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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Mashairi: a surviving art of the Swahili Muslim peoples of Lamu Town, Kenya

Mwaniki, Simon 06 March 2022 (has links)
This research focuses on the phenomenon of Swahili poetry and its continued existence amongst Swahilis in Lamu Town, a performative art that is gradually waning in traditional contexts. When people talk about mashairi (poems) in Lamu Town they are referring to both Swahili songs and poems, the two terms are used interchangeably. Mashairi also refers to a form found in Swahili poetry. I look at the usage of the text from these mashairi as lyrics employed in duas (special Islamic prayers) and traditional songs and dances specifically performed by women during Swahili weddings. It is an art that has existed for hundreds of years dating back to the 11th century through oral sources. I begin by defining the East African region, who the Swahili people are, while providing a historical background of their origins and the Swahili language. I also explore Arabic influences on Swahili culture, language and literature as part of the Re-Centring AfroAsia project (Musical and human migrations in the pre-colonial period of 700-1500AD) that has sponsored this research project. Swahili poetry continues to celebrate traditional lyrics in songs and dances performed by women in contemporary Swahili culture. There are specific members of the community who are known to possess mashairi compositional skills. Families planning weddings and duas will request that these poets compose a corpus of mashairi with detailed specifications. They are then used as lyrics in songs and dances attached to these ceremonies or they are performed as stand-alone songs. Mashairi had first existed as oral literature and stand-alone songs owing to archaic wedding songs and dances. They continue to be an essential defining feature of Swahili traditional practices. I give a laconic history of classical Swahili poetry; how Arabic facets directly or indirectly influenced this art after Arabs developed ties with Africans living on the Swahili littoral. I provide a condensed historical background on the life of one of the first and most prolific Swahili poets, Fumo Liyongo, and briefly explore factors that influenced his compositions. I rigorously analyse lyrics of songs and dances whose texts have been derived from modern mashairi and compare their themes, narratives and structure with classical mashairi. I also scrutinize the role and importance of the art of mashairi as a source of lyrics and the efforts of two poets from Lamu Town whose compositions are socially impacting the society. This art has survived for hundreds of years and has come to symbolize the enduring spirit of the Swahili people.
2

External guest speakers, Curse or Blessing? : A study on external guest speakers and the personal fables they carry out, to see if, and mainly how, they can establish collective sense-making and centring within an organizational context.

Volkers, Gerardus, Oostveen, Bartholomeus January 2012 (has links)
Purpose The purpose of the paper is to explain how executives can make effective use of fables provided by external guest speakers to create a situation of collective sense-making and centring, based on the story used in a policy making context of a private, Dutch for-profit organization ( fictitiously called Con-Zelo recruitment agency in this article ).   Design/methodology/approach The approach involved collecting and analyzing the ‘Swimming for gold’ fable as part of seven months phenomenological and symbolic study, to confirm organizational sense, identify categorized themes and analyze the process of creation. In which co-author Volkers, as a former member, had access to the organization and familiarity with the organization its history.   Findings The findings emphasize that both fables and myths can in fact establish organizational sense and centring based on categorized themes. Most important is that fables shared by an external guest speaker should not be considered as a singular event, but as start of a process; a true vehicle for collective sense-making and centring. Organizations can then do so through changes and alignment in all five types of cultural artifacts.   Originality/value This paper provides additional value by bridging the gap between theory and practice. Besides illustrating that fables do in fact contain the power to promote a particular point of view, specific meaning and or values and therewith establish organizational sense and centring. This study includes the documentation and cultural analysis of the fable, and illustrates the fable as a vehicle or process for collective sense-making and centring. Furthermore, the suggested fable-stretching model is a so called ‘soup-to-nuts’ approach that can serve as a blue-print for organizational researchers and change agents interested in using external guest speakers and the personal fables they carry out, to establish collective sense-making and centring within an organizational context.
3

Design of Controlled Rocking Steel Frames to Limit Higher Mode Effects

Andree Wiebe, Lydell Deighton 14 January 2014 (has links)
Because conventional seismic force resisting systems rely on yielding of key structural members to limit seismic forces, structural damage is expected after a design-level earthquake. Repairing this damage can be very expensive, if it is possible at all. Researchers have been developing a new family of self-centring systems that avoid structural damage. One such system is a controlled rocking steel frame, which is the subject of this thesis. In a controlled rocking steel frame, the columns of a frame are permitted to uplift from the foundation, and the response is controlled by using a combination of post-tensioning and energy dissipation. Although previous studies have confirmed the viability of this system, they have also shown that rocking does not fully limit the peak seismic forces because of higher mode effects. If a structure is designed to account for these effects, it may be uneconomical, but if it is not designed to account for them, it may be unsafe. The purpose of this thesis is to develop recommendations for the design of controlled rocking steel frames, particularly with regard to higher mode effects. A theoretical framework for understanding higher mode effects is developed, and large-scale shake table testing is used to study the behaviour of a controlled rocking steel frame. Two mechanisms are proposed to mitigate the increase in structural forces due to higher mode effects, and these mechanisms are validated by shake table testing. Numerical modelling of controlled rocking steel frames is shown to become more reliable when higher mode mitigation mechanisms are used to limit the seismic response. In the final chapters, the thesis proposes and validates a new methodology for the limit states design of controlled rocking steel frames.
4

Design of Controlled Rocking Steel Frames to Limit Higher Mode Effects

Andree Wiebe, Lydell Deighton 14 January 2014 (has links)
Because conventional seismic force resisting systems rely on yielding of key structural members to limit seismic forces, structural damage is expected after a design-level earthquake. Repairing this damage can be very expensive, if it is possible at all. Researchers have been developing a new family of self-centring systems that avoid structural damage. One such system is a controlled rocking steel frame, which is the subject of this thesis. In a controlled rocking steel frame, the columns of a frame are permitted to uplift from the foundation, and the response is controlled by using a combination of post-tensioning and energy dissipation. Although previous studies have confirmed the viability of this system, they have also shown that rocking does not fully limit the peak seismic forces because of higher mode effects. If a structure is designed to account for these effects, it may be uneconomical, but if it is not designed to account for them, it may be unsafe. The purpose of this thesis is to develop recommendations for the design of controlled rocking steel frames, particularly with regard to higher mode effects. A theoretical framework for understanding higher mode effects is developed, and large-scale shake table testing is used to study the behaviour of a controlled rocking steel frame. Two mechanisms are proposed to mitigate the increase in structural forces due to higher mode effects, and these mechanisms are validated by shake table testing. Numerical modelling of controlled rocking steel frames is shown to become more reliable when higher mode mitigation mechanisms are used to limit the seismic response. In the final chapters, the thesis proposes and validates a new methodology for the limit states design of controlled rocking steel frames.
5

NONSTRUCTURAL COMPONENT DEMANDS IN BUILDINGS WITH CONTROLLED ROCKING STEEL BRACED FRAMES

Buccella, Nathan January 2019 (has links)
Controlled Rocking Steel Braced Frames (CRSBFs) have been developed as a high-performance structural solution to resist seismic forces, due to their ability to minimize structural damage and self-centre the structure back to its original position after an earthquake. A CRSBF is intentionally allowed to uplift and rock on its foundation, which acts as the nonlinear mechanism for the system rather than member yielding and buckling. While the CRSBF is in the rocking phase, the response of the system is controlled by prestressing which anchors the frame to the foundation and energy dissipation devices which are engaged by uplift. Although CRSBFs have shown promising structural performance, an assessment of the overall effectiveness of this system must also consider the performance of nonstructural components which have a significant impact on the safety and economic performance of the system. The purpose of this thesis is to compare the performance of nonstructural components in buildings with CRSBFs to their performance in a conventional codified system such as a buckling restrained braced frame (BRBF), while also investigating which design parameters influence nonstructural component demands in CRSBFs. The responses of various types of nonstructural components, including anchored components, stocky unanchored components that slide, and slender unanchored components that rock, are determined using a cascading analysis approach where absolute floor accelerations generated from nonlinear time-history analyses of each structural system are used as input for computing the responses of nonstructural components. The results show that the trade-off of maintaining elastic behaviour of the CRSBF members is, in general, larger demands on nonstructural components compared to the BRBF system. The results also show that the stiffness of the frame and vibration of the frame in its elastic higher modes are the main influencers for nonstructural component demands in buildings with CRSBFs, while energy dissipation has a minimal impact. / Thesis / Master of Applied Science (MASc) / Controlled Rocking Steel Braced Frames (CRSBFs) have been proposed as a high-performance structural system that resists earthquake forces on buildings. This system has the ability to minimize damage to structural members and self-centre the building back to its original position after an earthquake, two characteristics that are typically not achieved by current conventional systems. However, an assessment of the CRSBF’s overall effectiveness cannot be limited to the consideration of only the structural skeleton, as the performance of nonstructural components (e.g. architectural elements, mechanical and electrical equipment, furnishings, and building contents) that are not part of the structural skeleton can have a significant impact on the safety and economic performance of earthquake resisting systems. This thesis compares the demands on nonstructural components in buildings with CRSBFs to their demands in a more conventional system during earthquake motions. The results show that the trade-off for avoiding damage to structural members in the CRSBFs is often higher demands on the nonstructural components.
6

Dissonances et convergences entre conduites du quotidien et productions de service : le cas du réseau des bureaux de poste / Dissonances and convergence between the conduct of everyday life and production service : in the network of post offices

Delahaye, Hélène 09 November 2009 (has links)
Dans un contexte de tertiarisation croissante de la société, nous questionnons l’impact des services organisés en réseau sur les rapports sociaux. Pour cela, il s’agit de comprendre les influences réciproques de la production de service sur les modalités d’organisation spatio-temporelle des Français. Une série d’entretiens individuels interroge les modalités d’organisation des activités sociales du quotidien. Elle permet d’établir une typologie de stratégies d’organisations spatio-temporelles (routine, optimisation, conciliation, spontanéité, escamotage). En miroir, est interrogée la façon dont les niveaux hiérarchiques du Réseau postal (directions nationales, départementales et bureaux de poste) se figurent le client, en prenant en compte les différentes opérations de cadrages (éthiques, cognitifs, opératoires) qui déterminent l’action. Finalement nous montrons l’influence du réseau de la Poste sur l’organisation sociale d’individus de plus en plus rationnels, individuels et mobiles / In a context of growing service sector of society, we question the impact of networked services on social relations. To do this we strive to understand the reciprocal influences of production services on the terms of spatio-temporal organization of French. A first of interviews questioning the methods of organizing social activities of daily life and provides a typology of Conduct of everyday life characterizing different spatio-temporal strategies (routine, optimization, balance, spontaneity, retraction). Mirror, we question how all levels of Network Post organization ((National, departmental and local post offices) will include the client, taking into account the various operations of framing (ethical, cognitive processes) that determine action taken. Finally we show the influence of network position on the social organization of individuals more rational, individual and mobile
7

Inclusive Worship Intercessory Prayer, connecting with "human hurts and hopes".

Stone, Michael 12 September 2006 (has links)
This dissertation explores congregational participation in worship services in the discipline of “Building up the local Church”. The research indicates the levels of participation within worship services of 98 respondents. I have felt that the low levels of participation (43 % of the respondents reported no active congregational participation and in 93% of the indicated the congregation were involved in two or less areas of the worship service) contribute to the practice of nominal Christianity. The congregation view themselves as the ‘Audience’(passive participants) at worship rather that the ‘Actors’ (active participants). The hypothesis is that ministers have centralized themselves specifically in worship and this has and is contributing towards the ‘nominal Christian’ problem experienced by the Church presently. Secondly, that a strategically planned and instituted process with the aim of involving all attendee’s at worship will facilitate active participation (the congregation become the ‘actors’ in and during the intercessory prayer time) and in so doing build up the local church. The Thesis sadly also points out that, ministers fundamental beliefs seem to have little or no influence on there practices. Of the ministers interviewed some indicated there primary task as that of ‘equipping the body of Christ’ yet those who held to that tenet had no significant levels of congregational involvement during worship. The research also shows that regardless of fundamental belief where ministers serve more than one congregation there is a 300% more congregational involvement during worship. The thesis then focuses on the roles of intercessory prayer in worship as a vehicle for getting ministry into the hands of the congregation. Interviews have been conducted and stories recorded as to the effectiveness of this process. I was particularly encouraged that the ‘sticky prayer’ as it became know took the ministry in some cases into the work place and created opportunities for ministry with in the worlds of the respondent. Beyond this it also sends a message to the world at large of the church as being faithful to God (expressed in prayer) and serving the world (those for whom we pray). / Dissertation (MA)--University of Pretoria, 2007. / Practical Theology / unrestricted
8

M?todos de mensura??o de curvaturas radiculares e a influ?ncia do glide path na manuten??o da centraliza??o e no transporte apical preparos endod?nticos : revis?es sistem?ticas e an?lise cr?tica

Hartmann, Rafael Chies 12 November 2018 (has links)
Submitted by PPG Odontologia (odontologia-pg@pucrs.br) on 2018-12-12T18:58:35Z No. of bitstreams: 1 RAFAEL_CHIES_HARTMANN_TESE.pdf: 1515467 bytes, checksum: 0787dc0b8180f2af60c74c918444dab7 (MD5) / Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-12-14T13:33:17Z (GMT) No. of bitstreams: 1 RAFAEL_CHIES_HARTMANN_TESE.pdf: 1515467 bytes, checksum: 0787dc0b8180f2af60c74c918444dab7 (MD5) / Made available in DSpace on 2018-12-14T16:01:26Z (GMT). No. of bitstreams: 1 RAFAEL_CHIES_HARTMANN_TESE.pdf: 1515467 bytes, checksum: 0787dc0b8180f2af60c74c918444dab7 (MD5) Previous issue date: 2018-11-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The great majority of the roots present curvatures and the knowledge of these curves allows the clinician a better choice for endodontic therapy. Therefore, it is necessary to use methods that can measure these curvatures with good accuracy levels. The preparation of a glide path prior to root canal instrumentation is widely suggested because can avoid possible operative errors, such as loss of centralization and apical transportation, especially in curved root canals. There is no consensus concerning the methods that can be used to measure radicular curvatures, nor regarding the efficacy of glide path. The present investigation has the objective of performing two systematic reviews in order to answer the following questions: 1- What are the methods, described in the literature, used to measure the angles and other characteristics of the curvatures of the root canals? 2- The glide path is able to reduce the apical transportation and the loss of centralization of the endodontic preparation? Also, how does the glide path - manual or engine-driven - result in minor operative errors? Methods: Using the appropriate terms for each review, electronic searches were performed on six databases: PubMed, PubMed Central (PMC), Embase, Scopus, EBSCO Dentistry & Oral Sciences Source (DOSS) and Virtual Health Library (VHL). We used studies published in English or in any language with Latin alphabet. There was no time limit for publications. In addition, in the second review, the included studies, the risk of biases was analyzed. Results: In review 1, about the methods of measurement of curvatures, 6,336 studies were obtained and of these, 31 articles that described innovative methods. Eleven studies described the methods used to measure only the angle of the radicular curvatures, for which they used 2D images. 13 studies also used 2D images, however, in addition to the angles, evaluated other features of the root canal curvatures (position, length, direction, height and shape). In addition, seven studies evaluated curvatures using 3D methods. In review 2, regarding glide path, 2,146 articles were obtained, and 18 studies fulfilled the inclusion criteria, composing the final analysis. 9 studies evaluated the glide path per se and 11 evaluated the impact of glide path on final engine-driven endodontic preparation. Conclusion: Revision 1 suggested that most methods for root canal curvature measurement have potential clinical applications; however, there is a lack of consensus on the ideal technique. In addition to the angle, other features, such as radius and position of curvature, need to be measured and should be considered when evaluating root canal curvature in both clinical and research purposes. Revision 2 revealed that engine-driven confection of glide path, when compared to manual, presents similar or better results of apical transportation and maintenance of root canal centralization. It was also observed that the preparation of glide path, prior to endodontic preparation, is associated with similar results or with a reduction of the apical transportation and the maintenance of the preparation centralization. It was also observed that deviations occur in all situations. / A grande maioria dos condutos apresenta curvaturas e o conhecimento destas curvaturas permite ao cl?nico uma melhor escolha da terap?utica endod?ntica. Para tanto, faz-se necess?rio o emprego de m?todos que possam medir essas curvaturas com bons n?veis de acur?cia. A confec??o de um glide path pr?vio ? instrumenta??o dos canais radiculares ? amplamente sugerida, pois pode evitar poss?veis erros operat?rios, tais como a perda de centraliza??o do preparo e o transporte apical, especialmente em canais radiculares curvos. Como n?o h? consenso quanto aos m?todos que podem ser utilizados na medi??o das curvaturas radiculares, tampouco referente a efic?cia do glide path, a presente investiga??o tem o objetivo de realizar duas revis?es sistem?ticas, a fim de responder ?s seguintes quest?es: 1- Quais s?o os m?todos, descritos na literatura, empregados na mensura??o dos ?ngulos e demais caracter?sticas das curvaturas dos canais radiculares? 2- O glide path ? capaz de reduzir o transporte apical e a perda de centraliza??o do preparo endod?ntico? Al?m disso, qual a forma de confec??o do glide path ? manual ou motorizada ? resulta em menores erros operat?rios? M?todos: Utilizando os termos apropriados para cada revis?o, foram realizadas buscas eletr?nicas em seis bases de dados: PubMed, PubMed Central (PMC), Embase, Scopus, EBSCO Dentistry & Oral Sciences Source (DOSS) e Virtual Health Library (VHL). Foram utilizados estudos publicados em ingl?s ou em qualquer idioma com alfabeto latino n?o houve qualquer limite temporal para as publica??es. Al?m disso, na segunda revis?o, os estudos inclu?dos tiveram o risco de vieses analisado. Resultados: Na revis?o 1, acerca dos m?todos de mensura??o das curvaturas, foram obtidos 6.346 estudos e destes, restaram 31 artigos que descreviam m?todos inovadores. Onze estudos foram descritos a fim de mensurar apenas o ?ngulo das curvaturas radiculares, para isso utilizaram 9 imagens em 2D. 13 estudos utilizaram tamb?m imagens em 2D, entretanto, al?m dos ?ngulos avaliaram outras caracter?sticas das curvaturas dos canais radiculares (posi??o, comprimento, dire??o, altura e forma). Al?m disso, sete estudos avaliaram as curvaturas atrav?s de m?todos em 3D. J? na revis?o 2, a respeito do glide path, obteve-se 2.146 artigos, sendo que 18 estudos preencheram os crit?rios de inclus?o, compondo a an?lise final. 9 pesquisas avaliaram a confec??o do glide path per se e 11 avaliaram a repercuss?o do glide path no preparo endod?ntico motorizado final. Conclus?o: a revis?o 1 sugeriu que a maioria dos m?todos de mensura??o de curvaturas dos canais radiculares tem potenciais aplica??es cl?nicas, no entanto, h? uma falta de consenso sobre a t?cnica ideal. Al?m do ?ngulo, outros fatores, como raio e posi??o da curvatura, precisam ser mensurados e devem ser levados em considera??o ao se avaliar a curvatura do canal radicular tanto em tratamentos cl?nicos como em ambientes de pesquisa. J? a revis?o 2 revelou que a confec??o motorizada, quando comparada com a confec??o manual, do glide path apresenta resultados similares ou melhores de transporte apical e manuten??o da centraliza??o do canal radicular. Observou-se, tamb?m, que a confec??o do glide path, previamente ao preparo endod?ntico, est? associada com resultados similares ou com a redu??o do transporte apical e a manuten??o da centraliza??o do preparo. Tamb?m foi observado que ocorrem desvios em todas as situa??es.
9

Konstrukce univerzálního zařízení na dělení pneumatik . / Design of Universal Equipment for Tire Cutting

Kohoutek, Petr January 2009 (has links)
The main content of of this thesis is a construction design and analysis of a machine for cutting tires. The resulting solution emerges from the design options and the option that meets the best selection criteria is chosen. Then the thesis stops for a while at the choice of cutting technology and tries to exemine its suitability for cutting tires. In its other part there is an attempt to clarify the relevant parts of the machine, where the benefits of three-dimensional views is used. Basic design and check calculations are done in the selected machine parts.

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