scholarly journals On the hysteretic operators with random parameters

2018 ◽  
Vol 241 ◽  
pp. 01020
Author(s):  
Mikhail E. Semenov ◽  
Olesia I. Kanishcheva ◽  
Peter A. Meleshenko ◽  
Olga O. Reshetova ◽  
Roman E. Pervezentzev ◽  
...  

In this work we introduce the novel class of hysteretic operators with random parameters. We consider the definition of these operators in terms of the “input-output” relations, namely: for all permissible continuous inputs corresponds the output in the form of stochastic Markovian process. The properties of such operators are also considered and discussed on the example of a non-ideal relay with random parameters. Application of hysteretic operators with stochastic parameters is demonstrated on the example of simple oscillating system and the results of numerical simulations are presented.

Author(s):  
Anatoly S. Kuprin ◽  
Galina I. Danilina

The purpose of this study is the analysis of limit situation in the narrative of war. The material of the study is the novel of Daniil Granin “My Lieutenant” and related texts. In the first part of the paper, the authors explore existing approaches to the term “limit situation” and similar concepts into scientific and philosophical traditions; limits of its applicability in literary studies and its relation to the categories of “narrative instances” and “event”. Proposed a literary-theoretical definition of the limit situation, which can be used in the analysis of fiction texts. Existing approaches to the examination of the situation of war are analyzed: philosophical-existential, psychoanalytic, sociological, literary. In the second part of the paper, the authors propose their method for analyzing limit situations in texts about war, which basis on existing approaches and preserves the text-centric principle of studying the structure of the story. Two interrelated areas of research have been identified: the study of war as a continuous limit situation in the intertextual aspect (the discourse of war); the study of limit situations (death, suffering, guilt, accident) in the narrative of war as part of a specific text. In the third part of the scientific work,the analysis of war as a continuous limit situation results in the study of the concept of “limit” (border) in a fiction text. The role of “limit” (border) concept in the texts about the war is studied, the possible types of limits in the discourse of war are examined. Limit situations in the narrative of war are analyzed on the basis of the novel “My Lieutenant” by Daniil Granin. A review of journalistic and scientific works about the novel revealed both the continuity and the differences between the novel and the “lieutenant” prose of the 20th century. An analysis of the limit situations in the novel revealed their key position in the narrative. These situations are independent of the fiction time, of the fluctuation of the point of view’; the function of the abstract author is to build the narrative as a “directive” immersion of the hero and narrator in these situations.


2021 ◽  
Vol 3 (9) ◽  
Author(s):  
Mohammadreza Kasaei ◽  
Ali Ahmadi ◽  
Nuno Lau ◽  
Artur Pereira

AbstractBiped robots are inherently unstable because of their complex kinematics as well as dynamics. Despite many research efforts in developing biped locomotion, the performance of biped locomotion is still far from the expectations. This paper proposes a model-based framework to generate stable biped locomotion. The core of this framework is an abstract dynamics model which is composed of three masses to consider the dynamics of stance leg, torso, and swing leg for minimizing the tracking problems. According to this dynamics model, we propose a modular walking reference trajectories planner which takes into account obstacles to plan all the references. Moreover, this dynamics model is used to formulate the controller as a Model Predictive Control (MPC) scheme which can consider some constraints in the states of the system, inputs, outputs, and also mixed input-output. The performance and the robustness of the proposed framework are validated by performing several numerical simulations using MATLAB. Moreover, the framework is deployed on a simulated torque-controlled humanoid to verify its performance and robustness. The simulation results show that the proposed framework is capable of generating biped locomotion robustly.


Transilvania ◽  
2021 ◽  
pp. 121-127
Author(s):  
Anca-Simina Martin

Jews as a collective have long served as scapegoats for epidemics and pandemics, such as the Bubonic Plague and, according to some scholars, the 1918–1920 influenza pandemic. This practice reemerged in the early days of the Covid-19 pandemic, when more and more fake news outlets in the US and Europe started publishing articles on a perceived linkage between Jewish communities and the novel coronavirus. What this article aims to achieve is to facilitate a dialogue between the observations on the phenomenon made by the Elie Wiesel National Institute for the Study of the Holocaust in Romania and the latest related EU reports, with a view to charting its beginnings in Romania in relation to other European countries and in an attempt to see whether Romania, like France and Germany, has witnessed the emergence of “grey area” discourses which are not fully covered by International Holocaust Remembrance Alliance working definition of antisemitism.


Author(s):  
Yukihito Narita ◽  
Masashi Yamanaka ◽  
Katsumi Inoue

The novel mechanism CVT (Shaft Drive CVT, S-CVT) was developed by the authors. It transmits power by a traction drive same as the half toroidal CVT. S-CVT has parallel input/output shafts with conical or concave disks and the idler shaft having conical rollers at both ends, which is placed perpendicularly to the input/output shafts. All disks and rollers can move along each axis directions, and these movements produce the ratio changing by the changes of the rotational radii. The efficiency is the key evaluation function of CVT. To improve the efficiency, the backup roller mechanism was devised. Its effectiveness was confirmed by the experiment, and the efficiency of 95% was obtained by modified prototype S-CVT. This paper deals with the expansion of ratio range of S-CVT. In case of using the present disks, S-CVT has a difficulty to expand the narrow ratio range of 4 (0.5 to 2) because of the large slip brought by the spin. To expand the ratio range, the zero-spin disk/roller was devised. The shape of zero-spin disk/roller satisfies the condition that the spin does not occur at any speed ratio. According to the calculation, the slip rate becomes less than 1% at any speed ratio. To confirm the effectiveness, the prototype S-CVT with zero-spin disk was manufactured. It has the ratio range of 0.43 to 2.35. To obtain the slip rate the experiments were carried out at the speed ratio of 0.43, 1 and 2.35. At each speed ratio, the slip rate of less than 1% was obtained, and the effect of the zerospin disk was confirmed.


2011 ◽  
Vol 15 (1-2) ◽  
pp. 172-171 ◽  
Author(s):  
Chene Heady Faulstick

AbstractThis essay reconsiders Charles Ryder’s religious conversion in Brideshead Revisited in terms of a primarily emotional conversion. When reading the novel as a pilgrimage to passion, readers can see in Charles a legitimate, convincing emotional conversion, which should—when emphasizing traditional Catholic ideals—ultimately also be understood as a religious conversion. Charles’s emotional interaction with Catholicism includes his intimate, formative relationship with the Catholic Flyte family, especially Sebastian, and aspects of his career as a Baroque artist, as Baroque art is often identified with Catholicism. It also includes Charles’s disenchantment with both the soullessness of war, which drains its participants of any emotional experience, and the modern world, which lacks connection to depth and tradition. Finally, the emotive power of his inadvertent pilgrimage to Brideshead also connects Charles to Catholicism as the house facilitates Charles’s memories of his religious experience at Lord Marchmain’s deathbed, his artistic conversion to Baroque art, and his passionate friendship with Sebastian. Such a broad definition of Catholicism calls for an expansive understanding of religion, but it is this kind of a religious understanding that Brideshead Revisited recommends.


2012 ◽  
Vol 7 (1) ◽  
pp. 65-81 ◽  
Author(s):  
Liza Mügge

This article studies the conceptions of social justice of women active in transnational migrant politics over a period of roughly 20 years in the Netherlands. The novel focus on migrant women reveals that transnational politics is almost completely male-dominated and -directed. Two of the exceptions found in this article include a leftist and a Kurdish women organization supporting the communist cause in the 1980s and the Kurdish struggle in the 1990s in Turkey, respectively. In both organizations gender equality was subordinated to broader ideologies of political parties in their homeland. Leftist activists in the cold war era supported a narrow definition of the "politics of redistribution," while and Kurdish activists, combined classical features of the latter with those of traditional identity politics.


Percurso ◽  
2019 ◽  
Vol 3 (30) ◽  
pp. 42
Author(s):  
Frabriccio Petreli TAROSSO

RESUMOO presente artigo pretende aproximar alguns conceitos da novel Lei de Introdução às Normas do Direito Brasileiro – LINDB ao princípio da não-surpresa aplicável ao processo tributário, seja ele Administrativo ou Judicial. A Lei Federal n. 13.655 de 25/04/2018 houve por incluir no Decreto-Lei nº 4.657, de 4 de setembro de 1942 - Lei de Introdução às Normas do Direito Brasileiro - disposições sobre segurança jurídica e eficiência na criação e na aplicação do direito público. Deste modo, muitas dúvidas têm surgido acerca da convivência entre a regra geral de direito tributário, inserta no Art. 144 do Código Tributário Nacional, de que a lei vigente à época dos fatos geradores deve ser levada em conta ao deslinde de uma questão e que a jurisprudência majoritária à época dos mesmos fatos – se modificada – não deve servir de parâmetro para a tomada das decisões. PALAVRAS-CHAVE: Lei de Introdução às Normas do Direito Brasileiro – LINDB; Princípio Processual da não-surpresa.ABSTRACTThe present article intends to approximate some concepts of the novel Law of Introduction to the Norms of Brazilian Law - LINDB to the principle of non-surprise applicable to the tax process, be it Administrative or Judicial. Federal Law n. 13,655 dated 04/25/2018, there was a need to include in Decree-Law No. 4.657, dated September 4, 1942 - Law on Introduction to the Rules of Brazilian Law - provisions on legal certainty and efficiency in the creation and application of public law. In this way, many doubts have arisen about the coexistence between the general rule of tax law, inserted in Article 144 of the National Tax Code, that the law in force at the time of the generating facts must be taken into account in the definition of an issue and that the majority case-law at the time of the same facts - if modified - should not serve as a parameter for decision-making. The study will have as a method the legal and bibliographical research on the subject.KEYWORDS: Law of Introduction to the Norms of Brazilian Law – LINDB; Procedural Principle of Non-Surpris


2019 ◽  
Author(s):  
Assia Mohdeb ◽  
Sofiane Mammeri

Identity, in one of its understanding, signifies a set of characteristics that make up a person’s ethical faithfulness to, identification with, and pride of one’s origin, tradition, and culture. Remaining true to one’s identity and being faithful to the core values of one’s culture is a complicated matter when it comes to a black living in white society like America, where color and racial identity are rudimentary prerequisites in self-definition and naming. Philip Roth’s novel entitled The Human Stain (2000) shows how some black figures undress their black identity to wear the prestigious white one to go onward with life as full selves, to have access to all the privileges the whites enjoy, and, above all, to live without the specter of race and the decisiveness of epidermal signs. The novel calls into question and revision such essentialist notions as other, class,andrace by describing the crises the subject or self undergoes in the light of racial prejudices, center-periphery relations, and class stereotypes. The present paper, then, addresses the act of self-abdication the protagonist, Silk Coleman, carries out to overstep the feeling of otherness and to dodge racial discrimination. The paper looks into the notions of selfhood and Otherness by negotiating the definition of the self and the distortion it undergoes in its encounter with the Other . The study aims at revealing, primarily, the effects of Black racial-passing, a common phenomenon in American society of the first half of the twentieth century, on familial relationships and cultural heritage. It also reveals the weight of gender and class discrimination in the individual’s identity formation and well-being.


2004 ◽  
Vol 190 ◽  
pp. 8-14 ◽  
Author(s):  
Klaus Schenker ◽  
Graham A. Wynn ◽  
Roland Speith

AbstractWe investigate the spin evolution of the unusual magnetic CV AE Aqr. As a prototype for a potentially large population of CVs subject to a thermally unstable phase of mass transfer, understanding its future is crucial. We present a new definition of the magnetospheric radius in terms of the white dwarf’s spin period, and use this along with numerical simulations to follow the spin evolution of AE Aqr. We also present preliminary SPH results suggesting the existence of a stable propeller state. These results highlight the complexity of MCVs and may provide an improved understanding of the evolution of all types of CVs.


Sign in / Sign up

Export Citation Format

Share Document