scholarly journals An estimation of efficiency of filtering algorithms of state vector of small-sized observed object with non-Markovian approximation of trajectory

2021 ◽  
Vol 9 (4) ◽  
pp. 38-48
Author(s):  
B. A. Zaikin ◽  
A. F. Kotov
Keyword(s):  
Markov Processes ◽  
Nonlinear Estimation ◽  
Markovian Process ◽  
Theory And Practice ◽  
Single Measurement ◽  
Distribution Law ◽  
Estimation Errors ◽  
Estimation Algorithms ◽  
The Third ◽  
Multidimensional Normal Distribution

The article discusses the possibilities of estimating the states vectors of observation objects with the nonMarkovian approximation of the trajectories. The introduction discusses the problem consisting in the fact that the use of the approximation of the trajectory of the observed object by Markov processes in some cases can lead to a discrepancy between theory and practice. In the first section, we simulate the trajectories of observed objects when approximated by a Markovian process and indicate the limitations of this approach. It is proposed to use a multidimensional Gaussian distribution law for generating the trajectory of the observed object. In the second section, a study of the accuracy characteristics of a single-position angular-rangefinder radar and a three-position rangefinder radar are considered. Algorithms α-β, Kalman and nonlinear estimation are used in the modeling as estimation algorithms in these systems. The parameters and characteristics of the simulation are given. In the third part, the results of modeling the process of estimating the location of objects of observation with trajectories of movement approximated by non-Markov processes are presented. Modeling confirms the possibility of using submitted algorithms to estimate the trajectory of a smallsized object of observation, a trajectory model of which uses a multidimensional normal distribution law. It is pointed out that in several cases the filtering errors exceed the errors of a single measurement. This leads to the conclusion that further modification of the algorithms is necessary. In the final part, a recommendation is given on how to further reduce the estimation errors when using Kalman algorithms and nonlinear estimation.

scholarly journals LIFELONG LEARNING AS A PRIORITY OF DEVELOPMENT OF EUROPEAN EDUCATIONAL PARTNERSHIP

10.23856/4322 ◽  
2021 ◽  
Vol 43 (6) ◽  
pp. 172-179
Author(s):  
Dmytro Dzvinchuk ◽  
Oleksandra Kachmar
Keyword(s):  
Higher Education ◽  
Lifelong Learning ◽  
Public Administration ◽  
Theory And Practice ◽  
Social Stability ◽  
Investment Efficiency ◽  
University Staff ◽  
The Third ◽  
Educational Partnership ◽  
Key Competencies

The article explores the phenomenon of lifelong learning as one of the key priorities for the development of a European educational partnership. The importance of lifelong learning as a recognized theory and practice of the concept, which is the benchmark of broad modernization processes in the European Higher Education Area, is demonstrated. The main interrelated areas of action (defining strategic priorities for development, outlining key competencies of lifelong learning, identifying forms of lifelong learning, funding and investment efficiency) are considered.The potential of lifelong learning a mechanism for promoting social stability and cultural convergence at the beginning of the third millennium is conceptualized. Productive links between lifelong learning and the processes of building a knowledge economy have been demonstrated. The methodological basis of the study was the analysis of the European Commission’s educational policy (conceptual, regulatory and programmatic documents) in the field of lifelong learning. The results obtained in the study may be useful to both domestic researchers and practitioners in the field of public administration of higher education, university staff, involved in international cooperation.

Remaking Film

Film Studies ◽  
2004 ◽  
Vol 4 (1) ◽  
pp. 87-103 ◽  
Author(s):  
Constantine Verevis
Keyword(s):  
Theory And Practice ◽  
Film Genre ◽  
The Third ◽  
Film Genres

What is film remaking? Which films are remakes of other films? How does remaking differ from other types of repetition, such as quotation, allusion, adaptation? How is remaking different from the cinemas ability to repeat and replay the same film through reissue, redistribution and re-viewing? These are questions which have seldom been asked, let alone satisfactorily answered. This article refers to books and essays dealing directly with ‘film remakes’ and the concept of ‘remaking film’, from Michael B. Druxman‘s Make It Again, Sam (1975) to Horton and McDougal‘s Play It Again, Sam (1998) and Forrest and Koo‘s’ Dead Ringers: The Remake in Theory and Practice (2002). In addition, this article draws upon Rick Altman‘s Film/Genre, developing from that book the idea that, although film remakes (like film genres) are often ‘located’ in either authors or texts or audiences, they are in fact not located in any single place but depend upon a network of historically variable relationships. Accordingly this discussion falls into three sections: the first, remaking as industrial category, deals with issues of production, including industry (commerce) and authors (intention); the second, remaking as textual category, considers texts (plots and structures) and taxonomies; and the third, remaking as critical category, deals with issues of reception, including audiences (recognition) and institutions (discourse).

International processes in Latin America: the legacy of the Comintern and new challenges

2021 ◽  
Vol 31 (1) ◽  
pp. 106-125
Author(s):  
Anton Andreev ◽  
◽  
Daria Pravdiuk
Keyword(s):  
Foreign Policy ◽  
Latin America ◽  
21St Century ◽  
Theory And Practice ◽  
The Political ◽  
The Third ◽  
Archival Documents ◽  
History Of ◽  
New Challenges ◽  
The Impact

The activities of the Third (Communist) International left a noticeable mark on the political history of Latin America. His ideological, organizational legacy remains a factor in shaping the theory and practice of contemporary leftist governments in the region. This article examines the impact of the legacy of the Comintern on international processes in Latin America, the development of integration projects, foreign policy projects of the left forces of the region. On the basis of archival documents, media materials, documents of parties and governments, the authors show which of the foreign policy guidelines of the Comintern are relevant for the region in the 21st century.

‘Weird Brightness’ and the Riverbank

2019 ◽  
pp. 160-179
Author(s):  
Peter McDonald
Keyword(s):  
Theory And Practice ◽  
The Third ◽  
Early Memory ◽  
The City

This chapter begins with a reading from a Virgilian perspective of the third section of the title poem from Heaney’s Seeing Things (1991): here, the poet gives an account of his own early memory of his father after an accident, coming back ‘undrowned’ from the river into which he had toppled on a cart. The chapter will examine in more detail a relevant passage from Heaney’s late translation of Aeneid VI (Virgil’s encounter with Charon). Next, section XI of the ‘Route 110’ sequence (in Human Chain (2010)) will be read in relation to the river motif, and there will be a discussion of Heaney’s term ‘translation’ in that poem, with consideration of its purchase of some fundamental aspects of his poetic theory and practice. The chapter will continue to a reading of an uncollected late piece, ‘The City’, in which Heaney reflects on (amongst other things) the differences between Virgilian and Homeric angles on poetry and suffering, and it will finish with an analysis of the first section (‘Sidhe’) of the Human Chain poem ‘Wraiths’, in order to focus on the poet’s reconciliation of both Virgilian and Irish elements of a metaphysical poetic.

Human Rights under State Socialism

1984 ◽  
Vol 32 (3) ◽  
pp. 349-368 ◽  
Author(s):  
David Lane
Keyword(s):  
Human Rights ◽  
Interest Groups ◽  
Theory And Practice ◽  
The Other ◽  
The West ◽  
Russian Culture ◽  
Collective Rights ◽  
Normative Approach ◽  
The Third ◽  
The One

The paper is in four parts. The first outlines the debate that has occurred in the West about whether human rights, and about what human rights, are desirable and possible in socialist states. In the second it is contended that the normative approach to rights in socialist states has been influenced but not determined by the theory and practice of the USSR. Human rights under Marxism–Leninism are ambiguously defined: there is an unresolved tension between individual (and group) rights, on the one hand, and class and collective rights on the other. Socialist states, it is claimed, have different units, types of claims and priorities of rights. In the third section, it is argued that the Soviet model of rights has a particular correspondence with Russian culture. Its impact on other socialist countries (Poland is considered, as an illustration) depends on the internal social structure (the strength of interest groups) and the degree of legitimacy of the state. Finally, some prognostications are offered concerning the dynamics and likely developments of rights claims under socialism.

Surfing the Third Wave: A Dialogue Between Two Third Wave Feminists

Hypatia ◽  
1997 ◽  
Vol 12 (3) ◽  
pp. 7-16 ◽  
Author(s):  
Rita Alfonso ◽  
Jo Trigilio
Keyword(s):  
Power Relations ◽  
Theory And Practice ◽  
Generation Gap ◽  
Feminist Philosophy ◽  
Third Wave ◽  
The Third ◽  
The Subject ◽  
The Relationship ◽  
E Mail ◽  
Different Parts

As third wave feminist philosophers attending graduate schools in different parts of the country, we decided to use our e-mail discussion as the format for presenting our thinking on the subject of third wave feminism. Our analogue takes us through the subjects of postmodernism, the relationship between theory and practice, the generation gap, and the power relations associated with feminist philosophy as an established part of the academy.

Drei neue studien zur rhetorik der antike

2007 ◽  
Vol 34 (1) ◽  
pp. 63-75
Author(s):  
Michael Weißenberger
Keyword(s):  
Fourth Century ◽  
The State ◽  
Theory And Practice ◽  
Alphabetical Order ◽  
Ancient Rhetoric ◽  
The Third ◽  
Or Groups ◽  
Advanced Readers ◽  
Number Of Publications ◽  
Dissoi Logoi

Summary The interest in ancient rhetoric has increased noticeably over the past few decades and manifests itself in an ever growing number of publications. Three works published in the U.S.A. in 2005 approach the topic in quite different ways. Habinek’s relatively slim book is neither meant to be a comprehensive account of nor a condensed introduction to ancient rhetoric. Rather, it is made up of five chapters (“Rhetoric and the State”; “The Figure of the Orator”; “The Craft of Rhetoric”; “Rhetoric as Acculturation”; “The Afterlife of Rhetoric”) that shed light on selected aspects of ancient rhetoric from a sociological perspective; Habinek focuses on the function and role of rhetoric in the societies and states of the Greek and Roman world. On the whole, this is a useful and profitable book, despite of some weaknesses. It will, however, not replace con­ventional handbooks on ancient rhetoric, and it was not meant to, as is stressed by the author himself in the introduction: “Instead, the inspiration for this book is the ancient genre of protreptic […], which aimed to give the reader just enough information about a subject to whet the appetite for more” (p. vii). Without a doubt, Habinek has achieved this aim. In contrast to this, the book by Laurent Pernot, translated into English “with a certain number of changes to the French text” (p. xii), offers a comprehensive, historically organized introduction to the theory and practice of ancient rhetoric. Its development is outlined in six chapters, ranging from archaic times to the third century A.D. Throughout his work, Pernot has managed not to concern himself with too many minor details in order to treat the main aspects with exemplary clarity, keeping the text brief or detailed in accordance with the exigencies of the respective topics, always making transparent to his readers why ancient rhetoric came into being, developed and transformed in both theory and practice. For this reason, Pernot’s book is an excellent introduction for beginners, yet it has also much to offer to more advanced readers. One would wish that the author had chosen to include the fourth century A.D., a prolific period in the development of ancient rhetoric. It is impossible, however, to welcome the third book under review with similar enthusiasm. Under the title of “Classical Rhetorics and Rhetoricians”, Michelle Ballif and Michael G. Moran present the public with a bulky volume containing in alphabetical order 61 articles, written by 45 collaborators and Moran himself. Most often these articles deal with persons, sometimes with works (e.g., ‘Dissoi Logoi’, ‘Rhetorica ad Herennium’) or groups of authors (e.g., ‘Attic Orators’). Considering the title of the book, one finds a number of unexpected lemmata in the table of contents, like Aspasia, Augustine, Boethius, Cornelia, Diogenes of Sinope, Diotima, Pythagorean Women, Sappho, etc. The supposed relevance of these personalities for the topic of ‘rhetoric’ is, however, not substantiated anywhere in the book. Moreover, the length of various articles appears disproportionate when one considers such factors as the state of our sources, thematic relevance, or later influence (e.g., 3.5 pages for Aspasia, 4.5 pages for the Attic Orators, 10 pages for Cicero, 12 for Augustine). This creates a totally distorted picture of what we know from the sources about the representatives of ancient rhetoric and their respective importance. Numerous mistakes, sometimes even of an elementary nature, seriously impair the overall reliability of this volume. For sound information, potential users should rather turn elsewhere.

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