246 research outputs found

    Centralized and decentralized control of structural vibration and sound radiation

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    This paper examines the performance of centralized and decentralized feedback controllers on a plate with multiple colocated velocity sensors and force actuators. The performance is measured by the reduction in either kinetic energy or sound radiation, when the plate is excited with a randomly distributed, white pressure field or colored noise. The trade-off between performance and control effort is examined for each case. The controllers examined are decentralized absolute velocity feedback, centralized absolute velocity feedback control and linear quadratic Gaussian (LQG) control. It is seen that, despite the fact that LQG control is a centralized, dynamic controller, there is little overall performance improvement in comparison to decentralized direct velocity feedback control if both are limited to the same control effort

    The social class struggles concept with an interdisciplinary approach: a paramount concept for research in library and information science (LIS)

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    This paper analyses the social class struggles concept with an interdisciplinary approach to be used by theorists and practitioners of library and information science (LIS). This concept emerged as part of the theoretical framework employed by the author in his doctoral thesis (Muela-Meza, 2010): An Application of Community Profiling to Analyse Community Information Needs, and Providers: Perceptions from the People of the Broomhall Neighbourhood of Sheffield, UK. This concept is complemented from philosophy (Marx and Engels, [1848] 1976a), and the natural sciences (Hauser, 2006; Sagan and Druyan, 1992), and it served the author to understand better the bigger dimensions of the underlying issues behind social classes and human conflicts. It also served to understand better the contradictions between people (e.g. LIS users with contradictory and mutually exclusive information needs to be provided by libraries and other institutions of information recorded in documents), and how these intensify when these are interrelated with the social class they belong to (Muela-Meza, 2007). This paper also criticises some competing views whose proponents by pretending fallaciously and deceitfully to deny the presence of social class divides in society, such as those rhetorical ploys of post-modernism that propose capitalist-class-driven ideologues of “community cohesion” based on “social capital” (Putnam, 1999). It shows evidence of how those followers (e.g. Pateman, 2006; Contreras Contreras, 2004; Bryson, Usherwood and Proctor, 2003) of capitalist-class ideologues, by doing so they aligned their discourse to that of dominance hierarchies and hegemony against working class people, in LIS and other sciences, and the humanities. It also criticises the postmodern pseudoscience because it pretends to undermine the logical rationality fundamental in LIS and all other sciences. It recommends that LIS theorists and practitioners employ the social class struggles concept as configured here in order to understand better contradictions, conflicts, and struggles within LIS theory and practice, and also to search for broader epistemological aims such as justice and wisdom (Fleissner and Hofkirchner, 1998), concealed by the capitalist or bourgeois and middle classes for their benefit against working class

    Schakelpunt stedelijke ritmes in Scheveningen

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    Public RealmPublic BuildingArchitectur

    Continuous materialcycle: Multifunctional center in Scheveningen

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    The research concerns an alternative way of thinking and design approach in relation to materialization. In contrast to the current thinking of linear material process, materials are investigated that fit within the framework of a continuous material cycle. The design is for a multifunctional center on the FAST terrain in Scheveningen.Architectural EngineeringArchitectureArchitectur

    Education, Recreation and Sports Transversely Through Transvaal

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    The district of Transvaal in The Hague city is suffering a lack of sports and play facilities. In order to do something about this I designed a building for sports and play. This building gives new meaning to a poorly facilitated area of Transvaal. The building design together with the design of the public realm establish a connection with the rest of Transvaal in order to attract people to use this realm.Public RealmPublic BuildingArchitectur

    Bakhtinian Dialogic and Vygotskian Dialectic: Compatabilities and contradictions in the classroom?

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    This article explores two central notions of ‘dialectics’ and ‘dialogics’ based on the work of Vygotsky (drawing on philosophers such as Hegel, Spinoza, Engels and Marx) and Bakhtin (drawing on members of the Bakhtin Circle and writers such as Dostoevsky and Rabelais) respectively, as well their varying interanimations within Stalin-Marxist Russian society. It is proposed that these two positions are incommensurably located alongside one another in contemporary education. I argue that Bakhtin offers diametrically oppositional educational provocations to those of Vygotsky. The implications of these interpretations will be explored with consideration of their underlying philosophical incompatibilities and contradictions, as well as the opportunities such a consideration pose for educational practice today

    Connecting Transvaal

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    Transvaal is one of biggest trouble neighbourhoods of the Netherlands. The big amount of immigrants and the ignorance of each others culture causes that the area is disconnected with the rest of The Hague. By connecting the two most important and exclusive areas of Transvaal, which are the ‘Haagse Markt’ (one of the biggest open markets of the Netherlands) and the ‘Paul Krugerlaan’ (an exclusive Indian shopping street), both areas will work together and will attract a lot of people from outside of Transvaal. To make a logic transition beween this two commercial areas I designed a bazaar street who is injected with 7 exclusive pavilions. These pavilions attract different lifestyles towards the area and also will stimulate the social control by its 24hr activity.ArchitectureArchitectur

    Accounting and the Birth of the Notion of Capitalism

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    The purpose of this paper is to cast a new light on the post-Sombartian debate. It contributes to some understanding of the birth of the concept of capitalism itself. The author argues that the history of how the concept of capitalism was invented is an example of the influence of accounting ideas on economic and sociological thinking.capitalism; accounting; Karl Marx; Werner Sombart

    Learner perceptions of English language teaching in African high schools: implications for language policy

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    Are the most suitable teachers of a second language necessarily mother-tongue speakers of that language? From a survey of responses of std 8, 9 and 10 African pupils of English as a second language, it would seem that teachers of English who are not mother-tongue speakers are automatically regarded as inferior. In this article, the author considers the validity of 'South African English; and the role and relevance of indigenous languages in education in a post-apartheid era. He uses data gained .from his pilot study to elucidate issues such as the role of English in education in a multi-lingual context and particularly the need for in-service training and improved initial training of language teachers in South Africa. Is die mees geskikte tweede taal-onderwysers noodwendig moedertaalsprekers van daardie taal? Uit 'n oorsig van response van standerd agt, nege en tien swart tweede taal Engels-leerlinge, blyk dit asof Engelsonderwysers wat nie moedertaalsprekers is nie outomaties as minderwaardig beskou word. In hierdie artikel ondersoek die skrywer die geldigheid van "Suid-Afrikaanse Engels" en die rol en relevansie van inheemse tale in die onderwys in 'n post-apartheid tydperk. Hy gebruik data uit sy loodsstudie om sake soos die rol van Engels in onderwys in 'n veeltalige konteks toe te lig en vera! die behoefte aan in-diensopleiding en verbeterde aanvanklike opleiding van taalonderwysers in Suid-A.frika
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