Prey pursuit by an echolocating bat was studied theoretically and experimentally. First, a mathematical model was proposed to describe the flight dynamics of a bat and a single prey. In this model, the flight angle of the bat was affected by [Formula: see text] angles related to the flight path of the single moving prey, that is, the angle from the bat to the prey and the flight angle of the pr...

In this research, the impact of shoulder width and geometry of gas channel with different structures on proton exchange membrane (PEM) has been investigated using numerical method. 3D, non-isothermal was used with single straight channel geometrywhile maintaining the same boundary conditions and reaction area with addition of humidification for anode and cathode. Our study showed that an ellipt...

This paper presents case studies of the calculation of appraisals, the linguistic construal of emotions and attitudinal positions, in natural language design text. Using two data sets, one a standard set of movie review text and one a set of a natural language design text, we compare the performance of support vector machines for the classification of design documents by overall semantic orient...

In this paper, we take a real world application from a text database and present a case history. The techniques ultimately led to a discovery contradicting an accepted paradigm in seismology. Using simple, tailored, keyword extraction, we examined a text collection of earth-quake data. A discovery was made when an unusual pattern emerged from the text. We then tested a more comprehensive nu...

The following article presents a specific issue of semantic analysis of texts in natural language – text indexing and describes one field of its application (web browsing). The main part of this article describes a computer system assigning a set of semantic indexes (similar to keywords) to a particular text. The indexing algorithm employs a semantic dictionary to find specific words in a text ...

We describe the use of CAS calculators in a numerical methods mathematics subject offered to third year pre-service teachers. We show that such calculators, although very low-powered compared with standard computer based numerical systems, are quite capable of handling text-book problems, and as such provide a very accessible learning environment. We show how CAS calculators can be used to impl...

We have developed a system that can semiautomatically extract numerical and named entity sets from a large number of Japanese documents and can create various kinds of tables and graphs. In our experiments, our system semiautomatically created approximately 300 kinds of graphs and tables at precisions of 0.2–0.8 with only 2 h of manual preparation from a 2-year stack of newspapers articles. Not...

This study involves automatically identifying the sociolinguistic characteristics of fictional characters in plays by analyzing their written “speech”. We discuss three binary classification problems: predicting the characters’ gender (male vs. female), age (young vs. old), and socioeconomic standing (upper-middle class vs. lower class). The text corpus used is an annotated collection of August...

This article outlines the evaluation protocol and provides the main results of the French Evaluation Campaign for Machine Translation Systems, CESTA. Following the initial objectives and evaluation plans, the evaluation metrics are briefly described: along with fluency and adequacy assessed by human judges, a number of recently proposed automated metrics are used. Two evaluation campaigns were ...

The cylindrical Bessel differential equation and the spherical Bessel differential equation in the interval [Formula: see text] with Neumann boundary conditions are considered. The eigenfunctions are linear combinations of the Bessel function [Formula: see text] or linear combinations of the spherical Bessel functions [Formula: see text]. The orthogonality relations with analytical expressions ...