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Wyszukujesz frazę "first order" wg kryterium: Temat


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:
Robustness of adaptive discrete-time LQG control for first-order systems
Autorzy:
Królikowski, A.
Horla, D.
Powiązania:
https://bibliotekanauki.pl/articles/199940.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
first order system
adaptive LQG control
robustness
Opis:
The discrete-time adaptive LQG control of first-order systems is considered from robustness point of view. Both stability and performance robustness are analyzed for different control system structures. A case of amplitude-constrained control is presented, and application of certainty equivalence for self-tuning implementation is also discussed.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2010, 58, 1; 89-97
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the transient state in a circuit with supercapacitor
Autorzy:
Jakubowska, A.
Walczak, J.
Powiązania:
https://bibliotekanauki.pl/articles/377512.pdf
Data publikacji:
2015
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
fractional-order differential equation
first-order RCα circuit
supercapacitor
Opis:
The paper presents an analysis of the transient state in a simple circuit of RCα class with a supercapacitor. The behavior of supercapacitors differs from that of classic capacitors, which influences voltage and current waveforms in circuits containing them. The waveforms are described by relations of fractional-order integral-differential calculus. A simple fractional-order supercapacitor model, including its series internal resistance, has been assumed for the analysis. The obtained solution of the fractional-order differential equation describing the examined circuit is presented. The impact of different values of the parameter α on the solution has been analyzed too. The derived relations are illustrated by simulation examples for the circuit powered by a DC voltage source. This situation describes the supercapacitor charging process. Its charging time depends mainly on the value of fractional-order parameter α of the supercapacitor.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2015, 81; 71-77
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oscillation conditions for difference equations with several variable delays
Autorzy:
El-Matary, Bassant M.
El-Morshedy, Hassan A.
Benekas, Vasileios
Stavroulakis, Ioannis P.
Powiązania:
https://bibliotekanauki.pl/articles/29519474.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
oscillation
difference equations
non-monotone delays
first order
Opis:
A technique is developed to establish a new oscillation criterion for a first-order linear difference equation with several delays and non-negative coefficients. Our result improves recent oscillation criteria and covers the cases of monotone and non-monotone delays. Moreover, the paper is concluded with an illustrative example to show the applicability and strength of our result.
Źródło:
Opuscula Mathematica; 2023, 43, 6; 789-801
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polish Presidential Election 2015 in the light of first and second order election conception
Autorzy:
Peszyński, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/514415.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Śląski. Wydział Nauk Społecznych
Tematy:
Polish presidential election 2015
first order election
second order election
Opis:
Among all the elections organized in Poland, presidential elections are not only the ones with a highest turnout, but also most eagerly investigated by the researchers. However, the studies concerning the importance of this particular voting is not often examined. On the one hand, there are arguments to classify it as first-order election, on the other, for certain reasons they ought to be regarded as second-order. The aim of this article is to answer the question whether 2015 Polish presidential election were of first or rather second-order importance. In his analysis, the author focused on the following issues: personal strategies, programme strategies, the course of the campaign in the traditional and new media, the level of electoral participation and the influence of the election on the course and outcome of the parliamentary campaign.
Źródło:
Political Preferences; 2016, 13; 57-72
2449-9064
Pojawia się w:
Political Preferences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Henkin semantics for reasoning with natural language
Autorzy:
Hahn, M.
Richter, F.
Powiązania:
https://bibliotekanauki.pl/articles/103815.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Podstaw Informatyki PAN
Tematy:
Henkin semantics
reasoning
reducing higher-order reasoning
first-order reasoning
Opis:
The frequency of intensional and non-first-order definable operators in natural languages constitutes a challenge for automated reasoning with the kind of logical translations that are deemed adequate by formal semanticists. Whereas linguists employ expressive higher-order logics in their theories of meaning, the most successful logical reasoning strategies with natural language to date rely on sophisticated first-order theorem provers and model builders. In order to bridge the fundamental mathematical gap between linguistic theory and computational practice, we present a general translation from a higher-order logic frequently employed in the linguistics literature, two-sorted Type Theory, to first-order logic under Henkin semantics. We investigate alternative formulations of the translation, discuss their properties, and evaluate the availability of linguistically relevant inferences with standard theorem provers in a test suite of inference problems stated in English. The results of the experiment indicate that translation from higher-order logic to first-order logic under Henkin semantics is a promising strategy for automated reasoning with natural languages.
Źródło:
Journal of Language Modelling; 2015, 3, 2; 513-568
2299-856X
2299-8470
Pojawia się w:
Journal of Language Modelling
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reducing the Number of Higher-order Mutants with the Aid of Data Flow
Autorzy:
Ghiduk, A. S.
Powiązania:
https://bibliotekanauki.pl/articles/384156.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
mutation testing
first-order mutants
higher-order mutants
data-flow analysis
Opis:
Higher-order mutants are created by injecting two or more mutations into the original program, while first-order mutants are generated by seeding single faults in the original program. Mutant generation is a key stage of mutation testing which is computationally very expensive, especially in the case of higher-order mutants. Although many mutation testing techniques have been developed to construct the first-order mutants, a very small number of techniques have been presented to generate the higher-order mutants because of the exponential growth of the number of higher-order mutants, and the coupling effect between higher-order and first-order mutants. To overcome the exponential explosion in the number of higher-order mutants considered, this paper introduces a new technique for generating a reduced set of higher-order mutants. The proposed technique utilizes a data-flow analysis to decrease the number of mutation points through the program under test and consequently reduce the number of higher-order mutants. In this technique only positions of defs and uses are considered as locations to seed the mutation. The generated set of higher-order mutants consists of a reduced number of mutants, which reduces the costs of higher-order mutation testing. In addition, the proposed technique can generate the higher-order mutants directly without generating the first-order mutants or by combining two or more first-order mutants. A set of experiments are conducted to evaluate the effectiveness of the proposed technique. The results of the conducted experiments are presented and compared with the results of the related work. These results showed that the proposed technique is more effective than the earlier techniques in generating higher-order mutants without affecting the efficiency of mutation testing.
Źródło:
e-Informatica Software Engineering Journal; 2016, 10, 1; 31-49
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the stability of first order impulsive evolution equations
Autorzy:
Wang, J.
Feckan, M.
Zhou, Y.
Powiązania:
https://bibliotekanauki.pl/articles/255727.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
first order
impulsive evolution equations
Ulam-Hyers-Rassias stability
Opis:
In this paper, concepts of Ulam-Hyers stability, generalized Ulam-Hyers stability, Ulam-Hyers-Rassias stability and generalized Ulam-Hyers-Rassias stability for impulsive evolution equations are raised. Ulam-Hyers-Rassias stability results on a compact interval and an unbounded interval are presented by using an impulsive integral inequality of the Gronwall type. Two examples are also provided to illustrate our results. Finally, some extensions of the Ulam-Hyers-Rassias stability for the case with infinite impulses are given.
Źródło:
Opuscula Mathematica; 2014, 34, 3; 639-657
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetic Modelling and Half Life Study of Adsorptive Bioremediation of Soil Artificially Contaminated With Bonny Light Crude Oil
Autorzy:
Agarry, S. E.
Oghenejoboh, K. M.
Solomon, B. O.
Powiązania:
https://bibliotekanauki.pl/articles/123870.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
activated carbon
biochar
biodegradation
crude oil
first-order kinetics
Opis:
In this study, comparative potential effects of commercial activated carbon (CAC) and plantain peel-derived biochar (PPBC) of different particle sizes and dosage to stimulate petroleum hydrocarbon biodegradation in soil were investigated. Microcosms containing soil were spiked with weathered Bonny light crude oil (WBLCO) (10% w/w) and amended with different particle sizes (0.02, 0.07 and 0.48 mm) and dosage (20, 30 and 40 g) of CAC and PPBC, respectively. The bioremediation experiments were carried out for a period of 28 days under laboratory conditions. The results showed that there was a positive relationship between the rate of petroleum hydrocarbons reduction and presence of the CAC and PPBC in crude oil contaminated soil microcosms. The WBLCO biodegradation data fitted well to the first-order kinetic model. The model revealed that WBLCO contaminated-soil microcosms amended with CAC and PPBC had higher biodegradation rate constants (k) as well as lower half-life times (t1/2) than unamended soil (natural attenuation) remediation system. The rate constants increased while half-life times decreased with decreased particle size and increased dosage of amendment agents. ANOVA statistical analysis revealed that WBLCO biodegradation in soil was significantly (p = 0.05) influenced by the addition of CAC and biochar amendment agents, respectively. However, Tukey’s post hoc test (at p = 0.05) showed that there was no significant difference in the bioremediation efficiency of CAC and PPBC. Thus, amendment of soils with biochar has the potential to be an inexpensive, efficient, environmentally friendly and relatively novel strategy to mitigate organic compound-contaminated soil.
Źródło:
Journal of Ecological Engineering; 2015, 16, 3; 1-13
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Praktyczny aspekt logiki (stanowisko Kazimierza Ajdukiewicza)
The Practical Aspect of Logic from the Standpoint of Kazimierz Ajdukiewicz
Autorzy:
Czernecka-Rej, Bożena
Powiązania:
https://bibliotekanauki.pl/articles/468752.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Filozofii i Socjologii PAN
Tematy:
Ajdukiewicz Kazimierz
first-order logic
logical culture
practical science
Opis:
The aim of this article is to present and discuss the Ajdukiewicz’s concept of the practical aspect of logic. To begin, I describe his concept of the practical importance of science and especially his concept of logic – i.e., the definition and range of logic. The idea of “logical culture” is fundamental to his conceptualization. I also present Ajdukiewicz’s idea that making the course of logic more practical should be required. At the end of the article I discuss the importance of Ajdukiewicz’s view.
Źródło:
Prakseologia; 2012, 152; 223-235
0079-4872
Pojawia się w:
Prakseologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plate structural analysis based on a double interpolation element with arbitrary meshing
Autorzy:
Ton-That, Hoang Lan
Powiązania:
https://bibliotekanauki.pl/articles/1837942.pdf
Data publikacji:
2021
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
mesh irregularity
first-order shear deformation theory
double interpolation procedure
Opis:
This paper presents the plate structural analysis based on the finite element method (FEM) using a double interpolation element with arbitrary meshing. This element used in this research is related to the first-order shear deformation theory (FSDT) and the double interpolation procedure. The first stage of the procedure is the same with the standard FEM for the quadrilateral element, but the averaged nodal gradients must be computed for the second stage of this interpolation. Shape functions established by the double interpolation procedure exhibit more continuous nodal gradients and higher-order polynomial contrast compared to the standard FEM when analysing the same mesh. Note that the total degrees of freedom (DOFs) do not increase in this procedure, and the trial solution and its derivatives are continuous across inter-element boundaries. Besides, with controlling distortion factors, the interior nodes of a plate domain are derived from a set of regular nodes. Four practical examples with good results and small errors are considered in this study for showing excellent efficiency for this element. Last but not least, this element allows us to implement the procedure in an existing FEM computer code as well as can be used for nonlinear analysis in the near future.
Źródło:
Acta Mechanica et Automatica; 2021, 15, 2; 91-99
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Salicylic acid release from chitosan pellets coated with polylactide
Autorzy:
Mucha, Maria
Balcerzak, Jacek
Filipiak, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1035411.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
chitosan
first order kinetics
polylactide
prolonged drug release
salicylic acid
Opis:
The aim of the study was to prepare a bi-polymer drug carrier composed of chitosan pellets (CS) coated with polylactide shell (PLA) providing prolonged model drug – salicylic acid (SA) release into phosphate buffer of pH = 7.2. Pellets were obtained through a coacervation followed by a freeze-drying process. In a terms of model drug loading, porous pellets were impregnated with a SA solution under vacuum. Afterwards, loaded and dried beads were coated with PLA films through their dipping in a PLA organic solution. FTIR spectroscopy was implemented to analyse the efectiveness of SA loading process. The UV-Vis spectrophotometry kinetic studies of a model drug release from PLA coated and non-coated pellets into phosphate buffer were conducted. Increasing time of CS pellets impregnation with SA solution resulted in decrease of salicylic acid release rate.This tendency was more evident for the SA release from pellets coated with an additional layer of PLA. Model drug release kinetic points were well approximated with first order kinetics model.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2011, 16; 79-88
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Controllability of semilinear systems with fixed delay in control
Autorzy:
Kumar, S.
Sukavanam, N.
Powiązania:
https://bibliotekanauki.pl/articles/952777.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
first order delay system
mild solution
fixed point
exact controllability
Opis:
In this paper, different sufficient conditions for exact controllability of semilinear systems with a single constant point delay in control are established in infinite dimensional space. The existence and uniqueness of mild solution is also proved under suitable assumptions. In particular, local Lipschitz continuity of a nonlinear function is used. To illustrate the developed theory some examples are given.
Źródło:
Opuscula Mathematica; 2015, 35, 1; 71-83
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Equilibrium and kinetic studies of palladium(II) ions sorption onto Dowex resins
Autorzy:
Wołowicz, A.
Hubicki, Z.
Greluk, M.
Powiązania:
https://bibliotekanauki.pl/articles/115919.pdf
Data publikacji:
2011
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
palladium
sorption
pseudo-first order kinetic equation
pseudo-second order kinetic equation
isotherms
Opis:
Palladium(II) sorption was studied in hydrochloric acid solutions with sodium chloride addition onto Dowex MSA-1 and Dowex MSA-2 resins by means of the static method. The dependence between the amount of palladium(II) ions sorbed at time tin a disequilibrium state (qt) as well as the sorption capacities (qe) and phases contact time were obtained. The results were applied in kinetic studies using the pseudo-fi rst (Lagergren equation) and pseudo-second order kinetic equations (linear form of Blanchard equation proposed by Ho, PSO). Moreover, the equilibrium studies were caried out at ambient temperature and fitted to the Langmuir and Freundlich isotherms. The AFM pictures of the surface of anion exchange resins before and after the loading process were also recorded. Both resins exhibit high selectivity towards palladium(II) ions. The sorption capacities are in the range 7–10 mg/g for both resins under discussion in all examined solutions. Th e pseudo-second order kinetic equation and the Langmuir isotherm show the best fit with the experimental data.
Źródło:
Challenges of Modern Technology; 2011, 2, 2; 71-75
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First and Second Order Characteristics of a Wireless Three-hop Relay Channel with the Presence of Rayleigh Fading
Autorzy:
Krstic, Dragana
Nikolic, Petar
Popovic, Zoran
Stefanovic, Mihajlo
Powiązania:
https://bibliotekanauki.pl/articles/308263.pdf
Data publikacji:
2020
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
first order performance
Rayleigh fading
second order performance
three-hop relay telecommunication systems
Opis:
In this paper, a wireless three-hop relay communication system operating in a Rayleigh multipath fading environment is analyzed. The output signal from such a system is a product of signal envelopes from all sections, meaning that it is actually a product of three random variables (RVs) with Rayleigh distribution. We considered here the first-order characteristics: probability density function (PDF), cumulative distribution function and outage probability (OP). Then, the moments and amount of fading (AoF) were derived in the closed forms. The second order characteristics we present include the following: level crossing rate (LCR) and average fade duration (AFD). A few graphs are given to show the impact of the specific parameters of the wireless three-hop relay system.
Źródło:
Journal of Telecommunications and Information Technology; 2020, 2; 36-44
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł

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