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Wyszukujesz frazę "Alvarez, A" wg kryterium: Wszystkie pola

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Wyświetlanie 1-15 z 35
Tytuł:
A mixed integer nonlinear programming formulation for the problem of fitting positive exponential sums to empirical data
Autorzy:
Alvarez, A.
Lara, H.
Powiązania:
https://bibliotekanauki.pl/articles/254845.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
mixed integer nonlinear programming
regularization
nonlinear least squares
Opis:
In this work we deal with exponential sum models coming from data acquisition in the empirical sciences. We present a two step approach based on Tikhonov regularization and combinatorial optimization, to obtain stable parameter estimations, which fit the data. We develop properties of the solutions, based on their optimality conditions. Some numerical experiments are shown to illustrate our approach.
Źródło:
Opuscula Mathematica; 2011, 31, 4; 481-499
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some Remarks on Daily Life as a Concept, Context, and Content for New Quality Standard in Architectural Design and Urbanism
Autorzy:
Alvarez Isidro, Eva M.
Gómez Alfonso, Carlos J.
Powiązania:
https://bibliotekanauki.pl/articles/2191664.pdf
Data publikacji:
2021-12-22
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
Daily life
theory
practice
quality standards
architecture
Bernard Tschumi
Opis:
In this article, we point out the need to base the process of designing buildings and architectural and urban spaces on criteria that take into account the gender perspective. As a conceptual framework for developing such standards serves the methodology proposed by Bernard Tschumi,1 referring to “theory” as a “practice” and the concept of care and corresponding values derived from feminist ethics of care. In his text “Event-Cities 3” (Tschumi, 2005), Tschumi claims that “theory is a practice of concepts.” In the present text, this is particularly understood as a need and way to redefine/re-construct the content...
Źródło:
Loci Communes. International Journal of Studies on Spaces in Arts and Humanities, Anthropology and Architecture; 2021, 1, 1; 1-17
2720-6122
Pojawia się w:
Loci Communes. International Journal of Studies on Spaces in Arts and Humanities, Anthropology and Architecture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Weyl correspondence as a functional calculus
Autorzy:
Alvarez, Josefina
Powiązania:
https://bibliotekanauki.pl/articles/1207617.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
The aim of this paper is to use an abstract realization of the Weyl correspondence to define functions of pseudo-differential operators. We consider operators that form a self-adjoint Banach algebra. We construct on this algebra a functional calculus with respect to functions which are defined on the Euclidean space and have a finite number of derivatives.
Źródło:
Banach Center Publications; 2000, 53, 1; 79-88
0137-6934
Pojawia się w:
Banach Center Publications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A type of non-equivalent pseudogroups. Application to foliations
Autorzy:
Alvarez López, Jesús
Powiązania:
https://bibliotekanauki.pl/articles/1312196.pdf
Data publikacji:
1992
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
pseudogroup
foliation
holonomy
Opis:
A topological result for non-Hausdorff spaces is proved and used to obtain a non-equivalence theorem for pseudogroups of local transformations. This theorem is applied to the holonomy pseudogroup of foliations.
Źródło:
Annales Polonici Mathematici; 1991-1992, 56, 2; 187-194
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Una nueva mirada desde los límites de lo irreal: la fusión de categorías genéricas en la escritura de la imaginación de Juan Jacinto Muñoz Rengel
A New Perspective on the Limits of the Unreal: The Fusion of Generic Categories in the Writing of Imagination by Juan Jacinto Muñoz Rengel
Autorzy:
Álvarez Méndez, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/1048429.pdf
Data publikacji:
2018-07-09
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Muñoz Rengel
hybridisation
the fantastic
science fiction
horror
magical realism
Opis:
Juan Jacinto Muñoz Rengel (1974) is one of the greatest exponents of the hybridization of the fantastic with other non-mimetic modalities and with popular genre narratives. The mestizaje characterizes, through juxtaposition or fusion, much of his work, generating the ultimate significance of a broader scope. The fantastic is intertwined with adjacent categories, including science fiction, terror and magical realism. It is also commonly combined with the historical, detective, adventure or humorous narrative styles. He merges these diverse modes of invention by transgressing the rigid and normative molds with the aspiration of constructing new literary options. The dissolution of frontiers between the fantastic and other neighboring genres is also potentiated with frequent intertextual nods and suggestive tributes to the traditions of the unusual.
Źródło:
Studia Romanica Posnaniensia; 2018, 45, 2; 107-120
0137-2475
2084-4158
Pojawia się w:
Studia Romanica Posnaniensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Redes transfronterizas en un Atlántico dinámico: la inserción de la agencia portuguesa en América española a través de Canarias (1580–1640)
Autorzy:
Álvarez Santos, Javier Luis
Powiązania:
https://bibliotekanauki.pl/articles/2096235.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Canary Islands
Portugal
Hispanic Monarchy
America
Atlantic
cross-border
islas Canarias
Monarquía Hispánica
América
Atlántico
transfronterizo
Opis:
Esta investigación parte del análisis de las especificidades de las islas Canarias en su entorno socioeconómico atlántico y del estudio de las redes portuguesas transfronterizas durante el periodo de la agregación portuguesa a la Monarquía Hispánica con el objetivo de aportar, desde una perspectiva cisatlántica, una visión innovadora de las dinámicas transnacionales atlánticas, particularmente entre los territorios americanos e insulares del Atlántico Medio. Metodológicamente, parte este estudio del análisis de fuentes primarias insulares, fundamentalmente notariales, así como de las publicaciones que han abordado la agencia portuguesa en el mundo hispánico colonial.
This research analyses the specificities of the Canary Islands in the Atlantic socioeconomic environment and it studies the Portuguese cross-border networks during the period of the Portuguese aggregation to the Hispanic Monarchy with the aim of providing, from a cisatlantic perspective, an innovative vision of transnational Atlantic dynamics, particularly between the American and island territories of the Mid-Atlantic. Methodologically, this research uses primary sources from the Canary Islands, mainly notarial documents, as well as from publications that have examined the Portuguese agency in the Hispanic colonial world.
Źródło:
Anuario Latinoamericano – Ciencias Políticas y Relaciones Internacionales; 2020, 10; 203-218
2449-8483
2392-0343
Pojawia się w:
Anuario Latinoamericano – Ciencias Políticas y Relaciones Internacionales
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adjoint characterisations of unbounded weakly compact, weakly completely continuous and unconditionally converging operators
Autorzy:
Alvarez, T.
Cross, R.
Gouveia, A.
Powiązania:
https://bibliotekanauki.pl/articles/1289589.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
Characterisations are obtained for the following classes of unbounded linear operators between normed spaces: weakly compact, weakly completely continuous, and unconditionally converging operators. Examples of closed unbounded operators belonging to these classes are exhibited. A sufficient condition is obtained for the weak compactness of T' to imply that of T.
Źródło:
Studia Mathematica; 1995, 113, 3; 283-298
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Synthesis Gas as Fuel for a Solid Oxide Fuel Cell
Autorzy:
Alvarez-Cedillo, Jesus A.
Alvarez-Sanchez, Teodoro
Sandoval-Gomez, Raul J.
Gonzalez-Vasquez, Alexis
Sarabia-Alonso, Teresa
Powiązania:
https://bibliotekanauki.pl/articles/2202146.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
anode
cathode
electrolyte
biomass
syngas
solid oxide fuel cell
mathematical model
steady state
Opis:
There is a real need to use various efficient energy supply systems that are not aggressive towards the global environment. Hydrogen has been seen in different research papers presented in the literature as an essential fuel to generate energy in various energy storage systems. As it is well-known, it is possible to generate renewable electricity using electrolysis. The hydrogen produced can be sold as fuel for various systems, most notably its use in solid oxide fuel cells and a host of modern applications today. Current low-temperature fuel cells are ideal for hydrogen operation, but are not suitable for hydrogen mixtures. In this article, a mathematical analysis was carried out to generate electrical energy in a fuel cell, fed with synthesis gas from the residual biomass gasification process; the primary interest was the generation of electrical energy, solid oxide fuel cell (SOFC), which operate at the temperature of the gas at the outlet of the gasifier were analyzed. The practical efficiency obtained and the theoretical results of the SOFC operation were shown.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 35--41
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Orchid diversity at Cuetzalan del Progreso, Puebla, Mexico – anthropogenic threats and potential for organic production for conservation purposes
Autorzy:
Alvarez-Mora, Raúl
Cetzal-Ix, William
Basu, Saikat Kumar
Noguera-Savelli, Eliana
González-Valdivia, Noel A.
Martínez-Puc, Jesús F.
Zandi, Peiman
Możdżeń, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2182149.pdf
Data publikacji:
2016-12-31
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
anthropogenic factors
biodiversity
conservation
Cuetzalan del Progreso
Mexico
orchid
Opis:
The orchid flora of Puebla State represents 16% of the total species present in Mexico demonstrating rich biodiversity. However, several municipalities in the north-east of Puebla area are located within a conservation priority area for its tropical montane cloud forest and tropical rain forest due to decision of the Comisión Nacional para el Conocimiento y el Uso de la Biodiversidad of Mexico. We have recorded 93 species from Cuetzalan del Progreso with 25 new records of the flora of the state. These new dditions thereby currently increase the orchid flora of Puebla to 197 species. Of these, six species are classified as threatened, three as subject to special protection by the NOM-059-SEMARNAT-2010 and one classified as least concern by the International Union for the Conservation of Nature. Moreover, we recorded 37 species illegally traded in “tianguis” (informal markets) of Cuetzalan del Progreso. The orchid diversity in the fragmented forests can be harnessed in establishing a model for the sustainable management and to promote conservation action f species at some level of threat and in the restoration of areas with fragmented forests. Unfortunately, the orchid diversity has been seriously endangered by several anthropogenic factors. We have also recorded significant anthropogenic threats in this municipality for the long-term existence of the local orchid members and species with potential for commercial production. A viable approach will be to allow the introduction of in vitro germination program and organic production of orchids by local and fringe communities; this will reduce inhabitants’ dependence on the scarce forest resources, lessen illegal harvesting and trafficking of wild orchids, and at the same time provide economic development for the local communities.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2016, 1; 7-23
2543-8832
2545-0999
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The parallel application of two probability models, logit and probit, for the accurate analysis of spruce timber damage due to thinning operations
Autorzy:
Bakinowska, E.
Mederski, P.S.
Szczepanska-Alvarez, A.
Karaszewski, Z.
Bembenek, M.
Powiązania:
https://bibliotekanauki.pl/articles/52374.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2016, 59, 197
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solutions for conservative nonlinear oscillators using an approximate method based on Chebyshev series expansion of the restoring force
Autorzy:
Beléndez, A.
Hernández, A.
Beléndez, T.
Pascual, C.
Alvarez, M.
Arribas, E.
Powiązania:
https://bibliotekanauki.pl/articles/1075577.pdf
Data publikacji:
2016-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.30.Hq
02.30.Mv
05.45.-a
Opis:
Approximate solutions for small and large amplitude oscillations of conservative systems with odd nonlinearity are obtained using a "cubication" method. In this procedure, the Chebyshev polynomial expansion is used to replace the nonlinear function by a third-order polynomial equation. The original second-order differential equation, which governs the dynamics of the system, is replaced by the Duffing equation, whose exact frequency and solution are expressed in terms of the complete elliptic integral of the first kind and the Jacobi elliptic function cn, respectively. Then, the exact solution for the Duffing equation is the approximate solution for the original nonlinear differential equation. The coefficients for the linear and cubic terms of the approximate Duffing equation - obtained by "cubication" of the original second-order differential equation - depend on the initial oscillation amplitude. Six examples of different types of common conservative nonlinear oscillators are analysed to illustrate this scheme. The results obtained using the cubication method are compared with those obtained using other approximate methods such as the harmonic, linearized and rational balance methods as well as the homotopy perturbation method. Comparison of the approximate frequencies and solutions with the exact ones shows good agreement.
Źródło:
Acta Physica Polonica A; 2016, 130, 3; 667-678
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uszkodzenia drzew w następstwie trzebieży wczesnych w nizinnych drzewostanach świerkowych
Tree damage in lowland spruce stands caused by early thinnings
Autorzy:
Bembenek, M.
Giefing, D.F.
Karaszewski, Z.
Mederski, P.S.
Szczepańska-Alvarez, A.
Powiązania:
https://bibliotekanauki.pl/articles/991597.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
uzytkowanie lasu
drzewostany nizinne
trzebiez wczesna
drzewostany swierkowe
swierk
uszkodzenia drzew
spruce
tree damage
timber harvest methods
early thinning
Opis:
The paper presents analysis of tree damage after early thinning in lowland spruce stands. Percentage of tree with damage and weighted damage index (WDI) were considered. Three different thinning operations were analysed, in which different cutting method was applied. The smallest level of damage was observed when short wood system (SWS) was used. There were no significant differences between frequency of damage when full tree (FTS) and long wood (LWS) systems were compared.
Źródło:
Sylwan; 2013, 157, 10; 747-753
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uszkodzenia drzew w nizinnych drzewostanach świerkowych podczas zabiegu trzebieży późnej
Tree damage in lowland spruce stands because of late thinning
Autorzy:
Bembenek, M.
Giefling, D.F.
Karaszewski, Z.
Mederski, P.S.
Szczepańska-Alvarez, A.
Powiązania:
https://bibliotekanauki.pl/articles/993989.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
uzytkowanie lasu
drzewostany nizinne
trzebiez pozna
pozyskiwanie drewna
metody pozyskiwania drewna
drzewostany swierkowe
swierk
uszkodzenia drzew
norway spruce
tree damage
thinning operations
Opis:
The paper studies tree damage after late thinning operation in lowland spruce stands. The research was done in the 4ͭʰ age class stands, where three different methods of timber harvesting were applied: full tree system (FTS), long wood system (LWS), short wood system (SWS). The lowest level of damage was observed in SWS.
Źródło:
Sylwan; 2013, 157, 12; 892-898
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 35

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