We present an experiment in which we test for the effect of participating in a social exchange exercise on revealed risk and ambiguity preferences. In our experiments, subjects make choices over lotteries that reveal their risk and ambiguity preferences. They then participate with a small group in an unstructured on-line chat. After the chat, they reconsider their choices in the risk and ambigu...

Creativity and high performance in learning processes are the main concerns of educational institutions. E-learning contributes to the creativity and performance of these institutions and reproduces a traditional learning model based primarily on knowledge transfer into more innovative models based on collaborative learning. In this paper, the authors focus on the preliminary investigation of f...

one important issue that any material or test designer should bear in mind is to be careful about developing teaching and testing reading materials which would not be to the benefit of a group of readers or examinees and to the detriment of some others. one of the factors which may cause difference between the performances of english learners or test takers is the selection of reading tests wit...

this study was conducted in english for academic purposes (eap) context to explore iranian teachers' perceptions of their pedagogical content knowledge (pck) and their sense of professional identity (pi) as well as to scrutinize how their cognitions were practiced in eap classes. to this end, two elt teachers and two content instructors (i.e. subject experts who teach eap courses in addition to...

an investigation on the thermal performance of the soil as geothermal heat energy storage medium has been conducted. the thermal characteristics of the soil storage and the heat transfer from a heat exchanger in the soil, surrounding and bottom surface will be discussed. this investigation forms a contribution to a project to realize such storage to be charged from a solar heating system. this ...

background: fenugreek (trigonella foenum - graecum l.) is an annual medicinal plant belongs to the legume family and has anti-diabetic, anti-fertility, anticancer, anti-microbial, anti-parasitic and hypocholesterolaemic effects. objective: evaluation of growth and trigonelline /mucilage content in fenugreek under application of plant growth regulators (pgr). methods: the experiment was conducte...

to determine the relative salt tolerance and/or resistance in seedlings of pistachio genotypes, four pot experimentswere conducted. in experiments 1 and 2, the effects of salinity on growth indices were studid. experiments were donein the form of split plot based on rcbd. in each experiment, mainplots consisted of different electrical conductivitiesof irrigation water (eciws). in experiment 1, ...

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