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Search Results: 1 - 10 of 597 matches for " Katarina Kuki? "
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Different approaches to Kovalevskaya top
KukiKatarina
Theoretical and Applied Mechanics , 2008, DOI: 10.2298/tam0804347k
Abstract: In this paper we study the equations of motion of a rigid body around a fixed point in the case of Kovalevskaya. We give interpretation of the 'mysterious substitution of variables' in Sofia Kovalevskaya's paper. The present paper also connects integration procedure proposed by Golubov with the original equations obtained by S. Kovalevskaya.
Systems of Kowalevski type, discriminantly separable polynomials and quad-graphs
Vladimir Dragovi?,Katarina Kuki
Mathematics , 2011,
Abstract: We establish a new class of integrable {\it systems of Kowalevski type}, associated with discriminantly separable polynomials of degree two in each of three variables. Defining property of such polynomials, that all discriminants as polynomials of two variables are factorized as products of two polynomials of one variable each (denote one of the polynomial components as $P$), lead to an effective integration procedure. In the motivating example, the celebrated Kowalevski top, the discriminant separability is a property of the polynomial defining the Kowalevski fundamental equation. We construct several new examples of systems of Kowalevski type, and we perform their explicit integration in genus two theta-functions. One of the main tasks of the paper is to classify such discriminantly separable polynomials. Our classification is based on the study of structures of zeros of a polynomial component $P$ of a discriminant. From a geometric point of view, such a classification is related to the types of pencils of conics. We construct also discrete integrable systems on quad-graphs associated with discriminantly separable polynomials. We establish a relationship between our classification and the classification of integrable quad-graphs which has been suggested recently by Adler, Bobenko and Suris. As a fit back, we get a geometric interpretation of their results in terms of pencils of conics, and in the case of general position, when all four zeros of the polynomial $P$ are distinct, we get a connection with the Buchstaber-Novikov two-valued groups on $\mathbb {CP}^1$.
New Examples of Systems of the Kowalevski Type
Vladimir Dragovi?,Katarina Kuki
Mathematics , 2011, DOI: 10.1134/S1560354711050054
Abstract: A new examples of integrable dynamical systems are constructed. An integration procedure leading to genus two theta-functions is presented. It is based on a recent notion of discriminantly separable polynomials. They have appeared in a recent reconsideration of the celebrated Kowalevski top, and their role here is analogue to the situation with the classical Kowalevski integration procedure.
Dissimilarities in Social Support as Described by Swedish- and Foreign-Born Persons Diagnosed with Type 2 Diabetes and Living in Sweden  [PDF]
Katarina Hjelm, Carina Berter?
Open Journal of Nursing (OJN) , 2014, DOI: 10.4236/ojn.2014.43025
Abstract:

Diabetes (DM) requires self-care that is demanding and may cause stress. Social support can buffer effects of stress. No previous study has been found comparing perceptions of foreign-born persons with DM, concerning the content of and need for social support with a population of origin. The aim was to compare the meaning of support and its impact on the life situation in Swedish- and foreign-born persons diagnosed with type 2 DM living in Sweden. A purposive sample of 74 persons; 34 foreign- and 40 Swedish-born, aged 32-80 years, diagnosed with type 2 DM, was included. The foreign-born persons were mostly Middle Eastern and Ex-Yugoslavian refugees. Mixed methods were used and data were collected by qualitative interviews and quantitative data collected by the Norbeck Social Support Questionnaire (NSSQ). Studying the figures measured by NSSQ, no significant differences were found according to gender but foreign-born men scored lower than Swedish, especially in emotional support and aid. The main findings showed that respondents, irrespective of origin, described the meaning of the concept of support mainly as information support in learning to manage DM. However, foreign-born persons also focused on medical support with regular follow-ups while Swedes emphasized the need for emotional support. Foreign- and Swedish-born persons are in general more similar than dissimilar in describing the meaning, need and impact of support. Irrespective of origin they want to learn to manage their disease and thus desire and need regular follow-up and information immediately from being diagnosed. Further studies are needed as the study is based on a limited sample.

Limited Focus on the Use of Health Care by Elderly Migrants—A Literature Review  [PDF]
Katarina Hjelm, Bj?rn Albin
Open Journal of Nursing (OJN) , 2014, DOI: 10.4236/ojn.2014.46049
Abstract:

Our premise for this literature review is the global demographic change caused by the world’s population living longer and becoming older, and extensive international migration leading to multicultural societies. Increasing age leads to health problems, often long-term or chronic, requiring investments in health care. Worse health and dissimilarities in pattern of morbidity/ mortality have been found in foreign-compared to Swedish-born persons, so it is reasonable to assume that this affects use of health care. The exploratory review focuses on elderly migrants’ (>65 years) use of healthcare. The databases Pub Med, EBSCO, CINAHL and ERIC were searched in 2000-2013. A limited number of studies were found; few had a comparative approach, most were from the USA, and focused on migrants from the former Soviet Union or countries in South-East Asia. A range of factors were identified that influence patterns of health care use: language fluency, ability to communicate, self-reported health status, prevalence of chronic disease, physical distance from care provision, availability of transport to reach care, cost of care, the health insurance system, cultural norms and values regarding different forms of care, level of education, and length of residence in the host country. Most studies treated health care from a general perspective and collected data from community and hospital settings, without analysing usage separately. Some studies indicated elderly migrants making use of health care less than other groups but the pattern is not unambiguous: other studies show that there is an overuse of health care. It is therefore difficult to show any particular pattern, or possible differences in use, regarding community versus in-patient care. Studies focusing on migrants’ actual use of health care are few and further research is needed, especially because elderly people form the largest group of users of health care and will be even larger in the future.

The IQ Motif is Crucial for Cav1.1 Function
Katarina Stroffekova
Journal of Biomedicine and Biotechnology , 2011, DOI: 10.1155/2011/504649
Abstract: Ca2
An update on the treatment of type 1 and type 2 diabetes mellitus: focus on insulin detemir, a long-acting human insulin analog
Katarina Raslova
Vascular Health and Risk Management , 2010, DOI: http://dx.doi.org/10.2147/VHRM.S10397
Abstract: n update on the treatment of type 1 and type 2 diabetes mellitus: focus on insulin detemir, a long-acting human insulin analog Review (5717) Total Article Views Authors: Katarina Raslova Published Date May 2010 Volume 2010:6 Pages 399 - 410 DOI: http://dx.doi.org/10.2147/VHRM.S10397 Katarina Raslova Metabolic Center Ltd and Slovak Medical University, Bratislava, Slovak Republic Abstract: Basal insulin analogs are used to minimize unpredictable processes of NPH insulin. Modification of the human insulin molecule results in a slower distribution to peripheral target tissues, a longer duration of action with stable concentrations and thus a lower rate of hypoglycemia. Insulin detemir is a basal insulin analog that provides effective therapeutic options for patients with type 1 and type 2 diabetes. For glycemic control, no significant differences were found in HbA1c levels compared with NPH and insulin glargine. It is comparable with insulin glargine in significantly reducing rates of all types of hypoglycemia. Clinical studies have demonstrated that detemir is responsible for significantly lower within-subject variability and no or less weight gain than NPH insulin and glargine. Recent pharmacodynamic studies have shown that detemir can be used once daily in many patients with diabetes. Together with patient-friendly injection devices and dose adjustments, it provides a treatment option with the potential to lower the key barriers of adherence to insulin therapy in type 2 diabetes. Recent guidelines for treatment of type 2 diabetes suggest starting intensive therapy of hyperglycemia at an early stage of diabetes and recommend therapeutic options that provide the possibility of reaching HbA1c goals individually, with a low risk of hypoglycemia or other adverse effects of treatment. The properties of insulin detemir match these requirements.
THE ROLE OF DIFFERENT RHEOLOGICAL MODELS IN ACCURACY OF PRESSURE LOSS PREDICTION
Katarina Simon
Rudarsko-Geolo?ko-Naftni Zbornik , 2004,
Abstract: Hydraulics play an important function in many oil field operations including drilling, completion, fracturing, acidizing, workover and production. The standard API methods for drilling fluid hydraulics assume either power law or Bingham plastic rheological model. These models and corresponding hydraulic calculations do provide a simple way for fair estimates of hydraulics for conventional vertical wells using simple drilling fluids, such as bentonite fluids. However, nowdays with many wells drilled deep, slim or horizontal using complex muds with unusual behaviour (such as tested MMH mud), it is necessary to use appropriate rheological model for mathematical modelling of fluid behaviour. Oil and gas reservoirs in Croatia have been under production for quite a while and the probability to discover new deposits of hydrocarbons is rather small. Therefore attempts have been made to maintain the gas and oil exploitation at the present level. One of possible ways to meet this target is re-entry wells drilling. The diameter of such wells in reservoir is smaller than 0,1524 m (6 in). Accurate modelling of annular pressure losses becomes therefore an important issue, particularly in cases where a small safety margin exists between optimal drilling parameters and wellbore stability, what is the case in re-entry wells. The objective of the paper is to show the influence of well geometry and accuracy of fluid rheological properties modelling to the distribution of pressure losses in a slimhole well.
Maxima – An Open Alternative for Engineering Education
Katarina Zakova
International Journal of Engineering Pedagogy , 2011, DOI: 10.3991/ijep.v1i1.1598
Abstract:
Carnian Foraminifera from the Kucler quarry at Lesno Brdo (Slovenia)
Katarina Oblak
Geologija , 2001,
Abstract:
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