Resultados de búsqueda - time data analysis

Clustering of Rainfall Stations in RH-24 Mexico Region Using the Hurst Exponent in Semivariograms por Benavides Bravo, Francisco Gerardo, Almaguer Martínez, Francisco Javier, Soto Villalobos, Roberto, Tercero Gómez, Víctor, Morales Castillo, Javier

“…This paper explores the behavior of rainfall variations in different periods, using long-range correlations analysis. Semivariograms and Hurst exponent were applied to historical data in different pluviometric stations of the R´ıo Bravo-San Juan watershed, at the hydrographic RH-24 Mexico region.The database was provided by theWater National Commission (CONAGUA). …”
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Alcohol abuse among puerto ricans: in search of a theoretical model. por Díaz, Héctor Luis

“…A secondary analysis of data was conducted on a cross-sectional survey conducted by the author. …”
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Structural characterization of the equatorial F region plasma irregularities in the multifractal context por Joshi, Neelakshi, Rosa, Reinaldo R., Savio, Siomel, Kherani, Esfhan Alam, de Meneses, Francisco Carlos, Stephany, Stephan, Muralikrishna, Polinaya

“…The multifractal detrended fluctuation analysis and the p-model fit are used to analyze the plasma density fluctuation time series. …”
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Measurement and recording of magnetics fields at high altitudes por Limón Díaz, Pedro Antonio, García Ballinas, Sirgei, García Ramírez, Mario Alberto

“…When a land-air misile is fired to pursuit a mobil target, quite a few variables play a key role in order to reach and neutralise the target in no-time. It is desired; nevertheless, this system requires an amount of time, fuel, real-time data analysis as well as a discriminator system, all these in order to reach the mobil target. …”
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Automatización contable con inteligencia artificial: Beneficios y desafíos para las empresas por Ordóñez Sánchez, Sergio Gabriel, Hernández Barrena, Gerardo, Martínez Hernández, Ángel

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Propuesta de mejora para el desgaste uniforme de los moldes por García Rebolloso, Martha Elia, Vega García, Karina, Colunga Jaime, Roxana, Bermúdez Ruiz, Karen Alejandra, Torres Bugdud, Arturo

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Phylogenomics of alligator lizards elucidate diversification patterns across the Mexican transition zone and support the recognition of a new genus por Blair, Christopher, Bryson Jr., Robert W.

“…However, there is still no consensus regarding appropriate methods of phylogenomic analysis that make the best use of these heterogeneous data sets. …”
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In vitro gentamicin exposure alters caveolae protein profile in cochlear spiral ligament pericytes por Ghelfi, Elisa, Grondin, Yohann, Millet, Emil J., Bartos, Adam, Bortoni, Magda, Oliveira Gomes dos Santos, Clara, Treviño Villarreal, Humberto J., Sepúlveda Sepúlveda, Rosalinda, Rogers, Rick

“…Bioinformatic analysis of the data shows a decreased expression of proteins involved in genetic information processing, and an increase in proteins involved in metabolism, vesicular transport and signal transduction in gentamicin treated cells. …”
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Measuring the importance of oil-related revenues in total fiscal income for Mexico por Reyes Loya, Manuel Lorenzo, Blanco González, Lorenzo

“…Revenues from oil exports are an important part of government budgets in Mexico. A time-series analysis is conducted using monthly data from 1990 to 2005 examining three different specifications to determine how international oil price fluctuations and government income generated from oil exports influence fiscal policy in Mexico. …”
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Measuring the importance of oil-related revenues in total fiscal income for Mexico por Reyes Loya, Manuel Lorenzo, Blanco González, Lorenzo

“…Revenues from oil exports are an important part of government budgets in Mexico. A time-series analysis is conducted using monthly data from 1990 to 2005 examining three different specifications to determine how international oil price fluctuations and government income generated from oil exports influence fiscal policy in Mexico. …”
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Estudio comparativo entre una prueba rápida y RT-PCR tiempo real en el diagnóstico de influenza AH1N1 2009 por Castro Cárdenas, Luz Araceli, Llaca Díaz, Jorge Martín, Pérez Chávez, Fernando, Gómez Espinel, Irene A., Flores Aréchiga, Amador

“…Confidence intervals to 95, were calculated to all of the above data. Discussion. The test QuickVue Influenza A+B is a rapid, simple test, with lower cost than real-time RT-PCR useful for identifying the type of virus outbreaks of influenza in a given population. …”
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"SOME CONSTRAINTS ON ENGLISH-SPANISH CODE-SWITCHING" por Henderson, Doris

“…However, a detailed study would require much more time and, perhaps, a team effort of several investigators doing the field work. …”
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On aerodynamics of baseball pitches: reconstruction of spinning throws, and a lift force model for the knuckleball por Aguirre López, Mario Alberto

“…Regarding spinning pitches, analyses mentioned above lead us to assume that only three points (ball position in function of time) for a trajectory to reconstruct all it. This is applied in an algorithm based on shooting method, which obtains the initial conditions of synthetic trajectories with a high accuracy in a low-time.…”
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On aerodynamics of baseball pitches: reconstruction of spinning throws, and a lift force model for the knuckleball por Aguirre López, Mario Alberto

“…Regarding spinning pitches, analyses mentioned above lead us to assume that only three points (ball position in function of time) for a trajectory to reconstruct all it. This is applied in an algorithm based on shooting method, which obtains the initial conditions of synthetic trajectories with a high accuracy in a low-time.…”
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Association between bullying and major depressive disorder in a psychiatric consultation por Perales Blum, Laurencia, Juárez Treviño, Myrthala, Capetillo Ventura, Nelly Cecilia, Rodríguez Gutiérrez, G., Valdés Adamchik, Miguel, Treviño Treviño, J. O., Cáceres Vargas, Mario Hernando

“…A total of 147 clinical patients were studied (73 women and 74 men). Data were captured in excel and the Statistical Package for the Social Sciences (SPSS) program was used for statistical analysis. …”
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Dinámica no lineal estocástica del mercado cambiario mexicano (Non-linear stochastic dynamic of the Mexican exchange rate market) por Cortez Alejandro, Klender Aimer, Rodríguez García, Martha del Pilar, Wong Boren, Adrián

“…As a starting point we begin analyzing the temporary structure of the variance, and later we look for a time serie model that best fits the data. In order to detect the non-linear dynamic of the time series, we use the BDS test. …”
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Use of Electrochemical Noise for the Study of Corrosion by Passivated CUSTOM 450 and AM 350 Stainless Steels por Almeraya Calderón, Facundo, Villegas Tovar, José Miguel, Lara Banda, María del Refugio, Jáquez Muñoz, Jesús Manuel, Estupiñan López, Francisco Humberto, Gaona Tiburcio, Citlalli

“…The potentiodynamic polychromatic curves employed electrochemical techniques and noise (EN) based on the ASTM-G5 and G199 standards. Two methods of data analysis were applied concerning EN: the domain of frequencies (power spectral density, PSD) and the time–frequency domain (Hilbert-Huang Transform). …”
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Evaluación de la calidad del agua de tres ríos de la subcuenca del “Río Limón” en el estado de Nuevo León por Ríos Saucedo, Julio César

“…Parameters to evaluate consists on several chemical constituents (Electric conductivity, pH, Calcium, Magnesium, Sulfates, Nitrates, Carbonates, Bicarbonates, Sodium, and Cloride), bacteriological constituents (total coliform bacteria and total fecal bacteria), and hydrodinamic parameters (discharge). Data was statistically analyzed using a variance analysis were the main sources of variation studied were a) time, b) rivers, and c) location of the station with reference to the city of Linares. …”
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Evaluación de la calidad del agua de tres ríos de la subcuenca del “Río Limón” en el estado de Nuevo León por Ríos Saucedo, Julio César

“…Parameters to evaluate consists on several chemical constituents (Electric conductivity, pH, Calcium, Magnesium, Sulfates, Nitrates, Carbonates, Bicarbonates, Sodium, and Cloride), bacteriological constituents (total coliform bacteria and total fecal bacteria), and hydrodinamic parameters (discharge). Data was statistically analyzed using a variance analysis were the main sources of variation studied were a) time, b) rivers, and c) location of the station with reference to the city of Linares. …”
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Intangibles en la valoración financiera de proyectos de inversión (Intangibles in the financial valuation of investment projects) por Ceballos Hornero, David, Ramírez Sarrió, Dídac

“…This point of view is far, a priori, from a social and success perspective of the investment, because of the uncertainty only affects to data (time, money and interest rate). In this paper we analyse a way to incorporate socioeconomic variables with influence on success of the investment thank to contextual intangibles: environmental, social, economic and legal issues. …”
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