infiltration process plays an important role in water cycle of the nature. conducting field experiments is necessary to determine the coefficients of infiltration equations due to the dependence of these coefficients to the soil type, soil surface conditions and the amount of initial soil moisture content. this study has been carried out in a field located in islamic azad university, marvdasht ...

background: malaria is a major cause of morbidity and mortality in nepal. the magnitude of malaria across the country is alarming and varies with location. therefore, the present study aimed to model malaria incidence rates during 1998 to 2009 in nepal. methods: data for the study were obtained from health management information system (hmis), ministry of public health. a negative binomial mode...

background: human resources, especially medical staff is one of the main components of health care system and organizational development. the purpose of this study was to estimate the required nurses for hospitals affiliated to tehran university of medical sciences based on the models of the world health organization and levine. methods: this study was cross-sectional and descriptive. seven hos...

â â â â â â  â  abstract â  outward-oriented economies seem to grow faster than inward-looking ones. does the literature on convergence have anything to say on this? in the dynamic heckscher-ohlin-samuelson model, with factor-price equalization, there is no convergence of incomes. this is because with identical preferences and return to capital, irrespective of initial levels the growth rates o...

abstract the purpose of this paper is to investigate the factors affecting adoption of agricultural crops insurance among apple growers in semirom and eghlid shahrestans and determining the best model. a survey was conducted using the stratified random sampling. data were collected by questionnaire from 240 adopters and 157 non – adopters. the results showed that adopters of insurance are more ...

over the past three decades vertical price transmission analysis has been the subject of considerable attention in applied agricultural conomics. it has been argued that the existence of asymmetric price transmission generates rents for marketing and processing agents. retail prices allegedly move faster upwards than downwards in response to farm level pricemovements. this is an important issue...

abstract the application of the crop growth models could facilitate irrigation water and fertilizer management due to reduce of field visits and direct measurements. these models are often so complex that it is difficult to understand them and some of those input data are not accessible. in this study, a simple model (vsm) was used to yield prediction of corn under different water and nitrogen ...