نتایج جستجو برای: taking is considered
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Quicksort[2, 1, 3] is one of the most efficient and widely used sorting algorithms. The major drawback of quicksort is that worst case time complexity of naive implementations of quicksort is O(n2) with input size n. In order to avoid this worst case behavior, a variant of quicksort, so-called introsort[4] 1 , is often used. There exists another solution to keep the worst case complexity of qui...
This paper attempts to explore and critically compare the various definitions given to blended learning, primarily within the area of Higher Education. It starts with a general description of blended learning and its main characteristics, along with the reasons underlying its popularity and the criticism against it. The concepts of ‘blended learning’ and ‘blended teaching’ are compared and cont...
The evolution of Earth's climate on geological timescales is largely driven by variations in the magnitude of total solar irradiance (TSI) and changes in the greenhouse gas content of the atmosphere. Here we show that the slow ∼50 Wm-2 increase in TSI over the last ∼420 million years (an increase of ∼9 Wm-2 of radiative forcing) was almost completely negated by a long-term decline in atmospheri...
We report numerical observation of two new forms of stable localized solutions of the quintic complex Ginzburg-Landau equation. The 6rst form is a stationary zero-velocity solution, which consists of two motionless fronts and a source between them. We call this structure the "composite" pulse. We show that in some range of parameters, a composite pulse can coexist with a plain pulse solution. A...
A growing number of X-ray sources based on the free-electron laser (XFEL) principle are presently under construction or have recently started operation. The intense, ultrashort pulses of these sources will enable new insights in many different fields of science. A key problem is to provide x-ray optical elements capable of collecting the largest possible fraction of the radiation and to focus i...
kinetic modeling is an important issue, whose objective is the accurate determination of the rates of various reactions taking place in a reacting system. this issue is a pivotal element in the process design and development particularly for novel processes which are based on reactions taking place between various types of species. the fischer tropsch (ft) reactions have been used as the kineti...
The last few years have seen a quantum jump both in the size and accuracy of protein structures that can be solved by NMR.l These newest advances in the field are following right on the heels of the earlier development of NMR techniques for threedimensional structure de t e rmina t i~n~ .~ resulting in a substantial number of solution structures of small proteins over of the last decade. Curren...
Controlling spatiotemporal chaos in excitable media by applying low-amplitude perturbations locally is of immediate applicability, e.g., in treating ventricular fibrillation, a fatal disturbance in the normal rhythmic functioning of the heart. We look at a mechanism of control by the local application of a series of biphasic pulses, i.e., involving both positive and negative stimulation. This r...
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