Information filtering systems retrieve documents from document streams according to their users’ long-term information interests represented by so-called profiles. The Profile Editor proposed in this article allows the interactive, direct manipulative construction of profiles. It takes a set of ranked queries and compiles them into a single profile by cropping and re-ranking the queries’ result...

We have calculated powder X-ray diffraction (PXRD) line profiles based on the absorption of X-rays in passing through materials. The results showed that the line profile function depends on the absorption coefficient of the sample. The observed aluminum PXRD patterns are in excellent agreement with the calculated line profile functions derived from absorption. This work also demonstrated that b...

The connection between immigration and crime is one of the most contentious topics in contemporary society. These discussions are not new, as debates on the issue date back more than 100 years. A general point on which both proand anti-immigration writers agree is that, as we enter the new millennium, the latest wave of immigration is likely to have a more important impact on society than any o...

This paper discusses the mechanical design and simulation of a novel omnidirectional wheel based on Reuleaux-triangles. The main feature of our omniwheel is that the point of contact of the wheel with the floor is always kept at the same distance from the center of rotation by mechanical means. This produces smooth translational movement on a flat surface, even when the profile of the complete ...

This paper analyses firm formation and innovation in an economy where agents differ with respect to their optimism in the face of ambiguity. Individuals choose between starting a firm or working in one; and also between employing a traditional technology or a new technology about which little is known. In the face of ambiguity, decision-makers are either optimistic or pessimistic. We study the ...

In an expert search task, the user’s need is to identify people who have relevant expertise to a topic of interest. An expert search system predicts and ranks the expertise of a set of candidate persons with respect to the user’s query. In this work, we propose a novel approach for estimating and ranking candidate expertise with respect to a query. We see the problem of ranking experts as a vot...

In recent years, a growing interest has been given to trajectory data mining applications that permit to support mobility prediction with the aim of anticipating or pre-fetching possible services [3]. Proposed approaches typically consider only spatio-temporal information provided by collected trajectories. However, in some scenarios, such as that of tourist supporting, semantic information whi...

Information transmission is an important part of the wellbore trajectory automatic control system. Combined with the characteristics of the guided drilling system, drilling fluid pulse is selected as a tool for trajectory control. Negative pulse transmission of drilling fluid is one of the key technologies to realize wellbore trajectory automatic control. In this paper, the working principle of...

In this paper, we describe our guided summarization system that participated in the TAC 2011 competition. We submitted two runs for the guided summarization task by following a random walk paradigm. Two different approaches were applied for the update component to create two runs of our guided summarization system: 1) using ROUGE (RecallOriented Understudy for Gisting Evaluation), and 2) using ...