1,047 research outputs found
Letter from Carl Hayden to Robert Fechner, Emergency Conservation Work
No full textLetter from Carl Hayden to Robert Fechner on building a Union Chapel in the Grand Canyon
Letter from Robert Fechner, Emergency Conservation Work to Carl Hayden
No full textLetter from Robert Fechner to Carl Hayden on building a Union Chapel in the Grand Canyon
Van Zwet ordering for Fechner asymmetry
No full textThere are several procedures to construct a skewed distribution. One of these procedures splits the value of a parameter of scale for the two halfs of a symmetric distribution. Fechner proposed this procedure in his famous book Kollektivmaßlehre (1897), p. 295ff.. A similar proposal comes from Fernandez et al. (1995). We consider the very general approach from Arellano-Valle et al. (2005) of splitting a scale parameter and show that this technique of generating skewed distributions incorporates a well-defined parameter of skewness. It is well-defined in the sense that the parameter of skewness is compatible with the orderingSkewness,skewness to the right,skewness ordering,measure of skewness
Ocular dominance and subjective color perception: a study using the Fechner-Benham Visual Illusion
No full textPast research has demonstrated differences in visual processing between the dominant, or preferred eye, and the non-dominant, or less preferred eye. Researchers have accounted for these differences according to either physiological mechanisms (Porac & Coren, 1976) or behavioral preferences (Mapp, Ono, & Barbeito, 2003). The behavioral preferences account can be eliminated by examining how the eyes process visual illusions which are not expected to be influenced by prior experiences. One particular illusion, the Fechner-Benham Color Illusion, involves disks featuring black and white designs which, when rotated, produce the illusion of various subjective colors within the disks (Rosenblum, Anderson, & Purple, 1981). It was hypothesized that when viewing the Fechner-Benham Illusion with the nondominant eye, participants would exhibit longer latencies for the onset of color andwould report fewer colors compared to viewing with the dominant eye and with binocular vision. The underlying physiological mechanisms that are often regarded in subjective color perception are either described high in the visual information hierarchy, in a neurophysiological site, thus eliminating the retinal level (Rhollec & Vi�not, 1999;Robinson, 1896). Or, antagonistically, they are described as taking place within theretina in terms of an uneven distribution of photoreceptor cells (Jarvis, 1977).College Honors
Gustav Fechner e a Alma do Mundo
No full textOs professores Maxwell Lima Filho (UFAL) e Argus Romero Abreu de Morais (PNPD-UFSJ) organizaram um extenso volume de Filosofia da Biologia na Revista Helius (vol. 1, 2 e 3). Dentre os vários textos, saiu também o trabalho Gustav Fechner e a Alma do Mundo (endereço PhilPapers e na própria revista). Resumo: O presente trabalho pretende delinear a noção de Panpsiquismo no projeto filosófico de Gustav Theodor Fechner, especialmente a partir da análise do livro Über die Seelenfrage, de 1861...
A Lei de Fechner de Fernando Pessoa
No full textQuem diria: Fernando Pessoa também elaborou sua "Lei de Fechner", relativa a uma noção muito apreciada por ele: a de sensação. A analogia não parece ser à toa. Fechner estabelece uma análise matemático-psicológica da finitude humana, Pessoa se surpreende com o aspecto cada vez mais diminuto dela. O argumento é retraçado por Edgar Galan, em sua tese de doutorado ((Galan, Edgar. O sensacionismo vigente. Tese, UFSM, https://repositorio.ufsm.br/bitstream/handle/1/16551/TES_PPGLETRAS_2019_GALAN..
Fechnerian Scaling in R: The Package fechner
No full textFechnerian scaling is a procedure for constructing a metric on a set of objects (e.g., colors, symbols, X-ray films, or even statistical models) to represent dissimilarities among the objects "from the point of view" of a system (e.g., person, technical device, or even computational algorithm) "perceiving" these objects. This metric, called Fechnerian, is computed from a data matrix of pairwise discrimination probabilities or any other pairwise measure which can be interpreted as the degree with which two objects within the set are discriminated from each other. This paper presents the package fechner for performing Fechnerian scaling of object sets in R. We describe the functions of the package. Fechnerian scaling then is demonstrated on real and artificial data sets accompanying the package.
Vida e morte em Fechner e Freud
No full text As concepções de vida e morte de Freud e de Fechner se entrelaçam no momento em que o primeiro, em Além do princípio do prazer (1920), aclimata ao seu arcabouço teórico o princípio fechneriano da tendência à estabilidade, tomado a partir de então como um princípio mais geral ao qual se subordina o princípio da constância (ou princípio do Nirvana). O princípio de Fechner, contudo, é destacado por Freud de uma obra publicada em 1873, onde seu autor o formula como um princípio físico que se insere em uma concepção geral sobre a vida — sobre a sua origem e o seu desenvolvimento, mas também o seu ocaso —, concepção que difere sobremaneira da visão científica usual, à qual Freud se filia. No entanto, a visão sobre a vida e a morte dos dois autores conflui a partir do ponto em comum representado pelo princípio da tendência à estabilidade, que, em Fechner, leva os organismos progressivamente ao estado inorgânico e, em Freud, parece poder ser entendido como o fundamento da pulsão de morte, que naturalmente se esforça por alcançar este mesmo fim.Palavras-Chave: Freud. Fechner. Vida. Morte. Life and death in Fechner and FreudABSTRACTFreud's and Fechner's conceptions of life and death are intertwined when the former, in Beyond the Pleasure Principle (1920), acclimatizes to his theoretical framework the Fechnerian principle of the tendency to stability, taken from then on as a more general principle to which the constancy principle (or Nirvana principle) is subordinated. Fechner's principle, however, is highlighted by Freud from a work published in 1873, where its author formulates it as a physical principle that fits into a general conception of life — about its origin and its development, but also the its sunset — a conception that differs greatly from the usual scientific view, to which Freud adheres. However, the vision of life and death of the two authors converges from the common point represented by the principle of the tendency to stability, which, in Fechner, leads organisms progressively to an inorganic state and, in Freud, seems to be understood as the foundation of the death drive, which naturally strives to achieve this very end.Keywords: Freud. Fechner. Life. Death
An international study of non-parametric cost-of-living indexes derivable from the generalized Fechner-Thurstone direct utility function
No full textTypescript (photocopy).This dissertation presents several cost-of-living indexes derived from the generalized Fechner-Thurstone direct utility function for six Organization for Economic Cooperation and Development (OECD) countries: Belgium, Canada, West Germany, Greece, Switzerland, and the United Kingdom. Also presented are estimates of the own-price, income, and apparent substitution elasticities for eight commodity groups in these countries. Also discussed is the homogeneity in prices only and in prices and total expenditure of the marginal rates of substitution for these goods
The generalized Fechner-Thurstone direct utility function as an alternative basis for computation of true cost-of-living indexes
No full textTypescript (photocopy).This dissertation describes an investigation into an alternative approach to the computation of true cost-of-living indexes (TCLIs). Traditionally, computation of TCLIs has involved the estimation of utility function parameters as a precursor to computation of the indexes themselves. By presupposing a variable preference structure described the generalized Fechner-Thurstone (GFT) direct utility function, a nonparametric true cost-of-living index is obtained based on data generated from non-GFT preference specifications. These nonparametric indexes are then contrasted with their parametric (non-GFT) counterparts and an evaluation of the robustness of the nonparametric GFT-TCLIs is made with respect to the non-GFT-TCLIs
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