Search results for "Lambert"
showing 10 items of 17 documents
A summary of expressions for central performance parameters of high efficiency solar cell concepts
2019
This work reviews expressions for central performance parameters of various types of PV-concepts when operating at the radiative limit. Some new expressions not published elsewhere are also included. The performance parameters include the short circuit current density, the open circuit voltage, the maximum power density and the optimal voltage. The cell concepts include single junction cells, cells optically coupled to up- and down-converters, intermediate band solar cells and a couple of implementations of multijunction devices. The Lambert W function is used to express the maximum power density.
Five years experience on 3,4-diaminopyridine phosphate in Lambert-Eaton syndrome: Case reports
2017
Abstract Rationale: To report our experience on 7 patients (4 males and 3 females), affected by nonparaneoplastic Lambert–Eaton myasthenic syndrome, treated with 3,4-diaminopyridine phosphate (3,4-DAPP) either alone or in combination with other immunosuppressants or steroids. Patient concerns: Patients have been evaluated at specific timepoints (ie, baseline and last 5 year follow-up), with neurological examination, autoantibodies against presynaptic voltage-gated Cav2.1 (P/Q type) calcium ion channel (VGCC) dosage, neurophysiological evaluation focusing on the increased amplitude of the compound muscle action potential (cMAP) after maximum voluntary effort, quantitative myasthenia gravis (…
Una ética de la excelencia: Cayetana de la Cerda y la circulación de Madame de Lambert en España
2015
En este artículo se sintetizan las líneas maestras del pensamiento de Anne-Thérèse Marguenat, marquesa de Lambert (1647-1733) y se profundiza en el eco que su obra tuvo en España, aclarando algunos episodios poco conocidos y arrojando luz sobre el contexto en el que se realizó y publicó finalmente la versión castellana de sus ensayos y sobre la personalidad intelectual y circunstancias sociales de su traductora, Cayetana de la Cerda y Vera, condesa de Lalaing (1755-1798). Se pretende así analizar las prácticas de transferencia y mediación cultural, interrogándonos sobre los significados con que su pensamiento y su figura pudieron ser investidos por parte de los sujetos implicados en su lect…
Materiality and compositorial errors of a poetical incunabulum: the contribution of textual criticism
2019
L’anàlisi material dels testimonis d’una obra literària forma part de la fase de recensio en un procés de crítica textual, que ha d’anar més enllà de la mera descripció del continent. Cal atendre a la informació que donen aquestes característiques quant als continguts, quant al procés de transmissió dels textos, perquè aquestes dades tindran funcionalitat ecdòtica. Així, aquest treball estudia la materialitat i els errors d’un incunable poètic valencià, que és el primer d’una trilogía d’impresos dedicats a la Immaculada Concepció i patrocinats per Ferran Dies. The material analysis of the witnesses of a literary work is part of the phase of recension in a process of textual criticism, which…
La scuola al servizio della democrazia: i princìpi ispiratori di John Dewey per l’interpretazione di Lamberto Borghi
2021
John Dewey ha dedicato molta attenzione al rapporto scuola-società, affermando come il modo di insegnare e di educare potesse favorire la creazione di una democrazia intesa non come un mero sistema politico, bensì come un a way of life. In tal senso, il contributo cha lo scopo di evidenziare come l’idea di Dewey di una scuola a servizio della democrazia si sia diffusa anche in Italia grazie al contributo di Lamberto Borghi. Quest’ultimo, nell’immediato secondo dopoguerra e attraverso l'influenza del pensiero di John Dewey, teorizzò infatti un’educazione volta allo sviluppo di una personalità comunitaria in grado di vivere in un contesto democratico nel pieno rispetto di ogni forma di divers…
Oratio pro Bertucio Lamberto, Canonico Concordiensi, liberalium artium insigna suscipiente.
1494
About some difficulties with the functional forms of Lorenz curves
2022
We study to what extent some functional form assumption on the Lorenz curve are amenable to calculating headcount poverty, or poverty threshold, the key concept to determine a poverty index. The difficulties in calculating it have been underestimated. We must choose some functional forms for the Lorenz concentration curve. We examine three families of one-parameter functional forms to estimate Lorenz curves: power (elementary and Pareto), exponential (elementary and Gupta) and fractional (Rohde). Computing these numerical functions may be difficult and impose some restrictions on their domain of definition, may impose to use some numerical approximation methods. The elementary power and exp…
Beyond Viner: Smoothed Cost Curves and Co-Detetermination of Output and Production Capacity
2017
We address two problems of traditional cost functions: the discontinuity caused by the production capacity (the marginal cost abruptly becomes infinite when production capacity is reached) and the production capacity is artificially exogenous. So, we introduce a smoothed form of marginal cost function. It progressively tends to infinity when it approaches to the production capacity. Then, we prove that it is perfectly possible to determine directly output, fixed costs and production capacity simultaneously, even if this could lead to a system of equations that is not so elementary to solve because it includes a Lambert function. We also show that the smoothed cost function prevails in both …
Beer-Lambert law for optical tissue diagnostics: current state of the art and the main limitations.
2021
Abstract. Significance: Beer–Lambert law (BLL) is a widely used tool for contact and remote determination of absorber concentration in various media, including living tissues. Originally proposed in the 18th century as a simple exponential expression, it has survived numerous modifications and updates. The basic assumptions of this law may not be fulfilled in real measurement conditions. This can lead to mistaken or misinterpreted results. In particular, the effects to be additionally taken into account in the tissue measurements include anisotropy, scattering, fluorescence, chemical equilibria, interference, dichroism, spectral bandwidth disagreements, stray radiation, and instrumental eff…
Towards a new conception of metaphysics: Lambert’s criticism on Wolff’s mathematical method
2017
This paper discusses Lambert’s criticism of Wolff’s mathematical method. I take this criticism to consist of two main aspects. Lambert tries on the one hand to revise Wolff’s idea of fundamental concepts by providing what he takes to be a more profound theory of concepts. On the other hand, Lambert introduces postulates that regulate the connection between fundamental concepts and account for their application to experience. Both transformations allow Lambert to put forward a novel approach to metaphysics which is essentially oriented towards experience.