Loading conditions and complex geometry have led the cylinder heads to become the most challenging parts of diesel engines. One of the most important durability problems in diesel engines is due to the cracks valves bridge area. The purpose of this study is a thermo-mechanical analysis of cylinder heads of diesel engines using a two-layer viscoplasticity model. In this article, mechanical prope...

This paper compares the retrieval performance of seven public search engines on Thai queries by using a blind evaluation. Two of the engines used in this study are Thaifocused search services, while the remaining engines are large, commercial search engines that have wider collections of web data and support several languages. The results are compared by Mean average precision (MAP) and Mean re...

As the number of text retrieval systems (search engines) grows rapidly on the World Wide Web, there is an increasing need to build search brokers (metasearch engines) on top of them. Often, the task of building an eeective and eecient metasearch engine is hindered by the heterogeneities among the underlying local search engines. In this paper, we rst analyze the impact of various heterogeneitie...

Search engines have become a de facto gateway for people to finding information or shopping online. The reliability of companies in search results is critical as search engines determine what information people access. Major search engines provide two types of results — organic and paid. While paid results have been an advertising boon for search engines, they are expected to contain more comme...

Eight World Wide Web search engines are compared on the basis of traditional Information Retrieval measurements Recall and Precision. It is found that the most significant factor that is correlated to precision is the topic of the query. Significant groupings at the level of the search engines themselves are found for both recall and precision. The paper also categorizes search engines by infor...

Internet search engines have become an indispensable part of everyday living and business today. Although the capabilities of Internet search engines are incrementally improving steadily, it may be time for us to explore a few new directions that can take the search engines to the next level. In this article, we will summarize the current activities in advancing the state of Internet search eng...

The search neutrality debate stems from content or service providers complaining about being discriminated and ranked unfairly low by engines, raising the need for methodologies tools to verify bias in engine rankings. For that purpose, we propose this paper a simple yet effective framework based on comparison of results provided several build corresponding tool carry out campaign tests. main o...

Packers have long been a valuable tool in the toolbox of offensive users for evading the detection capabilities of signature-based antivirus engines. However, selecting the packer that results in the most effective evasion of antivirus engines may not be a trivial task due to diversity in the capabilities of both antivirus and packers. In this paper, we propose the creation of an online automat...

The purpose of the work is to design an efficient methodology for evaluating the performance of public available WWW search engines. The first goal of this procedure is to develop a model representing WWW engines. This objective can only be accomplished by carefully studying the features of each search engine that is examined. This paper presents the methodology developed for evaluating the WWW...