rangeland ecosystem contains various patches with different functions. structural and functional characteristics of rangeland patches are changed by management practices and can be used to interpret management effects. the structural and functional characteristics of fertilized patches in two rangeland ecosystems of ghareh ghir and maraveh tapeh were measured and analyzed in this study. a group...

An active antenna for transmitter application in S frequency band is designed and analyzed using harmonic balance technique which is based on the nonlinear model of active devices. In this active antenna, the amplifier is integrated with the radiator which is a rectangular patch antenna. This patch antenna is analyzed employing full-wave momentum method. By applying nonlinear model of transisto...

Background: Management of lymphedema is a challenging issue in surgery.  A variety of operations have been used, albeit with little success. Objective: To investigate the efficacy of testicular patch as a lymphatic conduit. Methods: An incision was made on the inguinal area of 10 dogs and all lymph nodes of inguinal area were excised. The tunica albuginea and parenchyma near the hilum of testes...

abstract parasitic insects face many decisions when foraging for host, some for example frequently have to make decisions with regard to staying in or leaving their current patch. in this study, we investigated how the foraging and oviposition behavior of lysiphlebus fabarum is influenced by (1) a female’s previous experience of encountering aphids host and (2) age of female parasitoids. to tes...

Using feature based (ie. interest image features that satisfy some metrics of geometric or photometric invariance [39, 50, 66, 74, 73]) or direct image methods (ie. derivatives or differences of image intensity patterns [2, 37, 49]) for 3D object/scene model construction [48, 97], image content retrieval [85, 14], object recognition [24, 66], video structure matching/parsing [83, 93, 92] and au...

Representing videos with layers has important applications such as video compression, motion analysis, 3D modeling and rendering. This thesis proposes a subspace approach to extracting layers from video by taking advantages of the fact that homographies induced by planar patches in the scene form a low dimensional linear subspace. In the subspace, layers in the input images are mapped onto well...

The purpose of this study is to investigate bending moment and the axial load capacity of a pressurized pipe suffering from a through-wall circumferential crack repaired by a composite sleeve. The three-dimensional finite element method (FEM) was adopted to compute the results, and the failure assessment diagram (FAD) was employed to investigate the failure behavior of the repaired pipe. The fi...

The spatial resolution of remote sensing images directly affects the accuracy, efficiency, and computational cost extracting fractional vegetation cover (FVC). Taking Liyang woodland region, Jiangsu Province, as study area, FVCs with varying resolutions were extracted separately from Sentinel-2, Landsat-8, MOD13Q1, MOD13A1. variations in analyzed at one specific time series within a year. resul...

Feature vectors can be anything from simple surface normals to more complex feature descriptors. Feature extraction is important in order to solve various computer vision problems: e.g. registration, object recognition and scene understanding. Most of these techniques cannot be computed online due to their complexity and the context where they are applied. Therefore computing these features in ...