Rossby wave energy: a local Eulerian isotropic invariant

Author(s):  
Leo Maas ◽  
Rudolf Kloosterziel

<p>Conservation laws relate the local<span>  </span>time-rate-of-change of the spatial integral of a density function to the divergence of its<span>  </span>flux through the boundaries of the integration domain. These provide integral constraints on the spatio-temporal development<span>  </span>of a field. Here we show<span>  </span>that<span>  </span>a new type of conserved quantity exists, that does not require integration over a particular domain but which holds locally,<span>  </span>at any point in the field.<span>  </span>This is derived for the pseudo-energy density of<span>  </span>nondivergent Rossby waves where<span>  </span>local invariance is obtained for (1) a single plane wave, and (2) waves produced by an impulsive point-source of vorticity.<span> </span></p><p>The definition of pseudo-energy used here<span>  </span>consists of a conventional kinetic part, as well as an unconventional pseudo-potential part, proposed by<span>  </span>Buchwald (1973).<span>  </span>The anisotropic nature of the nondivergent energy flux that appears in response to the point source further clarifies the role of the beta plane in the<span>  </span>observed western intensification of ocean currents.<span> </span></p>

2009 ◽  
Vol 37 (1/2) ◽  
pp. 43-81
Author(s):  
Patrizia Calefato

This paper focuses on the semiotic foundations of sociolinguistics. Starting from the definition of “sociolinguistics” given by the philosopher Adam Schaff, the paper examines in particular the notion of “critical sociolinguistics” as theorized by the Italian semiotician Ferruccio Rossi-Landi. The basis of the social dimension of language are to be found in what Rossi-Landi calls “social reproduction” which regards both verbal and non-verbal signs. Saussure’s notion of langue can be considered in this way, with reference not only to his Course of General Linguistics, but also to his Harvard Manuscripts.The paper goes on trying also to understand Roland Barthes’s provocative definition of semiology as a part of linguistics (and not vice-versa) as well as developing the notion of communication-production in this perspective. Some articles of Roman Jakobson of the sixties allow us to reflect in a manner which we now call “socio-semiotic” on the processes of transformation of the “organic” signs into signs of a new type, which articulate the relationship between organic and instrumental. In this sense, socio-linguistics is intended as being sociosemiotics, without prejudice to the fact that the reference area must be human, since semiotics also has the prerogative of referring to the world of non-human vital signs.Socio-linguistics as socio-semiotics assumes the role of a “frontier” science, in the dual sense that it is not only on the border between science of language and the anthropological and social sciences, but also that it can be constructed in a movement of continual “crossing frontiers” and of “contamination” between languages and disciplinary environments.


2021 ◽  
pp. 123-130
Author(s):  
Ihor Honak

Purpose. The aim of the article is elaboration of theoretical and practical aspects of definition and functioning of cryptocurrencies as money. Methodology of research. The following methods were used in the study: statistical analysis and comparison – in the study of problematic aspects of the definition of cryptocurrency as a kind of money; logical assessment – in substantiating the principles of determining cryptocurrency as a kind of money; generalization – in the process of formulating conclusions based on the results of the analysis. Findings. It is established that money is a financial asset with high liquidity, which can be quickly converted into paper money or coins, serve as an intermediary in money circulation (i.e. play the role of equivalent in exchange) and can be used for savings and therefore anything that can function as money, are money (including cryptocurrency coins). It is substantiated that cryptocurrency coins, as a type of money, perform the following functions: there is a potential to perform the function of a measure of value after reducing the significant volatility of the value of cryptocurrencies; partly as a medium of exchange due to high volatility, regulatory resistance and low prevalence, but prevalence will increase as traditional payment systems begin to integrate cryptocurrencies, cryptocurrencies have high convenience and inclusiveness, have the potential to reduce transaction costs, increase settlement speeds, develop cryptocurrency markets and increasing their prevalence; due to opposition from ESG investors and regulators, low confidence from a significant number of citizens (especially over the age of forty) and a significant speculative component of cryptocurrency coins, only partially serve as a means of accumulation, however, the demand for cryptocurrencies from investors is constantly growing. Originality. The definition of cryptocurrency (cryptocurrency coin, cryptocoin) as a new digital type of money, which can measure the value of goods, services and other currencies, used for circulation, savings and investment, protected by cryptographic code with the inability to counterfeit or copy, and issue which everyone has the opportunity with the Internet and the necessary equipment with complete anonymity of the issuer (miner). Practical value. The main results of the conducted study will create favourable conditions for a better understanding of cryptocurrency as a new type of money, which will allow them to be more widely used in the economic activities of businesses and countries. Key words: money, cryptocurrency, cryptocoin, cryptocurrency coin, mining, cryptocurrency functions, Ethereum, Monero, monetary aggregate.


2019 ◽  
Vol 7 (1) ◽  
pp. 142-148
Author(s):  
Ekaterina D. Lukyanova

The article considers the problem of the development of artificial intelligence, its ambivalent impact on society and humanity. There are the description and definition of artificial intelligence, the problem field was defined. We conducted a study of the manifest and latent functions of artificial intelligence, which can provoke postponed risks. We considered the vision of artificial intelligence as a complex socio-biotechnological hybrid and a qualitatively new mechanism of social control. The achievements and risk-based role of artificial intelligence in modern complex society was estimated. Particular attention is paid to the nature of knowledge about the phenomenon of artificial intelligence, acquiring an interdisciplinary character. Some deferred risks related to the functioning of artificial intelligence are indicated. The factors contributing to the creation of a socio-biotechnological hybrid in the form of artificial intelligence are considered in the context of the riskological turn. The risks of a new type of irrational rationality are considered, the cause of which, according to the author, is the introduction of IT and artificial intelligence, the consequences of rationality are given. The problem of the risk of deintimization, depriving a person of opportunities and the right to personal information is noted. That problem may entail new manifestations of alienation in the form of the dehumanization of social and natural realities. due to the introduction in many programs of artificial intelligence. The article deals with the problem of the pluralization of knowledge about artificial intelligence, the use of performance mechanisms that produce fakes, absolutizing positive or negative consequences of the functioning of artificial intelligence. The article summarizes the state of the risks of artificial intelligence at the moment. Recommendations for further interdisciplinary study of artificial intelligence are presented. The article substantiates the importance of the implementation of the risk assessment of the emerging programs based on artificial intelligence.


2017 ◽  
Vol 225 (3) ◽  
pp. 189-199 ◽  
Author(s):  
Tina B. Lonsdorf ◽  
Jan Richter

Abstract. As the criticism of the definition of the phenotype (i.e., clinical diagnosis) represents the major focus of the Research Domain Criteria (RDoC) initiative, it is somewhat surprising that discussions have not yet focused more on specific conceptual and procedural considerations of the suggested RDoC constructs, sub-constructs, and associated paradigms. We argue that we need more precise thinking as well as a conceptual and methodological discussion of RDoC domains and constructs, their interrelationships as well as their experimental operationalization and nomenclature. The present work is intended to start such a debate using fear conditioning as an example. Thereby, we aim to provide thought-provoking impulses on the role of fear conditioning in the age of RDoC as well as conceptual and methodological considerations and suggestions to guide RDoC-based fear conditioning research in the future.


2014 ◽  
pp. 79-130 ◽  
Author(s):  
Ales Novak

The term ?business model' has recently attracted increased attention in the context of financial reporting and was formally introduced into the IFRS literature when IFRS 9 Financial Instruments was published in November 2009. However, IFRS 9 did not fully define the term ‘business model'. Furthermore, the literature on business models is quite diverse. It has been conducted in largely isolated fashion; therefore, no generally accepted definition of ?business model' has emerged. Therefore, a better understanding of the notion itself should be developed before further investigating its potential role within financial reporting. The aim of this paper is to highlight some of the perceived key themes and to identify other bases for grouping/organizing the literature based on business models. The contributions this paper makes to the literature are twofold: first, it complements previous review papers on business models; second, it contains a clear position on the distinction between the notions of the business model and strategy, which many authors identify as a key element in better explaining and communicating the notion of the business model. In this author's opinion, the term ‘strategy' is a dynamic and forward-looking notion, a sort of directional roadmap for future courses of action, whereas, ‘business model' is a more static notion, reflecting the conceptualisation of the company's underlying core business logic. The conclusion contains the author's thoughts on the role of the business model in financial reporting.


Sains Insani ◽  
2016 ◽  
Vol 1 (1) ◽  
pp. 10-14
Author(s):  
Ira Meilita Ibrahim ◽  
Taufik A. Latif ◽  
Afi Roshezry Abu Bakar ◽  
Muthualagan Thangavelu

The advancement of European dress to the rest of the world was linked to the definition of civilization as “a stage of social development considered to be more advanced” and “polite and good-mannered”. The widespread of their fashion style in the 19th and 20th centuries influenced the way the rest of the world attire. The fashion trend and dressing style thus change the purpose of dressing through time. The dressing style in campuses especially in private institutions of higher learning is under particular scrutiny, as it is often said to be inappropriate for a learning environment. This study looked at the importance of moral education, and its role in implementing the dress code for students among university students especially between two types of university i.e. public university and private university. It looked on the dressing style of students, both male and female, and the factors that lead to their dressing pattern which is common among students. This study also advocated the students’ understanding of the content of dress codes in their learning institution and the role played by moral education in regard to dress code. The overall study highlighted students’ perception towards the implementation of the dress code and punishment in their learning institution. The methodologies used to carry out this study are questionnaires and interviews. This study will therefore ascertain the important of dress code among students at higher learning institution and the role of moral education in cultivating values in order to dress properly or decently. Key Words: moral education, dress code, higher learning institution, civilization.


2020 ◽  
Vol 17 (5) ◽  
pp. 462-476
Author(s):  
Alexander A. Ushkarev ◽  
Galina G. Gedovius ◽  
Tatyana V. Petrushina

The technological revolution of recent decades has already brought art to the broadest masses, and the unexpected intervention of the pandemic has significantly accelerated the process of migration of theatrical art to the virtual space, causing the corresponding dynamics of the audience. What is the theater audience in the era of digitalization and the spread of alternative forms of cultural consumption? How does the theater build its relationship with the audience today? In search of answers, we conducted a series of sociological surveys of the Chekhov Moscow Art Theater’s audience — both at the theater’s performances and in the online community of its fans. The purpose of this phase of the study was to answer the fundamental questions: do spectators surveyed in the theater and those surveyed online represent the same audience; what are their main differences; and what are the drivers of their spectator behavior? The article presents the main results of a comparative analysis of two images of the Moscow Art Theatre’s audience based on a number of content parameters by two types of surveys, as well as the results of a regression analysis of the theater attendance. The study resulted in definition of the qualitative and behavioral differences between the theater visitors and the viewers surveyed online, and identification of the factors of theater attendance for both of the represented audience groups. The study made it possible to clarify the role of age and other socio-demographic parameters in cultural activity, as well as the influence of preferred forms of cultural consumption (live contacts or online views) on one’s attitude to art, motivation and spectator behavior. The conclusions of the study, despite the uniqueness of the object, reflect the general patterns of the modern art audience’s dynamics.


2020 ◽  
Vol 6 (3) ◽  
pp. 17-20
Author(s):  
Farxod Tursunov ◽  

The article discusses the role of the digital economy in the development of the country, how it becomes the basis of the economy, new business models and management systems. The opinion of scientistsis analyzed, a definition of a digital enterprise is given


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