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Wyświetlanie 1-15 z 204
Tytuł:
Consistency examination of linear inequality system
Autorzy:
Brzeskwiniewicz, Henryk
Kłaczyński, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/747539.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Linear inequalities
Opis:
.
An investigation of the consistency of a linear inequality system is considered. It is proven that the system of linear inequalities Ax≥b is consistent if and only if for any generalized inverse A− of a matrix A the system of equations (I−AA−)v=−(I−AA−)b has a nonnegative solution for the vector v. Consistency of the above system does not depend on the choice of the matrix A−. The paper also presents methods for investigating the existence of nonnegative solutions of systems of linear equations.
Źródło:
Mathematica Applicanda; 1997, 26, 40
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On coefficient inequalities in the Carathéodory class of functions
Autorzy:
Lecko, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1207925.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Carathéodory class
coefficient inequalities
Opis:
Some inequalities are proved for coefficients of functions in the class P(α), where α ∈ [0,1), of functions with real part greater than α. In particular, new inequalities for coefficients in the Carathéodory class P(0) are given.
Źródło:
Annales Polonici Mathematici; 2000, 75, 1; 59-67
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some new inequalities of Hermite-Hadamard type for GA-convex functions
Autorzy:
Dragomir, Sever S.
Powiązania:
https://bibliotekanauki.pl/articles/747264.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Convex functions
integral inequalities
GA-convex functions
Hermite-Hadamard inequalities
Opis:
Some new inequalities of Hermite-Hadamard type for GA-convex functions defined on positive intervals are given. Refinements and weighted version of known inequalities are provided. Some applications for special means are also obtained.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica; 2018, 72, 1
0365-1029
2083-7402
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isoperimetric problem for uniform enlargement
Autorzy:
G. Bobkov, S.
Powiązania:
https://bibliotekanauki.pl/articles/1220147.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
isoperimetric inequalities
uniform enlargement
Opis:
We consider an isoperimetric problem for product measures with respect to the uniform enlargement of sets. As an example, we find (asymptotically) extremal sets for the infinite product of the exponential measure.
Źródło:
Studia Mathematica; 1997, 123, 1; 81-95
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Social inequalities – theoretical considerations from an interdisciplinary perspective
Autorzy:
Kiniorska, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/1945626.pdf
Data publikacji:
2021-11-29
Wydawca:
Uniwersytet Gdański. Instytut Geografii
Tematy:
social inequalities
exclusion
poverty
Opis:
Contemporary considerations on social inequalities are more and more often of an interdisciplinary character. Particular interest in the above-mentioned issues becomes noticeable in sociological and economic sciences and is also gradually increasing in geographical disciplines. The aim of this study is to present the problem of social inequalities from an interdisciplinary perspective. The analysis highlights the contribution of research conducted by representatives of sociology, economics, and geography. The methods of classification and identification of factors shaping social inequalities were also discussed.
Źródło:
Journal of Geography, Politics and Society; 2021, 11, 3
2084-0497
2451-2249
Pojawia się w:
Journal of Geography, Politics and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Not willing to or not able to? Teachers on their role in addressing social inequalities in education
Nie chcą czy nie mogą? Nauczyciele o swojej roli w redukowaniu społecznych nierówności edukacyjnych
Autorzy:
Zahorska, Marta
Powiązania:
https://bibliotekanauki.pl/articles/22307934.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
teachers
school
educational inequalities
Opis:
Sociologists of education are often divided into those who are interested in ‘macro’ and those interested in ‘micro’ theories. This paper is an attempt to show how it is difficult to explain what is taking place in schools by concentrating only on the micro (school) level. Explanation should be sought in school system, educational politics, etc. My paper presents the initial conclusions of my research on educational inequalities, which is being conducted at primary and middle schools in several towns and villages in Poland. It is not an article on educational inequalities per se; the purpose of this paper is much more limited. The aim of the project is to present the opinions of teachers with regard to the possibilities of schools to reduce inequalities. The statements made by teachers of various classes and schools, located in both small and big towns, will be compared. The particular feature of this research lies in its methodology. We used qualitative and not quantitative methods, the latter of which are the most popular in analyzing educational inequalities. We were interested in the mechanisms involved in the categorization of ‘good’ and ‘bad’ students. Our study is based on the observation of selected classes, interviews (IDI) with teachers, school principals and school counsellors. We also talked with representatives of local governments, who were responsible for education, and representatives of social care institutions, but this paper focuses only on the interviews conducted in the schools.
Źródło:
Acta Universitatis Lodziensis. Folia Sociologica; 2014, 49; 129-146
0208-600X
2353-4850
Pojawia się w:
Acta Universitatis Lodziensis. Folia Sociologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Weighted inequalities for monotone and concave functions
Autorzy:
Heinig, Hans
Maligranda, Lech
Powiązania:
https://bibliotekanauki.pl/articles/1388599.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
weighted integral inequalities
weighted Hardy inequalities
weighted Hardy inequalities for monotone functions
weighted Favard-Berwald inequality
reverse Hölder inequality
concave functions
Opis:
Characterizations of weight functions are given for which integral inequalities of monotone and concave functions are satisfied. The constants in these inequalities are sharp and in the case of concave functions, constitute weighted forms of Favard-Berwald inequalities on finite and infinite intervals. Related inequalities, some of Hardy type, are also given.
Źródło:
Studia Mathematica; 1995, 116, 2; 133-165
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Osteoporosis: a social problem in the elderly population
Autorzy:
Kucharska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/1197955.pdf
Data publikacji:
2018-02-01
Wydawca:
Akademia Ignatianum w Krakowie
Tematy:
osteoporosis
elderly
fractures
social inequalities
Opis:
RESEARCH OBJECTIVE: The aim of this review is to present a broader scope on osteoporosis – both as a medical problem and as a major social burden. THE RESEARCH PROBLEM AND METHODS: Osteoporosis is a systemic skeletal disease, characterized by low bone mass, leading to increased bone fragility and fractures. It does not only lead to major medical expenses, lower health-related quality-of-life but also strains the population with significant social burden. As modern science is intensively exploring the problem of osteoporosis, new research articles expanding our knowledge on this disease come out weekly. This growing body of research calls for an up-to-date review of the existing state of knowledge on osteoporosis. THE PROCESS OF ARGUMENTATION: This manuscript presents and overview on osteoporosis and associated problems such as fractures in the following order (1) Etiology and pathogenesis of osteoporosis, (2) Osteoporosis risk factors, (3) Epidemiology of osteoporosis, (4) Aging of the Polish population, (5) Clinical consequences of osteoporosis, (6) Criteria of the World Health Organization (WHO) for Caucasian women after menopause, (7) Morbidity and mortality associated with osteoporotic fractures, (8) Risk factors related to the collapse of the condition of osteoporotic patients, (9) Bone fragility and falls, (10) Recognizing osteoporosis, (11) Prevention and treatment of osteoporosis, (12) Cost of treating fractures, (13) Fracture liaison service, (14) Senior care, (15) Purpose of modern geriatrics, (16) Social inequalities and osteoporosis. RESEARCH RESULTS: The two major determinants of risk in the development of osteoporosis are peak bone mass and rate of bone loss. These two determinants are influenced by a number of genetic (non-modifiable) and environmental (partly modifiable, and modifiable) factors. Osteoporosis is becoming increasingly prevalent with the aging of the world population. Worldwide, more than 200 million people are suffering from osteoporosis, and 1 in 2 women and 1 in 4 men over 50 will have an osteoporosis-related fracture in their lifetime. About 5% of falls result in fractures, half of which are proximal femur fractures. Out of all falls leading to fractures, 10‑25% result in injury or requirement of specialized medical care. Falls are one of the main causes of disability and the fifth most common cause of death in people over 75 years of age. CONCLUSIONS, INNOVATIONS AND RECOMMENDATIONS: This review provides a concise overview om osteoporosis as a linked medical and social problem. It also identified a number of knowledge gaps necessary to fill in order to progress our knowledge on osteoporosis diagnosis, prevention and treatment. Understanding patients’ preferences and needs will allow to align them with appropriate service models which are likely to optimize patient outcomes.
Źródło:
Horyzonty Wychowania; 2017, 16, 40; 37-57
1643-9171
2391-9485
Pojawia się w:
Horyzonty Wychowania
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systems of variational inequalities related to economic equilibrium
Autorzy:
Naniewicz, Z.
Nockowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/970931.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
optimization problem
variational inequalities
duality
Opis:
In the paper a new approach to the Walrasian general equilibrium model of economy is presented. The classical market clearing condition is replaced by suitably formulated variational inequality. It states that the market clears for a commodity if its equilibrium price is positive; otherwise, there may be an excess supply of the commodity in equilibrium and then its price is zero. Such approach enables establishing new existence results without assumptions which were fundamental for the currently used methods: (i) Dis-utility functions are not required to be strictly convex and they may attain their minima in the consumption sets (the local nonsatiation of preferences is not required). (ii) The boundary of the positive orthant is allowed for the price vector in equilibrium. It allows for investigation of certain new problems, e.g. bankruptcy conditions.
Źródło:
Control and Cybernetics; 2007, 36, 4; 889-909
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On new multiple extension of Hilbert’s integral inequality (2)
Autorzy:
Sulaiman, W.T.
Powiązania:
https://bibliotekanauki.pl/articles/745879.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Inequalities
Hilbert inequality
Holder inequality
Opis:
Via Laplace transformation some new generalization of Hardy-Hilbert’s integral inequality is given.
Źródło:
Commentationes Mathematicae; 2007, 47, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On new multiple extension of Hilbert’s integral inequality
Autorzy:
Sulaiman, Waadallah Tawfeeq
Powiązania:
https://bibliotekanauki.pl/articles/746566.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Inequalities
Hilbert inequality
Holder inequality
Opis:
This paper gives a new multiple extension of Hilbert’s integral inequality generalizing many known results.
Źródło:
Commentationes Mathematicae; 2006, 46, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development Economics and the issues of poverty and social inequalities
Autorzy:
Piasecki, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/652781.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
development economics
poverty
social inequalities
Opis:
Development economics emerged as a separate discipline of economic science in the 1950s but it wasn’t until the 1960s and mid-1970s that it began to draw serious attention. Gradually, an extensive literature concerning economic development was built up. In the 1980s it turned out, however, that despite some successes, the economic growth in most of medium and less developed countries was not as high as expected. During the 1980s and 1990s, the so-called Washington Consensus dominated the theory and practice of economic development. This notion covered the whole range of activities that were to lead the developing countries to improved welfare and prosperity. It included strict fiscal and monetary policies, deregulation, foreign trade and capital flow liberalisation, elimination of government subsidies, moderate taxation, liberalisation of interest rates, maintaining low inflation, etc. Based on the developmental experience of over past ten years, a new paradigm of development is emerging, the elements of which can be described as follows: (1) the basic economic environment should encourage the long-term investment in (2) the economy should have a high sensitivity to market stimuli (3) human capital must complement physical capital (4) due to the fast flow and absorption of information in the rapidly changing world, the key role is played by institutions and mechanisms that jointly respond to stimuli (5) wherever market failures occur, an intervention of the state should be market-friendly 6) social equality must be guaranteed if the economic development is to take place on a sustainable basis.
Źródło:
Annales. Etyka w Życiu Gospodarczym; 2017, 20, 6; 123-132
1899-2226
2353-4869
Pojawia się w:
Annales. Etyka w Życiu Gospodarczym
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:
Continuity of real valued subquadratic functions
Autorzy:
Kominek, Zygfryd
Troczka-Pawelec, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/745360.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
subquadratic functions
semicontinuity
functional inequalities
Opis:
The aim of this paper is to prove a regularity theorem for real valued subquadratic mappings that are solutions of the inequality \[ \varphi (x + y) + \varphi(x - y) \leq 2\varphi(x) + 2\varphi(y),\quad x, y \in X, where \(X = (X, +)\) is a topological group.
Źródło:
Commentationes Mathematicae; 2011, 51, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Health inequalities among students of lower secondary schools in Bytom, Poland
Autorzy:
Wypych-Ślusarska, A.
Czech, E.
Kasznia-Kocot, J.
Słowiński, J.
Niewiadomska, E.
Skrzypek, M.
Malinowska-Borowska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2081568.pdf
Data publikacji:
2018
Wydawca:
Instytut Medycyny Wsi
Tematy:
ealth inequalities
socio-economic status
teenagers
Opis:
Introduction and objective. Poverty and low level of education pose the biggest threats to public health. Moreover, they generate inequalities in public healthThe aim of the study was to check if there are any inequalities in health among teenagers living in Bytom, Poland. Materials and method. In 2011 and 2012, an epidemiological cross-sectional study was conducted on 1,099 students from lower secondary schools from Bytom. The students completed a questionnaire which was based on an earlier Health Behaviour in School-aged Children study (HBSC). Socio-Economic Status of teenagers (SES) was determined according to the Family Affluence Scale (FAS), the intensity of possible problems in the place of residence and on parents’ education. Impact of SES on health self-assessment, asthma, pneumonia, bronchitis with addition to spinal deformities were also investigated. Results. A good or very good level of health was declared by students from families representing a high level of FAS and residing in a more peaceful, less troubled neighbourhood. The highest level of asthma prevalence (10.9%) occurred among students from families with a low level of FAS. The students from families with high FAS were less affected by spinal deformities (34.6%). Students living in a troubled neighbourhood more often suffered from bronchial asthma, pneumonia, bronchitis and spinal deformities. Conclusions. The level of family affluence depends on the parents’ education and all the analysed health problems occurred more frequently in children whose parents had completed at least general secondary education. A high economic standard of living and a peaceful neighbourhood determined good or very good health self-assessment among the surveyed students.
Źródło:
Annals of Agricultural and Environmental Medicine; 2018, 25, 1; 4-8
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 204

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