نتایج جستجو برای: challenging factors have put more constraints on tehran
تعداد نتایج: 10242066 فیلتر نتایج به سال:
In recent years, significant research efforts have been devoted to the optimal planning of power systems. Substation Expansion Planning (SEP) as a sub-system of power system planning consists of finding the most economical solution with the optimal location and size of future substations and/or feeders to meet the future demand. The large number of design variables, and combination of discrete ...
Ṣadrā presents the usefulness of the faculties of perception governed by the intellect as a fitting paradigm for understanding man’s being in the world in relation to the divine purpose and source of this being. Perception raises challenging questions which, while peripheral to philosophy proper, have contributed to the debate on knowing and being. Dating back to the Presocratics, this debate c...
the present study was an attempt to compare the effect of peer metalinguistic corrective feedback on elementary and intermediate efl learners speaking ability to see which level benefits more from this type of feedback. to this end, 117 female efl learners at grade 3, al-zahra high school in kermanshah, iran were non-randomly chosen. the homogeneity of the participants was attained through a pi...
background: although many planners of professional continuing education programs believe that this type of education positively affects the nurses’ performance, the results obtained by conducted research do not confirm such a perspective. in fact, inadequate application of these trainings in clinical practice is among the most challenging areas in nursing practices. hence, this study was conduc...
Human life has recently undergone surprising changes. Organizations, as human achievements, have to adapt themselves to such great developments in order to survive and improve. One of the basic approaches to enhancing organizational "retention coefficient" and improving managerial capabilities is to allocate a central role to human resources of organizations. Human resources empowerment can pro...
nowadays, air pollution is a global problem that has had significant growth by technology development, population growth andindustrial development. industrial development brought natural resources deterioration, more manufacturing products, and more environmental pollutants. if pollutant won’t be controlled, human-being and wildlife will face the critical risks. significant release and critical...
modelling and forecasting stock market is a challenging task for economists and engineers since it has a dynamic structure and nonlinear characteristic. this nonlinearity affects the efficiency of the price characteristics. using an artificial neural network (ann) is a proper way to model this nonlinearity and it has been used successfully in one-step-ahead and multi-step-ahead prediction of di...
this study was an attempt to investigate the effect of teaching meta cognitive strategies on iranian intermediate efl students speaking proficiency. in this study the researcher has employed metacognitive strategies taken from brown (2000) to teach speaking strategies to number of participants. the participants were intermediate students of shokouh language institute; they were divided into an ...
background and objectives: operating room (or) scheduling is key to optimal operating room productivity. the significant uncertainty associated with surgery duration renders scheduling of surgical operation a challenging task. this paper proposes a novel computational stochastic model to optimize scheduling of surgeries with uncertain durations. the model considers various surgical operation co...
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