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تعداد نتایج: 16850284 فیلتر نتایج به سال:
Due to a shortage of available phosphorus (P)-loss datasets, simulated data from an accurate quantitative P transport model could be used to evaluate a P Index. The objective of this study was to compare predictions from the Texas Best Management Practice Evaluation Tool (TBET) against measured P-loss data to determine whether the model could be used to improve P Indices in the southern region....
with the introduction of communicative language teaching, a large number of studies have concerned with students’ oral participation in language classrooms. although the importance of classroom participation is evident, some language learners are unwilling to engage in oral activities. this passivity and unwillingness to participate in language classroom discussions is known as “reticence”. rev...
while performance-based language assessment has led to an increased authenticity and content validity in the practice of writing assessment, the reliability of ratings has become a major issue. research findings have shown different reactions by native english speaker (nes) and non-native english speaker (nns) teachers to students’ writings. the focus of this study is on investigating whether i...
Long-term streamflow simulations of the Land Surface Models (LSMs) are necessary for comprehensive evaluation hydrological responses to climate change. The high complexity and uncertainty in LSM modelling require model calibration improve simulation performance stability. Objective functions commonly used process, choice objective plays a crucial role identification. Kling Gupta Efficiency (KGE...
growing demands and requires of high data rate systems cause significant increase of high frequency systems for wideband communication applications. as mixers are one of the main blocks of each receivers and its performance has great impact on receiver’s performance; in this thesis, a new solution for ku-band (12-18 ghz) mixer design in tsmc 0.18 µm is presented. this mixer has high linearity a...
Obtaining more accurate flood information downstream of a reservoir is crucial for guiding regulation and reducing the occurrence disasters. In this paper, six popular ML models, including support vector regression (SVR), Gaussian process (GPR), random forest (RFR), multilayer perceptron (MLP), long short-term memory (LSTM) gated recurrent unit (GRU) were selected compared their effectiveness i...
Abstract In the present study, a new hybridization strategy for predicting groundwater table (GWT) and drought analysis is presented. Therefore, hybrid of bi-directional long short-term model (BLSTM) Harris hawk optimization (HHO) algorithm, namely BLSTM–HHO applied. this lagged data GWT are used as input, whereas current output. Additionally, standalone BLSTM, (LSTM), artificial neural network...
this study examined the effects of collaborative strategic reading and direct instruction in persuasion on iranian high school students persuasive writing and attitudes. students in three intact classes were assigned to one of three treatment conditions: collaborative strategic reading and direct instruction in persuasion or direct instruction in persuasion or a control group. treatment effects...
textbooks play a crucial role in language learning classrooms. the problem is that among the great quantity of available textbooks on the market which one is appropriate for a specific classroom and a group of learners. in order to evaluate elt textbooks, theorists and writers have offered different kinds of evaluative frameworks based on a number of principles and criteria. this study evaluate...
This study evaluated the reduction effect of non-point source pollution by applying best management practices (BMPs) to a 1.21 km2 small agricultural watershed using a SWAT (Soil and Water Assessment Tool) model. Two meter QuickBird land use data were prepared for the watershed. The SWAT was calibrated and validated using daily streamflow and monthly water quality (total phosphorus (TP), total ...
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