Background: Considering the overall tendency in psychology, researchers in the field of work and organizational psychology have become progressively interested in employees’ effective and optimistic experiments at work such as work engagement. This study was conducted to investigate 2 main purposes: assessing the psychometric properties of the Utrecht Work Engagement Scale, ...

in today's competitive market, quality has an important role in manufacturing system. the manufacturers attempt to maintain their production system in a proper condition to produce high quality products. one of the key factors to achieve this goal is maintenance policy. most studies on maintenance focused on machines and less attention has been paid to human resources as the most important...

in order to determine the best index for evaluating maize genotypes, 15 maize inbred lines were evaluated in two planting dates, 6 july to coincide heat stress with pollination time and 27 july as normal planting to avoid high temperature during pollination and grain filling period, using a randomized complete block design with three replications, in shushtar city, in 2007. result showed that i...

this article describes a knowledge management (km) success model that is derived from observations generated through an empirical study of km in an iranian consultant company and km success factors in the literature which is shown that company has a weak situation in each factor. so company needs a measurement model in order to assess knowledge management implementation processes in each step t...

In this paper, the effective parameters on the ductility demand of the seismically base isolated structure are investigated, and then a relation between the strength reduction factor and the target ductility is presented. The investigation has been conducted by modelling the base isolated structure as a two degree of freedom model in the OpenSees software, and the possibility of yielding in the...

This study aimed at developing and validating a new model and instrument to explore attitudes of Iranian EFL learners towards English as an International Language (EIL). In so doing, the researchers followed several rigorous steps including extensive literature review, content selection, item generation, designing the rating scales and personal information part, Delphi technique, item revision,...

In the present study, the amount of nitrate and phosphate leaching from agricultural lands into the Zanjanrood River in Iran was simulated using the Soil & Water Assessment Tool (SWAT) model. The measured average monthly discharges at the Sarcham station were used to calibrate and validate the SWAT model, and the SWAT Calibration and Uncertainty Program (SWAT-CUP) model was applied to perform t...

The UNIQUAC activity coefficient model is extended to predict solid-liquid equilibrium of isotactic crystalline poly (1-butene), iPBu-1, in different organic solvents. The UNIQUAC activity coefficient model used in this work is based on the concept of group contribution and consists of combinatorial, residual and free volume terms. To account for branching of atom groups in the monomer structur...

This paper takes the listed companies in US stock market from July 1993 to October 2021 as a sample compare predictive ability of three-factor model and five-factor model. The main conclusions are follows: Firstly, correlation between factors three factor five is not significant. Second, using test profitability effect investment style effect, it found that there still significant after adjustm...