Structural Dynamics and Personal Agency in Housing Careers

The relative impacts of structural dynamics and personal agency on housing careers were assessed using a mixed methods approach. Secondary survey from the 2009 “American Housing Survey: National Microdata” (US Bureau of the Census) were supplemented with qualitative observations collected for this research from three professionals knowledgeable about housing issues as well as content analysis of journalistic writings about housing issues. Respondents’ housing moves were driven more by personal choice than by structural displacement. However, both structural displacement (as predicted by the Structural Inequalities paradigm) and personal choice, a dimension of agency (predicted with Becker and Tumin’s Human Capital theory), equally shaped, albeit in opposite ways, downward or upward housing mobility, respectively. Socio-economic resources that could facilitate personal agency had no impact. The professional interviewees agreed with some of these statistical findings but disagreed with others. Content analysis captured contemporary housing and gentrification issues in communities. This research extended the existing scholarship on housing quality by simultaneously accounting for structural dynamics and personal agency

Recursion Polynomials of Unfolded Sequences

Watermarking digital media is one of the important chal- lenges for information hiding. Not only the watermark must be resistant to noise and against attempts of modification, legitimate users should not be aware that it is embedded in the media. One of the techniques for watermarking is using an special variant of spread-spectrum tech- nique, called frequency hopping. It requires ensembles of periodic binary sequences with low off-peak autocorrelation and cross-correlation. Un- fortunately, they are quite rare and difficult to find. The small Kasami, Kamaletdinov, and Extended Rational Cycle constructions are versatile, because they can also be converted into Costas-like arrays for frequency hopping. We study the implementation of such ensembles using linear feedback shift registers. This permits an efficient generation of sequences and arrays in real time in FPGAs. Such an implementation requires minimal memory usage and permits dynamic updating of sequences or arrays. The aim of our work was to broaden current knowledge of sets of se- quences with low correlation studying their implementation using linear feedback shift registers. A remarkable feature of these families is their similarities in terms of implementation and it may open new way to characterize sequences with low correlation, making it easier to gener- ate them. It also validates some conjectures made by Moreno and Tirkel about arrays constructed using the method of composition.Supported by Consejería de Universidades e Investigación, Medio Ambiente y Política Social, Gobierno de Cantabria (ref. VP34

Familia y autoridad en la convivencia social entre los hombres y las mujeres

El artículo referencia y reflexiona brevemente sobre temática tan en voga. Sus autores quieren abrir espacios que favorezcan la reflexión y la crítica conducentes a crear conciencia y posicionamientos personales que favorezcan culturas de paz, bienestar y favorecedoras del crecimiento de los miembros familiares más jóvenes; independientemente, de las formas de convivencia que estén vigentes en cada grupo familiar. Saber de manera consciente el lugar que cada uno ocupa en su familia ayuda en el desempeño de los "roles" y tareas que cada uno ha de asumir

Investigación sobre la aplicación del método de las Constelaciones Familiares de Bert Hellinger a la supervisión clínica

La parte empírica de este trabajo de investigación incluye los modelos de intervención sistémico y fenomenológico en el modelo de las constelaciones familiares, así como el modelo de las representaciones sociales. La investigación consiste en aplicar el método de las constelaciones familiares creado por Bert Hellinger a la supervisión clínica. Para ello, se estudiaron catorce casos, presentados por los psicoterapeutas participantes en la misma. Los resultados dan cuenta de los cambios de creencias, convicciones y grados de satisfacción de los participantes en las dinámicas de grupo. En definitiva, la investigación recoge los cambios en las representaciones sociales de los psicoterapeutas investigados, sobre sus problemas y relaciones laborales, como consecuencia de la aplicación del método de las constelaciones familiares. ABSTRAC The empiric part of this investigation work includes the systemic intervention models and phenomenologic in the pattern of the family constellations, as well as the pattern of the social representations. The investigation consists on applying the method of the family constellations created by Bert Hellinger to the clinical supervision. For it, fourteen cases were studied, presented by the participant psychotherapists in the same one. The results give bill of the changes of beliefs, convictions and degrees of the participants' satisfaction in the group dynamics. In definitive, the investigation picks up the changes in the social representations of the investigated psychotherapists, have more than enough its problems and labor relationships, as consequence of the application of the method of the family constellations

Metodología para la identificación de riesgos en sistemas de votación electrónica

En la actualidad, no existen parámetros de medida que permitan evaluar la bondad de un sistema de votación electrónica. Este artículo busca dar respuesta a esta necesidad, especificando un conjunto de elementos y criterios que brinden, por una parte, la posibilidad de evaluar la idoneidad de sistemas automatizados de votación, y, por otra, realizar comparaciones entre diversos sistemas. Para ello se ha partido de la propia experiencia, del análisis de la información publicada por los autores y promotores de otros sistemas de votación, así como de las opiniones manifestadas en distintos foros en los que los potenciales votantes han reflejado sus esperanzas, reticencias y temores. El resultado es la presentación organizada de características que permite identificar riesgos y evaluar funcionalidades en estos sistemas de votación. ABSTRACT. There are currently no measurement parameters to evaluate the benefits of an electronic voting system. This paper aims to address this need by specifying a set of elements and criteria achieving two goals: To assess the suitability of automated voting systems and to make comparisons among systems. Proposed criteria area based on the own expertise, along with the deep study of the information offered by authors and sponsors of a number of voting systems as well as the expressed opinions in forums where potential voters state their hopes, fears and reluctance to achieve this target. The result is the presentation of a body of characteristics to identify risks in electronic voting systems

The energy efficiency of the ergodic fading relay channel

In this paper, we address the energy ef ciency analysis of the relay channel under ergodic fading. The study considers full duplex and half duplex terminals. Since the capacity of general relay channels is unknown, we investigate achievable rates with decode and forward and capacity upper bounds with the cut-set bound. The maximum rate per energy and the slope of the spectral ef ciency with the energy per bit are computed to asses the impact of the duplexing capabilities, the resource allocation and the channel fading distribution.Postprint (published version

Generating gaussian pseudorandom noise with binary sequences

Gaussian random number generators attract a widespread interest due to their applications in several fields. Important requirements include easy implementation, tail accuracy, and, finally, a flat spectrum. In this work, we study the applicability of uniform pseudorandom binary generators in combination with the Central Limit Theorem to propose an easy to implement, efficient and flexible algorithm that leverages the properties of the pseudorandom binary generator used as an input, specially with respect to the correlation measure of higher order, to guarantee the quality of the generated samples. Our main result provides a relationship between the pseudorandomness of the input and the statistical moments of the output. We propose a design based on the combination of pseudonoise sequences commonly used on wireless communications with known hardware implementation, which can generate sequences with guaranteed statistical distribution properties sufficient for many real life applications and simple machinery. Initial computer simulations on this construction show promising results in the quality of the output and the computational resources in terms of required memory and complexity

Montaje y estandarización de un método para la determinación de hidrocarburos totales en matrices de agua por medio de las técnicas de infrarrojo y ultravioleta

En el siguiente trabajo se presenta la estandarización de un método para cuantificar hidrocarburos totales por la técnica de espectrofotometría de ultravioleta y la cualificación de los mismos por espectrometría de infrarrojo en matrices de agua. Se realizaron en la parte cuantitativa una curva de calibración con patrones de 0,5 mg/L siendo la menos concentrada hasta 10 mg/L siendo la más concentrada. Se determinaron parámetros estadísticos como linealidad, precisión y exactitud. Los cuales arrojaron valores aceptables de estas medidas, indicando que el método muestra concordancia entre los análisis realizados. Como estándar para los patrones se utilizó una mezcla de volúmenes equivalentes de hidrocarburos comerciales (ACPM, gasolina y kerosene), y como muestra real se usó una muestra de agua contaminada a una concentración conocida con la misma mezcla. En la parte cualitativa, se tomaron espectros de cada uno de los hidrocarburos comerciales ya mencionados, así como también, de la mezcla de los mismos, mostrando flexiones y tensiones en regiones específicas referentes, según la literatura, a enlaces presentes en hidrocarburos