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Wyświetlanie 1-15 z 64
Tytuł:
On sharp reiteration theorems and weighted norm inequalities
Autorzy:
Bastero, Jesús
Milman, Mario
Ruiz, Francisco
Powiązania:
https://bibliotekanauki.pl/articles/1206002.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
reiteration
weights
Hardy inequality
Opis:
We prove sharp end forms of Holmstedt's reiteration theorem which are closely connected with a general form of Gehring's Lemma. Reverse type conditions for the Hardy-Littlewood-Pólya order are considered and the maximal elements are shown to satisfy generalized Gehring conditions. The methods we use are elementary and based on variants of reverse Hardy inequalities for monotone functions.
Źródło:
Studia Mathematica; 2000, 142, 1; 7-24
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Weighted Hardy inequalities and Hardy transforms of weights
Autorzy:
Cerdà, Joan
Martín, Joaquim
Powiązania:
https://bibliotekanauki.pl/articles/1206120.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Hardy's inequalities
Hardy transform
weights
Opis:
Many problems in analysis are described as weighted norm inequalities that have given rise to different classes of weights, such as $A_p$-weights of Muckenhoupt and $B_p$-weights of Ariño and Muckenhoupt. Our purpose is to show that different classes of weights are related by means of composition with classical transforms. A typical example is the family $M_p$ of weights w for which the Hardy transform is $L_p(w)$-bounded. A $B_p$-weight is precisely one for which its Hardy transform is in $M_p$, and also a weight whose indefinite integral is in $A_{p+1}$
Źródło:
Studia Mathematica; 2000, 139, 2; 189-196
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metrological equipment for verification and calibration of non-automatic weighing instruments – axle and crane weighting instrument
Autorzy:
Gajdosik, Tomas
Kucera, Lubos
Gajdac, Igor
Fric, Anton
Markovic, Jaromir
Powiązania:
https://bibliotekanauki.pl/articles/1849138.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metrology
calibration
verification
weights
design
Opis:
The paper deals with the design of equipment for verification and calibration of axle and crane weighing instruments. In its introduction, it discusses the basic concepts of axle and crane weighing instruments, their calibration, and verification. The paper briefly describes the original technical design solution used in the calibration and verification of these weighing instruments. Subsequently, the article describes the legislative, technical and functional requirements for metrological equipment being developed. The paper presents two design solutions for handling calibration weights. In both solutions, the construction and individual functional parts of the equipment are described. Both of these solutions were designed and tested in practical measurements in the Laboratory for Testing of Weighing Instruments of the Slovak Legal Metrology n.o. Finally, the paper presents the results of the development of a new measuring system at the University of Žilina.
Źródło:
Metrology and Measurement Systems; 2021, 28, 2; 397-407
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
APPLICATION OF EPSILON METHOD TO MODELING EXPECTATIONS IN CONSTRUCTION
Autorzy:
Nehrebecka, Natalia
Grudkowska, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/972835.pdf
Data publikacji:
2009
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
Epsilon method
relative weights
construction
Opis:
The epsilon method has been applied to examine the strength of relations among selected objective and subjective factors connected with a manager’s predictions of their companies’ development. The aim of this research was to study which variable has the strongest impact on business expectations in construction. The results offer compelling evidence that respondents rely both on their current opinion on enterprise as well as on general economic situation. The survey was carried out based on Polish data from 2000:1 to 2008:10.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2009, 10, 1; 176-184
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The extention rank ordering criteria weighting methods in fuzzy enviroment
Autorzy:
Roszkowska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/406326.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
multi-criteria decision analysis
criteria weights
criteria ranking
fuzzy criteria ranking
fuzzy criteria weights
Opis:
Weight elicitation is an important part of multi-criteria decision analysis. In real-life decisionmaking problems precise information is seldom available, and providing weights is often cognitively demanding as well as very time- and effort-consuming. The judgment of decision-makers (DMs) depends on their knowledge, skills, experience, personality, and available information. One of the weights determination approaches is ranking the criteria and converting the resulting ranking into numerical values. The best known and most widely used are rank sum, rank reciprocal and centroid weights techniques. The goal of this paper is to extend rank ordering criteria weighting methods for imprecise data, especially fuzzy data. Since human judgments, including preferences, are often vague and cannot be expressed by exact numerical values, the application of fuzzy concepts in elicitation weights is deemed relevant. The methods built on the ideas of rank order techniques take into account imprecise information about rank. The fuzzy rank sum, fuzzy rank reciprocal, and fuzzy centroid weights techniques are proposed. The weights obtained for each criterion are triangular fuzzy numbers. The proposed fuzzy rank ordering criteria weighting methods can be easily implemented into decision support systems. Numerical examples are provided to illustrate the practicality and validity of the proposed methods.
Źródło:
Operations Research and Decisions; 2020, 30, 2; 91-114
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integral operators and weighted amalgams
Autorzy:
Carton-Lebrun, C.
Heinig, H.
Hofmann, S.
Powiązania:
https://bibliotekanauki.pl/articles/1290479.pdf
Data publikacji:
1994
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
amalgam spaces
weights
$A_p$ weights
Hardy operator
Hardy-Littlewood maximal operator
weighted amalgam inequalities
Opis:
For large classes of indices, we characterize the weights u, v for which the Hardy operator is bounded from $ℓ^{q̅}(L^{p̅}_{v})$ into $ℓ^{q}(L^{p}_{u})$. For more general operators of Hardy type, norm inequalities are proved which extend to weighted amalgams known estimates in weighted $L^p$-spaces. Amalgams of the form $ℓ^{q}(L^{p}_{w})$, 1 < p,q < ∞ , q ≠ p, $w ∈ A_p$, are also considered and sufficient conditions for the boundedness of the Hardy-Littlewood maximal operator and local maximal operator in these spaces are obtained.
Źródło:
Studia Mathematica; 1994, 109, 2; 133-157
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship of adiponectin, leptin, visfatin and IGF-1 in cow’s venous blood and venous cord blood with calf birth weight
Autorzy:
Shen, L.
Zhu, Y.
Xiao, J.
Deng, J.
Peng, G.
Zuo, Z.
Yu, S.
Ma, X.
Zhong, Z.
Ren, Z.
Zhou, Z.
Liu, H.
Zong, X.
Cao, S.
Powiązania:
https://bibliotekanauki.pl/articles/2087491.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
adiponectin
leptin
IGF-1
birth weights
cow
Źródło:
Polish Journal of Veterinary Sciences; 2019, 3; 541-548
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
SYNTHETIC RADAR MEASURES THAT FACTOR IN WEIGHTS OF FEATURES
Autorzy:
Binderman, Zbigniew
Borkowski, Boleslaw
Szczesny, Wieslaw
Powiązania:
https://bibliotekanauki.pl/articles/453225.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
synthetic measure
classification
ordering
weights
radar measure
Opis:
This work is a direct continuation of previous works of authors ([Binderman, Borkowski, Szczesny 2008, Binderman, Szczesny 2009]). The goal of this work is to generalize known methods of constructing measures of synthetic objects, methods that use radar charts of vectors. The methods listed in this work factor in weights assigned to features and make the values of indicators independent from the ordering of considered features. The listed methods have been applied in the analysis of regional differentiation of agriculture in Poland between 2001 and 2010.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2013, 14, 1; 37-52
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kilka uwag o odważniku z domniemanym znakiem runicznym znalezionej na Górze Chełmskiej w Koszalinie.
Autorzy:
Jankowski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1038469.pdf
Data publikacji:
2018-06-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Góra Chełmska
medieval weights
weight systems
mark
Opis:
The paper reinterprets the chronology of a weight found in 1961 on Góra (Mount) Chełmska in Koszalin and a symbol placed on one of its poles. The symbol was believed by some scholars to be a runic sign. A re-analysis of the find has revealed that the weight is not an early medieval artefact and the sign is not a rune but a municipal mark.
Źródło:
Slavia Antiqua: rocznik poświęcony starożytnościom słowiańskim; 2013, 54; 267-273
0080-9993
Pojawia się w:
Slavia Antiqua: rocznik poświęcony starożytnościom słowiańskim
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How to get rid of one of the weights in a two-weight Poincaré inequality?
Autorzy:
Franchi, Bruno
Hajłasz, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1207966.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
weights
doubling measures
metric spaces
Poincaré inequality
Opis:
We prove that if a Poincaré inequality with two different weights holds on every ball, then a Poincaré inequality with the same weight on both sides holds as well.
Źródło:
Annales Polonici Mathematici; 2000, 74, 1; 97-103
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some weighted inequalities for general one-sided maximal operators
Autorzy:
J. Martín-Reyes, F.
de la Torre, A.
Powiązania:
https://bibliotekanauki.pl/articles/1220679.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
one-sided maximal operators
Cesàro averages
weights
Opis:
We characterize the pairs of weights on ℝ for which the operators $M_{h,k}^{+}f(x) = \underset{\text{sup}}{c>x}h(x,c) \int_{x}^{c} f(s)k(x,s,c)ds$ are of weak type (p,q), or of restricted weak type (p,q), 1 ≤ p < q < ∞, between the Lebesgue spaces with the coresponding weights. The functions h and k are positive, h is defined on ${(x,c): x < c}$, while k is defined on ${(x,s,c): x < s < c}$. If $h(x,c) = (c-x)^{-β}$, $k(x,s,c) = (c-s)^{α-1}$, 0 ≤ β ≤ α ≤ 1, we obtain the operator $M_{α,β}^{+}f = \underset{c>x}{\text{sup}} 1/(c-x)^{β} \int_{x}^{c} f(s)/(c-s)^{1-α} ds$. For this operator, under the assumption 1/p - 1/q = α - β, we extend the weak type characterization to the case p = q and prove that in the case of equal weights and 1 < p < ∞, weak and strong type are equivalent. If we take α = β we characterize the strong type weights for the operator $M_{α,α}^{+}$ introduced by W. Jurkat and J. Troutman in the study of $C_α$ differentiation of the integral.
Źródło:
Studia Mathematica; 1997, 122, 1; 1-14
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Znaleziska wczesnośredniowiecznych akcesoriów kupieckich z Santoka na tle porównawczym
Finds of early medieval trade accessories from Santok in the light of comparative studies
Autorzy:
Zamelska-Monczak, Kinga
Powiązania:
https://bibliotekanauki.pl/articles/1037978.pdf
Data publikacji:
2020-03-21
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Santok
early Middle Ages
weights
folded scales
trade
trader
Opis:
This article presents a collection of early medieval trade accessories, folded scales and weights excavated by archaeologists on site no. 1 in Santok (Lubusz province). The collection of weights is formally and chronologically diverse. The oldest specimens come from structures dated back to the 4th quarter of the 9th century, the youngest to the 14th century. Metallographic analyses indicate that to produce the scales and weights, alloys of copper, different types of bronze and brass were used. The fact that exchange of goods in Santok took place earlier than in the other regions of Wielkopolska is evidence of close contacts with the then economic Baltic zone.
Źródło:
Slavia Antiqua: rocznik poświęcony starożytnościom słowiańskim; 2019, 60; 277-302
0080-9993
Pojawia się w:
Slavia Antiqua: rocznik poświęcony starożytnościom słowiańskim
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Weighted inequalities for one-sided maximal functions in Orlicz spaces
Autorzy:
Ortega Salvador, Pedro
Powiązania:
https://bibliotekanauki.pl/articles/1217888.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
one-sided maximal functions
weighted inequalities
weights
Orlicz spaces
Opis:
Let $M_{g}^{+}$ be the maximal operator defined by $M_{g}^{+}⨍(x) = \underset{h>0}{\text{sup}} (ʃ_{x}^{x+h} |⨍|g)/(ʃ_{x}^{x+h} g)$, where g is a positive locally integrable function on ℝ. Let Φ be an N-function such that both Φ and its complementary N-function satisfy $Δ_2$. We characterize the pairs of positive functions (u,ω) such that the weak type inequality $u({x ∈ ℝ | M_{g}^{+}⨍(x) > λ}) ≤ C/(Φ(λ)) \int_ℝ Φ(|⨍|)ω$ holds for every ⨍ in the Orlicz space $L_Φ(ω)$. We also characterize the positive functions ω such that the integral inequality $\int_ℝ Φ(|M_{g}^{+}⨍|)ω ≤ \int_ℝ Φ(|⨍|)ω$ holds for every $⨍ ∈ L_Φ(ω)$. Our results include some already obtained for functions in $L^p$ and yield as consequences one-dimensional theorems due to Gallardo and Kerman-Torchinsky.
Źródło:
Studia Mathematica; 1998, 131, 2; 101-114
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence results for Kirchhoff type systems with singular nonlinearity
Autorzy:
Firouzjai, A.
Afrouzi, G. A.
Talebi, S.
Powiązania:
https://bibliotekanauki.pl/articles/254877.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
sub-supersolution
infinite semipositone systems
singular weights
Kirchhoff-type
Opis:
Using the method of sub-super solutions, we study the existence of positive solutions for a class of singular nonlinear semipositone systems involving nonlocal operator.
Źródło:
Opuscula Mathematica; 2018, 38, 2; 187-199
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Weight of Seleucia in Pieria in Nea Paphos
Autorzy:
Łajtar, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1975511.pdf
Data publikacji:
2021-12-31
Wydawca:
Polska Akademia Nauk. Instytut Kultur Śródziemnomorskich i Orientalnych PAN
Tematy:
Cyprus
Nea Paphos
Seleucia in Pieria
ancient weights
agora
Opis:
Archaeological excavations carried out by a mission from the Jagiellonian University Institute of Archaeology on the site of the agora of Nea Paphos in Cyprus brought to light a lead weight with a Greek inscription giving the year 251 of an era and mentioning an agoranomos with the name Seleukos. On the basis of parallels, the author demonstrates that the weight must have been issued by the North Syrian city of Seleucia in Pieria, and the era used in the inscription is the civic era of Seleucia with the starting point in 109/108 BC, which allows one to date the object to AD 142/143. He argues that the structure where the object was found can tentatively be identified as agoranomeion of Nea Paphos.
Źródło:
Études et Travaux (Institut des Cultures Méditerranéennes et Orientales de l’Académie Polonaise des Sciences); 2021, 34; 255-263
2084-6762
2449-9579
Pojawia się w:
Études et Travaux (Institut des Cultures Méditerranéennes et Orientales de l’Académie Polonaise des Sciences)
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 64

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