161,820 research outputs found
Pauli letter collection: letter to Wolfgang Pauli
No full textHeckmann explains why he didn't cite Friedman (Z. Phys. 21, 326, 1924) in his work
The molecular profile of Paratrajectura longcementglandatus Amin, Heckmann et Ali, 2018 (Acanthocephala: Transvenidae) from percid fishes in the marine waters of Iran and Iraq
No full textParatrajectura longcementglandatus Amin, Heckmann et Ali, 2018 (Transvenidae) was recently described from two species of percid fishes collected from the marine territorial waters of Iraq and Iran in the Persian Gulf. The genus Paratrajectura Amin, Heckmann et Ali, 2018 is a close relative to transvenid genera TrajecturaPichelin et Crib, 2001 and TransvenaPichelin et Crib, 2001. Morphologically, Paratrajectura is characterised by having apical proboscis cone, long, tubular cement glands, short lemnisci, prominent roots on all proboscis hooks, subterminal female gonopore, and males with long pre-equatorial testes. Molecular studies of P. longcementglandatus using 18S rDNA and cox1 genes compared with available data of members of other families of Echinorhynchida showed that P. longcementglandatus is grouped with species of the genus Transvena forming a clade within the family Transvenidae
Walter Heckmann e o Museu das Conchas - Guaratuba (PR)
No full textRealizaçao : UFPRTVApresentaçao : Sérgio BrandaoEntrevistado : Walter Heckmann, malacólogo e fundador do Museu das Concha
Walter Heckmann e o Museu das Conchas - Guaratuba (PR)
No full textRealizaçao : UFPRTVApresentaçao : Sérgio BrandaoEntrevistado : Walter Heckmann, malacólogo e fundador do Museu das Concha
Un estudio de la demanda por bienes de origen ilegal. El caso de los celulares en Córdoba, en 2016
No full textFil: Heckmann, Gerardo O. Universidad Nacional de Córdoba. Facultad de Ciencias Económicas; Argentina.Este trabajo busca complementar el análisis económico de la delincuencia basado en la oferta de ofensas mediante un estudio de la demanda de productos robados, en particular, de celulares. Del análisis teórico de este mercado secundario surgen numerosos interrogantes: ¿Por qué un consumidor compra bienes de origen ilegal, particularmente celulares robados? ¿Qué factores explican esta decisión? ¿Qué atributos tienen en cuenta al decidir? Para generar la información que permita responder a estas preguntas se diseñaron e implementaron dos encuestas por muestreo en Barrio Alto Alberdi, de la Ciudad de Córdoba, Argentina, en un contexto de adversa evolución de la tasa de delincuencia. Toda la información recogida se analizó en tres niveles: exploratorio, experimental y confirmatorio, combinando diversas técnicas estadísticas multivariantes, cualitativas y cuantitativas, que permitieron estimar un
modelo que permite inferir la probabilidad de que un individuo pertenezca al grupo propenso a la compra ilegal o no; la importancia relativa que asigna a los atributos del bien demandado, la función de utilidad del mercado y las cuotas de ese mercado que lograrían bienes que presenten atributos ilegales.
Se logra demostrar la existencia de este mercado secundario e inferir su impacto, caracterizar el perfil de esos demandantes y validar hipótesis de comportamiento de los consumidores. El trabajo también hace un aporte metodológico al estudio de estas demandas e identifica nuevas políticas de mitigación del robo de celulares, como contribución a la sociedad.Fil: Heckmann, Gerardo O. Universidad Nacional de Córdoba. Facultad de Ciencias Económicas; Argentina.Economía, Econometrí
Figs 37–42 in Sem Study Of Hooks In The Acanthocephala With Emphasis On Structural-Functional Relationships
No full textFigs 37–42. SEM of proboscis and hooksPublished as part of Amin, O. M. & Heckmann, R. A., 2022, Sem Study Of Hooks In The Acanthocephala With Emphasis On Structural-Functional Relationships, pp. 265-284 in Zoodiversity 56 (4) on page 275, DOI: 10.15407/zoo2022.04.265, http://zenodo.org/record/717555
Figs 67–72 in Sem Study Of Hooks In The Acanthocephala With Emphasis On Structural-Functional Relationships
No full textFigs 67–72. SEM of proboscis and hooksPublished as part of <i>Amin, O. M. & Heckmann, R. A., 2022, Sem Study Of Hooks In The Acanthocephala With Emphasis On Structural-Functional Relationships, pp. 265-284 in Zoodiversity 56 (4)</i> on page 277, DOI: 10.15407/zoo2022.04.265, <a href="http://zenodo.org/record/7175553">http://zenodo.org/record/7175553</a>
Figs 115–120 in Sem Study Of Hooks In The Acanthocephala With Emphasis On Structural-Functional Relationships
No full textFigs 115–120. Proboscis and hooks of Rhadinorhynchus hiansi (cont.) (figsPublished as part of <i>Amin, O. M. & Heckmann, R. A., 2022, Sem Study Of Hooks In The Acanthocephala With Emphasis On Structural-Functional Relationships, pp. 265-284 in Zoodiversity 56 (4)</i> on page 281, DOI: 10.15407/zoo2022.04.265, <a href="http://zenodo.org/record/7175553">http://zenodo.org/record/7175553</a>
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
- …
