نتایج جستجو برای: empirical model
تعداد نتایج: 2246682 فیلتر نتایج به سال:
abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...
In the present research, the performances of six empirical models, i.e., simple threshold exceedance, fixed proportion exceedance, quadratic function of storage, power function of storage, cubic function of storage, and exponential function of storage were investigated for estimation of groundwater potential recharge in a semi-arid region. First, the FAO Dual Crop procedure was used to calibrat...
This chapter discusses the theoretical and empirical issues relevant to the study. The chapter consists of 8 parts. Section 3.1 provides the theoretical background for educational investments. Section 3.2 discusses the benefits of education. Section 3.3 discusses the costs of education. Section 3.4 discusses the concepts of net present value and internal rate of return. Section 3.5 outlines the...
abstract from longley, the various equations for determining the runoff to water management are presented by the researchers that are widely used in hydrologic sciences. in this study by using observational data, was evaluated empirical, artificial neural network (ann) and ca-active neuro-fuzzy inference system (canfis) models in estimation of runoff. for this purpose, by using climatic and phy...
in the real world there are groups which composed of independent units. the conventional data envelopment analysis(dea) model treats groups as units, ignoring the operation of individual units within each group.the current paper, investigates parallel system network approach proposed by kao and modifies it. as modi ed kao' model is more eligible to recognize ecient groups, a new ranking m...
This chapter discusses the theoretical and empirical issues relevant to the study. The chapter consists of 8 parts. Section 3.1 provides the theoretical background for educational investments. Section 3.2 discusses the benefits of education. Section 3.3 discusses the costs of education. Section 3.4 discusses the concepts of net present value and internal rate of return. Section 3.5 outlines the...
In this article, sediment processes and shoreline changes at Lengeh and Kong ports coastline are investigated. Comprehensive studies on effective parameters on sediment processes have been performed and coastal sediment transport rate in the area is estimated. For this purpose a conceptual model has been envisaged and the empirical and numerical models, calibrated and validated based on the con...
The structure-conduct-performance (SCP) paradigm has constituted an enduring empirical tradition in empirical industrial economics and has the advantage of clarifying the basic building blocks of the competitive mechanisms. This paper presents a SCP model to estimate causes and effects in Iranian manufacturing industry in 2009. The model used in this paper is a system of four simultaneous equ...
In this commentary, we establish a relationship between medical sociology and the study of medical tourism and cross-border healthcare by introducing Ronald Andersen’s behavioral model of healthcare use, and linking this model to the recent empirical study of Kovacs et al. on patients travelling to Hungary for orthopedic treatment. Finally, we plead for more measurement in the field of patient ...
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