The purpose of this paper is to explore the relationship between the use of ICT, the accumulation of e-skills and innovation capacities of teachers. A Web questionnaire was designed in order to examine the e-skills and the daily practices of vocational high-school teachers in Tunisia. The results and findings are based upon 288 HET respondents. A structural Equation model was developed in order...

this paper provides a critical perspective on entrepreneurial characteristics and gives an input to the discussion on the influence of entrepreneurial leadership, communication skills, determination and motivation on sales and customer satisfaction. it also presents the findings from an empirical study examining the structural effect of these four entrepreneurial characteristics on performance....

variable rate spray applications using proportional control systems can greatly reduce pesticide use and off-target contamination of environment in orchards. variable rate spraying of the canopy allows growers to apply pesticides only to the target, only use the correct quantity according to canopy size, season and growth stage and to apply plant protection products in an economic and environme...

The coordination geometries and the electronic structures found in trichlorocuprates(II) are reviewed. Trichlorocuprates occur in two types: dimers and chains. The crystal chemistry of both types is discussed. A simple electrostatic argument, charge compensation, allows the prediction of the overall structure. Interest· in the former class is focused on the different ways of dimer stacking, ffi...

Metallothioneins (MTs) are low molecular weight proteins characterized by a high cysteine content and give rise to metal-thiolate clusters. Most MTs have two metal clusters containing three and four bivalent metal ions, respectively. The MT gene family in mammals consists of four subfamilies designated MT-1 through MT-4. MT-3 is expressed predominantly in brain and MT-4 in differentiating strat...

Methods. Serial tangential sections and whole-mount preparations of the scleral spur region of 18 human eyes of different ages were investigated with electronmicroscopic and immunohistochemical methods. For immunohistochemistry antibodies against neurofilament-proteins, synaptophysin, substance P (SP), calcitonin gene-related peptide (CGRP), vasoactive intestinal polypeptide (VIP), neuropeptide...

Biochemical study of thymus leukemia antigen (TL) from thymocytes of various Tla genotypes and from leukemia cells revealed features that, given present evidence, are peculiar to TL among class I products of the H-2:Qa:Tla region of chromosome 17. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) of TL from thymocytes of all TL+ mouse strains, precipitated by anti-TL antiseru...

The natural history of unruptured intracranial aneurysms (IAs) is poorly understood. At present, risk factors for aneurysm rupture are limited to demographics and rudimentary anatomic features of the aneurysm. The first sign of aneurysm destabilization and rupture may be subarachnoid hemorrhage, a potentially devastating brain injury with high morbidity and mortality. An emerging body of litera...

in this paper, effects of the cross shore and groyne wall slopes on flow parameters around an impermeable groyne were considered using a three-dimensional numerical cfd model (i.e., fluent). the k-ε turbulence model was used to evaluate the reynolds stresses. the model was first applied to a vertical groyne on a flat bed and the model results were compared with the relevant experimental data. t...