122,048 research outputs found
La Soberania nacional
No full textCopia digital. España : Ministerio de Cultura. Subdirección General de Coordinación Bibliotecaria, d2024Rústica.En cub.: "Varios apuntes por los cuales queda resuelto el problema gubernativo o sea Nueva forma de gobierno única que puede hacer libre a las naciones"Registro de la Propiedad Intelectual: Ley de 1847: 11615; n. de solicitud de ingreso: "6087"; fecha y datos de ingreso: "4 Diciembre 68"; firma del depositante: "Placido Alejandre y Robledo
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Migration to the United States, remittances and regional development [Migraci�n a Estados Unidos, remesas y desarrollo regional]
No full textAn approach that considers migration as a component of the socio-economic functionality of human settlements is proposed in this essay as it is established by scholars working on regional analysis, in particular Alonso's theory of movement (1978, 1980); the works by Isard (1979, 1985), Isard and Anselin (1979), Greenwood (1985), Nijkamp and Poot (1986) and Cushing and Poot (2003). To support this proposal, the autors analyze remittances from the United States in its geographical context. Furthermore, the situation of migration and remittances on regional development using said approach is studied. To illustrate the importance that the regional analysis and geographical dimensions have on determining factors of migration, an example of general geographical distribution of remittances by states and municipalities in Mexico is used, as well as their impacts on their production
An FT-IR study of the reactivity of hydrocarbons on the acid sites of HZSM5 zeolite
No full textThe interaction of HZSM5 zeolite with n-butane, iso-butane, n-heptane, 1-butene, cis-2-butene, trans-2-butene, iso-butene, benzene and toluene in the temperature range 100-773 K has been investigated using FT-IR spectroscopy Low temperature experiments allowed to characterise hydrogen-bonded species of all adsorbates both with the internal bridging OHs of HZSM5 and with the external terminal OHs. H-bonds apparently involve C-C sigma-type orbitals of alkanes and C=C pi-type orbitals of alkenes and aromatics. Evidence is provided for a partial steric hindrance in the interaction of benzene and toluene with the internal OHs. Hydrogen bondings with alkanes are precursors for dehydrogenation with the formation of carbenium ions that go fast towards the tert-butyl-sec-butyl equilibrium, giving rise to skeletal isomerization and cracking. Poly-isobutene like species are formed at the surface by high-temperature interaction with both alkanes and alkenes. Isobutene is a likely precursor for such species, that are intermediates of coking and can contribute also to cracking to light olefins. H-bonded species are also thought to be intermediates for the formation of the so-called 'sigma-bonded' intermediate of electrophilic aromatic substitution, giving rise to toluene dealkylation and/or dismutation, obtained in the IR cell. (C) 2000 Elsevier Science B.V. All rights reserved
Orthogonal Polarization Spectral Imaging (OPS) Measurements of Microcirculatory Changes in Term Newborns with Suspected Infection
No full textThe early diagnosis of neonatal infection remains a challenge. Recent studies using Optical Polarized Spectral (OPS) imaging techniques, have reported microcirculatory alterations in adult patients with severe sepsis and septic shock. The objective of this study was to compare microcirculatory flow and vascular density between healthy controls and sick newborns with neonatal infection.
OPS images were obtained prospectively from the vascular bed of ear conch and upper arm of 47 newborns on their 1st, 2nd and 3rd day of life. Infection was defined as IL-6 >50pg /mL and CRP >0,5 mg /dL. OPS sequences were analyzed off-line, blinded to clinical status of the infant with a semi-quantitative method based on the works of Sakr (46) and Boerma (47). Flow was examined differentiating between no flow, intermittent, sluggish and continuous flow. All vessels that did not have a continuous flow were classified as pathologic and their percentage was determined. Vascular density of the sequences was also calculated.
Sixteen infants developed an infection. Most episodes of infection were not severe. Microcirculatory data was analyzed and tested with a non parametric test. The images obtained from ear showed a better image quality and an easier performan¬ce than those from upper arm in term newborns (infection: 32%, 95% confidence interval [19-44] vs. healthy: 10% [6-13]; p= 0.0003). Despite a tendency to higher percent of impaired flow, the microcirculatory flow in arm did not reach a statistical significance when comparing both groups (infection: 19% [16-25] vs. healthy: 13% [10-11]; p= non significant). A trend to lower vascular density was observed in the sequences obtained from ear in the infected group but not in those obtained from arm. Both places did not show a statistical difference.
It can be concluded that ear conch is a better site to study the microcirculation in term newborns than the arm. In the ear conch even in infants with mild to moderate signs of infection, microcirculatory flow is impaired in a large proportion of vessels early in the course of disease. Since these changes can be easily recognized at the external ear, an on-line evaluation of microcirculatory flow could be an important screening tool for infection in the future
A FT-IR study of the adsorption of indole, carbazole, benzothiophene, dibenzothiophene and 4,6-dibenzothiophene over solid adsorbents and catalysts
No full textThe adsorption of benzothiophene (BT), dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (DMDBT), dibenzofuran (DBF). indole (IND) and carbazole (CARB) on alumina, zirconia and magnesia has been studied by IR spectroscopy. The main adsorption process is due to adsorption on Lewis sites or on acid-base pairs. On alumina the adsorption is strongest, desorption being not obtained above 723 K. BT also undergoes a transformation with likely the heteroaromatic ring opening. Adsorption of 4,6-DBT is definitely limited in extent likely due to steric hindrance. The N-containing compounds IND and CARB are adsorbed dissociatively with breaking of the NH bond. (C) 2002 Elsevier Science B.V. All rights reserved
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