En este trabajo se busca determinar los sectores protagonistas de la economía región Nordeste del Brasil a luz metodología matriz insumo-producto, sobre base estructura económica 2011. Para ello, actualizó insumo-producto regional 2004 2011 y, posteriormente, calcularon índices encadenamiento Rasmussen-Hirschman, el campo influencia y puros encadenamiento, así como multiplicadores producción, e...

This paper explores the effect of competition on prices and frequencies for Interurban rail market in Europe. Intramodal is assessed by Herfindahl-Hirschman Index (HHI). Intermodal takes into account new types service such as coach carpooling services. The originality analysis stems from method database used. results show that intra-modal has a significant impact but not economy class because o...

En este trabajo se aplican tres indicadores de concentración económica para evaluar la producción del espárrago en Michoacán, México: i) Tasa Concentración (TCk); ii) índice Herfindahl Hirschman (IHH); y, iii) Linda (IL), así como cinco índices más medir especialización productiva: Dominancia (ID); Kwoka (IK); Horvath (IH); iv) Rosenbluth (IR); v) Gini (IG). El análisis considera los datos disp...

This paper has examined the pattern of protection of plant varieties and the early impact of plant variety protection (PVP) on Indian seed industry. The results have shown a positive response by all the actors involved in seed provision, viz. public research institutes, private seed companies, and farmers in terms of participation in protection of varieties. To measure the concentration of priv...

The authors gratefully acknowledge the contributions of Lisa Kahle, Information Management Services, Inc., for SAS® programming and data analysis; WenYen Juan, USDA Center for Nutrition Policy and Promotion (CNPP), for producing the figures and creating the data for the Whole Fruit component; Thea Palmer Zimmerman, Westat, Inc., for coding the exemplary menus; Meredith Morrissette, National Can...

where φ :Rn → C and φt(x)= t−nφ(x/t), t > 0. For conditions of validity of identity (1.1), we may refer to [3]. Hankel convolution introduced by Hirschman Jr. [5] related to the Hankel transform was studied at length by Cholewinski [1] and Haimo [4]. Its distributional theory was developed byMarrero and Betancor [6]. Pathak and Pandey [8] used Hankel convolution in their study of pseudodifferen...

In this review, we describe the creation of a large database of thermoelectric materials prepared by abstracting information from over 100 publications. The database has over 18 000 data points from multiple classes of compounds, whose relevant properties have been measured at several temperatures. Appropriate visualization of the data immediately allows certain insights to be gained with regar...

Risk analysis depends to a large extent on the type of data. Aggregate data can serve as a useful surrogate for individual data. However, in practice, there is uncertainty on the reliability and adequacy of aggregated data. In this paper we estimate the Herfindahl-Hirschman Index (HHI) for a loan portfolio using both aggregate data and individual data. Then, we compare both estimates to assess ...

Consumer search is analysed in a cross-sector study of six markets in the US, Germany and UK using online panel data. Two constructs are used to measure the search process: the consideration set and use of price comparison engines. The consideration sets range from 2.3 to 3.1 in the US, from 2.3 to 2.6 in Germany and from 2.6 to 3.2 in the UK, regardless of the use of price comparison engines. ...

This Lecture begins with a puzzle about Albert Hirschman’s famous work, Exit, Voice, and Loyalty: Why do we make much of exit and voice but utterly neglect loyalty? It’s a question that goes well beyond Hirschman’s book. For example, much of constitutional theory is preoccupied with a single question: What does a democracy owe its minorities? And most of the answers to this question fit natural...