Simply-connected vortex-patch shallow-water quasi-equilibria

This work is supported by a UK Natural Environment Research Council studentshipWe examine the form, properties, stability and evolution of simply-connected vortex-patch relative quasi-equilibria in the single-layer ƒ-plane shallow-water model of geophysical fluid dynamics. We examine the effects of the size, shape and strength of vortices in this system, represented by three distinct parameters completely describing the families of the quasi-equilibria. Namely, these are the ratio γ=L/LD between the horizontal size of the vortices and the Rossby deformation length; the aspect ratio λ between the minor to major axes of the vortex; and a potential vorticity (PV)-based Rossby number Ro=q′/ƒ, the ratio of the PV anomaly q′ within the vortex to the Coriolis frequency ƒ. By defining an appropriate steadiness parameter, we find that the quasi-equilibria remain steady for long times, enabling us to determine the boundary of stability λc=λc(γ, Ro), for 0.25≤γ≤6 and |Ro|≤1. By calling two states which share γ,|Ro| and λ ‘equivalent’, we find a clear asymmetry in the stability of cyclonic (Ro>0) and anticyclonic (Ro<0) equilibria, with cyclones being able to sustain greater deformations than anticyclones before experiencing an instability. We find that ageostrophic motions stabilise cyclones and destabilise anticyclones. Both types of vortices undergo the same main types of unstable evolution, albeit in different ranges of the parameter space, (a) vacillations for large-γ, large-Ro states, (b) filamentation for small-γ states and (c) vortex splitting, asymmetric for intermediate-γ and symmetric for large-γ states.Publisher PDFPeer reviewe

Set-theoretic and algebraic properties of certain families of real functions

Given two families of real functions F1 and F2 we consider the following question: can every real function f be represented as f = f 1 + f2, where f1 and f2 belong to F1 and F2 , respectively? This question leads to the definition of the cardinal function Add: Add( F1,F2 ) is the smallest cardinality of a family F of functions for which there is no function g in F1 such that g + F is contained in F2 . This work is devoted entirely to the study of the function Add for different pairs of families of real functions. We focus on the classes that are related to the additive properties and generalized continuity.;Chapter 2 deals with the classes related to the generalized continuity. In particular, we show that Martin\u27s Axiom (MA) implies Add(D,SZ) is infinite and Add(SZ,D) equals to the cardinality of the set of all real numbers. SZ and D denote the families of Sierpinski-Zygmund and Darboux functions, respectively. As a corollary we obtain that the proposition: every function from R into R can be represented as a sum of Sierpinski-Zygmund and Darboux functions is independent of ZFC axioms.;Chapter 3 is devoted entirely to the classes related to the concept of additivity. We introduce the definition of Hamel functions. We say that a real function is a Hamel function if its graph is a Hamel basis for the plane. Main result of this chapter is the theorem that every real function can be represented as the pointwise sum of two Hamel functions.;In Chapter 4 we investigate the function Add for pairs of classes such that one relates to the generalized continuity and the other to the additive properties

Johann Christoph Brotze: Bиставка: Колекція малюнків й описів Ліфляндії Йоганна Кристофа Бротце (1742-1823) в Академічній бібліотеці Латвійського університету, 14 вересня - 1 листопада 2015 року, Наукова бібліотека Одеського національного університету імені І.І.Мечникова, вул. Преображенська 24, Одеса

Structures and material combinations, tailored for multiple purposes, are within the reach of vehicle manufacturers. Besides reducing the environmental impact of the transportation sector these multi-functional structures can reduce costs, such as development, manufacturing and maintenance, and at the same time offer improved comfort to the passengers. This thesis sets out to develop multi-functional design algorithms and evaluate concepts for future composite high speed train car bodies with the objective of optimising the amount of mass needed to fulfil all functions of the structure. In a first step complete composite car bodies were developed, optimised and evaluated based on global stiffness requirements and load cases. The knowledge gained in this step was used as requirements for the strength and stiffness of panels during the continued development of the multi-functional optimisation which, besides strength and stiffness, later also considers sound transmission, thermal insulation, geometric restrictions, manufacturability and fire safety. To be able to include fire safety in the analysis, a method for simulating the high temperature response of layered composite structures was needed, and developed. Significant weight reductions are proven when utilising carbon fibre in the load carrying structure of the vehicle, on component level as high as 60%. Structures can be made significantly thinner when using the algorithms developed in this thesis and wall thickness is reduced by 5-6 cm. Analysis carried out and extensive literature surveys also suggest significant cost savings in manufacturing, maintenance and use-phase, even thou the raw material cost can be significantly higher as compared to the conventional steel or aluminium alternatives. Results from drive cycle simulations showed that the benefit, with respect to reduced energy consumption, is in the range of 0.5-0.8% per reduced weight percentage, comparable to both automotive and air applications. The algorithms and methods established in this thesis can be directly applied for the development and analysis of future high speed train car bodies.QC 20130521</p

Implicit Methods for Studying Attitudes: Modern Approach to Research in Social Sciences

The aim of paper is to analyze the experience of the experimental studying of attitudes by implicit methods in social sciences. It is an experience of collaborative research of graduates and professors to develop a new tool - experimental procedures of the implicit association test and unconscious priming to measure various psychological constructs.The involvement of students into the creative atmosphere underpins the formation of a creative, competent and responsible psychologist who could learn how to work in any field of psychology. The concisely presented results of empirical research are focused on the study of ethnic attitudes, hardiness, gambling addiction and addiction to alcohol with implicit methods and self-assessment procedures. On the example of gambling addiction considered in detail,the benefits of implicit measurements were revealed. Implicit methods are successfully used not only in social psychology and its applied fields, but also in pedagogy (in revealing creative abilities)

RESEARCH OF IMPLICIT ATTITUDES TOWARDS GAMBLING FOR GAMBLERS AND NON-GAMBLERS

The importance of studying attitudes towards gambling has been recently recognized in the field of gambling. Research aim is to examine whether non-gamblers and gamblers exhibit both positive and negative implicit attitudes towards gambling-related stimuli. Research questions: (I) What is the valence of implicit associations with gambling among gamblers and non-gamblers? (II) Are the differences in attitudes towards gambling revealed by explicit and implicit methods among gamblers and non–gamblers? (III) Is there a consistency between results obtained by implicit measures and explicit measures of attitude towards gambling? Methods: Participants - 98, age 18-58, Mdn=34 years. Groups: Social Gamblers – 24, Problem Gamblers – 25, Non-Gamblers – 49. Implicit measures: Modified version of Single-Category Implicit Association Test (SC-IAT). Explicit measures: “Gambling Attitudes and Beliefs (GABS)” and “Gamblers anonymous twenty questions (GA-20)”. Results and Conclusions. (I) Both positive and negative implicit gambling associations were found in each of the groups. (II) Explicit attitudes towards gambling are most pronounced in social gamblers and most not pronounced in non-gamblers. Differences in implicit associations with gambling among the groups were not found. (III) In case of positive implicit associations, a negative correlation between the results of explicit and implicit measurements was found. It is possible that the use of negative implicit associations will contribute to the classification of gamblers with low, moderate and high risk

RESEARCH OF RELATIONSHIPS BETWEEN IMPLICIT AND EXPLICIT HEALTHY OR UNHEALTHY FOOD RELATED COGNITIONS

The research aim is to study the relationships between implicit and explicit healthy or unhealthy food related cognitions. Research questions: (1) Is there a relationship between the results of measurements of healthy or unhealthy food related cognitions by implicit and self-assessment procedures? (2) How are healthy or unhealthy food related implicit and explicit cognitions and somatic properties (weight, height, body mass index (BMI), age, sex) related? (3) What common factors underlie the relationship between implicit and explicit healthy or unhealthy food related cognitions and somatic properties? (4) What contribution to food related implicit cognitions is made by explicit attitudes (preference of healthy or unhealthy food, the recentness of consumption, awareness of healthy or unhealthy food, sensations of taste) and somatic properties? (5) What contribution to each food related explicit cognition is made by food related implicit cognitions, the other food related explicit cognitions and somatic properties? Method. Participants – 83 students, aged 19-35, M = 25.75, SD = 4.63 years. Measurements: the specially designed IAT and corresponding self-assessment procedures. Results. There is a relationship between the results of implicit and explicit measurements. The main contribution to implicit preference for food is made by the weight, sex and explicit preference, based on recentness of its consumption.

IMPLEMENTATION OF STATE SOCIAL POLICY IN UKRAINE

У статті досліджено стан та перспективи розвитку соціальної політики в Україні. Метою статті є визначення основних напрямів реалізації соціальної політики в Україні, склад суб’єктів соціальної політики. Методи, які використовувались      при написанні статті: аналітичний, статистичний, монографічний. В ході дослідження виявлено закономірності перебігу соціально-економічних перетоврень в Укріїні та їх вплив на реалізацію соціальної полтіики. Підкреслено безсистемність у реалізації соціальної політики в країні. Окреслено основні напрями реформуваня системи соціальних виплат та пільг, які мають бути підпорядковані наступним цілям: конституційним, політичним, економічним, соціальним, фінансовим.Ключові слова: політика, соціальна політика, механізми, пільги та виплати.The article explores the state and prospects of social policy development in Ukraine. The purpose of the article is to determine the main directions of social policy implementation in Ukraine, the subject composition of social policy. Methods which was used in the article: analytical, statistical, monographic. The study revealed the patterns of socio-economic turmoil in Ukraine and their impact on the implementation of social policy. The haphazardness in the implementation of social policy in the country is emphasized. The main directions of reforming the system of social benefits and benefits are outlined, which must be subordinated to the following goals: constitutional, political, economic, social, financial.Keywords: politics, social policy, mechanisms, benefits and payments

STUDY OF ATTITUDES TOWARDS THE USE OF MOBILE PHONES WHILE DRIVING WITH IMPLICIT ASSOCIATION TESTS AND SELF-ASSESSMENT PROCEDURES

Analysis of studies shows that in studying attitudes towards risky and safe driving only few researches are based on the use of implicit methods. The aim of the study: the study of attitudes towards the use of mobile phones while driving with the use of Implicit Association Tests and self-assessment procedures. Participants: 69, age 21-59, M = 42, SD = 9.02, 27 female and 42 male, all with B category driver licenses, driving experience 9-24 years. Implicit measurements: two experimental procedures of the Implicit Association Test (IAT) developed by the authors for measuring attitudes towards the use of mobile phones while driving: IAT and self-concept IAT Explicit measurements: a self-assessment procedure developed by the authors "Scale of measuring attitudes towards the use of mobile phones while driving," cross-cultural Personality Questionnaire ZKPQ-50-CC (Aluja, Rossier, García, Angleitner, Kuhlman, Zuckerman, 2006). A positive relationship between the results of measurements using IAT and self-concept IAT was found in participants with high anxiety. The effect size obtained with the IAT is larger than the effect size obtained with self-concept IAT. A relationship between the results of measurement of attitudes towards the use a mobile phone while driving, measured by experimental procedures and the personal factors was found