En el presente trabajo se propone una estrategia de valoración a nivel global de los modelos obtenidos en economía mediante los modelos de ecuaciones estructurales simultáneas. Se proponen múltiples criterios debido a que la evaluación de la bondad de un modelo es más un proceso relativo...

Some exact distribution theory is developed for structural equation models with and without identities. The theory includes LIML, IV and OLS. We relate the new results to earlier studies in the literature, including the pioneering work of Bergstrom (1962). General IV exact distribution formulae...

In a simple model composed of a structural equation and identity, the finite sample distribution of the IV/LIML estimator is always bimodal and this is most apparent when the concentration parameter is small. Weak instrumentation is the energy that feeds the secondary mode and the coefficient in...

In the context of a single equation in a system of simultaneous equations there is evidently some confusion in the literature as to the correct approach to the problem of prediction. Here we explore this problem and compare three different approaches to it. We also relate this discussion to...

Nelson and Startz (Econometrica, 58, 1990), Maddala and Jong (Econometrica, 60, 1992) and Wolgrom (Econometrica, 69, 2001) have shown that the density of the two-stage least squares estimator may be bimodal in a just identified structural equation. This paper further investigates the conditions...

Services are the most important contributor to the GDP and also the most important job generator. Countries development, usually, is based on the services sector. The present paper is aiming to highlight the influence of the number of active enterprises in services on exports. The paper is based...

In post modern business administration, businesses’ planning its own activities and managing resources according to this, is not enough any more. This situation changes with the effect of globalisation and directs businesses to be strategic.Nowadays in which the importance of strategic...

The design of successful policies and their implementation through continuous development and modernization strategy, can ensure the permanence of institutions on educational market. Financial crunch, development of educational alternatives require promotion of modern systems for proper...

The purpose of our study is to investigate to what extent do SMEs from Cluj County conduct planning activities, what is the time period covered by these plans, how often the plans are reviewed. The success of strategic planning depends on the proper use of strategic tools so we want to find out...