This paper develops a new mathematical-statistical approach to analyze class of Flajolet-Martin algorithms (FMa), and provides analytical confidence intervals for the number F0 distinct elements in stream, based on Chernoff bounds. The FMa has reached significant popularity bigdata stream learning, attention literature mainly been algorithmic aspects, basically complexity optimality, while stat...

It is well known that if the power spectrum of a continuous time stationary stochastic process is not limited to a finite interval, data sampled from that process at any uniform sampling rate leads to biased and inconsistent spectrum estimators. As a result, depending on the range of frequency of interest, one uses anti-alias filtering and subsequently treats the filtered process as bandlimited...

We propose a realistic 3D positioning system for indoor navigation that exploits visible Light Emitting Diodes (LEDs), placed on the ceiling. A unique frequency tone is assigned to each lamp and modulates its intensity in periodic time slots. The Time Difference of Arrival (TDOA) measured without need synchronization between sources receiver, then it used accurately estimate receiver position. ...

The importance of an accurate prediction of all what happens when a nuclear interaction takes place, i.e. of the cross sections of the reactions which may occur and of the spectra of particles, γ rays and heavy residues which may be produced, cannot be underestimated from the point of view of both basic knowledge and the possible use of nuclear physics in interdisciplinary fields and applicatio...

A new technique to measure the lifetime � of a neutron-radioactive nucleus that decays in-flight via neutron emission is presented and demonstrated utilizing MonteCarlo simulations. The method is based on the production of the neutron-unbound nucleus in a target, which at the same time slows down the produced nucleus and the residual nucleus after (multi-) neutron emission. The spectrum of the ...

BACKGROUND The pulmonary artery catheter (PAC) remains widely used in acute lung injury (ALI) despite known complications and little evidence of improved short-term mortality. Concurrent with NHLBI ARDS Clinical Trials Network Fluid and Catheters Treatment Trial (FACTT), we conducted a prospectively-defined comparison of healthcare costs and long-term outcomes for care with a PAC vs. central ve...

23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Partial EVPI calculations can quantify the value of learning about particular subsets of uncertain parameters in decision models. Published case studies have used different computational approaches. This paper examines the computation of partial EVPI estimates via Monte-Carlo sampling algorithms. Our mathematical definition shows two nest...

La producción agrícola es muy riesgosa, especialmente en el caso de la papa, y riesgo diferenciado entre Costa Sierra. En Costa, Lima muestra altos rendimientos por hectárea mientras que, Sierra, Ayacucho bajos rendimientos. Con objetivo comparar los niveles productores papa blanca las regiones Lima, incidencia variables probabilísticas (precio chacra, rendimiento hectárea, costos fertilizantes...

El objetivo de este estudio es medir el riesgo mercado portafolios acciones del financiero mexicano en periodos alta volatilidad mediante cuatro metodologías: 1) la Beta CAPM (-CAPM), 2) VaR-Simulación Histórica (VaR-SH), 3) VaR-Delta Normal (VaR-δN) y 4) Montecarlo (VaR-SM). Estas métricas se seleccionaron por ser parsimoniosas. Los resultados muestran que las metodologías son consistentes vo...