scholarly journals Feedback Systems: An Analytical Framework

2013 ◽  
Vol 37 (2) ◽  
pp. 12-27 ◽  
Author(s):  
Dario Sanfilippo ◽  
Andrea Valle

The use of feedback-based systems in the music domain dates back to the 1960s. Their applications span from music composition and sound organization to audio synthesis and processing, as the interest in feedback resulted both from theoretical reflection on cybernetics and system theory, and from practical experimentation on analog circuits. The advent of computers has made possible the implementation of complex theoretical systems in audio-domain oriented applications, in some sense bridging the gap between theory and practice in the analog domain, and further increasing the range of audio and musical applications of feedback systems. In this article we first sketch a minimal history of feedback in music; second, we briefly introduce feedback systems from a theoretical point of view; then we propose a set of features that characterize them from the perspective of music applications; finally, we propose a typology targeted at feedback systems used in the audio/musical domain and discuss some relevant examples.

1995 ◽  
Vol 13 (3) ◽  
pp. 289-309 ◽  
Author(s):  
Christine Chivallon

Unlike research in the Anglophone West Indies, research in the French West Indies has only very recently developed the idea of the existence of a peasant social group in the plantation societies of Guadeloupe and Martinique. The fragility and instability of the collective identity in the French West Indies has served as a principal argument to support the view that the group is not a peasantry but a mere by-product of the plantation system. The idea of the absence of a real process of taking control of space or of a sort of intimate history with space occurs in some writings to explain this weakness of collective sense. Far from refuting the argument which firmly links the identity question to that of space, I shall reinforce it but in order to show that, on the contrary, there arc good grounds for affirming the existence, in the case of the peasant group in Martinique, of an original social experience in which space is strongly mobilised. In doing this, my intention is also to add weight to a theoretical point of view which shows the strength of the ties between space and identity, given that the peasant world in Martinique provides a paradigmatic example of the undeniable power of these ties.


2007 ◽  
Vol 49 (2) ◽  
pp. 259-270 ◽  
Author(s):  
Keyvan Aminis ◽  
Arash Haseli

AbstractInterior-Point Methods (IPMs) are not only very effective in practice for solving linear optimization problems but also have polynomial-time complexity. Despite the practical efficiency of large-update algorithms, from a theoretical point of view, these algorithms have a weaker iteration bound with respect to small-update algorithms. In fact, there is a significant gap between theory and practice for large-update algorithms. By introducing self-regular barrier functions, Peng, Roos and Terlaky improved this gap up to a factor of log n. However, checking these self-regular functions is not simple and proofs of theorems involving these functions are very complicated. Roos el al. by presenting a new class of barrier functions which are not necessarily self-regular, achieved very good results through some much simpler theorems. In this paper we introduce a new kernel function in this class which yields the best known complexity bound, both for large-update and small-update methods.


Author(s):  
Roberto Luquín Guerra

Apart from his political and educational work, and from his controversial autobiography, José Vasconcelos is known for his Ibero-Americanist thought. The Cosmic Race, Indology and Bolivarism and Monroeism gather all the ideas that are attributed to his theoretical point of view. His philosophy is what we know less of and what is most criticized. Nonetheless, is there a connection between his philosophical thought and his Ibero-Americanist ideas? Abelardo Villegas says that Vasconcelos’s philosophy is the product of a racial and cultural message. Therefore, according to Villegas, his philosophy is subordinated to his Ibero-Americanist ideas. Patrick Romanell, on the other hand, states that the Ibero-Americanist ideas make up the popular and illusory side and, hence, must be separated from the philosophical thought. The aim of this paper is to elucidate this problem. In order to clarify it, we will follow Villegas viewpoint to the bitter end. His reasoning invites us to look closely at the history of Ibero-American thought as well as at Vasconcelos’s first works. Precisely by analyzing these two aspects and the point where they meet, we might be able to find an answer.


Author(s):  
Andre Vilares Morgado

Business schools play a key role in training marketing professionals. However, there is a strong divide between the expectations held by marketing professionals and those held in academia. This article considers this phenomenon from a theoretical point of view and explores its causes. The author argues that business schools are able to play a key role in bridging theory and practice in marketing. The article closes by offering several suggestions for how business schools might increase the relevance of marketing research while reducing the gap between marketing theory and practice. In particular, the article suggests the adoption of an inductive approach to research and offers a set of policies that business schools can implement in order to close this gap.


2001 ◽  
Vol 95 (1) ◽  
pp. 241-242
Author(s):  
Ronald H. Chilcote

In both these short volumes, Ruth Lane assumes an optimis- tic stance, generally within the mainstream of political sci- ence, and attempts to synthesize past and present trends in an effort to show progress. She argues in The Art of Comparative Politics that, despite the disparate approaches, real advances have occurred within the field. Her interpretative essay focuses on the recent history of the field, with an assessment of the behavioral movement during the 1960s and subsequent emphases on development, state, grassroots and peasant politics, and the new institutionalism. In Political Science in Theory and Practice she affirms that a core consensus has appeared in the independent investigations of prominent political scientists. Thus, a coherent working model of polit- ical behavior guides political scientists to understand political realities. She argues that this concrete model coincides with scientific realism and the current understanding of a philos- ophy of science.


2015 ◽  
Vol 48 (4) ◽  
pp. 543-563 ◽  
Author(s):  
SARAH A. SWENSON

AbstractW.D. Hamilton's theory of inclusive fitness saw the evolution of altruism from the point of view of the gene. It was at heart a theory of limits, redefining altruistic behaviours as ultimately selfish. This theory inspired two controversial texts published almost in tandem, E.O. Wilson's Sociobiology: The New Synthesis (1975) and Richard Dawkins's The Selfish Gene (1976). When Wilson and Dawkins were attacked for their evolutionary interpretations of human societies, they claimed a distinction between reporting what is and declaring what ought to be. Can the history of sociobiological theories be so easily separated from its sociopolitical context? This paper draws upon unpublished materials from the 1960s and early 1970s and documents some of the ways in which Hamilton saw his research as contributing to contemporary concerns. It pays special attention to the 1969 Man and Beast Smithsonian Institution symposium in order to explore the extent to which Hamilton intended his theory to be merely descriptive versus prescriptive. From this, we may see that Hamilton was deeply concerned about the political chaos he perceived in the world around him, and hoped to arrive at a level of self-understanding through science that could inform a new social order.


2001 ◽  
Vol 34 (3) ◽  
pp. 383-418
Author(s):  
Andreas Suter

My study of the Swiss Peasants' War of 1653 has received four reviews in the United States. I am grateful to Hermann Rebel for supplying another, most unusual review to Central European History. It is unusual not only in length but also in judgment. Where the other reviews wrote positively about the book, Rebel rejects it completely.If I read Rebel correctly, his criticism covers four main points. First, he criticizes the book's theoretical point of view, alleging that the call for a “return to historical events in social history” means a return to “histoire événementielle” and would lead to “high antiquarianism.” Second, Rebel criticizes my methodological inferences from this theoretical point: systematic attention to the cultural dimension of human action; the expansion of social history's traditional methods of analysis and perspectives on time (longue durée, temps sociale) to include cultural and anthropological insights (from, i.e., Victor Turner, Mary Douglas, and Clifford Geertz); and the introduction of a “slow-motion” perspective.


2000 ◽  
pp. 41-48
Author(s):  
O. V. Kozerod

Questions of the history of the struggle against the Jewish national tradition were considered in many works of the Soviet authors of the 20-ies of the twentieth century. Among them, first of all, are those who studied various problems of the theory and practice of anti-religious propaganda in Soviet Ukraine, the history of the development of atheism. This is a monograph by Boris Zavadovsky "Moses or Darwin" and M. Sheynman "On Rabbis and Synagogues". In the late 20's and early 1930's, collections entitled "Antireligiozer Lerwukh", "Komsomolisha Agada" appeared, in which issues of the history of Judaism were considered, its main sources, criticism of its main elements from the point of view of materialistic approaches was carried out. One of the main tasks formulated by the authors of these studies was the opposition of the Jewish tradition to the new communist ideology, the hegemony of which at that time was an important part of the realities of the sociopolitical life of Ukraine.


Author(s):  
Анна Алексеевна Троицкая

Статья посвящена одной из сторон творчества английского миниатюриста-эмальера Уильяма Эссекса, выполнившего серию исторических портретов представителей тюдоровской династии. В контексте общего интереса к английской истории, а также определенной ретроспективной тенденции, свойственной викторианской эпохе, работы Эссекса демонстрируют восприятие портретной миниатюры как воплощение образов прошлого и как характерную «вещицу из прошлого». Традиция создавать небольшие изображения, предназначенные для приватного созерцания, довольно стара, и англичане, преуспевшие в развитии портретного жанра, на протяжении нескольких столетий были долгое время увлечены ею. В данной статье произведения Уильяма Эссекса рассматриваются с точки зрения стилистических и технических аспектов создания миниатюры, что позволяет осветить вопросы, связанные со сменой восприятия этой малой формы портретного искусства. Парадоксальность ситуации воспроизведения в миниатюре портретов английских монархов c миниатюрных же оригиналов, написанных в XVI – начале XVII вв., исследуется в статье с позиций теории и практики коллекционирования как способа взаимодействия с историей. Интерес к прошлому, разнообразно проявившийся в культуре викторианской Англии, здесь усиливается необходимостью представления фамильной истории английской короны. Выбор формы для ее визуализации определен предпочтением личного, приватного искусства миниатюры, которое придает обращению к истории сентиментальный характер. В контексте зарождения и распространения фотографических портретов той эпохи эмалевые миниатюры выступают как носители образов прошлого, как воплощение угасающего рукотворного искусства, вытесняемого новыми техническими средствами. Наконец, работа Эссекса над историческими портретами тюдоровской Англии, с его стремлением к формально-стилистическому подобию, становится частью сложного ретроспективного механизма, подобного двойной цитате, поскольку оригиналы воспроизводимых миниатюр также не являлись исходными изображениями. Анализ художественно-образных средств, характерных для серии портретов-миниатюр, и исторических обстоятельств возникновения интереса заказчика к конкретным образам прошлого позволяет выявить тонкую грань между воспроизведением и стилизацией, следованием традиции и идеализацией. Исследование специфического художественного опыта создания этих миниатюр обнаруживает особый способ обращения к культурной памяти, а также характер семейных и национальных ценностей, воплощенных через формирование коллекции. Практика коллекционирования – одно из проявлений викторианской визуальной культуры – в данном случае оказывает определенное влияние и на моделирование английской истории, и на формирование художественного вкуса эпохи. The article addresses the artworks of William Essex, an English enamel-painter, who created a series of the Tudors’ historical portraits. In the context of general interest in English history, as well as a certain retrospective trend peculiar for the Victorian era, William Essex`s works exemplify the miniature portraits as the embodiment of images from the past and as something characteristic to the past. The tradition of small-size portraits intended for private contemplation is quite old, and the British, who have succeeded in the development of the portrait genre, have been rather keen on it for several centuries. The article considers William Essex’s miniatures from the point of view of the stylistic and technical aspects of the genre, which allows casting some light on the issues related to the change of perception of this minor art form. The paradox of duplication by Essex of original sixteenth- and early-seventeenth-century miniatures is investigated in the article from the standpoint of the theory and practice of collecting as a way of interaction with history. The reason why the miniatures were commissioned by the Queen is both in necessity to create a gallery of family history of the English crown and in the Victorians` taste for reconstruction of the past. The choice of form for its embodiment is determined by the preference for personal, private miniature art, which gives a sentimental character to the appeal to history. In the context of the origin and spread of daguerreotypes at the time, enamel miniatures act as representatives of images of the past and the phenomenon of the fading handmade art, displaced by new technical means. In addition, Essex’s work on the Tudors’ historical portraits, with his aim for formal and stylistic resemblance, is included in a complex retrospective mechanism, like a double quote, since the sources of the reproduced miniatures were also not painted from the life and had their own originals. The analysis of artistic and imagery methods, characteristic for this series of miniatures, as well as the description of the historical circumstances in which the customer took interest in the specific images from the past, allows exposing a fine line between imitation and stylization, between tradition and idealization. In conclusion, it is stated that the specific artistic experience of the creation of these miniatures reveals a peculiar way to refer to the cultural memory, to assert some family and national values evoked in the process of the formation of the collection. Here the practice of collecting (one of the manifestations of the Victorian visual culture) is closely connected with the modeling of English history and the artistic taste of the era.


2014 ◽  
pp. 131-157
Author(s):  
Nilo Cerqueira

It is important to museology, museums and especially for visitors to define concepts about the social role of the museum and the museum as an organization. For museums is important from the point of view of its delineations of activity and modes of dialogue. To Museology has value because it gives the mission often propose new guidelines to improve and moments between the museum and society. And finally, for the visitor, it is the reason, the nature of the museum settles. At the headquarters of understanding that this not called. A simple walk in the guideline of the history of advent museum, and you can notice the dissonance between theory, the θεωρία Greek, is the purely rational descriptive knowledge . And the prâxix , 'action' . ] S.f.2 n.1 . Practical activity; action exercise use. In the course of these lines, we note, in the spectrum of branding, the various inconsistencies between theory and practice, the first image and the target image, between the rational and emotional, between being what want to be. Or as the article suggests, between the being or not being of museums.


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