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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.
331

Making And Unmaking Of Class: An Inquiry Into The Working Class Experiences Of Garment Workers In Istanbul Under Flexible And Precarious Conditions

Cubukcu, Soner 01 September 2012 (has links) (PDF)
This thesis analyzes class experiences of workers under flexible and precarious conditions of global neoliberal capitalism and tries to answer to what extent these conditions erode their capacities to develop antagonistic class consciousness and collective struggles. Specifically, based on a fieldwork consisting of semi-structured in-depth interviews with 24 workers living in slums of Istanbul, it deals with cultural analysis of working and daily-life experiences of workers involved in the global production of garments. Three categories of analysis are used: experiences of shame, time and necessity, which respectively suggest that, under conditions of precarity and flexibility, the workers, 1. perceive their class positions as personal and feel themselves inadequate, leading to questioning of self-worth, injuries in the self and individual - but not collective - emancipation attempts to escape from the injuring effects of class / 2. have lost not only their control over their present time through extremely long and irregular working hours / but also are ripped of their capacity to plan/organize their future / 3. live under the burden of continuous and persistent concern over necessities, which results in deep-seated sense of deprivation, impoverishment of life experiences, lack of meaning in this life, killing of hopes and consequentially experience of powerlessness. Yet, despite all these alienating experiences, there are also inchoate seeds of revolt and an alternative worldview, which confirms that class struggle exists even &ndash / and indeed (!) &ndash / in most severe conditions of alienation and will be decisive on the emancipatory dialectics of alienation / nonalienation and making / unmaking of class.
332

A Socio-spatial Approach To The Question Of Class And Consciousness Formation In A Local Setting: The Case Of Bursa Industrial Workers

Erengezgin, Cavlan Berrak 01 January 2008 (has links) (PDF)
The aim of this thesis is to explore the class and consciousness formation in a local setting by also developing and applying a theoretical framework which allow us to study the interaction of locus of class consciousness with the other loci of consciousness formation such as the community and the state. Such an approach is also grounded in the belief that a relational understanding of these processes requires us to take spatial dynamics such as local dependency, spatial fix and fixity and mobility into account. By critically drawing upon historico-geographical materialist approach(es), the thesis attempts at resolving the tensions between &lsquo / locality-wider society&rsquo / and &lsquo / structure-consciousness&rsquo / . By integrating them into a holistic and operational conceptual framework, it investigates the highly complex patterning of relations within urban structured coherences, and their effects upon the class and consciousness formation processes. It is shown that interpenetration of these fields of tension through urban processes is crucial in shaping a backbone for the concrete struggles fought by working class against capital in and of the urban regions. These issues are discussed with reference to two working class neighborhoods in Bursa. The first community, Emek, is an unplanned, illegally built settlement, hosting mostly migrant, and lower-wage earning industrial workers, and the second one, Akpinar, is a planned settlement, composed of low-cost housing cooperatives, symbolizing a higher living standard environment for well-paid, socially secure workers, mostly local in origin. The field research focuses on the relations between &lsquo / the labor market, housing market and local dependency&rsquo / and &lsquo / the strategies between mobility-fixity adopted both on part of capital and labor&rsquo / . The specific character of these strategies also tell us how the patterning of the relations between class, community and state loci of consciousness formation and the formation of local coherences mutually shape one another. It is often assumed in this context that formation of class-based consciousness is hindered by other loci of consciousness such as the community-based one. This study shows that community-based consciousness is itself largely absent in the communities in hand and when community-base is deployed by the local workers it is often strategically employed to get personal benefits. In this sense, the study concludes that the lack of community-based consciousness does not device more effective strategies of formation of class-based consciousness but perhaps another adverse factor in developing class-based consciousness in an environment heavily dominated by individualized form of consciousness.
333

Educating shelias : what are the social class issues for mature working-class women studying at contemporary New Zealand universities? : Master of Education dissertation /

Caldwell, Frances Elizabeth. January 1900 (has links)
Thesis (M. Ed.)--University of Canterbury, 2008. / Typescript (photocopy). Includes bibliographical references (leaves 59-61). Also available via the World Wide Web.
334

On the 16-rank of class groups of quadratic number fields / Sur le 16-rang des groupes des classes de corps de nombres quadratiques

Milovic, Djordjo 04 July 2016 (has links)
Nous démontrons deux nouveaux résultats de densité à propos du 16-rang des groupes des classes de corps de nombres quadratiques. Le premier des deux est que le groupe des classes de Q(sqrt{-p}) a un élément d'ordre 16 pour un quart des nombres premiers p qui sont de la forme a^2+c^4 avec c pair. Le deuxième est que le groupe des classes de Q(sqrt{-2p}) a un élément d'ordre 16 pour un huitième des nombres premiers p=-1 (mod 4). Ces résultats de densité sont intéressants pour plusieurs raisons. D'abord, ils sont les premiers résultats non triviaux de densité sur le 16-rang des groupes des classes dans une famille de corps de nombres quadratiques. Deuxièmement, ils prouvent une instance des conjectures de Cohen et Lenstra. Troisièmement, leurs preuves impliquent de nouvelles applications des cribles développés par Friedlander et Iwaniec. Quatrièmement, nous donnons une description explicite du sous-corps du corps de classes de Hilbert de degré 8 de Q(sqrt{-p}) lorsque p est un nombre premier de la forme a^2+c^4 avec c pair; l'absence d'une telle description explicite pour le sous-corps du corps de classes de Hilbert de degré 8 de Q(sqrt{d}) est le frein principal à l'amélioration des estimations de la densité des discriminants positifs d pour lesquels l'équation de Pell négative x^2-dy^2=-1 est résoluble. Dans le cas du deuxième résultat, nous donnons une description explicite d'un élément d'ordre 4 dans le groupe des classes de Q(sqrt{-2p}) et on calcule son symbole d'Artin dans le sous-corps du corps de classes de Hilbert de degré 4 de Q(sqrt{-2p}), généralisant ainsi un résultat de Leonard et Williams. Enfin, nous démontrons un très bon terme d'erreur pour une fonction de comptage des nombres premiers qui est liée au 16-rang du groupe des classes de Q(sqrt{-2p}), donnant ainsi des indications fortes contre une conjecture de Cohn et Lagarias que le 16-rang est contrôlé par un critère de type Chebotarev. / We prove two new density results about 16-ranks of class groups of quadratic number fields. The first of the two is that the class group of Q(sqrt{-p}) has an element of order 16 for one-fourth of prime numbers p that are of the form a^2+c^4 with c even. The second is that the class group of Q(sqrt{-2p}) has an element of order 16 for one-eighth of prime numbers p=-1 (mod 4). These density results are interesting for several reasons. First, they are the first non-trivial density results about the 16-rank of class groups in a family of quadratic number fields. Second, they prove an instance of the Cohen-Lenstra conjectures. Third, both of their proofs involve new applications of powerful sieving techniques developed by Friedlander and Iwaniec. Fourth, we give an explicit description of the 8-Hilbert class field of Q(sqrt{-p}) whenever p is a prime number of the form a^2+c^4 with c even; the lack of such an explicit description for the 8-Hilbert class field of Q(sqrt{d}) is the main obstacle to improving the estimates for the density of positive discriminants d for which the negative Pell equation x^2-dy^2=-1 is solvable. In case of the second result, we give an explicit description of an element of order 4 in the class group of Q(sqrt{-2p}) and we compute its Artin symbol in the 4-Hilbert class field of Q(sqrt{-2p}), thereby generalizing a result of Leonard and Williams. Finally, we prove a power-saving error term for a prime-counting function related to the 16-rank of the class group of Q(sqrt{-2p}), thereby giving strong evidence against a conjecture of Cohn and Lagarias that the 16-rank is governed by a Chebotarev-type criterion.
335

Performance Comparison of Harmonically Tuned Power Amplifiers at 28 GHz in SiGe BiCMOS

Phan, Diem Thanh 07 March 2017 (has links)
As the demand for wireless electronics is increasing, more and more gadgets are connected wirelessly and devices are being improved constantly. The need of the new research and development for advance electronics with high performances is the priority. The data transfer rates are improved for faster communication and better efficiency is to reduce the battery consumption in handheld devices. This thesis presents three single-stage power amplifiers (PAs): class-AB, class-F and inverse class-F (class-F-1) at 28 GHz. The PAs have identical input networks: input matching, base DC feed, and base stabilizing networks. At the load side, there is a different load network for each PA. Class-AB PA load network has a single inductor with a parasitic capacitor to create a resonance at 28GHz. Class-F PA load network is composed of a parallel network (one LC tank in series with an inductor) and a series network (one 3f0-resonance LC tank in series with a capacitor) to create a multi-resonance load network. Class-F-1 load network is composed of a parallel network (two LC tank in series with an inductor) and a series network (one 2f0-resonance LC tank in series with a capacitor) to have a multi-resonance network. The main purpose of using multi-resonance load networks in class-F and class-F-1 is to shape the collector currents and voltages in order to achieve the highest efficiency possible. The chosen bias point is VCE=2.3V and ICE~12mA. As the results, class-AB PA achieves the peak PAE of 44%, 15 dBm OP-1dB, >19 dBm Psat , and 10 dB Gp. Class-F PA achieves the peak PAE of 46%, 14.5 dBm OP-1dB, ~18 dBm Psat , and 10 dB Gp. Class-F-1 PA achieves the peak PAE of 45%, 15.1 dBm OP-1dB, >18 dBm Psat , and 10 dB Gp.. In order to compare the linearity performances among three PA classes, a two-tone signal and a modulated signal with different modulation schemes (QPSK, 16QAM, 64QAM, and 256QAM) are applied to the PAs to produce IM3, ACPR, and EVM. After the analysis and comparison on efficiency and linearity, class-F PA gives the highest efficiency but has the worst linearity while class-AB has the best linearity but has the worst efficiency among three. Class-F-1 PA results lies in the middle of two other classes in term of efficiency and linearity. / Master of Science
336

Validation et désagrégation de l’humidité du sol estimée par le satellite SMOS en zones agricoles et forestières des Prairies canadiennes

Djamai, Najib January 2015 (has links)
Résumé : Le satellite Soil Moisture and Ocean Salinity (SMOS), lancé en novembre 2009, est le premier satellite en mode passif opérant en bande-L. Cette fréquence est considérée comme optimale pour estimer l’humidité du sol. SMOS est destiné à cartographier l’humidité de la couche 0-5 cm du sol à l’échelle globale, avec une précision attendue inférieure à 0,04 m3/m3, une répétitivité temporelle inférieure à 3 jours et une résolution spatiale d’environ 40 km. L’objectif de cette thèse est de valider l’humidité du sol de SMOS sur des sites agricoles et forestiers situés au Canada, et de contribuer au développement de méthodes de désagrégation de l’humidité du sol estimée par SMOS dans le but d’exploiter ces données dans les études à l’échelle locale telle qu’en agriculture. Les données de la campagne de terrain CanEx-SM10, effectuée sur un site agricole (Kenaston) et un site forestier (BERMS) situés à Saskatchewan, et celles de la campagne SMAPVEX12, effectuée sur un site majoritairement agricole (Winnipeg) situé au Manitoba, sont utilisées. Les données d’humidité du sol de SMOS ont montré une amélioration de la version v.309 à la version v.551. La version 551 des données d’humidité du sol de SMOS se compare mieux aux mesures in situ que les autres versions, aussi bien sur les sites agricoles que sur le site forestier. Sur les sites agricoles, l’humidité du sol de SMOS a montré une bonne corrélation avec les mesures au sol, particulièrement avec la version 551 (R ≥ 0,58, en modes ascendant et descendant), ainsi qu’une certaine sensibilité à la pluviométrie. Néanmoins, SMOS sous-estime l’humidité du sol en général. Cette sous-estimation est moins marquée sur le site de Kenaston en mode descendant (|biais| ≈ 0,03 m3/m3, avec la version v.551). Sur le site forestier, en raison de la densité de la végétation, les algorithmes d’estimation de l’humidité du sol à partir des mesures SMOS ne sont pas encore efficaces, malgré les améliorations apportées dans la version v.551. Par ailleurs, sur le site agricole de Kenaston et le site forestier de BERMS, les données d’humidité du sol de SMOS ont montré, généralement, de meilleures performances par rapport aux produits d’humidité du sol d’AMSR-E/NSIDC, AMSR-E/VUA et ASCAT/SSM. DISaggregation based on Physical And Theoretical scale Change (DISPATCH), un algorithme de désagrégation à base physique, est utilisé pour désagréger à 1 km de résolution spatiale l’humidité du sol de SMOS (40 km de résolution) sur les deux sites agricoles situés à Kenaston et à Winnipeg. DISPATCH est basé sur l’efficacité d’évaporation du sol (SEE) estimée à partir des données optique/ thermique de MODIS, et un modèle linéaire/non-linéaire liant l’efficacité d’évaporation et l’humidité du sol à l’échelle locale. Sur un site présentant une bonne dynamique spatiale et temporelle de l’humidité du sol (le site de Winnipeg au cours de la campagne de terrain SMAPVEX12), les résultats de DISPATCH obtenus avec le modèle linéaire sont légèrement meilleurs (R = 0,81 ; RMSE = 0.05 m3/m3 et pente = 0,52, par rapport aux mesures in situ) comparés aux résultats obtenus avec le modèle non-linéaire (R = 0,72 ; RMSE = 0.06 m3/m3 et pente = 0,61, par rapport aux mesures in situ). La précision de l’humidité du sol dérivée de DISPATCH, en se basant sur les deux modèles linéaire et non linéaire, décroit quand l’humidité du sol à grande échelle croît. Cette étude a montré, également, que DISPATCH peut être généralisé sur des sites particulièrement humides (le site de Kenaston au cours de la campagne de terrain CanEx-SM10). Cependant, en conditions humides, les résultats dérivés avec le modèle non-linéaire (R > 0,70, RMSE = 0,04 m3/m3 et pente ≈ 0,80, par rapport aux valeurs d’humidité du sol dérivées des mesures aéroportées de la température de brillance en bande L) ont montré de meilleures performances comparées à ceux dérivés avec le modèle linéaire (R > 0,73, RMSE = 0,08 m3/m3 et pente > 1.5, par rapport aux valeurs d’humidité du sol dérivées des mesures aéroportées de la température de brillance en bande L). Ceci est dû à une sous-estimation systématique de la limite sèche Tsmax. Par ailleurs, l’humidité du sol désagrégée présente une forte sensibilité à〖 Ts〗_max, particulièrement avec le modèle linéaire. Une approche simple a été proposée pour améliorer l’estimation de〖 Ts〗_max, dans des zones particulièrement humides. Elle a permis de réduire l’impact de l’incertitude sur〖 Ts〗_max dans le processus de désagrégation. Avec 〖 Ts〗_max améliorée, le modèle linaire aboutit à de meilleurs résultats (R > 0,72, RMSE = 0,04 m3/m3 et pente ≈ 0,80, par rapport aux valeurs d’humidité du sol estimées à partir des mesures aéroportées de la température de brillance en bande-L) que le modèle non-linéaire (R > 0,64, RMSE = 0,05 m3/m3 et pente ≈ 0,3, par rapport aux valeurs d’humidité du sol estimées à partir des mesures aéroportées de la température de brillance en bande-L). Basé sur des données optiques/ thermiques de MODIS, DISPATCH n’est pas applicable pour les journées nuageuses. Pour surmonter cette limitation, une nouvelle méthode a été proposée. Elle consiste à combiner DISPATCH avec le schéma de surface Canadian Land Surface Scheme (CLASS). Les données d’humidité du sol à 1 km de résolution dérivées de DISPATCH pour les journées non nuageuses sont utilisées pour calibrer les simulations de CLASS disponibles continuellement aux heures de passage de SMOS. Une approche de calibration basée sur la correction de la pente entre les valeurs d’humidité du sol dérivées de CLASS et les valeurs d’humidité du sol dérivées de DISPATCH (données de référence) a été mise au point. Les résultats montrent que les données d’humidité du sol à 1 km de résolution dérivées de cette nouvelle approche pour les journées nuageuses se comparent bien aux mesures in situ (R = 0,80 ; biais = -0,01 m3/m3 et pente = 0,74). Pour les journées non nuageuses, les valeurs d’humidité du sol dérivées de DISPATCH seul se comparent mieux aux mesures in situ que les valeurs dérivées en combinant DISPATCH à CLASS. / Abstract : The Soil Moisture and Ocean Salinity (SMOS), launched in November 2009, is the first passive microwave satellite operating in L band which is considered as optimal for soil moisture estimation. It is designed to provide global soil moisture maps at 0 – 5 cm layer from soil surface with a targeted accuracy of 0.04 m3 / m3, revisit time of less than 3 days anda spatial resolution of about 40 km. The objective of this thesis is to validate SMOS soil moisture data over agricultural and forested sites located in Canada, and to contribute to the development of SMOS downscaling methods in order to exploit these data in local scale studies such as agriculture. The data used are collected during the CanEX-SM10 field campaign, conducted over an agricultural site (Kenaston) and a forested site (BERMS) located in Saskatchewan, and during SMAPVEX12 field campaign conducted over a mostly agricultural area (Winnipeg) located in Manitoba. SMOS soil moisture data showed an improvement from the processor versions 309 to 551. Version 551 was found to be closer and more correlated to ground measurements over both agricultural and forested sites. For the agricultural sites, SMOS soil moisture showed high correlation coefficient with ground data especially with version 551(R ≥ 0.58, for ascending and descending overpasses), as well as a certain sensitivity to rainfall events. However, the SMOS soil moisture values were underestimated compared with ground measurements. This underestimation is less pronounced for the descending overpass over the Kenaston site (|bias| viii ≈ 0.03 m3/m3, for version v.551). For the forested site, due to the vegetation density, the SMOS soil moisture estimation algorithms were not very efficient despite the improvements brought to version 551. Moreover, over the agricultural site of Kenaston and the forested site of BERMS, SMOS soil moisture data showed, in general, good performances compared to AMSR-E/NSIDC, AMSR-E/VUA and ASCAT/SSM soil moisture products. DISaggregation based on Physical And Theoretical scale Change (DISPATCH), a physically-based downscaling algorithm, was used to downscale at 1-km spatial resolution the SMOS soil moisture estimates (40-km resolution) over the agricultural sites located in Kenaston and Winnipeg. DISPATCH is based on the Soil Evaporative Efficiency (SEE) derived from optical/thermal MODIS data, and a linear/non-linear model linking the Soil Evaporative Efficiency to the near-surface soil moisture at local scale. Over a site with a good spatial and temporal dynamics of soil moisture (such as Winnipeg’s site during the SMAPVEX12 field campaign), slightly better results were obtained with DISPATCH based on the linear model (R = 0.81, RMSE = 0.05 m3 /m3 and slope = 0.52, with respect to ground data) compared to results obtained from the non-linear model (R = 0.72, RMSE = 0.06 m3 /m3 and slope = 0.61, with respect to ground data). The accuracy of the DISPATCH-derived soil moisture, using both linear and non-linear models, decreases when the large-scale soil moisture increases. This study also showed, also, that DISPATCH can be generalized for very wet soil conditions (Kenaston’s site during the CanEX-SM10 field campaign). However, under wet soil conditions, better results were obtained with DISTACH based on the nonlinear (R > 0.70, RMSE = 0.04 m3/m3 and slope ≈ 0.80, with respect to the estimated soil moisture form L-band airborne brightness temperature) compared to results obtained with ix DISPATCH based on the linear model (R > 0.73, RMSE = 0.08 m3/m3 and slope > 1.5, with respect to the estimated soil moisture form L-band airborne brightness temperature). This is due to a systematic underestimation of the dry edge Tsmax. Furthermore, the downscaling results were found to be very sensitive to 𝑇𝑠𝑚𝑎𝑥, particularly with the linear model. A simple approach was proposed to improve the estimation of Tsmax under very wet soil conditions. It allowed reducing the impact of 𝑇𝑠𝑚𝑎𝑥 uncertainty in the disaggregation process. Using the improved Tsmax value, better results were obtained with the linear model (R > 0.72, RMSE = 0.04 m3/m3 and slope ≈ 0.80, with respect to the estimated soil moisture form L-band airborne brightness temperature) compared to the non-linear model (R > 0.64, RMSE = 0.05m3/m3 and slope ≈ 0.3, with respect to the estimated soil moisture form L-band airborne brightness temperature). Based on optical/thermal MODIS data, DISPATCH is not applicable for cloudy days. To overcome this limitation, a new method was proposed. It involves the combination of DISPATCH with the Canadian Land Surface Scheme (CLASS). DISPATCH-derived soil moisture data for cloud-free days are used to calibrate CLASS soil moisture simulations which are continually available at SMOS overpasses times. A calibration approach based on slope correction between the CLASS-derived and DISPATCH-derived (reference data) soil moisture datasets is considered. Results showed that soil moisture values derived from this newly developed method during cloudy days compare well with in situ data (R = 0.80, RMSE = 0.07 m3/m3 and slope = 0.73). For no-cloudy days, DISTATCH-derived soil moisture data are closer to in situ data than those derived when combining DISPATCH with CLASS.
337

The Logic of Labor in Nineteenth Century American Literature

Cantrell, Owen C 17 December 2015 (has links)
This dissertation relates the lessons of historical materialism to literary production in nineteenth-century America. In an attempt to refocus discussion of social class in this time period, I argue an emphasis on labor is essential to assess the political and economic understanding of authors writing during the reorganization of laboring life of the Market Revolution. I examine American authors from Walt Whitman and Abraham Lincoln to Herman Melville, Mark Twain, and Frederick Douglass whose interests in the aesthetics and politics of labor underlie the foundations of our understanding of class in nineteenth-century American literature.
338

Journey to modern Thailand : Westernisation, television advertising and tensions in everyday life

Hinviman, Somsuk January 1999 (has links)
This thesis examines how and why Thai advertising 'Westernises'. Drawing on a literature from the theoretical fields of globalisation, consumer culture and advertising, it interrogates the 'Westernisation' process across the three communicative moments of advertising: production, text and consumption. The research project argues first that Thailand's society, culture and media have historically evolved in relation to both the processes of 'W esternisation' and 'Thainisation', and ·second that class, mapped onto an 'urban' and 'rural' divide, is a key factor in shaping the articulations of 'Western' and 'Thai' cultures in contemporary Thai society. The thesis suggests that advertising represents and manages social change by looking 'back to the future'. As 'apostles of bourgeois modernity', the adverts 'look forward', mythifying modem life as 'future-oriented' and 'developed'. But at the same time, ads 'look backward', offering a 'nostalgic' presentation of what is lost in modem society -- the 'undeveloped' rural which is kept intact rather than modernised. Created by practitioners who identify themselves as 'Thai cosmopolitans', they and their urban audiences use 'Westernisation' to distinguish themselves from the rural peasantry: they set up a symbolic frontier between 'Us' and 'Them'. In contrast, in response to ads, rural people sceptically observe social change and the more 'Western' modem life which they wish to have; however, this is also a rationalisation of what they cannot (yet) have. The thesis concludes that in the 'journey to modem Thailand', although 'Western modernisation' is (re)defmed as 'social development' radiating outward from the metropolitan centre, culturally it is marked by an ambivalent relation to Thai traditional values and to the rural. The latter continue to constitute a necessary counter-pointing narrative of 'W esternisation' within advertising and the self-identity of the Thai middle classes.
339

Communities that care : an insight into male career patterns in a small neighbourhood

Hope, Antony Steven January 2014 (has links)
This study will offer an insight into the complex living of a group of mid-thirties males in a small neighbourhood and describe their personal career journeys. In particular, the study will highlight the complex influence of social capital, the men’s personal development through the ‘opportunity structure’ (K. Roberts, 1977) and how chance along with place of residence impact on career advancement. There have been numerous studies that have sought to discover why people make stereotypical career choices. More specifically, how male stereotyping can influence career choice and shape identity. However, many studies fail to tackle the influence of neighbourhood and family bonding which engulfs the male individual to create a very close knit masculine gang of individuals. By taking the epistemological position of interpretivism and using a narrative interview approach, along with a life history tradition, this research addresses these shortcomings. Additionally, Bourdieu’s (1985) concept of social field is employed within this study to represent the various social arenas in which young people spend their time. This notion of fields, along with the concepts of ‘habitus’ and ‘capital’ (Bourdieu, 1985, 1986) are seen to create an effective framework for understanding the social worlds of young people and the community in which they belong. The data is drawn from 10 in-depth interviews with men in their mid-thirties, who were born and raised in an inner city neighbourhood. Despite poverty, deprivation and social exclusion, these 10 men now have a career but choose not to leave the neighbourhood of their birth. They have each turned their life around by being confident, persistent, and determined to succeed, thereby empowering other individuals and their community, to build their own ladders out of poverty and towards a brighter future. However, this is a close knit network of friends and family that according to the headteacher in the local secondary school are ‘unwilling to move the boundaries of opportunity and rely too much on the ways of the past’. Each interviewee has a story to tell and these stories are interwoven and analysed through common themes explored in depth in the thesis. These stories map out a career trajectory that is based on rites of passage into adulthood and an adult sense of masculinity. Throughout the interviews evidence is provided to support the argument that ‘opportunity structure’ (K. Roberts, 1977) plays an important role in the career path of young people. Furthermore, it is argued that career choice is a developmental process with many twists and turns along the way. However, it is further argued that an identity based on age, location, ethnicity, along with common interests and a shared purpose, creates a closed shop ethos, where education and employment are shaped by elders within the family and close friends. In fact, because everyone knows everyone else, a strong common bond between family and friends is displayed, this creates strong loyalties which are manifested in the behaviour of each individual. This situation creates a large gang of individuals whose organisation has a hierarchical structure, starting from new entrants or recruits, through to elders at the top. Membership through birth is non-negotiable and to refuse to be part of this wider family could result in psychological and physiological consequences for the individual.
340

A compact switching mode class-f power amplifier design

Aripirala, Manoj Kumar 27 May 2016 (has links)
Even though there had been extensive research in Switching Mode Power Amplifier design their applications at industry level are quite limited. This is because a Fully-Integrated Switching Mode Power Amplifier using conventional active devices such as Bipolar Junction Transistors (BJT) or Metal Oxide Semiconductor Field Effect Transistor (MOSFET) is challenging due to the inherent design challenges in the Switching Power Amplifier design. A Fully-Integrated Differential Class-F2,3 Power Amplifier design is explored for this Thesis research. This Power Amplifier has a maximum theoretical efficiency of 90.7% but this value is reduced because of the switching nature of the active device, parasitic effects associated with layout and the quality factor of the passive components used. Waveform shaping required for a Class-F Power Amplifier is done using the stray inductances within a non-ideal transformer instead of individual inductors. This techniques effective reduces the foot prints of two inductors for the tuning network design and make a Fully-Integrated solution more practical.

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