measuring sensitivity of hydraulic structures is considered as an approach for evaluation of water projects performance, due to lower distribution efficiency in irrigation and drainage project schemes. sensitivity analysis approach for irrigation structures is one of flow analysis methods which are developed in recent years in order to measure the behavior of flow in hydraulic structures in an ...

production of highly viscous tar sand bitumen using steam assisted gravity drainage (sagd) with a pair of horizontal wells has advantages over conventional steam flooding. this paper explores the use of artificial neural networks (anns) as an alternative to the traditional sagd simulation approach. feed forward, multi-layered neural network meta-models are trained through the back-error-propaga...

We present a technique for automatic detection of drainage channel networks on digital images acquired by conventional satellites such as LANDSAT and SPOT. Since these satellites are sun{synchronous, the approximate local sun angle at time of image acquisition is always known. Consequently, the spatial behavior of shading with respect to channels and other topo-morphologic features is known. Th...

was selected, and after incision and iridectomy, the cup was carefully adjusted to the anterior capsule, and suction applied with the full power of the instrument. On attempting to make slight movement to break down the. zonule, the cup immediately lost its grip. A , second attempt was made with the same result, and it was obvious that the strength of the vacuum was not sufficient for the purpo...

1. introduction nowadays, population increase, progress in science and technology and development of industrial installations with the shortage of places in metropolitan areas have made considerable changes in the morphology of watersheds. violation to territory of rivers, channels, and streams causes alterations in natural drainage pattern and overflowing due to the lower capacity of the chang...

Introduction: This study aimed to present a system based on intelligent models that can enhance the accuracy of diagnostic systems for acute leukemia. The three parts including preprocessing, feature extraction, and classification network are considered as associated series of actions. Therefore, any dysfunction or poor accuracy in each part might lead in general dysfunction of...

Introduction: Most of the cratered uplands of Mars are dissected by networks of branching valleys, whose evolutionary history is still controversial [e.g. 1, 2]. The valleys show branching patterns closely analogous to terrestrial fluvial valleys, which may indicate that the valleys were cut primarily by surface runoff after precipitation [2]. However, short, stubby tributaries and amphitheater...

side weir is a flow control structure that used extensively in irrigation and drainage as well as sewer networks. throughout the present research, a study comprised of 162 experiments was done on sharp-crested semi-circular side weir. since the height in this side weir varies along its length, this feature enables it to more properly control flood than rectangular side weirs in various flood co...

In this paper, we deal with the task of extracting first order temporal facts from free text. This task is a subtask of relation extraction and it aims at extracting relations between entity and time. Currently, the field of relation extraction mainly focuses on extracting relations between entities. However, we observe that the multi-granular nature of time expressions can help us divide the d...