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Wyświetlanie 1-15 z 3489
Tytuł:
Second order triangular graceful graphs
Autorzy:
Sakthi Sankari, R.
Syed Ali Nisaya, M. P.
Powiązania:
https://bibliotekanauki.pl/articles/1193377.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Second order triangular graceful graph
Second order triangular graceful labeling
Second order triangular number
Opis:
Let G=(V,E) be a graph with p vertices and q edges. A second order triangular graceful labeling of a graph G is an one to one function φ:V(G)→{0,1,2,…,B_q} where B_q is the qth second order triangular number, ie., B_q=1/6 q(q+1)(2q+1), that induces a bijection φ^*:E(G)→{B_1,B_2,…,B_q} of the edges of G defined by φ^* (uv) =|φ(u)-φ(v)| ∀ e=uv ∈E(G). A graph which admits such labeling is called a second order triangular graceful graph. In this paper, we introduce second order triangular graceful labeling and we prove that star, subdivision of star, nK_1,3, nK_2, bistar, path, comb, coconut tree, shrub and Y-tree are second order triangular graceful graphs.
Źródło:
World Scientific News; 2021, 155; 140-154
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On relations among the generalized second-order directional derivatives
Autorzy:
Pastor, Karel
Powiązania:
https://bibliotekanauki.pl/articles/729322.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
generalized second-order directional derivative
convexity
second-order optimality conditions
Opis:
In the paper, we deal with the relations among several generalized second-order directional derivatives. The results partially solve the problem which of the second-order optimality conditions is more useful.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2001, 21, 2; 235-247
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Second order convexity and a modified objective function method in mathematical programming
Autorzy:
Antczak, T.
Powiązania:
https://bibliotekanauki.pl/articles/969778.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
programowanie matematyczne
mathematical programming
second order modified objective function optimization problem
second order convex function
second order optimality conditions
Opis:
An approach to nonlinear constrained mathematical programming problems which makes use of a second order derivative is presented. By using a second order modified objective function method, a modified optimization problem associated with a primal mathematical programming problem is constructed. This auxiliary optimization problem involves a second order approximation of an objective function constituting the primal mathematical programming problem. The equivalence between the original mathematical programming problem and its associated modified optimization problem is established under second order convexity assumption. Several practical O.R. applications show that our method is efficient. Further, an iterative algorithm based on this approach for solving the considered nonlinear mathematical programming problem is given for the case when the functions constituting the problem are second order convex. The convergence theorems for the presented algorithm are established.
Źródło:
Control and Cybernetics; 2007, 36, 1; 161-182
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biofuels of first and second generation
Autorzy:
Rostek, E.
Powiązania:
https://bibliotekanauki.pl/articles/242085.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
first generation biofuel
second generation biofuel
biomass
Opis:
Sustainable economic and industrial growth requires safe, sustainable resources of energy. For the future rearrangement of a sustainable economy to biological raw materials, completely new approaches in research and development, production, and economy are necessary. The biofuels produced from the renewable resources could help to minimize the fossil fuel burning and CO2 production. Biofuels produced from biomass such as plants or organic waste could help to reduce both the world’s dependence on oil and CO2 production. These biofuels have the potential to cut CO2 emission because the plants they are made from use CO2 as they grow. Biofuels and bio products produced from plant biomass would mitigate global warming. The ‘first-generation’ biofuels appear unsustainable because of the potential stress that their production places on food commodities. For organic chemicals and materials these needs to follow a biorefinery model under environmentally sustainable conditions. Where these operate at present, their product range is largely limited to simple materials (i.e. cellulose, ethanol, and biofuels). Second generation biorefineries need to build on the need for sustainable chemical products through modern and proven green chemical technologies such as bioprocessing including pyrolysis, Fisher Tropsch, and other catalytic processes in order to make more complex molecules and materials on which a future sustainable society will be based. The article presents the basic processes of converting liquid and gaseous biofuels and second-generation.
Źródło:
Journal of KONES; 2016, 23, 4; 413-420
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Second order inferencje in natural language semantics
Autorzy:
Pulman, S.
Powiązania:
https://bibliotekanauki.pl/articles/103917.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Podstaw Informatyki PAN
Tematy:
first order
second order
inference
adjectives
possessives
Opis:
In this paper I look at a number of apparently trivial valid inferences (as well as some invalid and missing inferences) associated with the possessive construction and with different types of adjectival modification of nouns. In the case of possessives, all analyses I know of, whether implemented or not, systematically sanction invalid inferences. In the case of adjectives, there are some model-theoretic linguistic analyses that are adequate at a theoretical level, but no satisfactory practical computational implementations that I am aware of which capture the correct inference patterns. A common thread between the possessive and the adjectival construction is that to derive the correct inferences we need secondo order quantification. This is an uncontroversial move within modeltheoretic formal semantics but a problem for computational semantics, since we have no fully automated theorem provers for anything Rother than first order logic (and only for subsets of first order logic do we have provers that are both fully decidable and efficient). I explore what is needed to provide a proof-theoretic account of the relevant inference patterns, and suggest some analyses requiring second order axioms. In order to make this a practical computational possibility I go on to propose two techniques for approximating such inferences in a first order setting. The suggested analyses have been fully implemented, and in an appendix I provide a small FraCaS-like corpus of relevant examples, all of which are handled correctly by the implementation.
Źródło:
Journal of Language Modelling; 2018, 6, 1; 1-40
2299-856X
2299-8470
Pojawia się w:
Journal of Language Modelling
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Amenability and the second dual of a Banach algebra
Autorzy:
Gourdeau, Frédéric
Powiązania:
https://bibliotekanauki.pl/articles/1219583.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
amenability
Arens regularity
second dual
Opis:
Amenability and the Arens product are studied. Using the Arens product, derivations from A are extended to derivations from A**. This is used to show directly that A** amenable implies A amenable.
Źródło:
Studia Mathematica; 1997, 125, 1; 75-81
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Second-order necessary conditions of the Kuhn-Tucker type in multiobjective programming problems
Autorzy:
Aghezzaf, B.
Powiązania:
https://bibliotekanauki.pl/articles/970055.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
programowanie obiektowe
efficient solutions
multiobjective programming
second-order constraint qualification
second-order necessary conditions
Opis:
In this paper, we are concerned with a multiobjective programming problem with inequality constraints. We develop second-order necessary condition of the Kuhn-Tucker type for effciency and prove that the condition holds under a. constraint qualification. Moreover, we give some conditions which ensure that the constraint qua,lifica.tion holds.
Źródło:
Control and Cybernetics; 1999, 28, 2; 213-224
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reimund Bieringer – Emmanuel Nathan – Didier Pollefeyt – Peter J. Tomson (eds.), Second Corinthians in the Perspective of Late Second Temple Judaism (Compendia Rerum Iudaicarum ad Novum Testamentum 14; Leiden: Brill 2014)
Autorzy:
Kowalski, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/1178951.pdf
Data publikacji:
2019-06-21
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
Second Corinthians
Late Second Temple Judaism
New Perspective on Paul
Opis:
Book review Reimund Bieringer – Emmanuel Nathan – Didier Pollefeyt – Peter J. Tomson (eds.), Second Corinthians in the Perspective of Late Second Temple Judaism (Compendia Rerum Iudaicarum ad Novum Testamentum 14; Leiden: Brill 2014)
Źródło:
The Biblical Annals; 2019, 9, 3; 601-608
2083-2222
2451-2168
Pojawia się w:
The Biblical Annals
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An abstract nonlocal second order evolution problem
Autorzy:
Byszewski, L.
Winiarska, T.
Powiązania:
https://bibliotekanauki.pl/articles/255359.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
nonlocal
second order
evolution problem
Banach space
Opis:
The aim of the paper is to prove theorems on the existence and uniqueness of mild and classical solutions of a semilinear evolution second order equation together with nonlocal conditions. The theory of strongly continuous cosine families of linear operators in a Banach space is applied.
Źródło:
Opuscula Mathematica; 2012, 32, 1; 75-82
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fluency in second language writing: A developmental perspective
Autorzy:
Kowal, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/634503.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
writing fluency, second language development, Dynamic Systems Theory
Opis:
The paper presents a longitudinal study of writing fluency in second language students. The aim was to follow the development of the students’ fluency during a three-year period in which they studied Swedish as a second language. Fifteen Polish university students participated in the study. The analysis shows that fluency develops non-linearly with some peaks in the average developmental curve. Furthermore, we observed both between- and within-individual variability in fluency in text production. The development of fluency is unpredictable and no one subject mirrors in their development the average curve. Individual differences were observed at every step of second language development. The analysis shows that writers who are slow at typing are not automatically less fluent and that subjects who develop more slowly can achieve a high level of fluency in writing. In general, writers who were slower and less fluent at the beginning made the greatest progress in fluency during the three-year period, compared with those who were more skilled with regard to both language and typing, who achieved a certain level of fluency faster than their fellow students.
Źródło:
Studia Linguistica Universitatis Iagellonicae Cracoviensis; 2014, 131, 3
2083-4624
Pojawia się w:
Studia Linguistica Universitatis Iagellonicae Cracoviensis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Druga linia metra warszawskiego
The second line of Warsaw metro
Autorzy:
Graff, M.
Powiązania:
https://bibliotekanauki.pl/articles/250201.pdf
Data publikacji:
2015
Wydawca:
Instytut Naukowo-Wydawniczy TTS
Tematy:
metro
druga linia
Warszawa
second line
Warsaw
Opis:
W marcu 2015 r. przekazano do eksploatacji centralny odcinek drugiej linii metra w Warszawie o długości 6,3 km biegnący od Ronda Daszyńskiego do Dworca Wileńskiego. Na nowym fragmencie linii metra znajduje się 7 stacji położonych na głębokości od 13 do 23 metrów, w tym przejście pod korytem Wisły o długości 920/935 m (tunel północny/południowy) oraz połączenie z pierwszą linią metra jednotorowym tunelem o długości 361 m zlokalizowanym pomiędzy stacjami Rondo ONZ - Świętokrzyska (II linia) i Świętokrzyska - Centrum (I linia). Węzeł przesiadkowy znajduje się na stacji Świętokrzyska. W artykule przedstawiono rozwiązania techniczne i eksploatacyjne zastosowane na tej linii.
Źródło:
TTS Technika Transportu Szynowego; 2015, 12; 23-30
1232-3829
2543-5728
Pojawia się w:
TTS Technika Transportu Szynowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Second language learning for vulnerable adult migrants: The case of the Italian public school
Autorzy:
Deiana, Igor
Spina, Stefania
Powiązania:
https://bibliotekanauki.pl/articles/911703.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
adult foreign language education
vulnerable adult migrants
second language adult learners
illiterate students
teaching Italian as a second language
second language teachers
language teacher training
language testing and assessment
Opis:
Over the last years, thousands of asylum seekers and refugees have arrived in Italy, including a large number of teenagers without any adult caregivers and women. A significant partof them is placed in the Italian language courses for foreigners organised by the Provincial Centre for Adult Education, commonly called CPIA (Centro Provinciale per l’Istruzione degli Adulti). Thispaper addresses the exploration of the language testing and assessment of the courses organized by this institution. With the aim of evaluating these aspects, the paper concentrates on the CPIA,its teachers, and its students. Focusing on CPIA’s language courses, we investigate the language testing and assessment carried out at the beginning and at the end of the language courses. Thanks to these observations, the paper tries to identify some critical aspects and to understand their causes.
Źródło:
Glottodidactica. An International Journal of Applied Linguistics; 2020, 47, 2; 67-81
0072-4769
Pojawia się w:
Glottodidactica. An International Journal of Applied Linguistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Second derivatives and sufficient optimality conditions for shape funetionals
Autorzy:
Eppler, K.
Powiązania:
https://bibliotekanauki.pl/articles/206712.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
optimal shape design
second directional derivatives
sufficient optimality conditions
Opis:
For sorne heuristic approaches to boundary variation in shape optimization the computation of second derivatives of domain and boundary integral functionals, their symmetry and a comparison to the velocity field or material derivative method are discussed. Moreover, for these approaches the functionals are Frechet-differentiable in some sense, because at least a local embedding into a Banach space problem is possible. This allows the discussion of sufficient condition in terms of a coercivity assumption on the second Frechet-derivative. The theory is illustrated by a discussion of the famous Dido problem.
Źródło:
Control and Cybernetics; 2000, 29, 2; 485-511
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane środowiskowe aspekty ekonomii a teoria second-best
Selected environmental aspects of economics vs. theory of second best
Autorzy:
Goral, J.
Powiązania:
https://bibliotekanauki.pl/articles/868182.pdf
Data publikacji:
2016
Wydawca:
The Polish Association of Agricultural and Agribusiness Economists
Opis:
Przedstawiono zagadnienia z zakresu ekonomii środowiska i zasobów naturalnych, ze szczególnym uwzględnieniem troski o stan dóbr publicznych i redukcji negatywnych efektów zewnętrznych (zanieczyszczania środowiska). Przybliżono w tym kontekście zagadnienie second best rozumiane jako narzędzie służące do internalizacji środowiskowych efektów zewnętrznych. Teoria second best jest powiązana z optimum Pareto oraz ułomnościami wolnego rynku. Znajduje szerokie zastosowanie w poszukiwaniu optymalnych rozwiązań podatkowych bądź w polityce celnej. Rozważania prowadzono na podstawie studium literatury.
The paper presents issues of environmental economy and natural resources, with a particular focus on the state of public goods and reduce negative externalities (pollution). Approximated in this context, the issue of second best theory understood as a means to internalize environmental effects was highlited. The theory of second best is associated with a Pareto optimum and weaknesses of the free market. It is widely used in the search for optimal solutions in tax or customs policy.
Źródło:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2016, 18, 6
1508-3535
2450-7296
Pojawia się w:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 3489

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