Fibras textiles naturales sustentables y nuevos hábitos de consumo

Durante años el estancamiento manufacturero de la industria textil, trajo repercusiones tanto económicas como tecnológicas y ambas desembocaron en un daño ecológico voraz; la falta de nuevas propuestas y la necesidad de complacer a un mercado cada vez más grande, permitió la generación de empresas altamente lucrativas. El siguiente artículo tienen como finalidad proporcionar información que puede resultar importante para el consumidor al momento de elegir una prenda de vestir, ofreciendo información sobre diferentes tipos de fibras textiles sustentables, que cada vez más diseñadores gráficos, industriales, ingenieros, diseñadores textiles y particularmente, para diseñadores de moda y marcas reconocidas en el sector de la industria del vestido y calzado emplean, ya no como valor agregado, más bien como una consideración prioritaria para contribuir a la conservación del medio ambiente. Sin duda alguna, es el diseñador quien juega un papel muy importante en el uso y aplicación de los textiles sustentables, ya que la forma en la que aplique el proceso creativo en estrategias de investigación, influirá en los hábitos del consumidor, creando conciencia del ciclo de vida de una prenda de vestir, pues la gran mayoría de dichas prendas no se re-usa ni recicla y termina generando montones de basura

The Mean Deviation from the Median of the Dagum Distribution

The Dagum model is particularly suitable for the analysis of the distributions of economic quantities, such as income, assets and consumption. The purpose of this note is to derive the expression of the mean deviation from the median of the Dagum distribution to study the behavior of the scale and shape parameters in terms of absolute variability and in terms of relative variability

Augev Method and an Innovative Use of Vocal Spectroscopy in Evaluating and Monitoring the Rehabilitation Path of Subjects Showing Severe Communication Pathologies

A strongly connotative element of developmental disorders (DS) is the total or partial impairment of verbal communication and, more generally, of social interaction. The method of Vocal-verb self-management (Augev) is a systemic organicistic method able to intervene in problems regarding verbal, spoken and written language development successfully. This study intends to demonstrate that it is possible to objectify these progresses through a spectrographic examination of vocal signals, which detects voice phonetic-acoustic parameters. This survey allows an objective evaluation of how effective an educational-rehabilitation intervention is. This study was performed on a population of 40 subjects (34 males and 6 females) diagnosed with developmental disorders (DS), specifically with a diagnosis of the autism spectrum disorders according to the DSM-5. The 40 subjects were treated in “la Comunicazione” centers, whose headquarters are near Bari, Brindisi and Rome. The results demonstrate a statistical significance in a correlation among the observed variables: supervisory status, attention, general dynamic coordination, understanding and execution of orders, performing simple unshielded rhythmic beats, word rhythm, oral praxies, phono-articulatory praxies, pronunciation of vowels, execution of graphemes, visual perception, acoustic perception, proprioceptive sensitivity, selective attention, short-term memory, segmental coordination, performance of simple rhythmic beatings, word rhythm, voice setting, intonation of sounds within a fifth, vowel pronunciation, consonant pronunciation, graphematic decoding, syllabic decoding, pronunciation of caudate syllables, coding of final syllable consonant, lexical decoding, phoneme-grapheme conversion, homographic grapheme decoding, homogeneous grapheme decoding, graphic stroke

Fatores de virulência de Escherichia coli uropatogênicas provenientes de um Hospital Universitário em Ribeirão Preto, São Paulo, Brasil

The aim of the study was to determine the occurrence of virulence genes expressing fimbriae, production of hemolysin, colicin and aerobactin among a hundred Escherichia coli isolates obtained from in-and outpatients of a tertiary-care teaching hospital, between July and August 2000, showing clinical and laboratory signs of urinary tract infection (UTI). The presence of genes (pap, afa, sfa) for fimbriae expression was assayed using specific primers in a polymerase chain reaction. Among the isolates studied, the prevalence of the virulence factors was 96.0%, 76.0%, 24.0%, for hemolysin, aerobactin and colicin, respectively; the prevalence of genes coding for fimbrial adhesive systems was 32.0%, 19.0% and 11.0% for pap, sfa and afa respectively. The strains isolated from the outpatients displayed a greater number of virulence factors compared to those from hospitalized subjects, emphasizing the difference between these two kinds of patients.O objetivo do trabalho foi determinar a ocorrência de fatores de virulência, tais como, a expressão de fímbrias, produção de hemolisina, colicina e aerobactina em 100 cepas de Escherichia coli isoladas de pacientes ambulatoriais e hospitalizados de um hospital universitário de nível de atendimento terciário, entre os meses de julho e agosto de 2000, que apresentavam sinais clínicos e laboratoriais de infecção do trato urinário (ITU). Foram pesquisados os genes pap, afa e sfa responsáveis pela expressão de fímbrias através da técnica de PCR. A freqüência dos fatores de virulência entre as cepas estudadas foi de 96,0%, 76,0% e 24,0% para hemolisina, aerobactina e colicina respectivamente, e a prevalência dos genes para os sistemas de adesinas fimbriais foi de 32,0%, 19,0% e 11,0% para os genes pap, sfa e afa respectivamente. As cepas isoladas dos pacientes ambulatoriais exibiram um número maior de fatores de virulência quando comparadas com aquelas provenientes de indivíduos hospitalizados

Mean Difference of Truncated Normal Distribution

The purpose of this paper is to broaden the knowledge of mean difference and, in particular, of an important distribution model known as truncated normal distribution, which is widely used in applied sciences and economics. In this work, we obtained the general formula of mean difference, which is not yet reported in literature, for the aforementioned distribution model and also for particular truncated cases

GUÍA DEL EVALUACIÓN DEL APRENDIZAJE: ESTADÍSTICA

GUÍA DE EVALUACIÓN DEL APRENDIZAJ

ESTADÍSTICA

GUÍA PEDAGÓGIC

Job involvement and valuation of job resources: The mediating effect of satisfaction with job resources

Purpose: This paper has two objectives: the first, to analyse the relationship between job involvement and valuation of job resources; the second, to analyse the mediating effect of satisfaction with job resources on the relationship between job involvement and employees valuation of job resources. Design/methodology/approach: The survey was used as a research methodology. The participants correspond to a sample of 225 employees in Spain. Findings: The hypotheses are positively contrasted. Job involvement is positively related to valuation of job resources, and satisfaction with job resources mediates the relationship between job involvement and valuation of job resources. The results of this work indicate that the most involved employees give greater importance to job resources. Originality/value: This paper evidences the relationship between job involvement and the importance that employees attribute to job resources. Therefore, this research advances the job demands-resources model, as it suggests that employees high involvement in their job leads to greater involvement of resources, which is related to employees psychological contract

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