Volatility and stock market direction: a study on emerging markets.

Volatility indices, such VIX, can be used for determining stock market direction. In this paper, we analyze the relationship between changes in the VIX direction and changes in the turning point of S&P 500 and the MSCI Latin-America Emerging Market index, in order to see whether they anticipate the changes. Also, the volatility of emerging markets measured by standard deviation and their relationship with the stock market movements within this market are calculated, since the greater the value of the volatility, the greater the likelihood of a rise or fall. In order to locate the turning point and the upward and downward phases of the cycles, empirical methods are applied and are characterized by using a set of decision rules that reflect the practical experience gained by analysts. Our conclusions include: Turning points, or peaks and troughs, in the VIX are coincident with peaks and troughs in the opposite direction for the S&P 500 index and in emerging markets

Can observed randomness be certified to be fully intrinsic?

Randomness comes in two qualitatively different forms. Apparent randomness can result both from ignorance or lack of control of degrees of freedom in the system. In contrast, intrinsic randomness should not be ascribable to any such cause. While classical systems only possess the first kind of randomness, quantum systems are believed to exhibit some intrinsic randomness. In general, any observed random process includes both forms of randomness. In this work, we provide quantum processes in which all the observed randomness is fully intrinsic. These results are derived under minimal assumptions: the validity of the no-signalling principle and an arbitrary (but not absolute) lack of freedom of choice. The observed randomness tends to a perfect random bit when increasing the number of parties, thus defining an explicit process attaining full randomness amplification.Comment: 4 pages + appendice

Indicadores técnicos para el seguimiento de la tendencia

Con el presente trabajo, pretendemos analizar la utilidad que tiene la determinación de la tendencia del mercado cuando se opera mediante el enfoque del análisis técnico, al permitimos seleccionar las técnicas más adecuadas para cada situación. En primer lugar, se analizarán los aspectos generales sobre los indicadores que permiten al inversor saber cuándo un mercado está en tendencia y la fuerza de la misma. Seguidamente, procederemos con su formulación matemática, la interpretación, así como su aplicación práctica, mediante ejemplos reales, de los indicadores más utilizados por el mercado. Entre ellos se incluyen los Indicadores de Movimiento Direccional (“+DI”, “-DI" y “ADX”), el Filtro Vertical Horizontal o “VHF”, el Indicador de Zigzag, así como el coeficiente r-cuadrado y la pendiente de la línea de regresión. Finalmente estableceremos las conclusiones a las que hemos llegado

Effect of Site Specific Weather Conditions on the Energy Consumption of a High Temperature Continuous Flow Corn Dryer

The estimation of drying energy consumption is important for grain elevators and the grain processing industry in order to compute the drying cost and also for properly planning the energy supply during the drying season. It is also important for making energy policies related to agriculture. Locations with different weather should have different drying performances but this effect was not sufficiently studied in previous research. The main goal of this study was to determine the energy requirement for drying yellow dent corn with a continuous flow high temperature dryer for ten locations in Argentina with different weather conditions. The study was carried out using historical weather data of ten locations scattered through the corn producing region of Argentina, and a mathematical model to simulate the drying conditions of corn from 17 and 20% initial moisture content (m.c.i) to 15% final moisture content (m.c.f). The specific total energy consumption for drying corn from 17% m.c.i was 8207 kJ per kg of water evaporated (kgw-1) and for 20% m.c.i was 5535 kJ kgw-1 on average across locations, resulting in an average drying efficiency of 31% for 17% m.c.i and 46% for 20% m.c.i. The specific convective heat losses to the ambient under the average weather condition of the locations considered were 196 kJ kgw-1 for 17% m.c.i, and 136 kJ kgw-1 for 20% m.c.i, less than 3% of the total drying energy. The ambient temperature affected the total drying energy, which, in general, decreased about 1.25% per each ° C of ambient temperature increase. Drying energy efficiency could be improved by selecting ambient temperature conditions

Prácticas de control de calidad : laboratorio IX en ingeniería metalúrgica

1 archivo PDF (65 páginas)Manual de practicas de laboratorio para alumnos de los últimos semestres de ingeniería metalúrgica. PALABRAS CLAVE: Metallurgy. Laboratory manual

First experiences about working with data from climate models: behavior in the past of the position and intensity of Azores anti-cyclone

Seminario técnico de las becas de formación de posgraduados de Aemet celebrado el 21 de febrero de 2012. Proyecto: Formación en técnicas de diagnóstico y validación aplicadas a reanálisis e integraciones de modelos climático

Training in diagnosis and validation applied to reanalysis and integrations of climate models

Seminario técnico de las becas de formación de posgraduados de Aemet celebrado el 5 de junio de 201