Experimental data were gathered e...

In this article, a four-cell CPG network, exploiting sensory feedback, is proposed in order to emulate infant crawling gaits when utilized on the NAO robot. Based on the crawling model, the positive episodic natural-actor-critic architecture is applied to learn a proper posture of crawling on a simulated NAO. By transferring the learned results to the physical NAO, the transferability from simu...

Web applications have come a long way, both in terms of adoption to provide information and services, and in terms of the technologies to develop them. With the emergence of richer and more advanced technologies such as AJAX, web applications have become more interactive, responsive and user friendly. These applications, often called Rich Internet Applications (RIAs), changed the web applicatio...

The web is a huge and highly dynamic environment which is growing exponentially in content and developing fast in structure. No search engine can cover the whole web, thus it has to focus on the most valuable pages for crawling. So an efficient crawling algorithm for retrieving the most important pages remains a challenging issue. Several algorithms like PageRank and OPIC have been proposed. Un...

Due to the tremendous increase rate and the high change frequency of Web documents, maintaining an up-to-date index for searching purposes (search engines) is becoming a challenge. The traditional crawling methods are no longer able to catch up with the constantly updating and growing Web. Realizing the problem, in this paper we suggest an alternative distributed crawling method with the use of...

This research examined developmental continuity between "cruising" (moving sideways holding onto furniture for support) and walking. Because cruising and walking involve locomotion in an upright posture, researchers have assumed that cruising is functionally related to walking. Study 1 showed that most infants crawl and cruise concurrently prior to walking, amassing several weeks of experience ...