The invasive species Spartina alterniora Loisel was introduced to the eastern coast of China in the 1970s and 1980s for the purposes of land reclamation and the prevention of soil erosion. The resulting interspecific competition had an important influence on the distribution of native vegetation, which makes studying the patterns and mechanisms of the interactions between Spartina alterniora Lo...

in this paper, the value of exchange rate was calculated in order to determine comparative advantage in crops of sari township during 2009-2010. hence, first, comparative advantage indices are estimated by using a policy analysis matrix. the results showed that just wheat has a drc index of one in the minimum amount of national currency exchange rate value. this indicated the fact that only whe...

this research was carried out for evaluation of competitive ability of some wheat cultivars (triticum aestivum l.) of recommended wheat in dargaz region with common weed of feral rye (secale cereale). experiment was conducted as factorial based on randomized complete block design with three replications in 2010-2011 growing season. experimental factors were included four wheat cultivars of says...

The monopoly power in the duck egg and meat market structure in Tamil Nadu, the fourth largest duck raising zone of India was analysed by means of Concentration Ratio (CR) and Hirschman-Herfindahl Index (H index) and in the absence of monopoly, Bain’s classification was used to identify the prevailing structure of market. Five channels were identified to market eggs, while three for duck meat. ...

In tennis, the relative positioning of players on court constrains their opportunities to perform successful actions. In this study we proposed and validated an empirical function that captures the spatial-temporal relationship between tennis players during competitive performance. This parameter, termed goal-directed displacement index (GDD Index), is defined over time by the product of both p...

Resumo: Competitive learning is an important approach in Machine Learning. In this paper, we present a method for determining overlapping structures or vertices in the network using a stochastic competitive model, where several particles walk in the network and compete with each other to occupy as many nodes as possible, while attempting to reject intruder particles. The proposed measure for de...

In aquatic sports such as swimming, kayaking and rowing, a high degree of technical proficiency is necessary to develop the speed demanded for competitive success. The Technical Economy Index (TEI) is a quick and simple measure which enables a coaches of a variety of competitive sports to monitor both technical development and economy of motion during execution of a race plan. This article disc...

We assess the competitiveness of the $400 billion dollar U.S. bank consumer loan market by comparing results from different competition measures–HHI, Lerner Index, H-Statistic along with three others, two of which are related to frontier analysis. These measures are typically weakly related to one another and only half of them identify banks with the highest loan price and spread as also being ...

This paper describes a study of a simple open learner model that can be optionally released to peers in named or anonymous form, to facilitate collaborative and competitive learning in a situation where the learner model contents contributed to students' assessment. Results suggest that, under the right conditions, students may start working sooner; discussion amongst students can be increased;...