In this paper, we report on a wind observation method based the movement of hot-air balloons (HABs). A quality assessment was carried out by comparing against observations at meteorological tower Cabauw in Netherlands during May–September 2018, and obtained standard deviations error were σ u = 0.65 ms − 1 $$ {\sigma}_u=0.65\;{\mathrm{ms}}^{-1} v 0.69 {\sigma}_v=0.69\;{\mathrm{ms}}^{-1} for meas...

We prove that every tower of normal filters of height δ (δ supercompact) is precipitous assuming that each normal filter in the tower is the club filter restricted to a stationary set. We give an example to show that this assumption is necessary. We also prove that every normal filter can be generically extended to a well-founded V -ultrafilter (assuming large cardinals). In this paper we inves...

Based on preliminary assumptions and analysis, mathematical models have been used to estimate the behavior of the fires in the twin towers of the World Trade Center (WTC) on September 11, 2001. The hijacked-plane collision with each tower produced significant structural damage, generated a spectacular external fireball, and started burning within the tower. The fuel consumed by the fireball was...

(G) and observed discharge (Q), whereas the other data-driven model, ANN-Ensemble (ANN-E), and the two conceptual models, HBV and GR4J, use forecasted meteorological inputs (P and PET), whereby we employ ensemble seasonal meteorological forecasts. We compared low flow forecasts without any meteorological forecasts as input (ANN-I) and five different cases of seasonal meteorological forcing: (1)...

The aim of the current study is to develop a numerical tool that is capable of achieving an optimum shape and design of hyperbolic cooling towers based on coupling a non-linear finite element model developed in-house and a genetic algorithm optimization technique. The objective function is set to be the minimum weight of the tower. The geometric modeling of the tower is represented by means of ...

In this paper, Hop eld neural networks have been considered in solving tower of Hanoi test which is used in determining of de cit of planning capability of human prefrontal cortex. The main di erence of this work from the ones in the literature which use neural networks, is: The tower of Hanoi problem has been formulated here as a special shortest path problem. In the literature, some Hop eld n...

A way to see this work is how it connects existing elements. The goal is not so much to invent all new things, but to compose a new meaningful whole of different elements so that they will complement each other in novel ways. There are already massively multi-player on-line roleplaying games (mmorpg), where people participate in different worlds. Also, there are public displays with which peopl...

CPU speeds are increasing at a much faster rate than secondary storage device speeds. Many important applications face an I/O bottleneck. We demonstrate that this bottleneck can be alleviated through 1) scalable striping of data and 2) caching/prefetching techniques. This paper describes the design and performance of the Tower of Pizzas (TOPs), a portable software system providing parallel I/O ...

Macros are re ective tools that operate on the representation of programs. Though having been used, and still being useful, for more than thirty years, their semantics and pragmatics are still unclear. This paper proposes a new model to understand the macroexpansion process; this model is based on a re ective tower of macroexpansion engines.

Wind turbine towers are large structures designed to withstand the unique loading conditions imposed on them by the turbine’s nacelle and dynamic forces from the rotating blades. Observations and noise measurements of a particular wind turbine showed high noise levels at approximately 48 Hz, which could not be explained from the usual known potential noise sources. Correlated far field noise me...