4,631 research outputs found
Radiocinema : Programa de radio cultural diseñado para una estación comercial / D.A. Castillo Silva.
No full textReporte de Investigación para Lic. en Ciencias de la Información y Comunicación, Universidad de MonterreyPropuesta de programa radiofónico que brinde cultura, al mismo tiempo que proporcione información acerca de cine de una manera entretenida. Radiocinema es un programa cultural adecuado a una estación comercial en Parral, Chihuahua
Design metrics for evaluating the propulsive efficiency of future ships
No full textThere is an increasing need for the ship design process to take account of environmental issues such as the emission of greenhouse gases and the likely extension of a carbon dioxide charging mechanism to international shipping. These issues, together with the need for economic viability, provide further incentives to improve the efficiency of propulsion of ships. The main components of powering are firstly reviewed. Individual components and other power saving devices are identified which should contribute to improvements in the overall efficiency of propulsion. Suitable design metrics and procedures, taking into account economic and environmental factors, are recommended for the design of future ships
Brief note: some observations on oscillating tangential forces and wear in general plane contacts
No full textFor general plane contact of elastically similar materials, including cases where there are multiple regions of contact, general properties of the partial slip solution for conditions of constant normal force and monotonically increasing shearing force have been found recently by the first author. An extension is given here to cover the unloading and cyclic loading cases. Further, it is shown that, if the tangential load varies between two fixed limits, the region of stick does not change, even if relative microslip causes wear, changing continuously the profile of the indenter. The contact area will change, but wear will not enter the original region of adhesion. The theoretical limit to which wear will eventually, asymptotically proceed is established, viz. almost complete contact over what is the initial stick zone, although it may, in practice, take a long time to reach this state
The Hirsch spectrum: a novel tool for analysing scientific journals
No full textThis paper introduces the Hirsch spectrum (h-spectrum) for analyzing the academic reputation of a scientific journal. h-Spectrum is a novel tool based on the Hirsch (h) index. It is easy to construct: considering a specific journal in a specific interval of time, h-spectrum is defined as the distribution representing the h-indexes associated to the authors of the journal articles. This tool allows defining a reference profile of the typical author of a journal, compare different journals within the same scientific field, and provide a rough indication of prestige/reputation of a journal in the scientific community. h-Spectrum can be associated to every journal. Ten specific journals in the Quality Engineering/Quality Management field are analyzed so as to preliminarily investigate the h-spectrum characteristic
The reform of mechanisms for foreign exchange allocation : theory and lessons from sub-Saharan Africa
No full textAdministrative exchange allocation has been common in developing countries, especially in sub-Saharan Africa. Steps to dismantle or modify these control mechanisms have been carried out through traditional schemes. The authors draw lessons from sub-Saharan Africa's historical experience useful both to African former socialist economies. Exchange regime reform should be given highest priority for its role in reducing anti-export bias. Although many sub-Saharan countries have attempted to reform their allocation mechanisms, only a few have made the transition to market allocation (virtually convertible currency, at least on the current account.) Failure to do so is the major shortcoming of most adjustment packages. Both gradual and rapid approaches have succeeded. On purely economic grounds (given the problems of such intermediate steps as auctions), speed is preferable but it is not always politically or institutionally feasible. The transition must be accompanied by a coherent set of fiscal and monetary policies and a willingness to allow the exchange rate to seek a true market-clearing level. Some lessons regarding the specific mechanisms, discussed in approximate order of their proximity to convertibility, are as follows. The most rudimentary transition mechanism is the own-funds scheme, which is no more than a beginning of reform. Own-funds schemes should be accompanied by liberalization of the rules governing exports, or illegal exports and the black market premium may increase. Export retention schemes can minimize the adverse effects on exporters of foreign exchange shortages, reduce the implicit export tax, and fund a legal private exchange market. But the retained funds must be saleable, the retention rates substantial, and traditional exports must be included to adequately fund the legal private exchange market. Open general licensing (OGL) and similar schemes can be a useful intermediate step in liberalizing import and exchange allocation regimes. But in practice the benefits are limited by two features. First, consumer goods competing with local production, whose imports were restricted the most, have usually been excluded, at least initially. Moreover, OGL has no endogenous price-setting mechanism for the exchange rate. The OGL rate should generally be connected to, but lower than, the parallel rate. An auction incorporates a pricing mechanism, which is an important advantage. But the pricing mechanism must be allowed to work, which has not always been the case. Auction rules should be clear (should not allow discretionary disqualification of bids, for example), should minimize participation costs, and allow wide participation. Marginal, rather than the more common Dutch, pricing system is preferred. The use of a reservation price may reduce volatility but may also impede the full disbursement of funds. The shortcomings of transitional schemes to dismantle or modify foreign exchange controls become more important the longer they are in place. A strong case can be made for avoiding delay in moving to full currency convertibility.Environmental Economics&Policies,Economic Theory&Research,Economic Stabilization,Access to Markets,Markets and Market Access
The description of Kabarda by D.A. Milutin in the context of the cauсasus version of russian orien-talism foundation
No full textThe paper pertains to the analysis of a manuscript authored by D.A. Milutin in the first half of the 19th century, regarding the region of Kabarda. This manuscript, hitherto unpublished in academic circles, has been the subject of our examination. Our endeavor was to uncover the utilization of orientalist clichés by the manuscript's author, in order to depict both the geographical delineations of this ethno-political entity and the ethnography, livelihood, societal structure, and customary legal norms of its inhabitants. A remarkable parallel can be observed between certain aspects of the manuscript and the ideas propounded by E. Said in his discourse on European Orientalism. The researcher drew a comparison between the political framework and traditions of the Kabardian people and those prevalent in Europe. Moreover, the researcher romanticized the region's historical past, employing the conceptof "reverse human progress," along with other typical methodologies embraced by Orientalist thinkers of that era. Concomitantly, D.A. Milutin provided detailed descriptions of the political, social, and everyday existence in Kabarda, thereby endowing the manuscript with an intrinsic value as an original historical and cultural resource for contemporary scholars. It is concluded that, similar to numerous analogous texts produced by Orientalist scholars, the significance of D.A. Milutin's man-uscript lies not in its political arguments concerning the military and economic dominion of the Russian Empire over the Caucasian peoples, or the imperative to extend colonial governance to these ethnic territorie
Elements of Ethnotaxonomy in Dhule and Nandurbar Districts (Maharashtra)
No full textDhule and Nandurbar districts of Maharashtra are mainly inhabited by tribals and rural folks. The author’s ethnobotanical and floristic forays in these districts brought out certain elements of ethnotaxonomy like ethnotaxonomic markers, classifications, principles of nomenclature and exomorphic features. The facts gathered indicated that the people in the area are fairly flooded with reckonable elements of ethnotaxonomy. And 22 ethnotaxonomic markers are identified. These are evaluated and discussed pertinently in this paper.-----------------------------------------------------------------------------------------------------Post Graduate Department of Botany, S.S.V.P.S’s L.K. P.R.Ghogrey Science College, Dhule-424005 (Maharashtra), India*Corresponding author, Email: [email protected] Cite This Article As: D.A. Patil. 2010. Elements of Ethnotaxonomy in Dhule and Nandurbar Districts (Maharashtra). J. Ecobiotechnol. 2(3): 18-25
Aanteekeningen omtrent de gevolgen van zware stormvloeden, tusschen 1500 en 1825 voorgekomen, voor de dijken en polders langs het Zuidwestelijk deel der Zuiderzee: samengesteld door den ingenieur van den Rijkswaterstaat D.A. van Heyst
No full textOverzicht van stormvloeden (1500 - 1825) die tot overstromingen langs de Zuiderzee geleid hebben. Aanleiding was de overstroming van 1916, en men wilde weten of deze stormvloed inderdaad uniek was
The dynamical influences of a hard transition zone on post-glacial uplifts and rotational signatures
No full textRecent investigations from laboratory and Monte-Carlo inversion of geophysical signatures have suggested that the transition zone of the mantle between 400 and 670 km depth may be stiffer than the lower and the upper mantle. By means of a five-layer viscoelastic spherical Earth model, we have calculated the displacement fields associated with post-glacial rebound, the induced polar motions, the temporal variations of the coefficients of the geopotential up to degree eight and the stress fields induced by deglaciation in the lithosphere and the upper mantle. Temporal variations of stress fields in the lithosphere reveal a non-monotonic behaviour due to the viscosity stratification. The results demonstrate the importance of the coming LAGEOS II geodetic satellite mission on constraining the rheological nature of the transition zone in the mantle. -from Author
Author Correction: Coupling electrochemical CO<sub>2</sub> conversion with CO<sub>2</sub> capture (Nature Catalysis, (2021), 4, 11, (952-958), 10.1038/s41929-021-00699-7)
No full textIn the version of this article, there were errors in Fig. 2a and d. In Fig. 2a, we have changed Cu2+ to Cu(0) in the revised version. While the two references cited in our paper used Cu2+ in their schematics,1,2 we believe that Cu(0) is the correct representation for the electrochemically mediated amine regeneration (EMAR)3. To be clear, the Cu metal anode is oxidized into cupric ions. The cupric ions then bind to the carbamate and displace the CO2 and form a copper–amine complex. The copper–amine complex is then reduced at the cathode where Cu metal is plated out. In Fig. 2d, we have changed the polarity of the cathode and anode in the revised version. A proton is released at the anode, while a hydroxide is released at the cathode. We have also simplified the quinone/hydroquinone chemistry in the revised version to be consistent with proton and hydroxide stoichiometry. The original and revised Fig. 2 images are shown below. The changes have been made to the html and PDF versions of the article.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Author correction to DOI 10.1038/s41929-021-00699-7ChemE/Transport Phenomen
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