buckle folds are common traps for hydrocarbon in several contractional provinces. buckle folds form where stratified sequences rest a top salt or some other utterly weak rock as a decollemet zone in units with high competency contrasts by a compressive stress which acted along the length of the rock layers. an important parameter affecting buckle folding of a competent zone above a mobile decol...

To enable topical web crawling, link-context is the critical contextual information of anchor text for retrieving domain-specific resources. While some link-contexts may misguide topical web crawling and extract wrong web pages, because several relevant anchor texts become irrelevant or several irrelevant anchor texts become relevant after calculating the relevance between the link-contexts and...

Focused web crawling traverses theWeb to collect documents on a specific topic. This is not an easy task, since focused crawlers need to identify the next most promising link to follow based on the topic and the content and links of previously crawled pages. In this paper, we present a framework based on Maximum Entropy Markov Models(MEMMs) for an enhanced focused web crawler to take advantage ...

Crawling “classical” web applications is a problem that has been addressed more than a decode ago. Efficient crawling of web applications that use advanced technologies such as AJAX (called Rich Internet Applications, RIAs) is still an open problem. Crawling is important not only for indexing content, but also for building models of the applications, which is necessary for automated testing, au...

Premotor and motoneurons could play regulatory roles in motor control. We have investigated the role of a premotor nonspiking (NS) neuron of the leech nervous system in two locomotive patterns: swimming and crawling. The NS neuron is coupled through rectifying electrical junctions to all the excitatory motoneurons examined. In addition, activation of motoneurons evokes chemically mediated inhib...

Focused crawling consists in searching and retrieving a set of documents relevant to a specific domain of interest from the Web. Such crawlers prioritize their fetches by relying on a crawl frontier ordering strategy. In this article, we propose to learn this ordering strategy from annotated data using learning-to-rank algorithms. Such approach allows us to cope with tunneling and to integrate ...

In this paper we intend to generate some set of optimal trajectories according to the number of control points has been applied for parameterizing those using B-spline curves. The trajectories are used to generate an optimal locomotion gait in a crawling worm-like robot. Due to gait design considerations it is desired to minimize the required torques in a cycle of gait. Similar to caterpillars,...