Orthodontic treatment is routinely described to last, on average, 24 months. Nonetheless, every orthodontist has already experienced that this time length shows huge variability, depending on several factors that are inherent to the operator, the patient, scientific knowledge and mastering of the mechanics used in orthodontic movement. It is very likely that there is something else, something s...

The global climate system is composed of a number of subsystems F atmosphere, biosphere, cryosphere, hydrosphere, and lithosphere F each of which has a distinct characteristic time, from days and weeks to centuries and millennia. Each subsystem, moreover, has its own internal variability, all other things being constant, over a fairly broad range of time scales. These ranges overlap between one...

The aim of this chapter is to provide a comprehensive description of the notion of variability modeling in the context of software product line engineering and to give an overview of the techniques proposed for variability modeling. Since its first introduction in 1990, feature modeling [1] has been the most popular technique to model commonality and variability (C&V) of products of a product l...

abstract the quality of soil maps depends upon their ability to show the soils variability. thus, the accuracy of the maps used for crop recommendations is due to the accuracy of soil maps. this study was performed to investigate the amount of soil properties and crop yield spatial variability in s 2 and s3 units of a semi-detailed quantitative suitability map (1:50000 scale) for irrigated whea...

introduction: transcranial magnetic stimulation (tms) is a useful tool for assessment of corticospinal excitability (cse) changes in both healthy individuals and patients with brain disorders. the usefulness of tms-elicited motor evoked potentials (meps) for the assessment of cse in a clinical context depends on their intra-and inter-session reliability. this study aimed to evaluate if removal ...

background and aims: brucellosis is one of the most important common diseases among man and livestock which are considered as the major problem in the health of the humans and livestock. the importance of this disease isn’t limited to its physical problems and consequences, but it is considered as a major challenge of economic development in most countries. the aim of this study was to evaluate...

purpose: hypercapnia increases minute ventilation (v’e) with little effect on heart rate (hr), whereas hypoxia may increase hr without affecting v’e. however, the effects of hypercapnia and hypoxia on both heart rate variability (hrv) and the clustering of heart beats during spontaneous breathing (respiratory sinus arrhythmia – rsa), are not clear. methods: in this study, 10 human volunteers br...

Heart rate variability of left-handed and right-handed children in three different situations was compared. The first record was made in quite situation; the second one was made when child answered the questions about rewards in family and the third one when she (he) answered the questions about punishment. We have shown that heart rate variability of lefthanded children in three situations did...

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Selection of genotypes based on high value of heritability and forecasted genetic conditions would be an effective method for improvement of wheat cultivars. The present investigation was carried out to estimate the genetic variability of agro-physiological characters using biometrical genetic techniques in 20 bread wheat genotypes under irrigated condition. For this purpose an experiment was c...